Elliott Hughes | 5b80804 | 2021-10-01 10:56:10 -0700 | [diff] [blame] | 1 | /************************************************* |
| 2 | * pcre2grep program * |
| 3 | *************************************************/ |
| 4 | |
| 5 | /* This is a grep program that uses the 8-bit PCRE regular expression library |
| 6 | via the PCRE2 updated API to do its pattern matching. On Unix-like, Windows, |
| 7 | and native z/OS systems it can recurse into directories, and in z/OS it can |
| 8 | handle PDS files. |
| 9 | |
| 10 | Note that for native z/OS, in addition to defining the NATIVE_ZOS macro, an |
| 11 | additional header is required. That header is not included in the main PCRE2 |
| 12 | distribution because other apparatus is needed to compile pcre2grep for z/OS. |
| 13 | The header can be found in the special z/OS distribution, which is available |
| 14 | from www.zaconsultants.net or from www.cbttape.org. |
| 15 | |
| 16 | Copyright (c) 1997-2020 University of Cambridge |
| 17 | |
| 18 | ----------------------------------------------------------------------------- |
| 19 | Redistribution and use in source and binary forms, with or without |
| 20 | modification, are permitted provided that the following conditions are met: |
| 21 | |
| 22 | * Redistributions of source code must retain the above copyright notice, |
| 23 | this list of conditions and the following disclaimer. |
| 24 | |
| 25 | * Redistributions in binary form must reproduce the above copyright |
| 26 | notice, this list of conditions and the following disclaimer in the |
| 27 | documentation and/or other materials provided with the distribution. |
| 28 | |
| 29 | * Neither the name of the University of Cambridge nor the names of its |
| 30 | contributors may be used to endorse or promote products derived from |
| 31 | this software without specific prior written permission. |
| 32 | |
| 33 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| 34 | AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 35 | IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 36 | ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
| 37 | LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 38 | CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 39 | SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 40 | INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 41 | CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 42 | ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 43 | POSSIBILITY OF SUCH DAMAGE. |
| 44 | ----------------------------------------------------------------------------- |
| 45 | */ |
| 46 | |
| 47 | #ifdef HAVE_CONFIG_H |
| 48 | #include "config.h" |
| 49 | #endif |
| 50 | |
| 51 | #include <ctype.h> |
| 52 | #include <locale.h> |
| 53 | #include <stdio.h> |
| 54 | #include <string.h> |
| 55 | #include <stdlib.h> |
| 56 | #include <errno.h> |
| 57 | |
| 58 | #include <sys/types.h> |
| 59 | #include <sys/stat.h> |
| 60 | |
| 61 | #if (defined _WIN32 || (defined HAVE_WINDOWS_H && HAVE_WINDOWS_H)) \ |
| 62 | && !defined WIN32 && !defined(__CYGWIN__) |
| 63 | #define WIN32 |
| 64 | #endif |
| 65 | |
| 66 | /* Some CMake's define it still */ |
| 67 | #if defined(__CYGWIN__) && defined(WIN32) |
| 68 | #undef WIN32 |
| 69 | #endif |
| 70 | |
| 71 | #ifdef __VMS |
| 72 | #include clidef |
| 73 | #include descrip |
| 74 | #include lib$routines |
| 75 | #endif |
| 76 | |
| 77 | #ifdef WIN32 |
| 78 | #include <io.h> /* For _setmode() */ |
| 79 | #include <fcntl.h> /* For _O_BINARY */ |
| 80 | #endif |
| 81 | |
| 82 | #if defined(SUPPORT_PCRE2GREP_CALLOUT) && defined(SUPPORT_PCRE2GREP_CALLOUT_FORK) |
| 83 | #ifdef WIN32 |
| 84 | #include <process.h> |
| 85 | #else |
| 86 | #include <sys/wait.h> |
| 87 | #endif |
| 88 | #endif |
| 89 | |
| 90 | #ifdef HAVE_UNISTD_H |
| 91 | #include <unistd.h> |
| 92 | #endif |
| 93 | |
| 94 | #ifdef SUPPORT_LIBZ |
| 95 | #include <zlib.h> |
| 96 | #endif |
| 97 | |
| 98 | #ifdef SUPPORT_LIBBZ2 |
| 99 | #include <bzlib.h> |
| 100 | #endif |
| 101 | |
| 102 | #define PCRE2_CODE_UNIT_WIDTH 8 |
| 103 | #include "pcre2.h" |
| 104 | |
| 105 | /* Older versions of MSVC lack snprintf(). This define allows for |
| 106 | warning/error-free compilation and testing with MSVC compilers back to at least |
| 107 | MSVC 10/2010. Except for VC6 (which is missing some fundamentals and fails). */ |
| 108 | |
| 109 | #if defined(_MSC_VER) && (_MSC_VER < 1900) |
| 110 | #define snprintf _snprintf |
| 111 | #endif |
| 112 | |
| 113 | /* VC and older compilers don't support %td or %zu, and even some that claim to |
| 114 | be C99 don't support it (hence DISABLE_PERCENT_ZT). */ |
| 115 | |
| 116 | #if defined(_MSC_VER) || !defined(__STDC_VERSION__) || __STDC_VERSION__ < 199901L || defined(DISABLE_PERCENT_ZT) |
| 117 | #define PTR_FORM "lu" |
| 118 | #define SIZ_FORM "lu" |
| 119 | #define SIZ_CAST (unsigned long int) |
| 120 | #else |
| 121 | #define PTR_FORM "td" |
| 122 | #define SIZ_FORM "zu" |
| 123 | #define SIZ_CAST |
| 124 | #endif |
| 125 | |
| 126 | #define FALSE 0 |
| 127 | #define TRUE 1 |
| 128 | |
| 129 | typedef int BOOL; |
| 130 | |
| 131 | #define DEFAULT_CAPTURE_MAX 50 |
| 132 | |
| 133 | #if BUFSIZ > 8192 |
| 134 | #define MAXPATLEN BUFSIZ |
| 135 | #else |
| 136 | #define MAXPATLEN 8192 |
| 137 | #endif |
| 138 | |
| 139 | #define FNBUFSIZ 2048 |
| 140 | #define ERRBUFSIZ 256 |
| 141 | |
| 142 | /* Values for the "filenames" variable, which specifies options for file name |
| 143 | output. The order is important; it is assumed that a file name is wanted for |
| 144 | all values greater than FN_DEFAULT. */ |
| 145 | |
| 146 | enum { FN_NONE, FN_DEFAULT, FN_MATCH_ONLY, FN_NOMATCH_ONLY, FN_FORCE }; |
| 147 | |
| 148 | /* File reading styles */ |
| 149 | |
| 150 | enum { FR_PLAIN, FR_LIBZ, FR_LIBBZ2 }; |
| 151 | |
| 152 | /* Actions for the -d and -D options */ |
| 153 | |
| 154 | enum { dee_READ, dee_SKIP, dee_RECURSE }; |
| 155 | enum { DEE_READ, DEE_SKIP }; |
| 156 | |
| 157 | /* Actions for special processing options (flag bits) */ |
| 158 | |
| 159 | #define PO_WORD_MATCH 0x0001 |
| 160 | #define PO_LINE_MATCH 0x0002 |
| 161 | #define PO_FIXED_STRINGS 0x0004 |
| 162 | |
| 163 | /* Binary file options */ |
| 164 | |
| 165 | enum { BIN_BINARY, BIN_NOMATCH, BIN_TEXT }; |
| 166 | |
| 167 | /* Return values from decode_dollar_escape() */ |
| 168 | |
| 169 | enum { DDE_ERROR, DDE_CAPTURE, DDE_CHAR }; |
| 170 | |
| 171 | /* In newer versions of gcc, with FORTIFY_SOURCE set (the default in some |
| 172 | environments), a warning is issued if the value of fwrite() is ignored. |
| 173 | Unfortunately, casting to (void) does not suppress the warning. To get round |
| 174 | this, we use a macro that compiles a fudge. Oddly, this does not also seem to |
| 175 | apply to fprintf(). */ |
| 176 | |
| 177 | #define FWRITE_IGNORE(a,b,c,d) if (fwrite(a,b,c,d)) {} |
| 178 | |
| 179 | /* Under Windows, we have to set stdout to be binary, so that it does not |
| 180 | convert \r\n at the ends of output lines to \r\r\n. However, that means that |
| 181 | any messages written to stdout must have \r\n as their line terminator. This is |
| 182 | handled by using STDOUT_NL as the newline string. We also use a normal double |
| 183 | quote for the example, as single quotes aren't usually available. */ |
| 184 | |
| 185 | #ifdef WIN32 |
| 186 | #define STDOUT_NL "\r\n" |
| 187 | #define STDOUT_NL_LEN 2 |
| 188 | #define QUOT "\"" |
| 189 | #else |
| 190 | #define STDOUT_NL "\n" |
| 191 | #define STDOUT_NL_LEN 1 |
| 192 | #define QUOT "'" |
| 193 | #endif |
| 194 | |
| 195 | /* This code is returned from decode_dollar_escape() when $n is encountered, |
| 196 | and used to mean "output STDOUT_NL". It is, of course, not a valid Unicode code |
| 197 | point. */ |
| 198 | |
| 199 | #define STDOUT_NL_CODE 0x7fffffffu |
| 200 | |
| 201 | |
| 202 | |
| 203 | /************************************************* |
| 204 | * Global variables * |
| 205 | *************************************************/ |
| 206 | |
| 207 | /* Jeffrey Friedl has some debugging requirements that are not part of the |
| 208 | regular code. */ |
| 209 | |
| 210 | #ifdef JFRIEDL_DEBUG |
| 211 | static int S_arg = -1; |
| 212 | static unsigned int jfriedl_XR = 0; /* repeat regex attempt this many times */ |
| 213 | static unsigned int jfriedl_XT = 0; /* replicate text this many times */ |
| 214 | static const char *jfriedl_prefix = ""; |
| 215 | static const char *jfriedl_postfix = ""; |
| 216 | #endif |
| 217 | |
| 218 | static const char *colour_string = "1;31"; |
| 219 | static const char *colour_option = NULL; |
| 220 | static const char *dee_option = NULL; |
| 221 | static const char *DEE_option = NULL; |
| 222 | static const char *locale = NULL; |
| 223 | static const char *newline_arg = NULL; |
| 224 | static const char *om_separator = NULL; |
| 225 | static const char *stdin_name = "(standard input)"; |
| 226 | static const char *output_text = NULL; |
| 227 | |
| 228 | static char *main_buffer = NULL; |
| 229 | |
| 230 | static int after_context = 0; |
| 231 | static int before_context = 0; |
| 232 | static int binary_files = BIN_BINARY; |
| 233 | static int both_context = 0; |
| 234 | static int bufthird = PCRE2GREP_BUFSIZE; |
| 235 | static int max_bufthird = PCRE2GREP_MAX_BUFSIZE; |
| 236 | static int bufsize = 3*PCRE2GREP_BUFSIZE; |
| 237 | static int endlinetype; |
| 238 | |
| 239 | static int count_limit = -1; /* Not long, so that it works with OP_NUMBER */ |
| 240 | static unsigned long int counts_printed = 0; |
| 241 | static unsigned long int total_count = 0; |
| 242 | |
| 243 | #ifdef WIN32 |
| 244 | static int dee_action = dee_SKIP; |
| 245 | #else |
| 246 | static int dee_action = dee_READ; |
| 247 | #endif |
| 248 | |
| 249 | static int DEE_action = DEE_READ; |
| 250 | static int error_count = 0; |
| 251 | static int filenames = FN_DEFAULT; |
| 252 | |
| 253 | #ifdef SUPPORT_PCRE2GREP_JIT |
| 254 | static BOOL use_jit = TRUE; |
| 255 | #else |
| 256 | static BOOL use_jit = FALSE; |
| 257 | #endif |
| 258 | |
| 259 | static const uint8_t *character_tables = NULL; |
| 260 | |
| 261 | static uint32_t pcre2_options = 0; |
| 262 | static uint32_t extra_options = 0; |
| 263 | static PCRE2_SIZE heap_limit = PCRE2_UNSET; |
| 264 | static uint32_t match_limit = 0; |
| 265 | static uint32_t depth_limit = 0; |
| 266 | |
| 267 | static pcre2_compile_context *compile_context; |
| 268 | static pcre2_match_context *match_context; |
| 269 | static pcre2_match_data *match_data; |
| 270 | static PCRE2_SIZE *offsets; |
| 271 | static uint32_t offset_size; |
| 272 | static uint32_t capture_max = DEFAULT_CAPTURE_MAX; |
| 273 | |
| 274 | static BOOL count_only = FALSE; |
| 275 | static BOOL do_colour = FALSE; |
| 276 | #ifdef WIN32 |
| 277 | static BOOL do_ansi = FALSE; |
| 278 | #endif |
| 279 | static BOOL file_offsets = FALSE; |
| 280 | static BOOL hyphenpending = FALSE; |
| 281 | static BOOL invert = FALSE; |
| 282 | static BOOL line_buffered = FALSE; |
| 283 | static BOOL line_offsets = FALSE; |
| 284 | static BOOL multiline = FALSE; |
| 285 | static BOOL number = FALSE; |
| 286 | static BOOL omit_zero_count = FALSE; |
| 287 | static BOOL resource_error = FALSE; |
| 288 | static BOOL quiet = FALSE; |
| 289 | static BOOL show_total_count = FALSE; |
| 290 | static BOOL silent = FALSE; |
| 291 | static BOOL utf = FALSE; |
| 292 | |
| 293 | static uint8_t utf8_buffer[8]; |
| 294 | |
| 295 | |
| 296 | /* Structure for list of --only-matching capturing numbers. */ |
| 297 | |
| 298 | typedef struct omstr { |
| 299 | struct omstr *next; |
| 300 | int groupnum; |
| 301 | } omstr; |
| 302 | |
| 303 | static omstr *only_matching = NULL; |
| 304 | static omstr *only_matching_last = NULL; |
| 305 | static int only_matching_count; |
| 306 | |
| 307 | /* Structure for holding the two variables that describe a number chain. */ |
| 308 | |
| 309 | typedef struct omdatastr { |
| 310 | omstr **anchor; |
| 311 | omstr **lastptr; |
| 312 | } omdatastr; |
| 313 | |
| 314 | static omdatastr only_matching_data = { &only_matching, &only_matching_last }; |
| 315 | |
| 316 | /* Structure for list of file names (for -f and --{in,ex}clude-from) */ |
| 317 | |
| 318 | typedef struct fnstr { |
| 319 | struct fnstr *next; |
| 320 | char *name; |
| 321 | } fnstr; |
| 322 | |
| 323 | static fnstr *exclude_from = NULL; |
| 324 | static fnstr *exclude_from_last = NULL; |
| 325 | static fnstr *include_from = NULL; |
| 326 | static fnstr *include_from_last = NULL; |
| 327 | |
| 328 | static fnstr *file_lists = NULL; |
| 329 | static fnstr *file_lists_last = NULL; |
| 330 | static fnstr *pattern_files = NULL; |
| 331 | static fnstr *pattern_files_last = NULL; |
| 332 | |
| 333 | /* Structure for holding the two variables that describe a file name chain. */ |
| 334 | |
| 335 | typedef struct fndatastr { |
| 336 | fnstr **anchor; |
| 337 | fnstr **lastptr; |
| 338 | } fndatastr; |
| 339 | |
| 340 | static fndatastr exclude_from_data = { &exclude_from, &exclude_from_last }; |
| 341 | static fndatastr include_from_data = { &include_from, &include_from_last }; |
| 342 | static fndatastr file_lists_data = { &file_lists, &file_lists_last }; |
| 343 | static fndatastr pattern_files_data = { &pattern_files, &pattern_files_last }; |
| 344 | |
| 345 | /* Structure for pattern and its compiled form; used for matching patterns and |
| 346 | also for include/exclude patterns. */ |
| 347 | |
| 348 | typedef struct patstr { |
| 349 | struct patstr *next; |
| 350 | char *string; |
| 351 | PCRE2_SIZE length; |
| 352 | pcre2_code *compiled; |
| 353 | } patstr; |
| 354 | |
| 355 | static patstr *patterns = NULL; |
| 356 | static patstr *patterns_last = NULL; |
| 357 | static patstr *include_patterns = NULL; |
| 358 | static patstr *include_patterns_last = NULL; |
| 359 | static patstr *exclude_patterns = NULL; |
| 360 | static patstr *exclude_patterns_last = NULL; |
| 361 | static patstr *include_dir_patterns = NULL; |
| 362 | static patstr *include_dir_patterns_last = NULL; |
| 363 | static patstr *exclude_dir_patterns = NULL; |
| 364 | static patstr *exclude_dir_patterns_last = NULL; |
| 365 | |
| 366 | /* Structure holding the two variables that describe a pattern chain. A pointer |
| 367 | to such structures is used for each appropriate option. */ |
| 368 | |
| 369 | typedef struct patdatastr { |
| 370 | patstr **anchor; |
| 371 | patstr **lastptr; |
| 372 | } patdatastr; |
| 373 | |
| 374 | static patdatastr match_patdata = { &patterns, &patterns_last }; |
| 375 | static patdatastr include_patdata = { &include_patterns, &include_patterns_last }; |
| 376 | static patdatastr exclude_patdata = { &exclude_patterns, &exclude_patterns_last }; |
| 377 | static patdatastr include_dir_patdata = { &include_dir_patterns, &include_dir_patterns_last }; |
| 378 | static patdatastr exclude_dir_patdata = { &exclude_dir_patterns, &exclude_dir_patterns_last }; |
| 379 | |
| 380 | static patstr **incexlist[4] = { &include_patterns, &exclude_patterns, |
| 381 | &include_dir_patterns, &exclude_dir_patterns }; |
| 382 | |
| 383 | static const char *incexname[4] = { "--include", "--exclude", |
| 384 | "--include-dir", "--exclude-dir" }; |
| 385 | |
| 386 | /* Structure for options and list of them */ |
| 387 | |
| 388 | enum { OP_NODATA, OP_STRING, OP_OP_STRING, OP_NUMBER, OP_U32NUMBER, OP_SIZE, |
| 389 | OP_OP_NUMBER, OP_OP_NUMBERS, OP_PATLIST, OP_FILELIST, OP_BINFILES }; |
| 390 | |
| 391 | typedef struct option_item { |
| 392 | int type; |
| 393 | int one_char; |
| 394 | void *dataptr; |
| 395 | const char *long_name; |
| 396 | const char *help_text; |
| 397 | } option_item; |
| 398 | |
| 399 | /* Options without a single-letter equivalent get a negative value. This can be |
| 400 | used to identify them. */ |
| 401 | |
| 402 | #define N_COLOUR (-1) |
| 403 | #define N_EXCLUDE (-2) |
| 404 | #define N_EXCLUDE_DIR (-3) |
| 405 | #define N_HELP (-4) |
| 406 | #define N_INCLUDE (-5) |
| 407 | #define N_INCLUDE_DIR (-6) |
| 408 | #define N_LABEL (-7) |
| 409 | #define N_LOCALE (-8) |
| 410 | #define N_NULL (-9) |
| 411 | #define N_LOFFSETS (-10) |
| 412 | #define N_FOFFSETS (-11) |
| 413 | #define N_LBUFFER (-12) |
| 414 | #define N_H_LIMIT (-13) |
| 415 | #define N_M_LIMIT (-14) |
| 416 | #define N_M_LIMIT_DEP (-15) |
| 417 | #define N_BUFSIZE (-16) |
| 418 | #define N_NOJIT (-17) |
| 419 | #define N_FILE_LIST (-18) |
| 420 | #define N_BINARY_FILES (-19) |
| 421 | #define N_EXCLUDE_FROM (-20) |
| 422 | #define N_INCLUDE_FROM (-21) |
| 423 | #define N_OM_SEPARATOR (-22) |
| 424 | #define N_MAX_BUFSIZE (-23) |
| 425 | #define N_OM_CAPTURE (-24) |
| 426 | #define N_ALLABSK (-25) |
| 427 | |
| 428 | static option_item optionlist[] = { |
| 429 | { OP_NODATA, N_NULL, NULL, "", "terminate options" }, |
| 430 | { OP_NODATA, N_HELP, NULL, "help", "display this help and exit" }, |
| 431 | { OP_NUMBER, 'A', &after_context, "after-context=number", "set number of following context lines" }, |
| 432 | { OP_NODATA, 'a', NULL, "text", "treat binary files as text" }, |
| 433 | { OP_NUMBER, 'B', &before_context, "before-context=number", "set number of prior context lines" }, |
| 434 | { OP_BINFILES, N_BINARY_FILES, NULL, "binary-files=word", "set treatment of binary files" }, |
| 435 | { OP_NUMBER, N_BUFSIZE,&bufthird, "buffer-size=number", "set processing buffer starting size" }, |
| 436 | { OP_NUMBER, N_MAX_BUFSIZE,&max_bufthird, "max-buffer-size=number", "set processing buffer maximum size" }, |
| 437 | { OP_OP_STRING, N_COLOUR, &colour_option, "color=option", "matched text color option" }, |
| 438 | { OP_OP_STRING, N_COLOUR, &colour_option, "colour=option", "matched text colour option" }, |
| 439 | { OP_NUMBER, 'C', &both_context, "context=number", "set number of context lines, before & after" }, |
| 440 | { OP_NODATA, 'c', NULL, "count", "print only a count of matching lines per FILE" }, |
| 441 | { OP_STRING, 'D', &DEE_option, "devices=action","how to handle devices, FIFOs, and sockets" }, |
| 442 | { OP_STRING, 'd', &dee_option, "directories=action", "how to handle directories" }, |
| 443 | { OP_PATLIST, 'e', &match_patdata, "regex(p)=pattern", "specify pattern (may be used more than once)" }, |
| 444 | { OP_NODATA, 'F', NULL, "fixed-strings", "patterns are sets of newline-separated strings" }, |
| 445 | { OP_FILELIST, 'f', &pattern_files_data, "file=path", "read patterns from file" }, |
| 446 | { OP_FILELIST, N_FILE_LIST, &file_lists_data, "file-list=path","read files to search from file" }, |
| 447 | { OP_NODATA, N_FOFFSETS, NULL, "file-offsets", "output file offsets, not text" }, |
| 448 | { OP_NODATA, 'H', NULL, "with-filename", "force the prefixing filename on output" }, |
| 449 | { OP_NODATA, 'h', NULL, "no-filename", "suppress the prefixing filename on output" }, |
| 450 | { OP_NODATA, 'I', NULL, "", "treat binary files as not matching (ignore)" }, |
| 451 | { OP_NODATA, 'i', NULL, "ignore-case", "ignore case distinctions" }, |
| 452 | { OP_NODATA, 'l', NULL, "files-with-matches", "print only FILE names containing matches" }, |
| 453 | { OP_NODATA, 'L', NULL, "files-without-match","print only FILE names not containing matches" }, |
| 454 | { OP_STRING, N_LABEL, &stdin_name, "label=name", "set name for standard input" }, |
| 455 | { OP_NODATA, N_LBUFFER, NULL, "line-buffered", "use line buffering" }, |
| 456 | { OP_NODATA, N_LOFFSETS, NULL, "line-offsets", "output line numbers and offsets, not text" }, |
| 457 | { OP_STRING, N_LOCALE, &locale, "locale=locale", "use the named locale" }, |
| 458 | { OP_SIZE, N_H_LIMIT, &heap_limit, "heap-limit=number", "set PCRE2 heap limit option (kibibytes)" }, |
| 459 | { OP_U32NUMBER, N_M_LIMIT, &match_limit, "match-limit=number", "set PCRE2 match limit option" }, |
| 460 | { OP_U32NUMBER, N_M_LIMIT_DEP, &depth_limit, "depth-limit=number", "set PCRE2 depth limit option" }, |
| 461 | { OP_U32NUMBER, N_M_LIMIT_DEP, &depth_limit, "recursion-limit=number", "obsolete synonym for depth-limit" }, |
| 462 | { OP_NODATA, 'M', NULL, "multiline", "run in multiline mode" }, |
| 463 | { OP_NUMBER, 'm', &count_limit, "max-count=number", "stop after <number> matched lines" }, |
| 464 | { OP_STRING, 'N', &newline_arg, "newline=type", "set newline type (CR, LF, CRLF, ANYCRLF, ANY, or NUL)" }, |
| 465 | { OP_NODATA, 'n', NULL, "line-number", "print line number with output lines" }, |
| 466 | #ifdef SUPPORT_PCRE2GREP_JIT |
| 467 | { OP_NODATA, N_NOJIT, NULL, "no-jit", "do not use just-in-time compiler optimization" }, |
| 468 | #else |
| 469 | { OP_NODATA, N_NOJIT, NULL, "no-jit", "ignored: this pcre2grep does not support JIT" }, |
| 470 | #endif |
| 471 | { OP_STRING, 'O', &output_text, "output=text", "show only this text (possibly expanded)" }, |
| 472 | { OP_OP_NUMBERS, 'o', &only_matching_data, "only-matching=n", "show only the part of the line that matched" }, |
| 473 | { OP_STRING, N_OM_SEPARATOR, &om_separator, "om-separator=text", "set separator for multiple -o output" }, |
| 474 | { OP_U32NUMBER, N_OM_CAPTURE, &capture_max, "om-capture=n", "set capture count for --only-matching" }, |
| 475 | { OP_NODATA, 'q', NULL, "quiet", "suppress output, just set return code" }, |
| 476 | { OP_NODATA, 'r', NULL, "recursive", "recursively scan sub-directories" }, |
| 477 | { OP_PATLIST, N_EXCLUDE,&exclude_patdata, "exclude=pattern","exclude matching files when recursing" }, |
| 478 | { OP_PATLIST, N_INCLUDE,&include_patdata, "include=pattern","include matching files when recursing" }, |
| 479 | { OP_PATLIST, N_EXCLUDE_DIR,&exclude_dir_patdata, "exclude-dir=pattern","exclude matching directories when recursing" }, |
| 480 | { OP_PATLIST, N_INCLUDE_DIR,&include_dir_patdata, "include-dir=pattern","include matching directories when recursing" }, |
| 481 | { OP_FILELIST, N_EXCLUDE_FROM,&exclude_from_data, "exclude-from=path", "read exclude list from file" }, |
| 482 | { OP_FILELIST, N_INCLUDE_FROM,&include_from_data, "include-from=path", "read include list from file" }, |
| 483 | #ifdef JFRIEDL_DEBUG |
| 484 | { OP_OP_NUMBER, 'S', &S_arg, "jeffS", "replace matched (sub)string with X" }, |
| 485 | #endif |
| 486 | { OP_NODATA, 's', NULL, "no-messages", "suppress error messages" }, |
| 487 | { OP_NODATA, 't', NULL, "total-count", "print total count of matching lines" }, |
| 488 | { OP_NODATA, 'u', NULL, "utf", "use UTF mode" }, |
| 489 | { OP_NODATA, 'U', NULL, "utf-allow-invalid", "use UTF mode, allow for invalid code units" }, |
| 490 | { OP_NODATA, 'V', NULL, "version", "print version information and exit" }, |
| 491 | { OP_NODATA, 'v', NULL, "invert-match", "select non-matching lines" }, |
| 492 | { OP_NODATA, 'w', NULL, "word-regex(p)", "force patterns to match only as words" }, |
| 493 | { OP_NODATA, 'x', NULL, "line-regex(p)", "force patterns to match only whole lines" }, |
| 494 | { OP_NODATA, N_ALLABSK, NULL, "allow-lookaround-bsk", "allow \\K in lookarounds" }, |
| 495 | { OP_NODATA, 0, NULL, NULL, NULL } |
| 496 | }; |
| 497 | |
| 498 | /* Table of names for newline types. Must be kept in step with the definitions |
| 499 | of PCRE2_NEWLINE_xx in pcre2.h. */ |
| 500 | |
| 501 | static const char *newlines[] = { |
| 502 | "DEFAULT", "CR", "LF", "CRLF", "ANY", "ANYCRLF", "NUL" }; |
| 503 | |
| 504 | /* UTF-8 tables */ |
| 505 | |
| 506 | const int utf8_table1[] = |
| 507 | { 0x7f, 0x7ff, 0xffff, 0x1fffff, 0x3ffffff, 0x7fffffff}; |
| 508 | const int utf8_table1_size = sizeof(utf8_table1) / sizeof(int); |
| 509 | |
| 510 | const int utf8_table2[] = { 0, 0xc0, 0xe0, 0xf0, 0xf8, 0xfc}; |
| 511 | const int utf8_table3[] = { 0xff, 0x1f, 0x0f, 0x07, 0x03, 0x01}; |
| 512 | |
| 513 | const char utf8_table4[] = { |
| 514 | 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, |
| 515 | 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, |
| 516 | 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, |
| 517 | 3,3,3,3,3,3,3,3,4,4,4,4,5,5,5,5 }; |
| 518 | |
| 519 | |
| 520 | #if !defined(VPCOMPAT) && !defined(HAVE_MEMMOVE) |
| 521 | /************************************************* |
| 522 | * Emulated memmove() for systems without it * |
| 523 | *************************************************/ |
| 524 | |
| 525 | /* This function can make use of bcopy() if it is available. Otherwise do it by |
| 526 | steam, as there are some non-Unix environments that lack both memmove() and |
| 527 | bcopy(). */ |
| 528 | |
| 529 | static void * |
| 530 | emulated_memmove(void *d, const void *s, size_t n) |
| 531 | { |
| 532 | #ifdef HAVE_BCOPY |
| 533 | bcopy(s, d, n); |
| 534 | return d; |
| 535 | #else |
| 536 | size_t i; |
| 537 | unsigned char *dest = (unsigned char *)d; |
| 538 | const unsigned char *src = (const unsigned char *)s; |
| 539 | if (dest > src) |
| 540 | { |
| 541 | dest += n; |
| 542 | src += n; |
| 543 | for (i = 0; i < n; ++i) *(--dest) = *(--src); |
| 544 | return (void *)dest; |
| 545 | } |
| 546 | else |
| 547 | { |
| 548 | for (i = 0; i < n; ++i) *dest++ = *src++; |
| 549 | return (void *)(dest - n); |
| 550 | } |
| 551 | #endif /* not HAVE_BCOPY */ |
| 552 | } |
| 553 | #undef memmove |
| 554 | #define memmove(d,s,n) emulated_memmove(d,s,n) |
| 555 | #endif /* not VPCOMPAT && not HAVE_MEMMOVE */ |
| 556 | |
| 557 | |
| 558 | |
| 559 | /************************************************* |
| 560 | * Convert code point to UTF-8 * |
| 561 | *************************************************/ |
| 562 | |
| 563 | /* A static buffer is used. Returns the number of bytes. */ |
| 564 | |
| 565 | static int |
| 566 | ord2utf8(uint32_t value) |
| 567 | { |
| 568 | int i, j; |
| 569 | uint8_t *utf8bytes = utf8_buffer; |
| 570 | for (i = 0; i < utf8_table1_size; i++) |
| 571 | if (value <= (uint32_t)utf8_table1[i]) break; |
| 572 | utf8bytes += i; |
| 573 | for (j = i; j > 0; j--) |
| 574 | { |
| 575 | *utf8bytes-- = 0x80 | (value & 0x3f); |
| 576 | value >>= 6; |
| 577 | } |
| 578 | *utf8bytes = utf8_table2[i] | value; |
| 579 | return i + 1; |
| 580 | } |
| 581 | |
| 582 | |
| 583 | |
| 584 | /************************************************* |
| 585 | * Case-independent string compare * |
| 586 | *************************************************/ |
| 587 | |
| 588 | static int |
| 589 | strcmpic(const char *str1, const char *str2) |
| 590 | { |
| 591 | unsigned int c1, c2; |
| 592 | while (*str1 != '\0' || *str2 != '\0') |
| 593 | { |
| 594 | c1 = tolower(*str1++); |
| 595 | c2 = tolower(*str2++); |
| 596 | if (c1 != c2) return ((c1 > c2) << 1) - 1; |
| 597 | } |
| 598 | return 0; |
| 599 | } |
| 600 | |
| 601 | |
| 602 | /************************************************* |
| 603 | * Parse GREP_COLORS * |
| 604 | *************************************************/ |
| 605 | |
| 606 | /* Extract ms or mt from GREP_COLORS. |
| 607 | |
| 608 | Argument: the string, possibly NULL |
| 609 | Returns: the value of ms or mt, or NULL if neither present |
| 610 | */ |
| 611 | |
| 612 | static char * |
| 613 | parse_grep_colors(const char *gc) |
| 614 | { |
| 615 | static char seq[16]; |
| 616 | char *col; |
| 617 | uint32_t len; |
| 618 | if (gc == NULL) return NULL; |
| 619 | col = strstr(gc, "ms="); |
| 620 | if (col == NULL) col = strstr(gc, "mt="); |
| 621 | if (col == NULL) return NULL; |
| 622 | len = 0; |
| 623 | col += 3; |
| 624 | while (*col != ':' && *col != 0 && len < sizeof(seq)-1) |
| 625 | seq[len++] = *col++; |
| 626 | seq[len] = 0; |
| 627 | return seq; |
| 628 | } |
| 629 | |
| 630 | |
| 631 | /************************************************* |
| 632 | * Exit from the program * |
| 633 | *************************************************/ |
| 634 | |
| 635 | /* If there has been a resource error, give a suitable message. |
| 636 | |
| 637 | Argument: the return code |
| 638 | Returns: does not return |
| 639 | */ |
| 640 | |
| 641 | static void |
| 642 | pcre2grep_exit(int rc) |
| 643 | { |
| 644 | /* VMS does exit codes differently: both exit(1) and exit(0) return with a |
| 645 | status of 1, which is not helpful. To help with this problem, define a symbol |
| 646 | (akin to an environment variable) called "PCRE2GREP_RC" and put the exit code |
| 647 | therein. */ |
| 648 | |
| 649 | #ifdef __VMS |
| 650 | char val_buf[4]; |
| 651 | $DESCRIPTOR(sym_nam, "PCRE2GREP_RC"); |
| 652 | $DESCRIPTOR(sym_val, val_buf); |
| 653 | sprintf(val_buf, "%d", rc); |
| 654 | sym_val.dsc$w_length = strlen(val_buf); |
| 655 | lib$set_symbol(&sym_nam, &sym_val); |
| 656 | #endif |
| 657 | |
| 658 | if (resource_error) |
| 659 | { |
| 660 | fprintf(stderr, "pcre2grep: Error %d, %d, %d or %d means that a resource " |
| 661 | "limit was exceeded.\n", PCRE2_ERROR_JIT_STACKLIMIT, PCRE2_ERROR_MATCHLIMIT, |
| 662 | PCRE2_ERROR_DEPTHLIMIT, PCRE2_ERROR_HEAPLIMIT); |
| 663 | fprintf(stderr, "pcre2grep: Check your regex for nested unlimited loops.\n"); |
| 664 | } |
| 665 | exit(rc); |
| 666 | } |
| 667 | |
| 668 | |
| 669 | /************************************************* |
| 670 | * Add item to chain of patterns * |
| 671 | *************************************************/ |
| 672 | |
| 673 | /* Used to add an item onto a chain, or just return an unconnected item if the |
| 674 | "after" argument is NULL. |
| 675 | |
| 676 | Arguments: |
| 677 | s pattern string to add |
| 678 | patlen length of pattern |
| 679 | after if not NULL points to item to insert after |
| 680 | |
| 681 | Returns: new pattern block or NULL on error |
| 682 | */ |
| 683 | |
| 684 | static patstr * |
| 685 | add_pattern(char *s, PCRE2_SIZE patlen, patstr *after) |
| 686 | { |
| 687 | patstr *p = (patstr *)malloc(sizeof(patstr)); |
| 688 | if (p == NULL) |
| 689 | { |
| 690 | fprintf(stderr, "pcre2grep: malloc failed\n"); |
| 691 | pcre2grep_exit(2); |
| 692 | } |
| 693 | if (patlen > MAXPATLEN) |
| 694 | { |
| 695 | fprintf(stderr, "pcre2grep: pattern is too long (limit is %d bytes)\n", |
| 696 | MAXPATLEN); |
| 697 | free(p); |
| 698 | return NULL; |
| 699 | } |
| 700 | p->next = NULL; |
| 701 | p->string = s; |
| 702 | p->length = patlen; |
| 703 | p->compiled = NULL; |
| 704 | |
| 705 | if (after != NULL) |
| 706 | { |
| 707 | p->next = after->next; |
| 708 | after->next = p; |
| 709 | } |
| 710 | return p; |
| 711 | } |
| 712 | |
| 713 | |
| 714 | /************************************************* |
| 715 | * Free chain of patterns * |
| 716 | *************************************************/ |
| 717 | |
| 718 | /* Used for several chains of patterns. |
| 719 | |
| 720 | Argument: pointer to start of chain |
| 721 | Returns: nothing |
| 722 | */ |
| 723 | |
| 724 | static void |
| 725 | free_pattern_chain(patstr *pc) |
| 726 | { |
| 727 | while (pc != NULL) |
| 728 | { |
| 729 | patstr *p = pc; |
| 730 | pc = p->next; |
| 731 | if (p->compiled != NULL) pcre2_code_free(p->compiled); |
| 732 | free(p); |
| 733 | } |
| 734 | } |
| 735 | |
| 736 | |
| 737 | /************************************************* |
| 738 | * Free chain of file names * |
| 739 | *************************************************/ |
| 740 | |
| 741 | /* |
| 742 | Argument: pointer to start of chain |
| 743 | Returns: nothing |
| 744 | */ |
| 745 | |
| 746 | static void |
| 747 | free_file_chain(fnstr *fn) |
| 748 | { |
| 749 | while (fn != NULL) |
| 750 | { |
| 751 | fnstr *f = fn; |
| 752 | fn = f->next; |
| 753 | free(f); |
| 754 | } |
| 755 | } |
| 756 | |
| 757 | |
| 758 | /************************************************* |
| 759 | * OS-specific functions * |
| 760 | *************************************************/ |
| 761 | |
| 762 | /* These definitions are needed in all Windows environments, even those where |
| 763 | Unix-style directory scanning can be used (see below). */ |
| 764 | |
| 765 | #ifdef WIN32 |
| 766 | |
| 767 | #ifndef STRICT |
| 768 | # define STRICT |
| 769 | #endif |
| 770 | #ifndef WIN32_LEAN_AND_MEAN |
| 771 | # define WIN32_LEAN_AND_MEAN |
| 772 | #endif |
| 773 | |
| 774 | #include <windows.h> |
| 775 | |
| 776 | #define iswild(name) (strpbrk(name, "*?") != NULL) |
| 777 | |
| 778 | /* Convert ANSI BGR format to RGB used by Windows */ |
| 779 | #define BGR_RGB(x) ((x & 1 ? 4 : 0) | (x & 2) | (x & 4 ? 1 : 0)) |
| 780 | |
| 781 | static HANDLE hstdout; |
| 782 | static CONSOLE_SCREEN_BUFFER_INFO csbi; |
| 783 | static WORD match_colour; |
| 784 | |
| 785 | static WORD |
| 786 | decode_ANSI_colour(const char *cs) |
| 787 | { |
| 788 | WORD result = csbi.wAttributes; |
| 789 | while (*cs) |
| 790 | { |
| 791 | if (isdigit(*cs)) |
| 792 | { |
| 793 | int code = atoi(cs); |
| 794 | if (code == 1) result |= 0x08; |
| 795 | else if (code == 4) result |= 0x8000; |
| 796 | else if (code == 5) result |= 0x80; |
| 797 | else if (code >= 30 && code <= 37) result = (result & 0xF8) | BGR_RGB(code - 30); |
| 798 | else if (code == 39) result = (result & 0xF0) | (csbi.wAttributes & 0x0F); |
| 799 | else if (code >= 40 && code <= 47) result = (result & 0x8F) | (BGR_RGB(code - 40) << 4); |
| 800 | else if (code == 49) result = (result & 0x0F) | (csbi.wAttributes & 0xF0); |
| 801 | /* aixterm high intensity colour codes */ |
| 802 | else if (code >= 90 && code <= 97) result = (result & 0xF0) | BGR_RGB(code - 90) | 0x08; |
| 803 | else if (code >= 100 && code <= 107) result = (result & 0x0F) | (BGR_RGB(code - 100) << 4) | 0x80; |
| 804 | |
| 805 | while (isdigit(*cs)) cs++; |
| 806 | } |
| 807 | if (*cs) cs++; |
| 808 | } |
| 809 | return result; |
| 810 | } |
| 811 | |
| 812 | |
| 813 | static void |
| 814 | init_colour_output() |
| 815 | { |
| 816 | if (do_colour) |
| 817 | { |
| 818 | hstdout = GetStdHandle(STD_OUTPUT_HANDLE); |
| 819 | /* This fails when redirected to con; try again if so. */ |
| 820 | if (!GetConsoleScreenBufferInfo(hstdout, &csbi) && !do_ansi) |
| 821 | { |
| 822 | HANDLE hcon = CreateFile("CONOUT$", GENERIC_READ | GENERIC_WRITE, |
| 823 | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, NULL); |
| 824 | GetConsoleScreenBufferInfo(hcon, &csbi); |
| 825 | CloseHandle(hcon); |
| 826 | } |
| 827 | match_colour = decode_ANSI_colour(colour_string); |
| 828 | /* No valid colour found - turn off colouring */ |
| 829 | if (!match_colour) do_colour = FALSE; |
| 830 | } |
| 831 | } |
| 832 | |
| 833 | #endif /* WIN32 */ |
| 834 | |
| 835 | |
| 836 | /* The following sets of functions are defined so that they can be made system |
| 837 | specific. At present there are versions for Unix-style environments, Windows, |
| 838 | native z/OS, and "no support". */ |
| 839 | |
| 840 | |
| 841 | /************* Directory scanning Unix-style and z/OS ***********/ |
| 842 | |
| 843 | #if (defined HAVE_SYS_STAT_H && defined HAVE_DIRENT_H && defined HAVE_SYS_TYPES_H) || defined NATIVE_ZOS |
| 844 | #include <sys/types.h> |
| 845 | #include <sys/stat.h> |
| 846 | #include <dirent.h> |
| 847 | |
| 848 | #if defined NATIVE_ZOS |
| 849 | /************* Directory and PDS/E scanning for z/OS ***********/ |
| 850 | /************* z/OS looks mostly like Unix with USS ************/ |
| 851 | /* However, z/OS needs the #include statements in this header */ |
| 852 | #include "pcrzosfs.h" |
| 853 | /* That header is not included in the main PCRE distribution because |
| 854 | other apparatus is needed to compile pcre2grep for z/OS. The header |
| 855 | can be found in the special z/OS distribution, which is available |
| 856 | from www.zaconsultants.net or from www.cbttape.org. */ |
| 857 | #endif |
| 858 | |
| 859 | typedef DIR directory_type; |
| 860 | #define FILESEP '/' |
| 861 | |
| 862 | static int |
| 863 | isdirectory(char *filename) |
| 864 | { |
| 865 | struct stat statbuf; |
| 866 | if (stat(filename, &statbuf) < 0) |
| 867 | return 0; /* In the expectation that opening as a file will fail */ |
| 868 | return S_ISDIR(statbuf.st_mode); |
| 869 | } |
| 870 | |
| 871 | static directory_type * |
| 872 | opendirectory(char *filename) |
| 873 | { |
| 874 | return opendir(filename); |
| 875 | } |
| 876 | |
| 877 | static char * |
| 878 | readdirectory(directory_type *dir) |
| 879 | { |
| 880 | for (;;) |
| 881 | { |
| 882 | struct dirent *dent = readdir(dir); |
| 883 | if (dent == NULL) return NULL; |
| 884 | if (strcmp(dent->d_name, ".") != 0 && strcmp(dent->d_name, "..") != 0) |
| 885 | return dent->d_name; |
| 886 | } |
| 887 | /* Control never reaches here */ |
| 888 | } |
| 889 | |
| 890 | static void |
| 891 | closedirectory(directory_type *dir) |
| 892 | { |
| 893 | closedir(dir); |
| 894 | } |
| 895 | |
| 896 | |
| 897 | /************* Test for regular file, Unix-style **********/ |
| 898 | |
| 899 | static int |
| 900 | isregfile(char *filename) |
| 901 | { |
| 902 | struct stat statbuf; |
| 903 | if (stat(filename, &statbuf) < 0) |
| 904 | return 1; /* In the expectation that opening as a file will fail */ |
| 905 | return S_ISREG(statbuf.st_mode); |
| 906 | } |
| 907 | |
| 908 | |
| 909 | #if defined NATIVE_ZOS |
| 910 | /************* Test for a terminal in z/OS **********/ |
| 911 | /* isatty() does not work in a TSO environment, so always give FALSE.*/ |
| 912 | |
| 913 | static BOOL |
| 914 | is_stdout_tty(void) |
| 915 | { |
| 916 | return FALSE; |
| 917 | } |
| 918 | |
| 919 | static BOOL |
| 920 | is_file_tty(FILE *f) |
| 921 | { |
| 922 | return FALSE; |
| 923 | } |
| 924 | |
| 925 | |
| 926 | /************* Test for a terminal, Unix-style **********/ |
| 927 | |
| 928 | #else |
| 929 | static BOOL |
| 930 | is_stdout_tty(void) |
| 931 | { |
| 932 | return isatty(fileno(stdout)); |
| 933 | } |
| 934 | |
| 935 | static BOOL |
| 936 | is_file_tty(FILE *f) |
| 937 | { |
| 938 | return isatty(fileno(f)); |
| 939 | } |
| 940 | #endif |
| 941 | |
| 942 | |
| 943 | /************* Print optionally coloured match Unix-style and z/OS **********/ |
| 944 | |
| 945 | static void |
| 946 | print_match(const void *buf, int length) |
| 947 | { |
| 948 | if (length == 0) return; |
| 949 | if (do_colour) fprintf(stdout, "%c[%sm", 0x1b, colour_string); |
| 950 | FWRITE_IGNORE(buf, 1, length, stdout); |
| 951 | if (do_colour) fprintf(stdout, "%c[0m", 0x1b); |
| 952 | } |
| 953 | |
| 954 | /* End of Unix-style or native z/OS environment functions. */ |
| 955 | |
| 956 | |
| 957 | /************* Directory scanning in Windows ***********/ |
| 958 | |
| 959 | /* I (Philip Hazel) have no means of testing this code. It was contributed by |
| 960 | Lionel Fourquaux. David Burgess added a patch to define INVALID_FILE_ATTRIBUTES |
| 961 | when it did not exist. David Byron added a patch that moved the #include of |
| 962 | <windows.h> to before the INVALID_FILE_ATTRIBUTES definition rather than after. |
| 963 | */ |
| 964 | |
| 965 | #elif defined WIN32 |
| 966 | |
| 967 | #ifndef INVALID_FILE_ATTRIBUTES |
| 968 | #define INVALID_FILE_ATTRIBUTES 0xFFFFFFFF |
| 969 | #endif |
| 970 | |
| 971 | typedef struct directory_type |
| 972 | { |
| 973 | HANDLE handle; |
| 974 | BOOL first; |
| 975 | WIN32_FIND_DATA data; |
| 976 | } directory_type; |
| 977 | |
| 978 | #define FILESEP '/' |
| 979 | |
| 980 | int |
| 981 | isdirectory(char *filename) |
| 982 | { |
| 983 | DWORD attr = GetFileAttributes(filename); |
| 984 | if (attr == INVALID_FILE_ATTRIBUTES) |
| 985 | return 0; |
| 986 | return (attr & FILE_ATTRIBUTE_DIRECTORY) != 0; |
| 987 | } |
| 988 | |
| 989 | directory_type * |
| 990 | opendirectory(char *filename) |
| 991 | { |
| 992 | size_t len; |
| 993 | char *pattern; |
| 994 | directory_type *dir; |
| 995 | DWORD err; |
| 996 | len = strlen(filename); |
| 997 | pattern = (char *)malloc(len + 3); |
| 998 | dir = (directory_type *)malloc(sizeof(*dir)); |
| 999 | if ((pattern == NULL) || (dir == NULL)) |
| 1000 | { |
| 1001 | fprintf(stderr, "pcre2grep: malloc failed\n"); |
| 1002 | pcre2grep_exit(2); |
| 1003 | } |
| 1004 | memcpy(pattern, filename, len); |
| 1005 | if (iswild(filename)) |
| 1006 | pattern[len] = 0; |
| 1007 | else |
| 1008 | memcpy(&(pattern[len]), "\\*", 3); |
| 1009 | dir->handle = FindFirstFile(pattern, &(dir->data)); |
| 1010 | if (dir->handle != INVALID_HANDLE_VALUE) |
| 1011 | { |
| 1012 | free(pattern); |
| 1013 | dir->first = TRUE; |
| 1014 | return dir; |
| 1015 | } |
| 1016 | err = GetLastError(); |
| 1017 | free(pattern); |
| 1018 | free(dir); |
| 1019 | errno = (err == ERROR_ACCESS_DENIED) ? EACCES : ENOENT; |
| 1020 | return NULL; |
| 1021 | } |
| 1022 | |
| 1023 | char * |
| 1024 | readdirectory(directory_type *dir) |
| 1025 | { |
| 1026 | for (;;) |
| 1027 | { |
| 1028 | if (!dir->first) |
| 1029 | { |
| 1030 | if (!FindNextFile(dir->handle, &(dir->data))) |
| 1031 | return NULL; |
| 1032 | } |
| 1033 | else |
| 1034 | { |
| 1035 | dir->first = FALSE; |
| 1036 | } |
| 1037 | if (strcmp(dir->data.cFileName, ".") != 0 && strcmp(dir->data.cFileName, "..") != 0) |
| 1038 | return dir->data.cFileName; |
| 1039 | } |
| 1040 | #ifndef _MSC_VER |
| 1041 | return NULL; /* Keep compiler happy; never executed */ |
| 1042 | #endif |
| 1043 | } |
| 1044 | |
| 1045 | void |
| 1046 | closedirectory(directory_type *dir) |
| 1047 | { |
| 1048 | FindClose(dir->handle); |
| 1049 | free(dir); |
| 1050 | } |
| 1051 | |
| 1052 | |
| 1053 | /************* Test for regular file in Windows **********/ |
| 1054 | |
| 1055 | /* I don't know how to do this, or if it can be done; assume all paths are |
| 1056 | regular if they are not directories. */ |
| 1057 | |
| 1058 | int isregfile(char *filename) |
| 1059 | { |
| 1060 | return !isdirectory(filename); |
| 1061 | } |
| 1062 | |
| 1063 | |
| 1064 | /************* Test for a terminal in Windows **********/ |
| 1065 | |
| 1066 | static BOOL |
| 1067 | is_stdout_tty(void) |
| 1068 | { |
| 1069 | return _isatty(_fileno(stdout)); |
| 1070 | } |
| 1071 | |
| 1072 | static BOOL |
| 1073 | is_file_tty(FILE *f) |
| 1074 | { |
| 1075 | return _isatty(_fileno(f)); |
| 1076 | } |
| 1077 | |
| 1078 | |
| 1079 | /************* Print optionally coloured match in Windows **********/ |
| 1080 | |
| 1081 | static void |
| 1082 | print_match(const void *buf, int length) |
| 1083 | { |
| 1084 | if (length == 0) return; |
| 1085 | if (do_colour) |
| 1086 | { |
| 1087 | if (do_ansi) fprintf(stdout, "%c[%sm", 0x1b, colour_string); |
| 1088 | else SetConsoleTextAttribute(hstdout, match_colour); |
| 1089 | } |
| 1090 | FWRITE_IGNORE(buf, 1, length, stdout); |
| 1091 | if (do_colour) |
| 1092 | { |
| 1093 | if (do_ansi) fprintf(stdout, "%c[0m", 0x1b); |
| 1094 | else SetConsoleTextAttribute(hstdout, csbi.wAttributes); |
| 1095 | } |
| 1096 | } |
| 1097 | |
| 1098 | /* End of Windows functions */ |
| 1099 | |
| 1100 | |
| 1101 | /************* Directory scanning when we can't do it ***********/ |
| 1102 | |
| 1103 | /* The type is void, and apart from isdirectory(), the functions do nothing. */ |
| 1104 | |
| 1105 | #else |
| 1106 | |
| 1107 | #define FILESEP 0 |
| 1108 | typedef void directory_type; |
| 1109 | |
| 1110 | int isdirectory(char *filename) { return 0; } |
| 1111 | directory_type * opendirectory(char *filename) { return (directory_type*)0;} |
| 1112 | char *readdirectory(directory_type *dir) { return (char*)0;} |
| 1113 | void closedirectory(directory_type *dir) {} |
| 1114 | |
| 1115 | |
| 1116 | /************* Test for regular file when we can't do it **********/ |
| 1117 | |
| 1118 | /* Assume all files are regular. */ |
| 1119 | |
| 1120 | int isregfile(char *filename) { return 1; } |
| 1121 | |
| 1122 | |
| 1123 | /************* Test for a terminal when we can't do it **********/ |
| 1124 | |
| 1125 | static BOOL |
| 1126 | is_stdout_tty(void) |
| 1127 | { |
| 1128 | return FALSE; |
| 1129 | } |
| 1130 | |
| 1131 | static BOOL |
| 1132 | is_file_tty(FILE *f) |
| 1133 | { |
| 1134 | return FALSE; |
| 1135 | } |
| 1136 | |
| 1137 | |
| 1138 | /************* Print optionally coloured match when we can't do it **********/ |
| 1139 | |
| 1140 | static void |
| 1141 | print_match(const void *buf, int length) |
| 1142 | { |
| 1143 | if (length == 0) return; |
| 1144 | FWRITE_IGNORE(buf, 1, length, stdout); |
| 1145 | } |
| 1146 | |
| 1147 | #endif /* End of system-specific functions */ |
| 1148 | |
| 1149 | |
| 1150 | |
| 1151 | #ifndef HAVE_STRERROR |
| 1152 | /************************************************* |
| 1153 | * Provide strerror() for non-ANSI libraries * |
| 1154 | *************************************************/ |
| 1155 | |
| 1156 | /* Some old-fashioned systems still around (e.g. SunOS4) don't have strerror() |
| 1157 | in their libraries, but can provide the same facility by this simple |
| 1158 | alternative function. */ |
| 1159 | |
| 1160 | extern int sys_nerr; |
| 1161 | extern char *sys_errlist[]; |
| 1162 | |
| 1163 | char * |
| 1164 | strerror(int n) |
| 1165 | { |
| 1166 | if (n < 0 || n >= sys_nerr) return "unknown error number"; |
| 1167 | return sys_errlist[n]; |
| 1168 | } |
| 1169 | #endif /* HAVE_STRERROR */ |
| 1170 | |
| 1171 | |
| 1172 | |
| 1173 | /************************************************* |
| 1174 | * Usage function * |
| 1175 | *************************************************/ |
| 1176 | |
| 1177 | static int |
| 1178 | usage(int rc) |
| 1179 | { |
| 1180 | option_item *op; |
| 1181 | fprintf(stderr, "Usage: pcre2grep [-"); |
| 1182 | for (op = optionlist; op->one_char != 0; op++) |
| 1183 | { |
| 1184 | if (op->one_char > 0) fprintf(stderr, "%c", op->one_char); |
| 1185 | } |
| 1186 | fprintf(stderr, "] [long options] [pattern] [files]\n"); |
| 1187 | fprintf(stderr, "Type \"pcre2grep --help\" for more information and the long " |
| 1188 | "options.\n"); |
| 1189 | return rc; |
| 1190 | } |
| 1191 | |
| 1192 | |
| 1193 | |
| 1194 | /************************************************* |
| 1195 | * Help function * |
| 1196 | *************************************************/ |
| 1197 | |
| 1198 | static void |
| 1199 | help(void) |
| 1200 | { |
| 1201 | option_item *op; |
| 1202 | |
| 1203 | printf("Usage: pcre2grep [OPTION]... [PATTERN] [FILE1 FILE2 ...]" STDOUT_NL); |
| 1204 | printf("Search for PATTERN in each FILE or standard input." STDOUT_NL); |
| 1205 | printf("PATTERN must be present if neither -e nor -f is used." STDOUT_NL); |
| 1206 | |
| 1207 | #ifdef SUPPORT_PCRE2GREP_CALLOUT |
| 1208 | #ifdef SUPPORT_PCRE2GREP_CALLOUT_FORK |
| 1209 | printf("All callout scripts in patterns are supported." STDOUT_NL); |
| 1210 | #else |
| 1211 | printf("Non-fork callout scripts in patterns are supported." STDOUT_NL); |
| 1212 | #endif |
| 1213 | #else |
| 1214 | printf("Callout scripts are not supported in this pcre2grep." STDOUT_NL); |
| 1215 | #endif |
| 1216 | |
| 1217 | printf("\"-\" can be used as a file name to mean STDIN." STDOUT_NL); |
| 1218 | |
| 1219 | #ifdef SUPPORT_LIBZ |
| 1220 | printf("Files whose names end in .gz are read using zlib." STDOUT_NL); |
| 1221 | #endif |
| 1222 | |
| 1223 | #ifdef SUPPORT_LIBBZ2 |
| 1224 | printf("Files whose names end in .bz2 are read using bzlib2." STDOUT_NL); |
| 1225 | #endif |
| 1226 | |
| 1227 | #if defined SUPPORT_LIBZ || defined SUPPORT_LIBBZ2 |
| 1228 | printf("Other files and the standard input are read as plain files." STDOUT_NL STDOUT_NL); |
| 1229 | #else |
| 1230 | printf("All files are read as plain files, without any interpretation." STDOUT_NL STDOUT_NL); |
| 1231 | #endif |
| 1232 | |
| 1233 | printf("Example: pcre2grep -i " QUOT "hello.*world" QUOT " menu.h main.c" STDOUT_NL STDOUT_NL); |
| 1234 | printf("Options:" STDOUT_NL); |
| 1235 | |
| 1236 | for (op = optionlist; op->one_char != 0; op++) |
| 1237 | { |
| 1238 | int n; |
| 1239 | char s[4]; |
| 1240 | |
| 1241 | if (op->one_char > 0 && (op->long_name)[0] == 0) |
| 1242 | n = 31 - printf(" -%c", op->one_char); |
| 1243 | else |
| 1244 | { |
| 1245 | if (op->one_char > 0) sprintf(s, "-%c,", op->one_char); |
| 1246 | else strcpy(s, " "); |
| 1247 | n = 31 - printf(" %s --%s", s, op->long_name); |
| 1248 | } |
| 1249 | |
| 1250 | if (n < 1) n = 1; |
| 1251 | printf("%.*s%s" STDOUT_NL, n, " ", op->help_text); |
| 1252 | } |
| 1253 | |
| 1254 | printf(STDOUT_NL "Numbers may be followed by K or M, e.g. --max-buffer-size=100K." STDOUT_NL); |
| 1255 | printf("The default value for --buffer-size is %d." STDOUT_NL, PCRE2GREP_BUFSIZE); |
| 1256 | printf("The default value for --max-buffer-size is %d." STDOUT_NL, PCRE2GREP_MAX_BUFSIZE); |
| 1257 | printf("When reading patterns or file names from a file, trailing white" STDOUT_NL); |
| 1258 | printf("space is removed and blank lines are ignored." STDOUT_NL); |
| 1259 | printf("The maximum size of any pattern is %d bytes." STDOUT_NL, MAXPATLEN); |
| 1260 | |
| 1261 | printf(STDOUT_NL "With no FILEs, read standard input. If fewer than two FILEs given, assume -h." STDOUT_NL); |
| 1262 | printf("Exit status is 0 if any matches, 1 if no matches, and 2 if trouble." STDOUT_NL); |
| 1263 | } |
| 1264 | |
| 1265 | |
| 1266 | |
| 1267 | /************************************************* |
| 1268 | * Test exclude/includes * |
| 1269 | *************************************************/ |
| 1270 | |
| 1271 | /* If any exclude pattern matches, the path is excluded. Otherwise, unless |
| 1272 | there are no includes, the path must match an include pattern. |
| 1273 | |
| 1274 | Arguments: |
| 1275 | path the path to be matched |
| 1276 | ip the chain of include patterns |
| 1277 | ep the chain of exclude patterns |
| 1278 | |
| 1279 | Returns: TRUE if the path is not excluded |
| 1280 | */ |
| 1281 | |
| 1282 | static BOOL |
| 1283 | test_incexc(char *path, patstr *ip, patstr *ep) |
| 1284 | { |
| 1285 | int plen = strlen((const char *)path); |
| 1286 | |
| 1287 | for (; ep != NULL; ep = ep->next) |
| 1288 | { |
| 1289 | if (pcre2_match(ep->compiled, (PCRE2_SPTR)path, plen, 0, 0, match_data, NULL) >= 0) |
| 1290 | return FALSE; |
| 1291 | } |
| 1292 | |
| 1293 | if (ip == NULL) return TRUE; |
| 1294 | |
| 1295 | for (; ip != NULL; ip = ip->next) |
| 1296 | { |
| 1297 | if (pcre2_match(ip->compiled, (PCRE2_SPTR)path, plen, 0, 0, match_data, NULL) >= 0) |
| 1298 | return TRUE; |
| 1299 | } |
| 1300 | |
| 1301 | return FALSE; |
| 1302 | } |
| 1303 | |
| 1304 | |
| 1305 | |
| 1306 | /************************************************* |
| 1307 | * Decode integer argument value * |
| 1308 | *************************************************/ |
| 1309 | |
| 1310 | /* Integer arguments can be followed by K or M. Avoid the use of strtoul() |
| 1311 | because SunOS4 doesn't have it. This is used only for unpicking arguments, so |
| 1312 | just keep it simple. |
| 1313 | |
| 1314 | Arguments: |
| 1315 | option_data the option data string |
| 1316 | op the option item (for error messages) |
| 1317 | longop TRUE if option given in long form |
| 1318 | |
| 1319 | Returns: a long integer |
| 1320 | */ |
| 1321 | |
| 1322 | static long int |
| 1323 | decode_number(char *option_data, option_item *op, BOOL longop) |
| 1324 | { |
| 1325 | unsigned long int n = 0; |
| 1326 | char *endptr = option_data; |
| 1327 | while (*endptr != 0 && isspace((unsigned char)(*endptr))) endptr++; |
| 1328 | while (isdigit((unsigned char)(*endptr))) |
| 1329 | n = n * 10 + (int)(*endptr++ - '0'); |
| 1330 | if (toupper(*endptr) == 'K') |
| 1331 | { |
| 1332 | n *= 1024; |
| 1333 | endptr++; |
| 1334 | } |
| 1335 | else if (toupper(*endptr) == 'M') |
| 1336 | { |
| 1337 | n *= 1024*1024; |
| 1338 | endptr++; |
| 1339 | } |
| 1340 | |
| 1341 | if (*endptr != 0) /* Error */ |
| 1342 | { |
| 1343 | if (longop) |
| 1344 | { |
| 1345 | char *equals = strchr(op->long_name, '='); |
| 1346 | int nlen = (equals == NULL)? (int)strlen(op->long_name) : |
| 1347 | (int)(equals - op->long_name); |
| 1348 | fprintf(stderr, "pcre2grep: Malformed number \"%s\" after --%.*s\n", |
| 1349 | option_data, nlen, op->long_name); |
| 1350 | } |
| 1351 | else |
| 1352 | fprintf(stderr, "pcre2grep: Malformed number \"%s\" after -%c\n", |
| 1353 | option_data, op->one_char); |
| 1354 | pcre2grep_exit(usage(2)); |
| 1355 | } |
| 1356 | |
| 1357 | return n; |
| 1358 | } |
| 1359 | |
| 1360 | |
| 1361 | |
| 1362 | /************************************************* |
| 1363 | * Add item to a chain of numbers * |
| 1364 | *************************************************/ |
| 1365 | |
| 1366 | /* Used to add an item onto a chain, or just return an unconnected item if the |
| 1367 | "after" argument is NULL. |
| 1368 | |
| 1369 | Arguments: |
| 1370 | n the number to add |
| 1371 | after if not NULL points to item to insert after |
| 1372 | |
| 1373 | Returns: new number block |
| 1374 | */ |
| 1375 | |
| 1376 | static omstr * |
| 1377 | add_number(int n, omstr *after) |
| 1378 | { |
| 1379 | omstr *om = (omstr *)malloc(sizeof(omstr)); |
| 1380 | |
| 1381 | if (om == NULL) |
| 1382 | { |
| 1383 | fprintf(stderr, "pcre2grep: malloc failed\n"); |
| 1384 | pcre2grep_exit(2); |
| 1385 | } |
| 1386 | om->next = NULL; |
| 1387 | om->groupnum = n; |
| 1388 | |
| 1389 | if (after != NULL) |
| 1390 | { |
| 1391 | om->next = after->next; |
| 1392 | after->next = om; |
| 1393 | } |
| 1394 | return om; |
| 1395 | } |
| 1396 | |
| 1397 | |
| 1398 | |
| 1399 | /************************************************* |
| 1400 | * Read one line of input * |
| 1401 | *************************************************/ |
| 1402 | |
| 1403 | /* Normally, input that is to be scanned is read using fread() (or gzread, or |
| 1404 | BZ2_read) into a large buffer, so many lines may be read at once. However, |
| 1405 | doing this for tty input means that no output appears until a lot of input has |
| 1406 | been typed. Instead, tty input is handled line by line. We cannot use fgets() |
| 1407 | for this, because it does not stop at a binary zero, and therefore there is no |
| 1408 | way of telling how many characters it has read, because there may be binary |
| 1409 | zeros embedded in the data. This function is also used for reading patterns |
| 1410 | from files (the -f option). |
| 1411 | |
| 1412 | Arguments: |
| 1413 | buffer the buffer to read into |
| 1414 | length the maximum number of characters to read |
| 1415 | f the file |
| 1416 | |
| 1417 | Returns: the number of characters read, zero at end of file |
| 1418 | */ |
| 1419 | |
| 1420 | static PCRE2_SIZE |
| 1421 | read_one_line(char *buffer, int length, FILE *f) |
| 1422 | { |
| 1423 | int c; |
| 1424 | int yield = 0; |
| 1425 | while ((c = fgetc(f)) != EOF) |
| 1426 | { |
| 1427 | buffer[yield++] = c; |
| 1428 | if (c == '\n' || yield >= length) break; |
| 1429 | } |
| 1430 | return yield; |
| 1431 | } |
| 1432 | |
| 1433 | |
| 1434 | |
| 1435 | /************************************************* |
| 1436 | * Find end of line * |
| 1437 | *************************************************/ |
| 1438 | |
| 1439 | /* The length of the endline sequence that is found is set via lenptr. This may |
| 1440 | be zero at the very end of the file if there is no line-ending sequence there. |
| 1441 | |
| 1442 | Arguments: |
| 1443 | p current position in line |
| 1444 | endptr end of available data |
| 1445 | lenptr where to put the length of the eol sequence |
| 1446 | |
| 1447 | Returns: pointer after the last byte of the line, |
| 1448 | including the newline byte(s) |
| 1449 | */ |
| 1450 | |
| 1451 | static char * |
| 1452 | end_of_line(char *p, char *endptr, int *lenptr) |
| 1453 | { |
| 1454 | switch(endlinetype) |
| 1455 | { |
| 1456 | default: /* Just in case */ |
| 1457 | case PCRE2_NEWLINE_LF: |
| 1458 | while (p < endptr && *p != '\n') p++; |
| 1459 | if (p < endptr) |
| 1460 | { |
| 1461 | *lenptr = 1; |
| 1462 | return p + 1; |
| 1463 | } |
| 1464 | *lenptr = 0; |
| 1465 | return endptr; |
| 1466 | |
| 1467 | case PCRE2_NEWLINE_CR: |
| 1468 | while (p < endptr && *p != '\r') p++; |
| 1469 | if (p < endptr) |
| 1470 | { |
| 1471 | *lenptr = 1; |
| 1472 | return p + 1; |
| 1473 | } |
| 1474 | *lenptr = 0; |
| 1475 | return endptr; |
| 1476 | |
| 1477 | case PCRE2_NEWLINE_NUL: |
| 1478 | while (p < endptr && *p != '\0') p++; |
| 1479 | if (p < endptr) |
| 1480 | { |
| 1481 | *lenptr = 1; |
| 1482 | return p + 1; |
| 1483 | } |
| 1484 | *lenptr = 0; |
| 1485 | return endptr; |
| 1486 | |
| 1487 | case PCRE2_NEWLINE_CRLF: |
| 1488 | for (;;) |
| 1489 | { |
| 1490 | while (p < endptr && *p != '\r') p++; |
| 1491 | if (++p >= endptr) |
| 1492 | { |
| 1493 | *lenptr = 0; |
| 1494 | return endptr; |
| 1495 | } |
| 1496 | if (*p == '\n') |
| 1497 | { |
| 1498 | *lenptr = 2; |
| 1499 | return p + 1; |
| 1500 | } |
| 1501 | } |
| 1502 | break; |
| 1503 | |
| 1504 | case PCRE2_NEWLINE_ANYCRLF: |
| 1505 | while (p < endptr) |
| 1506 | { |
| 1507 | int extra = 0; |
| 1508 | int c = *((unsigned char *)p); |
| 1509 | |
| 1510 | if (utf && c >= 0xc0) |
| 1511 | { |
| 1512 | int gcii, gcss; |
| 1513 | extra = utf8_table4[c & 0x3f]; /* Number of additional bytes */ |
| 1514 | gcss = 6*extra; |
| 1515 | c = (c & utf8_table3[extra]) << gcss; |
| 1516 | for (gcii = 1; gcii <= extra; gcii++) |
| 1517 | { |
| 1518 | gcss -= 6; |
| 1519 | c |= (p[gcii] & 0x3f) << gcss; |
| 1520 | } |
| 1521 | } |
| 1522 | |
| 1523 | p += 1 + extra; |
| 1524 | |
| 1525 | switch (c) |
| 1526 | { |
| 1527 | case '\n': |
| 1528 | *lenptr = 1; |
| 1529 | return p; |
| 1530 | |
| 1531 | case '\r': |
| 1532 | if (p < endptr && *p == '\n') |
| 1533 | { |
| 1534 | *lenptr = 2; |
| 1535 | p++; |
| 1536 | } |
| 1537 | else *lenptr = 1; |
| 1538 | return p; |
| 1539 | |
| 1540 | default: |
| 1541 | break; |
| 1542 | } |
| 1543 | } /* End of loop for ANYCRLF case */ |
| 1544 | |
| 1545 | *lenptr = 0; /* Must have hit the end */ |
| 1546 | return endptr; |
| 1547 | |
| 1548 | case PCRE2_NEWLINE_ANY: |
| 1549 | while (p < endptr) |
| 1550 | { |
| 1551 | int extra = 0; |
| 1552 | int c = *((unsigned char *)p); |
| 1553 | |
| 1554 | if (utf && c >= 0xc0) |
| 1555 | { |
| 1556 | int gcii, gcss; |
| 1557 | extra = utf8_table4[c & 0x3f]; /* Number of additional bytes */ |
| 1558 | gcss = 6*extra; |
| 1559 | c = (c & utf8_table3[extra]) << gcss; |
| 1560 | for (gcii = 1; gcii <= extra; gcii++) |
| 1561 | { |
| 1562 | gcss -= 6; |
| 1563 | c |= (p[gcii] & 0x3f) << gcss; |
| 1564 | } |
| 1565 | } |
| 1566 | |
| 1567 | p += 1 + extra; |
| 1568 | |
| 1569 | switch (c) |
| 1570 | { |
| 1571 | case '\n': /* LF */ |
| 1572 | case '\v': /* VT */ |
| 1573 | case '\f': /* FF */ |
| 1574 | *lenptr = 1; |
| 1575 | return p; |
| 1576 | |
| 1577 | case '\r': /* CR */ |
| 1578 | if (p < endptr && *p == '\n') |
| 1579 | { |
| 1580 | *lenptr = 2; |
| 1581 | p++; |
| 1582 | } |
| 1583 | else *lenptr = 1; |
| 1584 | return p; |
| 1585 | |
| 1586 | #ifndef EBCDIC |
| 1587 | case 0x85: /* Unicode NEL */ |
| 1588 | *lenptr = utf? 2 : 1; |
| 1589 | return p; |
| 1590 | |
| 1591 | case 0x2028: /* Unicode LS */ |
| 1592 | case 0x2029: /* Unicode PS */ |
| 1593 | *lenptr = 3; |
| 1594 | return p; |
| 1595 | #endif /* Not EBCDIC */ |
| 1596 | |
| 1597 | default: |
| 1598 | break; |
| 1599 | } |
| 1600 | } /* End of loop for ANY case */ |
| 1601 | |
| 1602 | *lenptr = 0; /* Must have hit the end */ |
| 1603 | return endptr; |
| 1604 | } /* End of overall switch */ |
| 1605 | } |
| 1606 | |
| 1607 | |
| 1608 | |
| 1609 | /************************************************* |
| 1610 | * Find start of previous line * |
| 1611 | *************************************************/ |
| 1612 | |
| 1613 | /* This is called when looking back for before lines to print. |
| 1614 | |
| 1615 | Arguments: |
| 1616 | p start of the subsequent line |
| 1617 | startptr start of available data |
| 1618 | |
| 1619 | Returns: pointer to the start of the previous line |
| 1620 | */ |
| 1621 | |
| 1622 | static char * |
| 1623 | previous_line(char *p, char *startptr) |
| 1624 | { |
| 1625 | switch(endlinetype) |
| 1626 | { |
| 1627 | default: /* Just in case */ |
| 1628 | case PCRE2_NEWLINE_LF: |
| 1629 | p--; |
| 1630 | while (p > startptr && p[-1] != '\n') p--; |
| 1631 | return p; |
| 1632 | |
| 1633 | case PCRE2_NEWLINE_CR: |
| 1634 | p--; |
| 1635 | while (p > startptr && p[-1] != '\n') p--; |
| 1636 | return p; |
| 1637 | |
| 1638 | case PCRE2_NEWLINE_NUL: |
| 1639 | p--; |
| 1640 | while (p > startptr && p[-1] != '\0') p--; |
| 1641 | return p; |
| 1642 | |
| 1643 | case PCRE2_NEWLINE_CRLF: |
| 1644 | for (;;) |
| 1645 | { |
| 1646 | p -= 2; |
| 1647 | while (p > startptr && p[-1] != '\n') p--; |
| 1648 | if (p <= startptr + 1 || p[-2] == '\r') return p; |
| 1649 | } |
| 1650 | /* Control can never get here */ |
| 1651 | |
| 1652 | case PCRE2_NEWLINE_ANY: |
| 1653 | case PCRE2_NEWLINE_ANYCRLF: |
| 1654 | if (*(--p) == '\n' && p > startptr && p[-1] == '\r') p--; |
| 1655 | if (utf) while ((*p & 0xc0) == 0x80) p--; |
| 1656 | |
| 1657 | while (p > startptr) |
| 1658 | { |
| 1659 | unsigned int c; |
| 1660 | char *pp = p - 1; |
| 1661 | |
| 1662 | if (utf) |
| 1663 | { |
| 1664 | int extra = 0; |
| 1665 | while ((*pp & 0xc0) == 0x80) pp--; |
| 1666 | c = *((unsigned char *)pp); |
| 1667 | if (c >= 0xc0) |
| 1668 | { |
| 1669 | int gcii, gcss; |
| 1670 | extra = utf8_table4[c & 0x3f]; /* Number of additional bytes */ |
| 1671 | gcss = 6*extra; |
| 1672 | c = (c & utf8_table3[extra]) << gcss; |
| 1673 | for (gcii = 1; gcii <= extra; gcii++) |
| 1674 | { |
| 1675 | gcss -= 6; |
| 1676 | c |= (pp[gcii] & 0x3f) << gcss; |
| 1677 | } |
| 1678 | } |
| 1679 | } |
| 1680 | else c = *((unsigned char *)pp); |
| 1681 | |
| 1682 | if (endlinetype == PCRE2_NEWLINE_ANYCRLF) switch (c) |
| 1683 | { |
| 1684 | case '\n': /* LF */ |
| 1685 | case '\r': /* CR */ |
| 1686 | return p; |
| 1687 | |
| 1688 | default: |
| 1689 | break; |
| 1690 | } |
| 1691 | |
| 1692 | else switch (c) |
| 1693 | { |
| 1694 | case '\n': /* LF */ |
| 1695 | case '\v': /* VT */ |
| 1696 | case '\f': /* FF */ |
| 1697 | case '\r': /* CR */ |
| 1698 | #ifndef EBCDIC |
| 1699 | case 0x85: /* Unicode NEL */ |
| 1700 | case 0x2028: /* Unicode LS */ |
| 1701 | case 0x2029: /* Unicode PS */ |
| 1702 | #endif /* Not EBCDIC */ |
| 1703 | return p; |
| 1704 | |
| 1705 | default: |
| 1706 | break; |
| 1707 | } |
| 1708 | |
| 1709 | p = pp; /* Back one character */ |
| 1710 | } /* End of loop for ANY case */ |
| 1711 | |
| 1712 | return startptr; /* Hit start of data */ |
| 1713 | } /* End of overall switch */ |
| 1714 | } |
| 1715 | |
| 1716 | |
| 1717 | |
| 1718 | /************************************************* |
| 1719 | * Output newline at end * |
| 1720 | *************************************************/ |
| 1721 | |
| 1722 | /* This function is called if the final line of a file has been written to |
| 1723 | stdout, but it does not have a terminating newline. |
| 1724 | |
| 1725 | Arguments: none |
| 1726 | Returns: nothing |
| 1727 | */ |
| 1728 | |
| 1729 | static void |
| 1730 | write_final_newline(void) |
| 1731 | { |
| 1732 | switch(endlinetype) |
| 1733 | { |
| 1734 | default: /* Just in case */ |
| 1735 | case PCRE2_NEWLINE_LF: |
| 1736 | case PCRE2_NEWLINE_ANY: |
| 1737 | case PCRE2_NEWLINE_ANYCRLF: |
| 1738 | fprintf(stdout, "\n"); |
| 1739 | break; |
| 1740 | |
| 1741 | case PCRE2_NEWLINE_CR: |
| 1742 | fprintf(stdout, "\r"); |
| 1743 | break; |
| 1744 | |
| 1745 | case PCRE2_NEWLINE_CRLF: |
| 1746 | fprintf(stdout, "\r\n"); |
| 1747 | break; |
| 1748 | |
| 1749 | case PCRE2_NEWLINE_NUL: |
| 1750 | fprintf(stdout, "%c", 0); |
| 1751 | break; |
| 1752 | } |
| 1753 | } |
| 1754 | |
| 1755 | |
| 1756 | /************************************************* |
| 1757 | * Print the previous "after" lines * |
| 1758 | *************************************************/ |
| 1759 | |
| 1760 | /* This is called if we are about to lose said lines because of buffer filling, |
| 1761 | and at the end of the file. The data in the line is written using fwrite() so |
| 1762 | that a binary zero does not terminate it. |
| 1763 | |
| 1764 | Arguments: |
| 1765 | lastmatchnumber the number of the last matching line, plus one |
| 1766 | lastmatchrestart where we restarted after the last match |
| 1767 | endptr end of available data |
| 1768 | printname filename for printing |
| 1769 | |
| 1770 | Returns: nothing |
| 1771 | */ |
| 1772 | |
| 1773 | static void |
| 1774 | do_after_lines(unsigned long int lastmatchnumber, char *lastmatchrestart, |
| 1775 | char *endptr, const char *printname) |
| 1776 | { |
| 1777 | if (after_context > 0 && lastmatchnumber > 0) |
| 1778 | { |
| 1779 | int count = 0; |
| 1780 | int ellength = 0; |
| 1781 | while (lastmatchrestart < endptr && count < after_context) |
| 1782 | { |
| 1783 | char *pp = end_of_line(lastmatchrestart, endptr, &ellength); |
| 1784 | if (ellength == 0 && pp == main_buffer + bufsize) break; |
| 1785 | if (printname != NULL) fprintf(stdout, "%s-", printname); |
| 1786 | if (number) fprintf(stdout, "%lu-", lastmatchnumber++); |
| 1787 | FWRITE_IGNORE(lastmatchrestart, 1, pp - lastmatchrestart, stdout); |
| 1788 | lastmatchrestart = pp; |
| 1789 | count++; |
| 1790 | } |
| 1791 | |
| 1792 | /* If we have printed any lines, arrange for a hyphen separator if anything |
| 1793 | else follows. Also, if the last line is the final line in the file and it had |
| 1794 | no newline, add one. */ |
| 1795 | |
| 1796 | if (count > 0) |
| 1797 | { |
| 1798 | hyphenpending = TRUE; |
| 1799 | if (ellength == 0 && lastmatchrestart >= endptr) |
| 1800 | write_final_newline(); |
| 1801 | } |
| 1802 | } |
| 1803 | } |
| 1804 | |
| 1805 | |
| 1806 | |
| 1807 | /************************************************* |
| 1808 | * Apply patterns to subject till one matches * |
| 1809 | *************************************************/ |
| 1810 | |
| 1811 | /* This function is called to run through all patterns, looking for a match. It |
| 1812 | is used multiple times for the same subject when colouring is enabled, in order |
| 1813 | to find all possible matches. |
| 1814 | |
| 1815 | Arguments: |
| 1816 | matchptr the start of the subject |
| 1817 | length the length of the subject to match |
| 1818 | options options for pcre_exec |
| 1819 | startoffset where to start matching |
| 1820 | mrc address of where to put the result of pcre2_match() |
| 1821 | |
| 1822 | Returns: TRUE if there was a match |
| 1823 | FALSE if there was no match |
| 1824 | invert if there was a non-fatal error |
| 1825 | */ |
| 1826 | |
| 1827 | static BOOL |
| 1828 | match_patterns(char *matchptr, PCRE2_SIZE length, unsigned int options, |
| 1829 | PCRE2_SIZE startoffset, int *mrc) |
| 1830 | { |
| 1831 | int i; |
| 1832 | PCRE2_SIZE slen = length; |
| 1833 | patstr *p = patterns; |
| 1834 | const char *msg = "this text:\n\n"; |
| 1835 | |
| 1836 | if (slen > 200) |
| 1837 | { |
| 1838 | slen = 200; |
| 1839 | msg = "text that starts:\n\n"; |
| 1840 | } |
| 1841 | |
| 1842 | for (i = 1; p != NULL; p = p->next, i++) |
| 1843 | { |
| 1844 | *mrc = pcre2_match(p->compiled, (PCRE2_SPTR)matchptr, (int)length, |
| 1845 | startoffset, options, match_data, match_context); |
| 1846 | if (*mrc >= 0) return TRUE; |
| 1847 | if (*mrc == PCRE2_ERROR_NOMATCH) continue; |
| 1848 | fprintf(stderr, "pcre2grep: pcre2_match() gave error %d while matching ", *mrc); |
| 1849 | if (patterns->next != NULL) fprintf(stderr, "pattern number %d to ", i); |
| 1850 | fprintf(stderr, "%s", msg); |
| 1851 | FWRITE_IGNORE(matchptr, 1, slen, stderr); /* In case binary zero included */ |
| 1852 | fprintf(stderr, "\n\n"); |
| 1853 | if (*mrc <= PCRE2_ERROR_UTF8_ERR1 && |
| 1854 | *mrc >= PCRE2_ERROR_UTF8_ERR21) |
| 1855 | { |
| 1856 | unsigned char mbuffer[256]; |
| 1857 | PCRE2_SIZE startchar = pcre2_get_startchar(match_data); |
| 1858 | (void)pcre2_get_error_message(*mrc, mbuffer, sizeof(mbuffer)); |
| 1859 | fprintf(stderr, "%s at offset %" SIZ_FORM "\n\n", mbuffer, |
| 1860 | SIZ_CAST startchar); |
| 1861 | } |
| 1862 | if (*mrc == PCRE2_ERROR_MATCHLIMIT || *mrc == PCRE2_ERROR_DEPTHLIMIT || |
| 1863 | *mrc == PCRE2_ERROR_HEAPLIMIT || *mrc == PCRE2_ERROR_JIT_STACKLIMIT) |
| 1864 | resource_error = TRUE; |
| 1865 | if (error_count++ > 20) |
| 1866 | { |
| 1867 | fprintf(stderr, "pcre2grep: Too many errors - abandoned.\n"); |
| 1868 | pcre2grep_exit(2); |
| 1869 | } |
| 1870 | return invert; /* No more matching; don't show the line again */ |
| 1871 | } |
| 1872 | |
| 1873 | return FALSE; /* No match, no errors */ |
| 1874 | } |
| 1875 | |
| 1876 | |
| 1877 | |
| 1878 | /************************************************* |
| 1879 | * Decode dollar escape sequence * |
| 1880 | *************************************************/ |
| 1881 | |
| 1882 | /* Called from various places to decode $ escapes in output strings. The escape |
| 1883 | sequences are as follows: |
| 1884 | |
| 1885 | $<digits> or ${<digits>} returns a capture number. However, if callout is TRUE, |
| 1886 | zero is never returned; '0' is substituted. |
| 1887 | |
| 1888 | $a returns bell. |
| 1889 | $b returns backspace. |
| 1890 | $e returns escape. |
| 1891 | $f returns form feed. |
| 1892 | $n returns newline. |
| 1893 | $r returns carriage return. |
| 1894 | $t returns tab. |
| 1895 | $v returns vertical tab. |
| 1896 | $o<digits> returns the character represented by the given octal |
| 1897 | number; up to three digits are processed. |
| 1898 | $o{<digits>} does the same, up to 7 digits, but gives an error for mode-invalid |
| 1899 | code points. |
| 1900 | $x<digits> returns the character represented by the given hexadecimal |
| 1901 | number; up to two digits are processed. |
| 1902 | $x{<digits} does the same, up to 6 digits, but gives an error for mode-invalid |
| 1903 | code points. |
| 1904 | Any other character is substituted by itself. E.g: $$ is replaced by a single |
| 1905 | dollar. |
| 1906 | |
| 1907 | Arguments: |
| 1908 | begin the start of the whole string |
| 1909 | string points to the $ |
| 1910 | callout TRUE if in a callout (inhibits error messages) |
| 1911 | value where to return a value |
| 1912 | last where to return pointer to the last used character |
| 1913 | |
| 1914 | Returns: DDE_ERROR after a syntax error |
| 1915 | DDE_CAPTURE if *value is a capture number |
| 1916 | DDE_CHAR if *value is a character code |
| 1917 | */ |
| 1918 | |
| 1919 | static int |
| 1920 | decode_dollar_escape(PCRE2_SPTR begin, PCRE2_SPTR string, BOOL callout, |
| 1921 | uint32_t *value, PCRE2_SPTR *last) |
| 1922 | { |
| 1923 | uint32_t c = 0; |
| 1924 | int base = 10; |
| 1925 | int dcount; |
| 1926 | int rc = DDE_CHAR; |
| 1927 | BOOL brace = FALSE; |
| 1928 | |
| 1929 | switch (*(++string)) |
| 1930 | { |
| 1931 | case 0: /* Syntax error: a character must be present after $. */ |
| 1932 | if (!callout) |
| 1933 | fprintf(stderr, "pcre2grep: Error in output text at offset %d: %s\n", |
| 1934 | (int)(string - begin), "no character after $"); |
| 1935 | *last = string; |
| 1936 | return DDE_ERROR; |
| 1937 | |
| 1938 | case '{': |
| 1939 | brace = TRUE; |
| 1940 | string++; |
| 1941 | if (!isdigit(*string)) /* Syntax error: a decimal number required. */ |
| 1942 | { |
| 1943 | if (!callout) |
| 1944 | fprintf(stderr, "pcre2grep: Error in output text at offset %d: %s\n", |
| 1945 | (int)(string - begin), "decimal number expected"); |
| 1946 | rc = DDE_ERROR; |
| 1947 | break; |
| 1948 | } |
| 1949 | |
| 1950 | /* Fall through */ |
| 1951 | |
| 1952 | /* The maximum capture number is 65535, so any number greater than that will |
| 1953 | always be an unknown capture number. We just stop incrementing, in order to |
| 1954 | avoid overflow. */ |
| 1955 | |
| 1956 | case '0': case '1': case '2': case '3': case '4': |
| 1957 | case '5': case '6': case '7': case '8': case '9': |
| 1958 | do |
| 1959 | { |
| 1960 | if (c <= 65535) c = c * 10 + (*string - '0'); |
| 1961 | string++; |
| 1962 | } |
| 1963 | while (*string >= '0' && *string <= '9'); |
| 1964 | string--; /* Point to last digit */ |
| 1965 | |
| 1966 | /* In a callout, capture number 0 is not available. No error can be given, |
| 1967 | so just return the character '0'. */ |
| 1968 | |
| 1969 | if (callout && c == 0) |
| 1970 | { |
| 1971 | *value = '0'; |
| 1972 | } |
| 1973 | else |
| 1974 | { |
| 1975 | *value = c; |
| 1976 | rc = DDE_CAPTURE; |
| 1977 | } |
| 1978 | break; |
| 1979 | |
| 1980 | /* Limit octal numbers to 3 digits without braces, or up to 7 with braces, |
| 1981 | for valid Unicode code points. */ |
| 1982 | |
| 1983 | case 'o': |
| 1984 | base = 8; |
| 1985 | string++; |
| 1986 | if (*string == '{') |
| 1987 | { |
| 1988 | brace = TRUE; |
| 1989 | string++; |
| 1990 | dcount = 7; |
| 1991 | } |
| 1992 | else dcount = 3; |
| 1993 | for (; dcount > 0; dcount--) |
| 1994 | { |
| 1995 | if (*string < '0' || *string > '7') break; |
| 1996 | c = c * 8 + (*string++ - '0'); |
| 1997 | } |
| 1998 | *value = c; |
| 1999 | string--; /* Point to last digit */ |
| 2000 | break; |
| 2001 | |
| 2002 | /* Limit hex numbers to 2 digits without braces, or up to 6 with braces, |
| 2003 | for valid Unicode code points. */ |
| 2004 | |
| 2005 | case 'x': |
| 2006 | base = 16; |
| 2007 | string++; |
| 2008 | if (*string == '{') |
| 2009 | { |
| 2010 | brace = TRUE; |
| 2011 | string++; |
| 2012 | dcount = 6; |
| 2013 | } |
| 2014 | else dcount = 2; |
| 2015 | for (; dcount > 0; dcount--) |
| 2016 | { |
| 2017 | if (!isxdigit(*string)) break; |
| 2018 | if (*string >= '0' && *string <= '9') |
| 2019 | c = c *16 + *string++ - '0'; |
| 2020 | else |
| 2021 | c = c * 16 + (*string++ | 0x20) - 'a' + 10; |
| 2022 | } |
| 2023 | *value = c; |
| 2024 | string--; /* Point to last digit */ |
| 2025 | break; |
| 2026 | |
| 2027 | case 'a': *value = '\a'; break; |
| 2028 | case 'b': *value = '\b'; break; |
| 2029 | #ifndef EBCDIC |
| 2030 | case 'e': *value = '\033'; break; |
| 2031 | #else |
| 2032 | case 'e': *value = '\047'; break; |
| 2033 | #endif |
| 2034 | case 'f': *value = '\f'; break; |
| 2035 | case 'n': *value = STDOUT_NL_CODE; break; |
| 2036 | case 'r': *value = '\r'; break; |
| 2037 | case 't': *value = '\t'; break; |
| 2038 | case 'v': *value = '\v'; break; |
| 2039 | |
| 2040 | default: *value = *string; break; |
| 2041 | } |
| 2042 | |
| 2043 | if (brace) |
| 2044 | { |
| 2045 | c = string[1]; |
| 2046 | if (c != '}') |
| 2047 | { |
| 2048 | rc = DDE_ERROR; |
| 2049 | if (!callout) |
| 2050 | { |
| 2051 | if ((base == 8 && c >= '0' && c <= '7') || |
| 2052 | (base == 16 && isxdigit(c))) |
| 2053 | { |
| 2054 | fprintf(stderr, "pcre2grep: Error in output text at offset %d: " |
| 2055 | "too many %s digits\n", (int)(string - begin), |
| 2056 | (base == 8)? "octal" : "hex"); |
| 2057 | } |
| 2058 | else |
| 2059 | { |
| 2060 | fprintf(stderr, "pcre2grep: Error in output text at offset %d: %s\n", |
| 2061 | (int)(string - begin), "missing closing brace"); |
| 2062 | } |
| 2063 | } |
| 2064 | } |
| 2065 | else string++; |
| 2066 | } |
| 2067 | |
| 2068 | /* Check maximum code point values, but take note of STDOUT_NL_CODE. */ |
| 2069 | |
| 2070 | if (rc == DDE_CHAR && *value != STDOUT_NL_CODE) |
| 2071 | { |
| 2072 | uint32_t max = utf? 0x0010ffffu : 0xffu; |
| 2073 | if (*value > max) |
| 2074 | { |
| 2075 | if (!callout) |
| 2076 | fprintf(stderr, "pcre2grep: Error in output text at offset %d: " |
| 2077 | "code point greater than 0x%x is invalid\n", (int)(string - begin), max); |
| 2078 | rc = DDE_ERROR; |
| 2079 | } |
| 2080 | } |
| 2081 | |
| 2082 | *last = string; |
| 2083 | return rc; |
| 2084 | } |
| 2085 | |
| 2086 | |
| 2087 | |
| 2088 | /************************************************* |
| 2089 | * Check output text for errors * |
| 2090 | *************************************************/ |
| 2091 | |
| 2092 | /* Called early, to get errors before doing anything for -O text; also called |
| 2093 | from callouts to check before outputting. |
| 2094 | |
| 2095 | Arguments: |
| 2096 | string an --output text string |
| 2097 | callout TRUE if in a callout (stops printing errors) |
| 2098 | |
| 2099 | Returns: TRUE if OK, FALSE on error |
| 2100 | */ |
| 2101 | |
| 2102 | static BOOL |
| 2103 | syntax_check_output_text(PCRE2_SPTR string, BOOL callout) |
| 2104 | { |
| 2105 | uint32_t value; |
| 2106 | PCRE2_SPTR begin = string; |
| 2107 | |
| 2108 | for (; *string != 0; string++) |
| 2109 | { |
| 2110 | if (*string == '$' && |
| 2111 | decode_dollar_escape(begin, string, callout, &value, &string) == DDE_ERROR) |
| 2112 | return FALSE; |
| 2113 | } |
| 2114 | |
| 2115 | return TRUE; |
| 2116 | } |
| 2117 | |
| 2118 | |
| 2119 | /************************************************* |
| 2120 | * Display output text * |
| 2121 | *************************************************/ |
| 2122 | |
| 2123 | /* Display the output text, which is assumed to have already been syntax |
| 2124 | checked. Output may contain escape sequences started by the dollar sign. |
| 2125 | |
| 2126 | Arguments: |
| 2127 | string: the output text |
| 2128 | callout: TRUE for the builtin callout, FALSE for --output |
| 2129 | subject the start of the subject |
| 2130 | ovector: capture offsets |
| 2131 | capture_top: number of captures |
| 2132 | |
| 2133 | Returns: TRUE if something was output, other than newline |
| 2134 | FALSE if nothing was output, or newline was last output |
| 2135 | */ |
| 2136 | |
| 2137 | static BOOL |
| 2138 | display_output_text(PCRE2_SPTR string, BOOL callout, PCRE2_SPTR subject, |
| 2139 | PCRE2_SIZE *ovector, PCRE2_SIZE capture_top) |
| 2140 | { |
| 2141 | uint32_t value; |
| 2142 | BOOL printed = FALSE; |
| 2143 | PCRE2_SPTR begin = string; |
| 2144 | |
| 2145 | for (; *string != 0; string++) |
| 2146 | { |
| 2147 | if (*string == '$') |
| 2148 | { |
| 2149 | switch(decode_dollar_escape(begin, string, callout, &value, &string)) |
| 2150 | { |
| 2151 | case DDE_CHAR: |
| 2152 | if (value == STDOUT_NL_CODE) |
| 2153 | { |
| 2154 | fprintf(stdout, STDOUT_NL); |
| 2155 | printed = FALSE; |
| 2156 | continue; |
| 2157 | } |
| 2158 | break; /* Will print value */ |
| 2159 | |
| 2160 | case DDE_CAPTURE: |
| 2161 | if (value < capture_top) |
| 2162 | { |
| 2163 | PCRE2_SIZE capturesize; |
| 2164 | value *= 2; |
| 2165 | capturesize = ovector[value + 1] - ovector[value]; |
| 2166 | if (capturesize > 0) |
| 2167 | { |
| 2168 | print_match(subject + ovector[value], capturesize); |
| 2169 | printed = TRUE; |
| 2170 | } |
| 2171 | } |
| 2172 | continue; |
| 2173 | |
| 2174 | default: /* Should not occur */ |
| 2175 | break; |
| 2176 | } |
| 2177 | } |
| 2178 | |
| 2179 | else value = *string; /* Not a $ escape */ |
| 2180 | |
| 2181 | if (utf && value <= 127) fprintf(stdout, "%c", *string); else |
| 2182 | { |
| 2183 | int i; |
| 2184 | int n = ord2utf8(value); |
| 2185 | for (i = 0; i < n; i++) fputc(utf8_buffer[i], stdout); |
| 2186 | } |
| 2187 | |
| 2188 | printed = TRUE; |
| 2189 | } |
| 2190 | |
| 2191 | return printed; |
| 2192 | } |
| 2193 | |
| 2194 | |
| 2195 | #ifdef SUPPORT_PCRE2GREP_CALLOUT |
| 2196 | |
| 2197 | /************************************************* |
| 2198 | * Parse and execute callout scripts * |
| 2199 | *************************************************/ |
| 2200 | |
| 2201 | /* If SUPPORT_PCRE2GREP_CALLOUT_FORK is defined, this function parses a callout |
| 2202 | string block and executes the program specified by the string. The string is a |
| 2203 | list of substrings separated by pipe characters. The first substring represents |
| 2204 | the executable name, and the following substrings specify the arguments: |
| 2205 | |
| 2206 | program_name|param1|param2|... |
| 2207 | |
| 2208 | Any substring (including the program name) can contain escape sequences |
| 2209 | started by the dollar character. The escape sequences are substituted as |
| 2210 | follows: |
| 2211 | |
| 2212 | $<digits> or ${<digits>} is replaced by the captured substring of the given |
| 2213 | decimal number, which must be greater than zero. If the number is greater |
| 2214 | than the number of capturing substrings, or if the capture is unset, the |
| 2215 | replacement is empty. |
| 2216 | |
| 2217 | Any other character is substituted by itself. E.g: $$ is replaced by a single |
| 2218 | dollar or $| replaced by a pipe character. |
| 2219 | |
| 2220 | Alternatively, if string starts with pipe, the remainder is taken as an output |
| 2221 | string, same as --output. This is the only form that is supported if |
| 2222 | SUPPORT_PCRE2GREP_FORK is not defined. In this case, --om-separator is used to |
| 2223 | separate each callout, defaulting to newline. |
| 2224 | |
| 2225 | Example: |
| 2226 | |
| 2227 | echo -e "abcde\n12345" | pcre2grep \ |
| 2228 | '(.)(..(.))(?C"/bin/echo|Arg1: [$1] [$2] [$3]|Arg2: $|${1}$| ($4)")()' - |
| 2229 | |
| 2230 | Output: |
| 2231 | |
| 2232 | Arg1: [a] [bcd] [d] Arg2: |a| () |
| 2233 | abcde |
| 2234 | Arg1: [1] [234] [4] Arg2: |1| () |
| 2235 | 12345 |
| 2236 | |
| 2237 | Arguments: |
| 2238 | blockptr the callout block |
| 2239 | |
| 2240 | Returns: currently it always returns with 0 |
| 2241 | */ |
| 2242 | |
| 2243 | static int |
| 2244 | pcre2grep_callout(pcre2_callout_block *calloutptr, void *unused) |
| 2245 | { |
| 2246 | PCRE2_SIZE length = calloutptr->callout_string_length; |
| 2247 | PCRE2_SPTR string = calloutptr->callout_string; |
| 2248 | PCRE2_SPTR subject = calloutptr->subject; |
| 2249 | PCRE2_SIZE *ovector = calloutptr->offset_vector; |
| 2250 | PCRE2_SIZE capture_top = calloutptr->capture_top; |
| 2251 | |
| 2252 | #ifdef SUPPORT_PCRE2GREP_CALLOUT_FORK |
| 2253 | PCRE2_SIZE argsvectorlen = 2; |
| 2254 | PCRE2_SIZE argslen = 1; |
| 2255 | char *args; |
| 2256 | char *argsptr; |
| 2257 | char **argsvector; |
| 2258 | char **argsvectorptr; |
| 2259 | #ifndef WIN32 |
| 2260 | pid_t pid; |
| 2261 | #endif |
| 2262 | int result = 0; |
| 2263 | #endif /* SUPPORT_PCRE2GREP_CALLOUT_FORK */ |
| 2264 | |
| 2265 | (void)unused; /* Avoid compiler warning */ |
| 2266 | |
| 2267 | /* Only callouts with strings are supported. */ |
| 2268 | |
| 2269 | if (string == NULL || length == 0) return 0; |
| 2270 | |
| 2271 | /* If there's no command, output the remainder directly. */ |
| 2272 | |
| 2273 | if (*string == '|') |
| 2274 | { |
| 2275 | string++; |
| 2276 | if (!syntax_check_output_text(string, TRUE)) return 0; |
| 2277 | (void)display_output_text(string, TRUE, subject, ovector, capture_top); |
| 2278 | return 0; |
| 2279 | } |
| 2280 | |
| 2281 | #ifndef SUPPORT_PCRE2GREP_CALLOUT_FORK |
| 2282 | return 0; |
| 2283 | #else |
| 2284 | |
| 2285 | /* Checking syntax and compute the number of string fragments. Callout strings |
| 2286 | are silently ignored in the event of a syntax error. */ |
| 2287 | |
| 2288 | while (length > 0) |
| 2289 | { |
| 2290 | if (*string == '|') |
| 2291 | { |
| 2292 | argsvectorlen++; |
| 2293 | if (argsvectorlen > 10000) return 0; /* Too many args */ |
| 2294 | } |
| 2295 | |
| 2296 | else if (*string == '$') |
| 2297 | { |
| 2298 | uint32_t value; |
| 2299 | PCRE2_SPTR begin = string; |
| 2300 | |
| 2301 | switch (decode_dollar_escape(begin, string, TRUE, &value, &string)) |
| 2302 | { |
| 2303 | case DDE_CAPTURE: |
| 2304 | if (value < capture_top) |
| 2305 | { |
| 2306 | value *= 2; |
| 2307 | argslen += ovector[value + 1] - ovector[value]; |
| 2308 | } |
| 2309 | argslen--; /* Negate the effect of argslen++ below. */ |
| 2310 | break; |
| 2311 | |
| 2312 | case DDE_CHAR: |
| 2313 | if (value == STDOUT_NL_CODE) argslen += STDOUT_NL_LEN - 1; |
| 2314 | else if (utf && value > 127) argslen += ord2utf8(value) - 1; |
| 2315 | break; |
| 2316 | |
| 2317 | default: /* Should not occur */ |
| 2318 | case DDE_ERROR: |
| 2319 | return 0; |
| 2320 | } |
| 2321 | |
| 2322 | length -= (string - begin); |
| 2323 | } |
| 2324 | |
| 2325 | string++; |
| 2326 | length--; |
| 2327 | argslen++; |
| 2328 | } |
| 2329 | |
| 2330 | /* Get memory for the argument vector and its strings. */ |
| 2331 | |
| 2332 | args = (char*)malloc(argslen); |
| 2333 | if (args == NULL) return 0; |
| 2334 | |
| 2335 | argsvector = (char**)malloc(argsvectorlen * sizeof(char*)); |
| 2336 | if (argsvector == NULL) |
| 2337 | { |
| 2338 | free(args); |
| 2339 | return 0; |
| 2340 | } |
| 2341 | |
| 2342 | /* Now reprocess the string and set up the arguments. */ |
| 2343 | |
| 2344 | argsptr = args; |
| 2345 | argsvectorptr = argsvector; |
| 2346 | *argsvectorptr++ = argsptr; |
| 2347 | |
| 2348 | length = calloutptr->callout_string_length; |
| 2349 | string = calloutptr->callout_string; |
| 2350 | |
| 2351 | while (length > 0) |
| 2352 | { |
| 2353 | if (*string == '|') |
| 2354 | { |
| 2355 | *argsptr++ = '\0'; |
| 2356 | *argsvectorptr++ = argsptr; |
| 2357 | } |
| 2358 | |
| 2359 | else if (*string == '$') |
| 2360 | { |
| 2361 | uint32_t value; |
| 2362 | PCRE2_SPTR begin = string; |
| 2363 | |
| 2364 | switch (decode_dollar_escape(begin, string, TRUE, &value, &string)) |
| 2365 | { |
| 2366 | case DDE_CAPTURE: |
| 2367 | if (value < capture_top) |
| 2368 | { |
| 2369 | PCRE2_SIZE capturesize; |
| 2370 | value *= 2; |
| 2371 | capturesize = ovector[value + 1] - ovector[value]; |
| 2372 | memcpy(argsptr, subject + ovector[value], capturesize); |
| 2373 | argsptr += capturesize; |
| 2374 | } |
| 2375 | break; |
| 2376 | |
| 2377 | case DDE_CHAR: |
| 2378 | if (value == STDOUT_NL_CODE) |
| 2379 | { |
| 2380 | memcpy(argsptr, STDOUT_NL, STDOUT_NL_LEN); |
| 2381 | argsptr += STDOUT_NL_LEN; |
| 2382 | } |
| 2383 | else if (utf && value > 127) |
| 2384 | { |
| 2385 | int n = ord2utf8(value); |
| 2386 | memcpy(argsptr, utf8_buffer, n); |
| 2387 | argsptr += n; |
| 2388 | } |
| 2389 | else |
| 2390 | { |
| 2391 | *argsptr++ = value; |
| 2392 | } |
| 2393 | break; |
| 2394 | |
| 2395 | default: /* Even though this should not occur, the string having */ |
| 2396 | case DDE_ERROR: /* been checked above, we need to include the free() */ |
| 2397 | free(args); /* calls so that source checkers do not complain. */ |
| 2398 | free(argsvector); |
| 2399 | return 0; |
| 2400 | } |
| 2401 | |
| 2402 | length -= (string - begin); |
| 2403 | } |
| 2404 | |
| 2405 | else *argsptr++ = *string; |
| 2406 | |
| 2407 | /* Advance along the string */ |
| 2408 | |
| 2409 | string++; |
| 2410 | length--; |
| 2411 | } |
| 2412 | |
| 2413 | *argsptr++ = '\0'; |
| 2414 | *argsvectorptr = NULL; |
| 2415 | |
| 2416 | /* Running an external command is system-dependent. Handle Windows and VMS as |
| 2417 | necessary, otherwise assume fork(). */ |
| 2418 | |
| 2419 | #ifdef WIN32 |
| 2420 | result = _spawnvp(_P_WAIT, argsvector[0], (const char * const *)argsvector); |
| 2421 | |
| 2422 | #elif defined __VMS |
| 2423 | { |
| 2424 | char cmdbuf[500]; |
| 2425 | short i = 0; |
| 2426 | int flags = CLI$M_NOCLISYM|CLI$M_NOLOGNAM|CLI$M_NOKEYPAD, status, retstat; |
| 2427 | $DESCRIPTOR(cmd, cmdbuf); |
| 2428 | |
| 2429 | cmdbuf[0] = 0; |
| 2430 | while (argsvector[i]) |
| 2431 | { |
| 2432 | strcat(cmdbuf, argsvector[i]); |
| 2433 | strcat(cmdbuf, " "); |
| 2434 | i++; |
| 2435 | } |
| 2436 | cmd.dsc$w_length = strlen(cmdbuf) - 1; |
| 2437 | status = lib$spawn(&cmd, 0,0, &flags, 0,0, &retstat); |
| 2438 | if (!(status & 1)) result = 0; |
| 2439 | else result = retstat & 1 ? 0 : 1; |
| 2440 | } |
| 2441 | |
| 2442 | #else /* Neither Windows nor VMS */ |
| 2443 | pid = fork(); |
| 2444 | if (pid == 0) |
| 2445 | { |
| 2446 | (void)execv(argsvector[0], argsvector); |
| 2447 | /* Control gets here if there is an error, e.g. a non-existent program */ |
| 2448 | exit(1); |
| 2449 | } |
| 2450 | else if (pid > 0) |
| 2451 | (void)waitpid(pid, &result, 0); |
| 2452 | #endif /* End Windows/VMS/other handling */ |
| 2453 | |
| 2454 | free(args); |
| 2455 | free(argsvector); |
| 2456 | |
| 2457 | /* Currently negative return values are not supported, only zero (match |
| 2458 | continues) or non-zero (match fails). */ |
| 2459 | |
| 2460 | return result != 0; |
| 2461 | #endif /* SUPPORT_PCRE2GREP_CALLOUT_FORK */ |
| 2462 | } |
| 2463 | #endif /* SUPPORT_PCRE2GREP_CALLOUT */ |
| 2464 | |
| 2465 | |
| 2466 | |
| 2467 | /************************************************* |
| 2468 | * Read a portion of the file into buffer * |
| 2469 | *************************************************/ |
| 2470 | |
| 2471 | static int |
| 2472 | fill_buffer(void *handle, int frtype, char *buffer, int length, |
| 2473 | BOOL input_line_buffered) |
| 2474 | { |
| 2475 | (void)frtype; /* Avoid warning when not used */ |
| 2476 | |
| 2477 | #ifdef SUPPORT_LIBZ |
| 2478 | if (frtype == FR_LIBZ) |
| 2479 | return gzread((gzFile)handle, buffer, length); |
| 2480 | else |
| 2481 | #endif |
| 2482 | |
| 2483 | #ifdef SUPPORT_LIBBZ2 |
| 2484 | if (frtype == FR_LIBBZ2) |
| 2485 | return BZ2_bzread((BZFILE *)handle, buffer, length); |
| 2486 | else |
| 2487 | #endif |
| 2488 | |
| 2489 | return (input_line_buffered ? |
| 2490 | read_one_line(buffer, length, (FILE *)handle) : |
| 2491 | fread(buffer, 1, length, (FILE *)handle)); |
| 2492 | } |
| 2493 | |
| 2494 | |
| 2495 | |
| 2496 | /************************************************* |
| 2497 | * Grep an individual file * |
| 2498 | *************************************************/ |
| 2499 | |
| 2500 | /* This is called from grep_or_recurse() below. It uses a buffer that is three |
| 2501 | times the value of bufthird. The matching point is never allowed to stray into |
| 2502 | the top third of the buffer, thus keeping more of the file available for |
| 2503 | context printing or for multiline scanning. For large files, the pointer will |
| 2504 | be in the middle third most of the time, so the bottom third is available for |
| 2505 | "before" context printing. |
| 2506 | |
| 2507 | Arguments: |
| 2508 | handle the fopened FILE stream for a normal file |
| 2509 | the gzFile pointer when reading is via libz |
| 2510 | the BZFILE pointer when reading is via libbz2 |
| 2511 | frtype FR_PLAIN, FR_LIBZ, or FR_LIBBZ2 |
| 2512 | filename the file name or NULL (for errors) |
| 2513 | printname the file name if it is to be printed for each match |
| 2514 | or NULL if the file name is not to be printed |
| 2515 | it cannot be NULL if filenames[_nomatch]_only is set |
| 2516 | |
| 2517 | Returns: 0 if there was at least one match |
| 2518 | 1 otherwise (no matches) |
| 2519 | 2 if an overlong line is encountered |
| 2520 | 3 if there is a read error on a .bz2 file |
| 2521 | */ |
| 2522 | |
| 2523 | static int |
| 2524 | pcre2grep(void *handle, int frtype, const char *filename, const char *printname) |
| 2525 | { |
| 2526 | int rc = 1; |
| 2527 | int filepos = 0; |
| 2528 | unsigned long int linenumber = 1; |
| 2529 | unsigned long int lastmatchnumber = 0; |
| 2530 | unsigned long int count = 0; |
| 2531 | long int count_matched_lines = 0; |
| 2532 | char *lastmatchrestart = main_buffer; |
| 2533 | char *ptr = main_buffer; |
| 2534 | char *endptr; |
| 2535 | PCRE2_SIZE bufflength; |
| 2536 | BOOL binary = FALSE; |
| 2537 | BOOL endhyphenpending = FALSE; |
| 2538 | BOOL lines_printed = FALSE; |
| 2539 | BOOL input_line_buffered = line_buffered; |
| 2540 | FILE *in = NULL; /* Ensure initialized */ |
| 2541 | |
| 2542 | /* Do the first read into the start of the buffer and set up the pointer to end |
| 2543 | of what we have. In the case of libz, a non-zipped .gz file will be read as a |
| 2544 | plain file. However, if a .bz2 file isn't actually bzipped, the first read will |
| 2545 | fail. */ |
| 2546 | |
| 2547 | if (frtype != FR_LIBZ && frtype != FR_LIBBZ2) |
| 2548 | { |
| 2549 | in = (FILE *)handle; |
| 2550 | if (is_file_tty(in)) input_line_buffered = TRUE; |
| 2551 | } |
| 2552 | else input_line_buffered = FALSE; |
| 2553 | |
| 2554 | bufflength = fill_buffer(handle, frtype, main_buffer, bufsize, |
| 2555 | input_line_buffered); |
| 2556 | |
| 2557 | #ifdef SUPPORT_LIBBZ2 |
| 2558 | if (frtype == FR_LIBBZ2 && (int)bufflength < 0) return 2; /* Gotcha: bufflength is PCRE2_SIZE */ |
| 2559 | #endif |
| 2560 | |
| 2561 | endptr = main_buffer + bufflength; |
| 2562 | |
| 2563 | /* Unless binary-files=text, see if we have a binary file. This uses the same |
| 2564 | rule as GNU grep, namely, a search for a binary zero byte near the start of the |
| 2565 | file. However, when the newline convention is binary zero, we can't do this. */ |
| 2566 | |
| 2567 | if (binary_files != BIN_TEXT) |
| 2568 | { |
| 2569 | if (endlinetype != PCRE2_NEWLINE_NUL) |
| 2570 | binary = memchr(main_buffer, 0, (bufflength > 1024)? 1024 : bufflength) |
| 2571 | != NULL; |
| 2572 | if (binary && binary_files == BIN_NOMATCH) return 1; |
| 2573 | } |
| 2574 | |
| 2575 | /* Loop while the current pointer is not at the end of the file. For large |
| 2576 | files, endptr will be at the end of the buffer when we are in the middle of the |
| 2577 | file, but ptr will never get there, because as soon as it gets over 2/3 of the |
| 2578 | way, the buffer is shifted left and re-filled. */ |
| 2579 | |
| 2580 | while (ptr < endptr) |
| 2581 | { |
| 2582 | int endlinelength; |
| 2583 | int mrc = 0; |
| 2584 | unsigned int options = 0; |
| 2585 | BOOL match; |
| 2586 | BOOL line_matched = FALSE; |
| 2587 | char *t = ptr; |
| 2588 | PCRE2_SIZE length, linelength; |
| 2589 | PCRE2_SIZE startoffset = 0; |
| 2590 | |
| 2591 | /* If the -m option set a limit for the number of matched or non-matched |
| 2592 | lines, check it here. A limit of zero means that no matching is ever done. |
| 2593 | For stdin from a file, set the file position. */ |
| 2594 | |
| 2595 | if (count_limit >= 0 && count_matched_lines >= count_limit) |
| 2596 | { |
| 2597 | if (frtype == FR_PLAIN && filename == stdin_name && !is_file_tty(handle)) |
| 2598 | (void)fseek(handle, (long int)filepos, SEEK_SET); |
| 2599 | rc = (count_limit == 0)? 1 : 0; |
| 2600 | break; |
| 2601 | } |
| 2602 | |
| 2603 | /* At this point, ptr is at the start of a line. We need to find the length |
| 2604 | of the subject string to pass to pcre2_match(). In multiline mode, it is the |
| 2605 | length remainder of the data in the buffer. Otherwise, it is the length of |
| 2606 | the next line, excluding the terminating newline. After matching, we always |
| 2607 | advance by the length of the next line. In multiline mode the PCRE2_FIRSTLINE |
| 2608 | option is used for compiling, so that any match is constrained to be in the |
| 2609 | first line. */ |
| 2610 | |
| 2611 | t = end_of_line(t, endptr, &endlinelength); |
| 2612 | linelength = t - ptr - endlinelength; |
| 2613 | length = multiline? (PCRE2_SIZE)(endptr - ptr) : linelength; |
| 2614 | |
| 2615 | /* Check to see if the line we are looking at extends right to the very end |
| 2616 | of the buffer without a line terminator. This means the line is too long to |
| 2617 | handle at the current buffer size. Until the buffer reaches its maximum size, |
| 2618 | try doubling it and reading more data. */ |
| 2619 | |
| 2620 | if (endlinelength == 0 && t == main_buffer + bufsize) |
| 2621 | { |
| 2622 | if (bufthird < max_bufthird) |
| 2623 | { |
| 2624 | char *new_buffer; |
| 2625 | int new_bufthird = 2*bufthird; |
| 2626 | |
| 2627 | if (new_bufthird > max_bufthird) new_bufthird = max_bufthird; |
| 2628 | new_buffer = (char *)malloc(3*new_bufthird); |
| 2629 | |
| 2630 | if (new_buffer == NULL) |
| 2631 | { |
| 2632 | fprintf(stderr, |
| 2633 | "pcre2grep: line %lu%s%s is too long for the internal buffer\n" |
| 2634 | "pcre2grep: not enough memory to increase the buffer size to %d\n", |
| 2635 | linenumber, |
| 2636 | (filename == NULL)? "" : " of file ", |
| 2637 | (filename == NULL)? "" : filename, |
| 2638 | new_bufthird); |
| 2639 | return 2; |
| 2640 | } |
| 2641 | |
| 2642 | /* Copy the data and adjust pointers to the new buffer location. */ |
| 2643 | |
| 2644 | memcpy(new_buffer, main_buffer, bufsize); |
| 2645 | bufthird = new_bufthird; |
| 2646 | bufsize = 3*bufthird; |
| 2647 | ptr = new_buffer + (ptr - main_buffer); |
| 2648 | lastmatchrestart = new_buffer + (lastmatchrestart - main_buffer); |
| 2649 | free(main_buffer); |
| 2650 | main_buffer = new_buffer; |
| 2651 | |
| 2652 | /* Read more data into the buffer and then try to find the line ending |
| 2653 | again. */ |
| 2654 | |
| 2655 | bufflength += fill_buffer(handle, frtype, main_buffer + bufflength, |
| 2656 | bufsize - bufflength, input_line_buffered); |
| 2657 | endptr = main_buffer + bufflength; |
| 2658 | continue; |
| 2659 | } |
| 2660 | else |
| 2661 | { |
| 2662 | fprintf(stderr, |
| 2663 | "pcre2grep: line %lu%s%s is too long for the internal buffer\n" |
| 2664 | "pcre2grep: the maximum buffer size is %d\n" |
| 2665 | "pcre2grep: use the --max-buffer-size option to change it\n", |
| 2666 | linenumber, |
| 2667 | (filename == NULL)? "" : " of file ", |
| 2668 | (filename == NULL)? "" : filename, |
| 2669 | bufthird); |
| 2670 | return 2; |
| 2671 | } |
| 2672 | } |
| 2673 | |
| 2674 | /* Extra processing for Jeffrey Friedl's debugging. */ |
| 2675 | |
| 2676 | #ifdef JFRIEDL_DEBUG |
| 2677 | if (jfriedl_XT || jfriedl_XR) |
| 2678 | { |
| 2679 | # include <sys/time.h> |
| 2680 | # include <time.h> |
| 2681 | struct timeval start_time, end_time; |
| 2682 | struct timezone dummy; |
| 2683 | int i; |
| 2684 | |
| 2685 | if (jfriedl_XT) |
| 2686 | { |
| 2687 | unsigned long newlen = length * jfriedl_XT + strlen(jfriedl_prefix) + strlen(jfriedl_postfix); |
| 2688 | const char *orig = ptr; |
| 2689 | ptr = malloc(newlen + 1); |
| 2690 | if (!ptr) { |
| 2691 | printf("out of memory"); |
| 2692 | pcre2grep_exit(2); |
| 2693 | } |
| 2694 | endptr = ptr; |
| 2695 | strcpy(endptr, jfriedl_prefix); endptr += strlen(jfriedl_prefix); |
| 2696 | for (i = 0; i < jfriedl_XT; i++) { |
| 2697 | strncpy(endptr, orig, length); |
| 2698 | endptr += length; |
| 2699 | } |
| 2700 | strcpy(endptr, jfriedl_postfix); endptr += strlen(jfriedl_postfix); |
| 2701 | length = newlen; |
| 2702 | } |
| 2703 | |
| 2704 | if (gettimeofday(&start_time, &dummy) != 0) |
| 2705 | perror("bad gettimeofday"); |
| 2706 | |
| 2707 | |
| 2708 | for (i = 0; i < jfriedl_XR; i++) |
| 2709 | match = (pcre_exec(patterns->compiled, patterns->hint, ptr, length, 0, |
| 2710 | PCRE2_NOTEMPTY, offsets, offset_size) >= 0); |
| 2711 | |
| 2712 | if (gettimeofday(&end_time, &dummy) != 0) |
| 2713 | perror("bad gettimeofday"); |
| 2714 | |
| 2715 | double delta = ((end_time.tv_sec + (end_time.tv_usec / 1000000.0)) |
| 2716 | - |
| 2717 | (start_time.tv_sec + (start_time.tv_usec / 1000000.0))); |
| 2718 | |
| 2719 | printf("%s TIMER[%.4f]\n", match ? "MATCH" : "FAIL", delta); |
| 2720 | return 0; |
| 2721 | } |
| 2722 | #endif |
| 2723 | |
| 2724 | /* We come back here after a match when only_matching_count is non-zero, in |
| 2725 | order to find any further matches in the same line. This applies to |
| 2726 | --only-matching, --file-offsets, and --line-offsets. */ |
| 2727 | |
| 2728 | ONLY_MATCHING_RESTART: |
| 2729 | |
| 2730 | /* Run through all the patterns until one matches or there is an error other |
| 2731 | than NOMATCH. This code is in a subroutine so that it can be re-used for |
| 2732 | finding subsequent matches when colouring matched lines. After finding one |
| 2733 | match, set PCRE2_NOTEMPTY to disable any further matches of null strings in |
| 2734 | this line. */ |
| 2735 | |
| 2736 | match = match_patterns(ptr, length, options, startoffset, &mrc); |
| 2737 | options = PCRE2_NOTEMPTY; |
| 2738 | |
| 2739 | /* If it's a match or a not-match (as required), do what's wanted. NOTE: Use |
| 2740 | only FWRITE_IGNORE() - which is just a packaged fwrite() that ignores its |
| 2741 | return code - to output data lines, so that binary zeroes are treated as just |
| 2742 | another data character. */ |
| 2743 | |
| 2744 | if (match != invert) |
| 2745 | { |
| 2746 | BOOL hyphenprinted = FALSE; |
| 2747 | |
| 2748 | /* We've failed if we want a file that doesn't have any matches. */ |
| 2749 | |
| 2750 | if (filenames == FN_NOMATCH_ONLY) return 1; |
| 2751 | |
| 2752 | /* Remember that this line matched (for counting matched lines) */ |
| 2753 | |
| 2754 | line_matched = TRUE; |
| 2755 | |
| 2756 | /* If all we want is a yes/no answer, we can return immediately. */ |
| 2757 | |
| 2758 | if (quiet) return 0; |
| 2759 | |
| 2760 | /* Just count if just counting is wanted. */ |
| 2761 | |
| 2762 | else if (count_only || show_total_count) count++; |
| 2763 | |
| 2764 | /* When handling a binary file and binary-files==binary, the "binary" |
| 2765 | variable will be set true (it's false in all other cases). In this |
| 2766 | situation we just want to output the file name. No need to scan further. */ |
| 2767 | |
| 2768 | else if (binary) |
| 2769 | { |
| 2770 | fprintf(stdout, "Binary file %s matches" STDOUT_NL, filename); |
| 2771 | return 0; |
| 2772 | } |
| 2773 | |
| 2774 | /* Likewise, if all we want is a file name, there is no need to scan any |
| 2775 | more lines in the file. */ |
| 2776 | |
| 2777 | else if (filenames == FN_MATCH_ONLY) |
| 2778 | { |
| 2779 | fprintf(stdout, "%s" STDOUT_NL, printname); |
| 2780 | return 0; |
| 2781 | } |
| 2782 | |
| 2783 | /* The --only-matching option prints just the substring that matched, |
| 2784 | and/or one or more captured portions of it, as long as these strings are |
| 2785 | not empty. The --file-offsets and --line-offsets options output offsets for |
| 2786 | the matching substring (all three set only_matching_count non-zero). None |
| 2787 | of these mutually exclusive options prints any context. Afterwards, adjust |
| 2788 | the start and then jump back to look for further matches in the same line. |
| 2789 | If we are in invert mode, however, nothing is printed and we do not restart |
| 2790 | - this could still be useful because the return code is set. */ |
| 2791 | |
| 2792 | else if (only_matching_count != 0) |
| 2793 | { |
| 2794 | if (!invert) |
| 2795 | { |
| 2796 | PCRE2_SIZE oldstartoffset; |
| 2797 | |
| 2798 | if (printname != NULL) fprintf(stdout, "%s:", printname); |
| 2799 | if (number) fprintf(stdout, "%lu:", linenumber); |
| 2800 | |
| 2801 | /* Handle --line-offsets */ |
| 2802 | |
| 2803 | if (line_offsets) |
| 2804 | fprintf(stdout, "%d,%d" STDOUT_NL, (int)(ptr + offsets[0] - ptr), |
| 2805 | (int)(offsets[1] - offsets[0])); |
| 2806 | |
| 2807 | /* Handle --file-offsets */ |
| 2808 | |
| 2809 | else if (file_offsets) |
| 2810 | fprintf(stdout, "%d,%d" STDOUT_NL, |
| 2811 | (int)(filepos + ptr + offsets[0] - ptr), |
| 2812 | (int)(offsets[1] - offsets[0])); |
| 2813 | |
| 2814 | /* Handle --output (which has already been syntax checked) */ |
| 2815 | |
| 2816 | else if (output_text != NULL) |
| 2817 | { |
| 2818 | if (display_output_text((PCRE2_SPTR)output_text, FALSE, |
| 2819 | (PCRE2_SPTR)ptr, offsets, mrc) || printname != NULL || |
| 2820 | number) |
| 2821 | fprintf(stdout, STDOUT_NL); |
| 2822 | } |
| 2823 | |
| 2824 | /* Handle --only-matching, which may occur many times */ |
| 2825 | |
| 2826 | else |
| 2827 | { |
| 2828 | BOOL printed = FALSE; |
| 2829 | omstr *om; |
| 2830 | |
| 2831 | for (om = only_matching; om != NULL; om = om->next) |
| 2832 | { |
| 2833 | int n = om->groupnum; |
| 2834 | if (n == 0 || n < mrc) |
| 2835 | { |
| 2836 | int plen = offsets[2*n + 1] - offsets[2*n]; |
| 2837 | if (plen > 0) |
| 2838 | { |
| 2839 | if (printed && om_separator != NULL) |
| 2840 | fprintf(stdout, "%s", om_separator); |
| 2841 | print_match(ptr + offsets[n*2], plen); |
| 2842 | printed = TRUE; |
| 2843 | } |
| 2844 | } |
| 2845 | } |
| 2846 | |
| 2847 | if (printed || printname != NULL || number) |
| 2848 | fprintf(stdout, STDOUT_NL); |
| 2849 | } |
| 2850 | |
| 2851 | /* Prepare to repeat to find the next match in the line. */ |
| 2852 | |
| 2853 | match = FALSE; |
| 2854 | if (line_buffered) fflush(stdout); |
| 2855 | rc = 0; /* Had some success */ |
| 2856 | |
| 2857 | /* If the pattern contained a lookbehind that included \K, it is |
| 2858 | possible that the end of the match might be at or before the actual |
| 2859 | starting offset we have just used. In this case, start one character |
| 2860 | further on. */ |
| 2861 | |
| 2862 | startoffset = offsets[1]; /* Restart after the match */ |
| 2863 | oldstartoffset = pcre2_get_startchar(match_data); |
| 2864 | if (startoffset <= oldstartoffset) |
| 2865 | { |
| 2866 | if (startoffset >= length) goto END_ONE_MATCH; /* Were at end */ |
| 2867 | startoffset = oldstartoffset + 1; |
| 2868 | if (utf) while ((ptr[startoffset] & 0xc0) == 0x80) startoffset++; |
| 2869 | } |
| 2870 | |
| 2871 | /* If the current match ended past the end of the line (only possible |
| 2872 | in multiline mode), we must move on to the line in which it did end |
| 2873 | before searching for more matches. */ |
| 2874 | |
| 2875 | while (startoffset > linelength) |
| 2876 | { |
| 2877 | ptr += linelength + endlinelength; |
| 2878 | filepos += (int)(linelength + endlinelength); |
| 2879 | linenumber++; |
| 2880 | startoffset -= (int)(linelength + endlinelength); |
| 2881 | t = end_of_line(ptr, endptr, &endlinelength); |
| 2882 | linelength = t - ptr - endlinelength; |
| 2883 | length = (PCRE2_SIZE)(endptr - ptr); |
| 2884 | } |
| 2885 | |
| 2886 | goto ONLY_MATCHING_RESTART; |
| 2887 | } |
| 2888 | } |
| 2889 | |
| 2890 | /* This is the default case when none of the above options is set. We print |
| 2891 | the matching lines(s), possibly preceded and/or followed by other lines of |
| 2892 | context. */ |
| 2893 | |
| 2894 | else |
| 2895 | { |
| 2896 | lines_printed = TRUE; |
| 2897 | |
| 2898 | /* See if there is a requirement to print some "after" lines from a |
| 2899 | previous match. We never print any overlaps. */ |
| 2900 | |
| 2901 | if (after_context > 0 && lastmatchnumber > 0) |
| 2902 | { |
| 2903 | int ellength; |
| 2904 | int linecount = 0; |
| 2905 | char *p = lastmatchrestart; |
| 2906 | |
| 2907 | while (p < ptr && linecount < after_context) |
| 2908 | { |
| 2909 | p = end_of_line(p, ptr, &ellength); |
| 2910 | linecount++; |
| 2911 | } |
| 2912 | |
| 2913 | /* It is important to advance lastmatchrestart during this printing so |
| 2914 | that it interacts correctly with any "before" printing below. Print |
| 2915 | each line's data using fwrite() in case there are binary zeroes. */ |
| 2916 | |
| 2917 | while (lastmatchrestart < p) |
| 2918 | { |
| 2919 | char *pp = lastmatchrestart; |
| 2920 | if (printname != NULL) fprintf(stdout, "%s-", printname); |
| 2921 | if (number) fprintf(stdout, "%lu-", lastmatchnumber++); |
| 2922 | pp = end_of_line(pp, endptr, &ellength); |
| 2923 | FWRITE_IGNORE(lastmatchrestart, 1, pp - lastmatchrestart, stdout); |
| 2924 | lastmatchrestart = pp; |
| 2925 | } |
| 2926 | if (lastmatchrestart != ptr) hyphenpending = TRUE; |
| 2927 | } |
| 2928 | |
| 2929 | /* If there were non-contiguous lines printed above, insert hyphens. */ |
| 2930 | |
| 2931 | if (hyphenpending) |
| 2932 | { |
| 2933 | fprintf(stdout, "--" STDOUT_NL); |
| 2934 | hyphenpending = FALSE; |
| 2935 | hyphenprinted = TRUE; |
| 2936 | } |
| 2937 | |
| 2938 | /* See if there is a requirement to print some "before" lines for this |
| 2939 | match. Again, don't print overlaps. */ |
| 2940 | |
| 2941 | if (before_context > 0) |
| 2942 | { |
| 2943 | int linecount = 0; |
| 2944 | char *p = ptr; |
| 2945 | |
| 2946 | while (p > main_buffer && |
| 2947 | (lastmatchnumber == 0 || p > lastmatchrestart) && |
| 2948 | linecount < before_context) |
| 2949 | { |
| 2950 | linecount++; |
| 2951 | p = previous_line(p, main_buffer); |
| 2952 | } |
| 2953 | |
| 2954 | if (lastmatchnumber > 0 && p > lastmatchrestart && !hyphenprinted) |
| 2955 | fprintf(stdout, "--" STDOUT_NL); |
| 2956 | |
| 2957 | while (p < ptr) |
| 2958 | { |
| 2959 | int ellength; |
| 2960 | char *pp = p; |
| 2961 | if (printname != NULL) fprintf(stdout, "%s-", printname); |
| 2962 | if (number) fprintf(stdout, "%lu-", linenumber - linecount--); |
| 2963 | pp = end_of_line(pp, endptr, &ellength); |
| 2964 | FWRITE_IGNORE(p, 1, pp - p, stdout); |
| 2965 | p = pp; |
| 2966 | } |
| 2967 | } |
| 2968 | |
| 2969 | /* Now print the matching line(s); ensure we set hyphenpending at the end |
| 2970 | of the file if any context lines are being output. */ |
| 2971 | |
| 2972 | if (after_context > 0 || before_context > 0) |
| 2973 | endhyphenpending = TRUE; |
| 2974 | |
| 2975 | if (printname != NULL) fprintf(stdout, "%s:", printname); |
| 2976 | if (number) fprintf(stdout, "%lu:", linenumber); |
| 2977 | |
| 2978 | /* This extra option, for Jeffrey Friedl's debugging requirements, |
| 2979 | replaces the matched string, or a specific captured string if it exists, |
| 2980 | with X. When this happens, colouring is ignored. */ |
| 2981 | |
| 2982 | #ifdef JFRIEDL_DEBUG |
| 2983 | if (S_arg >= 0 && S_arg < mrc) |
| 2984 | { |
| 2985 | int first = S_arg * 2; |
| 2986 | int last = first + 1; |
| 2987 | FWRITE_IGNORE(ptr, 1, offsets[first], stdout); |
| 2988 | fprintf(stdout, "X"); |
| 2989 | FWRITE_IGNORE(ptr + offsets[last], 1, linelength - offsets[last], stdout); |
| 2990 | } |
| 2991 | else |
| 2992 | #endif |
| 2993 | |
| 2994 | /* In multiline mode, or if colouring, we have to split the line(s) up |
| 2995 | and search for further matches, but not of course if the line is a |
| 2996 | non-match. In multiline mode this is necessary in case there is another |
| 2997 | match that spans the end of the current line. When colouring we want to |
| 2998 | colour all matches. */ |
| 2999 | |
| 3000 | if ((multiline || do_colour) && !invert) |
| 3001 | { |
| 3002 | int plength; |
| 3003 | PCRE2_SIZE endprevious; |
| 3004 | |
| 3005 | /* The use of \K may make the end offset earlier than the start. In |
| 3006 | this situation, swap them round. */ |
| 3007 | |
| 3008 | if (offsets[0] > offsets[1]) |
| 3009 | { |
| 3010 | PCRE2_SIZE temp = offsets[0]; |
| 3011 | offsets[0] = offsets[1]; |
| 3012 | offsets[1] = temp; |
| 3013 | } |
| 3014 | |
| 3015 | FWRITE_IGNORE(ptr, 1, offsets[0], stdout); |
| 3016 | print_match(ptr + offsets[0], offsets[1] - offsets[0]); |
| 3017 | |
| 3018 | for (;;) |
| 3019 | { |
| 3020 | PCRE2_SIZE oldstartoffset = pcre2_get_startchar(match_data); |
| 3021 | |
| 3022 | endprevious = offsets[1]; |
| 3023 | startoffset = endprevious; /* Advance after previous match. */ |
| 3024 | |
| 3025 | /* If the pattern contained a lookbehind that included \K, it is |
| 3026 | possible that the end of the match might be at or before the actual |
| 3027 | starting offset we have just used. In this case, start one character |
| 3028 | further on. */ |
| 3029 | |
| 3030 | if (startoffset <= oldstartoffset) |
| 3031 | { |
| 3032 | startoffset = oldstartoffset + 1; |
| 3033 | if (utf) while ((ptr[startoffset] & 0xc0) == 0x80) startoffset++; |
| 3034 | } |
| 3035 | |
| 3036 | /* If the current match ended past the end of the line (only possible |
| 3037 | in multiline mode), we must move on to the line in which it did end |
| 3038 | before searching for more matches. Because the PCRE2_FIRSTLINE option |
| 3039 | is set, the start of the match will always be before the first |
| 3040 | newline sequence. */ |
| 3041 | |
| 3042 | while (startoffset > linelength + endlinelength) |
| 3043 | { |
| 3044 | ptr += linelength + endlinelength; |
| 3045 | filepos += (int)(linelength + endlinelength); |
| 3046 | linenumber++; |
| 3047 | startoffset -= (int)(linelength + endlinelength); |
| 3048 | endprevious -= (int)(linelength + endlinelength); |
| 3049 | t = end_of_line(ptr, endptr, &endlinelength); |
| 3050 | linelength = t - ptr - endlinelength; |
| 3051 | length = (PCRE2_SIZE)(endptr - ptr); |
| 3052 | } |
| 3053 | |
| 3054 | /* If startoffset is at the exact end of the line it means this |
| 3055 | complete line was the final part of the match, so there is nothing |
| 3056 | more to do. */ |
| 3057 | |
| 3058 | if (startoffset == linelength + endlinelength) break; |
| 3059 | |
| 3060 | /* Otherwise, run a match from within the final line, and if found, |
| 3061 | loop for any that may follow. */ |
| 3062 | |
| 3063 | if (!match_patterns(ptr, length, options, startoffset, &mrc)) break; |
| 3064 | |
| 3065 | /* The use of \K may make the end offset earlier than the start. In |
| 3066 | this situation, swap them round. */ |
| 3067 | |
| 3068 | if (offsets[0] > offsets[1]) |
| 3069 | { |
| 3070 | PCRE2_SIZE temp = offsets[0]; |
| 3071 | offsets[0] = offsets[1]; |
| 3072 | offsets[1] = temp; |
| 3073 | } |
| 3074 | |
| 3075 | FWRITE_IGNORE(ptr + endprevious, 1, offsets[0] - endprevious, stdout); |
| 3076 | print_match(ptr + offsets[0], offsets[1] - offsets[0]); |
| 3077 | } |
| 3078 | |
| 3079 | /* In multiline mode, we may have already printed the complete line |
| 3080 | and its line-ending characters (if they matched the pattern), so there |
| 3081 | may be no more to print. */ |
| 3082 | |
| 3083 | plength = (int)((linelength + endlinelength) - endprevious); |
| 3084 | if (plength > 0) FWRITE_IGNORE(ptr + endprevious, 1, plength, stdout); |
| 3085 | } |
| 3086 | |
| 3087 | /* Not colouring or multiline; no need to search for further matches. */ |
| 3088 | |
| 3089 | else FWRITE_IGNORE(ptr, 1, linelength + endlinelength, stdout); |
| 3090 | } |
| 3091 | |
| 3092 | /* End of doing what has to be done for a match. If --line-buffered was |
| 3093 | given, flush the output. */ |
| 3094 | |
| 3095 | if (line_buffered) fflush(stdout); |
| 3096 | rc = 0; /* Had some success */ |
| 3097 | |
| 3098 | /* Remember where the last match happened for after_context. We remember |
| 3099 | where we are about to restart, and that line's number. */ |
| 3100 | |
| 3101 | lastmatchrestart = ptr + linelength + endlinelength; |
| 3102 | lastmatchnumber = linenumber + 1; |
| 3103 | |
| 3104 | /* If a line was printed and we are now at the end of the file and the last |
| 3105 | line had no newline, output one. */ |
| 3106 | |
| 3107 | if (lines_printed && lastmatchrestart >= endptr && endlinelength == 0) |
| 3108 | write_final_newline(); |
| 3109 | } |
| 3110 | |
| 3111 | /* For a match in multiline inverted mode (which of course did not cause |
| 3112 | anything to be printed), we have to move on to the end of the match before |
| 3113 | proceeding. */ |
| 3114 | |
| 3115 | if (multiline && invert && match) |
| 3116 | { |
| 3117 | int ellength; |
| 3118 | char *endmatch = ptr + offsets[1]; |
| 3119 | t = ptr; |
| 3120 | while (t < endmatch) |
| 3121 | { |
| 3122 | t = end_of_line(t, endptr, &ellength); |
| 3123 | if (t <= endmatch) linenumber++; else break; |
| 3124 | } |
| 3125 | endmatch = end_of_line(endmatch, endptr, &ellength); |
| 3126 | linelength = endmatch - ptr - ellength; |
| 3127 | } |
| 3128 | |
| 3129 | /* Advance to after the newline and increment the line number. The file |
| 3130 | offset to the current line is maintained in filepos. */ |
| 3131 | |
| 3132 | END_ONE_MATCH: |
| 3133 | ptr += linelength + endlinelength; |
| 3134 | filepos += (int)(linelength + endlinelength); |
| 3135 | linenumber++; |
| 3136 | |
| 3137 | /* If there was at least one match (or a non-match, as required) in the line, |
| 3138 | increment the count for the -m option. */ |
| 3139 | |
| 3140 | if (line_matched) count_matched_lines++; |
| 3141 | |
| 3142 | /* If input is line buffered, and the buffer is not yet full, read another |
| 3143 | line and add it into the buffer. */ |
| 3144 | |
| 3145 | if (input_line_buffered && bufflength < (PCRE2_SIZE)bufsize) |
| 3146 | { |
| 3147 | int add = read_one_line(ptr, bufsize - (int)(ptr - main_buffer), in); |
| 3148 | bufflength += add; |
| 3149 | endptr += add; |
| 3150 | } |
| 3151 | |
| 3152 | /* If we haven't yet reached the end of the file (the buffer is full), and |
| 3153 | the current point is in the top 1/3 of the buffer, slide the buffer down by |
| 3154 | 1/3 and refill it. Before we do this, if some unprinted "after" lines are |
| 3155 | about to be lost, print them. */ |
| 3156 | |
| 3157 | if (bufflength >= (PCRE2_SIZE)bufsize && ptr > main_buffer + 2*bufthird) |
| 3158 | { |
| 3159 | if (after_context > 0 && |
| 3160 | lastmatchnumber > 0 && |
| 3161 | lastmatchrestart < main_buffer + bufthird) |
| 3162 | { |
| 3163 | do_after_lines(lastmatchnumber, lastmatchrestart, endptr, printname); |
| 3164 | lastmatchnumber = 0; /* Indicates no after lines pending */ |
| 3165 | } |
| 3166 | |
| 3167 | /* Now do the shuffle */ |
| 3168 | |
| 3169 | (void)memmove(main_buffer, main_buffer + bufthird, 2*bufthird); |
| 3170 | ptr -= bufthird; |
| 3171 | |
| 3172 | bufflength = 2*bufthird + fill_buffer(handle, frtype, |
| 3173 | main_buffer + 2*bufthird, bufthird, input_line_buffered); |
| 3174 | endptr = main_buffer + bufflength; |
| 3175 | |
| 3176 | /* Adjust any last match point */ |
| 3177 | |
| 3178 | if (lastmatchnumber > 0) lastmatchrestart -= bufthird; |
| 3179 | } |
| 3180 | } /* Loop through the whole file */ |
| 3181 | |
| 3182 | /* End of file; print final "after" lines if wanted; do_after_lines sets |
| 3183 | hyphenpending if it prints something. */ |
| 3184 | |
| 3185 | if (only_matching_count == 0 && !(count_only|show_total_count)) |
| 3186 | { |
| 3187 | do_after_lines(lastmatchnumber, lastmatchrestart, endptr, printname); |
| 3188 | hyphenpending |= endhyphenpending; |
| 3189 | } |
| 3190 | |
| 3191 | /* Print the file name if we are looking for those without matches and there |
| 3192 | were none. If we found a match, we won't have got this far. */ |
| 3193 | |
| 3194 | if (filenames == FN_NOMATCH_ONLY) |
| 3195 | { |
| 3196 | fprintf(stdout, "%s" STDOUT_NL, printname); |
| 3197 | return 0; |
| 3198 | } |
| 3199 | |
| 3200 | /* Print the match count if wanted */ |
| 3201 | |
| 3202 | if (count_only && !quiet) |
| 3203 | { |
| 3204 | if (count > 0 || !omit_zero_count) |
| 3205 | { |
| 3206 | if (printname != NULL && filenames != FN_NONE) |
| 3207 | fprintf(stdout, "%s:", printname); |
| 3208 | fprintf(stdout, "%lu" STDOUT_NL, count); |
| 3209 | counts_printed++; |
| 3210 | } |
| 3211 | } |
| 3212 | |
| 3213 | total_count += count; /* Can be set without count_only */ |
| 3214 | return rc; |
| 3215 | } |
| 3216 | |
| 3217 | |
| 3218 | |
| 3219 | /************************************************* |
| 3220 | * Grep a file or recurse into a directory * |
| 3221 | *************************************************/ |
| 3222 | |
| 3223 | /* Given a path name, if it's a directory, scan all the files if we are |
| 3224 | recursing; if it's a file, grep it. |
| 3225 | |
| 3226 | Arguments: |
| 3227 | pathname the path to investigate |
| 3228 | dir_recurse TRUE if recursing is wanted (-r or -drecurse) |
| 3229 | only_one_at_top TRUE if the path is the only one at toplevel |
| 3230 | |
| 3231 | Returns: -1 the file/directory was skipped |
| 3232 | 0 if there was at least one match |
| 3233 | 1 if there were no matches |
| 3234 | 2 there was some kind of error |
| 3235 | |
| 3236 | However, file opening failures are suppressed if "silent" is set. |
| 3237 | */ |
| 3238 | |
| 3239 | static int |
| 3240 | grep_or_recurse(char *pathname, BOOL dir_recurse, BOOL only_one_at_top) |
| 3241 | { |
| 3242 | int rc = 1; |
| 3243 | int frtype; |
| 3244 | void *handle; |
| 3245 | char *lastcomp; |
| 3246 | FILE *in = NULL; /* Ensure initialized */ |
| 3247 | |
| 3248 | #ifdef SUPPORT_LIBZ |
| 3249 | gzFile ingz = NULL; |
| 3250 | #endif |
| 3251 | |
| 3252 | #ifdef SUPPORT_LIBBZ2 |
| 3253 | BZFILE *inbz2 = NULL; |
| 3254 | #endif |
| 3255 | |
| 3256 | #if defined SUPPORT_LIBZ || defined SUPPORT_LIBBZ2 |
| 3257 | int pathlen; |
| 3258 | #endif |
| 3259 | |
| 3260 | #if defined NATIVE_ZOS |
| 3261 | int zos_type; |
| 3262 | FILE *zos_test_file; |
| 3263 | #endif |
| 3264 | |
| 3265 | /* If the file name is "-" we scan stdin */ |
| 3266 | |
| 3267 | if (strcmp(pathname, "-") == 0) |
| 3268 | { |
| 3269 | return pcre2grep(stdin, FR_PLAIN, stdin_name, |
| 3270 | (filenames > FN_DEFAULT || (filenames == FN_DEFAULT && !only_one_at_top))? |
| 3271 | stdin_name : NULL); |
| 3272 | } |
| 3273 | |
| 3274 | /* Inclusion and exclusion: --include-dir and --exclude-dir apply only to |
| 3275 | directories, whereas --include and --exclude apply to everything else. The test |
| 3276 | is against the final component of the path. */ |
| 3277 | |
| 3278 | lastcomp = strrchr(pathname, FILESEP); |
| 3279 | lastcomp = (lastcomp == NULL)? pathname : lastcomp + 1; |
| 3280 | |
| 3281 | /* If the file is a directory, skip if not recursing or if explicitly excluded. |
| 3282 | Otherwise, scan the directory and recurse for each path within it. The scanning |
| 3283 | code is localized so it can be made system-specific. */ |
| 3284 | |
| 3285 | |
| 3286 | /* For z/OS, determine the file type. */ |
| 3287 | |
| 3288 | #if defined NATIVE_ZOS |
| 3289 | zos_test_file = fopen(pathname,"rb"); |
| 3290 | |
| 3291 | if (zos_test_file == NULL) |
| 3292 | { |
| 3293 | if (!silent) fprintf(stderr, "pcre2grep: failed to test next file %s\n", |
| 3294 | pathname, strerror(errno)); |
| 3295 | return -1; |
| 3296 | } |
| 3297 | zos_type = identifyzosfiletype (zos_test_file); |
| 3298 | fclose (zos_test_file); |
| 3299 | |
| 3300 | /* Handle a PDS in separate code */ |
| 3301 | |
| 3302 | if (zos_type == __ZOS_PDS || zos_type == __ZOS_PDSE) |
| 3303 | { |
| 3304 | return travelonpdsdir (pathname, only_one_at_top); |
| 3305 | } |
| 3306 | |
| 3307 | /* Deal with regular files in the normal way below. These types are: |
| 3308 | zos_type == __ZOS_PDS_MEMBER |
| 3309 | zos_type == __ZOS_PS |
| 3310 | zos_type == __ZOS_VSAM_KSDS |
| 3311 | zos_type == __ZOS_VSAM_ESDS |
| 3312 | zos_type == __ZOS_VSAM_RRDS |
| 3313 | */ |
| 3314 | |
| 3315 | /* Handle a z/OS directory using common code. */ |
| 3316 | |
| 3317 | else if (zos_type == __ZOS_HFS) |
| 3318 | { |
| 3319 | #endif /* NATIVE_ZOS */ |
| 3320 | |
| 3321 | |
| 3322 | /* Handle directories: common code for all OS */ |
| 3323 | |
| 3324 | if (isdirectory(pathname)) |
| 3325 | { |
| 3326 | if (dee_action == dee_SKIP || |
| 3327 | !test_incexc(lastcomp, include_dir_patterns, exclude_dir_patterns)) |
| 3328 | return -1; |
| 3329 | |
| 3330 | if (dee_action == dee_RECURSE) |
| 3331 | { |
| 3332 | char childpath[FNBUFSIZ]; |
| 3333 | char *nextfile; |
| 3334 | directory_type *dir = opendirectory(pathname); |
| 3335 | |
| 3336 | if (dir == NULL) |
| 3337 | { |
| 3338 | if (!silent) |
| 3339 | fprintf(stderr, "pcre2grep: Failed to open directory %s: %s\n", pathname, |
| 3340 | strerror(errno)); |
| 3341 | return 2; |
| 3342 | } |
| 3343 | |
| 3344 | while ((nextfile = readdirectory(dir)) != NULL) |
| 3345 | { |
| 3346 | int frc; |
| 3347 | int fnlength = strlen(pathname) + strlen(nextfile) + 2; |
| 3348 | if (fnlength > FNBUFSIZ) |
| 3349 | { |
| 3350 | fprintf(stderr, "pcre2grep: recursive filename is too long\n"); |
| 3351 | rc = 2; |
| 3352 | break; |
| 3353 | } |
| 3354 | sprintf(childpath, "%s%c%s", pathname, FILESEP, nextfile); |
| 3355 | |
| 3356 | /* If the realpath() function is available, we can try to prevent endless |
| 3357 | recursion caused by a symlink pointing to a parent directory (GitHub |
| 3358 | issue #2 (old Bugzilla #2794). Original patch from Thomas Tempelmann. |
| 3359 | Modified to avoid using strlcat() because that isn't a standard C |
| 3360 | function, and also modified not to copy back the fully resolved path, |
| 3361 | because that affects the output from pcre2grep. */ |
| 3362 | |
| 3363 | #ifdef HAVE_REALPATH |
| 3364 | char resolvedpath[PATH_MAX]; |
| 3365 | if (realpath(childpath, resolvedpath) == NULL) |
| 3366 | continue; /* This path is invalid - we can skip processing this */ |
| 3367 | BOOL isSame = strcmp(pathname, resolvedpath) == 0; |
| 3368 | if (isSame) continue; /* We have a recursion */ |
| 3369 | size_t rlen = strlen(resolvedpath); |
| 3370 | if (rlen++ < sizeof(resolvedpath) - 3) |
| 3371 | { |
| 3372 | strcat(resolvedpath, "/"); |
| 3373 | BOOL contained = strncmp(pathname, resolvedpath, rlen) == 0; |
| 3374 | if (contained) continue; /* We have a recursion */ |
| 3375 | } |
| 3376 | #endif /* HAVE_REALPATH */ |
| 3377 | |
| 3378 | frc = grep_or_recurse(childpath, dir_recurse, FALSE); |
| 3379 | if (frc > 1) rc = frc; |
| 3380 | else if (frc == 0 && rc == 1) rc = 0; |
| 3381 | } |
| 3382 | |
| 3383 | closedirectory(dir); |
| 3384 | return rc; |
| 3385 | } |
| 3386 | } |
| 3387 | |
| 3388 | #ifdef WIN32 |
| 3389 | if (iswild(pathname)) |
| 3390 | { |
| 3391 | char buffer[1024]; |
| 3392 | char *nextfile; |
| 3393 | char *name; |
| 3394 | directory_type *dir = opendirectory(pathname); |
| 3395 | |
| 3396 | if (dir == NULL) |
| 3397 | return 0; |
| 3398 | |
| 3399 | for (nextfile = name = pathname; *nextfile != 0; nextfile++) |
| 3400 | if (*nextfile == '/' || *nextfile == '\\') |
| 3401 | name = nextfile + 1; |
| 3402 | *name = 0; |
| 3403 | |
| 3404 | while ((nextfile = readdirectory(dir)) != NULL) |
| 3405 | { |
| 3406 | int frc; |
| 3407 | sprintf(buffer, "%.512s%.128s", pathname, nextfile); |
| 3408 | frc = grep_or_recurse(buffer, dir_recurse, FALSE); |
| 3409 | if (frc > 1) rc = frc; |
| 3410 | else if (frc == 0 && rc == 1) rc = 0; |
| 3411 | } |
| 3412 | |
| 3413 | closedirectory(dir); |
| 3414 | return rc; |
| 3415 | } |
| 3416 | #endif |
| 3417 | |
| 3418 | #if defined NATIVE_ZOS |
| 3419 | } |
| 3420 | #endif |
| 3421 | |
| 3422 | /* If the file is not a directory, check for a regular file, and if it is not, |
| 3423 | skip it if that's been requested. Otherwise, check for an explicit inclusion or |
| 3424 | exclusion. */ |
| 3425 | |
| 3426 | else if ( |
| 3427 | #if defined NATIVE_ZOS |
| 3428 | (zos_type == __ZOS_NOFILE && DEE_action == DEE_SKIP) || |
| 3429 | #else /* all other OS */ |
| 3430 | (!isregfile(pathname) && DEE_action == DEE_SKIP) || |
| 3431 | #endif |
| 3432 | !test_incexc(lastcomp, include_patterns, exclude_patterns)) |
| 3433 | return -1; /* File skipped */ |
| 3434 | |
| 3435 | /* Control reaches here if we have a regular file, or if we have a directory |
| 3436 | and recursion or skipping was not requested, or if we have anything else and |
| 3437 | skipping was not requested. The scan proceeds. If this is the first and only |
| 3438 | argument at top level, we don't show the file name, unless we are only showing |
| 3439 | the file name, or the filename was forced (-H). */ |
| 3440 | |
| 3441 | #if defined SUPPORT_LIBZ || defined SUPPORT_LIBBZ2 |
| 3442 | pathlen = (int)(strlen(pathname)); |
| 3443 | #endif |
| 3444 | |
| 3445 | /* Open using zlib if it is supported and the file name ends with .gz. */ |
| 3446 | |
| 3447 | #ifdef SUPPORT_LIBZ |
| 3448 | if (pathlen > 3 && strcmp(pathname + pathlen - 3, ".gz") == 0) |
| 3449 | { |
| 3450 | ingz = gzopen(pathname, "rb"); |
| 3451 | if (ingz == NULL) |
| 3452 | { |
| 3453 | if (!silent) |
| 3454 | fprintf(stderr, "pcre2grep: Failed to open %s: %s\n", pathname, |
| 3455 | strerror(errno)); |
| 3456 | return 2; |
| 3457 | } |
| 3458 | handle = (void *)ingz; |
| 3459 | frtype = FR_LIBZ; |
| 3460 | } |
| 3461 | else |
| 3462 | #endif |
| 3463 | |
| 3464 | /* Otherwise open with bz2lib if it is supported and the name ends with .bz2. */ |
| 3465 | |
| 3466 | #ifdef SUPPORT_LIBBZ2 |
| 3467 | if (pathlen > 4 && strcmp(pathname + pathlen - 4, ".bz2") == 0) |
| 3468 | { |
| 3469 | inbz2 = BZ2_bzopen(pathname, "rb"); |
| 3470 | handle = (void *)inbz2; |
| 3471 | frtype = FR_LIBBZ2; |
| 3472 | } |
| 3473 | else |
| 3474 | #endif |
| 3475 | |
| 3476 | /* Otherwise use plain fopen(). The label is so that we can come back here if |
| 3477 | an attempt to read a .bz2 file indicates that it really is a plain file. */ |
| 3478 | |
| 3479 | #ifdef SUPPORT_LIBBZ2 |
| 3480 | PLAIN_FILE: |
| 3481 | #endif |
| 3482 | { |
| 3483 | in = fopen(pathname, "rb"); |
| 3484 | handle = (void *)in; |
| 3485 | frtype = FR_PLAIN; |
| 3486 | } |
| 3487 | |
| 3488 | /* All the opening methods return errno when they fail. */ |
| 3489 | |
| 3490 | if (handle == NULL) |
| 3491 | { |
| 3492 | if (!silent) |
| 3493 | fprintf(stderr, "pcre2grep: Failed to open %s: %s\n", pathname, |
| 3494 | strerror(errno)); |
| 3495 | return 2; |
| 3496 | } |
| 3497 | |
| 3498 | /* Now grep the file */ |
| 3499 | |
| 3500 | rc = pcre2grep(handle, frtype, pathname, (filenames > FN_DEFAULT || |
| 3501 | (filenames == FN_DEFAULT && !only_one_at_top))? pathname : NULL); |
| 3502 | |
| 3503 | /* Close in an appropriate manner. */ |
| 3504 | |
| 3505 | #ifdef SUPPORT_LIBZ |
| 3506 | if (frtype == FR_LIBZ) |
| 3507 | gzclose(ingz); |
| 3508 | else |
| 3509 | #endif |
| 3510 | |
| 3511 | /* If it is a .bz2 file and the result is 3, it means that the first attempt to |
| 3512 | read failed. If the error indicates that the file isn't in fact bzipped, try |
| 3513 | again as a normal file. */ |
| 3514 | |
| 3515 | #ifdef SUPPORT_LIBBZ2 |
| 3516 | if (frtype == FR_LIBBZ2) |
| 3517 | { |
| 3518 | if (rc == 3) |
| 3519 | { |
| 3520 | int errnum; |
| 3521 | const char *err = BZ2_bzerror(inbz2, &errnum); |
| 3522 | if (errnum == BZ_DATA_ERROR_MAGIC) |
| 3523 | { |
| 3524 | BZ2_bzclose(inbz2); |
| 3525 | goto PLAIN_FILE; |
| 3526 | } |
| 3527 | else if (!silent) |
| 3528 | fprintf(stderr, "pcre2grep: Failed to read %s using bzlib: %s\n", |
| 3529 | pathname, err); |
| 3530 | rc = 2; /* The normal "something went wrong" code */ |
| 3531 | } |
| 3532 | BZ2_bzclose(inbz2); |
| 3533 | } |
| 3534 | else |
| 3535 | #endif |
| 3536 | |
| 3537 | /* Normal file close */ |
| 3538 | |
| 3539 | fclose(in); |
| 3540 | |
| 3541 | /* Pass back the yield from pcre2grep(). */ |
| 3542 | |
| 3543 | return rc; |
| 3544 | } |
| 3545 | |
| 3546 | |
| 3547 | |
| 3548 | /************************************************* |
| 3549 | * Handle a no-data option * |
| 3550 | *************************************************/ |
| 3551 | |
| 3552 | static int |
| 3553 | handle_option(int letter, int options) |
| 3554 | { |
| 3555 | switch(letter) |
| 3556 | { |
| 3557 | case N_FOFFSETS: file_offsets = TRUE; break; |
| 3558 | case N_HELP: help(); pcre2grep_exit(0); break; /* Stops compiler warning */ |
| 3559 | case N_LBUFFER: line_buffered = TRUE; break; |
| 3560 | case N_LOFFSETS: line_offsets = number = TRUE; break; |
| 3561 | case N_NOJIT: use_jit = FALSE; break; |
| 3562 | case N_ALLABSK: extra_options |= PCRE2_EXTRA_ALLOW_LOOKAROUND_BSK; break; |
| 3563 | case 'a': binary_files = BIN_TEXT; break; |
| 3564 | case 'c': count_only = TRUE; break; |
| 3565 | case 'F': options |= PCRE2_LITERAL; break; |
| 3566 | case 'H': filenames = FN_FORCE; break; |
| 3567 | case 'I': binary_files = BIN_NOMATCH; break; |
| 3568 | case 'h': filenames = FN_NONE; break; |
| 3569 | case 'i': options |= PCRE2_CASELESS; break; |
| 3570 | case 'l': omit_zero_count = TRUE; filenames = FN_MATCH_ONLY; break; |
| 3571 | case 'L': filenames = FN_NOMATCH_ONLY; break; |
| 3572 | case 'M': multiline = TRUE; options |= PCRE2_MULTILINE|PCRE2_FIRSTLINE; break; |
| 3573 | case 'n': number = TRUE; break; |
| 3574 | |
| 3575 | case 'o': |
| 3576 | only_matching_last = add_number(0, only_matching_last); |
| 3577 | if (only_matching == NULL) only_matching = only_matching_last; |
| 3578 | break; |
| 3579 | |
| 3580 | case 'q': quiet = TRUE; break; |
| 3581 | case 'r': dee_action = dee_RECURSE; break; |
| 3582 | case 's': silent = TRUE; break; |
| 3583 | case 't': show_total_count = TRUE; break; |
| 3584 | case 'u': options |= PCRE2_UTF; utf = TRUE; break; |
| 3585 | case 'U': options |= PCRE2_UTF|PCRE2_MATCH_INVALID_UTF; utf = TRUE; break; |
| 3586 | case 'v': invert = TRUE; break; |
| 3587 | case 'w': extra_options |= PCRE2_EXTRA_MATCH_WORD; break; |
| 3588 | case 'x': extra_options |= PCRE2_EXTRA_MATCH_LINE; break; |
| 3589 | |
| 3590 | case 'V': |
| 3591 | { |
| 3592 | unsigned char buffer[128]; |
| 3593 | (void)pcre2_config(PCRE2_CONFIG_VERSION, buffer); |
| 3594 | fprintf(stdout, "pcre2grep version %s" STDOUT_NL, buffer); |
| 3595 | } |
| 3596 | pcre2grep_exit(0); |
| 3597 | break; |
| 3598 | |
| 3599 | default: |
| 3600 | fprintf(stderr, "pcre2grep: Unknown option -%c\n", letter); |
| 3601 | pcre2grep_exit(usage(2)); |
| 3602 | } |
| 3603 | |
| 3604 | return options; |
| 3605 | } |
| 3606 | |
| 3607 | |
| 3608 | |
| 3609 | /************************************************* |
| 3610 | * Construct printed ordinal * |
| 3611 | *************************************************/ |
| 3612 | |
| 3613 | /* This turns a number into "1st", "3rd", etc. */ |
| 3614 | |
| 3615 | static char * |
| 3616 | ordin(int n) |
| 3617 | { |
| 3618 | static char buffer[14]; |
| 3619 | char *p = buffer; |
| 3620 | sprintf(p, "%d", n); |
| 3621 | while (*p != 0) p++; |
| 3622 | n %= 100; |
| 3623 | if (n >= 11 && n <= 13) n = 0; |
| 3624 | switch (n%10) |
| 3625 | { |
| 3626 | case 1: strcpy(p, "st"); break; |
| 3627 | case 2: strcpy(p, "nd"); break; |
| 3628 | case 3: strcpy(p, "rd"); break; |
| 3629 | default: strcpy(p, "th"); break; |
| 3630 | } |
| 3631 | return buffer; |
| 3632 | } |
| 3633 | |
| 3634 | |
| 3635 | |
| 3636 | /************************************************* |
| 3637 | * Compile a single pattern * |
| 3638 | *************************************************/ |
| 3639 | |
| 3640 | /* Do nothing if the pattern has already been compiled. This is the case for |
| 3641 | include/exclude patterns read from a file. |
| 3642 | |
| 3643 | When the -F option has been used, each "pattern" may be a list of strings, |
| 3644 | separated by line breaks. They will be matched literally. We split such a |
| 3645 | string and compile the first substring, inserting an additional block into the |
| 3646 | pattern chain. |
| 3647 | |
| 3648 | Arguments: |
| 3649 | p points to the pattern block |
| 3650 | options the PCRE options |
| 3651 | fromfile TRUE if the pattern was read from a file |
| 3652 | fromtext file name or identifying text (e.g. "include") |
| 3653 | count 0 if this is the only command line pattern, or |
| 3654 | number of the command line pattern, or |
| 3655 | linenumber for a pattern from a file |
| 3656 | |
| 3657 | Returns: TRUE on success, FALSE after an error |
| 3658 | */ |
| 3659 | |
| 3660 | static BOOL |
| 3661 | compile_pattern(patstr *p, int options, int fromfile, const char *fromtext, |
| 3662 | int count) |
| 3663 | { |
| 3664 | char *ps; |
| 3665 | int errcode; |
| 3666 | PCRE2_SIZE patlen, erroffset; |
| 3667 | PCRE2_UCHAR errmessbuffer[ERRBUFSIZ]; |
| 3668 | |
| 3669 | if (p->compiled != NULL) return TRUE; |
| 3670 | ps = p->string; |
| 3671 | patlen = p->length; |
| 3672 | |
| 3673 | if ((options & PCRE2_LITERAL) != 0) |
| 3674 | { |
| 3675 | int ellength; |
| 3676 | char *eop = ps + patlen; |
| 3677 | char *pe = end_of_line(ps, eop, &ellength); |
| 3678 | |
| 3679 | if (ellength != 0) |
| 3680 | { |
| 3681 | patlen = pe - ps - ellength; |
| 3682 | if (add_pattern(pe, p->length-patlen-ellength, p) == NULL) return FALSE; |
| 3683 | } |
| 3684 | } |
| 3685 | |
| 3686 | p->compiled = pcre2_compile((PCRE2_SPTR)ps, patlen, options, &errcode, |
| 3687 | &erroffset, compile_context); |
| 3688 | |
| 3689 | /* Handle successful compile. Try JIT-compiling if supported and enabled. We |
| 3690 | ignore any JIT compiler errors, relying falling back to interpreting if |
| 3691 | anything goes wrong with JIT. */ |
| 3692 | |
| 3693 | if (p->compiled != NULL) |
| 3694 | { |
| 3695 | #ifdef SUPPORT_PCRE2GREP_JIT |
| 3696 | if (use_jit) (void)pcre2_jit_compile(p->compiled, PCRE2_JIT_COMPLETE); |
| 3697 | #endif |
| 3698 | return TRUE; |
| 3699 | } |
| 3700 | |
| 3701 | /* Handle compile errors */ |
| 3702 | |
| 3703 | if (erroffset > patlen) erroffset = patlen; |
| 3704 | pcre2_get_error_message(errcode, errmessbuffer, sizeof(errmessbuffer)); |
| 3705 | |
| 3706 | if (fromfile) |
| 3707 | { |
| 3708 | fprintf(stderr, "pcre2grep: Error in regex in line %d of %s " |
| 3709 | "at offset %d: %s\n", count, fromtext, (int)erroffset, errmessbuffer); |
| 3710 | } |
| 3711 | else |
| 3712 | { |
| 3713 | if (count == 0) |
| 3714 | fprintf(stderr, "pcre2grep: Error in %s regex at offset %d: %s\n", |
| 3715 | fromtext, (int)erroffset, errmessbuffer); |
| 3716 | else |
| 3717 | fprintf(stderr, "pcre2grep: Error in %s %s regex at offset %d: %s\n", |
| 3718 | ordin(count), fromtext, (int)erroffset, errmessbuffer); |
| 3719 | } |
| 3720 | |
| 3721 | return FALSE; |
| 3722 | } |
| 3723 | |
| 3724 | |
| 3725 | |
| 3726 | /************************************************* |
| 3727 | * Read and compile a file of patterns * |
| 3728 | *************************************************/ |
| 3729 | |
| 3730 | /* This is used for --filelist, --include-from, and --exclude-from. |
| 3731 | |
| 3732 | Arguments: |
| 3733 | name the name of the file; "-" is stdin |
| 3734 | patptr pointer to the pattern chain anchor |
| 3735 | patlastptr pointer to the last pattern pointer |
| 3736 | |
| 3737 | Returns: TRUE if all went well |
| 3738 | */ |
| 3739 | |
| 3740 | static BOOL |
| 3741 | read_pattern_file(char *name, patstr **patptr, patstr **patlastptr) |
| 3742 | { |
| 3743 | int linenumber = 0; |
| 3744 | PCRE2_SIZE patlen; |
| 3745 | FILE *f; |
| 3746 | const char *filename; |
| 3747 | char buffer[MAXPATLEN+20]; |
| 3748 | |
| 3749 | if (strcmp(name, "-") == 0) |
| 3750 | { |
| 3751 | f = stdin; |
| 3752 | filename = stdin_name; |
| 3753 | } |
| 3754 | else |
| 3755 | { |
| 3756 | f = fopen(name, "r"); |
| 3757 | if (f == NULL) |
| 3758 | { |
| 3759 | fprintf(stderr, "pcre2grep: Failed to open %s: %s\n", name, strerror(errno)); |
| 3760 | return FALSE; |
| 3761 | } |
| 3762 | filename = name; |
| 3763 | } |
| 3764 | |
| 3765 | while ((patlen = read_one_line(buffer, sizeof(buffer), f)) > 0) |
| 3766 | { |
| 3767 | while (patlen > 0 && isspace((unsigned char)(buffer[patlen-1]))) patlen--; |
| 3768 | linenumber++; |
| 3769 | if (patlen == 0) continue; /* Skip blank lines */ |
| 3770 | |
| 3771 | /* Note: this call to add_pattern() puts a pointer to the local variable |
| 3772 | "buffer" into the pattern chain. However, that pointer is used only when |
| 3773 | compiling the pattern, which happens immediately below, so we flatten it |
| 3774 | afterwards, as a precaution against any later code trying to use it. */ |
| 3775 | |
| 3776 | *patlastptr = add_pattern(buffer, patlen, *patlastptr); |
| 3777 | if (*patlastptr == NULL) |
| 3778 | { |
| 3779 | if (f != stdin) fclose(f); |
| 3780 | return FALSE; |
| 3781 | } |
| 3782 | if (*patptr == NULL) *patptr = *patlastptr; |
| 3783 | |
| 3784 | /* This loop is needed because compiling a "pattern" when -F is set may add |
| 3785 | on additional literal patterns if the original contains a newline. In the |
| 3786 | common case, it never will, because read_one_line() stops at a newline. |
| 3787 | However, the -N option can be used to give pcre2grep a different newline |
| 3788 | setting. */ |
| 3789 | |
| 3790 | for(;;) |
| 3791 | { |
| 3792 | if (!compile_pattern(*patlastptr, pcre2_options, TRUE, filename, |
| 3793 | linenumber)) |
| 3794 | { |
| 3795 | if (f != stdin) fclose(f); |
| 3796 | return FALSE; |
| 3797 | } |
| 3798 | (*patlastptr)->string = NULL; /* Insurance */ |
| 3799 | if ((*patlastptr)->next == NULL) break; |
| 3800 | *patlastptr = (*patlastptr)->next; |
| 3801 | } |
| 3802 | } |
| 3803 | |
| 3804 | if (f != stdin) fclose(f); |
| 3805 | return TRUE; |
| 3806 | } |
| 3807 | |
| 3808 | |
| 3809 | |
| 3810 | /************************************************* |
| 3811 | * Main program * |
| 3812 | *************************************************/ |
| 3813 | |
| 3814 | /* Returns 0 if something matched, 1 if nothing matched, 2 after an error. */ |
| 3815 | |
| 3816 | int |
| 3817 | main(int argc, char **argv) |
| 3818 | { |
| 3819 | int i, j; |
| 3820 | int rc = 1; |
| 3821 | BOOL only_one_at_top; |
| 3822 | patstr *cp; |
| 3823 | fnstr *fn; |
| 3824 | omstr *om; |
| 3825 | const char *locale_from = "--locale"; |
| 3826 | |
| 3827 | #ifdef SUPPORT_PCRE2GREP_JIT |
| 3828 | pcre2_jit_stack *jit_stack = NULL; |
| 3829 | #endif |
| 3830 | |
| 3831 | /* In Windows, stdout is set up as a text stream, which means that \n is |
| 3832 | converted to \r\n. This causes output lines that are copied from the input to |
| 3833 | change from ....\r\n to ....\r\r\n, which is not right. We therefore ensure |
| 3834 | that stdout is a binary stream. Note that this means all other output to stdout |
| 3835 | must use STDOUT_NL to terminate lines. */ |
| 3836 | |
| 3837 | #ifdef WIN32 |
| 3838 | _setmode(_fileno(stdout), _O_BINARY); |
| 3839 | #endif |
| 3840 | |
| 3841 | /* Process the options */ |
| 3842 | |
| 3843 | for (i = 1; i < argc; i++) |
| 3844 | { |
| 3845 | option_item *op = NULL; |
| 3846 | char *option_data = (char *)""; /* default to keep compiler happy */ |
| 3847 | BOOL longop; |
| 3848 | BOOL longopwasequals = FALSE; |
| 3849 | |
| 3850 | if (argv[i][0] != '-') break; |
| 3851 | |
| 3852 | /* If we hit an argument that is just "-", it may be a reference to STDIN, |
| 3853 | but only if we have previously had -e or -f to define the patterns. */ |
| 3854 | |
| 3855 | if (argv[i][1] == 0) |
| 3856 | { |
| 3857 | if (pattern_files != NULL || patterns != NULL) break; |
| 3858 | else pcre2grep_exit(usage(2)); |
| 3859 | } |
| 3860 | |
| 3861 | /* Handle a long name option, or -- to terminate the options */ |
| 3862 | |
| 3863 | if (argv[i][1] == '-') |
| 3864 | { |
| 3865 | char *arg = argv[i] + 2; |
| 3866 | char *argequals = strchr(arg, '='); |
| 3867 | |
| 3868 | if (*arg == 0) /* -- terminates options */ |
| 3869 | { |
| 3870 | i++; |
| 3871 | break; /* out of the options-handling loop */ |
| 3872 | } |
| 3873 | |
| 3874 | longop = TRUE; |
| 3875 | |
| 3876 | /* Some long options have data that follows after =, for example file=name. |
| 3877 | Some options have variations in the long name spelling: specifically, we |
| 3878 | allow "regexp" because GNU grep allows it, though I personally go along |
| 3879 | with Jeffrey Friedl and Larry Wall in preferring "regex" without the "p". |
| 3880 | These options are entered in the table as "regex(p)". Options can be in |
| 3881 | both these categories. */ |
| 3882 | |
| 3883 | for (op = optionlist; op->one_char != 0; op++) |
| 3884 | { |
| 3885 | char *opbra = strchr(op->long_name, '('); |
| 3886 | char *equals = strchr(op->long_name, '='); |
| 3887 | |
| 3888 | /* Handle options with only one spelling of the name */ |
| 3889 | |
| 3890 | if (opbra == NULL) /* Does not contain '(' */ |
| 3891 | { |
| 3892 | if (equals == NULL) /* Not thing=data case */ |
| 3893 | { |
| 3894 | if (strcmp(arg, op->long_name) == 0) break; |
| 3895 | } |
| 3896 | else /* Special case xxx=data */ |
| 3897 | { |
| 3898 | int oplen = (int)(equals - op->long_name); |
| 3899 | int arglen = (argequals == NULL)? |
| 3900 | (int)strlen(arg) : (int)(argequals - arg); |
| 3901 | if (oplen == arglen && strncmp(arg, op->long_name, oplen) == 0) |
| 3902 | { |
| 3903 | option_data = arg + arglen; |
| 3904 | if (*option_data == '=') |
| 3905 | { |
| 3906 | option_data++; |
| 3907 | longopwasequals = TRUE; |
| 3908 | } |
| 3909 | break; |
| 3910 | } |
| 3911 | } |
| 3912 | } |
| 3913 | |
| 3914 | /* Handle options with an alternate spelling of the name */ |
| 3915 | |
| 3916 | else |
| 3917 | { |
| 3918 | char buff1[24]; |
| 3919 | char buff2[24]; |
| 3920 | int ret; |
| 3921 | |
| 3922 | int baselen = (int)(opbra - op->long_name); |
| 3923 | int fulllen = (int)(strchr(op->long_name, ')') - op->long_name + 1); |
| 3924 | int arglen = (argequals == NULL || equals == NULL)? |
| 3925 | (int)strlen(arg) : (int)(argequals - arg); |
| 3926 | |
| 3927 | if ((ret = snprintf(buff1, sizeof(buff1), "%.*s", baselen, op->long_name), |
| 3928 | ret < 0 || ret > (int)sizeof(buff1)) || |
| 3929 | (ret = snprintf(buff2, sizeof(buff2), "%s%.*s", buff1, |
| 3930 | fulllen - baselen - 2, opbra + 1), |
| 3931 | ret < 0 || ret > (int)sizeof(buff2))) |
| 3932 | { |
| 3933 | fprintf(stderr, "pcre2grep: Buffer overflow when parsing %s option\n", |
| 3934 | op->long_name); |
| 3935 | pcre2grep_exit(2); |
| 3936 | } |
| 3937 | |
| 3938 | if (strncmp(arg, buff1, arglen) == 0 || |
| 3939 | strncmp(arg, buff2, arglen) == 0) |
| 3940 | { |
| 3941 | if (equals != NULL && argequals != NULL) |
| 3942 | { |
| 3943 | option_data = argequals; |
| 3944 | if (*option_data == '=') |
| 3945 | { |
| 3946 | option_data++; |
| 3947 | longopwasequals = TRUE; |
| 3948 | } |
| 3949 | } |
| 3950 | break; |
| 3951 | } |
| 3952 | } |
| 3953 | } |
| 3954 | |
| 3955 | if (op->one_char == 0) |
| 3956 | { |
| 3957 | fprintf(stderr, "pcre2grep: Unknown option %s\n", argv[i]); |
| 3958 | pcre2grep_exit(usage(2)); |
| 3959 | } |
| 3960 | } |
| 3961 | |
| 3962 | /* Jeffrey Friedl's debugging harness uses these additional options which |
| 3963 | are not in the right form for putting in the option table because they use |
| 3964 | only one hyphen, yet are more than one character long. By putting them |
| 3965 | separately here, they will not get displayed as part of the help() output, |
| 3966 | but I don't think Jeffrey will care about that. */ |
| 3967 | |
| 3968 | #ifdef JFRIEDL_DEBUG |
| 3969 | else if (strcmp(argv[i], "-pre") == 0) { |
| 3970 | jfriedl_prefix = argv[++i]; |
| 3971 | continue; |
| 3972 | } else if (strcmp(argv[i], "-post") == 0) { |
| 3973 | jfriedl_postfix = argv[++i]; |
| 3974 | continue; |
| 3975 | } else if (strcmp(argv[i], "-XT") == 0) { |
| 3976 | sscanf(argv[++i], "%d", &jfriedl_XT); |
| 3977 | continue; |
| 3978 | } else if (strcmp(argv[i], "-XR") == 0) { |
| 3979 | sscanf(argv[++i], "%d", &jfriedl_XR); |
| 3980 | continue; |
| 3981 | } |
| 3982 | #endif |
| 3983 | |
| 3984 | |
| 3985 | /* One-char options; many that have no data may be in a single argument; we |
| 3986 | continue till we hit the last one or one that needs data. */ |
| 3987 | |
| 3988 | else |
| 3989 | { |
| 3990 | char *s = argv[i] + 1; |
| 3991 | longop = FALSE; |
| 3992 | |
| 3993 | while (*s != 0) |
| 3994 | { |
| 3995 | for (op = optionlist; op->one_char != 0; op++) |
| 3996 | { |
| 3997 | if (*s == op->one_char) break; |
| 3998 | } |
| 3999 | if (op->one_char == 0) |
| 4000 | { |
| 4001 | fprintf(stderr, "pcre2grep: Unknown option letter '%c' in \"%s\"\n", |
| 4002 | *s, argv[i]); |
| 4003 | pcre2grep_exit(usage(2)); |
| 4004 | } |
| 4005 | |
| 4006 | option_data = s+1; |
| 4007 | |
| 4008 | /* Break out if this is the last character in the string; it's handled |
| 4009 | below like a single multi-char option. */ |
| 4010 | |
| 4011 | if (*option_data == 0) break; |
| 4012 | |
| 4013 | /* Check for a single-character option that has data: OP_OP_NUMBER(S) |
| 4014 | are used for ones that either have a numerical number or defaults, i.e. |
| 4015 | the data is optional. If a digit follows, there is data; if not, carry on |
| 4016 | with other single-character options in the same string. */ |
| 4017 | |
| 4018 | if (op->type == OP_OP_NUMBER || op->type == OP_OP_NUMBERS) |
| 4019 | { |
| 4020 | if (isdigit((unsigned char)s[1])) break; |
| 4021 | } |
| 4022 | else /* Check for an option with data */ |
| 4023 | { |
| 4024 | if (op->type != OP_NODATA) break; |
| 4025 | } |
| 4026 | |
| 4027 | /* Handle a single-character option with no data, then loop for the |
| 4028 | next character in the string. */ |
| 4029 | |
| 4030 | pcre2_options = handle_option(*s++, pcre2_options); |
| 4031 | } |
| 4032 | } |
| 4033 | |
| 4034 | /* At this point we should have op pointing to a matched option. If the type |
| 4035 | is NO_DATA, it means that there is no data, and the option might set |
| 4036 | something in the PCRE options. */ |
| 4037 | |
| 4038 | if (op->type == OP_NODATA) |
| 4039 | { |
| 4040 | pcre2_options = handle_option(op->one_char, pcre2_options); |
| 4041 | continue; |
| 4042 | } |
| 4043 | |
| 4044 | /* If the option type is OP_OP_STRING or OP_OP_NUMBER(S), it's an option that |
| 4045 | either has a value or defaults to something. It cannot have data in a |
| 4046 | separate item. At the moment, the only such options are "colo(u)r", |
| 4047 | "only-matching", and Jeffrey Friedl's special -S debugging option. */ |
| 4048 | |
| 4049 | if (*option_data == 0 && |
| 4050 | (op->type == OP_OP_STRING || op->type == OP_OP_NUMBER || |
| 4051 | op->type == OP_OP_NUMBERS)) |
| 4052 | { |
| 4053 | switch (op->one_char) |
| 4054 | { |
| 4055 | case N_COLOUR: |
| 4056 | colour_option = "auto"; |
| 4057 | break; |
| 4058 | |
| 4059 | case 'o': |
| 4060 | only_matching_last = add_number(0, only_matching_last); |
| 4061 | if (only_matching == NULL) only_matching = only_matching_last; |
| 4062 | break; |
| 4063 | |
| 4064 | #ifdef JFRIEDL_DEBUG |
| 4065 | case 'S': |
| 4066 | S_arg = 0; |
| 4067 | break; |
| 4068 | #endif |
| 4069 | } |
| 4070 | continue; |
| 4071 | } |
| 4072 | |
| 4073 | /* Otherwise, find the data string for the option. */ |
| 4074 | |
| 4075 | if (*option_data == 0) |
| 4076 | { |
| 4077 | if (i >= argc - 1 || longopwasequals) |
| 4078 | { |
| 4079 | fprintf(stderr, "pcre2grep: Data missing after %s\n", argv[i]); |
| 4080 | pcre2grep_exit(usage(2)); |
| 4081 | } |
| 4082 | option_data = argv[++i]; |
| 4083 | } |
| 4084 | |
| 4085 | /* If the option type is OP_OP_NUMBERS, the value is a number that is to be |
| 4086 | added to a chain of numbers. */ |
| 4087 | |
| 4088 | if (op->type == OP_OP_NUMBERS) |
| 4089 | { |
| 4090 | unsigned long int n = decode_number(option_data, op, longop); |
| 4091 | omdatastr *omd = (omdatastr *)op->dataptr; |
| 4092 | *(omd->lastptr) = add_number((int)n, *(omd->lastptr)); |
| 4093 | if (*(omd->anchor) == NULL) *(omd->anchor) = *(omd->lastptr); |
| 4094 | } |
| 4095 | |
| 4096 | /* If the option type is OP_PATLIST, it's the -e option, or one of the |
| 4097 | include/exclude options, which can be called multiple times to create lists |
| 4098 | of patterns. */ |
| 4099 | |
| 4100 | else if (op->type == OP_PATLIST) |
| 4101 | { |
| 4102 | patdatastr *pd = (patdatastr *)op->dataptr; |
| 4103 | *(pd->lastptr) = add_pattern(option_data, (PCRE2_SIZE)strlen(option_data), |
| 4104 | *(pd->lastptr)); |
| 4105 | if (*(pd->lastptr) == NULL) goto EXIT2; |
| 4106 | if (*(pd->anchor) == NULL) *(pd->anchor) = *(pd->lastptr); |
| 4107 | } |
| 4108 | |
| 4109 | /* If the option type is OP_FILELIST, it's one of the options that names a |
| 4110 | file. */ |
| 4111 | |
| 4112 | else if (op->type == OP_FILELIST) |
| 4113 | { |
| 4114 | fndatastr *fd = (fndatastr *)op->dataptr; |
| 4115 | fn = (fnstr *)malloc(sizeof(fnstr)); |
| 4116 | if (fn == NULL) |
| 4117 | { |
| 4118 | fprintf(stderr, "pcre2grep: malloc failed\n"); |
| 4119 | goto EXIT2; |
| 4120 | } |
| 4121 | fn->next = NULL; |
| 4122 | fn->name = option_data; |
| 4123 | if (*(fd->anchor) == NULL) |
| 4124 | *(fd->anchor) = fn; |
| 4125 | else |
| 4126 | (*(fd->lastptr))->next = fn; |
| 4127 | *(fd->lastptr) = fn; |
| 4128 | } |
| 4129 | |
| 4130 | /* Handle OP_BINARY_FILES */ |
| 4131 | |
| 4132 | else if (op->type == OP_BINFILES) |
| 4133 | { |
| 4134 | if (strcmp(option_data, "binary") == 0) |
| 4135 | binary_files = BIN_BINARY; |
| 4136 | else if (strcmp(option_data, "without-match") == 0) |
| 4137 | binary_files = BIN_NOMATCH; |
| 4138 | else if (strcmp(option_data, "text") == 0) |
| 4139 | binary_files = BIN_TEXT; |
| 4140 | else |
| 4141 | { |
| 4142 | fprintf(stderr, "pcre2grep: unknown value \"%s\" for binary-files\n", |
| 4143 | option_data); |
| 4144 | pcre2grep_exit(usage(2)); |
| 4145 | } |
| 4146 | } |
| 4147 | |
| 4148 | /* Otherwise, deal with a single string or numeric data value. */ |
| 4149 | |
| 4150 | else if (op->type != OP_NUMBER && op->type != OP_U32NUMBER && |
| 4151 | op->type != OP_OP_NUMBER && op->type != OP_SIZE) |
| 4152 | { |
| 4153 | *((char **)op->dataptr) = option_data; |
| 4154 | } |
| 4155 | else |
| 4156 | { |
| 4157 | unsigned long int n = decode_number(option_data, op, longop); |
| 4158 | if (op->type == OP_U32NUMBER) *((uint32_t *)op->dataptr) = n; |
| 4159 | else if (op->type == OP_SIZE) *((PCRE2_SIZE *)op->dataptr) = n; |
| 4160 | else *((int *)op->dataptr) = n; |
| 4161 | } |
| 4162 | } |
| 4163 | |
| 4164 | /* Options have been decoded. If -C was used, its value is used as a default |
| 4165 | for -A and -B. */ |
| 4166 | |
| 4167 | if (both_context > 0) |
| 4168 | { |
| 4169 | if (after_context == 0) after_context = both_context; |
| 4170 | if (before_context == 0) before_context = both_context; |
| 4171 | } |
| 4172 | |
| 4173 | /* Only one of --only-matching, --output, --file-offsets, or --line-offsets is |
| 4174 | permitted. They display, each in their own way, only the data that has matched. |
| 4175 | */ |
| 4176 | |
| 4177 | only_matching_count = (only_matching != NULL) + (output_text != NULL) + |
| 4178 | file_offsets + line_offsets; |
| 4179 | |
| 4180 | if (only_matching_count > 1) |
| 4181 | { |
| 4182 | fprintf(stderr, "pcre2grep: Cannot mix --only-matching, --output, " |
| 4183 | "--file-offsets and/or --line-offsets\n"); |
| 4184 | pcre2grep_exit(usage(2)); |
| 4185 | } |
| 4186 | |
| 4187 | |
| 4188 | /* Check that there is a big enough ovector for all -o settings. */ |
| 4189 | |
| 4190 | for (om = only_matching; om != NULL; om = om->next) |
| 4191 | { |
| 4192 | int n = om->groupnum; |
| 4193 | if (n > (int)capture_max) |
| 4194 | { |
| 4195 | fprintf(stderr, "pcre2grep: Requested group %d cannot be captured.\n", n); |
| 4196 | fprintf(stderr, "pcre2grep: Use --om-capture to increase the size of the capture vector.\n"); |
| 4197 | goto EXIT2; |
| 4198 | } |
| 4199 | } |
| 4200 | |
| 4201 | /* Check the text supplied to --output for errors. */ |
| 4202 | |
| 4203 | if (output_text != NULL && |
| 4204 | !syntax_check_output_text((PCRE2_SPTR)output_text, FALSE)) |
| 4205 | goto EXIT2; |
| 4206 | |
| 4207 | /* Set up default compile and match contexts and a match data block. */ |
| 4208 | |
| 4209 | offset_size = capture_max + 1; |
| 4210 | compile_context = pcre2_compile_context_create(NULL); |
| 4211 | match_context = pcre2_match_context_create(NULL); |
| 4212 | match_data = pcre2_match_data_create(offset_size, NULL); |
| 4213 | offsets = pcre2_get_ovector_pointer(match_data); |
| 4214 | |
| 4215 | /* If string (script) callouts are supported, set up the callout processing |
| 4216 | function. */ |
| 4217 | |
| 4218 | #ifdef SUPPORT_PCRE2GREP_CALLOUT |
| 4219 | pcre2_set_callout(match_context, pcre2grep_callout, NULL); |
| 4220 | #endif |
| 4221 | |
| 4222 | /* Put limits into the match data block. */ |
| 4223 | |
| 4224 | if (heap_limit != PCRE2_UNSET) pcre2_set_heap_limit(match_context, heap_limit); |
| 4225 | if (match_limit > 0) pcre2_set_match_limit(match_context, match_limit); |
| 4226 | if (depth_limit > 0) pcre2_set_depth_limit(match_context, depth_limit); |
| 4227 | |
| 4228 | /* If a locale has not been provided as an option, see if the LC_CTYPE or |
| 4229 | LC_ALL environment variable is set, and if so, use it. */ |
| 4230 | |
| 4231 | if (locale == NULL) |
| 4232 | { |
| 4233 | locale = getenv("LC_ALL"); |
| 4234 | locale_from = "LC_ALL"; |
| 4235 | } |
| 4236 | |
| 4237 | if (locale == NULL) |
| 4238 | { |
| 4239 | locale = getenv("LC_CTYPE"); |
| 4240 | locale_from = "LC_CTYPE"; |
| 4241 | } |
| 4242 | |
| 4243 | /* If a locale is set, use it to generate the tables the PCRE needs. Passing |
| 4244 | NULL to pcre2_maketables() means that malloc() is used to get the memory. */ |
| 4245 | |
| 4246 | if (locale != NULL) |
| 4247 | { |
| 4248 | if (setlocale(LC_CTYPE, locale) == NULL) |
| 4249 | { |
| 4250 | fprintf(stderr, "pcre2grep: Failed to set locale %s (obtained from %s)\n", |
| 4251 | locale, locale_from); |
| 4252 | goto EXIT2; |
| 4253 | } |
| 4254 | character_tables = pcre2_maketables(NULL); |
| 4255 | pcre2_set_character_tables(compile_context, character_tables); |
| 4256 | } |
| 4257 | |
| 4258 | /* Sort out colouring */ |
| 4259 | |
| 4260 | if (colour_option != NULL && strcmp(colour_option, "never") != 0) |
| 4261 | { |
| 4262 | if (strcmp(colour_option, "always") == 0) |
| 4263 | #ifdef WIN32 |
| 4264 | do_ansi = !is_stdout_tty(), |
| 4265 | #endif |
| 4266 | do_colour = TRUE; |
| 4267 | else if (strcmp(colour_option, "auto") == 0) do_colour = is_stdout_tty(); |
| 4268 | else |
| 4269 | { |
| 4270 | fprintf(stderr, "pcre2grep: Unknown colour setting \"%s\"\n", |
| 4271 | colour_option); |
| 4272 | goto EXIT2; |
| 4273 | } |
| 4274 | if (do_colour) |
| 4275 | { |
| 4276 | char *cs = getenv("PCRE2GREP_COLOUR"); |
| 4277 | if (cs == NULL) cs = getenv("PCRE2GREP_COLOR"); |
| 4278 | if (cs == NULL) cs = getenv("PCREGREP_COLOUR"); |
| 4279 | if (cs == NULL) cs = getenv("PCREGREP_COLOR"); |
| 4280 | if (cs == NULL) cs = parse_grep_colors(getenv("GREP_COLORS")); |
| 4281 | if (cs == NULL) cs = getenv("GREP_COLOR"); |
| 4282 | if (cs != NULL) |
| 4283 | { |
| 4284 | if (strspn(cs, ";0123456789") == strlen(cs)) colour_string = cs; |
| 4285 | } |
| 4286 | #ifdef WIN32 |
| 4287 | init_colour_output(); |
| 4288 | #endif |
| 4289 | } |
| 4290 | } |
| 4291 | |
| 4292 | /* Sort out a newline setting. */ |
| 4293 | |
| 4294 | if (newline_arg != NULL) |
| 4295 | { |
| 4296 | for (endlinetype = 1; endlinetype < (int)(sizeof(newlines)/sizeof(char *)); |
| 4297 | endlinetype++) |
| 4298 | { |
| 4299 | if (strcmpic(newline_arg, newlines[endlinetype]) == 0) break; |
| 4300 | } |
| 4301 | if (endlinetype < (int)(sizeof(newlines)/sizeof(char *))) |
| 4302 | pcre2_set_newline(compile_context, endlinetype); |
| 4303 | else |
| 4304 | { |
| 4305 | fprintf(stderr, "pcre2grep: Invalid newline specifier \"%s\"\n", |
| 4306 | newline_arg); |
| 4307 | goto EXIT2; |
| 4308 | } |
| 4309 | } |
| 4310 | |
| 4311 | /* Find default newline convention */ |
| 4312 | |
| 4313 | else |
| 4314 | { |
| 4315 | (void)pcre2_config(PCRE2_CONFIG_NEWLINE, &endlinetype); |
| 4316 | } |
| 4317 | |
| 4318 | /* Interpret the text values for -d and -D */ |
| 4319 | |
| 4320 | if (dee_option != NULL) |
| 4321 | { |
| 4322 | if (strcmp(dee_option, "read") == 0) dee_action = dee_READ; |
| 4323 | else if (strcmp(dee_option, "recurse") == 0) dee_action = dee_RECURSE; |
| 4324 | else if (strcmp(dee_option, "skip") == 0) dee_action = dee_SKIP; |
| 4325 | else |
| 4326 | { |
| 4327 | fprintf(stderr, "pcre2grep: Invalid value \"%s\" for -d\n", dee_option); |
| 4328 | goto EXIT2; |
| 4329 | } |
| 4330 | } |
| 4331 | |
| 4332 | if (DEE_option != NULL) |
| 4333 | { |
| 4334 | if (strcmp(DEE_option, "read") == 0) DEE_action = DEE_READ; |
| 4335 | else if (strcmp(DEE_option, "skip") == 0) DEE_action = DEE_SKIP; |
| 4336 | else |
| 4337 | { |
| 4338 | fprintf(stderr, "pcre2grep: Invalid value \"%s\" for -D\n", DEE_option); |
| 4339 | goto EXIT2; |
| 4340 | } |
| 4341 | } |
| 4342 | |
| 4343 | /* Set the extra options */ |
| 4344 | |
| 4345 | (void)pcre2_set_compile_extra_options(compile_context, extra_options); |
| 4346 | |
| 4347 | /* Check the values for Jeffrey Friedl's debugging options. */ |
| 4348 | |
| 4349 | #ifdef JFRIEDL_DEBUG |
| 4350 | if (S_arg > 9) |
| 4351 | { |
| 4352 | fprintf(stderr, "pcre2grep: bad value for -S option\n"); |
| 4353 | return 2; |
| 4354 | } |
| 4355 | if (jfriedl_XT != 0 || jfriedl_XR != 0) |
| 4356 | { |
| 4357 | if (jfriedl_XT == 0) jfriedl_XT = 1; |
| 4358 | if (jfriedl_XR == 0) jfriedl_XR = 1; |
| 4359 | } |
| 4360 | #endif |
| 4361 | |
| 4362 | /* If use_jit is set, check whether JIT is available. If not, do not try |
| 4363 | to use JIT. */ |
| 4364 | |
| 4365 | if (use_jit) |
| 4366 | { |
| 4367 | uint32_t answer; |
| 4368 | (void)pcre2_config(PCRE2_CONFIG_JIT, &answer); |
| 4369 | if (!answer) use_jit = FALSE; |
| 4370 | } |
| 4371 | |
| 4372 | /* Get memory for the main buffer. */ |
| 4373 | |
| 4374 | if (bufthird <= 0) |
| 4375 | { |
| 4376 | fprintf(stderr, "pcre2grep: --buffer-size must be greater than zero\n"); |
| 4377 | goto EXIT2; |
| 4378 | } |
| 4379 | |
| 4380 | bufsize = 3*bufthird; |
| 4381 | main_buffer = (char *)malloc(bufsize); |
| 4382 | |
| 4383 | if (main_buffer == NULL) |
| 4384 | { |
| 4385 | fprintf(stderr, "pcre2grep: malloc failed\n"); |
| 4386 | goto EXIT2; |
| 4387 | } |
| 4388 | |
| 4389 | /* If no patterns were provided by -e, and there are no files provided by -f, |
| 4390 | the first argument is the one and only pattern, and it must exist. */ |
| 4391 | |
| 4392 | if (patterns == NULL && pattern_files == NULL) |
| 4393 | { |
| 4394 | if (i >= argc) return usage(2); |
| 4395 | patterns = patterns_last = add_pattern(argv[i], (PCRE2_SIZE)strlen(argv[i]), |
| 4396 | NULL); |
| 4397 | i++; |
| 4398 | if (patterns == NULL) goto EXIT2; |
| 4399 | } |
| 4400 | |
| 4401 | /* Compile the patterns that were provided on the command line, either by |
| 4402 | multiple uses of -e or as a single unkeyed pattern. We cannot do this until |
| 4403 | after all the command-line options are read so that we know which PCRE options |
| 4404 | to use. When -F is used, compile_pattern() may add another block into the |
| 4405 | chain, so we must not access the next pointer till after the compile. */ |
| 4406 | |
| 4407 | for (j = 1, cp = patterns; cp != NULL; j++, cp = cp->next) |
| 4408 | { |
| 4409 | if (!compile_pattern(cp, pcre2_options, FALSE, "command-line", |
| 4410 | (j == 1 && patterns->next == NULL)? 0 : j)) |
| 4411 | goto EXIT2; |
| 4412 | } |
| 4413 | |
| 4414 | /* Read and compile the regular expressions that are provided in files. */ |
| 4415 | |
| 4416 | for (fn = pattern_files; fn != NULL; fn = fn->next) |
| 4417 | { |
| 4418 | if (!read_pattern_file(fn->name, &patterns, &patterns_last)) goto EXIT2; |
| 4419 | } |
| 4420 | |
| 4421 | /* Unless JIT has been explicitly disabled, arrange a stack for it to use. */ |
| 4422 | |
| 4423 | #ifdef SUPPORT_PCRE2GREP_JIT |
| 4424 | if (use_jit) |
| 4425 | { |
| 4426 | jit_stack = pcre2_jit_stack_create(32*1024, 1024*1024, NULL); |
| 4427 | if (jit_stack != NULL ) |
| 4428 | pcre2_jit_stack_assign(match_context, NULL, jit_stack); |
| 4429 | } |
| 4430 | #endif |
| 4431 | |
| 4432 | /* -F, -w, and -x do not apply to include or exclude patterns, so we must |
| 4433 | adjust the options. */ |
| 4434 | |
| 4435 | pcre2_options &= ~PCRE2_LITERAL; |
| 4436 | (void)pcre2_set_compile_extra_options(compile_context, 0); |
| 4437 | |
| 4438 | /* If there are include or exclude patterns read from the command line, compile |
| 4439 | them. */ |
| 4440 | |
| 4441 | for (j = 0; j < 4; j++) |
| 4442 | { |
| 4443 | int k; |
| 4444 | for (k = 1, cp = *(incexlist[j]); cp != NULL; k++, cp = cp->next) |
| 4445 | { |
| 4446 | if (!compile_pattern(cp, pcre2_options, FALSE, incexname[j], |
| 4447 | (k == 1 && cp->next == NULL)? 0 : k)) |
| 4448 | goto EXIT2; |
| 4449 | } |
| 4450 | } |
| 4451 | |
| 4452 | /* Read and compile include/exclude patterns from files. */ |
| 4453 | |
| 4454 | for (fn = include_from; fn != NULL; fn = fn->next) |
| 4455 | { |
| 4456 | if (!read_pattern_file(fn->name, &include_patterns, &include_patterns_last)) |
| 4457 | goto EXIT2; |
| 4458 | } |
| 4459 | |
| 4460 | for (fn = exclude_from; fn != NULL; fn = fn->next) |
| 4461 | { |
| 4462 | if (!read_pattern_file(fn->name, &exclude_patterns, &exclude_patterns_last)) |
| 4463 | goto EXIT2; |
| 4464 | } |
| 4465 | |
| 4466 | /* If there are no files that contain lists of files to search, and there are |
| 4467 | no file arguments, search stdin, and then exit. */ |
| 4468 | |
| 4469 | if (file_lists == NULL && i >= argc) |
| 4470 | { |
| 4471 | rc = pcre2grep(stdin, FR_PLAIN, stdin_name, |
| 4472 | (filenames > FN_DEFAULT)? stdin_name : NULL); |
| 4473 | goto EXIT; |
| 4474 | } |
| 4475 | |
| 4476 | /* If any files that contains a list of files to search have been specified, |
| 4477 | read them line by line and search the given files. */ |
| 4478 | |
| 4479 | for (fn = file_lists; fn != NULL; fn = fn->next) |
| 4480 | { |
| 4481 | char buffer[FNBUFSIZ]; |
| 4482 | FILE *fl; |
| 4483 | if (strcmp(fn->name, "-") == 0) fl = stdin; else |
| 4484 | { |
| 4485 | fl = fopen(fn->name, "rb"); |
| 4486 | if (fl == NULL) |
| 4487 | { |
| 4488 | fprintf(stderr, "pcre2grep: Failed to open %s: %s\n", fn->name, |
| 4489 | strerror(errno)); |
| 4490 | goto EXIT2; |
| 4491 | } |
| 4492 | } |
| 4493 | while (fgets(buffer, sizeof(buffer), fl) != NULL) |
| 4494 | { |
| 4495 | int frc; |
| 4496 | char *end = buffer + (int)strlen(buffer); |
| 4497 | while (end > buffer && isspace(end[-1])) end--; |
| 4498 | *end = 0; |
| 4499 | if (*buffer != 0) |
| 4500 | { |
| 4501 | frc = grep_or_recurse(buffer, dee_action == dee_RECURSE, FALSE); |
| 4502 | if (frc > 1) rc = frc; |
| 4503 | else if (frc == 0 && rc == 1) rc = 0; |
| 4504 | } |
| 4505 | } |
| 4506 | if (fl != stdin) fclose(fl); |
| 4507 | } |
| 4508 | |
| 4509 | /* After handling file-list, work through remaining arguments. Pass in the fact |
| 4510 | that there is only one argument at top level - this suppresses the file name if |
| 4511 | the argument is not a directory and filenames are not otherwise forced. */ |
| 4512 | |
| 4513 | only_one_at_top = i == argc - 1 && file_lists == NULL; |
| 4514 | |
| 4515 | for (; i < argc; i++) |
| 4516 | { |
| 4517 | int frc = grep_or_recurse(argv[i], dee_action == dee_RECURSE, |
| 4518 | only_one_at_top); |
| 4519 | if (frc > 1) rc = frc; |
| 4520 | else if (frc == 0 && rc == 1) rc = 0; |
| 4521 | } |
| 4522 | |
| 4523 | #ifdef SUPPORT_PCRE2GREP_CALLOUT |
| 4524 | /* If separating builtin echo callouts by implicit newline, add one more for |
| 4525 | the final item. */ |
| 4526 | |
| 4527 | if (om_separator != NULL && strcmp(om_separator, STDOUT_NL) == 0) |
| 4528 | fprintf(stdout, STDOUT_NL); |
| 4529 | #endif |
| 4530 | |
| 4531 | /* Show the total number of matches if requested, but not if only one file's |
| 4532 | count was printed. */ |
| 4533 | |
| 4534 | if (show_total_count && counts_printed != 1 && filenames != FN_NOMATCH_ONLY) |
| 4535 | { |
| 4536 | if (counts_printed != 0 && filenames >= FN_DEFAULT) |
| 4537 | fprintf(stdout, "TOTAL:"); |
| 4538 | fprintf(stdout, "%lu" STDOUT_NL, total_count); |
| 4539 | } |
| 4540 | |
| 4541 | EXIT: |
| 4542 | #ifdef SUPPORT_PCRE2GREP_JIT |
| 4543 | pcre2_jit_free_unused_memory(NULL); |
| 4544 | if (jit_stack != NULL) pcre2_jit_stack_free(jit_stack); |
| 4545 | #endif |
| 4546 | |
| 4547 | free(main_buffer); |
| 4548 | if (character_tables != NULL) pcre2_maketables_free(NULL, character_tables); |
| 4549 | |
| 4550 | pcre2_compile_context_free(compile_context); |
| 4551 | pcre2_match_context_free(match_context); |
| 4552 | pcre2_match_data_free(match_data); |
| 4553 | |
| 4554 | free_pattern_chain(patterns); |
| 4555 | free_pattern_chain(include_patterns); |
| 4556 | free_pattern_chain(include_dir_patterns); |
| 4557 | free_pattern_chain(exclude_patterns); |
| 4558 | free_pattern_chain(exclude_dir_patterns); |
| 4559 | |
| 4560 | free_file_chain(exclude_from); |
| 4561 | free_file_chain(include_from); |
| 4562 | free_file_chain(pattern_files); |
| 4563 | free_file_chain(file_lists); |
| 4564 | |
| 4565 | while (only_matching != NULL) |
| 4566 | { |
| 4567 | omstr *this = only_matching; |
| 4568 | only_matching = this->next; |
| 4569 | free(this); |
| 4570 | } |
| 4571 | |
| 4572 | pcre2grep_exit(rc); |
| 4573 | |
| 4574 | EXIT2: |
| 4575 | rc = 2; |
| 4576 | goto EXIT; |
| 4577 | } |
| 4578 | |
| 4579 | /* End of pcre2grep */ |