Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 1 | /*********************************************************** |
Guido van Rossum | 6d023c9 | 1995-01-04 19:12:13 +0000 | [diff] [blame] | 2 | Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam, |
| 3 | The Netherlands. |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 4 | |
| 5 | All Rights Reserved |
| 6 | |
Guido van Rossum | d266eb4 | 1996-10-25 14:44:06 +0000 | [diff] [blame] | 7 | Permission to use, copy, modify, and distribute this software and its |
| 8 | documentation for any purpose and without fee is hereby granted, |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 9 | provided that the above copyright notice appear in all copies and that |
Guido van Rossum | d266eb4 | 1996-10-25 14:44:06 +0000 | [diff] [blame] | 10 | both that copyright notice and this permission notice appear in |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 11 | supporting documentation, and that the names of Stichting Mathematisch |
Guido van Rossum | d266eb4 | 1996-10-25 14:44:06 +0000 | [diff] [blame] | 12 | Centrum or CWI or Corporation for National Research Initiatives or |
| 13 | CNRI not be used in advertising or publicity pertaining to |
| 14 | distribution of the software without specific, written prior |
| 15 | permission. |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 16 | |
Guido van Rossum | d266eb4 | 1996-10-25 14:44:06 +0000 | [diff] [blame] | 17 | While CWI is the initial source for this software, a modified version |
| 18 | is made available by the Corporation for National Research Initiatives |
| 19 | (CNRI) at the Internet address ftp://ftp.python.org. |
| 20 | |
| 21 | STICHTING MATHEMATISCH CENTRUM AND CNRI DISCLAIM ALL WARRANTIES WITH |
| 22 | REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF |
| 23 | MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH |
| 24 | CENTRUM OR CNRI BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL |
| 25 | DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR |
| 26 | PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
| 27 | TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR |
| 28 | PERFORMANCE OF THIS SOFTWARE. |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 29 | |
| 30 | ******************************************************************/ |
| 31 | |
| 32 | /* Python interpreter top-level routines, including init/exit */ |
| 33 | |
| 34 | #include "allobjects.h" |
| 35 | |
| 36 | #include "grammar.h" |
| 37 | #include "node.h" |
| 38 | #include "parsetok.h" |
| 39 | #include "graminit.h" |
Guido van Rossum | befa14f | 1995-09-18 21:42:42 +0000 | [diff] [blame] | 40 | #undef argument /* Avoid conflict on Mac */ |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 41 | #include "errcode.h" |
| 42 | #include "sysmodule.h" |
Guido van Rossum | 6135a87 | 1995-01-09 17:53:26 +0000 | [diff] [blame] | 43 | #include "bltinmodule.h" |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 44 | #include "compile.h" |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 45 | #include "eval.h" |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 46 | #include "ceval.h" |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 47 | #include "import.h" |
Guido van Rossum | fdef271 | 1994-09-14 13:31:04 +0000 | [diff] [blame] | 48 | #include "marshal.h" |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 49 | |
Guido van Rossum | 80bb965 | 1996-12-05 23:27:02 +0000 | [diff] [blame] | 50 | #ifdef HAVE_UNISTD_H |
| 51 | #include <unistd.h> |
| 52 | #endif |
| 53 | |
Guido van Rossum | a110aa6 | 1994-08-29 12:50:44 +0000 | [diff] [blame] | 54 | #ifdef HAVE_SIGNAL_H |
Guido van Rossum | a9e7dc1 | 1992-10-18 18:53:57 +0000 | [diff] [blame] | 55 | #include <signal.h> |
Guido van Rossum | a9e7dc1 | 1992-10-18 18:53:57 +0000 | [diff] [blame] | 56 | #endif |
| 57 | |
Guido van Rossum | 9b38a14 | 1996-09-11 23:12:24 +0000 | [diff] [blame] | 58 | #ifdef MS_WIN32 |
Guido van Rossum | a44823b | 1995-03-14 15:01:17 +0000 | [diff] [blame] | 59 | #undef BYTE |
Guido van Rossum | 4f1c59b | 1996-04-09 02:37:03 +0000 | [diff] [blame] | 60 | #undef arglist |
Guido van Rossum | a44823b | 1995-03-14 15:01:17 +0000 | [diff] [blame] | 61 | #include "windows.h" |
| 62 | #endif |
| 63 | |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 64 | extern char *getpythonpath(); |
| 65 | |
| 66 | extern grammar gram; /* From graminit.c */ |
| 67 | |
Guido van Rossum | b73cc04 | 1993-11-01 16:28:59 +0000 | [diff] [blame] | 68 | /* Forward */ |
Guido van Rossum | 6135a87 | 1995-01-09 17:53:26 +0000 | [diff] [blame] | 69 | static void initmain PROTO((void)); |
Guido van Rossum | a110aa6 | 1994-08-29 12:50:44 +0000 | [diff] [blame] | 70 | static object *run_err_node PROTO((node *n, char *filename, |
Guido van Rossum | b73cc04 | 1993-11-01 16:28:59 +0000 | [diff] [blame] | 71 | object *globals, object *locals)); |
| 72 | static object *run_node PROTO((node *n, char *filename, |
| 73 | object *globals, object *locals)); |
Guido van Rossum | 262e124 | 1995-02-07 15:30:45 +0000 | [diff] [blame] | 74 | static object *run_pyc_file PROTO((FILE *fp, char *filename, |
| 75 | object *globals, object *locals)); |
Guido van Rossum | a110aa6 | 1994-08-29 12:50:44 +0000 | [diff] [blame] | 76 | static void err_input PROTO((perrdetail *)); |
Guido van Rossum | b376a4a | 1993-11-23 17:53:17 +0000 | [diff] [blame] | 77 | static void initsigs PROTO((void)); |
Guido van Rossum | a9e7dc1 | 1992-10-18 18:53:57 +0000 | [diff] [blame] | 78 | |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 79 | int debugging; /* Needed by parser.c */ |
| 80 | int verbose; /* Needed by import.c */ |
Guido van Rossum | a110aa6 | 1994-08-29 12:50:44 +0000 | [diff] [blame] | 81 | int suppress_print; /* Needed by ceval.c */ |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 82 | |
| 83 | /* Initialize all */ |
| 84 | |
| 85 | void |
| 86 | initall() |
| 87 | { |
| 88 | static int inited; |
| 89 | |
| 90 | if (inited) |
| 91 | return; |
| 92 | inited = 1; |
| 93 | |
| 94 | initimport(); |
| 95 | |
Guido van Rossum | a110aa6 | 1994-08-29 12:50:44 +0000 | [diff] [blame] | 96 | /* Modules '__builtin__' and 'sys' are initialized here, |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 97 | they are needed by random bits of the interpreter. |
| 98 | All other modules are optional and are initialized |
| 99 | when they are first imported. */ |
| 100 | |
| 101 | initbuiltin(); /* Also initializes builtin exceptions */ |
| 102 | initsys(); |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 103 | |
| 104 | setpythonpath(getpythonpath()); |
Guido van Rossum | a9e7dc1 | 1992-10-18 18:53:57 +0000 | [diff] [blame] | 105 | |
| 106 | initsigs(); /* Signal handling stuff, including initintr() */ |
Guido van Rossum | 6135a87 | 1995-01-09 17:53:26 +0000 | [diff] [blame] | 107 | |
| 108 | initmain(); |
| 109 | } |
| 110 | |
| 111 | /* Create __main__ module */ |
| 112 | |
| 113 | static void |
| 114 | initmain() |
| 115 | { |
| 116 | object *m, *d; |
| 117 | m = add_module("__main__"); |
| 118 | if (m == NULL) |
| 119 | fatal("can't create __main__ module"); |
| 120 | d = getmoduledict(m); |
| 121 | if (dictlookup(d, "__builtins__") == NULL) { |
Guido van Rossum | 94390ec | 1995-01-12 11:37:57 +0000 | [diff] [blame] | 122 | if (dictinsert(d, "__builtins__", getbuiltins())) |
Guido van Rossum | 6135a87 | 1995-01-09 17:53:26 +0000 | [diff] [blame] | 123 | fatal("can't add __builtins__ to __main__"); |
| 124 | } |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 125 | } |
| 126 | |
| 127 | /* Parse input from a file and execute it */ |
| 128 | |
| 129 | int |
| 130 | run(fp, filename) |
| 131 | FILE *fp; |
| 132 | char *filename; |
| 133 | { |
| 134 | if (filename == NULL) |
| 135 | filename = "???"; |
| 136 | if (isatty((int)fileno(fp))) |
| 137 | return run_tty_loop(fp, filename); |
| 138 | else |
| 139 | return run_script(fp, filename); |
| 140 | } |
| 141 | |
| 142 | int |
| 143 | run_tty_loop(fp, filename) |
| 144 | FILE *fp; |
| 145 | char *filename; |
| 146 | { |
| 147 | object *v; |
| 148 | int ret; |
| 149 | v = sysget("ps1"); |
| 150 | if (v == NULL) { |
| 151 | sysset("ps1", v = newstringobject(">>> ")); |
| 152 | XDECREF(v); |
| 153 | } |
| 154 | v = sysget("ps2"); |
| 155 | if (v == NULL) { |
| 156 | sysset("ps2", v = newstringobject("... ")); |
| 157 | XDECREF(v); |
| 158 | } |
| 159 | for (;;) { |
| 160 | ret = run_tty_1(fp, filename); |
Guido van Rossum | aae0d32 | 1996-05-22 16:35:33 +0000 | [diff] [blame] | 161 | #ifdef Py_REF_DEBUG |
Guido van Rossum | 6f9e433 | 1995-03-29 16:57:48 +0000 | [diff] [blame] | 162 | fprintf(stderr, "[%ld refs]\n", _Py_RefTotal); |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 163 | #endif |
| 164 | if (ret == E_EOF) |
| 165 | return 0; |
| 166 | /* |
| 167 | if (ret == E_NOMEM) |
| 168 | return -1; |
| 169 | */ |
| 170 | } |
| 171 | } |
| 172 | |
| 173 | int |
| 174 | run_tty_1(fp, filename) |
| 175 | FILE *fp; |
| 176 | char *filename; |
| 177 | { |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 178 | object *m, *d, *v, *w; |
| 179 | node *n; |
Guido van Rossum | a110aa6 | 1994-08-29 12:50:44 +0000 | [diff] [blame] | 180 | perrdetail err; |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 181 | char *ps1, *ps2; |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 182 | v = sysget("ps1"); |
| 183 | w = sysget("ps2"); |
| 184 | if (v != NULL && is_stringobject(v)) { |
| 185 | INCREF(v); |
| 186 | ps1 = getstringvalue(v); |
| 187 | } |
| 188 | else { |
| 189 | v = NULL; |
| 190 | ps1 = ""; |
| 191 | } |
| 192 | if (w != NULL && is_stringobject(w)) { |
| 193 | INCREF(w); |
| 194 | ps2 = getstringvalue(w); |
| 195 | } |
| 196 | else { |
| 197 | w = NULL; |
| 198 | ps2 = ""; |
| 199 | } |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 200 | BGN_SAVE |
Guido van Rossum | a110aa6 | 1994-08-29 12:50:44 +0000 | [diff] [blame] | 201 | n = parsefile(fp, filename, &gram, single_input, ps1, ps2, &err); |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 202 | END_SAVE |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 203 | XDECREF(v); |
| 204 | XDECREF(w); |
Guido van Rossum | a110aa6 | 1994-08-29 12:50:44 +0000 | [diff] [blame] | 205 | if (n == NULL) { |
| 206 | if (err.error == E_EOF) { |
| 207 | if (err.text) |
| 208 | free(err.text); |
| 209 | return E_EOF; |
| 210 | } |
| 211 | err_input(&err); |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 212 | print_error(); |
Guido van Rossum | a110aa6 | 1994-08-29 12:50:44 +0000 | [diff] [blame] | 213 | return err.error; |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 214 | } |
| 215 | m = add_module("__main__"); |
| 216 | if (m == NULL) |
| 217 | return -1; |
| 218 | d = getmoduledict(m); |
| 219 | v = run_node(n, filename, d, d); |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 220 | if (v == NULL) { |
| 221 | print_error(); |
| 222 | return -1; |
| 223 | } |
| 224 | DECREF(v); |
Guido van Rossum | 6d023c9 | 1995-01-04 19:12:13 +0000 | [diff] [blame] | 225 | flushline(); |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 226 | return 0; |
| 227 | } |
| 228 | |
| 229 | int |
| 230 | run_script(fp, filename) |
| 231 | FILE *fp; |
| 232 | char *filename; |
| 233 | { |
| 234 | object *m, *d, *v; |
Guido van Rossum | fdef271 | 1994-09-14 13:31:04 +0000 | [diff] [blame] | 235 | char *ext; |
| 236 | |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 237 | m = add_module("__main__"); |
| 238 | if (m == NULL) |
| 239 | return -1; |
| 240 | d = getmoduledict(m); |
Guido van Rossum | fdef271 | 1994-09-14 13:31:04 +0000 | [diff] [blame] | 241 | ext = filename + strlen(filename) - 4; |
Jack Jansen | bd06e96 | 1995-02-13 11:44:56 +0000 | [diff] [blame] | 242 | #ifdef macintosh |
| 243 | /* On a mac, we also assume a pyc file for types 'PYC ' and 'APPL' */ |
| 244 | if ( strcmp(ext, ".pyc") == 0 || getfiletype(filename) == 'PYC ' || |
| 245 | getfiletype(filename) == 'APPL' ) { |
| 246 | #else |
Guido van Rossum | fdef271 | 1994-09-14 13:31:04 +0000 | [diff] [blame] | 247 | if ( strcmp(ext, ".pyc") == 0 ) { |
Jack Jansen | bd06e96 | 1995-02-13 11:44:56 +0000 | [diff] [blame] | 248 | #endif /* macintosh */ |
Guido van Rossum | fdef271 | 1994-09-14 13:31:04 +0000 | [diff] [blame] | 249 | /* Try to run a pyc file. First, re-open in binary */ |
Jack Jansen | e00637b | 1994-12-14 12:58:37 +0000 | [diff] [blame] | 250 | /* Don't close, done in main: fclose(fp); */ |
Guido van Rossum | fdef271 | 1994-09-14 13:31:04 +0000 | [diff] [blame] | 251 | if( (fp = fopen(filename, "rb")) == NULL ) { |
| 252 | fprintf(stderr, "python: Can't reopen .pyc file\n"); |
| 253 | return -1; |
| 254 | } |
| 255 | v = run_pyc_file(fp, filename, d, d); |
| 256 | } else { |
| 257 | v = run_file(fp, filename, file_input, d, d); |
| 258 | } |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 259 | if (v == NULL) { |
| 260 | print_error(); |
| 261 | return -1; |
| 262 | } |
| 263 | DECREF(v); |
Guido van Rossum | 6d023c9 | 1995-01-04 19:12:13 +0000 | [diff] [blame] | 264 | flushline(); |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 265 | return 0; |
| 266 | } |
| 267 | |
| 268 | int |
| 269 | run_command(command) |
| 270 | char *command; |
| 271 | { |
| 272 | object *m, *d, *v; |
| 273 | m = add_module("__main__"); |
| 274 | if (m == NULL) |
| 275 | return -1; |
| 276 | d = getmoduledict(m); |
| 277 | v = run_string(command, file_input, d, d); |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 278 | if (v == NULL) { |
| 279 | print_error(); |
| 280 | return -1; |
| 281 | } |
| 282 | DECREF(v); |
Guido van Rossum | 6d023c9 | 1995-01-04 19:12:13 +0000 | [diff] [blame] | 283 | flushline(); |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 284 | return 0; |
| 285 | } |
| 286 | |
| 287 | void |
| 288 | print_error() |
| 289 | { |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 290 | object *exception, *v, *tb, *f; |
| 291 | err_fetch(&exception, &v, &tb); |
Guido van Rossum | 6d023c9 | 1995-01-04 19:12:13 +0000 | [diff] [blame] | 292 | flushline(); |
Guido van Rossum | 527c264 | 1995-03-30 11:01:44 +0000 | [diff] [blame] | 293 | fflush(stdout); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 294 | if (exception == NULL) |
| 295 | fatal("print_error called but no exception"); |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 296 | if (exception == SystemExit) { |
| 297 | if (v == NULL || v == None) |
| 298 | goaway(0); |
| 299 | if (is_intobject(v)) |
| 300 | goaway((int)getintvalue(v)); |
| 301 | else { |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 302 | /* OK to use real stderr here */ |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 303 | printobject(v, stderr, PRINT_RAW); |
| 304 | fprintf(stderr, "\n"); |
| 305 | goaway(1); |
| 306 | } |
| 307 | } |
| 308 | sysset("last_type", exception); |
| 309 | sysset("last_value", v); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 310 | sysset("last_traceback", tb); |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 311 | f = sysget("stderr"); |
| 312 | if (f == NULL) |
| 313 | fprintf(stderr, "lost sys.stderr\n"); |
| 314 | else { |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 315 | tb_print(tb, f); |
Guido van Rossum | a110aa6 | 1994-08-29 12:50:44 +0000 | [diff] [blame] | 316 | if (exception == SyntaxError) { |
| 317 | object *message; |
| 318 | char *filename, *text; |
| 319 | int lineno, offset; |
| 320 | if (!getargs(v, "(O(ziiz))", &message, |
| 321 | &filename, &lineno, &offset, &text)) |
| 322 | err_clear(); |
| 323 | else { |
| 324 | char buf[10]; |
| 325 | writestring(" File \"", f); |
| 326 | if (filename == NULL) |
| 327 | writestring("<string>", f); |
| 328 | else |
| 329 | writestring(filename, f); |
| 330 | writestring("\", line ", f); |
| 331 | sprintf(buf, "%d", lineno); |
| 332 | writestring(buf, f); |
| 333 | writestring("\n", f); |
| 334 | if (text != NULL) { |
Guido van Rossum | 798199d | 1994-09-19 08:08:50 +0000 | [diff] [blame] | 335 | char *nl; |
| 336 | if (offset > 0 && |
| 337 | offset == strlen(text)) |
| 338 | offset--; |
| 339 | for (;;) { |
| 340 | nl = strchr(text, '\n'); |
| 341 | if (nl == NULL || |
| 342 | nl-text >= offset) |
| 343 | break; |
| 344 | offset -= (nl+1-text); |
| 345 | text = nl+1; |
| 346 | } |
Guido van Rossum | a110aa6 | 1994-08-29 12:50:44 +0000 | [diff] [blame] | 347 | while (*text == ' ' || *text == '\t') { |
| 348 | text++; |
| 349 | offset--; |
| 350 | } |
| 351 | writestring(" ", f); |
| 352 | writestring(text, f); |
| 353 | if (*text == '\0' || |
| 354 | text[strlen(text)-1] != '\n') |
| 355 | writestring("\n", f); |
| 356 | writestring(" ", f); |
| 357 | offset--; |
| 358 | while (offset > 0) { |
| 359 | writestring(" ", f); |
| 360 | offset--; |
| 361 | } |
| 362 | writestring("^\n", f); |
| 363 | } |
| 364 | INCREF(message); |
| 365 | DECREF(v); |
| 366 | v = message; |
| 367 | } |
| 368 | } |
Guido van Rossum | 262e124 | 1995-02-07 15:30:45 +0000 | [diff] [blame] | 369 | if (is_classobject(exception)) { |
| 370 | object* className = ((classobject*)exception)->cl_name; |
| 371 | if (className == NULL) |
| 372 | writestring("<unknown>", f); |
| 373 | else { |
| 374 | if (writeobject(className, f, PRINT_RAW) != 0) |
| 375 | err_clear(); |
| 376 | } |
| 377 | } else { |
| 378 | if (writeobject(exception, f, PRINT_RAW) != 0) |
| 379 | err_clear(); |
| 380 | } |
Guido van Rossum | 3165fe6 | 1992-09-25 21:59:05 +0000 | [diff] [blame] | 381 | if (v != NULL && v != None) { |
| 382 | writestring(": ", f); |
| 383 | if (writeobject(v, f, PRINT_RAW) != 0) |
| 384 | err_clear(); |
| 385 | } |
| 386 | writestring("\n", f); |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 387 | } |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 388 | XDECREF(exception); |
| 389 | XDECREF(v); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 390 | XDECREF(tb); |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 391 | } |
| 392 | |
| 393 | object * |
| 394 | run_string(str, start, globals, locals) |
| 395 | char *str; |
| 396 | int start; |
Guido van Rossum | 5b72218 | 1993-03-30 17:46:03 +0000 | [diff] [blame] | 397 | object *globals, *locals; |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 398 | { |
Guido van Rossum | a110aa6 | 1994-08-29 12:50:44 +0000 | [diff] [blame] | 399 | return run_err_node(parse_string(str, start), |
| 400 | "<string>", globals, locals); |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 401 | } |
| 402 | |
| 403 | object * |
| 404 | run_file(fp, filename, start, globals, locals) |
| 405 | FILE *fp; |
| 406 | char *filename; |
| 407 | int start; |
Guido van Rossum | 5b72218 | 1993-03-30 17:46:03 +0000 | [diff] [blame] | 408 | object *globals, *locals; |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 409 | { |
Guido van Rossum | a110aa6 | 1994-08-29 12:50:44 +0000 | [diff] [blame] | 410 | return run_err_node(parse_file(fp, filename, start), |
| 411 | filename, globals, locals); |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 412 | } |
| 413 | |
Guido van Rossum | f1dc566 | 1993-07-05 10:31:29 +0000 | [diff] [blame] | 414 | static object * |
Guido van Rossum | a110aa6 | 1994-08-29 12:50:44 +0000 | [diff] [blame] | 415 | run_err_node(n, filename, globals, locals) |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 416 | node *n; |
| 417 | char *filename; |
Guido van Rossum | 5b72218 | 1993-03-30 17:46:03 +0000 | [diff] [blame] | 418 | object *globals, *locals; |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 419 | { |
Guido van Rossum | a110aa6 | 1994-08-29 12:50:44 +0000 | [diff] [blame] | 420 | if (n == NULL) |
| 421 | return NULL; |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 422 | return run_node(n, filename, globals, locals); |
| 423 | } |
| 424 | |
Guido van Rossum | f1dc566 | 1993-07-05 10:31:29 +0000 | [diff] [blame] | 425 | static object * |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 426 | run_node(n, filename, globals, locals) |
| 427 | node *n; |
| 428 | char *filename; |
Guido van Rossum | 5b72218 | 1993-03-30 17:46:03 +0000 | [diff] [blame] | 429 | object *globals, *locals; |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 430 | { |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 431 | codeobject *co; |
| 432 | object *v; |
| 433 | co = compile(n, filename); |
| 434 | freetree(n); |
| 435 | if (co == NULL) |
| 436 | return NULL; |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 437 | v = eval_code(co, globals, locals); |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 438 | DECREF(co); |
| 439 | return v; |
| 440 | } |
| 441 | |
Guido van Rossum | 8ae87c0 | 1995-01-26 00:40:38 +0000 | [diff] [blame] | 442 | static object * |
Guido van Rossum | fdef271 | 1994-09-14 13:31:04 +0000 | [diff] [blame] | 443 | run_pyc_file(fp, filename, globals, locals) |
| 444 | FILE *fp; |
| 445 | char *filename; |
| 446 | object *globals, *locals; |
| 447 | { |
| 448 | codeobject *co; |
| 449 | object *v; |
| 450 | long magic; |
| 451 | long get_pyc_magic(); |
| 452 | |
| 453 | magic = rd_long(fp); |
| 454 | if (magic != get_pyc_magic()) { |
| 455 | err_setstr(RuntimeError, |
| 456 | "Bad magic number in .pyc file"); |
| 457 | return NULL; |
| 458 | } |
| 459 | (void) rd_long(fp); |
| 460 | v = rd_object(fp); |
| 461 | fclose(fp); |
| 462 | if (v == NULL || !is_codeobject(v)) { |
| 463 | XDECREF(v); |
| 464 | err_setstr(RuntimeError, |
| 465 | "Bad code object in .pyc file"); |
| 466 | return NULL; |
| 467 | } |
| 468 | co = (codeobject *)v; |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 469 | v = eval_code(co, globals, locals); |
Guido van Rossum | fdef271 | 1994-09-14 13:31:04 +0000 | [diff] [blame] | 470 | DECREF(co); |
| 471 | return v; |
| 472 | } |
| 473 | |
| 474 | object * |
Guido van Rossum | 5b72218 | 1993-03-30 17:46:03 +0000 | [diff] [blame] | 475 | compile_string(str, filename, start) |
| 476 | char *str; |
| 477 | char *filename; |
| 478 | int start; |
| 479 | { |
| 480 | node *n; |
Guido van Rossum | 5b72218 | 1993-03-30 17:46:03 +0000 | [diff] [blame] | 481 | codeobject *co; |
Guido van Rossum | a110aa6 | 1994-08-29 12:50:44 +0000 | [diff] [blame] | 482 | n = parse_string(str, start); |
| 483 | if (n == NULL) |
Guido van Rossum | 5b72218 | 1993-03-30 17:46:03 +0000 | [diff] [blame] | 484 | return NULL; |
Guido van Rossum | 5b72218 | 1993-03-30 17:46:03 +0000 | [diff] [blame] | 485 | co = compile(n, filename); |
| 486 | freetree(n); |
| 487 | return (object *)co; |
| 488 | } |
| 489 | |
Guido van Rossum | a110aa6 | 1994-08-29 12:50:44 +0000 | [diff] [blame] | 490 | /* Simplified interface to parsefile -- return node or set exception */ |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 491 | |
Guido van Rossum | a110aa6 | 1994-08-29 12:50:44 +0000 | [diff] [blame] | 492 | node * |
| 493 | parse_file(fp, filename, start) |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 494 | FILE *fp; |
| 495 | char *filename; |
| 496 | int start; |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 497 | { |
Guido van Rossum | a110aa6 | 1994-08-29 12:50:44 +0000 | [diff] [blame] | 498 | node *n; |
| 499 | perrdetail err; |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 500 | BGN_SAVE |
Guido van Rossum | a110aa6 | 1994-08-29 12:50:44 +0000 | [diff] [blame] | 501 | n = parsefile(fp, filename, &gram, start, |
| 502 | (char *)0, (char *)0, &err); |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 503 | END_SAVE |
Guido van Rossum | a110aa6 | 1994-08-29 12:50:44 +0000 | [diff] [blame] | 504 | if (n == NULL) |
| 505 | err_input(&err); |
| 506 | return n; |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 507 | } |
| 508 | |
Guido van Rossum | a110aa6 | 1994-08-29 12:50:44 +0000 | [diff] [blame] | 509 | /* Simplified interface to parsestring -- return node or set exception */ |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 510 | |
Guido van Rossum | a110aa6 | 1994-08-29 12:50:44 +0000 | [diff] [blame] | 511 | node * |
| 512 | parse_string(str, start) |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 513 | char *str; |
| 514 | int start; |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 515 | { |
Guido van Rossum | a110aa6 | 1994-08-29 12:50:44 +0000 | [diff] [blame] | 516 | node *n; |
| 517 | perrdetail err; |
| 518 | n = parsestring(str, &gram, start, &err); |
| 519 | if (n == NULL) |
| 520 | err_input(&err); |
| 521 | return n; |
| 522 | } |
| 523 | |
| 524 | /* Set the error appropriate to the given input error code (see errcode.h) */ |
| 525 | |
| 526 | static void |
| 527 | err_input(err) |
| 528 | perrdetail *err; |
| 529 | { |
| 530 | object *v, *w; |
| 531 | char *msg = NULL; |
| 532 | v = mkvalue("(ziiz)", err->filename, |
| 533 | err->lineno, err->offset, err->text); |
| 534 | if (err->text != NULL) { |
| 535 | free(err->text); |
| 536 | err->text = NULL; |
| 537 | } |
| 538 | switch (err->error) { |
| 539 | case E_SYNTAX: |
| 540 | msg = "invalid syntax"; |
| 541 | break; |
| 542 | case E_TOKEN: |
| 543 | msg = "invalid token"; |
| 544 | |
| 545 | break; |
| 546 | case E_INTR: |
| 547 | err_set(KeyboardInterrupt); |
| 548 | return; |
| 549 | case E_NOMEM: |
| 550 | err_nomem(); |
| 551 | return; |
| 552 | case E_EOF: |
| 553 | msg = "unexpected EOF while parsing"; |
| 554 | break; |
| 555 | default: |
| 556 | fprintf(stderr, "error=%d\n", err->error); |
| 557 | msg = "unknown parsing error"; |
| 558 | break; |
| 559 | } |
| 560 | w = mkvalue("(sO)", msg, v); |
| 561 | XDECREF(v); |
| 562 | err_setval(SyntaxError, w); |
| 563 | XDECREF(w); |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 564 | } |
| 565 | |
| 566 | /* Print fatal error message and abort */ |
| 567 | |
| 568 | void |
| 569 | fatal(msg) |
| 570 | char *msg; |
| 571 | { |
Guido van Rossum | 83dd6c3 | 1994-09-29 09:38:33 +0000 | [diff] [blame] | 572 | fprintf(stderr, "Fatal Python error: %s\n", msg); |
Guido van Rossum | 8ae87c0 | 1995-01-26 00:40:38 +0000 | [diff] [blame] | 573 | #ifdef macintosh |
| 574 | for (;;); |
| 575 | #endif |
Guido van Rossum | 9b38a14 | 1996-09-11 23:12:24 +0000 | [diff] [blame] | 576 | #ifdef MS_WIN32 |
Guido van Rossum | a44823b | 1995-03-14 15:01:17 +0000 | [diff] [blame] | 577 | OutputDebugString("Fatal Python error:"); |
| 578 | OutputDebugString(msg); |
| 579 | OutputDebugString("\n"); |
| 580 | #endif |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 581 | abort(); |
| 582 | } |
| 583 | |
| 584 | /* Clean up and exit */ |
| 585 | |
Guido van Rossum | a110aa6 | 1994-08-29 12:50:44 +0000 | [diff] [blame] | 586 | #ifdef WITH_THREAD |
| 587 | #include "thread.h" |
| 588 | int threads_started = 0; /* Set by threadmodule.c and maybe others */ |
Guido van Rossum | f9f2e82 | 1992-08-17 08:59:08 +0000 | [diff] [blame] | 589 | #endif |
| 590 | |
Guido van Rossum | 1662dd5 | 1994-09-07 14:38:28 +0000 | [diff] [blame] | 591 | #define NEXITFUNCS 32 |
| 592 | static void (*exitfuncs[NEXITFUNCS])(); |
| 593 | static int nexitfuncs = 0; |
| 594 | |
| 595 | int Py_AtExit(func) |
| 596 | void (*func) PROTO((void)); |
| 597 | { |
| 598 | if (nexitfuncs >= NEXITFUNCS) |
| 599 | return -1; |
| 600 | exitfuncs[nexitfuncs++] = func; |
| 601 | return 0; |
| 602 | } |
| 603 | |
Guido van Rossum | a110aa6 | 1994-08-29 12:50:44 +0000 | [diff] [blame] | 604 | void |
Guido van Rossum | a9e7dc1 | 1992-10-18 18:53:57 +0000 | [diff] [blame] | 605 | cleanup() |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 606 | { |
Guido van Rossum | 59bff39 | 1992-09-03 20:28:00 +0000 | [diff] [blame] | 607 | object *exitfunc = sysget("exitfunc"); |
| 608 | |
| 609 | if (exitfunc) { |
Guido van Rossum | 59bff39 | 1992-09-03 20:28:00 +0000 | [diff] [blame] | 610 | object *res; |
Guido van Rossum | 1c45ca3 | 1995-10-07 19:14:01 +0000 | [diff] [blame] | 611 | INCREF(exitfunc); |
Guido van Rossum | 59bff39 | 1992-09-03 20:28:00 +0000 | [diff] [blame] | 612 | sysset("exitfunc", (object *)NULL); |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 613 | res = call_object(exitfunc, (object *)NULL); |
Guido van Rossum | 59bff39 | 1992-09-03 20:28:00 +0000 | [diff] [blame] | 614 | if (res == NULL) { |
| 615 | fprintf(stderr, "Error in sys.exitfunc:\n"); |
| 616 | print_error(); |
| 617 | } |
Guido van Rossum | 1c45ca3 | 1995-10-07 19:14:01 +0000 | [diff] [blame] | 618 | DECREF(exitfunc); |
Guido van Rossum | 59bff39 | 1992-09-03 20:28:00 +0000 | [diff] [blame] | 619 | } |
| 620 | |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 621 | flushline(); |
Guido van Rossum | 1662dd5 | 1994-09-07 14:38:28 +0000 | [diff] [blame] | 622 | |
| 623 | while (nexitfuncs > 0) |
| 624 | (*exitfuncs[--nexitfuncs])(); |
Guido van Rossum | a9e7dc1 | 1992-10-18 18:53:57 +0000 | [diff] [blame] | 625 | } |
| 626 | |
Sjoerd Mullender | a9c3c22 | 1993-10-11 12:54:31 +0000 | [diff] [blame] | 627 | #ifdef COUNT_ALLOCS |
| 628 | extern void dump_counts PROTO((void)); |
| 629 | #endif |
| 630 | |
Guido van Rossum | a9e7dc1 | 1992-10-18 18:53:57 +0000 | [diff] [blame] | 631 | void |
| 632 | goaway(sts) |
| 633 | int sts; |
| 634 | { |
| 635 | cleanup(); |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 636 | |
Sjoerd Mullender | a9c3c22 | 1993-10-11 12:54:31 +0000 | [diff] [blame] | 637 | #ifdef COUNT_ALLOCS |
| 638 | dump_counts(); |
| 639 | #endif |
| 640 | |
Guido van Rossum | a110aa6 | 1994-08-29 12:50:44 +0000 | [diff] [blame] | 641 | #ifdef WITH_THREAD |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 642 | |
| 643 | /* Other threads may still be active, so skip most of the |
| 644 | cleanup actions usually done (these are mostly for |
| 645 | debugging anyway). */ |
| 646 | |
Guido van Rossum | df72a65 | 1992-08-12 15:27:32 +0000 | [diff] [blame] | 647 | (void) save_thread(); |
Guido van Rossum | a110aa6 | 1994-08-29 12:50:44 +0000 | [diff] [blame] | 648 | #ifndef NO_EXIT_PROG |
Guido van Rossum | f9f2e82 | 1992-08-17 08:59:08 +0000 | [diff] [blame] | 649 | if (threads_started) |
| 650 | _exit_prog(sts); |
| 651 | else |
| 652 | exit_prog(sts); |
Guido van Rossum | a110aa6 | 1994-08-29 12:50:44 +0000 | [diff] [blame] | 653 | #else /* !NO_EXIT_PROG */ |
| 654 | if (threads_started) |
| 655 | _exit(sts); |
| 656 | else |
| 657 | exit(sts); |
| 658 | #endif /* !NO_EXIT_PROG */ |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 659 | |
Guido van Rossum | a110aa6 | 1994-08-29 12:50:44 +0000 | [diff] [blame] | 660 | #else /* WITH_THREAD */ |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 661 | |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 662 | doneimport(); |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 663 | |
| 664 | err_clear(); |
| 665 | |
Guido van Rossum | aae0d32 | 1996-05-22 16:35:33 +0000 | [diff] [blame] | 666 | #ifdef Py_REF_DEBUG |
Guido van Rossum | 6f9e433 | 1995-03-29 16:57:48 +0000 | [diff] [blame] | 667 | fprintf(stderr, "[%ld refs]\n", _Py_RefTotal); |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 668 | #endif |
| 669 | |
Guido van Rossum | aae0d32 | 1996-05-22 16:35:33 +0000 | [diff] [blame] | 670 | #ifdef Py_TRACE_REFS |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 671 | if (askyesno("Print left references?")) { |
Guido van Rossum | ded690f | 1996-05-24 20:48:31 +0000 | [diff] [blame] | 672 | _Py_PrintReferences(stderr); |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 673 | } |
Guido van Rossum | aae0d32 | 1996-05-22 16:35:33 +0000 | [diff] [blame] | 674 | #endif /* Py_TRACE_REFS */ |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 675 | |
Jack Jansen | 66a8977 | 1995-10-27 13:22:14 +0000 | [diff] [blame] | 676 | #ifdef macintosh |
| 677 | PyMac_Exit(sts); |
| 678 | #else |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 679 | exit(sts); |
Jack Jansen | 66a8977 | 1995-10-27 13:22:14 +0000 | [diff] [blame] | 680 | #endif |
Guido van Rossum | a110aa6 | 1994-08-29 12:50:44 +0000 | [diff] [blame] | 681 | #endif /* WITH_THREAD */ |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 682 | /*NOTREACHED*/ |
| 683 | } |
| 684 | |
Guido van Rossum | a110aa6 | 1994-08-29 12:50:44 +0000 | [diff] [blame] | 685 | #ifdef HAVE_SIGNAL_H |
| 686 | static RETSIGTYPE |
Guido van Rossum | a9e7dc1 | 1992-10-18 18:53:57 +0000 | [diff] [blame] | 687 | sighandler(sig) |
| 688 | int sig; |
| 689 | { |
| 690 | signal(sig, SIG_DFL); /* Don't catch recursive signals */ |
| 691 | cleanup(); /* Do essential clean-up */ |
Guido van Rossum | a110aa6 | 1994-08-29 12:50:44 +0000 | [diff] [blame] | 692 | #ifdef HAVE_GETPID |
Guido van Rossum | a9e7dc1 | 1992-10-18 18:53:57 +0000 | [diff] [blame] | 693 | kill(getpid(), sig); /* Pretend the signal killed us */ |
Guido van Rossum | a110aa6 | 1994-08-29 12:50:44 +0000 | [diff] [blame] | 694 | #else |
| 695 | exit(1); |
| 696 | #endif |
Guido van Rossum | a9e7dc1 | 1992-10-18 18:53:57 +0000 | [diff] [blame] | 697 | /*NOTREACHED*/ |
| 698 | } |
| 699 | #endif |
| 700 | |
Guido van Rossum | f1dc566 | 1993-07-05 10:31:29 +0000 | [diff] [blame] | 701 | static void |
Guido van Rossum | a9e7dc1 | 1992-10-18 18:53:57 +0000 | [diff] [blame] | 702 | initsigs() |
| 703 | { |
Guido van Rossum | a110aa6 | 1994-08-29 12:50:44 +0000 | [diff] [blame] | 704 | RETSIGTYPE (*t)(); |
| 705 | #ifdef HAVE_SIGNAL_H |
| 706 | #ifdef SIGPIPE |
| 707 | signal(SIGPIPE, SIG_IGN); |
Guido van Rossum | a9e7dc1 | 1992-10-18 18:53:57 +0000 | [diff] [blame] | 708 | #endif |
Guido van Rossum | a110aa6 | 1994-08-29 12:50:44 +0000 | [diff] [blame] | 709 | #ifdef SIGHUP |
| 710 | t = signal(SIGHUP, SIG_IGN); |
| 711 | if (t == SIG_DFL) |
| 712 | signal(SIGHUP, sighandler); |
| 713 | else |
| 714 | signal(SIGHUP, t); |
| 715 | #endif |
| 716 | #ifdef SIGTERM |
| 717 | t = signal(SIGTERM, SIG_IGN); |
| 718 | if (t == SIG_DFL) |
| 719 | signal(SIGTERM, sighandler); |
| 720 | else |
| 721 | signal(SIGTERM, t); |
| 722 | #endif |
| 723 | #endif /* HAVE_SIGNAL_H */ |
| 724 | initintr(); /* May imply initsignal() */ |
Guido van Rossum | a9e7dc1 | 1992-10-18 18:53:57 +0000 | [diff] [blame] | 725 | } |
| 726 | |
Guido van Rossum | aae0d32 | 1996-05-22 16:35:33 +0000 | [diff] [blame] | 727 | #ifdef Py_TRACE_REFS |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 728 | /* Ask a yes/no question */ |
| 729 | |
Guido van Rossum | 59bff39 | 1992-09-03 20:28:00 +0000 | [diff] [blame] | 730 | int |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 731 | askyesno(prompt) |
| 732 | char *prompt; |
| 733 | { |
| 734 | char buf[256]; |
| 735 | |
| 736 | printf("%s [ny] ", prompt); |
| 737 | if (fgets(buf, sizeof buf, stdin) == NULL) |
| 738 | return 0; |
| 739 | return buf[0] == 'y' || buf[0] == 'Y'; |
| 740 | } |
| 741 | #endif |
| 742 | |
Guido van Rossum | a110aa6 | 1994-08-29 12:50:44 +0000 | [diff] [blame] | 743 | #ifdef MPW |
Guido van Rossum | 1984f1e | 1992-08-04 12:41:02 +0000 | [diff] [blame] | 744 | |
| 745 | /* Check for file descriptor connected to interactive device. |
| 746 | Pretend that stdin is always interactive, other files never. */ |
| 747 | |
| 748 | int |
| 749 | isatty(fd) |
| 750 | int fd; |
| 751 | { |
| 752 | return fd == fileno(stdin); |
| 753 | } |
| 754 | |
| 755 | #endif |