Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 1 | /* vi: set sw=4 ts=4: */ |
Eric Andersen | 6b6b3f6 | 1999-10-28 16:06:25 +0000 | [diff] [blame] | 2 | /* |
Mark Whitley | 6315ce6 | 2000-07-10 22:55:51 +0000 | [diff] [blame] | 3 | * sed.c - very minimalist version of sed |
Eric Andersen | 6b6b3f6 | 1999-10-28 16:06:25 +0000 | [diff] [blame] | 4 | * |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 5 | * Copyright (C) 1999,2000,2001 by Lineo, inc. and Mark Whitley |
| 6 | * Copyright (C) 1999,2000,2001 by Mark Whitley <markw@codepoet.org> |
Matt Kraai | 5ed78ad | 2002-01-03 21:12:34 +0000 | [diff] [blame] | 7 | * Copyright (C) 2002 Matt Kraai |
Glenn L McGrath | c6992fe | 2004-04-25 05:11:19 +0000 | [diff] [blame] | 8 | * Copyright (C) 2003 by Glenn McGrath <bug1@iinet.net.au> |
Rob Landley | 25d8239 | 2004-04-01 09:23:30 +0000 | [diff] [blame] | 9 | * Copyright (C) 2003,2004 by Rob Landley <rob@landley.net> |
Erik Andersen | 1266a13 | 1999-12-29 22:19:46 +0000 | [diff] [blame] | 10 | * |
Rob Landley | 2b26fd5 | 2006-02-24 02:30:39 +0000 | [diff] [blame] | 11 | * MAINTAINER: Rob Landley <rob@landley.net> |
Bernhard Reutner-Fischer | b7f3973 | 2006-03-01 20:14:16 +0000 | [diff] [blame] | 12 | * |
Rob Landley | e9a7a62 | 2006-09-22 02:52:41 +0000 | [diff] [blame] | 13 | * Licensed under GPL version 2, see file LICENSE in this tarball for details. |
Eric Andersen | 6b6b3f6 | 1999-10-28 16:06:25 +0000 | [diff] [blame] | 14 | */ |
| 15 | |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 16 | /* Code overview. |
| 17 | |
| 18 | Files are laid out to avoid unnecessary function declarations. So for |
| 19 | example, every function add_cmd calls occurs before add_cmd in this file. |
| 20 | |
| 21 | add_cmd() is called on each line of sed command text (from a file or from |
| 22 | the command line). It calls get_address() and parse_cmd_args(). The |
| 23 | resulting sed_cmd_t structures are appended to a linked list |
Rob Landley | e3f5a3f | 2006-05-09 03:53:55 +0000 | [diff] [blame] | 24 | (bbg.sed_cmd_head/bbg.sed_cmd_tail). |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 25 | |
Rob Landley | dcc2866 | 2004-11-25 07:21:47 +0000 | [diff] [blame] | 26 | add_input_file() adds a FILE * to the list of input files. We need to |
Rob Landley | fae1dc8 | 2005-11-20 07:44:35 +0000 | [diff] [blame] | 27 | know all input sources ahead of time to find the last line for the $ match. |
Rob Landley | dcc2866 | 2004-11-25 07:21:47 +0000 | [diff] [blame] | 28 | |
| 29 | process_files() does actual sedding, reading data lines from each input FILE * |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 30 | (which could be stdin) and applying the sed command list (sed_cmd_head) to |
| 31 | each of the resulting lines. |
| 32 | |
| 33 | sed_main() is where external code calls into this, with a command line. |
| 34 | */ |
| 35 | |
| 36 | |
Mark Whitley | 6315ce6 | 2000-07-10 22:55:51 +0000 | [diff] [blame] | 37 | /* |
| 38 | Supported features and commands in this version of sed: |
| 39 | |
| 40 | - comments ('#') |
Mark Whitley | 94074a9 | 2000-07-14 00:00:15 +0000 | [diff] [blame] | 41 | - address matching: num|/matchstr/[,num|/matchstr/|$]command |
| 42 | - commands: (p)rint, (d)elete, (s)ubstitue (with g & I flags) |
| 43 | - edit commands: (a)ppend, (i)nsert, (c)hange |
Mark Whitley | 1f3b9f2 | 2001-05-11 22:27:13 +0000 | [diff] [blame] | 44 | - file commands: (r)ead |
Rob Landley | c63fe91 | 2005-10-30 10:08:13 +0000 | [diff] [blame] | 45 | - backreferences in substitution expressions (\0, \1, \2...\9) |
Glenn L McGrath | f50ce31 | 2003-03-09 15:12:24 +0000 | [diff] [blame] | 46 | - grouped commands: {cmd1;cmd2} |
Glenn L McGrath | bd9b32b | 2003-04-09 01:43:54 +0000 | [diff] [blame] | 47 | - transliteration (y/source-chars/dest-chars/) |
| 48 | - pattern space hold space storing / swapping (g, h, x) |
Rob Landley | 93850a5 | 2005-05-18 06:34:37 +0000 | [diff] [blame] | 49 | - labels / branching (: label, b, t, T) |
Glenn L McGrath | f50ce31 | 2003-03-09 15:12:24 +0000 | [diff] [blame] | 50 | |
Mark Whitley | 6315ce6 | 2000-07-10 22:55:51 +0000 | [diff] [blame] | 51 | (Note: Specifying an address (range) to match is *optional*; commands |
| 52 | default to the whole pattern space if no specific address match was |
| 53 | requested.) |
| 54 | |
Glenn L McGrath | 2570b43 | 2003-09-16 05:25:43 +0000 | [diff] [blame] | 55 | Todo: |
Glenn L McGrath | 2570b43 | 2003-09-16 05:25:43 +0000 | [diff] [blame] | 56 | - Create a wrapper around regex to make libc's regex conform with sed |
Glenn L McGrath | bd9b32b | 2003-04-09 01:43:54 +0000 | [diff] [blame] | 57 | |
Glenn L McGrath | d5eadea | 2003-03-09 02:39:29 +0000 | [diff] [blame] | 58 | Reference http://www.opengroup.org/onlinepubs/007904975/utilities/sed.html |
Mark Whitley | 6315ce6 | 2000-07-10 22:55:51 +0000 | [diff] [blame] | 59 | */ |
| 60 | |
Eric Andersen | 3570a34 | 2000-09-25 21:45:58 +0000 | [diff] [blame] | 61 | #include "busybox.h" |
"Vladimir N. Oleynik" | 23f62fc | 2005-09-14 16:59:11 +0000 | [diff] [blame] | 62 | #include "xregex.h" |
Mark Whitley | 6315ce6 | 2000-07-10 22:55:51 +0000 | [diff] [blame] | 63 | |
Rob Landley | e3f5a3f | 2006-05-09 03:53:55 +0000 | [diff] [blame] | 64 | /* Each sed command turns into one of these structures. */ |
Glenn L McGrath | e7a8bc9 | 2003-03-09 10:23:57 +0000 | [diff] [blame] | 65 | typedef struct sed_cmd_s { |
Denis Vlasenko | d18a3a2 | 2006-10-25 12:46:03 +0000 | [diff] [blame] | 66 | /* Ordered by alignment requirements: currently 36 bytes on x86 */ |
Mark Whitley | 2dc192f | 2000-11-03 19:47:00 +0000 | [diff] [blame] | 67 | |
Denis Vlasenko | d18a3a2 | 2006-10-25 12:46:03 +0000 | [diff] [blame] | 68 | /* address storage */ |
| 69 | regex_t *beg_match; /* sed -e '/match/cmd' */ |
| 70 | regex_t *end_match; /* sed -e '/match/,/end_match/cmd' */ |
| 71 | regex_t *sub_match; /* For 's/sub_match/string/' */ |
| 72 | int beg_line; /* 'sed 1p' 0 == apply commands to all lines */ |
| 73 | int end_line; /* 'sed 1,3p' 0 == one line only. -1 = last line ($) */ |
Bernhard Reutner-Fischer | b7f3973 | 2006-03-01 20:14:16 +0000 | [diff] [blame] | 74 | |
Denis Vlasenko | d18a3a2 | 2006-10-25 12:46:03 +0000 | [diff] [blame] | 75 | FILE *file; /* File (sw) command writes to, -1 for none. */ |
| 76 | char *string; /* Data string for (saicytb) commands. */ |
Glenn L McGrath | fc4cb4d | 2003-04-12 16:10:42 +0000 | [diff] [blame] | 77 | |
Denis Vlasenko | d18a3a2 | 2006-10-25 12:46:03 +0000 | [diff] [blame] | 78 | unsigned short which_match; /* (s) Which match to replace (0 for all) */ |
Glenn L McGrath | fc4cb4d | 2003-04-12 16:10:42 +0000 | [diff] [blame] | 79 | |
Denis Vlasenko | d18a3a2 | 2006-10-25 12:46:03 +0000 | [diff] [blame] | 80 | /* Bitfields (gcc won't group them if we don't) */ |
| 81 | unsigned int invert:1; /* the '!' after the address */ |
| 82 | unsigned int in_match:1; /* Next line also included in match? */ |
Denis Vlasenko | d18a3a2 | 2006-10-25 12:46:03 +0000 | [diff] [blame] | 83 | unsigned int sub_p:1; /* (s) print option */ |
Denis Vlasenko | 1375bc7 | 2006-12-02 20:12:12 +0000 | [diff] [blame] | 84 | |
Denis Vlasenko | 826c85f | 2007-01-28 23:26:15 +0000 | [diff] [blame^] | 85 | // int sw_last_char; /* Last line written by (sw) had no '\n' */ |
Glenn L McGrath | c18ce37 | 2003-09-13 06:57:39 +0000 | [diff] [blame] | 86 | |
Denis Vlasenko | d18a3a2 | 2006-10-25 12:46:03 +0000 | [diff] [blame] | 87 | /* GENERAL FIELDS */ |
| 88 | char cmd; /* The command char: abcdDgGhHilnNpPqrstwxy:={} */ |
| 89 | struct sed_cmd_s *next; /* Next command (linked list, NULL terminated) */ |
Glenn L McGrath | e7a8bc9 | 2003-03-09 10:23:57 +0000 | [diff] [blame] | 90 | } sed_cmd_t; |
Mark Whitley | 6315ce6 | 2000-07-10 22:55:51 +0000 | [diff] [blame] | 91 | |
Eric Andersen | 14f5c8d | 2005-04-16 19:39:00 +0000 | [diff] [blame] | 92 | static const char *const semicolon_whitespace = "; \n\r\t\v"; |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 93 | |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 94 | struct sed_globals { |
Rob Landley | e3f5a3f | 2006-05-09 03:53:55 +0000 | [diff] [blame] | 95 | /* options */ |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 96 | int be_quiet, regex_type; |
Rob Landley | e3f5a3f | 2006-05-09 03:53:55 +0000 | [diff] [blame] | 97 | FILE *nonstdout; |
| 98 | char *outname, *hold_space; |
Glenn L McGrath | bd9b32b | 2003-04-09 01:43:54 +0000 | [diff] [blame] | 99 | |
Rob Landley | e3f5a3f | 2006-05-09 03:53:55 +0000 | [diff] [blame] | 100 | /* List of input files */ |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 101 | int input_file_count, current_input_file; |
Rob Landley | e3f5a3f | 2006-05-09 03:53:55 +0000 | [diff] [blame] | 102 | FILE **input_file_list; |
Eric Andersen | 6b6b3f6 | 1999-10-28 16:06:25 +0000 | [diff] [blame] | 103 | |
Rob Landley | e3f5a3f | 2006-05-09 03:53:55 +0000 | [diff] [blame] | 104 | regmatch_t regmatch[10]; |
| 105 | regex_t *previous_regex_ptr; |
Denis Vlasenko | 9213a9e | 2006-09-17 16:28:10 +0000 | [diff] [blame] | 106 | |
Rob Landley | e3f5a3f | 2006-05-09 03:53:55 +0000 | [diff] [blame] | 107 | /* linked list of sed commands */ |
| 108 | sed_cmd_t sed_cmd_head, *sed_cmd_tail; |
| 109 | |
| 110 | /* Linked list of append lines */ |
| 111 | llist_t *append_head; |
| 112 | |
| 113 | char *add_cmd_line; |
| 114 | |
| 115 | struct pipeline { |
| 116 | char *buf; /* Space to hold string */ |
| 117 | int idx; /* Space used */ |
| 118 | int len; /* Space allocated */ |
| 119 | } pipeline; |
| 120 | } bbg; |
| 121 | |
Glenn L McGrath | bd9b32b | 2003-04-09 01:43:54 +0000 | [diff] [blame] | 122 | |
Bernhard Reutner-Fischer | b7f3973 | 2006-03-01 20:14:16 +0000 | [diff] [blame] | 123 | #if ENABLE_FEATURE_CLEAN_UP |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 124 | static void sed_free_and_close_stuff(void) |
Mark Whitley | 6315ce6 | 2000-07-10 22:55:51 +0000 | [diff] [blame] | 125 | { |
Rob Landley | e3f5a3f | 2006-05-09 03:53:55 +0000 | [diff] [blame] | 126 | sed_cmd_t *sed_cmd = bbg.sed_cmd_head.next; |
Mark Whitley | 6315ce6 | 2000-07-10 22:55:51 +0000 | [diff] [blame] | 127 | |
Rob Landley | 5fc467e | 2006-05-24 17:45:47 +0000 | [diff] [blame] | 128 | llist_free(bbg.append_head, free); |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 129 | |
Glenn L McGrath | 56c633c | 2003-03-28 04:23:23 +0000 | [diff] [blame] | 130 | while (sed_cmd) { |
Glenn L McGrath | bd9b32b | 2003-04-09 01:43:54 +0000 | [diff] [blame] | 131 | sed_cmd_t *sed_cmd_next = sed_cmd->next; |
Mark Whitley | 6315ce6 | 2000-07-10 22:55:51 +0000 | [diff] [blame] | 132 | |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 133 | if (sed_cmd->file) |
Rob Landley | d921b2e | 2006-08-03 15:41:12 +0000 | [diff] [blame] | 134 | xprint_and_close_file(sed_cmd->file); |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 135 | |
Glenn L McGrath | 56c633c | 2003-03-28 04:23:23 +0000 | [diff] [blame] | 136 | if (sed_cmd->beg_match) { |
| 137 | regfree(sed_cmd->beg_match); |
| 138 | free(sed_cmd->beg_match); |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 139 | } |
Glenn L McGrath | 56c633c | 2003-03-28 04:23:23 +0000 | [diff] [blame] | 140 | if (sed_cmd->end_match) { |
| 141 | regfree(sed_cmd->end_match); |
| 142 | free(sed_cmd->end_match); |
Mark Whitley | 6315ce6 | 2000-07-10 22:55:51 +0000 | [diff] [blame] | 143 | } |
Glenn L McGrath | 56c633c | 2003-03-28 04:23:23 +0000 | [diff] [blame] | 144 | if (sed_cmd->sub_match) { |
| 145 | regfree(sed_cmd->sub_match); |
| 146 | free(sed_cmd->sub_match); |
Mark Whitley | 6315ce6 | 2000-07-10 22:55:51 +0000 | [diff] [blame] | 147 | } |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 148 | free(sed_cmd->string); |
Glenn L McGrath | 56c633c | 2003-03-28 04:23:23 +0000 | [diff] [blame] | 149 | free(sed_cmd); |
| 150 | sed_cmd = sed_cmd_next; |
Mark Whitley | 6315ce6 | 2000-07-10 22:55:51 +0000 | [diff] [blame] | 151 | } |
Rob Landley | ce4f0e9 | 2004-10-30 06:54:19 +0000 | [diff] [blame] | 152 | |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 153 | if (bbg.hold_space) free(bbg.hold_space); |
Rob Landley | dcc2866 | 2004-11-25 07:21:47 +0000 | [diff] [blame] | 154 | |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 155 | while (bbg.current_input_file < bbg.input_file_count) |
Rob Landley | e3f5a3f | 2006-05-09 03:53:55 +0000 | [diff] [blame] | 156 | fclose(bbg.input_file_list[bbg.current_input_file++]); |
Mark Whitley | 6315ce6 | 2000-07-10 22:55:51 +0000 | [diff] [blame] | 157 | } |
Denis Vlasenko | 666da5e | 2006-12-26 18:17:42 +0000 | [diff] [blame] | 158 | #else |
| 159 | void sed_free_and_close_stuff(void); |
Mark Whitley | c41e8c8 | 2000-07-12 23:35:21 +0000 | [diff] [blame] | 160 | #endif |
Mark Whitley | 6315ce6 | 2000-07-10 22:55:51 +0000 | [diff] [blame] | 161 | |
Rob Landley | 53302f8 | 2004-02-18 09:54:15 +0000 | [diff] [blame] | 162 | /* If something bad happens during -i operation, delete temp file */ |
| 163 | |
| 164 | static void cleanup_outname(void) |
| 165 | { |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 166 | if (bbg.outname) unlink(bbg.outname); |
Rob Landley | 53302f8 | 2004-02-18 09:54:15 +0000 | [diff] [blame] | 167 | } |
| 168 | |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 169 | /* strdup, replacing "\n" with '\n', and "\delimiter" with 'delimiter' */ |
| 170 | |
Rob Landley | 4795e4e | 2006-07-26 17:25:08 +0000 | [diff] [blame] | 171 | static void parse_escapes(char *dest, char *string, int len, char from, char to) |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 172 | { |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 173 | int i = 0; |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 174 | |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 175 | while (i < len) { |
| 176 | if (string[i] == '\\') { |
| 177 | if (!to || string[i+1] == from) { |
Denis Vlasenko | 4ebaf10 | 2007-01-19 21:33:19 +0000 | [diff] [blame] | 178 | *dest++ = to ? to : string[i+1]; |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 179 | i += 2; |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 180 | continue; |
Denis Vlasenko | 4ebaf10 | 2007-01-19 21:33:19 +0000 | [diff] [blame] | 181 | } |
| 182 | *dest++ = string[i++]; |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 183 | } |
Denis Vlasenko | 4ebaf10 | 2007-01-19 21:33:19 +0000 | [diff] [blame] | 184 | *dest++ = string[i++]; |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 185 | } |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 186 | *dest = 0; |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 187 | } |
| 188 | |
Rob Landley | 4795e4e | 2006-07-26 17:25:08 +0000 | [diff] [blame] | 189 | static char *copy_parsing_escapes(char *string, int len) |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 190 | { |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 191 | char *dest = xmalloc(len + 1); |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 192 | |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 193 | parse_escapes(dest, string, len, 'n', '\n'); |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 194 | return dest; |
| 195 | } |
| 196 | |
| 197 | |
Mark Whitley | 6315ce6 | 2000-07-10 22:55:51 +0000 | [diff] [blame] | 198 | /* |
Eric Andersen | 28b3c53 | 2001-01-02 11:01:31 +0000 | [diff] [blame] | 199 | * index_of_next_unescaped_regexp_delim - walks left to right through a string |
| 200 | * beginning at a specified index and returns the index of the next regular |
Eric Andersen | aff114c | 2004-04-14 17:51:38 +0000 | [diff] [blame] | 201 | * expression delimiter (typically a forward * slash ('/')) not preceded by |
Rob Landley | 4795e4e | 2006-07-26 17:25:08 +0000 | [diff] [blame] | 202 | * a backslash ('\'). A negative delimiter disables square bracket checking. |
Mark Whitley | 6315ce6 | 2000-07-10 22:55:51 +0000 | [diff] [blame] | 203 | */ |
Rob Landley | 4795e4e | 2006-07-26 17:25:08 +0000 | [diff] [blame] | 204 | static int index_of_next_unescaped_regexp_delim(int delimiter, char *str) |
Mark Whitley | 6315ce6 | 2000-07-10 22:55:51 +0000 | [diff] [blame] | 205 | { |
Matt Kraai | a0065d5 | 2001-08-24 14:45:50 +0000 | [diff] [blame] | 206 | int bracket = -1; |
| 207 | int escaped = 0; |
Glenn L McGrath | f01b46d | 2003-03-30 08:02:18 +0000 | [diff] [blame] | 208 | int idx = 0; |
Eric Andersen | c52a6b0 | 2001-11-10 10:49:42 +0000 | [diff] [blame] | 209 | char ch; |
Matt Kraai | a0065d5 | 2001-08-24 14:45:50 +0000 | [diff] [blame] | 210 | |
Rob Landley | 4795e4e | 2006-07-26 17:25:08 +0000 | [diff] [blame] | 211 | if (delimiter < 0) { |
| 212 | bracket--; |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 213 | delimiter = -delimiter; |
Rob Landley | 4795e4e | 2006-07-26 17:25:08 +0000 | [diff] [blame] | 214 | } |
| 215 | |
Glenn L McGrath | 8d6395d | 2003-04-08 11:56:11 +0000 | [diff] [blame] | 216 | for (; (ch = str[idx]); idx++) { |
Rob Landley | 4795e4e | 2006-07-26 17:25:08 +0000 | [diff] [blame] | 217 | if (bracket >= 0) { |
Glenn L McGrath | d4185b0 | 2003-04-11 17:10:23 +0000 | [diff] [blame] | 218 | if (ch == ']' && !(bracket == idx - 1 || (bracket == idx - 2 |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 219 | && str[idx - 1] == '^'))) |
Matt Kraai | a0065d5 | 2001-08-24 14:45:50 +0000 | [diff] [blame] | 220 | bracket = -1; |
| 221 | } else if (escaped) |
| 222 | escaped = 0; |
Eric Andersen | c52a6b0 | 2001-11-10 10:49:42 +0000 | [diff] [blame] | 223 | else if (ch == '\\') |
Matt Kraai | a0065d5 | 2001-08-24 14:45:50 +0000 | [diff] [blame] | 224 | escaped = 1; |
Rob Landley | 4795e4e | 2006-07-26 17:25:08 +0000 | [diff] [blame] | 225 | else if (bracket == -1 && ch == '[') |
Matt Kraai | a0065d5 | 2001-08-24 14:45:50 +0000 | [diff] [blame] | 226 | bracket = idx; |
Glenn L McGrath | 1fb4467 | 2003-03-09 08:44:49 +0000 | [diff] [blame] | 227 | else if (ch == delimiter) |
Mark Whitley | 97562bd | 2000-07-17 20:06:42 +0000 | [diff] [blame] | 228 | return idx; |
| 229 | } |
Mark Whitley | 6315ce6 | 2000-07-10 22:55:51 +0000 | [diff] [blame] | 230 | |
Mark Whitley | 97562bd | 2000-07-17 20:06:42 +0000 | [diff] [blame] | 231 | /* if we make it to here, we've hit the end of the string */ |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 232 | bb_error_msg_and_die("unmatched '%c'", delimiter); |
Mark Whitley | 6315ce6 | 2000-07-10 22:55:51 +0000 | [diff] [blame] | 233 | } |
| 234 | |
Glenn L McGrath | 8aac05b | 2003-09-14 04:06:12 +0000 | [diff] [blame] | 235 | /* |
| 236 | * Returns the index of the third delimiter |
| 237 | */ |
Rob Landley | 4795e4e | 2006-07-26 17:25:08 +0000 | [diff] [blame] | 238 | static int parse_regex_delim(char *cmdstr, char **match, char **replace) |
Glenn L McGrath | f01b46d | 2003-03-30 08:02:18 +0000 | [diff] [blame] | 239 | { |
Rob Landley | 4795e4e | 2006-07-26 17:25:08 +0000 | [diff] [blame] | 240 | char *cmdstr_ptr = cmdstr; |
Glenn L McGrath | f01b46d | 2003-03-30 08:02:18 +0000 | [diff] [blame] | 241 | char delimiter; |
| 242 | int idx = 0; |
| 243 | |
Glenn L McGrath | 8aac05b | 2003-09-14 04:06:12 +0000 | [diff] [blame] | 244 | /* verify that the 's' or 'y' is followed by something. That something |
Glenn L McGrath | f01b46d | 2003-03-30 08:02:18 +0000 | [diff] [blame] | 245 | * (typically a 'slash') is now our regexp delimiter... */ |
Rob Landley | 4795e4e | 2006-07-26 17:25:08 +0000 | [diff] [blame] | 246 | if (*cmdstr == '\0') |
| 247 | bb_error_msg_and_die("bad format in substitution expression"); |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 248 | delimiter = *cmdstr_ptr++; |
Glenn L McGrath | f01b46d | 2003-03-30 08:02:18 +0000 | [diff] [blame] | 249 | |
| 250 | /* save the match string */ |
| 251 | idx = index_of_next_unescaped_regexp_delim(delimiter, cmdstr_ptr); |
Rob Landley | fae1dc8 | 2005-11-20 07:44:35 +0000 | [diff] [blame] | 252 | *match = copy_parsing_escapes(cmdstr_ptr, idx); |
Glenn L McGrath | f01b46d | 2003-03-30 08:02:18 +0000 | [diff] [blame] | 253 | |
| 254 | /* save the replacement string */ |
| 255 | cmdstr_ptr += idx + 1; |
Rob Landley | 4795e4e | 2006-07-26 17:25:08 +0000 | [diff] [blame] | 256 | idx = index_of_next_unescaped_regexp_delim(-delimiter, cmdstr_ptr); |
Rob Landley | fae1dc8 | 2005-11-20 07:44:35 +0000 | [diff] [blame] | 257 | *replace = copy_parsing_escapes(cmdstr_ptr, idx); |
Glenn L McGrath | f01b46d | 2003-03-30 08:02:18 +0000 | [diff] [blame] | 258 | |
Glenn L McGrath | 8d6395d | 2003-04-08 11:56:11 +0000 | [diff] [blame] | 259 | return ((cmdstr_ptr - cmdstr) + idx); |
Glenn L McGrath | f01b46d | 2003-03-30 08:02:18 +0000 | [diff] [blame] | 260 | } |
| 261 | |
Mark Whitley | 6315ce6 | 2000-07-10 22:55:51 +0000 | [diff] [blame] | 262 | /* |
| 263 | * returns the index in the string just past where the address ends. |
| 264 | */ |
Glenn L McGrath | 8d6395d | 2003-04-08 11:56:11 +0000 | [diff] [blame] | 265 | static int get_address(char *my_str, int *linenum, regex_t ** regex) |
Mark Whitley | 6315ce6 | 2000-07-10 22:55:51 +0000 | [diff] [blame] | 266 | { |
Glenn L McGrath | e3e28d3 | 2003-09-15 09:22:04 +0000 | [diff] [blame] | 267 | char *pos = my_str; |
Glenn L McGrath | 8d6395d | 2003-04-08 11:56:11 +0000 | [diff] [blame] | 268 | |
Glenn L McGrath | 8aac05b | 2003-09-14 04:06:12 +0000 | [diff] [blame] | 269 | if (isdigit(*my_str)) { |
| 270 | *linenum = strtol(my_str, &pos, 10); |
Glenn L McGrath | 1fb4467 | 2003-03-09 08:44:49 +0000 | [diff] [blame] | 271 | /* endstr shouldnt ever equal NULL */ |
Glenn L McGrath | 8aac05b | 2003-09-14 04:06:12 +0000 | [diff] [blame] | 272 | } else if (*my_str == '$') { |
Mark Whitley | 0915c4b | 2001-06-11 23:50:06 +0000 | [diff] [blame] | 273 | *linenum = -1; |
Glenn L McGrath | 8aac05b | 2003-09-14 04:06:12 +0000 | [diff] [blame] | 274 | pos++; |
| 275 | } else if (*my_str == '/' || *my_str == '\\') { |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 276 | int next; |
Glenn L McGrath | f01b46d | 2003-03-30 08:02:18 +0000 | [diff] [blame] | 277 | char delimiter; |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 278 | char *temp; |
Glenn L McGrath | 1fb4467 | 2003-03-09 08:44:49 +0000 | [diff] [blame] | 279 | |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 280 | delimiter = '/'; |
| 281 | if (*my_str == '\\') delimiter = *++pos; |
Glenn L McGrath | 8aac05b | 2003-09-14 04:06:12 +0000 | [diff] [blame] | 282 | next = index_of_next_unescaped_regexp_delim(delimiter, ++pos); |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 283 | temp = copy_parsing_escapes(pos, next); |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 284 | *regex = xmalloc(sizeof(regex_t)); |
Rob Landley | e3f5a3f | 2006-05-09 03:53:55 +0000 | [diff] [blame] | 285 | xregcomp(*regex, temp, bbg.regex_type|REG_NEWLINE); |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 286 | free(temp); |
| 287 | /* Move position to next character after last delimiter */ |
Rob Landley | 4795e4e | 2006-07-26 17:25:08 +0000 | [diff] [blame] | 288 | pos += (next+1); |
Mark Whitley | 6315ce6 | 2000-07-10 22:55:51 +0000 | [diff] [blame] | 289 | } |
Glenn L McGrath | 8aac05b | 2003-09-14 04:06:12 +0000 | [diff] [blame] | 290 | return pos - my_str; |
Mark Whitley | 6315ce6 | 2000-07-10 22:55:51 +0000 | [diff] [blame] | 291 | } |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 292 | |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 293 | /* Grab a filename. Whitespace at start is skipped, then goes to EOL. */ |
Rob Landley | 4795e4e | 2006-07-26 17:25:08 +0000 | [diff] [blame] | 294 | static int parse_file_cmd(sed_cmd_t *sed_cmd, char *filecmdstr, char **retval) |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 295 | { |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 296 | int start = 0, idx, hack = 0; |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 297 | |
| 298 | /* Skip whitespace, then grab filename to end of line */ |
| 299 | while (isspace(filecmdstr[start])) start++; |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 300 | idx = start; |
| 301 | while (filecmdstr[idx] && filecmdstr[idx] != '\n') idx++; |
| 302 | |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 303 | /* If lines glued together, put backslash back. */ |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 304 | if (filecmdstr[idx] == '\n') hack = 1; |
| 305 | if (idx == start) |
| 306 | bb_error_msg_and_die("empty filename"); |
Rob Landley | d921b2e | 2006-08-03 15:41:12 +0000 | [diff] [blame] | 307 | *retval = xstrndup(filecmdstr+start, idx-start+hack+1); |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 308 | if (hack) (*retval)[idx] = '\\'; |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 309 | |
| 310 | return idx; |
| 311 | } |
| 312 | |
Rob Landley | 4795e4e | 2006-07-26 17:25:08 +0000 | [diff] [blame] | 313 | static int parse_subst_cmd(sed_cmd_t *sed_cmd, char *substr) |
Mark Whitley | 06f3529 | 2000-07-13 19:58:04 +0000 | [diff] [blame] | 314 | { |
Rob Landley | e3f5a3f | 2006-05-09 03:53:55 +0000 | [diff] [blame] | 315 | int cflags = bbg.regex_type; |
Mark Whitley | 06f3529 | 2000-07-13 19:58:04 +0000 | [diff] [blame] | 316 | char *match; |
| 317 | int idx = 0; |
| 318 | |
| 319 | /* |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 320 | * A substitution command should look something like this: |
| 321 | * s/match/replace/ #gIpw |
Mark Whitley | 0e4cec0 | 2000-08-21 21:29:20 +0000 | [diff] [blame] | 322 | * || | ||| |
Mark Whitley | 06f3529 | 2000-07-13 19:58:04 +0000 | [diff] [blame] | 323 | * mandatory optional |
Mark Whitley | 06f3529 | 2000-07-13 19:58:04 +0000 | [diff] [blame] | 324 | */ |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 325 | idx = parse_regex_delim(substr, &match, &sed_cmd->string); |
Mark Whitley | 06f3529 | 2000-07-13 19:58:04 +0000 | [diff] [blame] | 326 | |
Mark Whitley | 97562bd | 2000-07-17 20:06:42 +0000 | [diff] [blame] | 327 | /* determine the number of back references in the match string */ |
| 328 | /* Note: we compute this here rather than in the do_subst_command() |
| 329 | * function to save processor time, at the expense of a little more memory |
| 330 | * (4 bits) per sed_cmd */ |
Glenn L McGrath | 8d6395d | 2003-04-08 11:56:11 +0000 | [diff] [blame] | 331 | |
Mark Whitley | 06f3529 | 2000-07-13 19:58:04 +0000 | [diff] [blame] | 332 | /* process the flags */ |
Mark Whitley | 70705d7 | 2000-07-14 19:06:30 +0000 | [diff] [blame] | 333 | |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 334 | sed_cmd->which_match = 1; |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 335 | while (substr[++idx]) { |
| 336 | /* Parse match number */ |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 337 | if (isdigit(substr[idx])) { |
| 338 | if (match[0] != '^') { |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 339 | /* Match 0 treated as all, multiple matches we take the last one. */ |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 340 | char *pos = substr + idx; |
| 341 | /* FIXME: error check? */ |
| 342 | sed_cmd->which_match = (unsigned short)strtol(substr+idx, &pos, 10); |
| 343 | idx = pos - substr; |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 344 | } |
| 345 | continue; |
| 346 | } |
Rob Landley | 40ec4ae | 2004-01-04 06:42:14 +0000 | [diff] [blame] | 347 | /* Skip spaces */ |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 348 | if (isspace(substr[idx])) continue; |
Rob Landley | 40ec4ae | 2004-01-04 06:42:14 +0000 | [diff] [blame] | 349 | |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 350 | switch (substr[idx]) { |
Denis Vlasenko | d18a3a2 | 2006-10-25 12:46:03 +0000 | [diff] [blame] | 351 | /* Replace all occurrences */ |
| 352 | case 'g': |
| 353 | if (match[0] != '^') sed_cmd->which_match = 0; |
| 354 | break; |
| 355 | /* Print pattern space */ |
| 356 | case 'p': |
| 357 | sed_cmd->sub_p = 1; |
| 358 | break; |
| 359 | /* Write to file */ |
| 360 | case 'w': |
| 361 | { |
| 362 | char *temp; |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 363 | idx += parse_file_cmd(sed_cmd, substr+idx, &temp); |
Eric Andersen | c7bda1c | 2004-03-15 08:29:22 +0000 | [diff] [blame] | 364 | |
Denis Vlasenko | d18a3a2 | 2006-10-25 12:46:03 +0000 | [diff] [blame] | 365 | break; |
| 366 | } |
| 367 | /* Ignore case (gnu exension) */ |
| 368 | case 'I': |
| 369 | cflags |= REG_ICASE; |
| 370 | break; |
| 371 | /* Comment */ |
| 372 | case '#': |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 373 | while (substr[++idx]) /*skip all*/; |
Denis Vlasenko | d18a3a2 | 2006-10-25 12:46:03 +0000 | [diff] [blame] | 374 | /* Fall through */ |
| 375 | /* End of command */ |
| 376 | case ';': |
| 377 | case '}': |
| 378 | goto out; |
| 379 | default: |
| 380 | bb_error_msg_and_die("bad option in substitution expression"); |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 381 | } |
| 382 | } |
Glenn L McGrath | 2570b43 | 2003-09-16 05:25:43 +0000 | [diff] [blame] | 383 | out: |
Mark Whitley | 97562bd | 2000-07-17 20:06:42 +0000 | [diff] [blame] | 384 | /* compile the match string into a regex */ |
Glenn L McGrath | c1d9507 | 2003-04-08 06:42:45 +0000 | [diff] [blame] | 385 | if (*match != '\0') { |
| 386 | /* If match is empty, we use last regex used at runtime */ |
Denis Vlasenko | b95636c | 2006-12-19 23:36:04 +0000 | [diff] [blame] | 387 | sed_cmd->sub_match = xmalloc(sizeof(regex_t)); |
Glenn L McGrath | c1d9507 | 2003-04-08 06:42:45 +0000 | [diff] [blame] | 388 | xregcomp(sed_cmd->sub_match, match, cflags); |
| 389 | } |
Mark Whitley | 06f3529 | 2000-07-13 19:58:04 +0000 | [diff] [blame] | 390 | free(match); |
Mark Whitley | 70705d7 | 2000-07-14 19:06:30 +0000 | [diff] [blame] | 391 | |
| 392 | return idx; |
Mark Whitley | 06f3529 | 2000-07-13 19:58:04 +0000 | [diff] [blame] | 393 | } |
| 394 | |
Glenn L McGrath | 2971ef1 | 2003-03-18 01:19:23 +0000 | [diff] [blame] | 395 | /* |
| 396 | * Process the commands arguments |
| 397 | */ |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 398 | static char *parse_cmd_args(sed_cmd_t *sed_cmd, char *cmdstr) |
Mark Whitley | 6315ce6 | 2000-07-10 22:55:51 +0000 | [diff] [blame] | 399 | { |
Glenn L McGrath | 2f8a401 | 2003-03-09 02:44:49 +0000 | [diff] [blame] | 400 | /* handle (s)ubstitution command */ |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 401 | if (sed_cmd->cmd == 's') |
| 402 | cmdstr += parse_subst_cmd(sed_cmd, cmdstr); |
Glenn L McGrath | 2f8a401 | 2003-03-09 02:44:49 +0000 | [diff] [blame] | 403 | /* handle edit cmds: (a)ppend, (i)nsert, and (c)hange */ |
| 404 | else if (strchr("aic", sed_cmd->cmd)) { |
| 405 | if ((sed_cmd->end_line || sed_cmd->end_match) && sed_cmd->cmd != 'c') |
Glenn L McGrath | 8d6395d | 2003-04-08 11:56:11 +0000 | [diff] [blame] | 406 | bb_error_msg_and_die |
| 407 | ("only a beginning address can be specified for edit commands"); |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 408 | for (;;) { |
| 409 | if (*cmdstr == '\n' || *cmdstr == '\\') { |
Rob Landley | 25d8239 | 2004-04-01 09:23:30 +0000 | [diff] [blame] | 410 | cmdstr++; |
| 411 | break; |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 412 | } else if (isspace(*cmdstr)) |
| 413 | cmdstr++; |
| 414 | else |
| 415 | break; |
Rob Landley | 25d8239 | 2004-04-01 09:23:30 +0000 | [diff] [blame] | 416 | } |
Rob Landley | d921b2e | 2006-08-03 15:41:12 +0000 | [diff] [blame] | 417 | sed_cmd->string = xstrdup(cmdstr); |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 418 | parse_escapes(sed_cmd->string, sed_cmd->string, strlen(cmdstr), 0, 0); |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 419 | cmdstr += strlen(cmdstr); |
Glenn L McGrath | 2f8a401 | 2003-03-09 02:44:49 +0000 | [diff] [blame] | 420 | /* handle file cmds: (r)ead */ |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 421 | } else if (strchr("rw", sed_cmd->cmd)) { |
Glenn L McGrath | 2f8a401 | 2003-03-09 02:44:49 +0000 | [diff] [blame] | 422 | if (sed_cmd->end_line || sed_cmd->end_match) |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 423 | bb_error_msg_and_die("command only uses one address"); |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 424 | cmdstr += parse_file_cmd(sed_cmd, cmdstr, &sed_cmd->string); |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 425 | if (sed_cmd->cmd == 'w') |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 426 | sed_cmd->file = xfopen(sed_cmd->string, "w"); |
Glenn L McGrath | 961c6c1 | 2003-03-28 04:43:39 +0000 | [diff] [blame] | 427 | /* handle branch commands */ |
Rob Landley | 93850a5 | 2005-05-18 06:34:37 +0000 | [diff] [blame] | 428 | } else if (strchr(":btT", sed_cmd->cmd)) { |
Glenn L McGrath | 961c6c1 | 2003-03-28 04:43:39 +0000 | [diff] [blame] | 429 | int length; |
| 430 | |
Denis Vlasenko | d18a3a2 | 2006-10-25 12:46:03 +0000 | [diff] [blame] | 431 | cmdstr = skip_whitespace(cmdstr); |
Glenn L McGrath | f452356 | 2003-09-14 06:01:14 +0000 | [diff] [blame] | 432 | length = strcspn(cmdstr, semicolon_whitespace); |
| 433 | if (length) { |
Rob Landley | d921b2e | 2006-08-03 15:41:12 +0000 | [diff] [blame] | 434 | sed_cmd->string = xstrndup(cmdstr, length); |
Glenn L McGrath | f452356 | 2003-09-14 06:01:14 +0000 | [diff] [blame] | 435 | cmdstr += length; |
| 436 | } |
Glenn L McGrath | 961c6c1 | 2003-03-28 04:43:39 +0000 | [diff] [blame] | 437 | } |
Glenn L McGrath | f01b46d | 2003-03-30 08:02:18 +0000 | [diff] [blame] | 438 | /* translation command */ |
| 439 | else if (sed_cmd->cmd == 'y') { |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 440 | char *match, *replace; |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 441 | int i = cmdstr[0]; |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 442 | |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 443 | cmdstr += parse_regex_delim(cmdstr, &match, &replace)+1; |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 444 | /* \n already parsed, but \delimiter needs unescaping. */ |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 445 | parse_escapes(match, match, strlen(match), i, i); |
| 446 | parse_escapes(replace, replace, strlen(replace), i, i); |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 447 | |
Rob Landley | 9ffd423 | 2006-05-21 18:30:35 +0000 | [diff] [blame] | 448 | sed_cmd->string = xzalloc((strlen(match) + 1) * 2); |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 449 | for (i = 0; match[i] && replace[i]; i++) { |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 450 | sed_cmd->string[i*2] = match[i]; |
| 451 | sed_cmd->string[i*2+1] = replace[i]; |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 452 | } |
| 453 | free(match); |
| 454 | free(replace); |
Glenn L McGrath | f01b46d | 2003-03-30 08:02:18 +0000 | [diff] [blame] | 455 | } |
Glenn L McGrath | 2971ef1 | 2003-03-18 01:19:23 +0000 | [diff] [blame] | 456 | /* if it wasnt a single-letter command that takes no arguments |
| 457 | * then it must be an invalid command. |
| 458 | */ |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 459 | else if (strchr("dDgGhHlnNpPqx={}", sed_cmd->cmd) == 0) { |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 460 | bb_error_msg_and_die("unsupported command %c", sed_cmd->cmd); |
Mark Whitley | 1f3b9f2 | 2001-05-11 22:27:13 +0000 | [diff] [blame] | 461 | } |
Mark Whitley | 70705d7 | 2000-07-14 19:06:30 +0000 | [diff] [blame] | 462 | |
| 463 | /* give back whatever's left over */ |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 464 | return cmdstr; |
Eric Andersen | 50d6360 | 1999-11-09 01:47:36 +0000 | [diff] [blame] | 465 | } |
Eric Andersen | 6b6b3f6 | 1999-10-28 16:06:25 +0000 | [diff] [blame] | 466 | |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 467 | |
| 468 | /* Parse address+command sets, skipping comment lines. */ |
| 469 | |
Eric Andersen | 14f5c8d | 2005-04-16 19:39:00 +0000 | [diff] [blame] | 470 | static void add_cmd(char *cmdstr) |
Erik Andersen | 1266a13 | 1999-12-29 22:19:46 +0000 | [diff] [blame] | 471 | { |
Glenn L McGrath | 8aac05b | 2003-09-14 04:06:12 +0000 | [diff] [blame] | 472 | sed_cmd_t *sed_cmd; |
Glenn L McGrath | 586d86c | 2003-10-09 07:22:59 +0000 | [diff] [blame] | 473 | int temp; |
Glenn L McGrath | 8aac05b | 2003-09-14 04:06:12 +0000 | [diff] [blame] | 474 | |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 475 | /* Append this line to any unfinished line from last time. */ |
Rob Landley | e3f5a3f | 2006-05-09 03:53:55 +0000 | [diff] [blame] | 476 | if (bbg.add_cmd_line) { |
Rob Landley | d921b2e | 2006-08-03 15:41:12 +0000 | [diff] [blame] | 477 | cmdstr = xasprintf("%s\n%s", bbg.add_cmd_line, cmdstr); |
Rob Landley | e3f5a3f | 2006-05-09 03:53:55 +0000 | [diff] [blame] | 478 | free(bbg.add_cmd_line); |
| 479 | bbg.add_cmd_line = cmdstr; |
Rob Landley | 12d8755 | 2006-06-05 17:32:44 +0000 | [diff] [blame] | 480 | } |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 481 | |
| 482 | /* If this line ends with backslash, request next line. */ |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 483 | temp = strlen(cmdstr); |
| 484 | if (temp && cmdstr[temp-1] == '\\') { |
| 485 | if (!bbg.add_cmd_line) |
| 486 | bbg.add_cmd_line = xstrdup(cmdstr); |
Rob Landley | e3f5a3f | 2006-05-09 03:53:55 +0000 | [diff] [blame] | 487 | bbg.add_cmd_line[temp-1] = 0; |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 488 | return; |
Glenn L McGrath | f50ce31 | 2003-03-09 15:12:24 +0000 | [diff] [blame] | 489 | } |
Mark Whitley | 6315ce6 | 2000-07-10 22:55:51 +0000 | [diff] [blame] | 490 | |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 491 | /* Loop parsing all commands in this line. */ |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 492 | while (*cmdstr) { |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 493 | /* Skip leading whitespace and semicolons */ |
| 494 | cmdstr += strspn(cmdstr, semicolon_whitespace); |
| 495 | |
| 496 | /* If no more commands, exit. */ |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 497 | if (!*cmdstr) break; |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 498 | |
| 499 | /* if this is a comment, jump past it and keep going */ |
| 500 | if (*cmdstr == '#') { |
| 501 | /* "#n" is the same as using -n on the command line */ |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 502 | if (cmdstr[1] == 'n') |
| 503 | bbg.be_quiet++; |
| 504 | cmdstr = strpbrk(cmdstr, "\n\r"); |
| 505 | if (!cmdstr) break; |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 506 | continue; |
Glenn L McGrath | c1d9507 | 2003-04-08 06:42:45 +0000 | [diff] [blame] | 507 | } |
Glenn L McGrath | 8d6395d | 2003-04-08 11:56:11 +0000 | [diff] [blame] | 508 | |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 509 | /* parse the command |
| 510 | * format is: [addr][,addr][!]cmd |
| 511 | * |----||-----||-| |
| 512 | * part1 part2 part3 |
Glenn L McGrath | f50ce31 | 2003-03-09 15:12:24 +0000 | [diff] [blame] | 513 | */ |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 514 | |
Rob Landley | 9ffd423 | 2006-05-21 18:30:35 +0000 | [diff] [blame] | 515 | sed_cmd = xzalloc(sizeof(sed_cmd_t)); |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 516 | |
| 517 | /* first part (if present) is an address: either a '$', a number or a /regex/ */ |
| 518 | cmdstr += get_address(cmdstr, &sed_cmd->beg_line, &sed_cmd->beg_match); |
| 519 | |
| 520 | /* second part (if present) will begin with a comma */ |
| 521 | if (*cmdstr == ',') { |
| 522 | int idx; |
| 523 | |
Glenn L McGrath | f50ce31 | 2003-03-09 15:12:24 +0000 | [diff] [blame] | 524 | cmdstr++; |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 525 | idx = get_address(cmdstr, &sed_cmd->end_line, &sed_cmd->end_match); |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 526 | if (!idx) |
| 527 | bb_error_msg_and_die("no address after comma"); |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 528 | cmdstr += idx; |
Glenn L McGrath | f50ce31 | 2003-03-09 15:12:24 +0000 | [diff] [blame] | 529 | } |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 530 | |
| 531 | /* skip whitespace before the command */ |
Denis Vlasenko | d18a3a2 | 2006-10-25 12:46:03 +0000 | [diff] [blame] | 532 | cmdstr = skip_whitespace(cmdstr); |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 533 | |
| 534 | /* Check for inversion flag */ |
| 535 | if (*cmdstr == '!') { |
| 536 | sed_cmd->invert = 1; |
| 537 | cmdstr++; |
| 538 | |
| 539 | /* skip whitespace before the command */ |
Denis Vlasenko | d18a3a2 | 2006-10-25 12:46:03 +0000 | [diff] [blame] | 540 | cmdstr = skip_whitespace(cmdstr); |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 541 | } |
| 542 | |
| 543 | /* last part (mandatory) will be a command */ |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 544 | if (!*cmdstr) |
| 545 | bb_error_msg_and_die("missing command"); |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 546 | sed_cmd->cmd = *(cmdstr++); |
| 547 | cmdstr = parse_cmd_args(sed_cmd, cmdstr); |
| 548 | |
| 549 | /* Add the command to the command array */ |
Rob Landley | e3f5a3f | 2006-05-09 03:53:55 +0000 | [diff] [blame] | 550 | bbg.sed_cmd_tail->next = sed_cmd; |
| 551 | bbg.sed_cmd_tail = bbg.sed_cmd_tail->next; |
Glenn L McGrath | f50ce31 | 2003-03-09 15:12:24 +0000 | [diff] [blame] | 552 | } |
| 553 | |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 554 | /* If we glued multiple lines together, free the memory. */ |
Rob Landley | e3f5a3f | 2006-05-09 03:53:55 +0000 | [diff] [blame] | 555 | free(bbg.add_cmd_line); |
| 556 | bbg.add_cmd_line = NULL; |
Mark Whitley | 6315ce6 | 2000-07-10 22:55:51 +0000 | [diff] [blame] | 557 | } |
| 558 | |
Rob Landley | dcc2866 | 2004-11-25 07:21:47 +0000 | [diff] [blame] | 559 | /* Append to a string, reallocating memory as necessary. */ |
| 560 | |
Glenn L McGrath | 8d6395d | 2003-04-08 11:56:11 +0000 | [diff] [blame] | 561 | #define PIPE_GROW 64 |
Eric Andersen | c52a6b0 | 2001-11-10 10:49:42 +0000 | [diff] [blame] | 562 | |
Eric Andersen | 14f5c8d | 2005-04-16 19:39:00 +0000 | [diff] [blame] | 563 | static void pipe_putc(char c) |
Eric Andersen | c52a6b0 | 2001-11-10 10:49:42 +0000 | [diff] [blame] | 564 | { |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 565 | if (bbg.pipeline.idx == bbg.pipeline.len) { |
Rob Landley | e3f5a3f | 2006-05-09 03:53:55 +0000 | [diff] [blame] | 566 | bbg.pipeline.buf = xrealloc(bbg.pipeline.buf, |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 567 | bbg.pipeline.len + PIPE_GROW); |
| 568 | bbg.pipeline.len += PIPE_GROW; |
Eric Andersen | c52a6b0 | 2001-11-10 10:49:42 +0000 | [diff] [blame] | 569 | } |
Rob Landley | e3f5a3f | 2006-05-09 03:53:55 +0000 | [diff] [blame] | 570 | bbg.pipeline.buf[bbg.pipeline.idx++] = c; |
Eric Andersen | c52a6b0 | 2001-11-10 10:49:42 +0000 | [diff] [blame] | 571 | } |
| 572 | |
Rob Landley | 4795e4e | 2006-07-26 17:25:08 +0000 | [diff] [blame] | 573 | static void do_subst_w_backrefs(char *line, char *replace) |
Mark Whitley | 97562bd | 2000-07-17 20:06:42 +0000 | [diff] [blame] | 574 | { |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 575 | int i,j; |
Mark Whitley | 97562bd | 2000-07-17 20:06:42 +0000 | [diff] [blame] | 576 | |
| 577 | /* go through the replacement string */ |
| 578 | for (i = 0; replace[i]; i++) { |
| 579 | /* if we find a backreference (\1, \2, etc.) print the backref'ed * text */ |
Denis Vlasenko | ef44d9d | 2007-01-17 23:16:16 +0000 | [diff] [blame] | 580 | if (replace[i] == '\\') { |
| 581 | unsigned backref = replace[++i] - '0'; |
| 582 | if (backref <= 9) { |
| 583 | /* print out the text held in bbg.regmatch[backref] */ |
| 584 | if (bbg.regmatch[backref].rm_so != -1) { |
| 585 | j = bbg.regmatch[backref].rm_so; |
| 586 | while (j < bbg.regmatch[backref].rm_eo) |
| 587 | pipe_putc(line[j++]); |
| 588 | } |
| 589 | continue; |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 590 | } |
Denis Vlasenko | ef44d9d | 2007-01-17 23:16:16 +0000 | [diff] [blame] | 591 | /* I _think_ it is impossible to get '\' to be |
| 592 | * the last char in replace string. Thus we dont check |
| 593 | * for replace[i] == NUL. (counterexample anyone?) */ |
| 594 | /* if we find a backslash escaped character, print the character */ |
| 595 | pipe_putc(replace[i]); |
| 596 | continue; |
Mark Whitley | 97562bd | 2000-07-17 20:06:42 +0000 | [diff] [blame] | 597 | } |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 598 | /* if we find an unescaped '&' print out the whole matched text. */ |
Denis Vlasenko | ef44d9d | 2007-01-17 23:16:16 +0000 | [diff] [blame] | 599 | if (replace[i] == '&') { |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 600 | j = bbg.regmatch[0].rm_so; |
| 601 | while (j < bbg.regmatch[0].rm_eo) |
| 602 | pipe_putc(line[j++]); |
Denis Vlasenko | ef44d9d | 2007-01-17 23:16:16 +0000 | [diff] [blame] | 603 | continue; |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 604 | } |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 605 | /* Otherwise just output the character. */ |
Denis Vlasenko | ef44d9d | 2007-01-17 23:16:16 +0000 | [diff] [blame] | 606 | pipe_putc(replace[i]); |
Mark Whitley | 97562bd | 2000-07-17 20:06:42 +0000 | [diff] [blame] | 607 | } |
| 608 | } |
| 609 | |
Rob Landley | e3f5a3f | 2006-05-09 03:53:55 +0000 | [diff] [blame] | 610 | static int do_subst_command(sed_cmd_t *sed_cmd, char **line) |
Mark Whitley | 4f7fe77 | 2000-07-13 20:01:58 +0000 | [diff] [blame] | 611 | { |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 612 | char *oldline = *line; |
Mark Whitley | 4f7fe77 | 2000-07-13 20:01:58 +0000 | [diff] [blame] | 613 | int altered = 0; |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 614 | int match_count = 0; |
Glenn L McGrath | c1d9507 | 2003-04-08 06:42:45 +0000 | [diff] [blame] | 615 | regex_t *current_regex; |
| 616 | |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 617 | /* Handle empty regex. */ |
Glenn L McGrath | c1d9507 | 2003-04-08 06:42:45 +0000 | [diff] [blame] | 618 | if (sed_cmd->sub_match == NULL) { |
Rob Landley | e3f5a3f | 2006-05-09 03:53:55 +0000 | [diff] [blame] | 619 | current_regex = bbg.previous_regex_ptr; |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 620 | if (!current_regex) |
Denis Vlasenko | d3d004d | 2006-10-27 09:02:31 +0000 | [diff] [blame] | 621 | bb_error_msg_and_die("no previous regexp"); |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 622 | } else |
| 623 | bbg.previous_regex_ptr = current_regex = sed_cmd->sub_match; |
Mark Whitley | 4f7fe77 | 2000-07-13 20:01:58 +0000 | [diff] [blame] | 624 | |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 625 | /* Find the first match */ |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 626 | if (REG_NOMATCH == regexec(current_regex, oldline, 10, bbg.regmatch, 0)) |
Mark Whitley | 2dc192f | 2000-11-03 19:47:00 +0000 | [diff] [blame] | 627 | return 0; |
| 628 | |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 629 | /* Initialize temporary output buffer. */ |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 630 | bbg.pipeline.buf = xmalloc(PIPE_GROW); |
| 631 | bbg.pipeline.len = PIPE_GROW; |
| 632 | bbg.pipeline.idx = 0; |
Mark Whitley | 2dc192f | 2000-11-03 19:47:00 +0000 | [diff] [blame] | 633 | |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 634 | /* Now loop through, substituting for matches */ |
| 635 | do { |
Mark Whitley | 4f7fe77 | 2000-07-13 20:01:58 +0000 | [diff] [blame] | 636 | int i; |
Mark Whitley | 4f7fe77 | 2000-07-13 20:01:58 +0000 | [diff] [blame] | 637 | |
Eric Andersen | c06f568 | 2004-02-04 10:57:46 +0000 | [diff] [blame] | 638 | /* Work around bug in glibc regexec, demonstrated by: |
| 639 | echo " a.b" | busybox sed 's [^ .]* x g' |
| 640 | The match_count check is so not to break |
| 641 | echo "hi" | busybox sed 's/^/!/g' */ |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 642 | if (!bbg.regmatch[0].rm_so && !bbg.regmatch[0].rm_eo && match_count) { |
| 643 | pipe_putc(*oldline++); |
Eric Andersen | c06f568 | 2004-02-04 10:57:46 +0000 | [diff] [blame] | 644 | continue; |
| 645 | } |
| 646 | |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 647 | match_count++; |
| 648 | |
| 649 | /* If we aren't interested in this match, output old line to |
| 650 | end of match and continue */ |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 651 | if (sed_cmd->which_match && sed_cmd->which_match != match_count) { |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 652 | for (i = 0; i < bbg.regmatch[0].rm_eo; i++) |
| 653 | pipe_putc(*oldline++); |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 654 | continue; |
| 655 | } |
| 656 | |
Mark Whitley | 2dc192f | 2000-11-03 19:47:00 +0000 | [diff] [blame] | 657 | /* print everything before the match */ |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 658 | for (i = 0; i < bbg.regmatch[0].rm_so; i++) |
| 659 | pipe_putc(oldline[i]); |
Mark Whitley | 97562bd | 2000-07-17 20:06:42 +0000 | [diff] [blame] | 660 | |
Mark Whitley | 2dc192f | 2000-11-03 19:47:00 +0000 | [diff] [blame] | 661 | /* then print the substitution string */ |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 662 | do_subst_w_backrefs(oldline, sed_cmd->string); |
Mark Whitley | 97562bd | 2000-07-17 20:06:42 +0000 | [diff] [blame] | 663 | |
Mark Whitley | 2dc192f | 2000-11-03 19:47:00 +0000 | [diff] [blame] | 664 | /* advance past the match */ |
Rob Landley | e3f5a3f | 2006-05-09 03:53:55 +0000 | [diff] [blame] | 665 | oldline += bbg.regmatch[0].rm_eo; |
Mark Whitley | 2dc192f | 2000-11-03 19:47:00 +0000 | [diff] [blame] | 666 | /* flag that something has changed */ |
| 667 | altered++; |
Mark Whitley | 97562bd | 2000-07-17 20:06:42 +0000 | [diff] [blame] | 668 | |
Mark Whitley | 2dc192f | 2000-11-03 19:47:00 +0000 | [diff] [blame] | 669 | /* if we're not doing this globally, get out now */ |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 670 | if (sed_cmd->which_match) break; |
Rob Landley | e3f5a3f | 2006-05-09 03:53:55 +0000 | [diff] [blame] | 671 | } while (*oldline && (regexec(current_regex, oldline, 10, bbg.regmatch, 0) != REG_NOMATCH)); |
Mark Whitley | 2dc192f | 2000-11-03 19:47:00 +0000 | [diff] [blame] | 672 | |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 673 | /* Copy rest of string into output pipeline */ |
| 674 | |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 675 | while (*oldline) |
| 676 | pipe_putc(*oldline++); |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 677 | pipe_putc(0); |
Mark Whitley | 2dc192f | 2000-11-03 19:47:00 +0000 | [diff] [blame] | 678 | |
Eric Andersen | b76cb68 | 2001-08-22 05:58:16 +0000 | [diff] [blame] | 679 | free(*line); |
Rob Landley | e3f5a3f | 2006-05-09 03:53:55 +0000 | [diff] [blame] | 680 | *line = bbg.pipeline.buf; |
Mark Whitley | 4f7fe77 | 2000-07-13 20:01:58 +0000 | [diff] [blame] | 681 | return altered; |
| 682 | } |
Mark Whitley | 6315ce6 | 2000-07-10 22:55:51 +0000 | [diff] [blame] | 683 | |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 684 | /* Set command pointer to point to this label. (Does not handle null label.) */ |
Rob Landley | 4795e4e | 2006-07-26 17:25:08 +0000 | [diff] [blame] | 685 | static sed_cmd_t *branch_to(char *label) |
Glenn L McGrath | 961c6c1 | 2003-03-28 04:43:39 +0000 | [diff] [blame] | 686 | { |
| 687 | sed_cmd_t *sed_cmd; |
Glenn L McGrath | d4185b0 | 2003-04-11 17:10:23 +0000 | [diff] [blame] | 688 | |
Rob Landley | e3f5a3f | 2006-05-09 03:53:55 +0000 | [diff] [blame] | 689 | for (sed_cmd = bbg.sed_cmd_head.next; sed_cmd; sed_cmd = sed_cmd->next) { |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 690 | if (sed_cmd->cmd == ':' && sed_cmd->string && !strcmp(sed_cmd->string, label)) { |
| 691 | return sed_cmd; |
Glenn L McGrath | 961c6c1 | 2003-03-28 04:43:39 +0000 | [diff] [blame] | 692 | } |
| 693 | } |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 694 | bb_error_msg_and_die("can't find label for jump to '%s'", label); |
Glenn L McGrath | 961c6c1 | 2003-03-28 04:43:39 +0000 | [diff] [blame] | 695 | } |
Mark Whitley | 6315ce6 | 2000-07-10 22:55:51 +0000 | [diff] [blame] | 696 | |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 697 | static void append(char *s) |
| 698 | { |
Rob Landley | d921b2e | 2006-08-03 15:41:12 +0000 | [diff] [blame] | 699 | llist_add_to_end(&bbg.append_head, xstrdup(s)); |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 700 | } |
| 701 | |
| 702 | static void flush_append(void) |
| 703 | { |
Rob Landley | 0b65628 | 2006-05-08 22:17:23 +0000 | [diff] [blame] | 704 | char *data; |
| 705 | |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 706 | /* Output appended lines. */ |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 707 | while ((data = (char *)llist_pop(&bbg.append_head))) { |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 708 | fprintf(bbg.nonstdout, "%s\n", data); |
Rob Landley | 0b65628 | 2006-05-08 22:17:23 +0000 | [diff] [blame] | 709 | free(data); |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 710 | } |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 711 | } |
| 712 | |
Eric Andersen | 14f5c8d | 2005-04-16 19:39:00 +0000 | [diff] [blame] | 713 | static void add_input_file(FILE *file) |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 714 | { |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 715 | bbg.input_file_list = xrealloc(bbg.input_file_list, |
Rob Landley | e3f5a3f | 2006-05-09 03:53:55 +0000 | [diff] [blame] | 716 | (bbg.input_file_count + 1) * sizeof(FILE *)); |
| 717 | bbg.input_file_list[bbg.input_file_count++] = file; |
Rob Landley | dcc2866 | 2004-11-25 07:21:47 +0000 | [diff] [blame] | 718 | } |
| 719 | |
Denis Vlasenko | 826c85f | 2007-01-28 23:26:15 +0000 | [diff] [blame^] | 720 | enum { |
| 721 | MASK_NO_EOL_CHAR = 0x100, |
| 722 | //MASK_FIRST_LINE = 0x200, |
| 723 | }; |
| 724 | |
Rob Landley | e3f5a3f | 2006-05-09 03:53:55 +0000 | [diff] [blame] | 725 | /* Get next line of input from bbg.input_file_list, flushing append buffer and |
Rob Landley | dcc2866 | 2004-11-25 07:21:47 +0000 | [diff] [blame] | 726 | * noting if we ran out of files without a newline on the last line we read. |
| 727 | */ |
Denis Vlasenko | 8b22b07 | 2006-12-02 17:58:10 +0000 | [diff] [blame] | 728 | static char *get_next_line(int *last_char) |
Rob Landley | dcc2866 | 2004-11-25 07:21:47 +0000 | [diff] [blame] | 729 | { |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 730 | char *temp = NULL; |
Denis Vlasenko | 1375bc7 | 2006-12-02 20:12:12 +0000 | [diff] [blame] | 731 | int len, lc; |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 732 | |
Denis Vlasenko | 1375bc7 | 2006-12-02 20:12:12 +0000 | [diff] [blame] | 733 | lc = 0; |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 734 | flush_append(); |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 735 | while (bbg.current_input_file < bbg.input_file_count) { |
Denis Vlasenko | ef44d9d | 2007-01-17 23:16:16 +0000 | [diff] [blame] | 736 | /* Read line up to a newline or NUL byte, inclusive, |
| 737 | * return malloc'ed char[]. length of the chunk read |
| 738 | * is stored in len. NULL if EOF/error */ |
Denis Vlasenko | 8b22b07 | 2006-12-02 17:58:10 +0000 | [diff] [blame] | 739 | temp = bb_get_chunk_from_file( |
| 740 | bbg.input_file_list[bbg.current_input_file], &len); |
Rob Landley | 2b26fd5 | 2006-02-24 02:30:39 +0000 | [diff] [blame] | 741 | if (temp) { |
Denis Vlasenko | 8b22b07 | 2006-12-02 17:58:10 +0000 | [diff] [blame] | 742 | /* len > 0 here, it's ok to do temp[len-1] */ |
| 743 | char c = temp[len-1]; |
| 744 | if (c == '\n' || c == '\0') { |
| 745 | temp[len-1] = '\0'; |
Denis Vlasenko | 1375bc7 | 2006-12-02 20:12:12 +0000 | [diff] [blame] | 746 | lc |= (unsigned char)c; |
| 747 | break; |
Denis Vlasenko | 8b22b07 | 2006-12-02 17:58:10 +0000 | [diff] [blame] | 748 | } |
Denis Vlasenko | 1375bc7 | 2006-12-02 20:12:12 +0000 | [diff] [blame] | 749 | /* will be returned if last line in the file |
| 750 | * doesn't end with either '\n' or '\0' */ |
Denis Vlasenko | 826c85f | 2007-01-28 23:26:15 +0000 | [diff] [blame^] | 751 | lc |= MASK_NO_EOL_CHAR; |
Rob Landley | dcc2866 | 2004-11-25 07:21:47 +0000 | [diff] [blame] | 752 | break; |
Denis Vlasenko | 8b22b07 | 2006-12-02 17:58:10 +0000 | [diff] [blame] | 753 | } |
| 754 | /* Close this file and advance to next one */ |
| 755 | fclose(bbg.input_file_list[bbg.current_input_file++]); |
Denis Vlasenko | 1375bc7 | 2006-12-02 20:12:12 +0000 | [diff] [blame] | 756 | /* "this is the first line from new input file" */ |
Denis Vlasenko | 826c85f | 2007-01-28 23:26:15 +0000 | [diff] [blame^] | 757 | //lc |= MASK_FIRST_LINE; |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 758 | } |
Denis Vlasenko | 1375bc7 | 2006-12-02 20:12:12 +0000 | [diff] [blame] | 759 | *last_char = lc; |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 760 | return temp; |
| 761 | } |
| 762 | |
Denis Vlasenko | 8b22b07 | 2006-12-02 17:58:10 +0000 | [diff] [blame] | 763 | /* Output line of text. */ |
| 764 | /* Note: |
Denis Vlasenko | 826c85f | 2007-01-28 23:26:15 +0000 | [diff] [blame^] | 765 | * The tricks with MASK_FIRST_LINE and last_puts_char are there to emulate gnu sed. |
Denis Vlasenko | 1375bc7 | 2006-12-02 20:12:12 +0000 | [diff] [blame] | 766 | * Without them, we had this: |
Denis Vlasenko | 8b22b07 | 2006-12-02 17:58:10 +0000 | [diff] [blame] | 767 | * echo -n thingy >z1 |
| 768 | * echo -n again >z2 |
| 769 | * >znull |
Denis Vlasenko | ef44d9d | 2007-01-17 23:16:16 +0000 | [diff] [blame] | 770 | * sed "s/i/z/" z1 z2 znull | hexdump -vC |
| 771 | * output: |
Denis Vlasenko | 8b22b07 | 2006-12-02 17:58:10 +0000 | [diff] [blame] | 772 | * gnu sed 4.1.5: |
| 773 | * 00000000 74 68 7a 6e 67 79 0a 61 67 61 7a 6e |thzngy.agazn| |
| 774 | * bbox: |
| 775 | * 00000000 74 68 7a 6e 67 79 61 67 61 7a 6e |thzngyagazn| |
Denis Vlasenko | 8b22b07 | 2006-12-02 17:58:10 +0000 | [diff] [blame] | 776 | */ |
Denis Vlasenko | 826c85f | 2007-01-28 23:26:15 +0000 | [diff] [blame^] | 777 | static void puts_maybe_newline(char *s, FILE *file, int last_char) |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 778 | { |
Denis Vlasenko | 826c85f | 2007-01-28 23:26:15 +0000 | [diff] [blame^] | 779 | static char last_puts_char = '\n'; |
Denis Vlasenko | 1375bc7 | 2006-12-02 20:12:12 +0000 | [diff] [blame] | 780 | |
| 781 | /* Is this a first line from new file |
Denis Vlasenko | 826c85f | 2007-01-28 23:26:15 +0000 | [diff] [blame^] | 782 | * and old file didn't end with '\n' or '\0'? */ |
| 783 | // if ((last_char & MASK_FIRST_LINE) && last_puts_char != '\n') { |
| 784 | if (last_puts_char != '\n' && last_puts_char != '\0') { |
Denis Vlasenko | 1375bc7 | 2006-12-02 20:12:12 +0000 | [diff] [blame] | 785 | fputc('\n', file); |
| 786 | last_puts_char = '\n'; |
| 787 | } |
Denis Vlasenko | 8b22b07 | 2006-12-02 17:58:10 +0000 | [diff] [blame] | 788 | fputs(s, file); |
Denis Vlasenko | ef44d9d | 2007-01-17 23:16:16 +0000 | [diff] [blame] | 789 | /* why 'x'? - just something which is not '\n' */ |
| 790 | if (s[0]) |
| 791 | last_puts_char = 'x'; |
Denis Vlasenko | 826c85f | 2007-01-28 23:26:15 +0000 | [diff] [blame^] | 792 | if (!(last_char & MASK_NO_EOL_CHAR)) { /* had trailing '\n' or '\0'? */ |
Denis Vlasenko | 1375bc7 | 2006-12-02 20:12:12 +0000 | [diff] [blame] | 793 | last_char &= 0xff; |
| 794 | fputc(last_char, file); |
| 795 | last_puts_char = last_char; |
| 796 | } |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 797 | |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 798 | if (ferror(file)) { |
Denis Vlasenko | 4092082 | 2006-10-03 20:28:06 +0000 | [diff] [blame] | 799 | xfunc_error_retval = 4; /* It's what gnu sed exits with... */ |
Bernhard Reutner-Fischer | a3d4bf3 | 2006-06-03 21:40:11 +0000 | [diff] [blame] | 800 | bb_error_msg_and_die(bb_msg_write_error); |
Rob Landley | 53302f8 | 2004-02-18 09:54:15 +0000 | [diff] [blame] | 801 | } |
| 802 | |
Denis Vlasenko | 826c85f | 2007-01-28 23:26:15 +0000 | [diff] [blame^] | 803 | /* Seems to be unused */ |
| 804 | /*return last_char;*/ |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 805 | } |
| 806 | |
Denis Vlasenko | 826c85f | 2007-01-28 23:26:15 +0000 | [diff] [blame^] | 807 | #define sed_puts(s, n) (puts_maybe_newline(s, bbg.nonstdout, n)) |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 808 | |
Rob Landley | 2b26fd5 | 2006-02-24 02:30:39 +0000 | [diff] [blame] | 809 | /* Process all the lines in all the files */ |
| 810 | |
Rob Landley | dcc2866 | 2004-11-25 07:21:47 +0000 | [diff] [blame] | 811 | static void process_files(void) |
Mark Whitley | 6315ce6 | 2000-07-10 22:55:51 +0000 | [diff] [blame] | 812 | { |
Rob Landley | ce4f0e9 | 2004-10-30 06:54:19 +0000 | [diff] [blame] | 813 | char *pattern_space, *next_line; |
Denis Vlasenko | 826c85f | 2007-01-28 23:26:15 +0000 | [diff] [blame^] | 814 | int linenum = 0; |
Denis Vlasenko | 8b22b07 | 2006-12-02 17:58:10 +0000 | [diff] [blame] | 815 | int last_char, next_last_char = 0; |
Denis Vlasenko | 2ea630f | 2006-12-10 02:52:19 +0000 | [diff] [blame] | 816 | sed_cmd_t *sed_cmd; |
| 817 | int substituted; |
Mark Whitley | 6315ce6 | 2000-07-10 22:55:51 +0000 | [diff] [blame] | 818 | |
Rob Landley | 2b26fd5 | 2006-02-24 02:30:39 +0000 | [diff] [blame] | 819 | /* Prime the pump */ |
Denis Vlasenko | 8b22b07 | 2006-12-02 17:58:10 +0000 | [diff] [blame] | 820 | next_line = get_next_line(&next_last_char); |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 821 | |
Rob Landley | dcc2866 | 2004-11-25 07:21:47 +0000 | [diff] [blame] | 822 | /* go through every line in each file */ |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 823 | again: |
Denis Vlasenko | 2ea630f | 2006-12-10 02:52:19 +0000 | [diff] [blame] | 824 | substituted = 0; |
Glenn L McGrath | 505bd0f | 2003-03-08 05:21:02 +0000 | [diff] [blame] | 825 | |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 826 | /* Advance to next line. Stop if out of lines. */ |
| 827 | pattern_space = next_line; |
| 828 | if (!pattern_space) return; |
| 829 | last_char = next_last_char; |
| 830 | |
| 831 | /* Read one line in advance so we can act on the last line, |
| 832 | * the '$' address */ |
| 833 | next_line = get_next_line(&next_last_char); |
| 834 | linenum++; |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 835 | restart: |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 836 | /* for every line, go through all the commands */ |
| 837 | for (sed_cmd = bbg.sed_cmd_head.next; sed_cmd; sed_cmd = sed_cmd->next) { |
| 838 | int old_matched, matched; |
Eric Andersen | 52a3c27 | 2003-12-23 08:53:51 +0000 | [diff] [blame] | 839 | |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 840 | old_matched = sed_cmd->in_match; |
Mark Whitley | 0915c4b | 2001-06-11 23:50:06 +0000 | [diff] [blame] | 841 | |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 842 | /* Determine if this command matches this line: */ |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 843 | |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 844 | /* Are we continuing a previous multi-line match? */ |
| 845 | sed_cmd->in_match = sed_cmd->in_match |
| 846 | /* Or is no range necessary? */ |
| 847 | || (!sed_cmd->beg_line && !sed_cmd->end_line |
| 848 | && !sed_cmd->beg_match && !sed_cmd->end_match) |
| 849 | /* Or did we match the start of a numerical range? */ |
| 850 | || (sed_cmd->beg_line > 0 && (sed_cmd->beg_line == linenum)) |
| 851 | /* Or does this line match our begin address regex? */ |
| 852 | || (sed_cmd->beg_match && |
| 853 | !regexec(sed_cmd->beg_match, pattern_space, 0, NULL, 0)) |
| 854 | /* Or did we match last line of input? */ |
| 855 | || (sed_cmd->beg_line == -1 && next_line == NULL); |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 856 | |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 857 | /* Snapshot the value */ |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 858 | |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 859 | matched = sed_cmd->in_match; |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 860 | |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 861 | /* Is this line the end of the current match? */ |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 862 | |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 863 | if (matched) { |
| 864 | sed_cmd->in_match = !( |
| 865 | /* has the ending line come, or is this a single address command? */ |
| 866 | (sed_cmd->end_line ? |
| 867 | sed_cmd->end_line == -1 ? |
| 868 | !next_line |
| 869 | : (sed_cmd->end_line <= linenum) |
| 870 | : !sed_cmd->end_match |
| 871 | ) |
| 872 | /* or does this line matches our last address regex */ |
| 873 | || (sed_cmd->end_match && old_matched |
| 874 | && (regexec(sed_cmd->end_match, |
| 875 | pattern_space, 0, NULL, 0) == 0)) |
| 876 | ); |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 877 | } |
Erik Andersen | 1266a13 | 1999-12-29 22:19:46 +0000 | [diff] [blame] | 878 | |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 879 | /* Skip blocks of commands we didn't match. */ |
| 880 | if (sed_cmd->cmd == '{') { |
Denis Vlasenko | 826c85f | 2007-01-28 23:26:15 +0000 | [diff] [blame^] | 881 | if (sed_cmd->invert ? matched : !matched) { |
| 882 | while (sed_cmd->cmd != '}') { |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 883 | sed_cmd = sed_cmd->next; |
Denis Vlasenko | 826c85f | 2007-01-28 23:26:15 +0000 | [diff] [blame^] | 884 | if (!sed_cmd) |
| 885 | bb_error_msg_and_die("unterminated {"); |
| 886 | } |
| 887 | } |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 888 | continue; |
| 889 | } |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 890 | |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 891 | /* Okay, so did this line match? */ |
| 892 | if (sed_cmd->invert ? !matched : matched) { |
| 893 | /* Update last used regex in case a blank substitute BRE is found */ |
| 894 | if (sed_cmd->beg_match) { |
| 895 | bbg.previous_regex_ptr = sed_cmd->beg_match; |
| 896 | } |
| 897 | |
| 898 | /* actual sedding */ |
| 899 | switch (sed_cmd->cmd) { |
| 900 | |
| 901 | /* Print line number */ |
| 902 | case '=': |
| 903 | fprintf(bbg.nonstdout, "%d\n", linenum); |
| 904 | break; |
| 905 | |
| 906 | /* Write the current pattern space up to the first newline */ |
| 907 | case 'P': |
| 908 | { |
| 909 | char *tmp = strchr(pattern_space, '\n'); |
| 910 | |
| 911 | if (tmp) { |
| 912 | *tmp = '\0'; |
Denis Vlasenko | 826c85f | 2007-01-28 23:26:15 +0000 | [diff] [blame^] | 913 | /* TODO: explain why '\n' below */ |
| 914 | sed_puts(pattern_space, '\n'); |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 915 | *tmp = '\n'; |
| 916 | break; |
| 917 | } |
| 918 | /* Fall Through */ |
| 919 | } |
| 920 | |
| 921 | /* Write the current pattern space to output */ |
| 922 | case 'p': |
Denis Vlasenko | 826c85f | 2007-01-28 23:26:15 +0000 | [diff] [blame^] | 923 | /* NB: we print this _before_ the last line |
| 924 | * (of current file) is printed. Even if |
| 925 | * that line is nonterminated, we print |
| 926 | * '\n' here (gnu sed does the same) */ |
| 927 | sed_puts(pattern_space, (last_char & 0x200) | '\n'); |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 928 | break; |
| 929 | /* Delete up through first newline */ |
| 930 | case 'D': |
| 931 | { |
| 932 | char *tmp = strchr(pattern_space, '\n'); |
| 933 | |
| 934 | if (tmp) { |
| 935 | tmp = xstrdup(tmp+1); |
| 936 | free(pattern_space); |
| 937 | pattern_space = tmp; |
| 938 | goto restart; |
| 939 | } |
| 940 | } |
| 941 | /* discard this line. */ |
| 942 | case 'd': |
| 943 | goto discard_line; |
| 944 | |
| 945 | /* Substitute with regex */ |
| 946 | case 's': |
| 947 | if (!do_subst_command(sed_cmd, &pattern_space)) |
| 948 | break; |
| 949 | substituted |= 1; |
| 950 | |
| 951 | /* handle p option */ |
| 952 | if (sed_cmd->sub_p) |
| 953 | sed_puts(pattern_space, last_char); |
| 954 | /* handle w option */ |
| 955 | if (sed_cmd->file) |
Denis Vlasenko | 826c85f | 2007-01-28 23:26:15 +0000 | [diff] [blame^] | 956 | /*sed_cmd->sw_last_char =*/ puts_maybe_newline( |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 957 | pattern_space, sed_cmd->file, |
Denis Vlasenko | 826c85f | 2007-01-28 23:26:15 +0000 | [diff] [blame^] | 958 | last_char); |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 959 | break; |
| 960 | |
| 961 | /* Append line to linked list to be printed later */ |
| 962 | case 'a': |
| 963 | append(sed_cmd->string); |
| 964 | break; |
| 965 | |
| 966 | /* Insert text before this line */ |
| 967 | case 'i': |
Denis Vlasenko | 826c85f | 2007-01-28 23:26:15 +0000 | [diff] [blame^] | 968 | sed_puts(sed_cmd->string, '\n'); |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 969 | break; |
| 970 | |
| 971 | /* Cut and paste text (replace) */ |
| 972 | case 'c': |
| 973 | /* Only triggers on last line of a matching range. */ |
| 974 | if (!sed_cmd->in_match) |
Denis Vlasenko | 826c85f | 2007-01-28 23:26:15 +0000 | [diff] [blame^] | 975 | sed_puts(sed_cmd->string, MASK_NO_EOL_CHAR); |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 976 | goto discard_line; |
| 977 | |
| 978 | /* Read file, append contents to output */ |
| 979 | case 'r': |
| 980 | { |
| 981 | FILE *rfile; |
| 982 | |
| 983 | rfile = fopen(sed_cmd->string, "r"); |
| 984 | if (rfile) { |
| 985 | char *line; |
| 986 | |
| 987 | while ((line = xmalloc_getline(rfile)) |
| 988 | != NULL) |
| 989 | append(line); |
| 990 | xprint_and_close_file(rfile); |
| 991 | } |
| 992 | |
| 993 | break; |
| 994 | } |
| 995 | |
| 996 | /* Write pattern space to file. */ |
| 997 | case 'w': |
Denis Vlasenko | 826c85f | 2007-01-28 23:26:15 +0000 | [diff] [blame^] | 998 | /*sed_cmd->sw_last_char =*/ puts_maybe_newline( |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 999 | pattern_space, sed_cmd->file, |
Denis Vlasenko | 826c85f | 2007-01-28 23:26:15 +0000 | [diff] [blame^] | 1000 | last_char); |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 1001 | break; |
| 1002 | |
| 1003 | /* Read next line from input */ |
| 1004 | case 'n': |
| 1005 | if (!bbg.be_quiet) |
| 1006 | sed_puts(pattern_space, last_char); |
| 1007 | if (next_line) { |
| 1008 | free(pattern_space); |
| 1009 | pattern_space = next_line; |
| 1010 | last_char = next_last_char; |
| 1011 | next_line = get_next_line(&next_last_char); |
| 1012 | linenum++; |
| 1013 | break; |
| 1014 | } |
| 1015 | /* fall through */ |
| 1016 | |
| 1017 | /* Quit. End of script, end of input. */ |
| 1018 | case 'q': |
| 1019 | /* Exit the outer while loop */ |
| 1020 | free(next_line); |
| 1021 | next_line = NULL; |
| 1022 | goto discard_commands; |
| 1023 | |
| 1024 | /* Append the next line to the current line */ |
| 1025 | case 'N': |
| 1026 | { |
| 1027 | int len; |
| 1028 | /* If no next line, jump to end of script and exit. */ |
| 1029 | if (next_line == NULL) { |
| 1030 | /* Jump to end of script and exit */ |
| 1031 | free(next_line); |
| 1032 | next_line = NULL; |
| 1033 | goto discard_line; |
| 1034 | /* append next_line, read new next_line. */ |
| 1035 | } |
| 1036 | len = strlen(pattern_space); |
| 1037 | pattern_space = realloc(pattern_space, len + strlen(next_line) + 2); |
| 1038 | pattern_space[len] = '\n'; |
| 1039 | strcpy(pattern_space + len+1, next_line); |
| 1040 | last_char = next_last_char; |
| 1041 | next_line = get_next_line(&next_last_char); |
| 1042 | linenum++; |
| 1043 | break; |
| 1044 | } |
| 1045 | |
| 1046 | /* Test/branch if substitution occurred */ |
| 1047 | case 't': |
| 1048 | if (!substituted) break; |
| 1049 | substituted = 0; |
| 1050 | /* Fall through */ |
| 1051 | /* Test/branch if substitution didn't occur */ |
| 1052 | case 'T': |
| 1053 | if (substituted) break; |
| 1054 | /* Fall through */ |
| 1055 | /* Branch to label */ |
| 1056 | case 'b': |
| 1057 | if (!sed_cmd->string) goto discard_commands; |
| 1058 | else sed_cmd = branch_to(sed_cmd->string); |
| 1059 | break; |
| 1060 | /* Transliterate characters */ |
| 1061 | case 'y': |
| 1062 | { |
| 1063 | int i, j; |
| 1064 | |
| 1065 | for (i = 0; pattern_space[i]; i++) { |
| 1066 | for (j = 0; sed_cmd->string[j]; j += 2) { |
| 1067 | if (pattern_space[i] == sed_cmd->string[j]) { |
| 1068 | pattern_space[i] = sed_cmd->string[j + 1]; |
| 1069 | break; |
| 1070 | } |
| 1071 | } |
| 1072 | } |
| 1073 | |
| 1074 | break; |
| 1075 | } |
| 1076 | case 'g': /* Replace pattern space with hold space */ |
| 1077 | free(pattern_space); |
| 1078 | pattern_space = xstrdup(bbg.hold_space ? bbg.hold_space : ""); |
| 1079 | break; |
| 1080 | case 'G': /* Append newline and hold space to pattern space */ |
| 1081 | { |
| 1082 | int pattern_space_size = 2; |
| 1083 | int hold_space_size = 0; |
| 1084 | |
| 1085 | if (pattern_space) |
| 1086 | pattern_space_size += strlen(pattern_space); |
| 1087 | if (bbg.hold_space) |
| 1088 | hold_space_size = strlen(bbg.hold_space); |
| 1089 | pattern_space = xrealloc(pattern_space, |
| 1090 | pattern_space_size + hold_space_size); |
| 1091 | if (pattern_space_size == 2) |
| 1092 | pattern_space[0] = 0; |
| 1093 | strcat(pattern_space, "\n"); |
| 1094 | if (bbg.hold_space) |
| 1095 | strcat(pattern_space, bbg.hold_space); |
| 1096 | last_char = '\n'; |
| 1097 | |
| 1098 | break; |
| 1099 | } |
| 1100 | case 'h': /* Replace hold space with pattern space */ |
| 1101 | free(bbg.hold_space); |
| 1102 | bbg.hold_space = xstrdup(pattern_space); |
| 1103 | break; |
| 1104 | case 'H': /* Append newline and pattern space to hold space */ |
| 1105 | { |
| 1106 | int hold_space_size = 2; |
| 1107 | int pattern_space_size = 0; |
| 1108 | |
| 1109 | if (bbg.hold_space) |
| 1110 | hold_space_size += strlen(bbg.hold_space); |
| 1111 | if (pattern_space) |
| 1112 | pattern_space_size = strlen(pattern_space); |
| 1113 | bbg.hold_space = xrealloc(bbg.hold_space, |
| 1114 | hold_space_size + pattern_space_size); |
| 1115 | |
| 1116 | if (hold_space_size == 2) |
| 1117 | *bbg.hold_space = 0; |
| 1118 | strcat(bbg.hold_space, "\n"); |
| 1119 | if (pattern_space) |
| 1120 | strcat(bbg.hold_space, pattern_space); |
| 1121 | |
| 1122 | break; |
| 1123 | } |
| 1124 | case 'x': /* Exchange hold and pattern space */ |
| 1125 | { |
| 1126 | char *tmp = pattern_space; |
| 1127 | pattern_space = bbg.hold_space ? : xzalloc(1); |
| 1128 | last_char = '\n'; |
| 1129 | bbg.hold_space = tmp; |
| 1130 | break; |
| 1131 | } |
| 1132 | } |
| 1133 | } |
Glenn L McGrath | aa5a602 | 2003-10-01 03:06:16 +0000 | [diff] [blame] | 1134 | } |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 1135 | |
| 1136 | /* |
| 1137 | * exit point from sedding... |
| 1138 | */ |
Denis Vlasenko | 826c85f | 2007-01-28 23:26:15 +0000 | [diff] [blame^] | 1139 | discard_commands: |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 1140 | /* we will print the line unless we were told to be quiet ('-n') |
| 1141 | or if the line was suppressed (ala 'd'elete) */ |
Denis Vlasenko | 826c85f | 2007-01-28 23:26:15 +0000 | [diff] [blame^] | 1142 | if (!bbg.be_quiet) |
| 1143 | sed_puts(pattern_space, last_char); |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 1144 | |
| 1145 | /* Delete and such jump here. */ |
Denis Vlasenko | 826c85f | 2007-01-28 23:26:15 +0000 | [diff] [blame^] | 1146 | discard_line: |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 1147 | flush_append(); |
| 1148 | free(pattern_space); |
| 1149 | |
| 1150 | goto again; |
Erik Andersen | 1266a13 | 1999-12-29 22:19:46 +0000 | [diff] [blame] | 1151 | } |
| 1152 | |
Glenn L McGrath | 42c2573 | 2003-10-04 05:27:56 +0000 | [diff] [blame] | 1153 | /* It is possible to have a command line argument with embedded |
| 1154 | newlines. This counts as multiple command lines. */ |
| 1155 | |
| 1156 | static void add_cmd_block(char *cmdstr) |
| 1157 | { |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 1158 | int go = 1; |
| 1159 | char *temp = xstrdup(cmdstr), *temp2 = temp; |
Glenn L McGrath | 42c2573 | 2003-10-04 05:27:56 +0000 | [diff] [blame] | 1160 | |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 1161 | while (go) { |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 1162 | int len = strcspn(temp2, "\n"); |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 1163 | if (!temp2[len]) go = 0; |
| 1164 | else temp2[len] = 0; |
Glenn L McGrath | 42c2573 | 2003-10-04 05:27:56 +0000 | [diff] [blame] | 1165 | add_cmd(temp2); |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 1166 | temp2 += len+1; |
Glenn L McGrath | 42c2573 | 2003-10-04 05:27:56 +0000 | [diff] [blame] | 1167 | } |
| 1168 | free(temp); |
| 1169 | } |
| 1170 | |
Denis Vlasenko | e2016e1 | 2006-10-01 21:37:40 +0000 | [diff] [blame] | 1171 | static void add_cmds_link(llist_t *opt_e) |
| 1172 | { |
| 1173 | if (!opt_e) return; |
| 1174 | add_cmds_link(opt_e->link); |
| 1175 | add_cmd_block(opt_e->data); |
| 1176 | free(opt_e); |
| 1177 | } |
| 1178 | |
| 1179 | static void add_files_link(llist_t *opt_f) |
| 1180 | { |
| 1181 | char *line; |
| 1182 | FILE *cmdfile; |
| 1183 | if (!opt_f) return; |
| 1184 | add_files_link(opt_f->link); |
| 1185 | cmdfile = xfopen(opt_f->data, "r"); |
Denis Vlasenko | 2d5ca60 | 2006-10-12 22:43:20 +0000 | [diff] [blame] | 1186 | while ((line = xmalloc_getline(cmdfile)) != NULL) { |
Denis Vlasenko | e2016e1 | 2006-10-01 21:37:40 +0000 | [diff] [blame] | 1187 | add_cmd(line); |
| 1188 | free(line); |
| 1189 | } |
| 1190 | xprint_and_close_file(cmdfile); |
| 1191 | free(opt_f); |
| 1192 | } |
| 1193 | |
Rob Landley | dfba741 | 2006-03-06 20:47:33 +0000 | [diff] [blame] | 1194 | int sed_main(int argc, char **argv) |
Eric Andersen | 6b6b3f6 | 1999-10-28 16:06:25 +0000 | [diff] [blame] | 1195 | { |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 1196 | enum { |
| 1197 | OPT_in_place = 1 << 0, |
| 1198 | }; |
Denis Vlasenko | 67b23e6 | 2006-10-03 21:00:06 +0000 | [diff] [blame] | 1199 | unsigned opt; |
Denis Vlasenko | b97c984 | 2006-10-01 21:05:12 +0000 | [diff] [blame] | 1200 | llist_t *opt_e, *opt_f; |
| 1201 | int status = EXIT_SUCCESS; |
Eric Andersen | 6b6b3f6 | 1999-10-28 16:06:25 +0000 | [diff] [blame] | 1202 | |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 1203 | bbg.sed_cmd_tail = &bbg.sed_cmd_head; |
Rob Landley | e3f5a3f | 2006-05-09 03:53:55 +0000 | [diff] [blame] | 1204 | |
Mark Whitley | 858c1ad | 2000-07-11 21:38:47 +0000 | [diff] [blame] | 1205 | /* destroy command strings on exit */ |
Rob Landley | 0b65628 | 2006-05-08 22:17:23 +0000 | [diff] [blame] | 1206 | if (ENABLE_FEATURE_CLEAN_UP) atexit(sed_free_and_close_stuff); |
Mark Whitley | 858c1ad | 2000-07-11 21:38:47 +0000 | [diff] [blame] | 1207 | |
Rob Landley | fae1dc8 | 2005-11-20 07:44:35 +0000 | [diff] [blame] | 1208 | /* Lie to autoconf when it starts asking stupid questions. */ |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 1209 | if (argc == 2 && !strcmp(argv[1], "--version")) { |
| 1210 | puts("This is not GNU sed version 4.0"); |
| 1211 | return 0; |
Eric Andersen | c06f568 | 2004-02-04 10:57:46 +0000 | [diff] [blame] | 1212 | } |
Eric Andersen | c06f568 | 2004-02-04 10:57:46 +0000 | [diff] [blame] | 1213 | |
Mark Whitley | 6315ce6 | 2000-07-10 22:55:51 +0000 | [diff] [blame] | 1214 | /* do normal option parsing */ |
Denis Vlasenko | b97c984 | 2006-10-01 21:05:12 +0000 | [diff] [blame] | 1215 | opt_e = opt_f = NULL; |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 1216 | opt_complementary = "e::f::" /* can occur multiple times */ |
| 1217 | "nn"; /* count -n */ |
| 1218 | opt = getopt32(argc, argv, "irne:f:", &opt_e, &opt_f, |
| 1219 | &bbg.be_quiet); /* counter for -n */ |
| 1220 | argc -= optind; |
| 1221 | argv += optind; |
| 1222 | if (opt & OPT_in_place) { // -i |
Denis Vlasenko | 750fc6d | 2006-09-22 08:56:03 +0000 | [diff] [blame] | 1223 | atexit(cleanup_outname); |
| 1224 | } |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 1225 | if (opt & 0x2) bbg.regex_type |= REG_EXTENDED; // -r |
| 1226 | //if (opt & 0x4) bbg.be_quiet++; // -n |
Denis Vlasenko | 750fc6d | 2006-09-22 08:56:03 +0000 | [diff] [blame] | 1227 | if (opt & 0x8) { // -e |
Denis Vlasenko | 67b23e6 | 2006-10-03 21:00:06 +0000 | [diff] [blame] | 1228 | /* getopt32 reverses order of arguments, handle it */ |
Denis Vlasenko | e2016e1 | 2006-10-01 21:37:40 +0000 | [diff] [blame] | 1229 | add_cmds_link(opt_e); |
Denis Vlasenko | 750fc6d | 2006-09-22 08:56:03 +0000 | [diff] [blame] | 1230 | } |
| 1231 | if (opt & 0x10) { // -f |
Denis Vlasenko | 67b23e6 | 2006-10-03 21:00:06 +0000 | [diff] [blame] | 1232 | /* getopt32 reverses order of arguments, handle it */ |
Denis Vlasenko | e2016e1 | 2006-10-01 21:37:40 +0000 | [diff] [blame] | 1233 | add_files_link(opt_f); |
Eric Andersen | 6b6b3f6 | 1999-10-28 16:06:25 +0000 | [diff] [blame] | 1234 | } |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 1235 | /* if we didn't get a pattern from -e or -f, use argv[0] */ |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 1236 | if (!(opt & 0x18)) { |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 1237 | if (!argc) |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 1238 | bb_show_usage(); |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 1239 | add_cmd_block(*argv++); |
| 1240 | argc--; |
Mark Whitley | 6315ce6 | 2000-07-10 22:55:51 +0000 | [diff] [blame] | 1241 | } |
Glenn L McGrath | 42c2573 | 2003-10-04 05:27:56 +0000 | [diff] [blame] | 1242 | /* Flush any unfinished commands. */ |
| 1243 | add_cmd(""); |
Mark Whitley | 6315ce6 | 2000-07-10 22:55:51 +0000 | [diff] [blame] | 1244 | |
Rob Landley | 53302f8 | 2004-02-18 09:54:15 +0000 | [diff] [blame] | 1245 | /* By default, we write to stdout */ |
Denis Vlasenko | b97c984 | 2006-10-01 21:05:12 +0000 | [diff] [blame] | 1246 | bbg.nonstdout = stdout; |
Rob Landley | 53302f8 | 2004-02-18 09:54:15 +0000 | [diff] [blame] | 1247 | |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 1248 | /* argv[0..(argc-1)] should be names of file to process. If no |
Mark Whitley | 6315ce6 | 2000-07-10 22:55:51 +0000 | [diff] [blame] | 1249 | * files were specified or '-' was specified, take input from stdin. |
| 1250 | * Otherwise, we process all the files specified. */ |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 1251 | if (argv[0] == NULL) { |
| 1252 | if (opt & OPT_in_place) |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 1253 | bb_error_msg_and_die(bb_msg_requires_arg, "-i"); |
Rob Landley | dcc2866 | 2004-11-25 07:21:47 +0000 | [diff] [blame] | 1254 | add_input_file(stdin); |
| 1255 | process_files(); |
Glenn L McGrath | 8d6395d | 2003-04-08 11:56:11 +0000 | [diff] [blame] | 1256 | } else { |
Mark Whitley | 6315ce6 | 2000-07-10 22:55:51 +0000 | [diff] [blame] | 1257 | int i; |
| 1258 | FILE *file; |
Glenn L McGrath | 8d6395d | 2003-04-08 11:56:11 +0000 | [diff] [blame] | 1259 | |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 1260 | for (i = 0; i < argc; i++) { |
Denis Vlasenko | d18a3a2 | 2006-10-25 12:46:03 +0000 | [diff] [blame] | 1261 | struct stat statbuf; |
| 1262 | int nonstdoutfd; |
| 1263 | |
Denis Vlasenko | 9f73944 | 2006-12-16 23:49:13 +0000 | [diff] [blame] | 1264 | if (LONE_DASH(argv[i]) && !(opt & OPT_in_place)) { |
Rob Landley | dcc2866 | 2004-11-25 07:21:47 +0000 | [diff] [blame] | 1265 | add_input_file(stdin); |
| 1266 | process_files(); |
Denis Vlasenko | d18a3a2 | 2006-10-25 12:46:03 +0000 | [diff] [blame] | 1267 | continue; |
Glenn L McGrath | 8aac05b | 2003-09-14 04:06:12 +0000 | [diff] [blame] | 1268 | } |
Denis Vlasenko | ddec5af | 2006-10-26 23:25:17 +0000 | [diff] [blame] | 1269 | file = fopen_or_warn(argv[i], "r"); |
Denis Vlasenko | d18a3a2 | 2006-10-25 12:46:03 +0000 | [diff] [blame] | 1270 | if (!file) { |
| 1271 | status = EXIT_FAILURE; |
| 1272 | continue; |
| 1273 | } |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 1274 | if (!(opt & OPT_in_place)) { |
Denis Vlasenko | d18a3a2 | 2006-10-25 12:46:03 +0000 | [diff] [blame] | 1275 | add_input_file(file); |
| 1276 | continue; |
| 1277 | } |
| 1278 | |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 1279 | bbg.outname = xasprintf("%sXXXXXX", argv[i]); |
| 1280 | nonstdoutfd = mkstemp(bbg.outname); |
| 1281 | if (-1 == nonstdoutfd) |
Denis Vlasenko | d18a3a2 | 2006-10-25 12:46:03 +0000 | [diff] [blame] | 1282 | bb_error_msg_and_die("no temp file"); |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 1283 | bbg.nonstdout = fdopen(nonstdoutfd, "w"); |
Denis Vlasenko | d18a3a2 | 2006-10-25 12:46:03 +0000 | [diff] [blame] | 1284 | |
| 1285 | /* Set permissions of output file */ |
| 1286 | |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 1287 | fstat(fileno(file), &statbuf); |
| 1288 | fchmod(nonstdoutfd, statbuf.st_mode); |
Denis Vlasenko | d18a3a2 | 2006-10-25 12:46:03 +0000 | [diff] [blame] | 1289 | add_input_file(file); |
| 1290 | process_files(); |
| 1291 | fclose(bbg.nonstdout); |
| 1292 | |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 1293 | bbg.nonstdout = stdout; |
| 1294 | /* unlink(argv[i]); */ |
| 1295 | // FIXME: error check / message? |
Denis Vlasenko | 2f8f71b | 2006-12-10 02:09:12 +0000 | [diff] [blame] | 1296 | rename(bbg.outname, argv[i]); |
Denis Vlasenko | d18a3a2 | 2006-10-25 12:46:03 +0000 | [diff] [blame] | 1297 | free(bbg.outname); |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 1298 | bbg.outname = 0; |
Mark Whitley | 6315ce6 | 2000-07-10 22:55:51 +0000 | [diff] [blame] | 1299 | } |
Denis Vlasenko | 8077850 | 2006-10-25 12:46:46 +0000 | [diff] [blame] | 1300 | if (bbg.input_file_count > bbg.current_input_file) |
| 1301 | process_files(); |
Mark Whitley | 6315ce6 | 2000-07-10 22:55:51 +0000 | [diff] [blame] | 1302 | } |
Glenn L McGrath | 8d6395d | 2003-04-08 11:56:11 +0000 | [diff] [blame] | 1303 | |
Matt Kraai | a5f09c6 | 2001-11-12 16:44:55 +0000 | [diff] [blame] | 1304 | return status; |
Eric Andersen | 6b6b3f6 | 1999-10-28 16:06:25 +0000 | [diff] [blame] | 1305 | } |