2005-09-23 15:38:49 +00:00
|
|
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/* vi: set sw=4 ts=4: */
|
1999-10-05 16:24:54 +00:00
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|
|
/*
|
2000-06-28 22:00:26 +00:00
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|
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* Mini grep implementation for busybox using libc regex.
|
1999-10-20 22:08:37 +00:00
|
|
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*
|
2001-10-24 05:00:29 +00:00
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* Copyright (C) 1999,2000,2001 by Lineo, inc. and Mark Whitley
|
2004-03-15 08:29:22 +00:00
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|
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* Copyright (C) 1999,2000,2001 by Mark Whitley <markw@codepoet.org>
|
1999-10-19 06:02:44 +00:00
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|
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*
|
2006-09-13 16:39:19 +00:00
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* Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
|
1999-10-05 16:24:54 +00:00
|
|
|
*/
|
2005-09-23 15:38:49 +00:00
|
|
|
/* BB_AUDIT SUSv3 defects - unsupported option -x. */
|
|
|
|
/* BB_AUDIT GNU defects - always acts as -a. */
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/* http://www.opengroup.org/onlinepubs/007904975/utilities/grep.html */
|
2003-06-20 09:01:58 +00:00
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|
|
/*
|
2006-02-28 10:10:19 +00:00
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|
|
* 2004,2006 (C) Vladimir Oleynik <dzo@simtreas.ru> -
|
2004-05-26 09:46:41 +00:00
|
|
|
* correction "-e pattern1 -e pattern2" logic and more optimizations.
|
2006-02-28 10:10:19 +00:00
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|
|
* precompiled regex
|
2006-09-29 20:58:53 +00:00
|
|
|
*/
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|
|
|
/*
|
|
|
|
* (C) 2006 Jac Goudsmit added -o option
|
|
|
|
*/
|
1999-10-05 16:24:54 +00:00
|
|
|
|
2007-05-26 19:00:18 +00:00
|
|
|
#include "libbb.h"
|
2005-09-14 16:59:11 +00:00
|
|
|
#include "xregex.h"
|
2000-06-28 22:00:26 +00:00
|
|
|
|
|
|
|
/* options */
|
2007-02-25 02:38:20 +00:00
|
|
|
#define OPTSTR_GREP \
|
2007-07-15 12:39:08 +00:00
|
|
|
"lnqvscFiHhe:f:Lorm:" \
|
2007-02-25 02:38:20 +00:00
|
|
|
USE_FEATURE_GREP_CONTEXT("A:B:C:") \
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|
|
|
USE_FEATURE_GREP_EGREP_ALIAS("E") \
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|
|
|
USE_DESKTOP("w") \
|
2007-02-25 02:38:54 +00:00
|
|
|
"aI"
|
|
|
|
/* ignored: -a "assume all files to be text" */
|
|
|
|
/* ignored: -I "assume binary files have no matches" */
|
2007-02-25 02:38:20 +00:00
|
|
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|
|
|
|
enum {
|
2007-07-15 12:39:08 +00:00
|
|
|
OPTBIT_l, /* list matched file names only */
|
|
|
|
OPTBIT_n, /* print line# */
|
|
|
|
OPTBIT_q, /* quiet - exit(0) of first match */
|
|
|
|
OPTBIT_v, /* invert the match, to select non-matching lines */
|
|
|
|
OPTBIT_s, /* suppress errors about file open errors */
|
|
|
|
OPTBIT_c, /* count matches per file (suppresses normal output) */
|
|
|
|
OPTBIT_F, /* literal match */
|
|
|
|
OPTBIT_i, /* case-insensitive */
|
|
|
|
OPTBIT_H, /* force filename display */
|
|
|
|
OPTBIT_h, /* inhibit filename display */
|
|
|
|
OPTBIT_e, /* -e PATTERN */
|
|
|
|
OPTBIT_f, /* -f FILE_WITH_PATTERNS */
|
|
|
|
OPTBIT_L, /* list unmatched file names only */
|
|
|
|
OPTBIT_o, /* show only matching parts of lines */
|
|
|
|
OPTBIT_r, /* recurse dirs */
|
|
|
|
OPTBIT_m, /* -m MAX_MATCHES */
|
|
|
|
USE_FEATURE_GREP_CONTEXT( OPTBIT_A ,) /* -A NUM: after-match context */
|
|
|
|
USE_FEATURE_GREP_CONTEXT( OPTBIT_B ,) /* -B NUM: before-match context */
|
|
|
|
USE_FEATURE_GREP_CONTEXT( OPTBIT_C ,) /* -C NUM: -A and -B combined */
|
|
|
|
USE_FEATURE_GREP_EGREP_ALIAS(OPTBIT_E ,) /* extended regexp */
|
|
|
|
USE_DESKTOP( OPTBIT_w ,) /* whole word match */
|
2007-02-25 02:38:20 +00:00
|
|
|
OPT_l = 1 << OPTBIT_l,
|
|
|
|
OPT_n = 1 << OPTBIT_n,
|
|
|
|
OPT_q = 1 << OPTBIT_q,
|
|
|
|
OPT_v = 1 << OPTBIT_v,
|
|
|
|
OPT_s = 1 << OPTBIT_s,
|
|
|
|
OPT_c = 1 << OPTBIT_c,
|
|
|
|
OPT_F = 1 << OPTBIT_F,
|
|
|
|
OPT_i = 1 << OPTBIT_i,
|
|
|
|
OPT_H = 1 << OPTBIT_H,
|
|
|
|
OPT_h = 1 << OPTBIT_h,
|
|
|
|
OPT_e = 1 << OPTBIT_e,
|
|
|
|
OPT_f = 1 << OPTBIT_f,
|
|
|
|
OPT_L = 1 << OPTBIT_L,
|
|
|
|
OPT_o = 1 << OPTBIT_o,
|
|
|
|
OPT_r = 1 << OPTBIT_r,
|
2007-07-15 12:39:08 +00:00
|
|
|
OPT_m = 1 << OPTBIT_m,
|
2007-06-08 15:41:27 +00:00
|
|
|
OPT_A = USE_FEATURE_GREP_CONTEXT( (1 << OPTBIT_A)) + 0,
|
|
|
|
OPT_B = USE_FEATURE_GREP_CONTEXT( (1 << OPTBIT_B)) + 0,
|
|
|
|
OPT_C = USE_FEATURE_GREP_CONTEXT( (1 << OPTBIT_C)) + 0,
|
|
|
|
OPT_E = USE_FEATURE_GREP_EGREP_ALIAS((1 << OPTBIT_E)) + 0,
|
|
|
|
OPT_w = USE_DESKTOP( (1 << OPTBIT_w)) + 0,
|
2007-02-25 02:38:20 +00:00
|
|
|
};
|
|
|
|
|
2007-06-08 15:41:27 +00:00
|
|
|
#define PRINT_FILES_WITH_MATCHES (option_mask32 & OPT_l)
|
|
|
|
#define PRINT_LINE_NUM (option_mask32 & OPT_n)
|
|
|
|
#define BE_QUIET (option_mask32 & OPT_q)
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|
|
|
#define SUPPRESS_ERR_MSGS (option_mask32 & OPT_s)
|
|
|
|
#define PRINT_MATCH_COUNTS (option_mask32 & OPT_c)
|
|
|
|
#define FGREP_FLAG (option_mask32 & OPT_F)
|
2007-02-25 02:38:20 +00:00
|
|
|
#define PRINT_FILES_WITHOUT_MATCHES (option_mask32 & OPT_L)
|
2003-06-20 09:01:58 +00:00
|
|
|
|
2007-09-10 12:18:32 +00:00
|
|
|
struct globals {
|
|
|
|
int max_matches;
|
|
|
|
int reflags;
|
|
|
|
smalluint invert_search;
|
|
|
|
smalluint print_filename;
|
|
|
|
smalluint open_errors;
|
2005-09-23 15:38:49 +00:00
|
|
|
#if ENABLE_FEATURE_GREP_CONTEXT
|
2007-09-10 12:18:32 +00:00
|
|
|
smalluint did_print_line;
|
|
|
|
int lines_before;
|
|
|
|
int lines_after;
|
|
|
|
char **before_buf;
|
|
|
|
int last_line_printed;
|
|
|
|
#endif
|
|
|
|
/* globals used internally */
|
|
|
|
llist_t *pattern_head; /* growable list of patterns to match */
|
|
|
|
const char *cur_file; /* the current file we are reading */
|
|
|
|
};
|
|
|
|
#define G (*(struct globals*)&bb_common_bufsiz1)
|
|
|
|
#define INIT_G() \
|
|
|
|
do { \
|
|
|
|
struct G_sizecheck { \
|
|
|
|
char G_sizecheck[sizeof(G) > COMMON_BUFSIZE ? -1 : 1]; \
|
|
|
|
}; \
|
|
|
|
} while (0)
|
|
|
|
#define max_matches (G.max_matches )
|
|
|
|
#define reflags (G.reflags )
|
|
|
|
#define invert_search (G.invert_search )
|
|
|
|
#define print_filename (G.print_filename )
|
|
|
|
#define open_errors (G.open_errors )
|
|
|
|
#define did_print_line (G.did_print_line )
|
|
|
|
#define lines_before (G.lines_before )
|
|
|
|
#define lines_after (G.lines_after )
|
|
|
|
#define before_buf (G.before_buf )
|
|
|
|
#define last_line_printed (G.last_line_printed )
|
|
|
|
#define pattern_head (G.pattern_head )
|
|
|
|
#define cur_file (G.cur_file )
|
|
|
|
|
2000-06-28 22:00:26 +00:00
|
|
|
|
2007-02-25 02:37:49 +00:00
|
|
|
typedef struct grep_list_data_t {
|
2006-02-28 10:10:19 +00:00
|
|
|
char *pattern;
|
|
|
|
regex_t preg;
|
|
|
|
#define PATTERN_MEM_A 1
|
|
|
|
#define COMPILED 2
|
|
|
|
int flg_mem_alocated_compiled;
|
|
|
|
} grep_list_data_t;
|
2001-05-24 18:36:18 +00:00
|
|
|
|
2007-09-10 12:18:32 +00:00
|
|
|
|
2001-02-09 00:41:10 +00:00
|
|
|
static void print_line(const char *line, int linenum, char decoration)
|
|
|
|
{
|
2005-09-23 15:38:49 +00:00
|
|
|
#if ENABLE_FEATURE_GREP_CONTEXT
|
2007-07-15 12:38:18 +00:00
|
|
|
/* Happens when we go to next file, immediately hit match
|
|
|
|
* and try to print prev context... from prev file! Don't do it */
|
|
|
|
if (linenum < 1)
|
|
|
|
return;
|
2004-04-14 17:51:38 +00:00
|
|
|
/* possibly print the little '--' separator */
|
2007-07-15 12:38:18 +00:00
|
|
|
if ((lines_before || lines_after) && did_print_line &&
|
|
|
|
last_line_printed != linenum - 1) {
|
2001-02-09 00:41:10 +00:00
|
|
|
puts("--");
|
|
|
|
}
|
2007-07-15 12:38:18 +00:00
|
|
|
/* guard against printing "--" before first line of first file */
|
|
|
|
did_print_line = 1;
|
2001-02-09 00:41:10 +00:00
|
|
|
last_line_printed = linenum;
|
|
|
|
#endif
|
2006-10-14 14:24:30 +00:00
|
|
|
if (print_filename)
|
2001-02-09 00:41:10 +00:00
|
|
|
printf("%s%c", cur_file, decoration);
|
2005-09-23 15:38:49 +00:00
|
|
|
if (PRINT_LINE_NUM)
|
2001-02-09 00:41:10 +00:00
|
|
|
printf("%i%c", linenum, decoration);
|
2006-09-29 20:58:53 +00:00
|
|
|
/* Emulate weird GNU grep behavior with -ov */
|
2007-07-15 12:38:18 +00:00
|
|
|
if ((option_mask32 & (OPT_v|OPT_o)) != (OPT_v|OPT_o))
|
2006-09-29 20:58:53 +00:00
|
|
|
puts(line);
|
2001-02-09 00:41:10 +00:00
|
|
|
}
|
1999-11-08 17:00:52 +00:00
|
|
|
|
2003-06-20 09:01:58 +00:00
|
|
|
static int grep_file(FILE *file)
|
2000-06-28 22:00:26 +00:00
|
|
|
{
|
2003-06-20 09:01:58 +00:00
|
|
|
char *line;
|
2007-09-10 12:18:32 +00:00
|
|
|
smalluint found;
|
2000-06-28 22:00:26 +00:00
|
|
|
int linenum = 0;
|
2000-08-06 15:25:53 +00:00
|
|
|
int nmatches = 0;
|
2006-09-29 20:58:53 +00:00
|
|
|
regmatch_t regmatch;
|
2005-09-23 15:38:49 +00:00
|
|
|
#if ENABLE_FEATURE_GREP_CONTEXT
|
2001-02-09 00:41:10 +00:00
|
|
|
int print_n_lines_after = 0;
|
|
|
|
int curpos = 0; /* track where we are in the circular 'before' buffer */
|
|
|
|
int idx = 0; /* used for iteration through the circular buffer */
|
2007-07-15 12:39:08 +00:00
|
|
|
#else
|
|
|
|
enum { print_n_lines_after = 0 };
|
2005-09-23 15:38:49 +00:00
|
|
|
#endif /* ENABLE_FEATURE_GREP_CONTEXT */
|
2000-06-28 22:00:26 +00:00
|
|
|
|
2006-10-12 22:43:20 +00:00
|
|
|
while ((line = xmalloc_getline(file)) != NULL) {
|
2003-04-27 01:50:57 +00:00
|
|
|
llist_t *pattern_ptr = pattern_head;
|
2007-11-04 00:46:03 +00:00
|
|
|
grep_list_data_t *gl = gl; /* for gcc */
|
2003-04-27 01:50:57 +00:00
|
|
|
|
2000-06-28 22:00:26 +00:00
|
|
|
linenum++;
|
2007-09-10 12:18:32 +00:00
|
|
|
found = 0;
|
2003-04-27 01:50:57 +00:00
|
|
|
while (pattern_ptr) {
|
2006-02-28 10:10:19 +00:00
|
|
|
gl = (grep_list_data_t *)pattern_ptr->data;
|
2005-09-23 15:38:49 +00:00
|
|
|
if (FGREP_FLAG) {
|
2007-09-10 12:23:27 +00:00
|
|
|
found |= (strstr(line, gl->pattern) != NULL);
|
2003-04-27 01:50:57 +00:00
|
|
|
} else {
|
2006-09-29 21:04:12 +00:00
|
|
|
if (!(gl->flg_mem_alocated_compiled & COMPILED)) {
|
2006-02-28 10:10:19 +00:00
|
|
|
gl->flg_mem_alocated_compiled |= COMPILED;
|
|
|
|
xregcomp(&(gl->preg), gl->pattern, reflags);
|
|
|
|
}
|
2006-09-29 20:58:53 +00:00
|
|
|
regmatch.rm_so = 0;
|
|
|
|
regmatch.rm_eo = 0;
|
2007-02-25 02:38:20 +00:00
|
|
|
if (regexec(&(gl->preg), line, 1, ®match, 0) == 0) {
|
|
|
|
if (!(option_mask32 & OPT_w))
|
2007-09-10 12:18:32 +00:00
|
|
|
found = 1;
|
2007-02-25 02:38:20 +00:00
|
|
|
else {
|
|
|
|
char c = ' ';
|
|
|
|
if (regmatch.rm_so)
|
|
|
|
c = line[regmatch.rm_so - 1];
|
|
|
|
if (!isalnum(c) && c != '_') {
|
|
|
|
c = line[regmatch.rm_eo];
|
|
|
|
if (!c || (!isalnum(c) && c != '_'))
|
2007-09-10 12:18:32 +00:00
|
|
|
found = 1;
|
2007-02-25 02:38:20 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
2003-04-27 01:50:57 +00:00
|
|
|
}
|
2007-09-10 12:18:32 +00:00
|
|
|
/* If it's non-inverted search, we can stop
|
|
|
|
* at first match */
|
|
|
|
if (found && !invert_search)
|
|
|
|
goto do_found;
|
2003-06-20 09:01:58 +00:00
|
|
|
pattern_ptr = pattern_ptr->link;
|
|
|
|
} /* while (pattern_ptr) */
|
|
|
|
|
2007-09-10 12:18:32 +00:00
|
|
|
if (found ^ invert_search) {
|
|
|
|
do_found:
|
2007-02-25 02:37:49 +00:00
|
|
|
/* keep track of matches */
|
|
|
|
nmatches++;
|
2001-05-24 18:36:18 +00:00
|
|
|
|
2007-07-15 12:38:18 +00:00
|
|
|
/* quiet/print (non)matching file names only? */
|
|
|
|
if (option_mask32 & (OPT_q|OPT_l|OPT_L)) {
|
|
|
|
free(line); /* we don't need line anymore */
|
|
|
|
if (BE_QUIET) {
|
|
|
|
/* manpage says about -q:
|
|
|
|
* "exit immediately with zero status
|
|
|
|
* if any match is found,
|
|
|
|
* even if errors were detected" */
|
|
|
|
exit(0);
|
|
|
|
}
|
|
|
|
/* if we're just printing filenames, we stop after the first match */
|
|
|
|
if (PRINT_FILES_WITH_MATCHES) {
|
|
|
|
puts(cur_file);
|
|
|
|
/* fall thru to "return 1" */
|
|
|
|
}
|
|
|
|
/* OPT_L aka PRINT_FILES_WITHOUT_MATCHES: return early */
|
|
|
|
return 1; /* one match */
|
|
|
|
}
|
2001-05-24 18:36:18 +00:00
|
|
|
|
2007-07-15 12:39:08 +00:00
|
|
|
#if ENABLE_FEATURE_GREP_CONTEXT
|
|
|
|
/* Were we printing context and saw next (unwanted) match? */
|
|
|
|
if ((option_mask32 & OPT_m) && nmatches > max_matches)
|
|
|
|
break;
|
|
|
|
#endif
|
|
|
|
|
2007-02-25 02:37:49 +00:00
|
|
|
/* print the matched line */
|
|
|
|
if (PRINT_MATCH_COUNTS == 0) {
|
2005-09-23 15:38:49 +00:00
|
|
|
#if ENABLE_FEATURE_GREP_CONTEXT
|
2007-02-25 02:37:49 +00:00
|
|
|
int prevpos = (curpos == 0) ? lines_before - 1 : curpos - 1;
|
|
|
|
|
|
|
|
/* if we were told to print 'before' lines and there is at least
|
|
|
|
* one line in the circular buffer, print them */
|
|
|
|
if (lines_before && before_buf[prevpos] != NULL) {
|
|
|
|
int first_buf_entry_line_num = linenum - lines_before;
|
|
|
|
|
|
|
|
/* advance to the first entry in the circular buffer, and
|
|
|
|
* figure out the line number is of the first line in the
|
|
|
|
* buffer */
|
|
|
|
idx = curpos;
|
|
|
|
while (before_buf[idx] == NULL) {
|
|
|
|
idx = (idx + 1) % lines_before;
|
|
|
|
first_buf_entry_line_num++;
|
2001-02-09 00:41:10 +00:00
|
|
|
}
|
|
|
|
|
2007-02-25 02:37:49 +00:00
|
|
|
/* now print each line in the buffer, clearing them as we go */
|
|
|
|
while (before_buf[idx] != NULL) {
|
|
|
|
print_line(before_buf[idx], first_buf_entry_line_num, '-');
|
|
|
|
free(before_buf[idx]);
|
|
|
|
before_buf[idx] = NULL;
|
|
|
|
idx = (idx + 1) % lines_before;
|
|
|
|
first_buf_entry_line_num++;
|
2006-09-29 20:58:53 +00:00
|
|
|
}
|
2001-05-24 18:36:18 +00:00
|
|
|
}
|
2007-02-25 02:37:49 +00:00
|
|
|
|
|
|
|
/* make a note that we need to print 'after' lines */
|
|
|
|
print_n_lines_after = lines_after;
|
|
|
|
#endif
|
2007-02-25 02:38:20 +00:00
|
|
|
if (option_mask32 & OPT_o) {
|
2007-11-04 00:46:03 +00:00
|
|
|
if (FGREP_FLAG) {
|
|
|
|
/* -Fo just prints the pattern
|
|
|
|
* (unless -v: -Fov doesnt print anything at all) */
|
|
|
|
if (found)
|
|
|
|
print_line(gl->pattern, linenum, ':');
|
|
|
|
} else {
|
|
|
|
line[regmatch.rm_eo] = '\0';
|
|
|
|
print_line(line + regmatch.rm_so, linenum, ':');
|
|
|
|
}
|
2007-02-25 02:37:49 +00:00
|
|
|
} else {
|
|
|
|
print_line(line, linenum, ':');
|
|
|
|
}
|
2001-02-09 00:41:10 +00:00
|
|
|
}
|
2007-02-25 02:37:49 +00:00
|
|
|
}
|
2005-09-23 15:38:49 +00:00
|
|
|
#if ENABLE_FEATURE_GREP_CONTEXT
|
2007-02-25 02:37:49 +00:00
|
|
|
else { /* no match */
|
2007-07-15 12:38:18 +00:00
|
|
|
/* if we need to print some context lines after the last match, do so */
|
2007-07-15 12:39:08 +00:00
|
|
|
if (print_n_lines_after) {
|
2007-07-15 12:38:18 +00:00
|
|
|
print_line(line, linenum, '-');
|
|
|
|
print_n_lines_after--;
|
|
|
|
} else if (lines_before) {
|
|
|
|
/* Add the line to the circular 'before' buffer */
|
2007-02-25 02:37:49 +00:00
|
|
|
free(before_buf[curpos]);
|
2007-07-15 12:38:18 +00:00
|
|
|
before_buf[curpos] = line;
|
2007-02-25 02:37:49 +00:00
|
|
|
curpos = (curpos + 1) % lines_before;
|
2007-07-15 12:38:18 +00:00
|
|
|
/* avoid free(line) - we took line */
|
2007-07-15 12:39:08 +00:00
|
|
|
line = NULL;
|
2001-01-04 15:11:52 +00:00
|
|
|
}
|
2007-02-25 02:37:49 +00:00
|
|
|
}
|
2001-02-09 00:41:10 +00:00
|
|
|
|
2005-09-23 15:38:49 +00:00
|
|
|
#endif /* ENABLE_FEATURE_GREP_CONTEXT */
|
2000-06-28 22:00:26 +00:00
|
|
|
free(line);
|
2007-07-15 12:39:08 +00:00
|
|
|
|
|
|
|
/* Did we print all context after last requested match? */
|
|
|
|
if ((option_mask32 & OPT_m)
|
|
|
|
&& !print_n_lines_after && nmatches == max_matches)
|
|
|
|
break;
|
1999-11-08 17:00:52 +00:00
|
|
|
}
|
2000-07-18 18:37:01 +00:00
|
|
|
|
2001-05-14 19:40:32 +00:00
|
|
|
/* special-case file post-processing for options where we don't print line
|
2001-05-21 21:13:00 +00:00
|
|
|
* matches, just filenames and possibly match counts */
|
2001-05-14 19:40:32 +00:00
|
|
|
|
2001-05-21 21:13:00 +00:00
|
|
|
/* grep -c: print [filename:]count, even if count is zero */
|
2005-09-23 15:38:49 +00:00
|
|
|
if (PRINT_MATCH_COUNTS) {
|
2006-10-14 14:24:30 +00:00
|
|
|
if (print_filename)
|
2001-05-21 21:13:00 +00:00
|
|
|
printf("%s:", cur_file);
|
2006-10-03 19:56:34 +00:00
|
|
|
printf("%d\n", nmatches);
|
2001-05-14 19:40:32 +00:00
|
|
|
}
|
2001-05-21 21:13:00 +00:00
|
|
|
|
2007-07-15 12:38:18 +00:00
|
|
|
/* grep -L: print just the filename */
|
|
|
|
if (PRINT_FILES_WITHOUT_MATCHES) {
|
|
|
|
/* nmatches is zero, no need to check it:
|
|
|
|
* we return 1 early if we detected a match
|
|
|
|
* and PRINT_FILES_WITHOUT_MATCHES is set */
|
2004-05-26 11:47:55 +00:00
|
|
|
puts(cur_file);
|
|
|
|
}
|
|
|
|
|
2003-06-20 09:01:58 +00:00
|
|
|
return nmatches;
|
2001-05-24 18:36:18 +00:00
|
|
|
}
|
|
|
|
|
2006-02-28 10:10:19 +00:00
|
|
|
#if ENABLE_FEATURE_CLEAN_UP
|
|
|
|
#define new_grep_list_data(p, m) add_grep_list_data(p, m)
|
2007-09-10 12:18:32 +00:00
|
|
|
static char *add_grep_list_data(char *pattern, int flg_used_mem)
|
2006-02-28 10:10:19 +00:00
|
|
|
#else
|
|
|
|
#define new_grep_list_data(p, m) add_grep_list_data(p)
|
2007-09-10 12:18:32 +00:00
|
|
|
static char *add_grep_list_data(char *pattern)
|
2006-02-28 10:10:19 +00:00
|
|
|
#endif
|
|
|
|
{
|
2007-09-10 12:18:32 +00:00
|
|
|
grep_list_data_t *gl = xzalloc(sizeof(*gl));
|
2006-02-28 10:10:19 +00:00
|
|
|
gl->pattern = pattern;
|
|
|
|
#if ENABLE_FEATURE_CLEAN_UP
|
|
|
|
gl->flg_mem_alocated_compiled = flg_used_mem;
|
|
|
|
#else
|
2007-09-10 12:18:32 +00:00
|
|
|
/*gl->flg_mem_alocated_compiled = 0;*/
|
2006-02-28 10:10:19 +00:00
|
|
|
#endif
|
|
|
|
return (char *)gl;
|
|
|
|
}
|
|
|
|
|
2003-06-20 09:01:58 +00:00
|
|
|
static void load_regexes_from_file(llist_t *fopt)
|
2001-05-24 18:36:18 +00:00
|
|
|
{
|
|
|
|
char *line;
|
2003-06-20 09:01:58 +00:00
|
|
|
FILE *f;
|
|
|
|
|
2006-09-29 21:04:12 +00:00
|
|
|
while (fopt) {
|
2003-06-20 09:01:58 +00:00
|
|
|
llist_t *cur = fopt;
|
|
|
|
char *ffile = cur->data;
|
|
|
|
|
|
|
|
fopt = cur->link;
|
|
|
|
free(cur);
|
2006-08-03 15:41:12 +00:00
|
|
|
f = xfopen(ffile, "r");
|
2006-10-12 22:43:20 +00:00
|
|
|
while ((line = xmalloc_getline(f)) != NULL) {
|
2006-05-26 23:44:51 +00:00
|
|
|
llist_add_to(&pattern_head,
|
2006-02-28 10:10:19 +00:00
|
|
|
new_grep_list_data(line, PATTERN_MEM_A));
|
2004-10-08 08:10:57 +00:00
|
|
|
}
|
2001-05-24 18:36:18 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2006-10-27 23:42:25 +00:00
|
|
|
static int file_action_grep(const char *filename, struct stat *statbuf, void* matched, int depth)
|
2006-10-14 14:24:30 +00:00
|
|
|
{
|
|
|
|
FILE *file = fopen(filename, "r");
|
|
|
|
if (file == NULL) {
|
|
|
|
if (!SUPPRESS_ERR_MSGS)
|
2007-10-01 11:58:38 +00:00
|
|
|
bb_simple_perror_msg(cur_file);
|
2006-10-14 14:24:30 +00:00
|
|
|
open_errors = 1;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
cur_file = filename;
|
|
|
|
*(int*)matched += grep_file(file);
|
2006-10-15 18:38:01 +00:00
|
|
|
fclose(file);
|
2006-10-14 14:24:30 +00:00
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int grep_dir(const char *dir)
|
|
|
|
{
|
|
|
|
int matched = 0;
|
|
|
|
recursive_action(dir,
|
2007-04-08 10:52:28 +00:00
|
|
|
/* recurse=yes */ ACTION_RECURSE |
|
|
|
|
/* followLinks=no */
|
|
|
|
/* depthFirst=yes */ ACTION_DEPTHFIRST,
|
2006-10-14 14:24:30 +00:00
|
|
|
/* fileAction= */ file_action_grep,
|
|
|
|
/* dirAction= */ NULL,
|
2006-10-27 23:42:25 +00:00
|
|
|
/* userData= */ &matched,
|
|
|
|
/* depth= */ 0);
|
2006-10-14 14:24:30 +00:00
|
|
|
return matched;
|
|
|
|
}
|
|
|
|
|
2007-10-11 10:05:36 +00:00
|
|
|
int grep_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
2006-03-06 20:47:33 +00:00
|
|
|
int grep_main(int argc, char **argv)
|
1999-10-05 16:24:54 +00:00
|
|
|
{
|
2003-06-20 09:01:58 +00:00
|
|
|
FILE *file;
|
|
|
|
int matched;
|
2007-07-15 12:39:08 +00:00
|
|
|
char *mopt;
|
2004-10-08 08:10:57 +00:00
|
|
|
llist_t *fopt = NULL;
|
2001-10-29 15:49:03 +00:00
|
|
|
|
2000-06-28 22:00:26 +00:00
|
|
|
/* do normal option parsing */
|
2005-09-23 15:38:49 +00:00
|
|
|
#if ENABLE_FEATURE_GREP_CONTEXT
|
2003-06-20 09:01:58 +00:00
|
|
|
char *slines_after;
|
|
|
|
char *slines_before;
|
|
|
|
char *Copt;
|
|
|
|
|
2006-10-03 21:00:06 +00:00
|
|
|
opt_complementary = "H-h:e::f::C-AB";
|
2007-08-18 15:32:12 +00:00
|
|
|
getopt32(argv,
|
2007-02-25 02:38:20 +00:00
|
|
|
OPTSTR_GREP,
|
2007-07-15 12:39:08 +00:00
|
|
|
&pattern_head, &fopt, &mopt,
|
2003-06-20 09:01:58 +00:00
|
|
|
&slines_after, &slines_before, &Copt);
|
|
|
|
|
2007-02-25 02:38:20 +00:00
|
|
|
if (option_mask32 & OPT_C) {
|
2006-10-22 11:42:51 +00:00
|
|
|
/* -C unsets prev -A and -B, but following -A or -B
|
|
|
|
may override it */
|
2007-02-25 02:38:20 +00:00
|
|
|
if (!(option_mask32 & OPT_A)) /* not overridden */
|
2003-06-20 09:01:58 +00:00
|
|
|
slines_after = Copt;
|
2007-02-25 02:38:20 +00:00
|
|
|
if (!(option_mask32 & OPT_B)) /* not overridden */
|
2003-06-20 09:01:58 +00:00
|
|
|
slines_before = Copt;
|
2007-02-25 02:38:20 +00:00
|
|
|
option_mask32 |= OPT_A|OPT_B; /* for parser */
|
2003-06-20 09:01:58 +00:00
|
|
|
}
|
2007-02-25 02:38:20 +00:00
|
|
|
if (option_mask32 & OPT_A) {
|
2006-10-14 14:24:30 +00:00
|
|
|
lines_after = xatoi_u(slines_after);
|
2003-06-20 09:01:58 +00:00
|
|
|
}
|
2007-02-25 02:38:20 +00:00
|
|
|
if (option_mask32 & OPT_B) {
|
2006-10-14 14:24:30 +00:00
|
|
|
lines_before = xatoi_u(slines_before);
|
2005-09-23 15:38:49 +00:00
|
|
|
}
|
2006-10-22 11:42:51 +00:00
|
|
|
/* sanity checks */
|
2007-02-25 02:38:20 +00:00
|
|
|
if (option_mask32 & (OPT_c|OPT_q|OPT_l|OPT_L)) {
|
|
|
|
option_mask32 &= ~OPT_n;
|
2003-06-20 09:01:58 +00:00
|
|
|
lines_before = 0;
|
|
|
|
lines_after = 0;
|
2006-09-29 21:04:12 +00:00
|
|
|
} else if (lines_before > 0)
|
2006-12-22 18:37:07 +00:00
|
|
|
before_buf = xzalloc(lines_before * sizeof(char *));
|
2003-06-20 09:01:58 +00:00
|
|
|
#else
|
|
|
|
/* with auto sanity checks */
|
2006-10-03 21:00:06 +00:00
|
|
|
opt_complementary = "H-h:e::f::c-n:q-n:l-n";
|
2007-08-18 15:32:12 +00:00
|
|
|
getopt32(argv, OPTSTR_GREP,
|
2007-07-15 12:39:08 +00:00
|
|
|
&pattern_head, &fopt, &mopt);
|
2003-06-20 09:01:58 +00:00
|
|
|
#endif
|
2007-07-15 12:39:08 +00:00
|
|
|
if (option_mask32 & OPT_m) {
|
|
|
|
max_matches = xatoi_u(mopt);
|
|
|
|
}
|
2007-02-25 02:38:20 +00:00
|
|
|
invert_search = ((option_mask32 & OPT_v) != 0); /* 0 | 1 */
|
2005-09-23 15:38:49 +00:00
|
|
|
|
2006-02-28 10:10:19 +00:00
|
|
|
if (pattern_head != NULL) {
|
2007-04-04 20:52:03 +00:00
|
|
|
/* convert char **argv to grep_list_data_t */
|
2006-02-28 10:10:19 +00:00
|
|
|
llist_t *cur;
|
|
|
|
|
2006-09-29 21:04:12 +00:00
|
|
|
for (cur = pattern_head; cur; cur = cur->link)
|
2006-02-28 10:10:19 +00:00
|
|
|
cur->data = new_grep_list_data(cur->data, 0);
|
|
|
|
}
|
2007-02-25 02:38:20 +00:00
|
|
|
if (option_mask32 & OPT_f)
|
2003-06-20 09:01:58 +00:00
|
|
|
load_regexes_from_file(fopt);
|
|
|
|
|
2006-10-03 21:00:43 +00:00
|
|
|
if (ENABLE_FEATURE_GREP_FGREP_ALIAS && applet_name[0] == 'f')
|
2007-02-25 02:38:20 +00:00
|
|
|
option_mask32 |= OPT_F;
|
2005-07-31 22:41:05 +00:00
|
|
|
|
2007-02-25 02:38:20 +00:00
|
|
|
if (!(option_mask32 & (OPT_o | OPT_w)))
|
2006-09-29 20:58:53 +00:00
|
|
|
reflags = REG_NOSUB;
|
|
|
|
|
2007-09-10 12:18:32 +00:00
|
|
|
if (ENABLE_FEATURE_GREP_EGREP_ALIAS
|
|
|
|
&& (applet_name[0] == 'e' || (option_mask32 & OPT_E))
|
|
|
|
) {
|
2006-09-29 20:58:53 +00:00
|
|
|
reflags |= REG_EXTENDED;
|
2007-09-10 12:18:32 +00:00
|
|
|
}
|
2003-06-20 09:01:58 +00:00
|
|
|
|
2007-02-25 02:38:20 +00:00
|
|
|
if (option_mask32 & OPT_i)
|
2003-06-20 09:01:58 +00:00
|
|
|
reflags |= REG_ICASE;
|
|
|
|
|
|
|
|
argv += optind;
|
|
|
|
argc -= optind;
|
2000-06-13 06:24:53 +00:00
|
|
|
|
2001-05-24 18:36:18 +00:00
|
|
|
/* if we didn't get a pattern from a -e and no command file was specified,
|
|
|
|
* argv[optind] should be the pattern. no pattern, no worky */
|
2003-04-27 01:50:57 +00:00
|
|
|
if (pattern_head == NULL) {
|
2007-02-25 02:38:20 +00:00
|
|
|
char *pattern;
|
2003-06-20 09:01:58 +00:00
|
|
|
if (*argv == NULL)
|
2003-03-19 09:13:01 +00:00
|
|
|
bb_show_usage();
|
2007-02-25 02:38:20 +00:00
|
|
|
pattern = new_grep_list_data(*argv++, 0);
|
|
|
|
llist_add_to(&pattern_head, pattern);
|
|
|
|
argc--;
|
2001-05-24 18:36:18 +00:00
|
|
|
}
|
2000-06-28 22:00:26 +00:00
|
|
|
|
2001-05-24 18:36:18 +00:00
|
|
|
/* argv[(optind)..(argc-1)] should be names of file to grep through. If
|
2006-10-14 14:24:30 +00:00
|
|
|
* there is more than one file to grep, we will print the filenames. */
|
2006-10-22 11:42:51 +00:00
|
|
|
if (argc > 1)
|
2006-10-14 14:24:30 +00:00
|
|
|
print_filename = 1;
|
2006-10-22 11:42:51 +00:00
|
|
|
/* -H / -h of course override */
|
2007-02-25 02:38:20 +00:00
|
|
|
if (option_mask32 & OPT_H)
|
2006-10-22 11:42:51 +00:00
|
|
|
print_filename = 1;
|
2007-02-25 02:38:20 +00:00
|
|
|
if (option_mask32 & OPT_h)
|
2006-10-22 11:42:51 +00:00
|
|
|
print_filename = 0;
|
1999-10-05 16:24:54 +00:00
|
|
|
|
2000-06-28 22:59:30 +00:00
|
|
|
/* If no files were specified, or '-' was specified, take input from
|
|
|
|
* stdin. Otherwise, we grep through all the files specified. */
|
2003-06-20 09:01:58 +00:00
|
|
|
matched = 0;
|
2007-09-10 12:18:32 +00:00
|
|
|
do {
|
2003-06-20 09:01:58 +00:00
|
|
|
cur_file = *argv++;
|
2006-10-14 14:24:30 +00:00
|
|
|
file = stdin;
|
2006-09-29 21:04:12 +00:00
|
|
|
if (!cur_file || (*cur_file == '-' && !cur_file[1])) {
|
2005-09-23 15:38:49 +00:00
|
|
|
cur_file = "(standard input)";
|
2003-06-20 09:01:58 +00:00
|
|
|
} else {
|
2007-02-25 02:38:20 +00:00
|
|
|
if (option_mask32 & OPT_r) {
|
2006-10-14 14:24:30 +00:00
|
|
|
struct stat st;
|
|
|
|
if (stat(cur_file, &st) == 0 && S_ISDIR(st.st_mode)) {
|
2007-02-25 02:38:20 +00:00
|
|
|
if (!(option_mask32 & OPT_h))
|
2006-10-14 14:51:59 +00:00
|
|
|
print_filename = 1;
|
2006-10-14 14:24:30 +00:00
|
|
|
matched += grep_dir(cur_file);
|
|
|
|
goto grep_done;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
/* else: fopen(dir) will succeed, but reading won't */
|
2000-06-28 22:00:26 +00:00
|
|
|
file = fopen(cur_file, "r");
|
2006-10-14 14:24:30 +00:00
|
|
|
if (file == NULL) {
|
|
|
|
if (!SUPPRESS_ERR_MSGS)
|
2007-10-01 11:58:38 +00:00
|
|
|
bb_simple_perror_msg(cur_file);
|
2006-10-14 14:24:30 +00:00
|
|
|
open_errors = 1;
|
|
|
|
continue;
|
2000-07-18 21:02:06 +00:00
|
|
|
}
|
2000-02-08 19:58:47 +00:00
|
|
|
}
|
2006-10-14 14:24:30 +00:00
|
|
|
matched += grep_file(file);
|
2006-10-26 23:25:17 +00:00
|
|
|
fclose_if_not_stdin(file);
|
2007-07-15 12:39:08 +00:00
|
|
|
grep_done: ;
|
2007-09-10 12:18:32 +00:00
|
|
|
} while (--argc > 0);
|
2003-06-20 09:01:58 +00:00
|
|
|
|
|
|
|
/* destroy all the elments in the pattern list */
|
2006-02-28 10:10:19 +00:00
|
|
|
if (ENABLE_FEATURE_CLEAN_UP) {
|
|
|
|
while (pattern_head) {
|
|
|
|
llist_t *pattern_head_ptr = pattern_head;
|
2007-09-10 12:18:32 +00:00
|
|
|
grep_list_data_t *gl = (grep_list_data_t *)pattern_head_ptr->data;
|
2006-02-28 10:10:19 +00:00
|
|
|
|
|
|
|
pattern_head = pattern_head->link;
|
2006-09-29 21:04:12 +00:00
|
|
|
if ((gl->flg_mem_alocated_compiled & PATTERN_MEM_A))
|
2006-02-28 10:10:19 +00:00
|
|
|
free(gl->pattern);
|
2006-09-29 21:04:12 +00:00
|
|
|
if ((gl->flg_mem_alocated_compiled & COMPILED))
|
2006-02-28 10:10:19 +00:00
|
|
|
regfree(&(gl->preg));
|
2007-04-12 18:29:27 +00:00
|
|
|
free(gl);
|
2006-02-28 10:10:19 +00:00
|
|
|
free(pattern_head_ptr);
|
|
|
|
}
|
2000-02-08 19:58:47 +00:00
|
|
|
}
|
2005-09-23 15:38:49 +00:00
|
|
|
/* 0 = success, 1 = failed, 2 = error */
|
2006-10-14 14:24:30 +00:00
|
|
|
if (open_errors)
|
2005-09-23 13:50:24 +00:00
|
|
|
return 2;
|
2007-09-10 12:18:32 +00:00
|
|
|
return !matched; /* invert return value: 0 = success, 1 = failed */
|
2000-06-28 22:00:26 +00:00
|
|
|
}
|