+/* vi: set sw=4 ts=4: */
/*
* Mini grep implementation for busybox using libc regex.
*
* Copyright (C) 1999,2000,2001 by Lineo, inc. and Mark Whitley
* Copyright (C) 1999,2000,2001 by Mark Whitley <markw@codepoet.org>
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
+ * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
*/
+/* BB_AUDIT SUSv3 defects - unsupported option -x. */
+/* BB_AUDIT GNU defects - always acts as -a. */
+/* http://www.opengroup.org/onlinepubs/007904975/utilities/grep.html */
/*
- * Apr 2004 by Vladimir Oleynik <dzo@simtreas.ru> -
+ * 2004,2006 (C) Vladimir Oleynik <dzo@simtreas.ru> -
* correction "-e pattern1 -e pattern2" logic and more optimizations.
-*/
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <getopt.h>
-#include <string.h>
-#include <errno.h>
-#include "busybox.h"
-#include "xregex.h"
+ * precompiled regex
+ */
+/*
+ * (C) 2006 Jac Goudsmit added -o option
+ */
+#include "libbb.h"
+#include "xregex.h"
/* options */
-#define GREP_OPTS "lnqvscFiHhe:f:L"
-#define GREP_OPT_l (1<<0)
-static char print_files_with_matches;
-#define GREP_OPT_n (1<<1)
-static char print_line_num;
-#define GREP_OPT_q (1<<2)
-static char be_quiet;
-#define GREP_OPT_v (1<<3)
-typedef char invert_search_t;
-static invert_search_t invert_search;
-#define GREP_OPT_s (1<<4)
-static char suppress_err_msgs;
-#define GREP_OPT_c (1<<5)
-static char print_match_counts;
-#define GREP_OPT_F (1<<6)
-static char fgrep_flag;
-#define GREP_OPT_i (1<<7)
-#define GREP_OPT_H (1<<8)
-#define GREP_OPT_h (1<<9)
-#define GREP_OPT_e (1<<10)
-#define GREP_OPT_f (1<<11)
-#define GREP_OPT_L (1<<12)
-static char print_files_without_matches;
-#ifdef CONFIG_FEATURE_GREP_CONTEXT
-#define GREP_OPT_CONTEXT "A:B:C"
-#define GREP_OPT_A (1<<13)
-#define GREP_OPT_B (1<<14)
-#define GREP_OPT_C (1<<15)
-#define GREP_OPT_E (1<<16)
-#else
-#define GREP_OPT_CONTEXT ""
-#define GREP_OPT_E (1<<13)
-#endif
-#ifdef CONFIG_FEATURE_GREP_EGREP_ALIAS
-# define OPT_EGREP "E"
-#else
-# define OPT_EGREP ""
+#define OPTSTR_GREP \
+ "lnqvscFiHhe:f:Lorm:" \
+ USE_FEATURE_GREP_CONTEXT("A:B:C:") \
+ USE_FEATURE_GREP_EGREP_ALIAS("E") \
+ USE_DESKTOP("w") \
+ "aI"
+/* ignored: -a "assume all files to be text" */
+/* ignored: -I "assume binary files have no matches" */
+
+enum {
+ 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 */
+ 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,
+ OPT_m = 1 << OPTBIT_m,
+ 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,
+};
+
+#define PRINT_FILES_WITH_MATCHES (option_mask32 & OPT_l)
+#define PRINT_LINE_NUM (option_mask32 & OPT_n)
+#define BE_QUIET (option_mask32 & OPT_q)
+#define SUPPRESS_ERR_MSGS (option_mask32 & OPT_s)
+#define PRINT_MATCH_COUNTS (option_mask32 & OPT_c)
+#define FGREP_FLAG (option_mask32 & OPT_F)
+#define PRINT_FILES_WITHOUT_MATCHES (option_mask32 & OPT_L)
+
+struct globals {
+ int max_matches;
+ int reflags;
+ smalluint invert_search;
+ smalluint print_filename;
+ smalluint open_errors;
+#if ENABLE_FEATURE_GREP_CONTEXT
+ smalluint did_print_line;
+ int lines_before;
+ int lines_after;
+ char **before_buf;
+ int last_line_printed;
#endif
-
-static int reflags;
-static int print_filename;
-
-#ifdef CONFIG_FEATURE_GREP_CONTEXT
-static int lines_before;
-static int lines_after;
-static char **before_buf;
-static int last_line_printed;
-#endif /* CONFIG_FEATURE_GREP_CONTEXT */
-
-/* globals used internally */
-static llist_t *pattern_head; /* growable list of patterns to match */
-static char *cur_file; /* the current file we are reading */
+ /* 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 )
+
+
+typedef struct grep_list_data_t {
+ char *pattern;
+ regex_t preg;
+#define PATTERN_MEM_A 1
+#define COMPILED 2
+ int flg_mem_alocated_compiled;
+} grep_list_data_t;
static void print_line(const char *line, int linenum, char decoration)
{
-#ifdef CONFIG_FEATURE_GREP_CONTEXT
+#if ENABLE_FEATURE_GREP_CONTEXT
+ /* 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;
/* possibly print the little '--' separator */
- if ((lines_before || lines_after) && last_line_printed &&
- last_line_printed < linenum - 1) {
+ if ((lines_before || lines_after) && did_print_line &&
+ last_line_printed != linenum - 1) {
puts("--");
}
+ /* guard against printing "--" before first line of first file */
+ did_print_line = 1;
last_line_printed = linenum;
#endif
- if (print_filename > 0)
+ if (print_filename)
printf("%s%c", cur_file, decoration);
- if (print_line_num)
+ if (PRINT_LINE_NUM)
printf("%i%c", linenum, decoration);
- puts(line);
+ /* Emulate weird GNU grep behavior with -ov */
+ if ((option_mask32 & (OPT_v|OPT_o)) != (OPT_v|OPT_o))
+ puts(line);
}
-
static int grep_file(FILE *file)
{
char *line;
- invert_search_t ret;
+ smalluint found;
int linenum = 0;
int nmatches = 0;
-#ifdef CONFIG_FEATURE_GREP_CONTEXT
+ regmatch_t regmatch;
+#if ENABLE_FEATURE_GREP_CONTEXT
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 */
-#endif /* CONFIG_FEATURE_GREP_CONTEXT */
+#else
+ enum { print_n_lines_after = 0 };
+#endif /* ENABLE_FEATURE_GREP_CONTEXT */
- while ((line = bb_get_chomped_line_from_file(file)) != NULL) {
+ while ((line = xmalloc_getline(file)) != NULL) {
llist_t *pattern_ptr = pattern_head;
+ grep_list_data_t *gl = gl; /* for gcc */
linenum++;
- ret = 0;
+ found = 0;
while (pattern_ptr) {
- if (fgrep_flag) {
- ret = strstr(line, pattern_ptr->data) != NULL;
+ gl = (grep_list_data_t *)pattern_ptr->data;
+ if (FGREP_FLAG) {
+ found |= (strstr(line, gl->pattern) != NULL);
} else {
- /*
- * test for a postitive-assertion match (regexec returns success (0)
- * and the user did not specify invert search), or a negative-assertion
- * match (regexec returns failure (REG_NOMATCH) and the user specified
- * invert search)
- */
- regex_t regex;
- xregcomp(®ex, pattern_ptr->data, reflags);
- ret |= regexec(®ex, line, 0, NULL, 0) == 0;
- regfree(®ex);
+ if (!(gl->flg_mem_alocated_compiled & COMPILED)) {
+ gl->flg_mem_alocated_compiled |= COMPILED;
+ xregcomp(&(gl->preg), gl->pattern, reflags);
+ }
+ regmatch.rm_so = 0;
+ regmatch.rm_eo = 0;
+ if (regexec(&(gl->preg), line, 1, ®match, 0) == 0) {
+ if (!(option_mask32 & OPT_w))
+ found = 1;
+ 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 != '_'))
+ found = 1;
+ }
+ }
+ }
}
+ /* If it's non-inverted search, we can stop
+ * at first match */
+ if (found && !invert_search)
+ goto do_found;
pattern_ptr = pattern_ptr->link;
} /* while (pattern_ptr) */
- if ((ret ^ invert_search)) {
-
- if (print_files_with_matches || be_quiet)
- free(line);
-
- /* if we found a match but were told to be quiet, stop here */
- if (be_quiet || print_files_without_matches)
- return -1;
+ if (found ^ invert_search) {
+ do_found:
+ /* keep track of matches */
+ nmatches++;
+
+ /* 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 through to "return 1" */
+ }
+ /* OPT_L aka PRINT_FILES_WITHOUT_MATCHES: return early */
+ return 1; /* one match */
+ }
- /* keep track of matches */
- nmatches++;
+#if ENABLE_FEATURE_GREP_CONTEXT
+ /* Were we printing context and saw next (unwanted) match? */
+ if ((option_mask32 & OPT_m) && nmatches > max_matches)
+ break;
+#endif
- /* if we're just printing filenames, we stop after the first match */
- if (print_files_with_matches)
- break;
-
- /* print the matched line */
- if (print_match_counts == 0) {
-#ifdef CONFIG_FEATURE_GREP_CONTEXT
- 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++;
- }
+ /* print the matched line */
+ if (PRINT_MATCH_COUNTS == 0) {
+#if ENABLE_FEATURE_GREP_CONTEXT
+ 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++;
+ }
- /* 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++;
- }
+ /* 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++;
}
+ }
- /* make a note that we need to print 'after' lines */
- print_n_lines_after = lines_after;
-#endif /* CONFIG_FEATURE_GREP_CONTEXT */
+ /* make a note that we need to print 'after' lines */
+ print_n_lines_after = lines_after;
+#endif
+ if (option_mask32 & OPT_o) {
+ 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, ':');
+ }
+ } else {
print_line(line, linenum, ':');
}
}
-#ifdef CONFIG_FEATURE_GREP_CONTEXT
- else { /* no match */
- /* Add the line to the circular 'before' buffer */
- if(lines_before) {
- free(before_buf[curpos]);
- before_buf[curpos] = bb_xstrdup(line);
- curpos = (curpos + 1) % lines_before;
- }
- }
-
+ }
+#if ENABLE_FEATURE_GREP_CONTEXT
+ else { /* no match */
/* if we need to print some context lines after the last match, do so */
- if (print_n_lines_after && (last_line_printed != linenum)) {
+ if (print_n_lines_after) {
print_line(line, linenum, '-');
print_n_lines_after--;
+ } else if (lines_before) {
+ /* Add the line to the circular 'before' buffer */
+ free(before_buf[curpos]);
+ before_buf[curpos] = line;
+ curpos = (curpos + 1) % lines_before;
+ /* avoid free(line) - we took line */
+ line = NULL;
}
-#endif /* CONFIG_FEATURE_GREP_CONTEXT */
+ }
+
+#endif /* ENABLE_FEATURE_GREP_CONTEXT */
free(line);
- }
+ /* Did we print all context after last requested match? */
+ if ((option_mask32 & OPT_m)
+ && !print_n_lines_after && nmatches == max_matches)
+ break;
+ }
/* special-case file post-processing for options where we don't print line
* matches, just filenames and possibly match counts */
/* grep -c: print [filename:]count, even if count is zero */
- if (print_match_counts) {
- if (print_filename > 0)
+ if (PRINT_MATCH_COUNTS) {
+ if (print_filename)
printf("%s:", cur_file);
- printf("%d\n", nmatches);
- }
-
- /* grep -l: print just the filename, but only if we grepped the line in the file */
- if (print_files_with_matches && nmatches > 0) {
- puts(cur_file);
+ printf("%d\n", nmatches);
}
- /* grep -L: print just the filename, but only if we didn't grep the line in the file */
- if (print_files_without_matches && nmatches == 0) {
+ /* 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 */
puts(cur_file);
}
return nmatches;
}
+#if ENABLE_FEATURE_CLEAN_UP
+#define new_grep_list_data(p, m) add_grep_list_data(p, m)
+static char *add_grep_list_data(char *pattern, int flg_used_mem)
+#else
+#define new_grep_list_data(p, m) add_grep_list_data(p)
+static char *add_grep_list_data(char *pattern)
+#endif
+{
+ grep_list_data_t *gl = xzalloc(sizeof(*gl));
+ gl->pattern = pattern;
+#if ENABLE_FEATURE_CLEAN_UP
+ gl->flg_mem_alocated_compiled = flg_used_mem;
+#else
+ /*gl->flg_mem_alocated_compiled = 0;*/
+#endif
+ return (char *)gl;
+}
+
static void load_regexes_from_file(llist_t *fopt)
{
char *line;
FILE *f;
- while(fopt) {
+ while (fopt) {
llist_t *cur = fopt;
char *ffile = cur->data;
fopt = cur->link;
free(cur);
- f = bb_xfopen(ffile, "r");
- while ((line = bb_get_chomped_line_from_file(f)) != NULL) {
- pattern_head = llist_add_to(pattern_head, line);
+ f = xfopen(ffile, "r");
+ while ((line = xmalloc_getline(f)) != NULL) {
+ llist_add_to(&pattern_head,
+ new_grep_list_data(line, PATTERN_MEM_A));
}
}
}
+static int file_action_grep(const char *filename, struct stat *statbuf ATTRIBUTE_UNUSED, void* matched, int depth ATTRIBUTE_UNUSED)
+{
+ FILE *file = fopen(filename, "r");
+ if (file == NULL) {
+ if (!SUPPRESS_ERR_MSGS)
+ bb_simple_perror_msg(filename);
+ open_errors = 1;
+ return 0;
+ }
+ cur_file = filename;
+ *(int*)matched += grep_file(file);
+ fclose(file);
+ return 1;
+}
-extern int grep_main(int argc, char **argv)
+static int grep_dir(const char *dir)
+{
+ int matched = 0;
+ recursive_action(dir,
+ /* recurse=yes */ ACTION_RECURSE |
+ /* followLinks=no */
+ /* depthFirst=yes */ ACTION_DEPTHFIRST,
+ /* fileAction= */ file_action_grep,
+ /* dirAction= */ NULL,
+ /* userData= */ &matched,
+ /* depth= */ 0);
+ return matched;
+}
+
+int grep_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int grep_main(int argc, char **argv)
{
FILE *file;
int matched;
- unsigned long opt;
+ char *mopt;
llist_t *fopt = NULL;
- int error_open_count = 0;
/* do normal option parsing */
-#ifdef CONFIG_FEATURE_GREP_CONTEXT
- {
- char *junk;
+#if ENABLE_FEATURE_GREP_CONTEXT
char *slines_after;
char *slines_before;
char *Copt;
- bb_opt_complementally = "H-h:e*:f*:C-AB";
- opt = bb_getopt_ulflags(argc, argv,
- GREP_OPTS GREP_OPT_CONTEXT OPT_EGREP,
- &pattern_head, &fopt,
+ opt_complementary = "H-h:e::f::C-AB";
+ getopt32(argv,
+ OPTSTR_GREP,
+ &pattern_head, &fopt, &mopt,
&slines_after, &slines_before, &Copt);
- if(opt & GREP_OPT_C) {
- /* C option unseted A and B options, but next -A or -B
- may be ovewrite own option */
- if(!(opt & GREP_OPT_A)) /* not overwtited */
+ if (option_mask32 & OPT_C) {
+ /* -C unsets prev -A and -B, but following -A or -B
+ may override it */
+ if (!(option_mask32 & OPT_A)) /* not overridden */
slines_after = Copt;
- if(!(opt & GREP_OPT_B)) /* not overwtited */
+ if (!(option_mask32 & OPT_B)) /* not overridden */
slines_before = Copt;
- opt |= GREP_OPT_A|GREP_OPT_B; /* set for parse now */
+ option_mask32 |= OPT_A|OPT_B; /* for parser */
}
- if(opt & GREP_OPT_A) {
- lines_after = strtoul(slines_after, &junk, 10);
- if(*junk != '\0')
- bb_error_msg_and_die("invalid context length argument");
+ if (option_mask32 & OPT_A) {
+ lines_after = xatoi_u(slines_after);
}
- if(opt & GREP_OPT_B) {
- lines_before = strtoul(slines_before, &junk, 10);
- if(*junk != '\0')
- bb_error_msg_and_die("invalid context length argument");
- }
- /* sanity checks after parse may be invalid numbers ;-) */
- if ((opt & (GREP_OPT_c|GREP_OPT_q|GREP_OPT_l|GREP_OPT_L))) {
- opt &= ~GREP_OPT_n;
+ if (option_mask32 & OPT_B) {
+ lines_before = xatoi_u(slines_before);
+ }
+ /* sanity checks */
+ if (option_mask32 & (OPT_c|OPT_q|OPT_l|OPT_L)) {
+ option_mask32 &= ~OPT_n;
lines_before = 0;
lines_after = 0;
- } else if(lines_before > 0)
- before_buf = (char **)xcalloc(lines_before, sizeof(char *));
- }
+ } else if (lines_before > 0)
+ before_buf = xzalloc(lines_before * sizeof(char *));
#else
/* with auto sanity checks */
- bb_opt_complementally = "H-h:e*:f*:c-n:q-n:l-n";
- opt = bb_getopt_ulflags(argc, argv, GREP_OPTS OPT_EGREP,
- &pattern_head, &fopt);
-
+ opt_complementary = "H-h:e::f::c-n:q-n:l-n";
+ getopt32(argv, OPTSTR_GREP,
+ &pattern_head, &fopt, &mopt);
#endif
- print_files_with_matches = opt & GREP_OPT_l;
- print_files_without_matches = (opt & GREP_OPT_L) != 0;
- print_line_num = opt & GREP_OPT_n;
- be_quiet = opt & GREP_OPT_q;
- invert_search = (opt & GREP_OPT_v) != 0; /* 0 | 1 */
- suppress_err_msgs = opt & GREP_OPT_s;
- print_match_counts = opt & GREP_OPT_c;
- fgrep_flag = opt & GREP_OPT_F;
- if(opt & GREP_OPT_H)
- print_filename++;
- if(opt & GREP_OPT_h)
- print_filename--;
- if(opt & GREP_OPT_f)
+ if (option_mask32 & OPT_m) {
+ max_matches = xatoi_u(mopt);
+ }
+ invert_search = ((option_mask32 & OPT_v) != 0); /* 0 | 1 */
+
+ if (pattern_head != NULL) {
+ /* convert char **argv to grep_list_data_t */
+ llist_t *cur;
+
+ for (cur = pattern_head; cur; cur = cur->link)
+ cur->data = new_grep_list_data(cur->data, 0);
+ }
+ if (option_mask32 & OPT_f)
load_regexes_from_file(fopt);
-#ifdef CONFIG_FEATURE_GREP_FGREP_ALIAS
- if(bb_applet_name[0] == 'f')
- fgrep_flag = 1;
-#endif
+ if (ENABLE_FEATURE_GREP_FGREP_ALIAS && applet_name[0] == 'f')
+ option_mask32 |= OPT_F;
-#ifdef CONFIG_FEATURE_GREP_EGREP_ALIAS
- if(bb_applet_name[0] == 'e' || (opt & GREP_OPT_E))
- reflags = REG_EXTENDED | REG_NOSUB;
- else
-#endif
+ if (!(option_mask32 & (OPT_o | OPT_w)))
reflags = REG_NOSUB;
- if(opt & GREP_OPT_i)
+ if (ENABLE_FEATURE_GREP_EGREP_ALIAS
+ && (applet_name[0] == 'e' || (option_mask32 & OPT_E))
+ ) {
+ reflags |= REG_EXTENDED;
+ }
+
+ if (option_mask32 & OPT_i)
reflags |= REG_ICASE;
argv += optind;
/* 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 */
if (pattern_head == NULL) {
+ char *pattern;
if (*argv == NULL)
bb_show_usage();
- else {
- pattern_head = llist_add_to(pattern_head, *argv++);
- argc--;
- }
+ pattern = new_grep_list_data(*argv++, 0);
+ llist_add_to(&pattern_head, pattern);
+ argc--;
}
/* argv[(optind)..(argc-1)] should be names of file to grep through. If
- * there is more than one file to grep, we will print the filenames */
- if (argc > 1) {
- print_filename++;
+ * there is more than one file to grep, we will print the filenames. */
+ if (argc > 1)
+ print_filename = 1;
+ /* -H / -h of course override */
+ if (option_mask32 & OPT_H)
+ print_filename = 1;
+ if (option_mask32 & OPT_h)
+ print_filename = 0;
/* If no files were specified, or '-' was specified, take input from
* stdin. Otherwise, we grep through all the files specified. */
- } else if (argc == 0) {
- argc++;
- }
matched = 0;
- while (argc--) {
+ do {
cur_file = *argv++;
- if(!cur_file || (*cur_file == '-' && !cur_file[1])) {
- cur_file = "-";
- file = stdin;
+ file = stdin;
+ if (!cur_file || (*cur_file == '-' && !cur_file[1])) {
+ cur_file = "(standard input)";
} else {
+ if (option_mask32 & OPT_r) {
+ struct stat st;
+ if (stat(cur_file, &st) == 0 && S_ISDIR(st.st_mode)) {
+ if (!(option_mask32 & OPT_h))
+ print_filename = 1;
+ matched += grep_dir(cur_file);
+ goto grep_done;
+ }
+ }
+ /* else: fopen(dir) will succeed, but reading won't */
file = fopen(cur_file, "r");
- }
if (file == NULL) {
- if (!suppress_err_msgs)
- bb_perror_msg("%s", cur_file);
- error_open_count++;
- } else {
- matched += grep_file(file);
- if(matched < 0) {
- /* we found a match but were told to be quiet, stop here and
- * return success */
- break;
+ if (!SUPPRESS_ERR_MSGS)
+ bb_simple_perror_msg(cur_file);
+ open_errors = 1;
+ continue;
}
- fclose(file);
}
- }
+ matched += grep_file(file);
+ fclose_if_not_stdin(file);
+ grep_done: ;
+ } while (--argc > 0);
-#ifdef CONFIG_FEATURE_CLEAN_UP
/* destroy all the elments in the pattern list */
- while (pattern_head) {
- llist_t *pattern_head_ptr = pattern_head;
-
- pattern_head = pattern_head->link;
- free(pattern_head_ptr);
+ if (ENABLE_FEATURE_CLEAN_UP) {
+ while (pattern_head) {
+ llist_t *pattern_head_ptr = pattern_head;
+ grep_list_data_t *gl = (grep_list_data_t *)pattern_head_ptr->data;
+
+ pattern_head = pattern_head->link;
+ if ((gl->flg_mem_alocated_compiled & PATTERN_MEM_A))
+ free(gl->pattern);
+ if ((gl->flg_mem_alocated_compiled & COMPILED))
+ regfree(&(gl->preg));
+ free(gl);
+ free(pattern_head_ptr);
+ }
}
-#endif
-
- if(be_quiet && matched)
- return 0;
- if(error_open_count)
+ /* 0 = success, 1 = failed, 2 = error */
+ if (open_errors)
return 2;
- return !matched; /* invert return value 0 = success, 1 = failed */
+ return !matched; /* invert return value: 0 = success, 1 = failed */
}
projects / oweals / busybox.git / blobdiff