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-rw-r--r--release/src/router/busybox/grep.c359
1 files changed, 0 insertions, 359 deletions
diff --git a/release/src/router/busybox/grep.c b/release/src/router/busybox/grep.c
deleted file mode 100644
index 3254868b..00000000
--- a/release/src/router/busybox/grep.c
+++ /dev/null
@@ -1,359 +0,0 @@
-/*
- * Mini grep implementation for busybox using libc regex.
- *
- * Copyright (C) 1999,2000,2001 by Lineo, inc.
- * Written by Mark Whitley <markw@lineo.com>, <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
- *
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <getopt.h>
-#include <regex.h>
-#include <string.h> /* for strerror() */
-#include <errno.h>
-#include "busybox.h"
-
-
-extern int optind; /* in unistd.h */
-extern int errno; /* for use with strerror() */
-extern void xregcomp(regex_t *preg, const char *regex, int cflags); /* in busybox.h */
-
-/* options */
-static int reflags = REG_NOSUB;
-static int print_filename = 0;
-static int print_line_num = 0;
-static int print_match_counts = 0;
-static int be_quiet = 0;
-static int invert_search = 0;
-static int suppress_err_msgs = 0;
-static int print_files_with_matches = 0;
-
-#ifdef BB_FEATURE_GREP_CONTEXT
-extern char *optarg; /* in getopt.h */
-static int lines_before = 0;
-static int lines_after = 0;
-static char **before_buf = NULL;
-static int last_line_printed = 0;
-#endif /* BB_FEATURE_GREP_CONTEXT */
-
-/* globals used internally */
-static regex_t *regexes = NULL; /* growable array of compiled regular expressions */
-static int nregexes = 0; /* number of elements in above arrary */
-static int matched; /* keeps track of whether we ever matched */
-static char *cur_file = NULL; /* the current file we are reading */
-
-
-static void print_line(const char *line, int linenum, char decoration)
-{
-#ifdef BB_FEATURE_GREP_CONTEXT
- /* possibly print the little '--' seperator */
- if ((lines_before || lines_after) && last_line_printed &&
- last_line_printed < linenum - 1) {
- puts("--");
- }
- last_line_printed = linenum;
-#endif
- if (print_filename)
- printf("%s%c", cur_file, decoration);
- if (print_line_num)
- printf("%i%c", linenum, decoration);
- puts(line);
-}
-
-
-static void grep_file(FILE *file)
-{
- char *line = NULL;
- int ret;
- int linenum = 0;
- int nmatches = 0;
- int i;
-#ifdef BB_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 /* BB_FEATURE_GREP_CONTEXT */
-
- while ((line = get_line_from_file(file)) != NULL) {
- chomp(line);
- linenum++;
-
- for (i = 0; i < nregexes; i++) {
- /*
- * 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)
- */
- ret = regexec(&regexes[i], line, 0, NULL, 0);
- if ((ret == 0 && !invert_search) || (ret == REG_NOMATCH && invert_search)) {
-
- /* if we found a match but were told to be quiet, stop here and
- * return success */
- if (be_quiet)
- exit(0);
-
- /* keep track of matches */
- nmatches++;
-
- /* 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 BB_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++;
- }
- }
-
- /* make a note that we need to print 'after' lines */
- print_n_lines_after = lines_after;
-#endif /* BB_FEATURE_GREP_CONTEXT */
- print_line(line, linenum, ':');
- }
- }
-#ifdef BB_FEATURE_GREP_CONTEXT
- else { /* no match */
- /* Add the line to the circular 'before' buffer */
- if(lines_before) {
- if(before_buf[curpos])
- free(before_buf[curpos]);
- before_buf[curpos] = strdup(line);
- curpos = (curpos + 1) % lines_before;
- }
- }
-
- /* if we need to print some context lines after the last match, do so */
- if (print_n_lines_after && (last_line_printed != linenum)) {
- print_line(line, linenum, '-');
- print_n_lines_after--;
- }
-#endif /* BB_FEATURE_GREP_CONTEXT */
- } /* for */
- free(line);
- }
-
-
- /* 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)
- printf("%s:", cur_file);
- if (print_files_with_matches && nmatches > 0)
- printf("1\n");
- else
- 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);
- }
-
-
- /* remember if we matched */
- if (nmatches != 0)
- matched = 1;
-}
-
-
-static void add_regex(const char *restr)
-{
- regexes = xrealloc(regexes, sizeof(regex_t) * (++nregexes));
- xregcomp(&regexes[nregexes-1], restr, reflags);
-}
-
-
-static void load_regexes_from_file(const char *filename)
-{
- char *line;
- FILE *f = xfopen(filename, "r");
- while ((line = get_line_from_file(f)) != NULL) {
- chomp(line);
- add_regex(line);
- free(line);
- }
-}
-
-
-#ifdef BB_FEATURE_CLEAN_UP
-static void destroy_regexes()
-{
- if (regexes == NULL)
- return;
-
- /* destroy all the elments in the array */
- while (--nregexes >= 0) {
- regfree(&regexes[nregexes]);
- free(&regexes[nregexes]);
- }
-}
-#endif
-
-
-extern int grep_main(int argc, char **argv)
-{
- int opt;
-#ifdef BB_FEATURE_GREP_CONTEXT
- char *junk;
-#endif
-
-#ifdef BB_FEATURE_CLEAN_UP
- /* destroy command strings on exit */
- if (atexit(destroy_regexes) == -1)
- perror_msg_and_die("atexit");
-#endif
-
- /* do normal option parsing */
- while ((opt = getopt(argc, argv, "iHhlnqvsce:f:"
-#ifdef BB_FEATURE_GREP_CONTEXT
-"A:B:C:"
-#endif
-)) > 0) {
- switch (opt) {
- case 'i':
- reflags |= REG_ICASE;
- break;
- case 'l':
- print_files_with_matches++;
- break;
- case 'H':
- print_filename++;
- break;
- case 'h':
- print_filename--;
- break;
- case 'n':
- print_line_num++;
- break;
- case 'q':
- be_quiet++;
- break;
- case 'v':
- invert_search++;
- break;
- case 's':
- suppress_err_msgs++;
- break;
- case 'c':
- print_match_counts++;
- break;
- case 'e':
- add_regex(optarg);
- break;
- case 'f':
- load_regexes_from_file(optarg);
- break;
-#ifdef BB_FEATURE_GREP_CONTEXT
- case 'A':
- lines_after = strtoul(optarg, &junk, 10);
- if(*junk != '\0')
- error_msg_and_die("invalid context length argument");
- break;
- case 'B':
- lines_before = strtoul(optarg, &junk, 10);
- if(*junk != '\0')
- error_msg_and_die("invalid context length argument");
- before_buf = (char **)calloc(lines_before, sizeof(char *));
- break;
- case 'C':
- lines_after = lines_before = strtoul(optarg, &junk, 10);
- if(*junk != '\0')
- error_msg_and_die("invalid context length argument");
- before_buf = (char **)calloc(lines_before, sizeof(char *));
- break;
-#endif /* BB_FEATURE_GREP_CONTEXT */
- default:
- show_usage();
- }
- }
-
- /* 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 (nregexes == 0) {
- if (argv[optind] == NULL)
- show_usage();
- else {
- add_regex(argv[optind]);
- optind++;
- }
- }
-
- /* sanity checks */
- if (print_match_counts || be_quiet || print_files_with_matches) {
- print_line_num = 0;
-#ifdef BB_FEATURE_GREP_CONTEXT
- lines_before = 0;
- lines_after = 0;
-#endif
- }
-
- /* 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) - (optind) > 0)
- print_filename++;
-
- /* If no files were specified, or '-' was specified, take input from
- * stdin. Otherwise, we grep through all the files specified. */
- if (argv[optind] == NULL || (strcmp(argv[optind], "-") == 0)) {
- grep_file(stdin);
- }
- else {
- int i;
- FILE *file;
- for (i = optind; i < argc; i++) {
- cur_file = argv[i];
- file = fopen(cur_file, "r");
- if (file == NULL) {
- if (!suppress_err_msgs)
- perror_msg("%s", cur_file);
- }
- else {
- grep_file(file);
- fclose(file);
- }
- }
- }
-
- return !matched; /* invert return value 0 = success, 1 = failed */
-}
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