| /* |
| * Mini grep implementation for busybox |
| * |
| * |
| * Copyright (C) 1999 by Lineo, inc. |
| * Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.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 "internal.h" |
| #include "regexp.h" |
| #include <stdio.h> |
| #include <dirent.h> |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <signal.h> |
| #include <time.h> |
| #include <ctype.h> |
| |
| static const char grep_usage[] = |
| "grep [-ihn]... PATTERN [FILE]...\n" |
| "Search for PATTERN in each FILE or standard input.\n\n" |
| "\t-h\tsuppress the prefixing filename on output\n" |
| "\t-i\tignore case distinctions\n" |
| "\t-n\tprint line number with output lines\n\n" |
| #if defined BB_REGEXP |
| "This version of grep matches full regexps.\n"; |
| #else |
| "This version of grep matches strings (not full regexps).\n"; |
| #endif |
| |
| int tellName=TRUE; |
| int ignoreCase=FALSE; |
| int tellLine=FALSE; |
| |
| static do_grep(char* needle, char* haystack ) |
| { |
| line = 0; |
| |
| while (fgets (haystack, sizeof (haystack), fp)) { |
| line++; |
| cp = &haystack[strlen (haystack) - 1]; |
| |
| if (*cp != '\n') |
| fprintf (stderr, "%s: Line too long\n", name); |
| |
| if (find_match(haystack, needle, ignoreCase) == TRUE) { |
| if (tellName==TRUE) |
| printf ("%s: ", name); |
| |
| if (tellLine==TRUE) |
| printf ("%ld: ", line); |
| |
| fputs (haystack, stdout); |
| } |
| } |
| } |
| |
| |
| extern int grep_main (int argc, char **argv) |
| { |
| FILE *fp; |
| char *needle; |
| char *name; |
| char *cp; |
| long line; |
| char haystack[BUF_SIZE]; |
| |
| ignoreCase = FALSE; |
| tellLine = FALSE; |
| |
| argc--; |
| argv++; |
| if (argc < 1) { |
| usage(grep_usage); |
| } |
| |
| if (**argv == '-') { |
| argc--; |
| cp = *argv++; |
| |
| while (*++cp) |
| switch (*cp) { |
| case 'i': |
| ignoreCase = TRUE; |
| break; |
| |
| case 'h': |
| tellName = FALSE; |
| break; |
| |
| case 'n': |
| tellLine = TRUE; |
| break; |
| |
| default: |
| usage(grep_usage); |
| } |
| } |
| |
| needle = *argv++; |
| argc--; |
| |
| |
| while (argc-- > 0) { |
| |
| if (argc==0) { |
| file = stdin; |
| } |
| else |
| file = fopen(*argv, "r"); |
| |
| |
| name = *argv++; |
| |
| fp = fopen (name, "r"); |
| if (fp == NULL) { |
| perror (name); |
| continue; |
| } |
| |
| if (ferror (fp)) |
| perror (name); |
| |
| fclose (fp); |
| } |
| exit( TRUE); |
| } |
| |
| |
| /* END CODE */ |
| |
| |