Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 1 | /* vi: set sw=4 ts=4: */ |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 2 | /* |
Eric Andersen | 3e0fbae | 1999-10-19 06:02:44 +0000 | [diff] [blame] | 3 | * Mini grep implementation for busybox |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 4 | * |
Eric Andersen | c499601 | 1999-10-20 22:08:37 +0000 | [diff] [blame] | 5 | * |
Erik Andersen | 61677fe | 2000-04-13 01:18:56 +0000 | [diff] [blame^] | 6 | * Copyright (C) 1999,2000 by Lineo, inc. |
Eric Andersen | c499601 | 1999-10-20 22:08:37 +0000 | [diff] [blame] | 7 | * Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.org> |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 8 | * |
Eric Andersen | 3e0fbae | 1999-10-19 06:02:44 +0000 | [diff] [blame] | 9 | * This program is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU General Public License as published by |
| 11 | * the Free Software Foundation; either version 2 of the License, or |
| 12 | * (at your option) any later version. |
| 13 | * |
| 14 | * This program is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 17 | * General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License |
| 20 | * along with this program; if not, write to the Free Software |
| 21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 22 | * |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 23 | */ |
| 24 | |
Erik Andersen | 3fe2ecf | 1999-12-21 08:52:04 +0000 | [diff] [blame] | 25 | /* |
| 26 | 18-Dec-1999 Konstantin Boldyshev <konst@voshod.com> |
| 27 | |
| 28 | + -q option (be quiet) |
| 29 | + exit code depending on grep result (TRUE or FALSE) |
| 30 | (useful for scripts) |
| 31 | */ |
| 32 | |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 33 | #include "internal.h" |
Eric Andersen | aa0765e | 1999-10-22 04:30:20 +0000 | [diff] [blame] | 34 | #include "regexp.h" |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 35 | #include <stdio.h> |
| 36 | #include <dirent.h> |
| 37 | #include <errno.h> |
| 38 | #include <fcntl.h> |
| 39 | #include <signal.h> |
| 40 | #include <time.h> |
| 41 | #include <ctype.h> |
| 42 | |
Eric Andersen | e77ae3a | 1999-10-19 20:03:34 +0000 | [diff] [blame] | 43 | static const char grep_usage[] = |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 44 | "grep [OPTIONS]... PATTERN [FILE]...\n\n" |
| 45 | "Search for PATTERN in each FILE or standard input.\n\n" |
| 46 | "OPTIONS:\n" |
| 47 | "\t-h\tsuppress the prefixing filename on output\n" |
| 48 | "\t-i\tignore case distinctions\n" |
| 49 | "\t-n\tprint line number with output lines\n" |
| 50 | "\t-q\tbe quiet. Returns 0 if result was found, 1 otherwise\n\n" |
Eric Andersen | aa0765e | 1999-10-22 04:30:20 +0000 | [diff] [blame] | 51 | #if defined BB_REGEXP |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 52 | "This version of grep matches full regular expresions.\n"; |
Eric Andersen | aa0765e | 1999-10-22 04:30:20 +0000 | [diff] [blame] | 53 | #else |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 54 | "This version of grep matches strings (not regular expresions).\n"; |
Eric Andersen | aa0765e | 1999-10-22 04:30:20 +0000 | [diff] [blame] | 55 | #endif |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 56 | |
Erik Andersen | 3fe2ecf | 1999-12-21 08:52:04 +0000 | [diff] [blame] | 57 | static int match = FALSE, beQuiet = FALSE; |
Eric Andersen | fbb39c8 | 1999-11-08 17:00:52 +0000 | [diff] [blame] | 58 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 59 | static void do_grep(FILE * fp, char *needle, char *fileName, int tellName, |
| 60 | int ignoreCase, int tellLine) |
Eric Andersen | fbb39c8 | 1999-11-08 17:00:52 +0000 | [diff] [blame] | 61 | { |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 62 | char *cp; |
| 63 | long line = 0; |
| 64 | char haystack[BUF_SIZE]; |
Eric Andersen | fbb39c8 | 1999-11-08 17:00:52 +0000 | [diff] [blame] | 65 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 66 | while (fgets(haystack, sizeof(haystack), fp)) { |
| 67 | line++; |
| 68 | cp = &haystack[strlen(haystack) - 1]; |
Eric Andersen | fbb39c8 | 1999-11-08 17:00:52 +0000 | [diff] [blame] | 69 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 70 | if (*cp != '\n') |
| 71 | fprintf(stderr, "%s: Line too long\n", fileName); |
Eric Andersen | fbb39c8 | 1999-11-08 17:00:52 +0000 | [diff] [blame] | 72 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 73 | if (find_match(haystack, needle, ignoreCase) == TRUE) { |
| 74 | if (tellName == TRUE) |
| 75 | printf("%s:", fileName); |
Eric Andersen | fbb39c8 | 1999-11-08 17:00:52 +0000 | [diff] [blame] | 76 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 77 | if (tellLine == TRUE) |
| 78 | printf("%ld:", line); |
Eric Andersen | fbb39c8 | 1999-11-08 17:00:52 +0000 | [diff] [blame] | 79 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 80 | if (beQuiet == FALSE) |
| 81 | fputs(haystack, stdout); |
Erik Andersen | 3fe2ecf | 1999-12-21 08:52:04 +0000 | [diff] [blame] | 82 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 83 | match = TRUE; |
| 84 | } |
Eric Andersen | fbb39c8 | 1999-11-08 17:00:52 +0000 | [diff] [blame] | 85 | } |
| 86 | } |
| 87 | |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 88 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 89 | extern int grep_main(int argc, char **argv) |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 90 | { |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 91 | FILE *fp; |
| 92 | char *cp; |
| 93 | char *needle; |
| 94 | char *fileName; |
| 95 | int tellName = TRUE; |
| 96 | int ignoreCase = TRUE; |
| 97 | int tellLine = FALSE; |
Eric Andersen | 50d6360 | 1999-11-09 01:47:36 +0000 | [diff] [blame] | 98 | |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 99 | |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 100 | ignoreCase = FALSE; |
| 101 | tellLine = FALSE; |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 102 | |
| 103 | argc--; |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 104 | argv++; |
| 105 | if (argc < 1) { |
Eric Andersen | 3e0fbae | 1999-10-19 06:02:44 +0000 | [diff] [blame] | 106 | usage(grep_usage); |
Eric Andersen | fbb39c8 | 1999-11-08 17:00:52 +0000 | [diff] [blame] | 107 | } |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 108 | |
| 109 | if (**argv == '-') { |
| 110 | argc--; |
| 111 | cp = *argv++; |
| 112 | |
| 113 | while (*++cp) |
| 114 | switch (*cp) { |
| 115 | case 'i': |
| 116 | ignoreCase = TRUE; |
| 117 | break; |
| 118 | |
| 119 | case 'h': |
| 120 | tellName = FALSE; |
| 121 | break; |
| 122 | |
| 123 | case 'n': |
| 124 | tellLine = TRUE; |
| 125 | break; |
| 126 | |
| 127 | case 'q': |
| 128 | beQuiet = TRUE; |
| 129 | break; |
| 130 | |
| 131 | default: |
| 132 | usage(grep_usage); |
| 133 | } |
| 134 | } |
| 135 | |
| 136 | needle = *argv++; |
| 137 | argc--; |
| 138 | |
| 139 | if (argc == 0) { |
| 140 | do_grep(stdin, needle, "stdin", FALSE, ignoreCase, tellLine); |
| 141 | } else { |
| 142 | /* Never print the filename for just one file */ |
| 143 | if (argc == 1) |
| 144 | tellName = FALSE; |
| 145 | while (argc-- > 0) { |
| 146 | fileName = *argv++; |
| 147 | |
| 148 | fp = fopen(fileName, "r"); |
| 149 | if (fp == NULL) { |
| 150 | perror(fileName); |
| 151 | continue; |
| 152 | } |
| 153 | |
| 154 | do_grep(fp, needle, fileName, tellName, ignoreCase, tellLine); |
| 155 | |
| 156 | if (ferror(fp)) |
| 157 | perror(fileName); |
| 158 | fclose(fp); |
| 159 | } |
| 160 | } |
| 161 | exit(match); |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 162 | } |
| 163 | |
| 164 | |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 165 | /* END CODE */ |