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Diffstat (limited to 'sed.c')
| -rw-r--r-- | sed.c | 150 |
1 files changed, 150 insertions, 0 deletions
@@ -0,0 +1,150 @@ +/* + * Mini sed 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 sed_usage[] = +"sed [-n] [-e script] [file...]\n" +"Allowed scripts come in two forms:\n" +"'/regexp/[gp]'\n" +"\tattempt to match regexp against the pattern space\n" +"'s/regexp/replacement/[gp]'\n" +"\tattempt to match regexp against the pattern space\n" +"\tand if successful replaces the matched portion with replacement." +"Options:\n" +"-e\tadd the script to the commands to be executed\n" +"-n\tsuppress automatic printing of pattern space\n\n" +#if defined BB_REGEXP +"This version of sed matches full regexps.\n"; +#else +"This version of sed matches strings (not full regexps).\n"; +#endif + + +static int replaceFlag = FALSE; +static int noprintFlag = FALSE; + + +extern int sed_main (int argc, char **argv) +{ + FILE *fp; + const char *needle; + const char *name; + const char *cp; + int tellName=TRUE; + int ignoreCase=FALSE; + int tellLine=FALSE; + 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 'n': + noprintFlag = TRUE; + break; + case 'e': + if (*(*argv)+1 != '\'' && **argv != '\"') { + if (--argc == 0) + usage( mkdir_usage); + ++argv; + if (*(*argv)+1 != '\'' && **argv != '\"') { + usage( mkdir_usage); + } + /* Find the specified modes */ + mode = 0; + if ( parse_mode(*(++argv), &mode) == FALSE ) { + fprintf(stderr, "Unknown mode: %s\n", *argv); + exit( FALSE); + } + break; + + default: + usage(grep_usage); + } + } + + needle = *argv++; + argc--; + + while (argc-- > 0) { + name = *argv++; + + fp = fopen (name, "r"); + if (fp == NULL) { + perror (name); + continue; + } + + 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); + } + } + + if (ferror (fp)) + perror (name); + + fclose (fp); + } + exit( TRUE); +} + + +/* END CODE */ + + |