1999-10-28 16:06:25 +00:00
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/*
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2000-07-10 22:55:51 +00:00
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* sed.c - very minimalist version of sed
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1999-10-28 16:06:25 +00:00
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*
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2001-10-24 05:00:29 +00:00
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* Copyright (C) 1999,2000,2001 by Lineo, inc. and Mark Whitley
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* Copyright (C) 1999,2000,2001 by Mark Whitley <markw@codepoet.org>
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2002-01-03 21:12:34 +00:00
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* Copyright (C) 2002 Matt Kraai
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2003-04-09 01:43:54 +00:00
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* Copyright (C) 2003 by Glenn McGrath <bug1@optushome.com.au>
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1999-12-29 22:19:46 +00:00
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*
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1999-10-28 16:06:25 +00:00
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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2000-07-10 22:55:51 +00:00
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/*
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Supported features and commands in this version of sed:
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- comments ('#')
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2000-07-14 00:00:15 +00:00
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- address matching: num|/matchstr/[,num|/matchstr/|$]command
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- commands: (p)rint, (d)elete, (s)ubstitue (with g & I flags)
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- edit commands: (a)ppend, (i)nsert, (c)hange
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2001-05-11 22:27:13 +00:00
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- file commands: (r)ead
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2000-07-17 20:06:42 +00:00
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- backreferences in substitution expressions (\1, \2...\9)
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2003-03-09 15:12:24 +00:00
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- grouped commands: {cmd1;cmd2}
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2003-04-09 01:43:54 +00:00
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- transliteration (y/source-chars/dest-chars/)
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- pattern space hold space storing / swapping (g, h, x)
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- labels / branching (: label, b, t)
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2003-03-09 15:12:24 +00:00
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2000-07-10 22:55:51 +00:00
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(Note: Specifying an address (range) to match is *optional*; commands
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default to the whole pattern space if no specific address match was
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requested.)
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Unsupported features:
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2003-04-09 01:43:54 +00:00
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- GNU extensions
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2003-09-13 15:12:22 +00:00
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- and more.
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2003-03-09 02:39:29 +00:00
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2003-04-09 01:43:54 +00:00
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Bugs:
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2003-09-13 15:12:22 +00:00
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- lots
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2003-04-09 01:43:54 +00:00
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2003-03-09 02:39:29 +00:00
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Reference http://www.opengroup.org/onlinepubs/007904975/utilities/sed.html
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2000-07-10 22:55:51 +00:00
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*/
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1999-10-28 16:06:25 +00:00
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#include <stdio.h>
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2003-04-08 11:56:11 +00:00
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#include <unistd.h> /* for getopt() */
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2000-07-10 22:55:51 +00:00
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#include <regex.h>
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2003-04-08 11:56:11 +00:00
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#include <string.h> /* for strdup() */
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1999-10-28 16:06:25 +00:00
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#include <errno.h>
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2003-04-08 11:56:11 +00:00
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#include <ctype.h> /* for isspace() */
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2001-01-27 08:24:39 +00:00
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#include <stdlib.h>
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2000-09-25 21:45:58 +00:00
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#include "busybox.h"
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2000-07-10 22:55:51 +00:00
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2003-03-09 10:23:57 +00:00
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typedef struct sed_cmd_s {
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2001-11-10 10:49:42 +00:00
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/* Order by alignment requirements */
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2000-11-03 19:47:00 +00:00
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2000-07-10 22:55:51 +00:00
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/* address storage */
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2003-04-08 11:56:11 +00:00
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regex_t *beg_match; /* sed -e '/match/cmd' */
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regex_t *end_match; /* sed -e '/match/,/end_match/cmd' */
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2000-07-10 22:55:51 +00:00
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2003-04-12 16:10:42 +00:00
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int beg_line; /* 'sed 1p' 0 == no begining line, apply commands to all lines */
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int end_line; /* 'sed 1,3p' 0 == no end line, use only beginning. -1 == $ */
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/* inversion flag */
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int invert; /* the '!' after the address */
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2003-09-13 06:57:39 +00:00
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/* Runtime flag no not if the current command match's */
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int still_in_range;
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2000-11-03 19:47:00 +00:00
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/* SUBSTITUTION COMMAND SPECIFIC FIELDS */
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/* sed -e 's/sub_match/replace/' */
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regex_t *sub_match;
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char *replace;
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2001-11-10 10:49:42 +00:00
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/* EDIT COMMAND (a,i,c) SPECIFIC FIELDS */
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char *editline;
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/* FILE COMMAND (r) SPECIFIC FIELDS */
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char *filename;
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/* SUBSTITUTION COMMAND SPECIFIC FIELDS */
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2003-04-08 11:56:11 +00:00
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unsigned int num_backrefs:4; /* how many back references (\1..\9) */
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/* Note: GNU/POSIX sed does not save more than nine backrefs, so
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* we only use 4 bits to hold the number */
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unsigned int sub_g:1; /* sed -e 's/foo/bar/g' (global) */
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unsigned int sub_p:1; /* sed -e 's/foo/bar/p' (print substitution) */
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2000-11-03 19:47:00 +00:00
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2003-03-30 08:02:18 +00:00
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/* TRANSLATE COMMAND */
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char *translate;
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2000-11-03 19:47:00 +00:00
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2003-03-30 08:02:18 +00:00
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/* GENERAL FIELDS */
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2001-11-10 10:49:42 +00:00
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/* the command */
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2003-04-08 11:56:11 +00:00
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char cmd; /* p,d,s (add more at your leisure :-) */
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2002-06-11 23:43:27 +00:00
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2003-03-28 04:43:39 +00:00
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/* Branch commands */
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2003-04-09 01:43:54 +00:00
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char *label;
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2003-03-28 04:43:39 +00:00
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2003-03-28 03:53:31 +00:00
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/* next command in list (sequential list of specified commands) */
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2003-04-09 01:43:54 +00:00
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struct sed_cmd_s *next;
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2003-03-28 03:53:31 +00:00
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2003-03-09 10:23:57 +00:00
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} sed_cmd_t;
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2000-07-10 22:55:51 +00:00
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2003-04-09 01:43:54 +00:00
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/* externs */
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extern void xregcomp(regex_t * preg, const char *regex, int cflags);
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extern int optind; /* in unistd.h */
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extern char *optarg; /* ditto */
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2000-07-10 22:55:51 +00:00
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/* globals */
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2003-04-09 01:43:54 +00:00
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/* options */
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static int be_quiet = 0;
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static const char bad_format_in_subst[] =
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"bad format in substitution expression";
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2003-03-28 03:53:31 +00:00
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/* linked list of sed commands */
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static sed_cmd_t sed_cmd_head;
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static sed_cmd_t *sed_cmd_tail = &sed_cmd_head;
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1999-10-28 16:06:25 +00:00
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2003-04-08 11:56:11 +00:00
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const char *const semicolon_whitespace = "; \n\r\t\v\0";
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2003-04-08 06:42:45 +00:00
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static regex_t *previous_regex_ptr = NULL;
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2001-11-10 10:49:42 +00:00
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2003-04-09 01:43:54 +00:00
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2001-10-24 05:00:29 +00:00
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#ifdef CONFIG_FEATURE_CLEAN_UP
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2001-11-20 16:00:19 +00:00
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static void destroy_cmd_strs(void)
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2000-07-10 22:55:51 +00:00
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{
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2003-04-09 01:43:54 +00:00
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sed_cmd_t *sed_cmd = sed_cmd_head.next;
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2000-07-10 22:55:51 +00:00
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2003-03-28 04:23:23 +00:00
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while (sed_cmd) {
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2003-04-09 01:43:54 +00:00
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sed_cmd_t *sed_cmd_next = sed_cmd->next;
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2000-02-08 19:58:47 +00:00
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2003-03-28 04:23:23 +00:00
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if (sed_cmd->beg_match) {
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regfree(sed_cmd->beg_match);
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free(sed_cmd->beg_match);
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2000-07-10 22:55:51 +00:00
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}
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2003-03-28 04:23:23 +00:00
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if (sed_cmd->end_match) {
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regfree(sed_cmd->end_match);
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free(sed_cmd->end_match);
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2000-07-10 22:55:51 +00:00
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}
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2003-03-28 04:23:23 +00:00
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if (sed_cmd->sub_match) {
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regfree(sed_cmd->sub_match);
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free(sed_cmd->sub_match);
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2000-07-10 22:55:51 +00:00
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}
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2003-03-28 04:23:23 +00:00
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free(sed_cmd->replace);
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2003-09-14 15:24:18 +00:00
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free(sed_cmd->editline);
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free(sed_cmd->filename);
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free(sed_cmd->translate);
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free(sed_cmd->label);
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2003-03-28 04:23:23 +00:00
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free(sed_cmd);
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sed_cmd = sed_cmd_next;
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2000-02-08 19:58:47 +00:00
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}
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2000-07-10 22:55:51 +00:00
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}
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2000-07-12 23:35:21 +00:00
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#endif
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2000-07-10 22:55:51 +00:00
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/*
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2001-01-02 11:01:31 +00:00
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* index_of_next_unescaped_regexp_delim - walks left to right through a string
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* beginning at a specified index and returns the index of the next regular
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* expression delimiter (typically a forward * slash ('/')) not preceeded by
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* a backslash ('\').
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2000-07-10 22:55:51 +00:00
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*/
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2003-04-08 11:56:11 +00:00
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static int index_of_next_unescaped_regexp_delim(const char delimiter,
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2003-04-11 17:10:23 +00:00
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const char *str)
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2000-07-10 22:55:51 +00:00
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{
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2001-08-24 14:45:50 +00:00
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int bracket = -1;
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int escaped = 0;
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2003-03-30 08:02:18 +00:00
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int idx = 0;
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2001-11-10 10:49:42 +00:00
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char ch;
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2001-08-24 14:45:50 +00:00
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2003-04-08 11:56:11 +00:00
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for (; (ch = str[idx]); idx++) {
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2001-08-24 14:45:50 +00:00
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if (bracket != -1) {
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2003-04-11 17:10:23 +00:00
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if (ch == ']' && !(bracket == idx - 1 || (bracket == idx - 2
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&& str[idx - 1] == '^')))
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2001-08-24 14:45:50 +00:00
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bracket = -1;
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} else if (escaped)
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escaped = 0;
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2001-11-10 10:49:42 +00:00
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else if (ch == '\\')
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2001-08-24 14:45:50 +00:00
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escaped = 1;
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2001-11-10 10:49:42 +00:00
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else if (ch == '[')
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2001-08-24 14:45:50 +00:00
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bracket = idx;
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2003-03-09 08:44:49 +00:00
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else if (ch == delimiter)
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2000-07-17 20:06:42 +00:00
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return idx;
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}
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2000-07-10 22:55:51 +00:00
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2000-07-17 20:06:42 +00:00
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/* if we make it to here, we've hit the end of the string */
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return -1;
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2000-07-10 22:55:51 +00:00
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}
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2003-09-14 04:06:12 +00:00
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/*
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* Returns the index of the third delimiter
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*/
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2003-03-30 08:02:18 +00:00
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static int parse_regex_delim(const char *cmdstr, char **match, char **replace)
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{
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const char *cmdstr_ptr = cmdstr;
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char delimiter;
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int idx = 0;
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2003-09-14 04:06:12 +00:00
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/* verify that the 's' or 'y' is followed by something. That something
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2003-03-30 08:02:18 +00:00
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* (typically a 'slash') is now our regexp delimiter... */
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if (*cmdstr == '\0')
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2003-03-30 09:38:40 +00:00
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bb_error_msg_and_die(bad_format_in_subst);
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2003-03-30 08:02:18 +00:00
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else
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delimiter = *cmdstr_ptr;
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cmdstr_ptr++;
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/* save the match string */
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idx = index_of_next_unescaped_regexp_delim(delimiter, cmdstr_ptr);
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if (idx == -1) {
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2003-03-30 09:38:40 +00:00
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bb_error_msg_and_die(bad_format_in_subst);
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2003-03-30 08:02:18 +00:00
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}
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*match = bb_xstrndup(cmdstr_ptr, idx);
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/* save the replacement string */
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cmdstr_ptr += idx + 1;
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idx = index_of_next_unescaped_regexp_delim(delimiter, cmdstr_ptr);
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if (idx == -1) {
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2003-03-30 09:38:40 +00:00
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bb_error_msg_and_die(bad_format_in_subst);
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2003-03-30 08:02:18 +00:00
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}
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*replace = bb_xstrndup(cmdstr_ptr, idx);
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2003-04-08 11:56:11 +00:00
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return ((cmdstr_ptr - cmdstr) + idx);
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2003-03-30 08:02:18 +00:00
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}
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2000-07-10 22:55:51 +00:00
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/*
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* returns the index in the string just past where the address ends.
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*/
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2003-04-08 11:56:11 +00:00
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static int get_address(char *my_str, int *linenum, regex_t ** regex)
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1999-12-29 22:19:46 +00:00
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{
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2003-09-15 09:22:04 +00:00
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char *pos = my_str;
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2003-04-08 11:56:11 +00:00
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2003-09-14 04:06:12 +00:00
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if (isdigit(*my_str)) {
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*linenum = strtol(my_str, &pos, 10);
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2003-03-09 08:44:49 +00:00
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/* endstr shouldnt ever equal NULL */
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2003-09-14 04:06:12 +00:00
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} else if (*my_str == '$') {
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2001-06-11 23:50:06 +00:00
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*linenum = -1;
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2003-09-14 04:06:12 +00:00
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pos++;
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} else if (*my_str == '/' || *my_str == '\\') {
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int next, idx_start = 1;
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2003-03-30 08:02:18 +00:00
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char delimiter;
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2003-03-09 08:44:49 +00:00
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2003-03-30 08:02:18 +00:00
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delimiter = '/';
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2003-09-14 04:06:12 +00:00
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if (*my_str == '\\') {
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2002-08-06 23:13:31 +00:00
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idx_start++;
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2003-09-14 04:06:12 +00:00
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delimiter = *(++pos);
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2002-08-06 21:07:17 +00:00
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}
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2003-09-14 04:06:12 +00:00
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next = index_of_next_unescaped_regexp_delim(delimiter, ++pos);
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if (next == -1) {
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2003-03-19 09:13:01 +00:00
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bb_error_msg_and_die("unterminated match expression");
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2003-03-09 08:44:49 +00:00
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}
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2003-09-14 04:06:12 +00:00
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pos += next;
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*pos = '\0';
|
2003-04-08 11:56:11 +00:00
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*regex = (regex_t *) xmalloc(sizeof(regex_t));
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xregcomp(*regex, my_str + idx_start, REG_NEWLINE);
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2003-09-14 04:06:12 +00:00
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pos++; /* so it points to the next character after the last '/' */
|
2000-07-10 22:55:51 +00:00
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}
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2003-09-14 04:06:12 +00:00
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|
|
return pos - my_str;
|
2000-07-10 22:55:51 +00:00
|
|
|
}
|
1999-12-29 22:19:46 +00:00
|
|
|
|
2003-03-09 10:23:57 +00:00
|
|
|
static int parse_subst_cmd(sed_cmd_t * const sed_cmd, const char *substr)
|
2000-07-13 19:58:04 +00:00
|
|
|
{
|
2003-03-18 08:37:57 +00:00
|
|
|
int cflags = 0;
|
2000-07-13 19:58:04 +00:00
|
|
|
char *match;
|
|
|
|
int idx = 0;
|
2000-07-17 20:06:42 +00:00
|
|
|
int j;
|
2000-07-13 19:58:04 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* the string that gets passed to this function should look like this:
|
2000-08-21 21:29:20 +00:00
|
|
|
* s/match/replace/gIp
|
|
|
|
* || | |||
|
2000-07-13 19:58:04 +00:00
|
|
|
* mandatory optional
|
|
|
|
*
|
|
|
|
* (all three of the '/' slashes are mandatory)
|
|
|
|
*/
|
2003-03-30 08:02:18 +00:00
|
|
|
idx = parse_regex_delim(substr, &match, &sed_cmd->replace);
|
2000-07-13 19:58:04 +00:00
|
|
|
|
2000-07-17 20:06:42 +00:00
|
|
|
/* determine the number of back references in the match string */
|
|
|
|
/* Note: we compute this here rather than in the do_subst_command()
|
|
|
|
* function to save processor time, at the expense of a little more memory
|
|
|
|
* (4 bits) per sed_cmd */
|
2003-04-08 11:56:11 +00:00
|
|
|
|
2000-07-17 20:06:42 +00:00
|
|
|
for (j = 0; match[j]; j++) {
|
|
|
|
/* GNU/POSIX sed does not save more than nine backrefs */
|
2003-04-08 11:56:11 +00:00
|
|
|
if (match[j] == '\\' && match[j + 1] == '('
|
|
|
|
&& sed_cmd->num_backrefs <= 9)
|
2000-07-17 20:06:42 +00:00
|
|
|
sed_cmd->num_backrefs++;
|
|
|
|
}
|
|
|
|
|
2000-07-13 19:58:04 +00:00
|
|
|
/* process the flags */
|
|
|
|
while (substr[++idx]) {
|
|
|
|
switch (substr[idx]) {
|
2003-04-08 11:56:11 +00:00
|
|
|
case 'g':
|
2003-09-13 15:12:22 +00:00
|
|
|
if (match[0] != '^') {
|
|
|
|
sed_cmd->sub_g = 1;
|
|
|
|
}
|
2003-04-08 11:56:11 +00:00
|
|
|
break;
|
2003-03-10 02:21:14 +00:00
|
|
|
/* Hmm, i dont see the I option mentioned in the standard */
|
2003-04-08 11:56:11 +00:00
|
|
|
case 'I':
|
|
|
|
cflags |= REG_ICASE;
|
|
|
|
break;
|
|
|
|
case 'p':
|
|
|
|
sed_cmd->sub_p = 1;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
/* any whitespace or semicolon trailing after a s/// is ok */
|
|
|
|
if (strchr(semicolon_whitespace, substr[idx]))
|
|
|
|
goto out;
|
|
|
|
/* else */
|
|
|
|
bb_error_msg_and_die("bad option in substitution expression");
|
2000-07-13 19:58:04 +00:00
|
|
|
}
|
|
|
|
}
|
2000-07-14 19:06:30 +00:00
|
|
|
|
2003-04-08 11:56:11 +00:00
|
|
|
out:
|
2000-07-17 20:06:42 +00:00
|
|
|
/* compile the match string into a regex */
|
2003-04-08 06:42:45 +00:00
|
|
|
if (*match != '\0') {
|
|
|
|
/* If match is empty, we use last regex used at runtime */
|
2003-04-08 11:56:11 +00:00
|
|
|
sed_cmd->sub_match = (regex_t *) xmalloc(sizeof(regex_t));
|
2003-04-08 06:42:45 +00:00
|
|
|
xregcomp(sed_cmd->sub_match, match, cflags);
|
|
|
|
}
|
2000-07-13 19:58:04 +00:00
|
|
|
free(match);
|
2000-07-14 19:06:30 +00:00
|
|
|
|
|
|
|
return idx;
|
2000-07-13 19:58:04 +00:00
|
|
|
}
|
|
|
|
|
2003-03-30 08:02:18 +00:00
|
|
|
static void replace_slash_n(char *string)
|
|
|
|
{
|
2003-09-14 04:06:12 +00:00
|
|
|
char *dest;
|
2003-03-30 08:02:18 +00:00
|
|
|
|
2003-09-14 04:06:12 +00:00
|
|
|
for (dest = string; *string; string++, dest++) {
|
|
|
|
if ((string[0] == '\\') && (string[1] == 'n')) {
|
|
|
|
*dest = '\n';
|
|
|
|
string++;
|
2003-03-30 08:02:18 +00:00
|
|
|
} else {
|
2003-09-14 04:06:12 +00:00
|
|
|
*dest = *string;
|
2003-03-30 08:02:18 +00:00
|
|
|
}
|
|
|
|
}
|
2003-09-14 04:06:12 +00:00
|
|
|
*dest=0;
|
2003-03-30 08:02:18 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static int parse_translate_cmd(sed_cmd_t * const sed_cmd, const char *cmdstr)
|
|
|
|
{
|
|
|
|
char *match;
|
|
|
|
char *replace;
|
|
|
|
int idx;
|
|
|
|
int i;
|
|
|
|
|
|
|
|
idx = parse_regex_delim(cmdstr, &match, &replace);
|
|
|
|
replace_slash_n(match);
|
|
|
|
replace_slash_n(replace);
|
|
|
|
sed_cmd->translate = xcalloc(1, (strlen(match) + 1) * 2);
|
|
|
|
for (i = 0; (match[i] != 0) && (replace[i] != 0); i++) {
|
|
|
|
sed_cmd->translate[i * 2] = match[i];
|
|
|
|
sed_cmd->translate[(i * 2) + 1] = replace[i];
|
|
|
|
}
|
2003-04-08 11:56:11 +00:00
|
|
|
return (idx + 1);
|
2003-03-30 08:02:18 +00:00
|
|
|
}
|
|
|
|
|
2003-04-08 11:56:11 +00:00
|
|
|
static int parse_edit_cmd(sed_cmd_t * sed_cmd, const char *editstr)
|
2000-07-14 00:00:15 +00:00
|
|
|
{
|
2002-01-03 21:12:34 +00:00
|
|
|
int i, j;
|
2000-07-14 00:00:15 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* the string that gets passed to this function should look like this:
|
|
|
|
*
|
|
|
|
* need one of these
|
|
|
|
* |
|
|
|
|
* | this backslash (immediately following the edit command) is mandatory
|
|
|
|
* | |
|
|
|
|
* [aic]\
|
|
|
|
* TEXT1\
|
|
|
|
* TEXT2\
|
|
|
|
* TEXTN
|
|
|
|
*
|
|
|
|
* as soon as we hit a TEXT line that has no trailing '\', we're done.
|
|
|
|
* this means a command like:
|
|
|
|
*
|
|
|
|
* i\
|
|
|
|
* INSERTME
|
|
|
|
*
|
|
|
|
* is a-ok.
|
|
|
|
*
|
|
|
|
*/
|
2003-03-09 15:12:24 +00:00
|
|
|
if ((*editstr != '\\') || ((editstr[1] != '\n') && (editstr[1] != '\r'))) {
|
2003-03-19 09:13:01 +00:00
|
|
|
bb_error_msg_and_die("bad format in edit expression");
|
2003-03-09 15:12:24 +00:00
|
|
|
}
|
2000-07-14 00:00:15 +00:00
|
|
|
|
|
|
|
/* store the edit line text */
|
2003-03-09 15:12:24 +00:00
|
|
|
sed_cmd->editline = xmalloc(strlen(&editstr[2]) + 2);
|
2003-04-08 11:56:11 +00:00
|
|
|
for (i = 2, j = 0;
|
2003-04-11 17:10:23 +00:00
|
|
|
editstr[i] != '\0' && strchr("\r\n", editstr[i]) == NULL; i++, j++) {
|
2003-04-08 11:56:11 +00:00
|
|
|
if ((editstr[i] == '\\') && strchr("\n\r", editstr[i + 1]) != NULL) {
|
2002-01-03 21:12:34 +00:00
|
|
|
sed_cmd->editline[j] = '\n';
|
|
|
|
i++;
|
|
|
|
} else
|
|
|
|
sed_cmd->editline[j] = editstr[i];
|
2000-07-14 00:00:15 +00:00
|
|
|
}
|
2000-07-14 19:06:30 +00:00
|
|
|
|
2001-04-20 23:41:44 +00:00
|
|
|
/* figure out if we need to add a newline */
|
2003-04-08 11:56:11 +00:00
|
|
|
if (sed_cmd->editline[j - 1] != '\n')
|
2002-01-03 21:12:34 +00:00
|
|
|
sed_cmd->editline[j++] = '\n';
|
2001-04-20 23:41:44 +00:00
|
|
|
|
|
|
|
/* terminate string */
|
2002-01-03 21:12:34 +00:00
|
|
|
sed_cmd->editline[j] = '\0';
|
2000-07-14 23:24:00 +00:00
|
|
|
|
2002-01-03 21:12:34 +00:00
|
|
|
return i;
|
2000-07-14 00:00:15 +00:00
|
|
|
}
|
|
|
|
|
2001-05-11 22:27:13 +00:00
|
|
|
|
2003-04-08 11:56:11 +00:00
|
|
|
static int parse_file_cmd(sed_cmd_t * sed_cmd, const char *filecmdstr)
|
2001-05-11 22:27:13 +00:00
|
|
|
{
|
|
|
|
int idx = 0;
|
|
|
|
int filenamelen = 0;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* the string that gets passed to this function should look like this:
|
|
|
|
* '[ ]filename'
|
|
|
|
* | |
|
|
|
|
* | a filename
|
|
|
|
* |
|
|
|
|
* optional whitespace
|
|
|
|
|
|
|
|
* re: the file to be read, the GNU manual says the following: "Note that
|
|
|
|
* if filename cannot be read, it is treated as if it were an empty file,
|
|
|
|
* without any error indication." Thus, all of the following commands are
|
2003-09-14 04:06:12 +00:00
|
|
|
* perfectly legal:
|
2001-05-11 22:27:13 +00:00
|
|
|
*
|
|
|
|
* sed -e '1r noexist'
|
|
|
|
* sed -e '1r ;'
|
|
|
|
* sed -e '1r'
|
|
|
|
*/
|
|
|
|
|
|
|
|
/* the file command may be followed by whitespace; move past it. */
|
2003-04-08 11:56:11 +00:00
|
|
|
while (isspace(filecmdstr[++idx])) {;
|
|
|
|
}
|
|
|
|
|
2001-05-11 22:27:13 +00:00
|
|
|
/* the first non-whitespace we get is a filename. the filename ends when we
|
|
|
|
* hit a normal sed command terminator or end of string */
|
2001-11-10 10:49:42 +00:00
|
|
|
filenamelen = strcspn(&filecmdstr[idx], semicolon_whitespace);
|
2001-05-27 14:11:52 +00:00
|
|
|
sed_cmd->filename = xmalloc(filenamelen + 1);
|
|
|
|
safe_strncpy(sed_cmd->filename, &filecmdstr[idx], filenamelen + 1);
|
2001-05-11 22:27:13 +00:00
|
|
|
return idx + filenamelen;
|
|
|
|
}
|
|
|
|
|
2003-03-18 01:19:23 +00:00
|
|
|
/*
|
|
|
|
* Process the commands arguments
|
|
|
|
*/
|
2003-04-11 17:10:23 +00:00
|
|
|
static char *parse_cmd_str(sed_cmd_t * sed_cmd, char *cmdstr)
|
2000-07-10 22:55:51 +00:00
|
|
|
{
|
2003-03-09 15:12:24 +00:00
|
|
|
/* handle (s)ubstitution command */
|
2003-03-18 01:19:23 +00:00
|
|
|
if (sed_cmd->cmd == 's') {
|
2003-03-09 15:12:24 +00:00
|
|
|
cmdstr += parse_subst_cmd(sed_cmd, cmdstr);
|
|
|
|
}
|
|
|
|
/* handle edit cmds: (a)ppend, (i)nsert, and (c)hange */
|
|
|
|
else if (strchr("aic", sed_cmd->cmd)) {
|
|
|
|
if ((sed_cmd->end_line || sed_cmd->end_match) && sed_cmd->cmd != 'c')
|
2003-04-08 11:56:11 +00:00
|
|
|
bb_error_msg_and_die
|
|
|
|
("only a beginning address can be specified for edit commands");
|
2003-03-09 15:12:24 +00:00
|
|
|
cmdstr += parse_edit_cmd(sed_cmd, cmdstr);
|
|
|
|
}
|
|
|
|
/* handle file cmds: (r)ead */
|
|
|
|
else if (sed_cmd->cmd == 'r') {
|
|
|
|
if (sed_cmd->end_line || sed_cmd->end_match)
|
2003-03-19 09:13:01 +00:00
|
|
|
bb_error_msg_and_die("Command only uses one address");
|
2003-03-09 15:12:24 +00:00
|
|
|
cmdstr += parse_file_cmd(sed_cmd, cmdstr);
|
|
|
|
}
|
2003-03-28 04:43:39 +00:00
|
|
|
/* handle branch commands */
|
2003-03-28 08:36:52 +00:00
|
|
|
else if (strchr(":bt", sed_cmd->cmd)) {
|
2003-03-28 04:43:39 +00:00
|
|
|
int length;
|
|
|
|
|
|
|
|
cmdstr += strspn(cmdstr, " ");
|
2003-09-14 06:01:14 +00:00
|
|
|
length = strcspn(cmdstr, semicolon_whitespace);
|
|
|
|
if (length) {
|
|
|
|
sed_cmd->label = strndup(cmdstr, length);
|
|
|
|
cmdstr += length;
|
|
|
|
}
|
2003-03-28 04:43:39 +00:00
|
|
|
}
|
2003-03-30 08:02:18 +00:00
|
|
|
/* translation command */
|
|
|
|
else if (sed_cmd->cmd == 'y') {
|
|
|
|
cmdstr += parse_translate_cmd(sed_cmd, cmdstr);
|
|
|
|
}
|
2003-03-18 01:19:23 +00:00
|
|
|
/* if it wasnt a single-letter command that takes no arguments
|
|
|
|
* then it must be an invalid command.
|
|
|
|
*/
|
2003-04-26 07:40:07 +00:00
|
|
|
else if (strchr("dgGhHnNpPqx={}", sed_cmd->cmd) == 0) {
|
2003-03-19 09:13:01 +00:00
|
|
|
bb_error_msg_and_die("Unsupported command %c", sed_cmd->cmd);
|
2003-03-09 15:12:24 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/* give back whatever's left over */
|
2003-04-08 11:56:11 +00:00
|
|
|
return (cmdstr);
|
2003-03-09 15:12:24 +00:00
|
|
|
}
|
|
|
|
|
2003-09-14 04:06:12 +00:00
|
|
|
static char *add_cmd(char *cmdstr)
|
2003-03-09 15:12:24 +00:00
|
|
|
{
|
2003-09-14 04:06:12 +00:00
|
|
|
sed_cmd_t *sed_cmd;
|
|
|
|
|
2003-03-09 15:12:24 +00:00
|
|
|
/* Skip over leading whitespace and semicolons */
|
|
|
|
cmdstr += strspn(cmdstr, semicolon_whitespace);
|
|
|
|
|
|
|
|
/* if we ate the whole thing, that means there was just trailing
|
|
|
|
* whitespace or a final / no-op semicolon. either way, get out */
|
|
|
|
if (*cmdstr == '\0') {
|
2003-04-08 11:56:11 +00:00
|
|
|
return (NULL);
|
2003-03-09 15:12:24 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/* if this is a comment, jump past it and keep going */
|
|
|
|
if (*cmdstr == '#') {
|
2003-04-08 06:42:45 +00:00
|
|
|
/* "#n" is the same as using -n on the command line */
|
|
|
|
if (cmdstr[1] == 'n') {
|
|
|
|
be_quiet++;
|
|
|
|
}
|
2003-04-08 11:56:11 +00:00
|
|
|
return (strpbrk(cmdstr, "\n\r"));
|
2003-03-09 15:12:24 +00:00
|
|
|
}
|
2003-04-08 11:56:11 +00:00
|
|
|
|
2000-07-10 22:55:51 +00:00
|
|
|
/* parse the command
|
|
|
|
* format is: [addr][,addr]cmd
|
|
|
|
* |----||-----||-|
|
|
|
|
* part1 part2 part3
|
|
|
|
*/
|
|
|
|
|
2003-09-14 04:06:12 +00:00
|
|
|
sed_cmd = xcalloc(1, sizeof(sed_cmd_t));
|
|
|
|
|
2003-03-08 05:21:02 +00:00
|
|
|
/* first part (if present) is an address: either a '$', a number or a /regex/ */
|
2003-03-30 08:02:18 +00:00
|
|
|
cmdstr += get_address(cmdstr, &sed_cmd->beg_line, &sed_cmd->beg_match);
|
2000-07-10 22:55:51 +00:00
|
|
|
|
|
|
|
/* second part (if present) will begin with a comma */
|
2003-03-09 11:06:38 +00:00
|
|
|
if (*cmdstr == ',') {
|
2003-03-09 15:12:24 +00:00
|
|
|
int idx;
|
2003-04-08 11:56:11 +00:00
|
|
|
|
2003-03-09 11:06:38 +00:00
|
|
|
cmdstr++;
|
2003-03-30 08:02:18 +00:00
|
|
|
idx = get_address(cmdstr, &sed_cmd->end_line, &sed_cmd->end_match);
|
2003-03-09 15:12:24 +00:00
|
|
|
if (idx == 0) {
|
2003-03-19 09:13:01 +00:00
|
|
|
bb_error_msg_and_die("get_address: no address found in string\n"
|
2003-04-11 17:10:23 +00:00
|
|
|
"\t(you probably didn't check the string you passed me)");
|
2003-03-09 08:44:49 +00:00
|
|
|
}
|
2003-03-09 15:12:24 +00:00
|
|
|
cmdstr += idx;
|
2002-07-11 11:11:56 +00:00
|
|
|
}
|
2000-07-10 22:55:51 +00:00
|
|
|
|
2001-12-21 16:04:12 +00:00
|
|
|
/* skip whitespace before the command */
|
2003-03-09 15:12:24 +00:00
|
|
|
while (isspace(*cmdstr)) {
|
2003-03-09 11:06:38 +00:00
|
|
|
cmdstr++;
|
2003-03-09 15:12:24 +00:00
|
|
|
}
|
2001-12-21 16:04:12 +00:00
|
|
|
|
2002-06-11 23:43:27 +00:00
|
|
|
/* there my be the inversion flag between part2 and part3 */
|
2003-03-09 11:06:38 +00:00
|
|
|
if (*cmdstr == '!') {
|
2002-06-11 23:43:27 +00:00
|
|
|
sed_cmd->invert = 1;
|
2003-03-09 11:06:38 +00:00
|
|
|
cmdstr++;
|
2002-06-11 23:43:27 +00:00
|
|
|
|
2003-03-09 02:39:29 +00:00
|
|
|
#ifdef SED_FEATURE_STRICT_CHECKING
|
|
|
|
/* According to the spec
|
|
|
|
* It is unspecified whether <blank>s can follow a '!' character,
|
|
|
|
* and conforming applications shall not follow a '!' character
|
|
|
|
* with <blank>s.
|
|
|
|
*/
|
2003-03-09 15:12:24 +00:00
|
|
|
if (isblank(cmdstr[idx]) {
|
2003-04-08 11:56:11 +00:00
|
|
|
bb_error_msg_and_die("blank follows '!'");}
|
|
|
|
#else
|
2002-06-11 23:43:27 +00:00
|
|
|
/* skip whitespace before the command */
|
2003-03-09 15:12:24 +00:00
|
|
|
while (isspace(*cmdstr)) {
|
2003-03-09 11:06:38 +00:00
|
|
|
cmdstr++;
|
2003-03-09 15:12:24 +00:00
|
|
|
}
|
2003-03-09 02:39:29 +00:00
|
|
|
#endif
|
2002-06-11 23:43:27 +00:00
|
|
|
}
|
|
|
|
|
2000-07-10 22:55:51 +00:00
|
|
|
/* last part (mandatory) will be a command */
|
2003-03-09 11:06:38 +00:00
|
|
|
if (*cmdstr == '\0')
|
2003-03-19 09:13:01 +00:00
|
|
|
bb_error_msg_and_die("missing command");
|
2003-03-09 11:06:38 +00:00
|
|
|
|
|
|
|
sed_cmd->cmd = *cmdstr;
|
2003-03-09 15:12:24 +00:00
|
|
|
cmdstr++;
|
|
|
|
|
2003-04-08 06:42:45 +00:00
|
|
|
cmdstr = parse_cmd_str(sed_cmd, cmdstr);
|
|
|
|
|
|
|
|
/* Add the command to the command array */
|
2003-04-09 01:43:54 +00:00
|
|
|
sed_cmd_tail->next = sed_cmd;
|
|
|
|
sed_cmd_tail = sed_cmd_tail->next;
|
2003-04-08 06:42:45 +00:00
|
|
|
|
2003-04-08 11:56:11 +00:00
|
|
|
return (cmdstr);
|
1999-12-29 22:19:46 +00:00
|
|
|
}
|
|
|
|
|
2003-09-15 09:22:04 +00:00
|
|
|
static void add_cmd_str(const char *cmdstr)
|
1999-12-29 22:19:46 +00:00
|
|
|
{
|
2003-09-15 09:22:04 +00:00
|
|
|
char *cmdstr_expanded = strdup(cmdstr);
|
|
|
|
char *cmdstr_ptr;
|
2003-03-30 03:41:53 +00:00
|
|
|
|
2003-09-15 09:22:04 +00:00
|
|
|
#ifdef CONFIG_FEATURE_SED_EMBEDED_NEWLINE
|
|
|
|
cmdstr_ptr = cmdstr_expanded;
|
2003-03-30 03:41:53 +00:00
|
|
|
/* HACK: convert "\n" to match tranlated '\n' string */
|
2003-04-08 11:56:11 +00:00
|
|
|
while ((cmdstr_ptr = strstr(cmdstr_ptr, "\\n")) != NULL) {
|
2003-09-15 09:22:04 +00:00
|
|
|
int length = strlen(cmdstr) + 2;
|
|
|
|
cmdstr_expanded = realloc(cmdstr_expanded, length);
|
|
|
|
cmdstr_ptr = strstr(cmdstr_expanded, "\\n");
|
2003-03-30 03:41:53 +00:00
|
|
|
memmove(cmdstr_ptr + 1, cmdstr_ptr, strlen(cmdstr_ptr) + 1);
|
|
|
|
cmdstr_ptr[0] = '\\';
|
|
|
|
cmdstr_ptr += 3;
|
|
|
|
}
|
|
|
|
#endif
|
2003-09-15 09:22:04 +00:00
|
|
|
cmdstr_ptr = cmdstr_expanded;
|
2000-07-14 19:06:30 +00:00
|
|
|
do {
|
2003-09-15 09:22:04 +00:00
|
|
|
cmdstr_ptr = add_cmd(cmdstr_ptr);
|
|
|
|
} while (cmdstr_ptr && strlen(cmdstr_ptr));
|
|
|
|
|
|
|
|
free(cmdstr_expanded);
|
1999-11-09 01:47:36 +00:00
|
|
|
}
|
1999-10-28 16:06:25 +00:00
|
|
|
|
2000-07-10 22:55:51 +00:00
|
|
|
|
2003-09-15 09:22:04 +00:00
|
|
|
static void load_cmd_file(const char *filename)
|
1999-10-28 16:06:25 +00:00
|
|
|
{
|
2000-07-10 22:55:51 +00:00
|
|
|
FILE *cmdfile;
|
|
|
|
char *line;
|
2000-07-14 00:00:15 +00:00
|
|
|
char *nextline;
|
2003-03-19 09:13:01 +00:00
|
|
|
char *e;
|
2000-07-10 22:55:51 +00:00
|
|
|
|
2003-03-19 09:13:01 +00:00
|
|
|
cmdfile = bb_xfopen(filename, "r");
|
2000-07-10 22:55:51 +00:00
|
|
|
|
2003-03-19 09:13:01 +00:00
|
|
|
while ((line = bb_get_line_from_file(cmdfile)) != NULL) {
|
2000-07-14 00:00:15 +00:00
|
|
|
/* if a line ends with '\' it needs the next line appended to it */
|
2003-03-19 09:13:01 +00:00
|
|
|
while (((e = last_char_is(line, '\n')) != NULL)
|
2003-04-11 17:10:23 +00:00
|
|
|
&& (e > line) && (e[-1] == '\\')
|
|
|
|
&& ((nextline = bb_get_line_from_file(cmdfile)) != NULL)) {
|
2003-03-19 09:13:01 +00:00
|
|
|
line = xrealloc(line, (e - line) + 1 + strlen(nextline) + 1);
|
2000-07-14 00:00:15 +00:00
|
|
|
strcat(line, nextline);
|
2000-07-14 23:24:00 +00:00
|
|
|
free(nextline);
|
2000-07-14 00:00:15 +00:00
|
|
|
}
|
2000-07-14 23:24:00 +00:00
|
|
|
/* eat trailing newline (if any) --if I don't do this, edit commands
|
|
|
|
* (aic) will print an extra newline */
|
2001-02-01 16:49:30 +00:00
|
|
|
chomp(line);
|
2000-07-10 22:55:51 +00:00
|
|
|
add_cmd_str(line);
|
|
|
|
free(line);
|
2000-02-08 19:58:47 +00:00
|
|
|
}
|
2000-07-10 22:55:51 +00:00
|
|
|
}
|
1999-12-29 22:19:46 +00:00
|
|
|
|
2001-11-10 10:49:42 +00:00
|
|
|
struct pipeline {
|
|
|
|
char *buf;
|
|
|
|
int idx;
|
|
|
|
int len;
|
|
|
|
};
|
|
|
|
|
2001-08-22 05:58:16 +00:00
|
|
|
#define PIPE_MAGIC 0x7f
|
2003-04-08 11:56:11 +00:00
|
|
|
#define PIPE_GROW 64
|
2001-11-10 10:49:42 +00:00
|
|
|
|
|
|
|
void pipe_putc(struct pipeline *const pipeline, char c)
|
|
|
|
{
|
|
|
|
if (pipeline->buf[pipeline->idx] == PIPE_MAGIC) {
|
2003-04-08 11:56:11 +00:00
|
|
|
pipeline->buf = xrealloc(pipeline->buf, pipeline->len + PIPE_GROW);
|
2001-11-10 10:49:42 +00:00
|
|
|
memset(pipeline->buf + pipeline->len, 0, PIPE_GROW);
|
|
|
|
pipeline->len += PIPE_GROW;
|
|
|
|
pipeline->buf[pipeline->len - 1] = PIPE_MAGIC;
|
|
|
|
}
|
|
|
|
pipeline->buf[pipeline->idx++] = (c);
|
|
|
|
}
|
|
|
|
|
|
|
|
#define pipeputc(c) pipe_putc(pipeline, c)
|
|
|
|
|
2003-04-08 11:56:11 +00:00
|
|
|
static void print_subst_w_backrefs(const char *line, const char *replace,
|
2003-04-11 17:10:23 +00:00
|
|
|
regmatch_t * regmatch, struct pipeline *const pipeline, int matches)
|
2000-07-17 20:06:42 +00:00
|
|
|
{
|
|
|
|
int i;
|
|
|
|
|
|
|
|
/* go through the replacement string */
|
|
|
|
for (i = 0; replace[i]; i++) {
|
|
|
|
/* if we find a backreference (\1, \2, etc.) print the backref'ed * text */
|
2003-04-08 11:56:11 +00:00
|
|
|
if (replace[i] == '\\' && isdigit(replace[i + 1])) {
|
2000-07-17 20:06:42 +00:00
|
|
|
int j;
|
|
|
|
char tmpstr[2];
|
|
|
|
int backref;
|
2003-04-08 11:56:11 +00:00
|
|
|
|
|
|
|
++i; /* i now indexes the backref number, instead of the leading slash */
|
2000-07-17 20:06:42 +00:00
|
|
|
tmpstr[0] = replace[i];
|
|
|
|
tmpstr[1] = 0;
|
|
|
|
backref = atoi(tmpstr);
|
|
|
|
/* print out the text held in regmatch[backref] */
|
2001-08-20 21:21:06 +00:00
|
|
|
if (backref <= matches && regmatch[backref].rm_so != -1)
|
2003-04-08 11:56:11 +00:00
|
|
|
for (j = regmatch[backref].rm_so; j < regmatch[backref].rm_eo;
|
2003-04-11 17:10:23 +00:00
|
|
|
j++)
|
2001-08-22 05:58:16 +00:00
|
|
|
pipeputc(line[j]);
|
2000-07-17 20:06:42 +00:00
|
|
|
}
|
|
|
|
|
2000-07-25 20:48:44 +00:00
|
|
|
/* if we find a backslash escaped character, print the character */
|
|
|
|
else if (replace[i] == '\\') {
|
|
|
|
++i;
|
2001-08-22 05:58:16 +00:00
|
|
|
pipeputc(replace[i]);
|
2000-07-25 20:48:44 +00:00
|
|
|
}
|
|
|
|
|
2000-07-17 20:06:42 +00:00
|
|
|
/* if we find an unescaped '&' print out the whole matched text.
|
|
|
|
* fortunately, regmatch[0] contains the indicies to the whole matched
|
|
|
|
* expression (kinda seems like it was designed for just such a
|
|
|
|
* purpose...) */
|
2003-04-09 07:51:43 +00:00
|
|
|
else if (replace[i] == '&') {
|
2000-07-17 20:06:42 +00:00
|
|
|
int j;
|
2003-04-11 17:10:23 +00:00
|
|
|
|
2000-07-17 20:06:42 +00:00
|
|
|
for (j = regmatch[0].rm_so; j < regmatch[0].rm_eo; j++)
|
2001-08-22 05:58:16 +00:00
|
|
|
pipeputc(line[j]);
|
2000-07-17 20:06:42 +00:00
|
|
|
}
|
|
|
|
/* nothing special, just print this char of the replacement string to stdout */
|
|
|
|
else
|
2001-08-22 05:58:16 +00:00
|
|
|
pipeputc(replace[i]);
|
2000-07-17 20:06:42 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2003-04-08 11:56:11 +00:00
|
|
|
static int do_subst_command(sed_cmd_t * sed_cmd, char **line)
|
2000-07-13 20:01:58 +00:00
|
|
|
{
|
2001-08-22 05:58:16 +00:00
|
|
|
char *hackline = *line;
|
2003-04-08 11:56:11 +00:00
|
|
|
struct pipeline thepipe = { NULL, 0, 0 };
|
2001-11-10 10:49:42 +00:00
|
|
|
struct pipeline *const pipeline = &thepipe;
|
2000-07-13 20:01:58 +00:00
|
|
|
int altered = 0;
|
2003-04-08 06:42:45 +00:00
|
|
|
int result;
|
2000-11-03 19:47:00 +00:00
|
|
|
regmatch_t *regmatch = NULL;
|
2003-04-08 06:42:45 +00:00
|
|
|
regex_t *current_regex;
|
|
|
|
|
|
|
|
if (sed_cmd->sub_match == NULL) {
|
|
|
|
current_regex = previous_regex_ptr;
|
|
|
|
} else {
|
|
|
|
previous_regex_ptr = current_regex = sed_cmd->sub_match;
|
|
|
|
}
|
|
|
|
result = regexec(current_regex, hackline, 0, NULL, 0);
|
2000-07-13 20:01:58 +00:00
|
|
|
|
2000-11-03 19:47:00 +00:00
|
|
|
/* we only proceed if the substitution 'search' expression matches */
|
2003-04-08 06:42:45 +00:00
|
|
|
if (result == REG_NOMATCH) {
|
2000-11-03 19:47:00 +00:00
|
|
|
return 0;
|
2003-04-08 06:42:45 +00:00
|
|
|
}
|
2000-07-17 20:06:42 +00:00
|
|
|
|
2000-11-03 19:47:00 +00:00
|
|
|
/* whaddaya know, it matched. get the number of back references */
|
2003-04-08 11:56:11 +00:00
|
|
|
regmatch = xmalloc(sizeof(regmatch_t) * (sed_cmd->num_backrefs + 1));
|
2000-07-17 20:06:42 +00:00
|
|
|
|
2001-08-22 05:58:16 +00:00
|
|
|
/* allocate more PIPE_GROW bytes
|
|
|
|
if replaced string is larger than original */
|
2003-04-08 11:56:11 +00:00
|
|
|
thepipe.len = strlen(hackline) + PIPE_GROW;
|
2001-11-10 10:49:42 +00:00
|
|
|
thepipe.buf = xcalloc(1, thepipe.len);
|
2001-08-22 05:58:16 +00:00
|
|
|
/* buffer magic */
|
2003-04-08 11:56:11 +00:00
|
|
|
thepipe.buf[thepipe.len - 1] = PIPE_MAGIC;
|
2001-08-22 05:58:16 +00:00
|
|
|
|
2000-11-03 19:47:00 +00:00
|
|
|
/* and now, as long as we've got a line to try matching and if we can match
|
|
|
|
* the search string, we make substitutions */
|
2003-04-11 17:10:23 +00:00
|
|
|
while ((*hackline || !altered)
|
|
|
|
&& (regexec(current_regex, hackline, sed_cmd->num_backrefs + 1,
|
|
|
|
regmatch, 0) != REG_NOMATCH)) {
|
2000-11-03 19:47:00 +00:00
|
|
|
int i;
|
2000-07-13 20:01:58 +00:00
|
|
|
|
2000-11-03 19:47:00 +00:00
|
|
|
/* print everything before the match */
|
|
|
|
for (i = 0; i < regmatch[0].rm_so; i++)
|
2001-08-22 05:58:16 +00:00
|
|
|
pipeputc(hackline[i]);
|
2000-07-13 20:01:58 +00:00
|
|
|
|
2000-11-03 19:47:00 +00:00
|
|
|
/* then print the substitution string */
|
2003-04-11 17:10:23 +00:00
|
|
|
print_subst_w_backrefs(hackline, sed_cmd->replace, regmatch, pipeline,
|
|
|
|
sed_cmd->num_backrefs);
|
2000-11-03 19:47:00 +00:00
|
|
|
|
|
|
|
/* advance past the match */
|
|
|
|
hackline += regmatch[0].rm_eo;
|
|
|
|
/* flag that something has changed */
|
|
|
|
altered++;
|
2000-07-17 20:06:42 +00:00
|
|
|
|
2000-11-03 19:47:00 +00:00
|
|
|
/* if we're not doing this globally, get out now */
|
2003-04-07 16:04:14 +00:00
|
|
|
if (!sed_cmd->sub_g) {
|
2000-11-03 19:47:00 +00:00
|
|
|
break;
|
2003-04-07 16:04:14 +00:00
|
|
|
}
|
2000-07-13 20:01:58 +00:00
|
|
|
}
|
2003-04-08 11:56:11 +00:00
|
|
|
for (; *hackline; hackline++)
|
|
|
|
pipeputc(*hackline);
|
|
|
|
if (thepipe.buf[thepipe.idx] == PIPE_MAGIC)
|
|
|
|
thepipe.buf[thepipe.idx] = 0;
|
2000-11-03 19:47:00 +00:00
|
|
|
|
|
|
|
/* cleanup */
|
|
|
|
free(regmatch);
|
|
|
|
|
2001-08-22 05:58:16 +00:00
|
|
|
free(*line);
|
2001-11-10 10:49:42 +00:00
|
|
|
*line = thepipe.buf;
|
2000-07-13 20:01:58 +00:00
|
|
|
return altered;
|
|
|
|
}
|
2000-03-06 19:20:35 +00:00
|
|
|
|
2003-03-28 04:43:39 +00:00
|
|
|
static sed_cmd_t *branch_to(const char *label)
|
|
|
|
{
|
|
|
|
sed_cmd_t *sed_cmd;
|
2003-04-11 17:10:23 +00:00
|
|
|
|
2003-04-09 01:43:54 +00:00
|
|
|
for (sed_cmd = sed_cmd_head.next; sed_cmd; sed_cmd = sed_cmd->next) {
|
2003-09-14 06:01:14 +00:00
|
|
|
if ((sed_cmd->cmd == ':') && (sed_cmd->label) && (strcmp(sed_cmd->label, label) == 0)) {
|
|
|
|
return (sed_cmd);
|
2003-03-28 04:43:39 +00:00
|
|
|
}
|
|
|
|
}
|
2003-09-14 06:01:14 +00:00
|
|
|
bb_error_msg_and_die("Can't find label for jump to `%s'", label);
|
2003-03-28 04:43:39 +00:00
|
|
|
}
|
2000-07-10 22:55:51 +00:00
|
|
|
|
2003-04-08 11:56:11 +00:00
|
|
|
static void process_file(FILE * file)
|
2000-07-10 22:55:51 +00:00
|
|
|
{
|
2003-04-07 12:24:44 +00:00
|
|
|
char *pattern_space; /* Posix requires it be able to hold at least 8192 bytes */
|
2003-04-07 16:04:14 +00:00
|
|
|
char *hold_space = NULL; /* Posix requires it be able to hold at least 8192 bytes */
|
2003-04-08 11:56:11 +00:00
|
|
|
static int linenum = 0; /* GNU sed does not restart counting lines at EOF */
|
2001-06-11 23:50:06 +00:00
|
|
|
int altered;
|
2003-03-28 14:11:34 +00:00
|
|
|
int force_print;
|
2000-07-10 22:55:51 +00:00
|
|
|
|
2003-04-07 12:24:44 +00:00
|
|
|
pattern_space = bb_get_chomped_line_from_file(file);
|
|
|
|
if (pattern_space == NULL) {
|
2003-03-08 05:21:02 +00:00
|
|
|
return;
|
|
|
|
}
|
2003-04-12 16:10:42 +00:00
|
|
|
|
2000-07-10 22:55:51 +00:00
|
|
|
/* go through every line in the file */
|
2003-03-08 05:21:02 +00:00
|
|
|
do {
|
|
|
|
char *next_line;
|
2003-03-28 03:53:31 +00:00
|
|
|
sed_cmd_t *sed_cmd;
|
2003-03-28 08:36:52 +00:00
|
|
|
int substituted = 0;
|
2003-04-12 16:10:42 +00:00
|
|
|
/* This enables whole blocks of commands to be mask'ed out if the lead address doesnt match */
|
|
|
|
int block_mask = 1;
|
2003-03-08 05:21:02 +00:00
|
|
|
|
|
|
|
/* Read one line in advance so we can act on the last line, the '$' address */
|
2003-03-19 09:13:01 +00:00
|
|
|
next_line = bb_get_chomped_line_from_file(file);
|
2000-07-10 22:55:51 +00:00
|
|
|
linenum++;
|
2001-06-11 23:50:06 +00:00
|
|
|
altered = 0;
|
2003-03-28 14:11:34 +00:00
|
|
|
force_print = 0;
|
2000-07-10 22:55:51 +00:00
|
|
|
|
|
|
|
/* for every line, go through all the commands */
|
2003-04-11 17:10:23 +00:00
|
|
|
for (sed_cmd = sed_cmd_head.next; sed_cmd; sed_cmd = sed_cmd->next) {
|
2002-06-11 23:43:27 +00:00
|
|
|
int deleted = 0;
|
2000-03-06 19:20:35 +00:00
|
|
|
|
2001-06-11 23:50:06 +00:00
|
|
|
/*
|
|
|
|
* entry point into sedding...
|
|
|
|
*/
|
2002-06-11 23:43:27 +00:00
|
|
|
int matched = (
|
2003-04-11 17:10:23 +00:00
|
|
|
/* no range necessary */
|
|
|
|
(sed_cmd->beg_line == 0 && sed_cmd->end_line == 0
|
|
|
|
&& sed_cmd->beg_match == NULL
|
|
|
|
&& sed_cmd->end_match == NULL) ||
|
|
|
|
/* this line number is the first address we're looking for */
|
2003-04-12 16:10:42 +00:00
|
|
|
(sed_cmd->beg_line > 0 && (sed_cmd->beg_line == linenum)) ||
|
2003-04-11 17:10:23 +00:00
|
|
|
/* this line matches our first address regex */
|
|
|
|
(sed_cmd->beg_match
|
|
|
|
&& (regexec(sed_cmd->beg_match, pattern_space, 0, NULL,
|
|
|
|
0) == 0)) ||
|
|
|
|
/* we are currently within the beginning & ending address range */
|
2003-09-13 06:57:39 +00:00
|
|
|
sed_cmd->still_in_range || ((sed_cmd->beg_line == -1)
|
2003-04-11 17:10:23 +00:00
|
|
|
&& (next_line == NULL))
|
2003-04-08 11:56:11 +00:00
|
|
|
);
|
2003-04-12 16:10:42 +00:00
|
|
|
if (sed_cmd->cmd == '{') {
|
|
|
|
block_mask = block_mask & matched;
|
|
|
|
}
|
|
|
|
// matched &= block_mask;
|
|
|
|
|
|
|
|
if (sed_cmd->invert ^ (matched & block_mask)) {
|
2003-04-08 06:42:45 +00:00
|
|
|
/* Update last used regex incase a blank substitute BRE is found */
|
|
|
|
if (sed_cmd->beg_match) {
|
|
|
|
previous_regex_ptr = sed_cmd->beg_match;
|
|
|
|
}
|
2001-06-11 23:50:06 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* actual sedding
|
|
|
|
*/
|
2001-11-10 10:49:42 +00:00
|
|
|
switch (sed_cmd->cmd) {
|
2003-04-08 11:56:11 +00:00
|
|
|
case '=':
|
|
|
|
printf("%d\n", linenum);
|
|
|
|
break;
|
|
|
|
case 'P':{
|
|
|
|
/* Write the current pattern space upto the first newline */
|
|
|
|
char *tmp = strchr(pattern_space, '\n');
|
|
|
|
|
|
|
|
if (tmp) {
|
|
|
|
*tmp = '\0';
|
2003-09-15 06:28:45 +00:00
|
|
|
puts(pattern_space);
|
|
|
|
*tmp = '\n';
|
|
|
|
break;
|
2003-04-08 11:56:11 +00:00
|
|
|
}
|
2003-09-15 06:28:45 +00:00
|
|
|
/* Fall Through */
|
2003-04-08 11:56:11 +00:00
|
|
|
}
|
|
|
|
case 'p': /* Write the current pattern space to output */
|
|
|
|
puts(pattern_space);
|
|
|
|
break;
|
|
|
|
case 'd':
|
|
|
|
altered++;
|
|
|
|
deleted = 1;
|
2003-09-14 16:28:08 +00:00
|
|
|
force_print = 0;
|
2003-04-08 11:56:11 +00:00
|
|
|
break;
|
|
|
|
|
|
|
|
case 's':
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Some special cases for 's' printing to make it compliant with
|
|
|
|
* GNU sed printing behavior (aka "The -n | s///p Matrix"):
|
|
|
|
*
|
|
|
|
* -n ONLY = never print anything regardless of any successful
|
|
|
|
* substitution
|
|
|
|
*
|
|
|
|
* s///p ONLY = always print successful substitutions, even if
|
|
|
|
* the pattern_space is going to be printed anyway (pattern_space
|
|
|
|
* will be printed twice).
|
|
|
|
*
|
|
|
|
* -n AND s///p = print ONLY a successful substitution ONE TIME;
|
|
|
|
* no other lines are printed - this is the reason why the 'p'
|
|
|
|
* flag exists in the first place.
|
|
|
|
*/
|
2001-06-11 23:50:06 +00:00
|
|
|
|
2003-03-30 03:41:53 +00:00
|
|
|
#ifdef CONFIG_FEATURE_SED_EMBEDED_NEWLINE
|
2003-04-08 11:56:11 +00:00
|
|
|
/* HACK: escape newlines twice so regex can match them */
|
|
|
|
{
|
|
|
|
int offset = 0;
|
2003-09-15 09:22:04 +00:00
|
|
|
char *tmp = strchr(pattern_space + offset, '\n');
|
|
|
|
while ((tmp = strchr(pattern_space + offset, '\n')) != NULL) {
|
|
|
|
offset = tmp - pattern_space;
|
|
|
|
pattern_space = xrealloc(pattern_space, strlen(pattern_space) + 2);
|
|
|
|
tmp = pattern_space + offset;
|
2003-04-08 11:56:11 +00:00
|
|
|
memmove(tmp + 1, tmp, strlen(tmp) + 1);
|
|
|
|
tmp[0] = '\\';
|
|
|
|
tmp[1] = 'n';
|
2003-09-15 09:22:04 +00:00
|
|
|
offset += 2;
|
2003-04-08 11:56:11 +00:00
|
|
|
}
|
|
|
|
}
|
2003-03-30 03:41:53 +00:00
|
|
|
#endif
|
2003-04-08 11:56:11 +00:00
|
|
|
/* we print the pattern_space once, unless we were told to be quiet */
|
2003-09-14 07:59:28 +00:00
|
|
|
substituted |= do_subst_command(sed_cmd, &pattern_space);
|
2003-03-30 03:41:53 +00:00
|
|
|
#ifdef CONFIG_FEATURE_SED_EMBEDED_NEWLINE
|
2003-04-08 11:56:11 +00:00
|
|
|
/* undo HACK: escape newlines twice so regex can match them */
|
|
|
|
{
|
|
|
|
char *tmp = pattern_space;
|
2003-03-30 03:41:53 +00:00
|
|
|
|
2003-04-08 11:56:11 +00:00
|
|
|
while ((tmp = strstr(tmp, "\\n")) != NULL) {
|
|
|
|
memmove(tmp, tmp + 1, strlen(tmp + 1) + 1);
|
|
|
|
tmp[0] = '\n';
|
2003-03-30 03:41:53 +00:00
|
|
|
}
|
2003-04-08 11:56:11 +00:00
|
|
|
}
|
2003-03-30 03:41:53 +00:00
|
|
|
#endif
|
2003-09-14 08:52:53 +00:00
|
|
|
if (!be_quiet && substituted && ((sed_cmd->next == NULL)
|
2003-04-11 17:10:23 +00:00
|
|
|
|| (sed_cmd->next->cmd != 's'))) {
|
2003-04-08 11:56:11 +00:00
|
|
|
force_print = 1;
|
|
|
|
}
|
|
|
|
/* we also print the line if we were given the 'p' flag
|
|
|
|
* (this is quite possibly the second printing) */
|
2003-09-16 01:46:36 +00:00
|
|
|
// if ((sed_cmd->sub_p) && (!altered || substituted)) {
|
|
|
|
if ((sed_cmd->sub_p) && (altered || substituted)) {
|
2003-04-07 12:24:44 +00:00
|
|
|
puts(pattern_space);
|
2003-04-08 11:56:11 +00:00
|
|
|
}
|
|
|
|
break;
|
|
|
|
case 'a':
|
|
|
|
puts(pattern_space);
|
|
|
|
fputs(sed_cmd->editline, stdout);
|
|
|
|
altered++;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case 'i':
|
|
|
|
fputs(sed_cmd->editline, stdout);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case 'c':
|
|
|
|
/* single-address case */
|
|
|
|
if ((sed_cmd->end_match == NULL && sed_cmd->end_line == 0)
|
2001-06-11 23:50:06 +00:00
|
|
|
/* multi-address case */
|
2001-11-10 10:49:42 +00:00
|
|
|
/* - matching text */
|
2003-04-08 11:56:11 +00:00
|
|
|
|| (sed_cmd->end_match
|
2003-04-11 17:10:23 +00:00
|
|
|
&& (regexec(sed_cmd->end_match, pattern_space, 0,
|
|
|
|
NULL, 0) == 0))
|
2001-11-10 10:49:42 +00:00
|
|
|
/* - matching line numbers */
|
2003-04-08 11:56:11 +00:00
|
|
|
|| (sed_cmd->end_line > 0
|
|
|
|
&& sed_cmd->end_line == linenum)) {
|
|
|
|
fputs(sed_cmd->editline, stdout);
|
|
|
|
}
|
|
|
|
altered++;
|
|
|
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
case 'r':{
|
|
|
|
FILE *outfile;
|
2003-04-11 17:10:23 +00:00
|
|
|
|
2003-04-08 11:56:11 +00:00
|
|
|
outfile = fopen(sed_cmd->filename, "r");
|
2003-04-09 15:26:14 +00:00
|
|
|
if (outfile) {
|
2003-04-09 15:52:32 +00:00
|
|
|
char *line;
|
2003-04-11 17:10:23 +00:00
|
|
|
|
|
|
|
while ((line =
|
|
|
|
bb_get_chomped_line_from_file(outfile)) !=
|
|
|
|
NULL) {
|
|
|
|
pattern_space =
|
|
|
|
xrealloc(pattern_space,
|
|
|
|
strlen(line) + strlen(pattern_space) + 2);
|
2003-04-09 15:52:32 +00:00
|
|
|
strcat(pattern_space, "\n");
|
|
|
|
strcat(pattern_space, line);
|
|
|
|
}
|
2003-04-08 11:56:11 +00:00
|
|
|
bb_xprint_and_close_file(outfile);
|
2003-04-09 15:26:14 +00:00
|
|
|
}
|
2003-04-09 15:52:32 +00:00
|
|
|
|
2003-04-08 11:56:11 +00:00
|
|
|
}
|
|
|
|
break;
|
|
|
|
case 'q': /* Branch to end of script and quit */
|
|
|
|
deleted = 1;
|
|
|
|
/* Exit the outer while loop */
|
|
|
|
free(next_line);
|
|
|
|
next_line = NULL;
|
|
|
|
break;
|
|
|
|
case 'n': /* Read next line from input */
|
2003-09-15 06:12:53 +00:00
|
|
|
if (!be_quiet) {
|
|
|
|
puts(pattern_space);
|
|
|
|
}
|
2003-09-14 15:24:18 +00:00
|
|
|
if (next_line) {
|
|
|
|
free(pattern_space);
|
|
|
|
pattern_space = next_line;
|
|
|
|
next_line = bb_get_chomped_line_from_file(file);
|
|
|
|
linenum++;
|
2003-09-15 06:12:53 +00:00
|
|
|
} else {
|
|
|
|
/* Jump to end of script and exist */
|
|
|
|
deleted = 1;
|
|
|
|
free(next_line);
|
|
|
|
next_line = NULL;
|
2003-09-14 15:24:18 +00:00
|
|
|
}
|
2003-04-08 11:56:11 +00:00
|
|
|
break;
|
|
|
|
case 'N': /* Append the next line to the current line */
|
|
|
|
if (next_line) {
|
|
|
|
pattern_space =
|
|
|
|
realloc(pattern_space,
|
2003-04-11 17:10:23 +00:00
|
|
|
strlen(pattern_space) + strlen(next_line) + 2);
|
2003-04-08 11:56:11 +00:00
|
|
|
strcat(pattern_space, "\n");
|
|
|
|
strcat(pattern_space, next_line);
|
2003-03-19 09:13:01 +00:00
|
|
|
next_line = bb_get_chomped_line_from_file(file);
|
2003-03-10 04:12:35 +00:00
|
|
|
linenum++;
|
2003-09-15 05:42:05 +00:00
|
|
|
} else {
|
|
|
|
/* Jump to end of script and exist */
|
|
|
|
deleted = 1;
|
|
|
|
free(next_line);
|
|
|
|
next_line = NULL;
|
2003-04-08 11:56:11 +00:00
|
|
|
}
|
|
|
|
break;
|
|
|
|
case 't':
|
2003-09-14 06:01:14 +00:00
|
|
|
if (substituted)
|
|
|
|
/* Fall through */
|
|
|
|
case 'b':
|
|
|
|
{
|
|
|
|
if (sed_cmd->label == NULL) {
|
|
|
|
/* Jump to end of script */
|
|
|
|
deleted = 1;
|
|
|
|
} else {
|
|
|
|
sed_cmd = branch_to(sed_cmd->label);
|
|
|
|
}
|
2003-09-15 04:55:29 +00:00
|
|
|
/* Reset the substitution flag */
|
|
|
|
substituted = 0;
|
2003-04-08 11:56:11 +00:00
|
|
|
}
|
|
|
|
break;
|
|
|
|
case 'y':{
|
|
|
|
int i;
|
|
|
|
|
|
|
|
for (i = 0; pattern_space[i] != 0; i++) {
|
|
|
|
int j;
|
|
|
|
|
|
|
|
for (j = 0; sed_cmd->translate[j]; j += 2) {
|
|
|
|
if (pattern_space[i] == sed_cmd->translate[j]) {
|
|
|
|
pattern_space[i] = sed_cmd->translate[j + 1];
|
2003-03-30 08:02:18 +00:00
|
|
|
}
|
|
|
|
}
|
2003-04-08 11:56:11 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
case 'g': /* Replace pattern space with hold space */
|
|
|
|
free(pattern_space);
|
2003-09-14 16:28:08 +00:00
|
|
|
if (hold_space) {
|
|
|
|
pattern_space = strdup(hold_space);
|
|
|
|
}
|
2003-04-08 11:56:11 +00:00
|
|
|
break;
|
2003-04-26 07:40:07 +00:00
|
|
|
case 'G': { /* Append newline and hold space to pattern space */
|
2003-09-14 16:28:08 +00:00
|
|
|
int pattern_space_size = 2;
|
|
|
|
int hold_space_size = 0;
|
|
|
|
|
2003-04-26 07:40:07 +00:00
|
|
|
if (pattern_space) {
|
2003-09-14 16:28:08 +00:00
|
|
|
pattern_space_size += strlen(pattern_space);
|
|
|
|
}
|
|
|
|
if (hold_space) {
|
|
|
|
hold_space_size = strlen(hold_space);
|
|
|
|
}
|
|
|
|
pattern_space = xrealloc(pattern_space, pattern_space_size + hold_space_size);
|
|
|
|
if (pattern_space_size == 2) {
|
|
|
|
strcpy(pattern_space, "\n");
|
2003-09-15 12:07:48 +00:00
|
|
|
} else {
|
|
|
|
strcat(pattern_space, "\n");
|
2003-09-14 16:28:08 +00:00
|
|
|
}
|
|
|
|
if (hold_space) {
|
|
|
|
strcat(pattern_space, hold_space);
|
2003-04-26 07:40:07 +00:00
|
|
|
}
|
|
|
|
break;
|
|
|
|
}
|
2003-04-08 11:56:11 +00:00
|
|
|
case 'h': /* Replace hold space with pattern space */
|
|
|
|
free(hold_space);
|
|
|
|
hold_space = strdup(pattern_space);
|
|
|
|
break;
|
2003-04-26 07:40:07 +00:00
|
|
|
case 'H': { /* Append newline and pattern space to hold space */
|
2003-09-14 15:24:18 +00:00
|
|
|
int hold_space_size = 2;
|
|
|
|
int pattern_space_size = 0;
|
|
|
|
|
2003-04-26 07:40:07 +00:00
|
|
|
if (hold_space) {
|
2003-09-14 15:24:18 +00:00
|
|
|
hold_space_size += strlen(hold_space);
|
2003-04-26 07:40:07 +00:00
|
|
|
}
|
2003-09-14 15:24:18 +00:00
|
|
|
if (pattern_space) {
|
|
|
|
pattern_space_size = strlen(pattern_space);
|
|
|
|
}
|
|
|
|
hold_space = xrealloc(hold_space, hold_space_size + pattern_space_size);
|
|
|
|
|
|
|
|
if (hold_space_size == 2) {
|
|
|
|
strcpy(hold_space, "\n");
|
2003-09-14 01:25:31 +00:00
|
|
|
} else {
|
2003-09-14 15:24:18 +00:00
|
|
|
strcat(hold_space, "\n");
|
|
|
|
}
|
|
|
|
if (pattern_space) {
|
|
|
|
strcat(hold_space, pattern_space);
|
2003-09-14 01:25:31 +00:00
|
|
|
}
|
2003-04-26 07:40:07 +00:00
|
|
|
break;
|
|
|
|
}
|
2003-04-08 11:56:11 +00:00
|
|
|
case 'x':{
|
|
|
|
/* Swap hold and pattern space */
|
2003-04-12 16:10:42 +00:00
|
|
|
char *tmp = pattern_space;
|
2003-04-08 11:56:11 +00:00
|
|
|
pattern_space = hold_space;
|
|
|
|
hold_space = tmp;
|
2003-04-12 16:10:42 +00:00
|
|
|
break;
|
2003-04-08 11:56:11 +00:00
|
|
|
}
|
2001-06-11 23:50:06 +00:00
|
|
|
}
|
2002-06-11 23:43:27 +00:00
|
|
|
}
|
2000-03-06 19:20:35 +00:00
|
|
|
|
2002-06-11 23:43:27 +00:00
|
|
|
/*
|
|
|
|
* exit point from sedding...
|
|
|
|
*/
|
|
|
|
if (matched) {
|
2001-06-11 23:50:06 +00:00
|
|
|
if (
|
2003-04-11 17:10:23 +00:00
|
|
|
/* this is a single-address command or... */
|
|
|
|
(sed_cmd->end_line == 0 && sed_cmd->end_match == NULL)
|
|
|
|
/* If only one address */
|
|
|
|
/* we were in the middle of our address range (this
|
|
|
|
* isn't the first time through) and.. */
|
2003-09-13 06:57:39 +00:00
|
|
|
|| ((sed_cmd->still_in_range == 1)
|
2003-04-11 17:10:23 +00:00
|
|
|
/* this line number is the last address we're looking for or... */
|
2003-04-12 16:10:42 +00:00
|
|
|
&& ((sed_cmd->end_line > 0
|
2003-04-11 17:10:23 +00:00
|
|
|
&& (sed_cmd->end_line == linenum))
|
|
|
|
/* this line matches our last address regex */
|
|
|
|
|| (sed_cmd->end_match
|
|
|
|
&& (regexec(sed_cmd->end_match, pattern_space,
|
|
|
|
0, NULL, 0) == 0))))) {
|
2001-06-11 23:50:06 +00:00
|
|
|
/* we're out of our address range */
|
2003-09-13 06:57:39 +00:00
|
|
|
sed_cmd->still_in_range = 0;
|
2003-04-11 17:10:23 +00:00
|
|
|
} else {
|
|
|
|
/* didn't hit the exit? then we're still in the middle of an address range */
|
2003-09-13 06:57:39 +00:00
|
|
|
sed_cmd->still_in_range = 1;
|
2001-06-11 23:50:06 +00:00
|
|
|
}
|
2000-02-08 19:58:47 +00:00
|
|
|
}
|
2002-06-11 23:43:27 +00:00
|
|
|
|
2003-04-12 16:10:42 +00:00
|
|
|
if (sed_cmd->cmd == '}') {
|
|
|
|
block_mask = 1;
|
|
|
|
}
|
|
|
|
|
2002-06-11 23:43:27 +00:00
|
|
|
if (deleted)
|
2003-04-08 11:56:11 +00:00
|
|
|
break;
|
2003-09-14 01:25:31 +00:00
|
|
|
|
2000-07-10 22:55:51 +00:00
|
|
|
}
|
|
|
|
|
2000-11-03 19:47:00 +00:00
|
|
|
/* we will print the line unless we were told to be quiet or if the
|
|
|
|
* line was altered (via a 'd'elete or 's'ubstitution), in which case
|
|
|
|
* the altered line was already printed */
|
2003-09-14 08:52:53 +00:00
|
|
|
if ((!be_quiet && !altered && !substituted) || force_print) {
|
2003-04-07 12:24:44 +00:00
|
|
|
puts(pattern_space);
|
2003-03-28 14:11:34 +00:00
|
|
|
}
|
2003-04-07 12:24:44 +00:00
|
|
|
free(pattern_space);
|
|
|
|
pattern_space = next_line;
|
|
|
|
} while (pattern_space);
|
2000-07-10 22:55:51 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
extern int sed_main(int argc, char **argv)
|
|
|
|
{
|
2001-11-12 16:44:55 +00:00
|
|
|
int opt, status = EXIT_SUCCESS;
|
2000-07-10 22:55:51 +00:00
|
|
|
|
2003-09-14 15:24:18 +00:00
|
|
|
#if 0 /* This doesnt seem to be working */
|
2001-10-24 05:00:29 +00:00
|
|
|
#ifdef CONFIG_FEATURE_CLEAN_UP
|
2000-07-11 21:38:47 +00:00
|
|
|
/* destroy command strings on exit */
|
2000-12-22 01:48:07 +00:00
|
|
|
if (atexit(destroy_cmd_strs) == -1)
|
2003-03-19 09:13:01 +00:00
|
|
|
bb_perror_msg_and_die("atexit");
|
2003-09-14 15:24:18 +00:00
|
|
|
#endif
|
2000-07-12 23:35:21 +00:00
|
|
|
#endif
|
2000-07-11 21:38:47 +00:00
|
|
|
|
2000-07-10 22:55:51 +00:00
|
|
|
/* do normal option parsing */
|
2001-02-17 16:52:35 +00:00
|
|
|
while ((opt = getopt(argc, argv, "ne:f:")) > 0) {
|
2000-07-10 22:55:51 +00:00
|
|
|
switch (opt) {
|
2003-04-08 11:56:11 +00:00
|
|
|
case 'n':
|
|
|
|
be_quiet++;
|
|
|
|
break;
|
|
|
|
case 'e':{
|
2003-09-14 15:24:18 +00:00
|
|
|
add_cmd_str(optarg);
|
2003-04-08 11:56:11 +00:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
case 'f':
|
|
|
|
load_cmd_file(optarg);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
bb_show_usage();
|
2000-07-10 22:55:51 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* 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 */
|
2003-04-09 01:43:54 +00:00
|
|
|
if (sed_cmd_head.next == NULL) {
|
2000-07-10 22:55:51 +00:00
|
|
|
if (argv[optind] == NULL)
|
2003-03-19 09:13:01 +00:00
|
|
|
bb_show_usage();
|
2003-09-14 04:06:12 +00:00
|
|
|
else
|
2003-09-14 15:24:18 +00:00
|
|
|
add_cmd_str(argv[optind++]);
|
2000-07-10 22:55:51 +00:00
|
|
|
}
|
1999-12-29 22:19:46 +00:00
|
|
|
|
2000-07-10 22:55:51 +00:00
|
|
|
/* argv[(optind)..(argc-1)] should be names of file to process. If no
|
|
|
|
* files were specified or '-' was specified, take input from stdin.
|
|
|
|
* Otherwise, we process all the files specified. */
|
2003-09-14 04:06:12 +00:00
|
|
|
if (argv[optind] == NULL) {
|
2000-07-10 22:55:51 +00:00
|
|
|
process_file(stdin);
|
2003-04-08 11:56:11 +00:00
|
|
|
} else {
|
2000-07-10 22:55:51 +00:00
|
|
|
int i;
|
|
|
|
FILE *file;
|
2003-04-08 11:56:11 +00:00
|
|
|
|
2000-07-10 22:55:51 +00:00
|
|
|
for (i = optind; i < argc; i++) {
|
2003-09-14 04:06:12 +00:00
|
|
|
if(!strcmp(argv[i], "-")) {
|
|
|
|
process_file(stdin);
|
|
|
|
} else {
|
|
|
|
file = bb_wfopen(argv[i], "r");
|
|
|
|
if (file) {
|
|
|
|
process_file(file);
|
|
|
|
fclose(file);
|
|
|
|
} else {
|
|
|
|
status = EXIT_FAILURE;
|
|
|
|
}
|
|
|
|
}
|
2000-02-08 19:58:47 +00:00
|
|
|
}
|
1999-11-09 01:47:36 +00:00
|
|
|
}
|
2003-04-08 11:56:11 +00:00
|
|
|
|
2003-09-14 15:24:18 +00:00
|
|
|
#ifdef CONFIG_FEATURE_CLEAN_UP
|
|
|
|
destroy_cmd_strs();
|
|
|
|
#endif
|
2001-11-12 16:44:55 +00:00
|
|
|
return status;
|
2000-07-10 22:55:51 +00:00
|
|
|
}
|