From 2b26fd5570ebd6efb395aac4773051a5f3ed4dcd Mon Sep 17 00:00:00 2001
From: Rob Landley <rob@landley.net>
Date: Fri, 24 Feb 2006 02:30:39 +0000
Subject: A few changes falling out from the effort to make sed handle embedded
NUL bytes. Checking in to reduce the diff between my tree and svn...
---
editors/sed.c | 44 ++++++++++++++++++++++++++------------------
1 file changed, 26 insertions(+), 18 deletions(-)
(limited to 'editors')
diff --git a/editors/sed.c b/editors/sed.c
index dcc2ca06b..b08eae4dc 100644
--- a/editors/sed.c
+++ b/editors/sed.c
@@ -8,6 +8,8 @@
* Copyright (C) 2003 by Glenn McGrath <bug1@iinet.net.au>
* Copyright (C) 2003,2004 by Rob Landley <rob@landley.net>
*
+ * MAINTAINER: Rob Landley <rob@landley.net>
+ *
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
@@ -74,8 +76,8 @@ typedef struct sed_cmd_s {
regex_t *sub_match; /* For 's/sub_match/string/' */
int beg_line; /* 'sed 1p' 0 == apply commands to all lines */
int end_line; /* 'sed 1,3p' 0 == one line only. -1 = last line ($) */
-
- FILE *file; /* File (sr) command writes to, -1 for none. */
+
+ FILE *file; /* File (sw) command writes to, -1 for none. */
char *string; /* Data string for (saicytb) commands. */
unsigned short which_match; /* (s) Which match to replace (0 for all) */
@@ -83,7 +85,7 @@ typedef struct sed_cmd_s {
/* Bitfields (gcc won't group them if we don't) */
unsigned int invert:1; /* the '!' after the address */
unsigned int in_match:1; /* Next line also included in match? */
- unsigned int no_newline:1; /* Last line written by (sr) had no '\n' */
+ unsigned int no_newline:1; /* Last line written by (sw) had no '\n' */
unsigned int sub_p:1; /* (s) print option */
@@ -120,6 +122,7 @@ struct append_list {
};
static struct append_list *append_head=NULL, *append_tail=NULL;
+void free_and_close_stuff(void);
#ifdef CONFIG_FEATURE_CLEAN_UP
static void free_and_close_stuff(void)
{
@@ -729,13 +732,13 @@ static char *get_next_line(int *no_newline)
int len;
flush_append();
- while(current_input_file<input_file_count) {
- temp=bb_get_line_from_file(input_file_list[current_input_file]);
- if(temp) {
- len=strlen(temp);
- *no_newline=!(len && temp[len-1]=='\n');
- if(!*no_newline) temp[len-1]=0;
+ while (current_input_file<input_file_count) {
+ temp = bb_get_chunk_from_file(input_file_list[current_input_file],&len);
+ if (temp) {
+ *no_newline = !(len && temp[len-1]=='\n');
+ if (!*no_newline) temp[len-1] = 0;
break;
+ // Close this file and advance to next one
} else fclose(input_file_list[current_input_file++]);
}
@@ -762,12 +765,15 @@ static int puts_maybe_newline(char *s, FILE *file, int missing_newline, int no_n
#define sed_puts(s,n) missing_newline=puts_maybe_newline(s,nonstdout,missing_newline,n)
+/* Process all the lines in all the files */
+
static void process_files(void)
{
char *pattern_space, *next_line;
int linenum = 0, missing_newline=0;
int no_newline,next_no_newline=0;
+ /* Prime the pump */
next_line = get_next_line(&next_no_newline);
/* go through every line in each file */
@@ -779,7 +785,8 @@ static void process_files(void)
if(!(pattern_space=next_line)) break;
no_newline=next_no_newline;
- /* Read one line in advance so we can act on the last line, the '$' address */
+ /* Read one line in advance so we can act on the last line,
+ * the '$' address */
next_line = get_next_line(&next_no_newline);
linenum++;
restart:
@@ -921,16 +928,16 @@ restart:
/* Read file, append contents to output */
case 'r':
{
- FILE *outfile;
+ FILE *rfile;
- outfile = fopen(sed_cmd->string, "r");
- if (outfile) {
+ rfile = fopen(sed_cmd->string, "r");
+ if (rfile) {
char *line;
- while ((line = bb_get_chomped_line_from_file(outfile))
+ while ((line = bb_get_chomped_line_from_file(rfile))
!= NULL)
append(line);
- bb_xprint_and_close_file(outfile);
+ bb_xprint_and_close_file(rfile);
}
break;
@@ -1107,11 +1114,9 @@ extern int sed_main(int argc, char **argv)
{
int status = EXIT_SUCCESS, opt, getpat = 1;
-#ifdef CONFIG_FEATURE_CLEAN_UP
/* destroy command strings on exit */
- if (atexit(free_and_close_stuff) == -1)
+ if (ENABLE_FEATURE_CLEAN_UP && atexit(free_and_close_stuff) == -1)
bb_perror_msg_and_die("atexit");
-#endif
/* Lie to autoconf when it starts asking stupid questions. */
if(argc==2 && !strcmp(argv[1],"--version")) {
@@ -1197,12 +1202,15 @@ extern int sed_main(int argc, char **argv)
if(-1==(nonstdoutfd=mkstemp(outname)))
bb_error_msg_and_die("no temp file");
nonstdout=fdopen(nonstdoutfd,"w");
+
/* Set permissions of output file */
+
fstat(fileno(file),&statbuf);
fchmod(nonstdoutfd,statbuf.st_mode);
add_input_file(file);
process_files();
fclose(nonstdout);
+
nonstdout=stdout;
unlink(argv[i]);
rename(outname,argv[i]);
--
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