/* vi: set sw=4 ts=4: */
/*
* busybox patch applet to handle the unified diff format.
- * Copyright (C) 2003 Glenn McGrath <bug1@optushome.com.au>
- *
- * 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.
- *
+ * Copyright (C) 2003 Glenn McGrath <bug1@iinet.net.au>
*
+ * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
*
* This applet is written to work with patches generated by GNU diff,
* where there is equivalent functionality busybox patch shall behave
*
* Issues
* - Non-interactive
- * - Patches must apply cleanly or the hunk will fail.
+ * - Patches must apply cleanly or patch (not just one hunk) will fail.
* - Reject file isnt saved
- * -
*/
#include <getopt.h>
#include <stdlib.h>
#include <unistd.h>
#include "busybox.h"
-#include "libbb.h"
-static int copy_lines(FILE *src_stream, FILE *dest_stream, const unsigned int lines_count)
+static unsigned int copy_lines(FILE *src_stream, FILE *dest_stream, const unsigned int lines_count)
{
- int i = 0;
+ unsigned int i = 0;
while (src_stream && (i < lines_count)) {
char *line;
- line = bb_get_line_from_file(src_stream);
+ line = xmalloc_fgets(src_stream);
if (line == NULL) {
break;
}
if (fputs(line, dest_stream) == EOF) {
- bb_perror_msg_and_die("Error writing to new file");
+ bb_perror_msg_and_die("error writing to new file");
}
free(line);
-
+
i++;
}
- return(i);
+ return i;
}
/* If patch_level is -1 it will remove all directory names
* returns malloc'ed filename
*/
-static unsigned char *extract_filename(char *line, unsigned short patch_level)
+static char *extract_filename(char *line, int patch_level)
{
- char *filename_start_ptr = line + 4;
+ char *temp, *filename_start_ptr = line + 4;
int i;
/* Terminate string at end of source filename */
- {
- char *line_ptr;
- line_ptr = strchr(filename_start_ptr, '\t');
- if (!line_ptr) {
- bb_perror_msg("Malformed line %s", line);
- return(NULL);
- }
- *line_ptr = '\0';
- }
+ temp = strchr(filename_start_ptr, '\t');
+ if (temp) *temp = 0;
- /* Skip over (patch_level) number of leading directories */
+ /* skip over (patch_level) number of leading directories */
for (i = 0; i < patch_level; i++) {
- char *dirname_ptr;
-
- dirname_ptr = strchr(filename_start_ptr, '/');
- if (!dirname_ptr) {
+ temp = strchr(filename_start_ptr, '/');
+ if (!temp)
break;
- }
- filename_start_ptr = dirname_ptr + 1;
+ filename_start_ptr = temp + 1;
}
- return(bb_xstrdup(filename_start_ptr));
+ return xstrdup(filename_start_ptr);
}
static int file_doesnt_exist(const char *filename)
{
struct stat statbuf;
- return(stat(filename, &statbuf));
+ return stat(filename, &statbuf);
}
-extern int patch_main(int argc, char **argv)
+int patch_main(int argc, char **argv);
+int patch_main(int argc, char **argv)
{
- unsigned int patch_level = -1;
+ int patch_level = -1;
char *patch_line;
- int ret = 0;
+ int ret;
+ FILE *patch_file = NULL;
- /* Handle 'p' option */
- if (argv[1] && (argv[1][0] == '-') && (argv[1][1] == 'p')) {
- patch_level = atoi(&argv[1][2]);
+ {
+ char *p, *i;
+ ret = getopt32(argc, argv, "p:i:", &p, &i);
+ if (ret & 1)
+ patch_level = xatol_range(p, -1, USHRT_MAX);
+ if (ret & 2) {
+ patch_file = xfopen(i, "r");
+ } else {
+ patch_file = stdin;
+ }
+ ret = 0;
}
- patch_line = bb_get_line_from_file(stdin);
+ patch_line = xmalloc_fgets(patch_file);
while (patch_line) {
FILE *src_stream;
FILE *dst_stream;
*/
while (patch_line && strncmp(patch_line, "--- ", 4) != 0) {
free(patch_line);
- patch_line = bb_get_line_from_file(stdin);
+ patch_line = xmalloc_fgets(patch_file);
}
+ /* FIXME: patch_line NULL check?? */
/* Extract the filename used before the patch was generated */
original_filename = extract_filename(patch_line, patch_level);
free(patch_line);
- patch_line = bb_get_line_from_file(stdin);
+ patch_line = xmalloc_fgets(patch_file);
+ /* FIXME: NULL check?? */
if (strncmp(patch_line, "+++ ", 4) != 0) {
ret = 2;
- bb_error_msg("Invalid patch");
+ bb_error_msg("invalid patch");
continue;
}
new_filename = extract_filename(patch_line, patch_level);
bb_make_directory(new_filename, -1, FILEUTILS_RECUR);
*line_ptr = '/';
}
- dst_stream = bb_xfopen(new_filename, "w+");
+ dst_stream = xfopen(new_filename, "w+");
backup_filename = NULL;
} else {
backup_filename = xmalloc(strlen(new_filename) + 6);
strcpy(backup_filename, new_filename);
strcat(backup_filename, ".orig");
if (rename(new_filename, backup_filename) == -1) {
- bb_perror_msg_and_die("Couldnt create file %s", backup_filename);
+ bb_perror_msg_and_die("cannot create file %s",
+ backup_filename);
}
- dst_stream = bb_xfopen(new_filename, "w");
+ dst_stream = xfopen(new_filename, "w");
}
if ((backup_filename == NULL) || file_doesnt_exist(original_filename)) {
src_stream = NULL;
} else {
if (strcmp(original_filename, new_filename) == 0) {
- src_stream = bb_xfopen(backup_filename, "r");
+ src_stream = xfopen(backup_filename, "r");
} else {
- src_stream = bb_xfopen(original_filename, "r");
+ src_stream = xfopen(original_filename, "r");
}
}
printf("patching file %s\n", new_filename);
/* Handle each hunk */
- patch_line = bb_get_line_from_file(stdin);
+ patch_line = xmalloc_fgets(patch_file);
while (patch_line) {
unsigned int count;
unsigned int src_beg_line;
/* src_beg_line will be 0 if its a new file */
count = src_beg_line - src_cur_line;
if (copy_lines(src_stream, dst_stream, count) != count) {
- bb_error_msg_and_die("Bad src file");
+ bb_error_msg_and_die("bad src file");
}
src_cur_line += count;
dest_cur_line += count;
}
hunk_offset_start = src_cur_line;
- while ((patch_line = bb_get_line_from_file(stdin)) != NULL) {
+ while ((patch_line = xmalloc_fgets(patch_file)) != NULL) {
if ((*patch_line == '-') || (*patch_line == ' ')) {
char *src_line = NULL;
if (src_stream) {
- src_line = bb_get_line_from_file(src_stream);
+ src_line = xmalloc_fgets(src_stream);
if (!src_line) {
hunk_error++;
break;
src_cur_line++;
}
if (strcmp(src_line, patch_line + 1) != 0) {
- bb_error_msg("Hunk #%d FAILED at %d.", hunk_count, hunk_offset_start);
+ bb_error_msg("hunk #%d FAILED at %d", hunk_count, hunk_offset_start);
hunk_error++;
free(patch_line);
+ /* Probably need to find next hunk, etc... */
+ /* but for now we just bail out */
+ patch_line = NULL;
break;
}
free(src_line);
}
if ((dest_cur_line == 0) || (dest_beg_line == 0)) {
/* The new patched file is empty, remove it */
- if (unlink(new_filename) == -1) {
- bb_perror_msg_and_die("Couldnt remove file %s", new_filename);
- }
- if (unlink(original_filename) == -1) {
- bb_perror_msg_and_die("Couldnt remove original file %s", new_filename);
- }
+ xunlink(new_filename);
+ if (strcmp(new_filename, original_filename) != 0)
+ xunlink(original_filename);
}
}
}
- /* 0 = SUCCESS
+ /* 0 = SUCCESS
* 1 = Some hunks failed
* 2 = More serious problems
*/
- return(ret);
+ return ret;
}
projects / oweals / busybox.git / blobdiff