2 * wiggle - apply rejected patches
4 * Copyright (C) 2003 Neil Brown <neilb@cse.unsw.edu.au>
5 * Copyright (C) 2013 Neil Brown <neilb@suse.de>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program.
22 * Email: <neilb@suse.de>
28 * Files are read in whole and stored in a
29 * struct stream {char*, len}
32 * loading the file "-" reads from stdin which might require
33 * reading into several buffers
37 #include <sys/types.h>
43 static void join_streams(struct stream list[], int cnt)
45 /* join all the streams in the list (upto body=NULL)
46 * into one by re-allocing list[0].body and copying
52 for (i = 0; i < cnt ; i++)
55 c = realloc(list[0].body, len+1);
57 die("memory allocation");
62 for (i = 1; i < cnt; i++) {
63 memcpy(c, list[i].body, list[i].len);
71 static struct stream load_regular(int fd)
78 s.body = xmalloc(s.len+1);
79 if (read(fd, s.body, s.len) != s.len)
86 static struct stream load_other(int fd)
89 struct stream list[10];
93 list[i].body = xmalloc(8192);
94 list[i].len = read(fd, list[i].body, 8192);
101 join_streams(list, i);
105 join_streams(list, i);
109 struct stream load_segment(FILE *f,
110 unsigned int start, unsigned int end)
114 s.body = xmalloc(s.len+1);
116 if (fread(s.body, 1, s.len, f) != (size_t)s.len)
118 /* ensure string is 'nul' terminated - for sscanf */
123 struct stream load_file(char *name)
133 if (sscanf(name, "_wiggle_:%d:%d:%n", &start, &end,
134 &prefix_len) >= 2 && prefix_len > 0) {
135 FILE *f = fopen(name + prefix_len, "r");
137 s = load_segment(f, start, end);
144 if (strcmp(name, "-") == 0)
147 fd = open(name, O_RDONLY);
152 if (fstat(fd, &stb) == 0) {
154 if (S_ISREG(stb.st_mode))
155 s = load_regular(fd);