t5510: use `main` as initial branch name
[git] / builtin / stripspace.c
1 #include "builtin.h"
2 #include "cache.h"
3 #include "config.h"
4 #include "parse-options.h"
5 #include "strbuf.h"
6
7 static void comment_lines(struct strbuf *buf)
8 {
9         char *msg;
10         size_t len;
11
12         msg = strbuf_detach(buf, &len);
13         strbuf_add_commented_lines(buf, msg, len);
14         free(msg);
15 }
16
17 static const char * const stripspace_usage[] = {
18         N_("git stripspace [-s | --strip-comments]"),
19         N_("git stripspace [-c | --comment-lines]"),
20         NULL
21 };
22
23 enum stripspace_mode {
24         STRIP_DEFAULT = 0,
25         STRIP_COMMENTS,
26         COMMENT_LINES
27 };
28
29 int cmd_stripspace(int argc, const char **argv, const char *prefix)
30 {
31         struct strbuf buf = STRBUF_INIT;
32         enum stripspace_mode mode = STRIP_DEFAULT;
33         int nongit;
34
35         const struct option options[] = {
36                 OPT_CMDMODE('s', "strip-comments", &mode,
37                             N_("skip and remove all lines starting with comment character"),
38                             STRIP_COMMENTS),
39                 OPT_CMDMODE('c', "comment-lines", &mode,
40                             N_("prepend comment character and space to each line"),
41                             COMMENT_LINES),
42                 OPT_END()
43         };
44
45         argc = parse_options(argc, argv, prefix, options, stripspace_usage, 0);
46         if (argc)
47                 usage_with_options(stripspace_usage, options);
48
49         if (mode == STRIP_COMMENTS || mode == COMMENT_LINES) {
50                 setup_git_directory_gently(&nongit);
51                 git_config(git_default_config, NULL);
52         }
53
54         if (strbuf_read(&buf, 0, 1024) < 0)
55                 die_errno("could not read the input");
56
57         if (mode == STRIP_DEFAULT || mode == STRIP_COMMENTS)
58                 strbuf_stripspace(&buf, mode == STRIP_COMMENTS);
59         else
60                 comment_lines(&buf);
61
62         write_or_die(1, buf.buf, buf.len);
63         strbuf_release(&buf);
64         return 0;
65 }