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[thirdparty/git.git] / builtin / fmt-merge-msg.c
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25f38f06 1#include "builtin.h"
b2141fc1 2#include "config.h"
898eacd8 3#include "fmt-merge-msg.h"
ce6521e4 4#include "parse-options.h"
00449f99 5
c8ef0383 6static const char * const fmt_merge_msg_usage[] = {
9c9b4f2f 7 N_("git fmt-merge-msg [-m <message>] [--log[=<n>] | --no-log] [--file <file>]"),
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8 NULL
9};
00449f99 10
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11int cmd_fmt_merge_msg(int argc, const char **argv, const char *prefix)
12{
c8ef0383 13 const char *inpath = NULL;
2102440c 14 const char *message = NULL;
898eacd8 15 int shortlog_len = -1;
c8ef0383 16 struct option options[] = {
93eced6c
NTND
17 { OPTION_INTEGER, 0, "log", &shortlog_len, N_("n"),
18 N_("populate log with at most <n> entries from shortlog"),
96e9420c 19 PARSE_OPT_OPTARG, NULL, DEFAULT_MERGE_LOG_LEN },
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20 { OPTION_INTEGER, 0, "summary", &shortlog_len, N_("n"),
21 N_("alias for --log (deprecated)"),
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22 PARSE_OPT_OPTARG | PARSE_OPT_HIDDEN, NULL,
23 DEFAULT_MERGE_LOG_LEN },
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24 OPT_STRING('m', "message", &message, N_("text"),
25 N_("use <text> as start of message")),
26 OPT_FILENAME('F', "file", &inpath, N_("file to read from")),
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27 OPT_END()
28 };
29
0b9a969e 30 FILE *in = stdin;
f285a2d7 31 struct strbuf input = STRBUF_INIT, output = STRBUF_INIT;
0b9a969e 32 int ret;
cbda121c 33 struct fmt_merge_msg_opts opts;
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34
35 git_config(fmt_merge_msg_config, NULL);
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36 argc = parse_options(argc, argv, prefix, options, fmt_merge_msg_usage,
37 0);
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38 if (argc > 0)
39 usage_with_options(fmt_merge_msg_usage, options);
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40 if (shortlog_len < 0)
41 shortlog_len = (merge_log_config > 0) ? merge_log_config : 0;
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42
43 if (inpath && strcmp(inpath, "-")) {
44 in = fopen(inpath, "r");
45 if (!in)
0721c314 46 die_errno("cannot open '%s'", inpath);
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47 }
48
0b9a969e 49 if (strbuf_read(&input, fileno(in), 0) < 0)
d824cbba 50 die_errno("could not read input file");
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51
52 if (message)
2102440c 53 strbuf_addstr(&output, message);
1876166a 54
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JH
55 memset(&opts, 0, sizeof(opts));
56 opts.add_title = !message;
9bcbb1c2 57 opts.credit_people = 1;
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58 opts.shortlog_len = shortlog_len;
59
60 ret = fmt_merge_msg(&input, &output, &opts);
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61 if (ret)
62 return ret;
c8ef0383 63 write_in_full(STDOUT_FILENO, output.buf, output.len);
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64 return 0;
65}