builtin/fmt-merge-msg.c

   1 #include "builtin.h"
   2 #include "config.h"
   3 #include "fmt-merge-msg.h"
   4 #include "gettext.h"
   5 #include "parse-options.h"
   6
   7 static const char * const fmt_merge_msg_usage[] = {
   8         N_("git fmt-merge-msg [-m <message>] [--log[=<n>] | --no-log] [--file <file>]"),
   9         NULL
  10 };
  11
  12 int cmd_fmt_merge_msg(int argc, const char **argv, const char *prefix)
  13 {
  14         const char *inpath = NULL;
  15         const char *message = NULL;
  16         char *into_name = NULL;
  17         int shortlog_len = -1;
  18         struct option options[] = {
  19                 { OPTION_INTEGER, 0, "log", &shortlog_len, N_("n"),
  20                   N_("populate log with at most <n> entries from shortlog"),
  21                   PARSE_OPT_OPTARG, NULL, DEFAULT_MERGE_LOG_LEN },
  22                 { OPTION_INTEGER, 0, "summary", &shortlog_len, N_("n"),
  23                   N_("alias for --log (deprecated)"),
  24                   PARSE_OPT_OPTARG | PARSE_OPT_HIDDEN, NULL,
  25                   DEFAULT_MERGE_LOG_LEN },
  26                 OPT_STRING('m', "message", &message, N_("text"),
  27                         N_("use <text> as start of message")),
  28                 OPT_STRING(0, "into-name", &into_name, N_("name"),
  29                            N_("use <name> instead of the real target branch")),
  30                 OPT_FILENAME('F', "file", &inpath, N_("file to read from")),
  31                 OPT_END()
  32         };
  33
  34         FILE *in = stdin;
  35         struct strbuf input = STRBUF_INIT, output = STRBUF_INIT;
  36         int ret;
  37         struct fmt_merge_msg_opts opts;
  38
  39         git_config(fmt_merge_msg_config, NULL);
  40         argc = parse_options(argc, argv, prefix, options, fmt_merge_msg_usage,
  41                              0);
  42         if (argc > 0)
  43                 usage_with_options(fmt_merge_msg_usage, options);
  44         if (shortlog_len < 0)
  45                 shortlog_len = (merge_log_config > 0) ? merge_log_config : 0;
  46
  47         if (inpath && strcmp(inpath, "-")) {
  48                 in = fopen(inpath, "r");
  49                 if (!in)
  50                         die_errno("cannot open '%s'", inpath);
  51         }
  52
  53         if (strbuf_read(&input, fileno(in), 0) < 0)
  54                 die_errno("could not read input file");
  55
  56         if (message)
  57                 strbuf_addstr(&output, message);
  58
  59         memset(&opts, 0, sizeof(opts));
  60         opts.add_title = !message;
  61         opts.credit_people = 1;
  62         opts.shortlog_len = shortlog_len;
  63         opts.into_name = into_name;
  64
  65         ret = fmt_merge_msg(&input, &output, &opts);
  66         if (ret)
  67                 return ret;
  68         write_in_full(STDOUT_FILENO, output.buf, output.len);
  69         return 0;
  70 }