builtin/mailinfo.c

   1 /*
   2  * Another stupid program, this one parsing the headers of an
   3  * email to figure out authorship and subject
   4  */
   5 #include "cache.h"
   6 #include "builtin.h"
   7 #include "utf8.h"
   8 #include "strbuf.h"
   9 #include "mailinfo.h"
  10
  11 static const char mailinfo_usage[] =
  12         "git mailinfo [-k | -b] [-m | --message-id] [-u | --encoding=<encoding> | -n] [--scissors | --no-scissors] <msg> <patch> < mail >info";
  13
  14 static char *prefix_copy(const char *prefix, const char *filename)
  15 {
  16         if (!prefix || is_absolute_path(filename))
  17                 return xstrdup(filename);
  18         return xstrdup(prefix_filename(prefix, strlen(prefix), filename));
  19 }
  20
  21 int cmd_mailinfo(int argc, const char **argv, const char *prefix)
  22 {
  23         const char *def_charset;
  24         struct mailinfo mi;
  25         int status;
  26         char *msgfile, *patchfile;
  27
  28         setup_mailinfo(&mi);
  29
  30         def_charset = get_commit_output_encoding();
  31         mi.metainfo_charset = def_charset;
  32
  33         while (1 < argc && argv[1][0] == '-') {
  34                 if (!strcmp(argv[1], "-k"))
  35                         mi.keep_subject = 1;
  36                 else if (!strcmp(argv[1], "-b"))
  37                         mi.keep_non_patch_brackets_in_subject = 1;
  38                 else if (!strcmp(argv[1], "-m") || !strcmp(argv[1], "--message-id"))
  39                         mi.add_message_id = 1;
  40                 else if (!strcmp(argv[1], "-u"))
  41                         mi.metainfo_charset = def_charset;
  42                 else if (!strcmp(argv[1], "-n"))
  43                         mi.metainfo_charset = NULL;
  44                 else if (starts_with(argv[1], "--encoding="))
  45                         mi.metainfo_charset = argv[1] + 11;
  46                 else if (!strcmp(argv[1], "--scissors"))
  47                         mi.use_scissors = 1;
  48                 else if (!strcmp(argv[1], "--no-scissors"))
  49                         mi.use_scissors = 0;
  50                 else if (!strcmp(argv[1], "--no-inbody-headers"))
  51                         mi.use_inbody_headers = 0;
  52                 else
  53                         usage(mailinfo_usage);
  54                 argc--; argv++;
  55         }
  56
  57         if (argc != 3)
  58                 usage(mailinfo_usage);
  59
  60         mi.input = stdin;
  61         mi.output = stdout;
  62
  63         msgfile = prefix_copy(prefix, argv[1]);
  64         patchfile = prefix_copy(prefix, argv[2]);
  65
  66         status = !!mailinfo(&mi, msgfile, patchfile);
  67         clear_mailinfo(&mi);
  68
  69         free(msgfile);
  70         free(patchfile);
  71         return status;
  72 }