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 #include "parse-options.h"
  11
  12 static const char * const mailinfo_usage[] = {
  13         /* TRANSLATORS: keep <> in "<" mail ">" info. */
  14         N_("git mailinfo [<options>] <msg> <patch> < mail >info"),
  15         NULL,
  16 };
  17
  18 struct metainfo_charset
  19 {
  20         enum {
  21                 CHARSET_DEFAULT,
  22                 CHARSET_NO_REENCODE,
  23                 CHARSET_EXPLICIT,
  24         } policy;
  25         const char *charset;
  26 };
  27
  28 static int parse_opt_explicit_encoding(const struct option *opt,
  29                                        const char *arg, int unset)
  30 {
  31         struct metainfo_charset *meta_charset = opt->value;
  32
  33         BUG_ON_OPT_NEG(unset);
  34
  35         meta_charset->policy = CHARSET_EXPLICIT;
  36         meta_charset->charset = arg;
  37
  38         return 0;
  39 }
  40
  41 static int parse_opt_quoted_cr(const struct option *opt, const char *arg, int unset)
  42 {
  43         BUG_ON_OPT_NEG(unset);
  44
  45         if (mailinfo_parse_quoted_cr_action(arg, opt->value) != 0)
  46                 return error(_("bad action '%s' for '%s'"), arg, "--quoted-cr");
  47         return 0;
  48 }
  49
  50 int cmd_mailinfo(int argc, const char **argv, const char *prefix)
  51 {
  52         struct metainfo_charset meta_charset;
  53         struct mailinfo mi;
  54         int status;
  55         char *msgfile, *patchfile;
  56
  57         struct option options[] = {
  58                 OPT_BOOL('k', NULL, &mi.keep_subject, N_("keep subject")),
  59                 OPT_BOOL('b', NULL, &mi.keep_non_patch_brackets_in_subject,
  60                          N_("keep non patch brackets in subject")),
  61                 OPT_BOOL('m', "message-id", &mi.add_message_id,
  62                          N_("copy Message-ID to the end of commit message")),
  63                 OPT_SET_INT_F('u', NULL, &meta_charset.policy,
  64                               N_("re-code metadata to i18n.commitEncoding"),
  65                               CHARSET_DEFAULT, PARSE_OPT_NONEG),
  66                 OPT_SET_INT_F('n', NULL, &meta_charset.policy,
  67                               N_("disable charset re-coding of metadata"),
  68                               CHARSET_NO_REENCODE, PARSE_OPT_NONEG),
  69                 OPT_CALLBACK_F(0, "encoding", &meta_charset, N_("encoding"),
  70                                N_("re-code metadata to this encoding"),
  71                                PARSE_OPT_NONEG, parse_opt_explicit_encoding),
  72                 OPT_BOOL(0, "scissors", &mi.use_scissors, N_("use scissors")),
  73                 OPT_CALLBACK_F(0, "quoted-cr", &mi.quoted_cr, N_("<action>"),
  74                                N_("action when quoted CR is found"),
  75                                PARSE_OPT_NONEG, parse_opt_quoted_cr),
  76                 OPT_HIDDEN_BOOL(0, "inbody-headers", &mi.use_inbody_headers,
  77                          N_("use headers in message's body")),
  78                 OPT_END()
  79         };
  80
  81         setup_mailinfo(&mi);
  82         meta_charset.policy = CHARSET_DEFAULT;
  83
  84         argc = parse_options(argc, argv, prefix, options, mailinfo_usage, 0);
  85
  86         if (argc != 2)
  87                 usage_with_options(mailinfo_usage, options);
  88
  89         switch (meta_charset.policy) {
  90         case CHARSET_DEFAULT:
  91                 mi.metainfo_charset = get_commit_output_encoding();
  92                 break;
  93         case CHARSET_NO_REENCODE:
  94                 mi.metainfo_charset = NULL;
  95                 break;
  96         case CHARSET_EXPLICIT:
  97                 break;
  98         default:
  99                 BUG("invalid meta_charset.policy");
 100         }
 101
 102         mi.input = stdin;
 103         mi.output = stdout;
 104
 105         msgfile = prefix_filename(prefix, argv[0]);
 106         patchfile = prefix_filename(prefix, argv[1]);
 107
 108         status = !!mailinfo(&mi, msgfile, patchfile);
 109         clear_mailinfo(&mi);
 110
 111         free(msgfile);
 112         free(patchfile);
 113         return status;
 114 }