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 "builtin.h"
   6 #include "abspath.h"
   7 #include "environment.h"
   8 #include "gettext.h"
   9 #include "strbuf.h"
  10 #include "mailinfo.h"
  11 #include "parse-options.h"
  12
  13 static const char * const mailinfo_usage[] = {
  14         /* TRANSLATORS: keep <> in "<" mail ">" info. */
  15         N_("git mailinfo [<options>] <msg> <patch> < mail >info"),
  16         NULL,
  17 };
  18
  19 struct metainfo_charset
  20 {
  21         enum {
  22                 CHARSET_DEFAULT,
  23                 CHARSET_NO_REENCODE,
  24                 CHARSET_EXPLICIT,
  25         } policy;
  26         const char *charset;
  27 };
  28
  29 static int parse_opt_explicit_encoding(const struct option *opt,
  30                                        const char *arg, int unset)
  31 {
  32         struct metainfo_charset *meta_charset = opt->value;
  33
  34         BUG_ON_OPT_NEG(unset);
  35
  36         meta_charset->policy = CHARSET_EXPLICIT;
  37         meta_charset->charset = arg;
  38
  39         return 0;
  40 }
  41
  42 static int parse_opt_quoted_cr(const struct option *opt, const char *arg, int unset)
  43 {
  44         BUG_ON_OPT_NEG(unset);
  45
  46         if (mailinfo_parse_quoted_cr_action(arg, opt->value) != 0)
  47                 return error(_("bad action '%s' for '%s'"), arg, "--quoted-cr");
  48         return 0;
  49 }
  50
  51 int cmd_mailinfo(int argc, const char **argv, const char *prefix)
  52 {
  53         struct metainfo_charset meta_charset;
  54         struct mailinfo mi;
  55         int status;
  56         char *msgfile, *patchfile;
  57
  58         struct option options[] = {
  59                 OPT_BOOL('k', NULL, &mi.keep_subject, N_("keep subject")),
  60                 OPT_BOOL('b', NULL, &mi.keep_non_patch_brackets_in_subject,
  61                          N_("keep non patch brackets in subject")),
  62                 OPT_BOOL('m', "message-id", &mi.add_message_id,
  63                          N_("copy Message-ID to the end of commit message")),
  64                 OPT_SET_INT_F('u', NULL, &meta_charset.policy,
  65                               N_("re-code metadata to i18n.commitEncoding"),
  66                               CHARSET_DEFAULT, PARSE_OPT_NONEG),
  67                 OPT_SET_INT_F('n', NULL, &meta_charset.policy,
  68                               N_("disable charset re-coding of metadata"),
  69                               CHARSET_NO_REENCODE, PARSE_OPT_NONEG),
  70                 OPT_CALLBACK_F(0, "encoding", &meta_charset, N_("encoding"),
  71                                N_("re-code metadata to this encoding"),
  72                                PARSE_OPT_NONEG, parse_opt_explicit_encoding),
  73                 OPT_BOOL(0, "scissors", &mi.use_scissors, N_("use scissors")),
  74                 OPT_CALLBACK_F(0, "quoted-cr", &mi.quoted_cr, N_("<action>"),
  75                                N_("action when quoted CR is found"),
  76                                PARSE_OPT_NONEG, parse_opt_quoted_cr),
  77                 OPT_HIDDEN_BOOL(0, "inbody-headers", &mi.use_inbody_headers,
  78                          N_("use headers in message's body")),
  79                 OPT_END()
  80         };
  81
  82         setup_mailinfo(&mi);
  83         meta_charset.policy = CHARSET_DEFAULT;
  84
  85         argc = parse_options(argc, argv, prefix, options, mailinfo_usage, 0);
  86
  87         if (argc != 2)
  88                 usage_with_options(mailinfo_usage, options);
  89
  90         switch (meta_charset.policy) {
  91         case CHARSET_DEFAULT:
  92                 mi.metainfo_charset = get_commit_output_encoding();
  93                 break;
  94         case CHARSET_NO_REENCODE:
  95                 mi.metainfo_charset = NULL;
  96                 break;
  97         case CHARSET_EXPLICIT:
  98                 break;
  99         default:
 100                 BUG("invalid meta_charset.policy");
 101         }
 102
 103         mi.input = stdin;
 104         mi.output = stdout;
 105
 106         msgfile = prefix_filename(prefix, argv[0]);
 107         patchfile = prefix_filename(prefix, argv[1]);
 108
 109         status = !!mailinfo(&mi, msgfile, patchfile);
 110         clear_mailinfo(&mi);
 111
 112         free(msgfile);
 113         free(patchfile);
 114         return status;
 115 }