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 "abspath.h"
   7 #include "builtin.h"
   8 #include "environment.h"
   9 #include "gettext.h"
  10 #include "utf8.h"
  11 #include "strbuf.h"
  12 #include "mailinfo.h"
  13 #include "parse-options.h"
  14
  15 static const char * const mailinfo_usage[] = {
  16         /* TRANSLATORS: keep <> in "<" mail ">" info. */
  17         N_("git mailinfo [<options>] <msg> <patch> < mail >info"),
  18         NULL,
  19 };
  20
  21 struct metainfo_charset
  22 {
  23         enum {
  24                 CHARSET_DEFAULT,
  25                 CHARSET_NO_REENCODE,
  26                 CHARSET_EXPLICIT,
  27         } policy;
  28         const char *charset;
  29 };
  30
  31 static int parse_opt_explicit_encoding(const struct option *opt,
  32                                        const char *arg, int unset)
  33 {
  34         struct metainfo_charset *meta_charset = opt->value;
  35
  36         BUG_ON_OPT_NEG(unset);
  37
  38         meta_charset->policy = CHARSET_EXPLICIT;
  39         meta_charset->charset = arg;
  40
  41         return 0;
  42 }
  43
  44 static int parse_opt_quoted_cr(const struct option *opt, const char *arg, int unset)
  45 {
  46         BUG_ON_OPT_NEG(unset);
  47
  48         if (mailinfo_parse_quoted_cr_action(arg, opt->value) != 0)
  49                 return error(_("bad action '%s' for '%s'"), arg, "--quoted-cr");
  50         return 0;
  51 }
  52
  53 int cmd_mailinfo(int argc, const char **argv, const char *prefix)
  54 {
  55         struct metainfo_charset meta_charset;
  56         struct mailinfo mi;
  57         int status;
  58         char *msgfile, *patchfile;
  59
  60         struct option options[] = {
  61                 OPT_BOOL('k', NULL, &mi.keep_subject, N_("keep subject")),
  62                 OPT_BOOL('b', NULL, &mi.keep_non_patch_brackets_in_subject,
  63                          N_("keep non patch brackets in subject")),
  64                 OPT_BOOL('m', "message-id", &mi.add_message_id,
  65                          N_("copy Message-ID to the end of commit message")),
  66                 OPT_SET_INT_F('u', NULL, &meta_charset.policy,
  67                               N_("re-code metadata to i18n.commitEncoding"),
  68                               CHARSET_DEFAULT, PARSE_OPT_NONEG),
  69                 OPT_SET_INT_F('n', NULL, &meta_charset.policy,
  70                               N_("disable charset re-coding of metadata"),
  71                               CHARSET_NO_REENCODE, PARSE_OPT_NONEG),
  72                 OPT_CALLBACK_F(0, "encoding", &meta_charset, N_("encoding"),
  73                                N_("re-code metadata to this encoding"),
  74                                PARSE_OPT_NONEG, parse_opt_explicit_encoding),
  75                 OPT_BOOL(0, "scissors", &mi.use_scissors, N_("use scissors")),
  76                 OPT_CALLBACK_F(0, "quoted-cr", &mi.quoted_cr, N_("<action>"),
  77                                N_("action when quoted CR is found"),
  78                                PARSE_OPT_NONEG, parse_opt_quoted_cr),
  79                 OPT_HIDDEN_BOOL(0, "inbody-headers", &mi.use_inbody_headers,
  80                          N_("use headers in message's body")),
  81                 OPT_END()
  82         };
  83
  84         setup_mailinfo(&mi);
  85         meta_charset.policy = CHARSET_DEFAULT;
  86
  87         argc = parse_options(argc, argv, prefix, options, mailinfo_usage, 0);
  88
  89         if (argc != 2)
  90                 usage_with_options(mailinfo_usage, options);
  91
  92         switch (meta_charset.policy) {
  93         case CHARSET_DEFAULT:
  94                 mi.metainfo_charset = get_commit_output_encoding();
  95                 break;
  96         case CHARSET_NO_REENCODE:
  97                 mi.metainfo_charset = NULL;
  98                 break;
  99         case CHARSET_EXPLICIT:
 100                 break;
 101         default:
 102                 BUG("invalid meta_charset.policy");
 103         }
 104
 105         mi.input = stdin;
 106         mi.output = stdout;
 107
 108         msgfile = prefix_filename(prefix, argv[0]);
 109         patchfile = prefix_filename(prefix, argv[1]);
 110
 111         status = !!mailinfo(&mi, msgfile, patchfile);
 112         clear_mailinfo(&mi);
 113
 114         free(msgfile);
 115         free(patchfile);
 116         return status;
 117 }