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