Andrew's git - gitweb.git/blob - builtin/interpret-trailers.c

   1/*
   2 * Builtin "git interpret-trailers"
   3 *
   4 * Copyright (c) 2013, 2014 Christian Couder <chriscool@tuxfamily.org>
   5 *
   6 */
   7
   8#include "cache.h"
   9#include "builtin.h"
  10#include "parse-options.h"
  11#include "string-list.h"
  12#include "trailer.h"
  13#include "config.h"
  14
  15static const char * const git_interpret_trailers_usage[] = {
  16        N_("git interpret-trailers [--in-place] [--trim-empty] [(--trailer <token>[(=|:)<value>])...] [<file>...]"),
  17        NULL
  18};
  19
  20static enum trailer_where where;
  21static enum trailer_if_exists if_exists;
  22static enum trailer_if_missing if_missing;
  23
  24static int option_parse_where(const struct option *opt,
  25                              const char *arg, int unset)
  26{
  27        return trailer_set_where(&where, arg);
  28}
  29
  30static int option_parse_if_exists(const struct option *opt,
  31                                  const char *arg, int unset)
  32{
  33        return trailer_set_if_exists(&if_exists, arg);
  34}
  35
  36static int option_parse_if_missing(const struct option *opt,
  37                                   const char *arg, int unset)
  38{
  39        return trailer_set_if_missing(&if_missing, arg);
  40}
  41
  42static void new_trailers_clear(struct list_head *trailers)
  43{
  44        struct list_head *pos, *tmp;
  45        struct new_trailer_item *item;
  46
  47        list_for_each_safe(pos, tmp, trailers) {
  48                item = list_entry(pos, struct new_trailer_item, list);
  49                list_del(pos);
  50                free(item);
  51        }
  52}
  53
  54static int option_parse_trailer(const struct option *opt,
  55                                   const char *arg, int unset)
  56{
  57        struct list_head *trailers = opt->value;
  58        struct new_trailer_item *item;
  59
  60        if (unset) {
  61                new_trailers_clear(trailers);
  62                return 0;
  63        }
  64
  65        if (!arg)
  66                return -1;
  67
  68        item = xmalloc(sizeof(*item));
  69        item->text = arg;
  70        item->where = where;
  71        item->if_exists = if_exists;
  72        item->if_missing = if_missing;
  73        list_add_tail(&item->list, trailers);
  74        return 0;
  75}
  76
  77static int parse_opt_parse(const struct option *opt, const char *arg,
  78                           int unset)
  79{
  80        struct process_trailer_options *v = opt->value;
  81        v->only_trailers = 1;
  82        v->only_input = 1;
  83        v->unfold = 1;
  84        BUG_ON_OPT_NEG(unset);
  85        BUG_ON_OPT_ARG(arg);
  86        return 0;
  87}
  88
  89int cmd_interpret_trailers(int argc, const char **argv, const char *prefix)
  90{
  91        struct process_trailer_options opts = PROCESS_TRAILER_OPTIONS_INIT;
  92        LIST_HEAD(trailers);
  93
  94        struct option options[] = {
  95                OPT_BOOL(0, "in-place", &opts.in_place, N_("edit files in place")),
  96                OPT_BOOL(0, "trim-empty", &opts.trim_empty, N_("trim empty trailers")),
  97
  98                OPT_CALLBACK(0, "where", NULL, N_("action"),
  99                             N_("where to place the new trailer"), option_parse_where),
 100                OPT_CALLBACK(0, "if-exists", NULL, N_("action"),
 101                             N_("action if trailer already exists"), option_parse_if_exists),
 102                OPT_CALLBACK(0, "if-missing", NULL, N_("action"),
 103                             N_("action if trailer is missing"), option_parse_if_missing),
 104
 105                OPT_BOOL(0, "only-trailers", &opts.only_trailers, N_("output only the trailers")),
 106                OPT_BOOL(0, "only-input", &opts.only_input, N_("do not apply config rules")),
 107                OPT_BOOL(0, "unfold", &opts.unfold, N_("join whitespace-continued values")),
 108                { OPTION_CALLBACK, 0, "parse", &opts, NULL, N_("set parsing options"),
 109                        PARSE_OPT_NOARG | PARSE_OPT_NONEG, parse_opt_parse },
 110                OPT_BOOL(0, "no-divider", &opts.no_divider, N_("do not treat --- specially")),
 111                OPT_CALLBACK(0, "trailer", &trailers, N_("trailer"),
 112                                N_("trailer(s) to add"), option_parse_trailer),
 113                OPT_END()
 114        };
 115
 116        git_config(git_default_config, NULL);
 117
 118        argc = parse_options(argc, argv, prefix, options,
 119                             git_interpret_trailers_usage, 0);
 120
 121        if (opts.only_input && !list_empty(&trailers))
 122                usage_msg_opt(
 123                        _("--trailer with --only-input does not make sense"),
 124                        git_interpret_trailers_usage,
 125                        options);
 126
 127        if (argc) {
 128                int i;
 129                for (i = 0; i < argc; i++)
 130                        process_trailers(argv[i], &opts, &trailers);
 131        } else {
 132                if (opts.in_place)
 133                        die(_("no input file given for in-place editing"));
 134                process_trailers(NULL, &opts, &trailers);
 135        }
 136
 137        new_trailers_clear(&trailers);
 138
 139        return 0;
 140}