parse-options-cb.c

   1 #include "git-compat-util.h"
   2 #include "parse-options.h"
   3 #include "cache.h"
   4 #include "commit.h"
   5 #include "color.h"
   6 #include "string-list.h"
   7 #include "argv-array.h"
   8 #include "sha1-array.h"
   9
  10 /*----- some often used options -----*/
  11
  12 int parse_opt_abbrev_cb(const struct option *opt, const char *arg, int unset)
  13 {
  14         int v;
  15
  16         if (!arg) {
  17                 v = unset ? 0 : DEFAULT_ABBREV;
  18         } else {
  19                 v = strtol(arg, (char **)&arg, 10);
  20                 if (*arg)
  21                         return error(_("option `%s' expects a numerical value"),
  22                                      opt->long_name);
  23                 if (v && v < MINIMUM_ABBREV)
  24                         v = MINIMUM_ABBREV;
  25                 else if (v > the_hash_algo->hexsz)
  26                         v = the_hash_algo->hexsz;
  27         }
  28         *(int *)(opt->value) = v;
  29         return 0;
  30 }
  31
  32 int parse_opt_expiry_date_cb(const struct option *opt, const char *arg,
  33                              int unset)
  34 {
  35         if (unset)
  36                 arg = "never";
  37         if (parse_expiry_date(arg, (timestamp_t *)opt->value))
  38                 die(_("malformed expiration date '%s'"), arg);
  39         return 0;
  40 }
  41
  42 int parse_opt_color_flag_cb(const struct option *opt, const char *arg,
  43                             int unset)
  44 {
  45         int value;
  46
  47         if (!arg)
  48                 arg = unset ? "never" : (const char *)opt->defval;
  49         value = git_config_colorbool(NULL, arg);
  50         if (value < 0)
  51                 return error(_("option `%s' expects \"always\", \"auto\", or \"never\""),
  52                              opt->long_name);
  53         *(int *)opt->value = value;
  54         return 0;
  55 }
  56
  57 int parse_opt_verbosity_cb(const struct option *opt, const char *arg,
  58                            int unset)
  59 {
  60         int *target = opt->value;
  61
  62         BUG_ON_OPT_ARG(arg);
  63
  64         if (unset)
  65                 /* --no-quiet, --no-verbose */
  66                 *target = 0;
  67         else if (opt->short_name == 'v') {
  68                 if (*target >= 0)
  69                         (*target)++;
  70                 else
  71                         *target = 1;
  72         } else {
  73                 if (*target <= 0)
  74                         (*target)--;
  75                 else
  76                         *target = -1;
  77         }
  78         return 0;
  79 }
  80
  81 int parse_opt_commits(const struct option *opt, const char *arg, int unset)
  82 {
  83         struct object_id oid;
  84         struct commit *commit;
  85
  86         BUG_ON_OPT_NEG(unset);
  87
  88         if (!arg)
  89                 return -1;
  90         if (get_oid(arg, &oid))
  91                 return error("malformed object name %s", arg);
  92         commit = lookup_commit_reference(the_repository, &oid);
  93         if (!commit)
  94                 return error("no such commit %s", arg);
  95         commit_list_insert(commit, opt->value);
  96         return 0;
  97 }
  98
  99 int parse_opt_commit(const struct option *opt, const char *arg, int unset)
 100 {
 101         struct object_id oid;
 102         struct commit *commit;
 103         struct commit **target = opt->value;
 104
 105         if (!arg)
 106                 return -1;
 107         if (get_oid(arg, &oid))
 108                 return error("malformed object name %s", arg);
 109         commit = lookup_commit_reference(the_repository, &oid);
 110         if (!commit)
 111                 return error("no such commit %s", arg);
 112         *target = commit;
 113         return 0;
 114 }
 115
 116 int parse_opt_object_name(const struct option *opt, const char *arg, int unset)
 117 {
 118         struct object_id oid;
 119
 120         if (unset) {
 121                 oid_array_clear(opt->value);
 122                 return 0;
 123         }
 124         if (!arg)
 125                 return -1;
 126         if (get_oid(arg, &oid))
 127                 return error(_("malformed object name '%s'"), arg);
 128         oid_array_append(opt->value, &oid);
 129         return 0;
 130 }
 131
 132 int parse_opt_object_id(const struct option *opt, const char *arg, int unset)
 133 {
 134         struct object_id oid;
 135         struct object_id *target = opt->value;
 136
 137         if (unset) {
 138                 *target = null_oid;
 139                 return 0;
 140         }
 141         if (!arg)
 142                 return -1;
 143         if (get_oid(arg, &oid))
 144                 return error(_("malformed object name '%s'"), arg);
 145         *target = oid;
 146         return 0;
 147 }
 148
 149 int parse_opt_tertiary(const struct option *opt, const char *arg, int unset)
 150 {
 151         int *target = opt->value;
 152
 153         BUG_ON_OPT_ARG(arg);
 154
 155         *target = unset ? 2 : 1;
 156         return 0;
 157 }
 158
 159 struct option *parse_options_concat(struct option *a, struct option *b)
 160 {
 161         struct option *ret;
 162         size_t i, a_len = 0, b_len = 0;
 163
 164         for (i = 0; a[i].type != OPTION_END; i++)
 165                 a_len++;
 166         for (i = 0; b[i].type != OPTION_END; i++)
 167                 b_len++;
 168
 169         ALLOC_ARRAY(ret, st_add3(a_len, b_len, 1));
 170         for (i = 0; i < a_len; i++)
 171                 ret[i] = a[i];
 172         for (i = 0; i < b_len; i++)
 173                 ret[a_len + i] = b[i];
 174         ret[a_len + b_len] = b[b_len]; /* final OPTION_END */
 175
 176         return ret;
 177 }
 178
 179 int parse_opt_string_list(const struct option *opt, const char *arg, int unset)
 180 {
 181         struct string_list *v = opt->value;
 182
 183         if (unset) {
 184                 string_list_clear(v, 0);
 185                 return 0;
 186         }
 187
 188         if (!arg)
 189                 return -1;
 190
 191         string_list_append(v, arg);
 192         return 0;
 193 }
 194
 195 int parse_opt_noop_cb(const struct option *opt, const char *arg, int unset)
 196 {
 197         return 0;
 198 }
 199
 200 /**
 201  * Report that the option is unknown, so that other code can handle
 202  * it. This can be used as a callback together with
 203  * OPTION_LOWLEVEL_CALLBACK to allow an option to be documented in the
 204  * "-h" output even if it's not being handled directly by
 205  * parse_options().
 206  */
 207 enum parse_opt_result parse_opt_unknown_cb(struct parse_opt_ctx_t *ctx,
 208                                            const struct option *opt,
 209                                            const char *arg, int unset)
 210 {
 211         BUG_ON_OPT_ARG(arg);
 212         return PARSE_OPT_UNKNOWN;
 213 }
 214
 215 /**
 216  * Recreates the command-line option in the strbuf.
 217  */
 218 static int recreate_opt(struct strbuf *sb, const struct option *opt,
 219                 const char *arg, int unset)
 220 {
 221         strbuf_reset(sb);
 222
 223         if (opt->long_name) {
 224                 strbuf_addstr(sb, unset ? "--no-" : "--");
 225                 strbuf_addstr(sb, opt->long_name);
 226                 if (arg) {
 227                         strbuf_addch(sb, '=');
 228                         strbuf_addstr(sb, arg);
 229                 }
 230         } else if (opt->short_name && !unset) {
 231                 strbuf_addch(sb, '-');
 232                 strbuf_addch(sb, opt->short_name);
 233                 if (arg)
 234                         strbuf_addstr(sb, arg);
 235         } else
 236                 return -1;
 237
 238         return 0;
 239 }
 240
 241 /**
 242  * For an option opt, recreates the command-line option in opt->value which
 243  * must be an char* initialized to NULL. This is useful when we need to pass
 244  * the command-line option to another command. Since any previous value will be
 245  * overwritten, this callback should only be used for options where the last
 246  * one wins.
 247  */
 248 int parse_opt_passthru(const struct option *opt, const char *arg, int unset)
 249 {
 250         static struct strbuf sb = STRBUF_INIT;
 251         char **opt_value = opt->value;
 252
 253         if (recreate_opt(&sb, opt, arg, unset) < 0)
 254                 return -1;
 255
 256         free(*opt_value);
 257
 258         *opt_value = strbuf_detach(&sb, NULL);
 259
 260         return 0;
 261 }
 262
 263 /**
 264  * For an option opt, recreate the command-line option, appending it to
 265  * opt->value which must be a argv_array. This is useful when we need to pass
 266  * the command-line option, which can be specified multiple times, to another
 267  * command.
 268  */
 269 int parse_opt_passthru_argv(const struct option *opt, const char *arg, int unset)
 270 {
 271         static struct strbuf sb = STRBUF_INIT;
 272         struct argv_array *opt_value = opt->value;
 273
 274         if (recreate_opt(&sb, opt, arg, unset) < 0)
 275                 return -1;
 276
 277         argv_array_push(opt_value, sb.buf);
 278
 279         return 0;
 280 }