parse-options-cb.c

   1 #include "git-compat-util.h"
   2 #include "parse-options.h"
   3 #include "branch.h"
   4 #include "commit.h"
   5 #include "color.h"
   6 #include "date.h"
   7 #include "environment.h"
   8 #include "gettext.h"
   9 #include "object-name.h"
  10 #include "string-list.h"
  11 #include "strvec.h"
  12 #include "oid-array.h"
  13
  14 /*----- some often used options -----*/
  15
  16 int parse_opt_abbrev_cb(const struct option *opt, const char *arg, int unset)
  17 {
  18         int v;
  19
  20         if (!arg) {
  21                 v = unset ? 0 : DEFAULT_ABBREV;
  22         } else {
  23                 if (!*arg)
  24                         return error(_("option `%s' expects a numerical value"),
  25                                      opt->long_name);
  26                 v = strtol(arg, (char **)&arg, 10);
  27                 if (*arg)
  28                         return error(_("option `%s' expects a numerical value"),
  29                                      opt->long_name);
  30                 if (v && v < MINIMUM_ABBREV)
  31                         v = MINIMUM_ABBREV;
  32                 else if (v > the_hash_algo->hexsz)
  33                         v = the_hash_algo->hexsz;
  34         }
  35         *(int *)(opt->value) = v;
  36         return 0;
  37 }
  38
  39 int parse_opt_expiry_date_cb(const struct option *opt, const char *arg,
  40                              int unset)
  41 {
  42         if (unset)
  43                 arg = "never";
  44         if (parse_expiry_date(arg, (timestamp_t *)opt->value))
  45                 die(_("malformed expiration date '%s'"), arg);
  46         return 0;
  47 }
  48
  49 int parse_opt_color_flag_cb(const struct option *opt, const char *arg,
  50                             int unset)
  51 {
  52         int value;
  53
  54         if (!arg)
  55                 arg = unset ? "never" : (const char *)opt->defval;
  56         value = git_config_colorbool(NULL, arg);
  57         if (value < 0)
  58                 return error(_("option `%s' expects \"always\", \"auto\", or \"never\""),
  59                              opt->long_name);
  60         *(int *)opt->value = value;
  61         return 0;
  62 }
  63
  64 int parse_opt_verbosity_cb(const struct option *opt, const char *arg,
  65                            int unset)
  66 {
  67         int *target = opt->value;
  68
  69         BUG_ON_OPT_ARG(arg);
  70
  71         if (unset)
  72                 /* --no-quiet, --no-verbose */
  73                 *target = 0;
  74         else if (opt->short_name == 'v') {
  75                 if (*target >= 0)
  76                         (*target)++;
  77                 else
  78                         *target = 1;
  79         } else {
  80                 if (*target <= 0)
  81                         (*target)--;
  82                 else
  83                         *target = -1;
  84         }
  85         return 0;
  86 }
  87
  88 int parse_opt_commits(const struct option *opt, const char *arg, int unset)
  89 {
  90         struct object_id oid;
  91         struct commit *commit;
  92
  93         BUG_ON_OPT_NEG(unset);
  94
  95         if (!arg)
  96                 return -1;
  97         if (repo_get_oid(the_repository, arg, &oid))
  98                 return error("malformed object name %s", arg);
  99         commit = lookup_commit_reference(the_repository, &oid);
 100         if (!commit)
 101                 return error("no such commit %s", arg);
 102         commit_list_insert(commit, opt->value);
 103         return 0;
 104 }
 105
 106 int parse_opt_commit(const struct option *opt, const char *arg, int unset)
 107 {
 108         struct object_id oid;
 109         struct commit *commit;
 110         struct commit **target = opt->value;
 111
 112         BUG_ON_OPT_NEG(unset);
 113
 114         if (!arg)
 115                 return -1;
 116         if (repo_get_oid(the_repository, arg, &oid))
 117                 return error("malformed object name %s", arg);
 118         commit = lookup_commit_reference(the_repository, &oid);
 119         if (!commit)
 120                 return error("no such commit %s", arg);
 121         *target = commit;
 122         return 0;
 123 }
 124
 125 int parse_opt_object_name(const struct option *opt, const char *arg, int unset)
 126 {
 127         struct object_id oid;
 128
 129         if (unset) {
 130                 oid_array_clear(opt->value);
 131                 return 0;
 132         }
 133         if (!arg)
 134                 return -1;
 135         if (repo_get_oid(the_repository, arg, &oid))
 136                 return error(_("malformed object name '%s'"), arg);
 137         oid_array_append(opt->value, &oid);
 138         return 0;
 139 }
 140
 141 int parse_opt_object_id(const struct option *opt, const char *arg, int unset)
 142 {
 143         struct object_id oid;
 144         struct object_id *target = opt->value;
 145
 146         if (unset) {
 147                 oidcpy(target, null_oid());
 148                 return 0;
 149         }
 150         if (!arg)
 151                 return -1;
 152         if (repo_get_oid(the_repository, arg, &oid))
 153                 return error(_("malformed object name '%s'"), arg);
 154         *target = oid;
 155         return 0;
 156 }
 157
 158 int parse_opt_tertiary(const struct option *opt, const char *arg, int unset)
 159 {
 160         int *target = opt->value;
 161
 162         BUG_ON_OPT_ARG(arg);
 163
 164         *target = unset ? 2 : 1;
 165         return 0;
 166 }
 167
 168 static size_t parse_options_count(const struct option *opt)
 169 {
 170         size_t n = 0;
 171
 172         for (; opt && opt->type != OPTION_END; opt++)
 173                 n++;
 174         return n;
 175 }
 176
 177 struct option *parse_options_dup(const struct option *o)
 178 {
 179         struct option no_options[] = { OPT_END() };
 180
 181         return parse_options_concat(o, no_options);
 182 }
 183
 184 struct option *parse_options_concat(const struct option *a,
 185                                     const struct option *b)
 186 {
 187         struct option *ret;
 188         size_t a_len = parse_options_count(a);
 189         size_t b_len = parse_options_count(b);
 190
 191         ALLOC_ARRAY(ret, st_add3(a_len, b_len, 1));
 192         COPY_ARRAY(ret, a, a_len);
 193         COPY_ARRAY(ret + a_len, b, b_len + 1); /* + 1 for final OPTION_END */
 194
 195         return ret;
 196 }
 197
 198 int parse_opt_string_list(const struct option *opt, const char *arg, int unset)
 199 {
 200         struct string_list *v = opt->value;
 201
 202         if (unset) {
 203                 string_list_clear(v, 0);
 204                 return 0;
 205         }
 206
 207         if (!arg)
 208                 return -1;
 209
 210         string_list_append(v, arg);
 211         return 0;
 212 }
 213
 214 int parse_opt_strvec(const struct option *opt, const char *arg, int unset)
 215 {
 216         struct strvec *v = opt->value;
 217
 218         if (unset) {
 219                 strvec_clear(v);
 220                 return 0;
 221         }
 222
 223         if (!arg)
 224                 return -1;
 225
 226         strvec_push(v, arg);
 227         return 0;
 228 }
 229
 230 int parse_opt_noop_cb(const struct option *opt UNUSED,
 231                       const char *arg UNUSED,
 232                       int unset UNUSED)
 233 {
 234         return 0;
 235 }
 236
 237 /**
 238  * Recreates the command-line option in the strbuf.
 239  */
 240 static int recreate_opt(struct strbuf *sb, const struct option *opt,
 241                 const char *arg, int unset)
 242 {
 243         strbuf_reset(sb);
 244
 245         if (opt->long_name) {
 246                 strbuf_addstr(sb, unset ? "--no-" : "--");
 247                 strbuf_addstr(sb, opt->long_name);
 248                 if (arg) {
 249                         strbuf_addch(sb, '=');
 250                         strbuf_addstr(sb, arg);
 251                 }
 252         } else if (opt->short_name && !unset) {
 253                 strbuf_addch(sb, '-');
 254                 strbuf_addch(sb, opt->short_name);
 255                 if (arg)
 256                         strbuf_addstr(sb, arg);
 257         } else
 258                 return -1;
 259
 260         return 0;
 261 }
 262
 263 /**
 264  * For an option opt, recreates the command-line option in opt->value which
 265  * must be an char* initialized to NULL. This is useful when we need to pass
 266  * the command-line option to another command. Since any previous value will be
 267  * overwritten, this callback should only be used for options where the last
 268  * one wins.
 269  */
 270 int parse_opt_passthru(const struct option *opt, const char *arg, int unset)
 271 {
 272         static struct strbuf sb = STRBUF_INIT;
 273         char **opt_value = opt->value;
 274
 275         if (recreate_opt(&sb, opt, arg, unset) < 0)
 276                 return -1;
 277
 278         free(*opt_value);
 279
 280         *opt_value = strbuf_detach(&sb, NULL);
 281
 282         return 0;
 283 }
 284
 285 /**
 286  * For an option opt, recreate the command-line option, appending it to
 287  * opt->value which must be a strvec. This is useful when we need to pass
 288  * the command-line option, which can be specified multiple times, to another
 289  * command.
 290  */
 291 int parse_opt_passthru_argv(const struct option *opt, const char *arg, int unset)
 292 {
 293         static struct strbuf sb = STRBUF_INIT;
 294         struct strvec *opt_value = opt->value;
 295
 296         if (recreate_opt(&sb, opt, arg, unset) < 0)
 297                 return -1;
 298
 299         strvec_push(opt_value, sb.buf);
 300
 301         return 0;
 302 }
 303
 304 int parse_opt_tracking_mode(const struct option *opt, const char *arg, int unset)
 305 {
 306         if (unset)
 307                 *(enum branch_track *)opt->value = BRANCH_TRACK_NEVER;
 308         else if (!arg || !strcmp(arg, "direct"))
 309                 *(enum branch_track *)opt->value = BRANCH_TRACK_EXPLICIT;
 310         else if (!strcmp(arg, "inherit"))
 311                 *(enum branch_track *)opt->value = BRANCH_TRACK_INHERIT;
 312         else
 313                 return error(_("option `%s' expects \"%s\" or \"%s\""),
 314                              "--track", "direct", "inherit");
 315
 316         return 0;
 317 }