parse-options-cb.con commit parseopt: handle malformed --expire arguments more nicely (8ab5aa4)
   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
  12int 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 opterror(opt, "expects a numerical value", 0);
  22                if (v && v < MINIMUM_ABBREV)
  23                        v = MINIMUM_ABBREV;
  24                else if (v > 40)
  25                        v = 40;
  26        }
  27        *(int *)(opt->value) = v;
  28        return 0;
  29}
  30
  31int parse_opt_approxidate_cb(const struct option *opt, const char *arg,
  32                             int unset)
  33{
  34        *(timestamp_t *)(opt->value) = approxidate(arg);
  35        return 0;
  36}
  37
  38int parse_opt_expiry_date_cb(const struct option *opt, const char *arg,
  39                             int unset)
  40{
  41        if (unset)
  42                arg = "never";
  43        if (parse_expiry_date(arg, (timestamp_t *)opt->value))
  44                die(_("malformed expiration date '%s'"), arg);
  45        return 0;
  46}
  47
  48int parse_opt_color_flag_cb(const struct option *opt, const char *arg,
  49                            int unset)
  50{
  51        int value;
  52
  53        if (!arg)
  54                arg = unset ? "never" : (const char *)opt->defval;
  55        value = git_config_colorbool(NULL, arg);
  56        if (value < 0)
  57                return opterror(opt,
  58                        "expects \"always\", \"auto\", or \"never\"", 0);
  59        *(int *)opt->value = value;
  60        return 0;
  61}
  62
  63int parse_opt_verbosity_cb(const struct option *opt, const char *arg,
  64                           int unset)
  65{
  66        int *target = opt->value;
  67
  68        if (unset)
  69                /* --no-quiet, --no-verbose */
  70                *target = 0;
  71        else if (opt->short_name == 'v') {
  72                if (*target >= 0)
  73                        (*target)++;
  74                else
  75                        *target = 1;
  76        } else {
  77                if (*target <= 0)
  78                        (*target)--;
  79                else
  80                        *target = -1;
  81        }
  82        return 0;
  83}
  84
  85int parse_opt_commits(const struct option *opt, const char *arg, int unset)
  86{
  87        struct object_id oid;
  88        struct commit *commit;
  89
  90        if (!arg)
  91                return -1;
  92        if (get_oid(arg, &oid))
  93                return error("malformed object name %s", arg);
  94        commit = lookup_commit_reference(&oid);
  95        if (!commit)
  96                return error("no such commit %s", arg);
  97        commit_list_insert(commit, opt->value);
  98        return 0;
  99}
 100
 101int parse_opt_object_name(const struct option *opt, const char *arg, int unset)
 102{
 103        struct object_id oid;
 104
 105        if (unset) {
 106                oid_array_clear(opt->value);
 107                return 0;
 108        }
 109        if (!arg)
 110                return -1;
 111        if (get_oid(arg, &oid))
 112                return error(_("malformed object name '%s'"), arg);
 113        oid_array_append(opt->value, &oid);
 114        return 0;
 115}
 116
 117int parse_opt_tertiary(const struct option *opt, const char *arg, int unset)
 118{
 119        int *target = opt->value;
 120        *target = unset ? 2 : 1;
 121        return 0;
 122}
 123
 124struct option *parse_options_concat(struct option *a, struct option *b)
 125{
 126        struct option *ret;
 127        size_t i, a_len = 0, b_len = 0;
 128
 129        for (i = 0; a[i].type != OPTION_END; i++)
 130                a_len++;
 131        for (i = 0; b[i].type != OPTION_END; i++)
 132                b_len++;
 133
 134        ALLOC_ARRAY(ret, st_add3(a_len, b_len, 1));
 135        for (i = 0; i < a_len; i++)
 136                ret[i] = a[i];
 137        for (i = 0; i < b_len; i++)
 138                ret[a_len + i] = b[i];
 139        ret[a_len + b_len] = b[b_len]; /* final OPTION_END */
 140
 141        return ret;
 142}
 143
 144int parse_opt_string_list(const struct option *opt, const char *arg, int unset)
 145{
 146        struct string_list *v = opt->value;
 147
 148        if (unset) {
 149                string_list_clear(v, 0);
 150                return 0;
 151        }
 152
 153        if (!arg)
 154                return -1;
 155
 156        string_list_append(v, arg);
 157        return 0;
 158}
 159
 160int parse_opt_noop_cb(const struct option *opt, const char *arg, int unset)
 161{
 162        return 0;
 163}
 164
 165/**
 166 * Report that the option is unknown, so that other code can handle
 167 * it. This can be used as a callback together with
 168 * OPTION_LOWLEVEL_CALLBACK to allow an option to be documented in the
 169 * "-h" output even if it's not being handled directly by
 170 * parse_options().
 171 */
 172int parse_opt_unknown_cb(const struct option *opt, const char *arg, int unset)
 173{
 174        return -2;
 175}
 176
 177/**
 178 * Recreates the command-line option in the strbuf.
 179 */
 180static int recreate_opt(struct strbuf *sb, const struct option *opt,
 181                const char *arg, int unset)
 182{
 183        strbuf_reset(sb);
 184
 185        if (opt->long_name) {
 186                strbuf_addstr(sb, unset ? "--no-" : "--");
 187                strbuf_addstr(sb, opt->long_name);
 188                if (arg) {
 189                        strbuf_addch(sb, '=');
 190                        strbuf_addstr(sb, arg);
 191                }
 192        } else if (opt->short_name && !unset) {
 193                strbuf_addch(sb, '-');
 194                strbuf_addch(sb, opt->short_name);
 195                if (arg)
 196                        strbuf_addstr(sb, arg);
 197        } else
 198                return -1;
 199
 200        return 0;
 201}
 202
 203/**
 204 * For an option opt, recreates the command-line option in opt->value which
 205 * must be an char* initialized to NULL. This is useful when we need to pass
 206 * the command-line option to another command. Since any previous value will be
 207 * overwritten, this callback should only be used for options where the last
 208 * one wins.
 209 */
 210int parse_opt_passthru(const struct option *opt, const char *arg, int unset)
 211{
 212        static struct strbuf sb = STRBUF_INIT;
 213        char **opt_value = opt->value;
 214
 215        if (recreate_opt(&sb, opt, arg, unset) < 0)
 216                return -1;
 217
 218        free(*opt_value);
 219
 220        *opt_value = strbuf_detach(&sb, NULL);
 221
 222        return 0;
 223}
 224
 225/**
 226 * For an option opt, recreate the command-line option, appending it to
 227 * opt->value which must be a argv_array. This is useful when we need to pass
 228 * the command-line option, which can be specified multiple times, to another
 229 * command.
 230 */
 231int parse_opt_passthru_argv(const struct option *opt, const char *arg, int unset)
 232{
 233        static struct strbuf sb = STRBUF_INIT;
 234        struct argv_array *opt_value = opt->value;
 235
 236        if (recreate_opt(&sb, opt, arg, unset) < 0)
 237                return -1;
 238
 239        argv_array_push(opt_value, sb.buf);
 240
 241        return 0;
 242}