return 0;
}
+static void fix_filename(const char *prefix, const char **file)
+{
+ if (!file || !*file || !prefix || is_absolute_path(*file)
+ || !strcmp("-", *file))
+ return;
+ *file = xstrdup(prefix_filename(prefix, strlen(prefix), *file));
+}
+
static int get_value(struct parse_opt_ctx_t *p,
const struct option *opt, int flags)
{
const char *s, *arg;
const int unset = flags & OPT_UNSET;
+ int err;
if (unset && p->opt)
return opterror(opt, "takes no value", flags);
/* FALLTHROUGH */
case OPTION_BOOLEAN:
case OPTION_BIT:
+ case OPTION_NEGBIT:
case OPTION_SET_INT:
case OPTION_SET_PTR:
return opterror(opt, "takes no value", flags);
*(int *)opt->value |= opt->defval;
return 0;
+ case OPTION_NEGBIT:
+ if (unset)
+ *(int *)opt->value |= opt->defval;
+ else
+ *(int *)opt->value &= ~opt->defval;
+ return 0;
+
case OPTION_BOOLEAN:
*(int *)opt->value = unset ? 0 : *(int *)opt->value + 1;
return 0;
return get_arg(p, opt, flags, (const char **)opt->value);
return 0;
+ case OPTION_FILENAME:
+ err = 0;
+ if (unset)
+ *(const char **)opt->value = NULL;
+ else if (opt->flags & PARSE_OPT_OPTARG && !p->opt)
+ *(const char **)opt->value = (const char *)opt->defval;
+ else
+ err = get_arg(p, opt, flags, (const char **)opt->value);
+
+ if (!err)
+ fix_filename(p->prefix, (const char **)opt->value);
+ return err;
+
case OPTION_CALLBACK:
if (unset)
return (*opt->callback)(opt, NULL, 1) ? (-1) : 0;
static int parse_short_opt(struct parse_opt_ctx_t *p, const struct option *options)
{
+ const struct option *numopt = NULL;
+
for (; options->type != OPTION_END; options++) {
if (options->short_name == *p->opt) {
p->opt = p->opt[1] ? p->opt + 1 : NULL;
return get_value(p, options, OPT_SHORT);
}
+
+ /*
+ * Handle the numerical option later, explicit one-digit
+ * options take precedence over it.
+ */
+ if (options->type == OPTION_NUMBER)
+ numopt = options;
+ }
+ if (numopt && isdigit(*p->opt)) {
+ size_t len = 1;
+ char *arg;
+ int rc;
+
+ while (isdigit(p->opt[len]))
+ len++;
+ arg = xmemdupz(p->opt, len);
+ p->opt = p->opt[len] ? p->opt + len : NULL;
+ rc = (*numopt->callback)(numopt, arg, 0) ? (-1) : 0;
+ free(arg);
+ return rc;
}
return -2;
}
abbrev_flags = flags;
continue;
}
+ /* negation allowed? */
+ if (options->flags & PARSE_OPT_NONEG)
+ continue;
/* negated and abbreviated very much? */
if (!prefixcmp("no-", arg)) {
flags |= OPT_UNSET;
return -2;
}
+static int parse_nodash_opt(struct parse_opt_ctx_t *p, const char *arg,
+ const struct option *options)
+{
+ for (; options->type != OPTION_END; options++) {
+ if (!(options->flags & PARSE_OPT_NODASH))
+ continue;
+ if ((options->flags & PARSE_OPT_OPTARG) ||
+ !(options->flags & PARSE_OPT_NOARG))
+ die("BUG: dashless options don't support arguments");
+ if (!(options->flags & PARSE_OPT_NONEG))
+ die("BUG: dashless options don't support negation");
+ if (options->long_name)
+ die("BUG: dashless options can't be long");
+ if (options->short_name == arg[0] && arg[1] == '\0')
+ return get_value(p, options, OPT_SHORT);
+ }
+ return -2;
+}
+
static void check_typos(const char *arg, const struct option *options)
{
if (strlen(arg) < 3)
}
}
+static void parse_options_check(const struct option *opts)
+{
+ int err = 0;
+
+ for (; opts->type != OPTION_END; opts++) {
+ if ((opts->flags & PARSE_OPT_LASTARG_DEFAULT) &&
+ (opts->flags & PARSE_OPT_OPTARG)) {
+ if (opts->long_name) {
+ error("`--%s` uses incompatible flags "
+ "LASTARG_DEFAULT and OPTARG", opts->long_name);
+ } else {
+ error("`-%c` uses incompatible flags "
+ "LASTARG_DEFAULT and OPTARG", opts->short_name);
+ }
+ err |= 1;
+ }
+ }
+
+ if (err)
+ exit(129);
+}
+
void parse_options_start(struct parse_opt_ctx_t *ctx,
- int argc, const char **argv, int flags)
+ int argc, const char **argv, const char *prefix,
+ int flags)
{
memset(ctx, 0, sizeof(*ctx));
ctx->argc = argc - 1;
ctx->argv = argv + 1;
ctx->out = argv;
+ ctx->prefix = prefix;
ctx->cpidx = ((flags & PARSE_OPT_KEEP_ARGV0) != 0);
ctx->flags = flags;
+ if ((flags & PARSE_OPT_KEEP_UNKNOWN) &&
+ (flags & PARSE_OPT_STOP_AT_NON_OPTION))
+ die("STOP_AT_NON_OPTION and KEEP_UNKNOWN don't go together");
}
static int usage_with_options_internal(const char * const *,
const struct option *options,
const char * const usagestr[])
{
+ int internal_help = !(ctx->flags & PARSE_OPT_NO_INTERNAL_HELP);
+
+ parse_options_check(options);
+
/* we must reset ->opt, unknown short option leave it dangling */
ctx->opt = NULL;
const char *arg = ctx->argv[0];
if (*arg != '-' || !arg[1]) {
+ if (parse_nodash_opt(ctx, arg, options) == 0)
+ continue;
if (ctx->flags & PARSE_OPT_STOP_AT_NON_OPTION)
break;
ctx->out[ctx->cpidx++] = ctx->argv[0];
if (arg[1] != '-') {
ctx->opt = arg + 1;
- if (*ctx->opt == 'h')
+ if (internal_help && *ctx->opt == 'h')
return parse_options_usage(usagestr, options);
switch (parse_short_opt(ctx, options)) {
case -1:
return parse_options_usage(usagestr, options);
case -2:
- return PARSE_OPT_UNKNOWN;
+ goto unknown;
}
if (ctx->opt)
check_typos(arg + 1, options);
while (ctx->opt) {
- if (*ctx->opt == 'h')
+ if (internal_help && *ctx->opt == 'h')
return parse_options_usage(usagestr, options);
switch (parse_short_opt(ctx, options)) {
case -1:
*/
ctx->argv[0] = xstrdup(ctx->opt - 1);
*(char *)ctx->argv[0] = '-';
- return PARSE_OPT_UNKNOWN;
+ goto unknown;
}
}
continue;
break;
}
- if (!strcmp(arg + 2, "help-all"))
+ if (internal_help && !strcmp(arg + 2, "help-all"))
return usage_with_options_internal(usagestr, options, 1);
- if (!strcmp(arg + 2, "help"))
+ if (internal_help && !strcmp(arg + 2, "help"))
return parse_options_usage(usagestr, options);
switch (parse_long_opt(ctx, arg + 2, options)) {
case -1:
return parse_options_usage(usagestr, options);
case -2:
- return PARSE_OPT_UNKNOWN;
+ goto unknown;
}
+ continue;
+unknown:
+ if (!(ctx->flags & PARSE_OPT_KEEP_UNKNOWN))
+ return PARSE_OPT_UNKNOWN;
+ ctx->out[ctx->cpidx++] = ctx->argv[0];
+ ctx->opt = NULL;
}
return PARSE_OPT_DONE;
}
return ctx->cpidx + ctx->argc;
}
-int parse_options(int argc, const char **argv, const struct option *options,
- const char * const usagestr[], int flags)
+int parse_options(int argc, const char **argv, const char *prefix,
+ const struct option *options, const char * const usagestr[],
+ int flags)
{
struct parse_opt_ctx_t ctx;
- parse_options_start(&ctx, argc, argv, flags);
+ parse_options_start(&ctx, argc, argv, prefix, flags);
switch (parse_options_step(&ctx, options, usagestr)) {
case PARSE_OPT_HELP:
exit(129);
return parse_options_end(&ctx);
}
+static int usage_argh(const struct option *opts)
+{
+ const char *s;
+ int literal = (opts->flags & PARSE_OPT_LITERAL_ARGHELP) || !opts->argh;
+ if (opts->flags & PARSE_OPT_OPTARG)
+ if (opts->long_name)
+ s = literal ? "[=%s]" : "[=<%s>]";
+ else
+ s = literal ? "[%s]" : "[<%s>]";
+ else
+ s = literal ? " %s" : " <%s>";
+ return fprintf(stderr, s, opts->argh ? opts->argh : "...");
+}
+
#define USAGE_OPTS_WIDTH 24
#define USAGE_GAP 2
-int usage_with_options_internal(const char * const *usagestr,
+static int usage_with_options_internal(const char * const *usagestr,
const struct option *opts, int full)
{
+ if (!usagestr)
+ return PARSE_OPT_HELP;
+
fprintf(stderr, "usage: %s\n", *usagestr++);
while (*usagestr && **usagestr)
fprintf(stderr, " or: %s\n", *usagestr++);
continue;
pos = fprintf(stderr, " ");
- if (opts->short_name)
- pos += fprintf(stderr, "-%c", opts->short_name);
+ if (opts->short_name && !(opts->flags & PARSE_OPT_NEGHELP)) {
+ if (opts->flags & PARSE_OPT_NODASH)
+ pos += fprintf(stderr, "%c", opts->short_name);
+ else
+ pos += fprintf(stderr, "-%c", opts->short_name);
+ }
if (opts->long_name && opts->short_name)
pos += fprintf(stderr, ", ");
if (opts->long_name)
- pos += fprintf(stderr, "--%s", opts->long_name);
+ pos += fprintf(stderr, "--%s%s",
+ (opts->flags & PARSE_OPT_NEGHELP) ? "no-" : "",
+ opts->long_name);
+ if (opts->type == OPTION_NUMBER)
+ pos += fprintf(stderr, "-NUM");
- switch (opts->type) {
- case OPTION_ARGUMENT:
- break;
- case OPTION_INTEGER:
- if (opts->flags & PARSE_OPT_OPTARG)
- if (opts->long_name)
- pos += fprintf(stderr, "[=<n>]");
- else
- pos += fprintf(stderr, "[<n>]");
- else
- pos += fprintf(stderr, " <n>");
- break;
- case OPTION_CALLBACK:
- if (opts->flags & PARSE_OPT_NOARG)
- break;
- /* FALLTHROUGH */
- case OPTION_STRING:
- if (opts->argh) {
- if (opts->flags & PARSE_OPT_OPTARG)
- if (opts->long_name)
- pos += fprintf(stderr, "[=<%s>]", opts->argh);
- else
- pos += fprintf(stderr, "[<%s>]", opts->argh);
- else
- pos += fprintf(stderr, " <%s>", opts->argh);
- } else {
- if (opts->flags & PARSE_OPT_OPTARG)
- if (opts->long_name)
- pos += fprintf(stderr, "[=...]");
- else
- pos += fprintf(stderr, "[...]");
- else
- pos += fprintf(stderr, " ...");
- }
- break;
- default: /* OPTION_{BIT,BOOLEAN,SET_INT,SET_PTR} */
- break;
- }
+ if (!(opts->flags & PARSE_OPT_NOARG))
+ pos += usage_argh(opts);
if (pos <= USAGE_OPTS_WIDTH)
pad = USAGE_OPTS_WIDTH - pos;
exit(129);
}
+void usage_msg_opt(const char *msg,
+ const char * const *usagestr,
+ const struct option *options)
+{
+ fprintf(stderr, "%s\n\n", msg);
+ usage_with_options(usagestr, options);
+}
+
int parse_options_usage(const char * const *usagestr,
const struct option *opts)
{
commit_list_insert(commit, opt->value);
return 0;
}
-
-/*
- * This should really be OPTION_FILENAME type as a part of
- * parse_options that take prefix to do this while parsing.
- */
-extern const char *parse_options_fix_filename(const char *prefix, const char *file)
-{
- if (!file || !prefix || is_absolute_path(file) || !strcmp("-", file))
- return file;
- return prefix_filename(prefix, strlen(prefix), file);
-}
-