void parse_options_start(struct parse_opt_ctx_t *ctx,
int argc, const char **argv, const char *prefix,
const struct option *options, 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");
parse_options_check(options);
}
int parse_options_step(struct parse_opt_ctx_t *ctx,
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;
for (; ctx->argc; ctx->argc--, ctx->argv++) {
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];
continue;
}
if (arg[1] != '-') {
ctx->opt = arg + 1;
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:
goto unknown;
}
if (ctx->opt)
check_typos(arg + 1, options);
while (ctx->opt) {
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:
/* fake a short option thing to hide the fact that we may have
* started to parse aggregated stuff
*
* This is leaky, too bad.
*/
ctx->argv[0] = xstrdup(ctx->opt - 1);
*(char *)ctx->argv[0] = '-';
goto unknown;
}
}
continue;
}
if (!arg[2]) { /* "--" */
if (!(ctx->flags & PARSE_OPT_KEEP_DASHDASH)) {
ctx->argc--;
ctx->argv++;
}
break;
}
if (internal_help && !strcmp(arg + 2, "help-all"))
return usage_with_options_internal(usagestr, options, 1);
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:
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;
}
