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; }