#include <stdio.h>
#include <stdlib.h>
+#include <getopt.h>
#include "log.h"
#include "unit-name.h"
+#include "build.h"
+#include "strv.h"
-int main(int argc, char *argv[]) {
- char *escaped_name = NULL;
+static enum {
+ ACTION_ESCAPE,
+ ACTION_UNESCAPE,
+ ACTION_MANGLE
+} arg_action = ACTION_ESCAPE;
+static const char *arg_suffix = NULL;
+static const char *arg_template = NULL;
+static bool arg_path = false;
+
+static int help(void) {
+
+ printf("%s [OPTIONS...] [NAME...]\n\n"
+ "Show system and user paths.\n\n"
+ " -h --help Show this help\n"
+ " --version Show package version\n"
+ " --suffix=SUFFIX Unit suffix to append to escaped strings\n"
+ " --template=TEMPLATE Insert strings as instance into template\n"
+ " -u --unescape Unescape strings\n"
+ " -m --mangle Mangle strings\n"
+ " -p --path When escaping/unescaping assume the string is a path\n",
+ program_invocation_short_name);
+
+ return 0;
+}
+
+static int parse_argv(int argc, char *argv[]) {
+
+ enum {
+ ARG_VERSION = 0x100,
+ ARG_SUFFIX,
+ ARG_TEMPLATE
+ };
+
+ static const struct option options[] = {
+ { "help", no_argument, NULL, 'h' },
+ { "version", no_argument, NULL, ARG_VERSION },
+ { "suffix", required_argument, NULL, ARG_SUFFIX },
+ { "template", required_argument, NULL, ARG_TEMPLATE },
+ { "unescape", no_argument, NULL, 'u' },
+ { "mangle", no_argument, NULL, 'm' },
+ { "path", no_argument, NULL, 'p' },
+ {}
+ };
+
+ int c;
+
+ assert(argc >= 0);
+ assert(argv);
+
+ while ((c = getopt_long(argc, argv, "hump", options, NULL)) >= 0) {
+
+ switch (c) {
+
+ case 'h':
+ return help();
+
+ case ARG_VERSION:
+ puts(PACKAGE_STRING);
+ puts(SYSTEMD_FEATURES);
+ return 0;
+
+ case ARG_SUFFIX:
+
+ if (unit_type_from_string(optarg) < 0) {
+ log_error("Invalid unit suffix type %s.", optarg);
+ return -EINVAL;
+ }
+
+ arg_suffix = optarg;
+ break;
+
+ case ARG_TEMPLATE:
+
+ if (!unit_name_is_valid(optarg, true) || !unit_name_is_template(optarg)) {
+ log_error("Template name %s is not valid.", optarg);
+ return -EINVAL;
+ }
+
+ arg_template = optarg;
+ break;
+
+ case 'u':
+ arg_action = ACTION_UNESCAPE;
+ break;
+
+ case 'm':
+ arg_action = ACTION_MANGLE;
+ break;
+
+ case 'p':
+ arg_path = true;
+ break;
+
+ case '?':
+ return -EINVAL;
+
+ default:
+ assert_not_reached("Unhandled option");
+ }
+ }
- if (argc != 2) {
- log_error("This program requires on argument.");
- return EXIT_FAILURE;
+ if (optind >= argc) {
+ log_error("Not enough arguments.");
+ return -EINVAL;
}
- escaped_name = unit_name_escape(argv[1]);
+ if (arg_template && arg_suffix) {
+ log_error("--suffix= and --template= may not be combined.");
+ return -EINVAL;
+ }
+
+ if ((arg_template || arg_suffix) && arg_action != ACTION_ESCAPE) {
+ log_error("--suffix= and --template= are not compatible with --unescape or --mangle.");
+ return -EINVAL;
+ }
+
+ if (arg_path && !IN_SET(arg_action, ACTION_ESCAPE, ACTION_UNESCAPE)) {
+ log_error("--path may not be combined with --mangle.");
+ return -EINVAL;
+ }
+
+ return 1;
+}
+
+int main(int argc, char *argv[]) {
+ char **i;
+ int r;
+
+ log_parse_environment();
+ log_open();
+
+ r = parse_argv(argc, argv);
+ if (r <= 0)
+ goto finish;
+
+ STRV_FOREACH(i, argv + optind) {
+ _cleanup_free_ char *e = NULL;
+
+ switch (arg_action) {
+
+ case ACTION_ESCAPE:
+ if (arg_path)
+ e = unit_name_path_escape(*i);
+ else
+ e = unit_name_escape(*i);
+
+ if (!e) {
+ r = log_oom();
+ goto finish;
+ }
+
+ if (arg_template) {
+ char *x;
+
+ x = unit_name_replace_instance(arg_template, e);
+ if (!x) {
+ r = log_oom();
+ goto finish;
+ }
+
+ free(e);
+ e = x;
+ } else if (arg_suffix) {
+ char *x;
+
+ x = strjoin(e, ".", arg_suffix, NULL);
+ if (!x) {
+ r = log_oom();
+ goto finish;
+ }
+
+ free(e);
+ e = x;
+ }
+
+ break;
+
+ case ACTION_UNESCAPE:
+ if (arg_path)
+ e = unit_name_path_unescape(*i);
+ else
+ e = unit_name_unescape(*i);
+
+ if (!e) {
+ r = log_oom();
+ goto finish;
+ }
+ break;
+
+ case ACTION_MANGLE:
+ e = unit_name_mangle(*i, MANGLE_NOGLOB);
+ if (!e) {
+ r = log_oom();
+ goto finish;
+ }
+ break;
+ }
+
+ if (i != argv+optind)
+ fputc(' ', stdout);
- if (!escaped_name) {
- log_error("Failed to escape name.");
- return EXIT_FAILURE;
+ fputs(e, stdout);
}
- printf("%s", escaped_name);
+ fputc('\n', stdout);
- return EXIT_SUCCESS;
+finish:
+ return r ? EXIT_FAILURE : EXIT_SUCCESS;
}
~ianmdlvl / elogind.git / blobdiff