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-rw-r--r--src/CommandLine.cxx220
1 files changed, 139 insertions, 81 deletions
diff --git a/src/CommandLine.cxx b/src/CommandLine.cxx
index 05f0a358c..6c0f7e6a1 100644
--- a/src/CommandLine.cxx
+++ b/src/CommandLine.cxx
@@ -36,6 +36,8 @@
#include "fs/FileSystem.hxx"
#include "util/Error.hxx"
#include "util/Domain.hxx"
+#include "util/OptionDef.hxx"
+#include "util/OptionParser.hxx"
#include "system/FatalError.hxx"
#ifdef ENABLE_ENCODER
@@ -61,6 +63,25 @@
#define USER_CONFIG_FILE_LOCATION_XDG "mpd/mpd.conf"
#endif
+static const OptionDef opt_kill(
+ "kill", "kill the currently running mpd session");
+static const OptionDef opt_no_config(
+ "no-config", "don't read from config");
+static const OptionDef opt_no_daemon(
+ "no-daemon", "don't detach from console");
+static const OptionDef opt_stdout(
+ "stdout", nullptr); // hidden, compatibility with old versions
+static const OptionDef opt_stderr(
+ "stderr", "print messages to stderr");
+static const OptionDef opt_verbose(
+ "verbose", 'v', "verbose logging");
+static const OptionDef opt_version(
+ "version", 'V', "print version number");
+static const OptionDef opt_help(
+ "help", 'h', "show help options");
+static const OptionDef opt_help_alt(
+ nullptr, '?', nullptr); // hidden, standard alias for --help
+
static constexpr Domain cmdline_domain("cmdline");
gcc_noreturn
@@ -132,8 +153,39 @@ static void version(void)
exit(EXIT_SUCCESS);
}
-static const char *summary =
- "Music Player Daemon - a daemon for playing music.";
+static void PrintOption(const OptionDef &opt)
+{
+ if (opt.HasShortOption())
+ printf(" -%c, --%-12s%s\n",
+ opt.GetShortOption(),
+ opt.GetLongOption(),
+ opt.GetDescription());
+ else
+ printf(" --%-16s%s\n",
+ opt.GetLongOption(),
+ opt.GetDescription());
+}
+
+gcc_noreturn
+static void help(void)
+{
+ puts("Usage:\n"
+ " mpd [OPTION...] [path/to/mpd.conf]\n"
+ "\n"
+ "Music Player Daemon - a daemon for playing music.\n"
+ "\n"
+ "Options:");
+
+ PrintOption(opt_help);
+ PrintOption(opt_kill);
+ PrintOption(opt_no_config);
+ PrintOption(opt_no_daemon);
+ PrintOption(opt_stderr);
+ PrintOption(opt_verbose);
+ PrintOption(opt_version);
+
+ exit(EXIT_SUCCESS);
+}
gcc_pure
static AllocatedPath
@@ -149,105 +201,111 @@ bool
parse_cmdline(int argc, char **argv, struct options *options,
Error &error)
{
- GOptionContext *context;
- bool ret;
- static gboolean option_version,
- option_no_daemon,
- option_no_config;
- const GOptionEntry entries[] = {
- { "kill", 0, 0, G_OPTION_ARG_NONE, &options->kill,
- "kill the currently running mpd session", nullptr },
- { "no-config", 0, 0, G_OPTION_ARG_NONE, &option_no_config,
- "don't read from config", nullptr },
- { "no-daemon", 0, 0, G_OPTION_ARG_NONE, &option_no_daemon,
- "don't detach from console", nullptr },
- { "stdout", 0, 0, G_OPTION_ARG_NONE, &options->log_stderr,
- nullptr, nullptr },
- { "stderr", 0, 0, G_OPTION_ARG_NONE, &options->log_stderr,
- "print messages to stderr", nullptr },
- { "verbose", 'v', 0, G_OPTION_ARG_NONE, &options->verbose,
- "verbose logging", nullptr },
- { "version", 'V', 0, G_OPTION_ARG_NONE, &option_version,
- "print version number", nullptr },
- { nullptr, 0, 0, G_OPTION_ARG_NONE, nullptr, nullptr, nullptr }
- };
-
+ bool use_config_file = true;
options->kill = false;
options->daemon = true;
options->log_stderr = false;
options->verbose = false;
- context = g_option_context_new("[path/to/mpd.conf]");
- g_option_context_add_main_entries(context, entries, nullptr);
-
- g_option_context_set_summary(context, summary);
-
- GError *gerror = nullptr;
- ret = g_option_context_parse(context, &argc, &argv, &gerror);
- g_option_context_free(context);
-
- if (!ret)
- FatalError("option parsing failed", gerror);
+ // First pass: handle command line options
+ OptionParser parser(argc, argv);
+ while (parser.HasEntries()) {
+ if (!parser.ParseNext())
+ continue;
+ if (parser.CheckOption(opt_kill)) {
+ options->kill = true;
+ continue;
+ }
+ if (parser.CheckOption(opt_no_config)) {
+ use_config_file = false;
+ continue;
+ }
+ if (parser.CheckOption(opt_no_daemon)) {
+ options->daemon = false;
+ continue;
+ }
+ if (parser.CheckOption(opt_stderr, opt_stdout)) {
+ options->log_stderr = true;
+ continue;
+ }
+ if (parser.CheckOption(opt_verbose)) {
+ options->verbose = true;
+ continue;
+ }
+ if (parser.CheckOption(opt_version))
+ version();
+ if (parser.CheckOption(opt_help, opt_help_alt))
+ help();
- if (option_version)
- version();
+ error.Format(cmdline_domain, "invalid option: %s",
+ parser.GetOption());
+ return false;
+ }
/* initialize the logging library, so the configuration file
parser can use it already */
log_early_init(options->verbose);
- options->daemon = !option_no_daemon;
-
- if (option_no_config) {
+ if (!use_config_file) {
LogDebug(cmdline_domain,
"Ignoring config, using daemon defaults");
return true;
- } else if (argc <= 1) {
- /* default configuration file path */
-
-#ifdef WIN32
- AllocatedPath path = PathBuildChecked(AllocatedPath::FromUTF8(g_get_user_config_dir()),
- CONFIG_FILE_LOCATION);
- if (!path.IsNull() && FileExists(path))
- return ReadConfigFile(path, error);
-
- const char *const*system_config_dirs =
- g_get_system_config_dirs();
+ }
- for (unsigned i = 0; system_config_dirs[i] != nullptr; ++i) {
- path = PathBuildChecked(AllocatedPath::FromUTF8(system_config_dirs[i]),
- CONFIG_FILE_LOCATION);
- if (!path.IsNull() && FileExists(path))
- return ReadConfigFile(path, error);
+ // Second pass: find non-option parameters (i.e. config file)
+ const char *config_file = nullptr;
+ for (int i = 1; i < argc; ++i) {
+ if (OptionParser::IsOption(argv[i]))
+ continue;
+ if (config_file == nullptr) {
+ config_file = argv[i];
+ continue;
}
-#else
- AllocatedPath path = PathBuildChecked(AllocatedPath::FromUTF8(g_get_user_config_dir()),
- USER_CONFIG_FILE_LOCATION_XDG);
- if (!path.IsNull() && FileExists(path))
- return ReadConfigFile(path, error);
+ error.Set(cmdline_domain, "too many arguments");
+ return false;
+ }
- path = PathBuildChecked(AllocatedPath::FromUTF8(g_get_home_dir()),
- USER_CONFIG_FILE_LOCATION1);
- if (!path.IsNull() && FileExists(path))
- return ReadConfigFile(path, error);
+ if (config_file != nullptr) {
+ /* use specified configuration file */
+ return ReadConfigFile(Path::FromFS(config_file), error);
+ }
- path = PathBuildChecked(AllocatedPath::FromUTF8(g_get_home_dir()),
- USER_CONFIG_FILE_LOCATION2);
- if (!path.IsNull() && FileExists(path))
- return ReadConfigFile(path, error);
+ /* use default configuration file path */
+#ifdef WIN32
+ AllocatedPath path = PathBuildChecked(AllocatedPath::FromUTF8(g_get_user_config_dir()),
+ CONFIG_FILE_LOCATION);
+ if (!path.IsNull() && FileExists(path))
+ return ReadConfigFile(path, error);
+
+ const char *const*system_config_dirs =
+ g_get_system_config_dirs();
- path = AllocatedPath::FromUTF8(SYSTEM_CONFIG_FILE_LOCATION);
+ for (unsigned i = 0; system_config_dirs[i] != nullptr; ++i) {
+ path = PathBuildChecked(AllocatedPath::FromUTF8(system_config_dirs[i]),
+ CONFIG_FILE_LOCATION);
if (!path.IsNull() && FileExists(path))
return ReadConfigFile(path, error);
-#endif
-
- error.Set(cmdline_domain, "No configuration file found");
- return false;
- } else if (argc == 2) {
- /* specified configuration file */
- return ReadConfigFile(Path::FromFS(argv[1]), error);
- } else {
- error.Set(cmdline_domain, "too many arguments");
- return false;
}
+#else
+ AllocatedPath path = PathBuildChecked(AllocatedPath::FromUTF8(g_get_user_config_dir()),
+ USER_CONFIG_FILE_LOCATION_XDG);
+ if (!path.IsNull() && FileExists(path))
+ return ReadConfigFile(path, error);
+
+ path = PathBuildChecked(AllocatedPath::FromUTF8(g_get_home_dir()),
+ USER_CONFIG_FILE_LOCATION1);
+ if (!path.IsNull() && FileExists(path))
+ return ReadConfigFile(path, error);
+
+ path = PathBuildChecked(AllocatedPath::FromUTF8(g_get_home_dir()),
+ USER_CONFIG_FILE_LOCATION2);
+ if (!path.IsNull() && FileExists(path))
+ return ReadConfigFile(path, error);
+
+ path = AllocatedPath::FromUTF8(SYSTEM_CONFIG_FILE_LOCATION);
+ if (!path.IsNull() && FileExists(path))
+ return ReadConfigFile(path, error);
+#endif
+ error.Set(cmdline_domain, "No configuration file found");
+ return false;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-15 16:04:05 +0000