*: use nullptr instead of NULL

src/Permission.cxx

@@ -101,7 +101,7 @@ initPermissions(const ConfigData &config)
 		const char *separator = strchr(param.value.c_str(),
 					       PERMISSION_PASSWORD_CHAR);
 
-		if (separator == NULL)
+		if (separator == nullptr)
 			throw FormatRuntimeError("\"%c\" not found in password string "
 						 "\"%s\", line %i",
 						 PERMISSION_PASSWORD_CHAR,

src/db/plugins/upnp/ContentDirectoryService.cxx

@@ -65,7 +65,7 @@ ContentDirectoryService::readDirSlice(UpnpClient_Handle hdl,
 
 	IXML_Document *response;
 	int code = UpnpSendAction(hdl, m_actionURL.c_str(), m_serviceType.c_str(),
-				  0 /*devUDN*/, request, &response);
+				  nullptr /*devUDN*/, request, &response);
 	if (code != UPNP_E_SUCCESS)
 		throw FormatRuntimeError("UpnpSendAction() failed: %s",
 					 UpnpGetErrorMessage(code));
@@ -124,7 +124,7 @@ ContentDirectoryService::search(UpnpClient_Handle hdl,
 		IXML_Document *_response;
 		auto code = UpnpSendAction(hdl, m_actionURL.c_str(),
 					   m_serviceType.c_str(),
-					   0 /*devUDN*/,
+					   nullptr /*devUDN*/,
 					   request.get(), &_response);
 		if (code != UPNP_E_SUCCESS)
 			throw FormatRuntimeError("UpnpSendAction() failed: %s",
@@ -170,7 +170,7 @@ ContentDirectoryService::getMetadata(UpnpClient_Handle hdl,
 	IXML_Document *_response;
 	auto code = UpnpSendAction(hdl, m_actionURL.c_str(),
 				   m_serviceType.c_str(),
-				   0 /*devUDN*/, request.get(), &_response);
+				   nullptr /*devUDN*/, request.get(), &_response);
 	if (code != UPNP_E_SUCCESS)
 		throw FormatRuntimeError("UpnpSendAction() failed: %s",
 					 UpnpGetErrorMessage(code));

src/input/plugins/AlsaInputPlugin.cxx

@@ -305,18 +305,18 @@ ConfigureCapture(snd_pcm_t *capture_handle,
 	snd_pcm_hw_params_get_buffer_size_min(hw_params, &buffer_size_min);
 	snd_pcm_hw_params_get_buffer_size_max(hw_params, &buffer_size_max);
 	unsigned buffer_time_min, buffer_time_max;
-	snd_pcm_hw_params_get_buffer_time_min(hw_params, &buffer_time_min, 0);
-	snd_pcm_hw_params_get_buffer_time_max(hw_params, &buffer_time_max, 0);
+	snd_pcm_hw_params_get_buffer_time_min(hw_params, &buffer_time_min, nullptr);
+	snd_pcm_hw_params_get_buffer_time_max(hw_params, &buffer_time_max, nullptr);
 	FormatDebug(alsa_input_domain, "buffer: size=%u..%u time=%u..%u",
 		    (unsigned)buffer_size_min, (unsigned)buffer_size_max,
 		    buffer_time_min, buffer_time_max);
 
 	snd_pcm_uframes_t period_size_min, period_size_max;
-	snd_pcm_hw_params_get_period_size_min(hw_params, &period_size_min, 0);
-	snd_pcm_hw_params_get_period_size_max(hw_params, &period_size_max, 0);
+	snd_pcm_hw_params_get_period_size_min(hw_params, &period_size_min, nullptr);
+	snd_pcm_hw_params_get_period_size_max(hw_params, &period_size_max, nullptr);
 	unsigned period_time_min, period_time_max;
-	snd_pcm_hw_params_get_period_time_min(hw_params, &period_time_min, 0);
-	snd_pcm_hw_params_get_period_time_max(hw_params, &period_time_max, 0);
+	snd_pcm_hw_params_get_period_time_min(hw_params, &period_time_min, nullptr);
+	snd_pcm_hw_params_get_period_time_max(hw_params, &period_time_max, nullptr);
 	FormatDebug(alsa_input_domain, "period: size=%u..%u time=%u..%u",
 		    (unsigned)period_size_min, (unsigned)period_size_max,
 		    period_time_min, period_time_max);

src/lib/alsa/HwSetup.cxx

@@ -238,18 +238,18 @@ SetupHw(snd_pcm_t *pcm,
 	snd_pcm_hw_params_get_buffer_size_min(hwparams, &buffer_size_min);
 	snd_pcm_hw_params_get_buffer_size_max(hwparams, &buffer_size_max);
 	unsigned buffer_time_min, buffer_time_max;
-	snd_pcm_hw_params_get_buffer_time_min(hwparams, &buffer_time_min, 0);
-	snd_pcm_hw_params_get_buffer_time_max(hwparams, &buffer_time_max, 0);
+	snd_pcm_hw_params_get_buffer_time_min(hwparams, &buffer_time_min, nullptr);
+	snd_pcm_hw_params_get_buffer_time_max(hwparams, &buffer_time_max, nullptr);
 	FormatDebug(alsa_output_domain, "buffer: size=%u..%u time=%u..%u",
 		    (unsigned)buffer_size_min, (unsigned)buffer_size_max,
 		    buffer_time_min, buffer_time_max);
 
 	snd_pcm_uframes_t period_size_min, period_size_max;
-	snd_pcm_hw_params_get_period_size_min(hwparams, &period_size_min, 0);
-	snd_pcm_hw_params_get_period_size_max(hwparams, &period_size_max, 0);
+	snd_pcm_hw_params_get_period_size_min(hwparams, &period_size_min, nullptr);
+	snd_pcm_hw_params_get_period_size_max(hwparams, &period_size_max, nullptr);
 	unsigned period_time_min, period_time_max;
-	snd_pcm_hw_params_get_period_time_min(hwparams, &period_time_min, 0);
-	snd_pcm_hw_params_get_period_time_max(hwparams, &period_time_max, 0);
+	snd_pcm_hw_params_get_period_time_min(hwparams, &period_time_min, nullptr);
+	snd_pcm_hw_params_get_period_time_max(hwparams, &period_time_max, nullptr);
 	FormatDebug(alsa_output_domain, "period: size=%u..%u time=%u..%u",
 		    (unsigned)period_size_min, (unsigned)period_size_max,
 		    period_time_min, period_time_max);

src/lib/upnp/ContentDirectoryService.cxx

@@ -60,7 +60,7 @@ ContentDirectoryService::getSearchCapabilities(UpnpClient_Handle hdl) const
 	IXML_Document *_response;
 	auto code = UpnpSendAction(hdl, m_actionURL.c_str(),
 				   m_serviceType.c_str(),
-				   0 /*devUDN*/, request.get(), &_response);
+				   nullptr /*devUDN*/, request.get(), &_response);
 	if (code != UPNP_E_SUCCESS)
 		throw FormatRuntimeError("UpnpSendAction() failed: %s",
 					 UpnpGetErrorMessage(code));

src/mixer/MixerType.cxx

@@ -27,7 +27,7 @@
 MixerType
 mixer_type_parse(const char *input)
 {
-	assert(input != NULL);
+	assert(input != nullptr);
 
 	if (strcmp(input, "none") == 0 || strcmp(input, "disabled") == 0)
 		return MixerType::NONE;

src/output/State.cxx

@@ -70,7 +70,7 @@ audio_output_state_read(const char *line, MultipleOutputs &outputs)
 
 	name = endptr + 1;
 	auto *ao = outputs.FindByName(name);
-	if (ao == NULL) {
+	if (ao == nullptr) {
 		FormatDebug(output_domain,
 			    "Ignoring device state for '%s'", name);
 		return true;

src/unix/SignalHandlers.cxx

@@ -42,7 +42,7 @@ HandleShutdownSignal(void *ctx) noexcept
 static void
 x_sigaction(int signum, const struct sigaction *act)
 {
-	if (sigaction(signum, act, NULL) < 0)
+	if (sigaction(signum, act, nullptr) < 0)
 		throw MakeErrno("sigaction() failed");
 }
 

src/util/FormatString.cxx

@@ -28,7 +28,7 @@ FormatStringV(const char *fmt, va_list args) noexcept
 {
 	va_list tmp;
 	va_copy(tmp, args);
-	const int length = vsnprintf(NULL, 0, fmt, tmp);
+	const int length = vsnprintf(nullptr, 0, fmt, tmp);
 	va_end(tmp);
 
 	if (length <= 0)

test/DumpDatabase.cxx

@@ -112,7 +112,7 @@ try {
 	const char *const plugin_name = argv[2];
 
 	const DatabasePlugin *plugin = GetDatabasePluginByName(plugin_name);
-	if (plugin == NULL) {
+	if (plugin == nullptr) {
 		cerr << "No such database plugin: " << plugin_name << endl;
 		return EXIT_FAILURE;
 	}

test/dump_playlist.cxx

@@ -75,7 +75,7 @@ try {
 
 	InputStreamPtr is;
 	auto playlist = playlist_list_open_uri(uri, mutex);
-	if (playlist == NULL) {
+	if (playlist == nullptr) {
 		/* open the stream and wait until it becomes ready */
 
 		is = InputStream::OpenReady(uri, mutex);
@@ -83,7 +83,7 @@ try {
 		/* open the playlist */
 
 		playlist = playlist_list_open_stream(std::move(is), uri);
-		if (playlist == NULL) {
+		if (playlist == nullptr) {
 			fprintf(stderr, "Failed to open playlist\n");
 			return 2;
 		}
@@ -92,7 +92,7 @@ try {
 	/* dump the playlist */
 
 	std::unique_ptr<DetachedSong> song;
-	while ((song = playlist->NextSong()) != NULL) {
+	while ((song = playlist->NextSong()) != nullptr) {
 		printf("%s\n", song->GetURI());
 
 		const unsigned start_ms = song->GetStartTime().ToMS();

test/dump_rva2.cxx

@@ -70,7 +70,7 @@ try {
 	auto is = OpenLocalInputStream(path, mutex);
 
 	const auto tag = tag_id3_load(*is);
-	if (tag == NULL) {
+	if (tag == nullptr) {
 		fprintf(stderr, "No ID3 tag found\n");
 		return EXIT_FAILURE;
 	}

test/read_mixer.cxx

@@ -36,7 +36,7 @@ const FilterPlugin *
 filter_plugin_by_name(gcc_unused const char *name) noexcept
 {
 	assert(false);
-	return NULL;
+	return nullptr;
 }
 
 int main(int argc, gcc_unused char **argv)

test/read_tags.cxx

@@ -100,7 +100,7 @@ try {
 	const ScopeDecoderPluginsInit decoder_plugins_init({});
 
 	plugin = decoder_plugin_from_name(decoder_name);
-	if (plugin == NULL) {
+	if (plugin == nullptr) {
 		fprintf(stderr, "No such decoder: %s\n", decoder_name);
 		return EXIT_FAILURE;
 	}
@@ -117,7 +117,7 @@ try {
 	Mutex mutex;
 	InputStreamPtr is;
 
-	if (!success && plugin->scan_stream != NULL) {
+	if (!success && plugin->scan_stream != nullptr) {
 		is = InputStream::OpenReady(path, mutex);
 		success = plugin->ScanStream(*is, h);
 	}

test/run_encoder.cxx

@@ -55,7 +55,7 @@ try {
 	/* create the encoder */
 
 	const auto plugin = encoder_plugin_get(encoder_name);
-	if (plugin == NULL) {
+	if (plugin == nullptr) {
 		fprintf(stderr, "No such encoder: %s\n", encoder_name);
 		return EXIT_FAILURE;
 	}

test/run_filter.cxx

@@ -53,7 +53,7 @@ LoadFilter(const ConfigData &config, const char *name)
 {
 	const auto *param = config.FindBlock(ConfigBlockOption::AUDIO_FILTER,
 					     "name", name);
-	if (param == NULL)
+	if (param == nullptr)
 		throw FormatRuntimeError("No such configured filter: %s",
 					 name);
 

test/test_vorbis_encoder.cxx

@@ -41,7 +41,7 @@ try {
 	/* create the encoder */
 
 	const auto plugin = encoder_plugin_get("vorbis");
-	assert(plugin != NULL);
+	assert(plugin != nullptr);
 
 	ConfigBlock block;
 	block.AddBlockParam("quality", "5.0", -1);