conf: added config_get_block_string()

This replaces lots of getBlockParam() invocations.

11 files changed, 95 insertions, 98 deletions

diff --git a/src/conf.c b/src/conf.c
index a073f32a..73990d45 100644
--- a/src/conf.c
+++ b/src/conf.c
@@ -445,6 +445,18 @@ bool config_get_bool(const char *name, bool default_value)
 	return !!value;
 }
 
+const char *
+config_get_block_string(struct config_param *param, const char *name,
+			const char *default_value)
+{
+	struct block_param *bp = getBlockParam(param, name);
+
+	if (bp == NULL)
+		return default_value;
+
+	return bp->value;
+}
+
 bool
 config_get_block_bool(struct config_param *param, const char *name,
 		      bool default_value)
diff --git a/src/conf.h b/src/conf.h
index dda328ba..3026c957 100644
--- a/src/conf.h
+++ b/src/conf.h
@@ -114,6 +114,17 @@ getBlockParam(struct config_param *param, const char *name);
 
 bool config_get_bool(const char *name, bool default_value);
 
+const char *
+config_get_block_string(struct config_param *param, const char *name,
+			const char *default_value);
+
+static inline char *
+config_dup_block_string(struct config_param *param, const char *name,
+			const char *default_value)
+{
+	return g_strdup(config_get_block_string(param, name, default_value));
+}
+
 bool
 config_get_block_bool(struct config_param *param, const char *name,
 		      bool default_value);
diff --git a/src/mixer/alsa_mixer.c b/src/mixer/alsa_mixer.c
index 72924058..7dafd22c 100644
--- a/src/mixer/alsa_mixer.c
+++ b/src/mixer/alsa_mixer.c
@@ -46,18 +46,21 @@ static void
 alsa_mixer_configure(struct mixer_data *data, struct config_param *param)
 {
 	struct alsa_mixer *am = (struct alsa_mixer *)data;
-	struct block_param *bp;
+	const char *value;
 
 	if (param == NULL)
 		return;
 
-	if ((bp = getBlockParam(param, "mixer_device"))) {
+	value = config_get_block_string(param, "mixer_device", NULL);
+	if (value != NULL) {
 		g_free(am->device);
-		am->device = g_strdup(bp->value);
+		am->device = g_strdup(value);
 	}
-	if ((bp = getBlockParam(param, "mixer_control"))) {
+
+	value = config_get_block_string(param, "mixer_control", NULL);
+	if (value != NULL) {
 		g_free(am->control);
-		am->control = g_strdup(bp->value);
+		am->control = g_strdup(value);
 	}
 }
 
diff --git a/src/mixer/oss_mixer.c b/src/mixer/oss_mixer.c
index 0ee44a69..5e3b65f4 100644
--- a/src/mixer/oss_mixer.c
+++ b/src/mixer/oss_mixer.c
@@ -50,21 +50,21 @@ static void
 oss_mixer_configure(struct mixer_data *data, struct config_param *param)
 {
 	struct oss_mixer *om = (struct oss_mixer *) data;
-	struct block_param *bp;
+	const char *value;
 
 	if (param == NULL)
 		return;
 
-	bp = getBlockParam(param, "mixer_device");
-	if (bp) {
+	value = config_get_block_string(param, "mixer_device", NULL);
+	if (value != NULL) {
 		g_free(om->device);
-		om->device = g_strdup(bp->value);
+		om->device = g_strdup(value);
 	}
 
-	bp = getBlockParam(param, "mixer_control");
-	if (bp) {
+	value = config_get_block_string(param, "mixer_control", NULL);
+	if (value != NULL) {
 		g_free(om->control);
-		om->control = g_strdup(bp->value);
+		om->control = g_strdup(value);
 	}
 }
 
diff --git a/src/output/alsa_plugin.c b/src/output/alsa_plugin.c
index 8034169b..0dc357ff 100644
--- a/src/output/alsa_plugin.c
+++ b/src/output/alsa_plugin.c
@@ -92,8 +92,7 @@ alsa_configure(AlsaData *ad, struct config_param *param)
 {
 	struct block_param *bp;
 
-	if ((bp = getBlockParam(param, "device")))
-		ad->device = g_strdup(bp->value);
+	ad->device = config_dup_block_string(param, "device", NULL);
 
 	ad->useMmap = config_get_block_bool(param, "use_mmap", false);
 
diff --git a/src/output/ao_plugin.c b/src/output/ao_plugin.c
index 26962014..d20496e2 100644
--- a/src/output/ao_plugin.c
+++ b/src/output/ao_plugin.c
@@ -83,6 +83,7 @@ audioOutputAo_initDriver(struct audio_output *ao,
 	char *test;
 	AoData *ad = newAoData();
 	struct block_param *blockParam;
+	const char *value;
 
 	if ((blockParam = getBlockParam(param, "write_size"))) {
 		ad->writeSize = strtol(blockParam->value, &test, 10);
@@ -98,14 +99,12 @@ audioOutputAo_initDriver(struct audio_output *ao,
 	}
 	driverInitCount++;
 
-	blockParam = getBlockParam(param, "driver");
-
-	if (!blockParam || 0 == strcmp(blockParam->value, "default")) {
+	value = config_get_block_string(param, "driver", "default");
+	if (0 == strcmp(value, "default")) {
 		ad->driverId = ao_default_driver_id();
-	} else if ((ad->driverId = ao_driver_id(blockParam->value)) < 0) {
+	} else if ((ad->driverId = ao_driver_id(value)) < 0)
 		g_error("\"%s\" is not a valid ao driver at line %i\n",
-			blockParam->value, blockParam->line);
-	}
+			value, param->line);
 
 	if ((ai = ao_driver_info(ad->driverId)) == NULL) {
 		g_error("problems getting driver info for device defined at line %i\n"
@@ -115,9 +114,9 @@ audioOutputAo_initDriver(struct audio_output *ao,
 	g_debug("using ao driver \"%s\" for \"%s\"\n", ai->short_name,
 		audio_output_get_name(ao));
 
-	blockParam = getBlockParam(param, "options");
-	if (blockParam) {
-		gchar **options = g_strsplit(blockParam->value, ";", 0);
+	value = config_get_block_string(param, "options", NULL);
+	if (value != NULL) {
+		gchar **options = g_strsplit(value, ";", 0);
 
 		for (unsigned i = 0; options[i] != NULL; ++i) {
 			gchar **key_value = g_strsplit(options[i], "=", 2);
diff --git a/src/output/fifo_plugin.c b/src/output/fifo_plugin.c
index 01db714c..5d1f287b 100644
--- a/src/output/fifo_plugin.c
+++ b/src/output/fifo_plugin.c
@@ -164,19 +164,18 @@ static void *fifo_initDriver(G_GNUC_UNUSED struct audio_output *ao,
 			     struct config_param *param)
 {
 	FifoData *fd;
-	struct block_param *blockParam;
-	char *path;
+	char *value, *path;
 
-	blockParam = getBlockParam(param, "path");
-	if (!blockParam) {
+	value = config_dup_block_string(param, "path", NULL);
+	if (value == NULL)
 		g_error("No \"path\" parameter specified for fifo output "
 			"defined at line %i", param->line);
-	}
 
-	path = parsePath(blockParam->value);
+	path = parsePath(value);
+	g_free(value);
 	if (!path) {
 		g_error("Could not parse \"path\" parameter for fifo output "
-			"at line %i", blockParam->line);
+			"at line %i", param->line);
 	}
 
 	fd = newFifoData();
diff --git a/src/output/jack_plugin.c b/src/output/jack_plugin.c
index 5723a04c..224fcd34 100644
--- a/src/output/jack_plugin.c
+++ b/src/output/jack_plugin.c
@@ -186,6 +186,7 @@ mpd_jack_init(struct audio_output *ao,
 	      struct config_param *param)
 {
 	struct jack_data *jd;
+	const char *value;
 	struct block_param *bp;
 	char *endptr;
 	int val;
@@ -197,12 +198,13 @@ mpd_jack_init(struct audio_output *ao,
 	if (param == NULL)
 		return jd;
 
-	if ( (bp = getBlockParam(param, "ports")) ) {
-		char **ports = g_strsplit(bp->value, ",", 0);
+	value = config_get_block_string(param, "ports", NULL);
+	if (value != NULL) {
+		char **ports = g_strsplit(value, ",", 0);
 
 		if (ports[0] == NULL || ports[1] == NULL || ports[2] != NULL)
 			g_error("two port names expected in line %d",
-				bp->line);
+				param->line);
 
 		jd->output_ports[0] = ports[0];
 		jd->output_ports[1] = ports[1];
diff --git a/src/output/oss_plugin.c b/src/output/oss_plugin.c
index f6628075..e83a05c5 100644
--- a/src/output/oss_plugin.c
+++ b/src/output/oss_plugin.c
@@ -393,10 +393,11 @@ oss_initDriver(G_GNUC_UNUSED struct audio_output *audioOutput,
 	       struct config_param *param)
 {
 	if (param) {
-		struct block_param *bp = getBlockParam(param, "device");
-		if (bp) {
+		const char *device =
+			config_get_block_string(param, "device", NULL);
+		if (device != NULL) {
 			OssData *od = newOssData();
-			od->device = bp->value;
+			od->device = device;
 			mixer_configure(&od->mixer, param);
 			return od;
 		}
diff --git a/src/output/pulse_plugin.c b/src/output/pulse_plugin.c
index 7d746378..45710b4a 100644
--- a/src/output/pulse_plugin.c
+++ b/src/output/pulse_plugin.c
@@ -57,19 +57,14 @@ pulse_init(struct audio_output *ao,
 	   G_GNUC_UNUSED const struct audio_format *audio_format,
 	   struct config_param *param)
 {
-	struct block_param *server = NULL;
-	struct block_param *sink = NULL;
 	struct pulse_data *pd;
 
-	if (param) {
-		server = getBlockParam(param, "server");
-		sink = getBlockParam(param, "sink");
-	}
-
 	pd = pulse_new_data();
 	pd->ao = ao;
-	pd->server = server != NULL ? g_strdup(server->value) : NULL;
-	pd->sink = sink != NULL ? g_strdup(sink->value) : NULL;
+	pd->server = param != NULL
+		? config_dup_block_string(param, "server", NULL) : NULL;
+	pd->sink = param != NULL
+		? config_dup_block_string(param, "sink", NULL) : NULL;
 
 	return pd;
 }
diff --git a/src/output/shout_plugin.c b/src/output/shout_plugin.c
index 7ca88599..069a0b30 100644
--- a/src/output/shout_plugin.c
+++ b/src/output/shout_plugin.c
@@ -106,6 +106,7 @@ static void *my_shout_init_driver(struct audio_output *audio_output,
 	unsigned protocol;
 	const char *user;
 	char *name;
+	const char *value;
 	struct block_param *block_param;
 	int public;
 
@@ -140,45 +141,34 @@ static void *my_shout_init_driver(struct audio_output *audio_output,
 
 	public = config_get_block_bool(param, "public", false);
 
-	block_param = getBlockParam(param, "user");
-	if (block_param)
-		user = block_param->value;
-	else
-		user = "source";
+	user = config_get_block_string(param, "user", "source");
 
-	block_param = getBlockParam(param, "quality");
-
-	if (block_param) {
-		int line = block_param->line;
-
-		sd->quality = strtod(block_param->value, &test);
+	value = config_get_block_string(param, "quality", NULL);
+	if (value != NULL) {
+		sd->quality = strtod(value, &test);
 
 		if (*test != '\0' || sd->quality < -1.0 || sd->quality > 10.0) {
 			g_error("shout quality \"%s\" is not a number in the "
-				"range -1 to 10, line %i\n", block_param->value,
-				block_param->line);
+				"range -1 to 10, line %i",
+				value, param->line);
 		}
 
-		block_param = getBlockParam(param, "bitrate");
-
-		if (block_param) {
-			g_error("quality (line %i) and bitrate (line %i) are "
-				"both defined for shout output\n", line,
-				block_param->line);
+		if (config_get_block_string(param, "bitrate", NULL) != NULL) {
+			g_error("quality and bitrate are "
+				"both defined for shout output (line %i)",
+				param->line);
 		}
 	} else {
-		block_param = getBlockParam(param, "bitrate");
-
-		if (!block_param) {
+		value = config_get_block_string(param, "bitrate", NULL);
+		if (value == NULL)
 			g_error("neither bitrate nor quality defined for shout "
-				"output at line %i\n", param->line);
-		}
+				"output at line %i", param->line);
 
-		sd->bitrate = strtol(block_param->value, &test, 10);
+		sd->bitrate = strtol(value, &test, 10);
 
 		if (*test != '\0' || sd->bitrate <= 0) {
 			g_error("bitrate at line %i should be a positive integer "
-				"\n", block_param->line);
+				"\n", param->line);
 		}
 	}
 
@@ -187,42 +177,29 @@ static void *my_shout_init_driver(struct audio_output *audio_output,
 	assert(audio_format != NULL);
 	sd->audio_format = *audio_format;
 
-	block_param = getBlockParam(param, "encoding");
-	if (block_param) {
-		if (0 == strcmp(block_param->value, "mp3"))
-			encoding = block_param->value;
-		else if (0 == strcmp(block_param->value, "ogg"))
-			encoding = block_param->value;
-		else
-			g_error("shout encoding \"%s\" is not \"ogg\" or "
-				"\"mp3\", line %i\n", block_param->value,
-				block_param->line);
-	} else {
-		encoding = "ogg";
-	}
-
+	encoding = config_get_block_string(param, "encoding", "ogg");
 	sd->encoder = shout_encoder_plugin_get(encoding);
 	if (sd->encoder == NULL)
 		g_error("couldn't find shout encoder plugin \"%s\"\n",
 			encoding);
 
-	block_param = getBlockParam(param, "protocol");
-	if (block_param) {
-		if (0 == strcmp(block_param->value, "shoutcast") &&
+	value = config_get_block_string(param, "protocol", NULL);
+	if (value != NULL) {
+		if (0 == strcmp(value, "shoutcast") &&
 		    0 != strcmp(encoding, "mp3"))
 			g_error("you cannot stream \"%s\" to shoutcast, use mp3\n",
 				encoding);
-		else if (0 == strcmp(block_param->value, "shoutcast"))
+		else if (0 == strcmp(value, "shoutcast"))
 			protocol = SHOUT_PROTOCOL_ICY;
-		else if (0 == strcmp(block_param->value, "icecast1"))
+		else if (0 == strcmp(value, "icecast1"))
 			protocol = SHOUT_PROTOCOL_XAUDIOCAST;
-		else if (0 == strcmp(block_param->value, "icecast2"))
+		else if (0 == strcmp(value, "icecast2"))
 			protocol = SHOUT_PROTOCOL_HTTP;
 		else
 			g_error("shout protocol \"%s\" is not \"shoutcast\" or "
 				"\"icecast1\"or "
-				"\"icecast2\", line %i\n", block_param->value,
-				block_param->line);
+				"\"icecast2\", line %i\n",
+				value, param->line);
 	} else {
 		protocol = SHOUT_PROTOCOL_HTTP;
 	}
@@ -253,15 +230,14 @@ static void *my_shout_init_driver(struct audio_output *audio_output,
 		}
 	}
 
-	block_param = getBlockParam(param, "genre");
-	if (block_param && shout_set_genre(sd->shout_conn, block_param->value)) {
+	value = config_get_block_string(param, "genre", NULL);
+	if (value != NULL && shout_set_genre(sd->shout_conn, value)) {
 		g_error("error configuring shout defined at line %i: %s\n",
 			param->line, shout_get_error(sd->shout_conn));
 	}
 
-	block_param = getBlockParam(param, "description");
-	if (block_param && shout_set_description(sd->shout_conn,
-						 block_param->value)) {
+	value = config_get_block_string(param, "description", NULL);
+	if (value != NULL && shout_set_description(sd->shout_conn, value)) {
 		g_error("error configuring shout defined at line %i: %s\n",
 			param->line, shout_get_error(sd->shout_conn));
 	}