conf: improved boolean config parameter handling from -ke

the force flag will issue FATAL() if an invalid value is
specified

git-svn-id: https://svn.musicpd.org/mpd/trunk@6857 09075e82-0dd4-0310-85a5-a0d7c8717e4f

6 files changed, 68 insertions, 34 deletions

diff --git a/src/conf.c b/src/conf.c
index d76d4ad9b..b93f7c561 100644
--- a/src/conf.c
+++ b/src/conf.c
@@ -50,6 +50,23 @@ typedef struct _configEntry {
 
 static List *configEntriesList;
 
+static int get_bool(const char *value)
+{
+	const char **x;
+	static const char *t[] = { "yes", "true", "1", NULL };
+	static const char *f[] = { "no", "false", "0", NULL };
+
+	for (x = t; *x; x++) {
+		if (!strcasecmp(*x, value))
+			return 1;
+	}
+	for (x = f; *x; x++) {
+		if (!strcasecmp(*x, value))
+			return 0;
+	}
+	return CONF_BOOL_INVALID;
+}
+
 static ConfigParam *newConfigParam(char *value, int line)
 {
 	ConfigParam *ret = xmalloc(sizeof(ConfigParam));
@@ -352,21 +369,6 @@ char *getConfigParamValue(char *name)
 	return param->value;
 }
 
-int getBoolConfigParam(char *name)
-{
-	ConfigParam *param;
-	
-	param = getConfigParam(name);
-	if (!param) return -1;
-
-	if (strcmp("yes", param->value) == 0) return 1;
-	else if (strcmp("no", param->value) == 0) return 0;
-
-	ERROR("%s is not \"yes\" or \"no\" on line %i\n", name, param->line);
-
-	return -2;
-}
-
 BlockParam *getBlockParam(ConfigParam * param, char *name)
 {
 	BlockParam *ret = NULL;
@@ -406,3 +408,35 @@ ConfigParam *parseConfigFilePath(char *name, int force)
 
 	return param;
 }
+
+int getBoolConfigParam(char *name, int force)
+{
+	int ret;
+	ConfigParam *param = getConfigParam(name);
+
+	if (!param)
+		return CONF_BOOL_UNSET;
+
+	ret = get_bool(param->value);
+	if (force && ret == CONF_BOOL_INVALID)
+		FATAL("%s is not a boolean value (yes, true, 1) or "
+		      "(no, false, 0) on line %i\n",
+		      name, param->line);
+	return ret;
+}
+
+int getBoolBlockParam(ConfigParam *param, char *name, int force)
+{
+	int ret;
+	BlockParam *bp = getBlockParam(param, name);
+
+	if (!bp)
+		return CONF_BOOL_UNSET;
+
+	ret = get_bool(bp->value);
+	if (force && ret == CONF_BOOL_INVALID)
+		FATAL("%s is not a boolean value (yes, true, 1) or "
+		      "(no, false, 0) on line %i\n", bp->value, bp->line);
+	return ret;
+}
+
diff --git a/src/conf.h b/src/conf.h
index f5ef07525..01337d349 100644
--- a/src/conf.h
+++ b/src/conf.h
@@ -64,6 +64,9 @@
 #define CONF_SAVE_ABSOLUTE_PATHS        "save_absolute_paths_in_playlists"
 #define CONF_GAPLESS_MP3_PLAYBACK	"gapless_mp3_playback"
 
+#define CONF_BOOL_UNSET         -1
+#define CONF_BOOL_INVALID       -2
+
 typedef struct _BlockParam {
 	char *name;
 	char *value;
@@ -90,10 +93,12 @@ ConfigParam *getNextConfigParam(char *name, ConfigParam * last);
 
 char *getConfigParamValue(char *name);
 
-int getBoolConfigParam(char *name);
-
 BlockParam *getBlockParam(ConfigParam * param, char *name);
 
 ConfigParam *parseConfigFilePath(char *name, int force);
 
+int getBoolConfigParam(char *name, int force);
+
+int getBoolBlockParam(ConfigParam *param, char *name, int force);
+
 #endif
diff --git a/src/inputPlugins/mp3_plugin.c b/src/inputPlugins/mp3_plugin.c
index 43783070d..dc9e04e5f 100644
--- a/src/inputPlugins/mp3_plugin.c
+++ b/src/inputPlugins/mp3_plugin.c
@@ -120,11 +120,10 @@ static signed long audio_linear_dither(unsigned int bits, mad_fixed_t sample,
 
 static int mp3_plugin_init(void)
 {
-	gaplessPlaybackEnabled = getBoolConfigParam(CONF_GAPLESS_MP3_PLAYBACK);
-	if (gaplessPlaybackEnabled == -1)
+	gaplessPlaybackEnabled = getBoolConfigParam(CONF_GAPLESS_MP3_PLAYBACK,
+	                                            1);
+	if (gaplessPlaybackEnabled == CONF_BOOL_UNSET)
 		gaplessPlaybackEnabled = DEFAULT_GAPLESS_MP3_PLAYBACK;
-	else if (gaplessPlaybackEnabled < 0)
-		exit(EXIT_FAILURE);
 	return 1;
 }
 
diff --git a/src/normalize.c b/src/normalize.c
index 504656c1d..ee21fc919 100644
--- a/src/normalize.c
+++ b/src/normalize.c
@@ -28,11 +28,9 @@ int normalizationEnabled;
 
 void initNormalization(void)
 {
-	normalizationEnabled = getBoolConfigParam(CONF_VOLUME_NORMALIZATION);
-	if (normalizationEnabled == -1)
+	normalizationEnabled = getBoolConfigParam(CONF_VOLUME_NORMALIZATION, 1);
+	if (normalizationEnabled == CONF_BOOL_UNSET)
 		normalizationEnabled = DEFAULT_VOLUME_NORMALIZATION;
-	else if (normalizationEnabled < 0)
-		exit(EXIT_FAILURE);
 
 	if (normalizationEnabled)
 		CompressCfg(0, ANTICLIP, TARGET, GAINMAX, GAINSMOOTH, BUCKETS);
diff --git a/src/playlist.c b/src/playlist.c
index 8b2bc1f42..f4fd02ce1 100644
--- a/src/playlist.c
+++ b/src/playlist.c
@@ -140,11 +140,11 @@ void initPlaylist(void)
 		}
 	}
 
-	playlist_saveAbsolutePaths = getBoolConfigParam(CONF_SAVE_ABSOLUTE_PATHS);
-	if (playlist_saveAbsolutePaths == -1)
-		playlist_saveAbsolutePaths = DEFAULT_PLAYLIST_SAVE_ABSOLUTE_PATHS;
-	else if (playlist_saveAbsolutePaths < 0)
-		exit(EXIT_FAILURE);
+	playlist_saveAbsolutePaths = getBoolConfigParam(
+	                                         CONF_SAVE_ABSOLUTE_PATHS, 1);
+	if (playlist_saveAbsolutePaths == CONF_BOOL_UNSET)
+		playlist_saveAbsolutePaths =
+		                         DEFAULT_PLAYLIST_SAVE_ABSOLUTE_PATHS;
 
 	playlist.songs = xmalloc(sizeof(Song *) * playlist_max_length);
 	playlist.songMod = xmalloc(sizeof(mpd_uint32) * playlist_max_length);
diff --git a/src/zeroconf.c b/src/zeroconf.c
index 1836c64ca..aab09143a 100644
--- a/src/zeroconf.c
+++ b/src/zeroconf.c
@@ -558,11 +558,9 @@ void initZeroconf(void)
 	const char *serviceName = SERVICE_NAME;
 	ConfigParam *param;
 
-	zeroconfEnabled = getBoolConfigParam(CONF_ZEROCONF_ENABLED);
-	if (zeroconfEnabled == -1)
+	zeroconfEnabled = getBoolConfigParam(CONF_ZEROCONF_ENABLED, 1);
+	if (zeroconfEnabled == CONF_BOOL_UNSET)
 		zeroconfEnabled = DEFAULT_ZEROCONF_ENABLED;
-	else if (zeroconfEnabled < 0)
-		exit(EXIT_FAILURE);
 
 	if (!zeroconfEnabled)
 		return;