COMMON: Add Common::parseBool

svn-id: r48566

2 files changed, 33 insertions, 0 deletions

diff --git a/common/util.cpp b/common/util.cpp
index 518c6a70b8..19e727d672 100644
--- a/common/util.cpp
+++ b/common/util.cpp
@@ -84,6 +84,27 @@ void hexdump(const byte * data, int len, int bytesPerLine, int startOffset) {
 #pragma mark -
 
 
+bool parseBool(const Common::String &val, bool &valAsBool) {
+	if (val.equalsIgnoreCase("true") ||
+		val.equalsIgnoreCase("yes") ||
+		val.equals("1")) {
+		valAsBool = true;
+		return true;
+	}
+	if (val.equalsIgnoreCase("false") ||
+		val.equalsIgnoreCase("no") ||
+		val.equals("0")) {
+		valAsBool = false;
+		return true;
+	}
+
+	return false;
+}
+
+
+#pragma mark -
+
+
 const LanguageDescription g_languages[] = {
 	{"zh-cn", "Chinese (China)", ZH_CNA},
 	{"zh", "Chinese (Taiwan)", ZH_TWN},
diff --git a/common/util.h b/common/util.h
index 3969945271..865f5e6217 100644
--- a/common/util.h
+++ b/common/util.h
@@ -77,6 +77,18 @@ extern void hexdump(const byte * data, int len, int bytesPerLine = 16, int start
 
 
 /**
+ * Parse a string for a boolean value.
+ * The strings "true", "yes", and "1" are interpreted as true.
+ * The strings "false", "no", and "0" are interpreted as false.
+ * This function ignores case.
+ *
+ * @param[in] val			the string to parse
+ * @param[out] valAsBool	the parsing result
+ * @return 	true if the string parsed correctly, false if an error occurred.
+ */
+bool parseBool(const Common::String &val, bool &valAsBool);
+
+/**
  * List of game language.
  */
 enum Language {