1 files changed, 130 insertions, 0 deletions
diff --git a/src/YamlDumper.js b/src/YamlDumper.js
new file mode 100644
index 0000000..ffc4e7d
--- /dev/null
+++ b/src/YamlDumper.js
@@ -0,0 +1,130 @@
+
+/**
+ * YamlDumper dumps JS variables to YAML strings.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+var YamlDumper = function(){};
+YamlDumper.prototype =
+{
+	/**
+	 * Dumps a JS value to YAML.
+	 *
+	 * @param	mixed	 input	The JS value
+	 * @param	integer inline The level where you switch to inline YAML
+	 * @param	integer indent The level o indentation indentation (used internally)
+	 *
+	 * @return string	The YAML representation of the JS value
+	 */
+	dump: function(input, inline, indent)
+	{
+		if ( inline == undefined ) inline = 0;
+		if ( indent == undefined ) indent = 0;
+		var output = '';
+		var prefix = indent ? this.strRepeat(' ', indent) : '';
+		var yaml;
+
+		if ( inline <= 0 || !this.isObject(input) || this.isEmpty(input) )
+		{
+			yaml = new YamlInline();
+			output += prefix + yaml.dump(input);
+		}
+		else
+		{
+			var isAHash = !this.arrayEquals(this.getKeys(input), this.range(0,input.length - 1));
+			var willBeInlined;
+			
+			for ( var key in input )
+			{
+				if ( input.hasOwnProperty(key) )
+				{
+					willBeInlined = inline - 1 <= 0 || !this.isObject(input[key]) || this.isEmpty(input[key]);
+					
+					if ( isAHash ) yaml = new YamlInline();
+					
+					output += 
+						prefix + '' +
+						(isAHash ? yaml.dump(key)+':' : '-') + '' +
+						(willBeInlined ? ' ' : "\n") + '' +
+						this.dump(input[key], inline - 1, (willBeInlined ? 0 : indent + 2)) + '' +
+						(willBeInlined ? "\n" : '');
+				}
+			}
+		}
+
+		return output;
+	},
+	
+	strRepeat: function(str /* String */, count /* Integer */)
+	{
+		var i;
+		var result = '';
+		for ( i = 0; i < count; i++ ) result += str;
+		return result;
+	},
+	
+	isObject: function(input)
+	{
+		return this.isDefined(input) && typeof(input) == 'object';
+	},
+	
+	isEmpty: function(input)
+	{
+		var ret = input == undefined || input == null || input == '' || input == 0 || input == "0" || input == false;
+		if ( !ret && typeof(input) == "object" && !(input instanceof Array)){
+			var propCount = 0;
+			for ( var key in input )
+				if ( input.hasOwnProperty(key) ) propCount++;
+			ret = !propCount;
+		}
+		return ret;
+	},
+	
+	isDefined: function(input)
+	{
+		return input != undefined && input != null;
+	},
+	
+	getKeys: function(tab)
+	{
+		var ret = [];
+		
+		for ( var name in tab )
+		{
+			if ( tab.hasOwnProperty(name) )
+			{
+				ret.push(name);
+			}
+		}
+		
+		return ret;
+	},
+	
+	range: function(start, end)
+	{
+		if ( start > end ) return [];
+		
+		var ret = [];
+		
+		for ( var i = start; i <= end; i++ )
+		{
+			ret.push(i);
+		}
+		
+		return ret;
+	},
+	
+	arrayEquals: function(a,b)
+	{
+		if ( a.length != b.length ) return false;
+		
+		var len = a.length;
+		
+		for ( var i = 0; i < len; i++ )
+		{
+			if ( a[i] != b[i] ) return false;
+		}
+		
+		return true;
+	}
+};