private FileLocation MapLocation(FileLocation fileLocation)
{
try
{
JsMapFile jsMapFile = JsMapFile.CreateFromString(_FileSystem.ReadAllText(fileLocation.FullPath + ".map"));
if (jsMapFile != null)
{
JsMappingSegment mapping = jsMapFile.Mappings.Where(m => m.GeneratedLine == fileLocation.LineNumber).FirstOrDefault();
if (mapping != null)
{
return(new FileLocation(
fileLocation.Filename.Replace(jsMapFile.OutputFile, mapping.Source),
fileLocation.FullPath.Replace(jsMapFile.OutputFile, mapping.Source),
mapping.SourceStartingLine,
mapping.SourceStartingColumn));
}
}
}
catch (Exception e)
{
Debug.WriteLine(e.Message);
}
return(null);
}
private static IEnumerable <JsMappingSegment> ParseMappings(JsMapFile jsMapFile, string mappings)
{
int currentLine = 1;
int previousSourceIndex = 0;
int previousSourceStartingLine = 1;
int previousSourceStartingColumn = 1;
int previousSourceNameIndex = 0;
foreach (string mappingLine in mappings.Split(';'))
{
if (!String.IsNullOrEmpty(mappingLine))
{
int previousGeneratedColumn = 1;
foreach (string segment in mappingLine.Split(','))
{
int[] map = VLQDecode(segment);
JsMappingSegment mapping = new JsMappingSegment
{
GeneratedLine = currentLine,
GeneratedColumn = previousGeneratedColumn + map[0]
};
if (map.Length > 1)
{
previousSourceIndex += map[1];
mapping.Source = jsMapFile.SourceFiles[previousSourceIndex];
previousSourceStartingLine += map[2];
mapping.SourceStartingLine = previousSourceStartingLine;
previousSourceStartingColumn += map[3];
mapping.SourceStartingColumn = previousSourceStartingColumn;
if (map.Length > 4)
{
previousSourceNameIndex += map[4];
mapping.SourceName = jsMapFile.Names[previousSourceNameIndex];
}
}
yield return(mapping);
previousGeneratedColumn = mapping.GeneratedColumn;
}
}
currentLine++;
}
}
public static JsMapFile CreateFromString(string content)
{
try
{
JObject jObject = JObject.Parse(content);
JsMapFile mapFile = new JsMapFile
{
Version = (int)jObject.SelectToken("version"),
OutputFile = (string)jObject.SelectToken("file"),
SourceFiles = ((JArray)jObject.GetValue("sources")).Select(jt => (string)jt).ToArray(),
Names = ((JArray)jObject.GetValue("names")).Select(jt => (string)jt).ToArray()
};
mapFile.Mappings = ParseMappings(mapFile, (string)jObject.SelectToken("mappings"));
return(mapFile);
}
catch
{
}
return(null);
}
