/// <summary>
/// Serialize SourceMap object to json string with given serialize settings
/// </summary>
public string SerializeMapping(SourceMap sourceMap, JsonSerializerSettings jsonSerializerSettings = null)
{
if (sourceMap == null)
{
throw new ArgumentNullException(nameof(sourceMap));
}
string mappings = null;
if (sourceMap.ParsedMappings != null && sourceMap.ParsedMappings.Count > 0)
{
MappingGenerateState state = new MappingGenerateState(sourceMap.Names, sourceMap.Sources);
StringBuilder output = new StringBuilder();
foreach (MappingEntry entry in sourceMap.ParsedMappings)
{
SerializeMappingEntry(entry, state, output);
}
output.Append(';');
mappings = output.ToString();
}
SourceMap mapToSerialize = new SourceMap(
version: sourceMap.Version,
file: sourceMap.File,
mappings: mappings,
sources: sourceMap.Sources,
names: sourceMap.Names,
parsedMappings: default,
/// <summary>
/// Serialize SourceMap object to json string with given serialize settings
/// </summary>
public string SerializeMapping(SourceMap sourceMap, JsonSerializerSettings jsonSerializerSettings = null)
{
if (sourceMap == null)
{
throw new ArgumentNullException(nameof(sourceMap));
}
SourceMap mapToSerialize = new SourceMap()
{
File = sourceMap.File,
Names = sourceMap.Names,
Sources = sourceMap.Sources,
Version = sourceMap.Version,
SourcesContent = sourceMap.SourcesContent
};
if (sourceMap.ParsedMappings != null && sourceMap.ParsedMappings.Count > 0)
{
MappingGenerateState state = new MappingGenerateState(sourceMap.Names, sourceMap.Sources);
StringBuilder output = new StringBuilder();
foreach (MappingEntry entry in sourceMap.ParsedMappings)
{
SerializeMappingEntry(entry, state, output);
}
output.Append(';');
mapToSerialize.Mappings = output.ToString();
}
return(JsonConvert.SerializeObject(mapToSerialize,
jsonSerializerSettings ?? new JsonSerializerSettings
{
ContractResolver = new CamelCasePropertyNamesContractResolver(),
NullValueHandling = NullValueHandling.Ignore,
}));
}
/// <summary>
/// Convert each mapping entry to VLQ encoded segments
/// </summary>
internal void SerializeMappingEntry(MappingEntry entry, MappingGenerateState state, ICollection <char> output)
{
// Each line of generated code is separated using semicolons
while (entry.GeneratedSourcePosition.ZeroBasedLineNumber != state.LastGeneratedPosition.ZeroBasedLineNumber)
{
state.LastGeneratedPosition.ZeroBasedColumnNumber = 0;
state.LastGeneratedPosition.ZeroBasedLineNumber++;
state.IsFirstSegment = true;
output.Add(';');
}
// The V3 source map format calls for all Base64 VLQ segments to be seperated by commas.
if (!state.IsFirstSegment)
{
output.Add(',');
}
state.IsFirstSegment = false;
/*
* The following description was taken from the Sourcemap V3 spec https://docs.google.com/document/d/1U1RGAehQwRypUTovF1KRlpiOFze0b-_2gc6fAH0KY0k/mobilebasic?pref=2&pli=1
* The Sourcemap V3 spec is under a Creative Commons Attribution-ShareAlike 3.0 Unported License. https://creativecommons.org/licenses/by-sa/3.0/
*
* Each VLQ segment has 1, 4, or 5 variable length fields.
* The fields in each segment are:
* 1. The zero-based starting column of the line in the generated code that the segment represents.
* If this is the first field of the first segment, or the first segment following a new generated line(“;”),
* then this field holds the whole base 64 VLQ.Otherwise, this field contains a base 64 VLQ that is relative to
* the previous occurrence of this field.Note that this is different than the fields below because the previous
* value is reset after every generated line.
* 2. If present, an zero - based index into the “sources” list.This field is a base 64 VLQ relative to the previous
* occurrence of this field, unless this is the first occurrence of this field, in which case the whole value is represented.
* 3. If present, the zero-based starting line in the original source represented. This field is a base 64 VLQ relative to the
* previous occurrence of this field, unless this is the first occurrence of this field, in which case the whole value is
* represented.Always present if there is a source field.
* 4. If present, the zero - based starting column of the line in the source represented.This field is a base 64 VLQ relative to
* the previous occurrence of this field, unless this is the first occurrence of this field, in which case the whole value is
* represented.Always present if there is a source field.
* 5. If present, the zero - based index into the “names” list associated with this segment.This field is a base 64 VLQ relative
* to the previous occurrence of this field, unless this is the first occurrence of this field, in which case the whole value
* is represented.
*/
Base64VlqEncoder.Encode(output, entry.GeneratedSourcePosition.ZeroBasedColumnNumber - state.LastGeneratedPosition.ZeroBasedColumnNumber);
state.LastGeneratedPosition.ZeroBasedColumnNumber = entry.GeneratedSourcePosition.ZeroBasedColumnNumber;
if (entry.OriginalFileName != null)
{
int sourceIndex = state.Sources.IndexOf(entry.OriginalFileName);
if (sourceIndex < 0)
{
throw new SerializationException("Source map contains original source that cannot be found in provided sources array");
}
Base64VlqEncoder.Encode(output, sourceIndex - state.LastSourceIndex);
state.LastSourceIndex = sourceIndex;
Base64VlqEncoder.Encode(output, entry.OriginalSourcePosition.ZeroBasedLineNumber - state.LastOriginalPosition.ZeroBasedLineNumber);
state.LastOriginalPosition.ZeroBasedLineNumber = entry.OriginalSourcePosition.ZeroBasedLineNumber;
Base64VlqEncoder.Encode(output, entry.OriginalSourcePosition.ZeroBasedColumnNumber - state.LastOriginalPosition.ZeroBasedColumnNumber);
state.LastOriginalPosition.ZeroBasedColumnNumber = entry.OriginalSourcePosition.ZeroBasedColumnNumber;
if (entry.OriginalName != null)
{
int nameIndex = state.Names.IndexOf(entry.OriginalName);
if (nameIndex < 0)
{
throw new SerializationException("Source map contains original name that cannot be found in provided names array");
}
Base64VlqEncoder.Encode(output, nameIndex - state.LastNameIndex);
state.LastNameIndex = nameIndex;
}
}
}
