Package Exports
- butils
This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (butils) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.
Readme
butils
These are some helper functions that appear to be significantly faster than core Buffer manipulation functions.
Functions included
- readInt(buffer, offset) -- (buffer.readInt8(offset))
- writeInt(buffer, int, offset) -- (buffer.writeInt8(int, offset))
- readInt32(buffer, offset) -- (buffer.readUInt32BE(offset))
- writeInt32(buffer, int, offset) -- (buffer.writeUInt32BE(int, offset))
- readString(buffer, start, end) -- (buffer.toString(start, end))
- writeString(buffer, str, offset) -- (Buffer.write(str, 'utf8', offset))
- readVarint(buffer, offset) -- (no equivalent)
- writeVarint(buffer, int, offset) -- (no equivalent)
Note that the Int32 functions are currently unsigned and big endian only, though I'd happily accept pull requests to add more functionality.
Benchmark
100,000,000 iterations of each function. (see bench.js)
- Buffer#writeInt8: 1225ms
- butils#writeInt: 166ms
- Buffer#readInt8: 761ms
- butils#readInt: 164ms
- Buffer#writeUInt32BE: 1544ms
- butils#writeInt32: 257ms
- Buffer#readUInt32BE: 1525ms
- butils#readInt32: 323ms
- Buffer#write: 45101ms
- butils#writeString: 2509ms
- Buffer#toString: 17505ms
- butils#readString: 7340ms
- butils#writeVarint: 1264ms
- butils#readVarint: 4777ms