Function decode [src]

Decodes frames from src into dest; returns the length of the result. The stream should not have extra trailing bytes - either all bytes in src will be decoded, or an error will be returned. An error will be returned if a Zstandard frame in src does not declare its content size. Errors returned: error.DictionaryIdFlagUnsupported if a src contains a frame that uses a dictionary error.MalformedFrame if a frame in src is invalid error.UnknownContentSizeUnsupported if a frame in src does not declare its content size

Prototype

 pub fn decode(dest: []u8, src: []const u8, verify_checksum: bool) error{ MalformedFrame, UnknownContentSizeUnsupported, DictionaryIdFlagUnsupported, }!usize

Parameters

dest: []u8src: []const u8verify_checksum: bool

Possible Errors

DictionaryIdFlagUnsupported

MalformedFrame

UnknownContentSizeUnsupported

Source

  pub fn decode(dest: []u8, src: []const u8, verify_checksum: bool) error{
    MalformedFrame,
    UnknownContentSizeUnsupported,
    DictionaryIdFlagUnsupported,
}!usize {
    var write_count: usize = 0;
    var read_count: usize = 0;
    while (read_count < src.len) {
        const counts = decodeFrame(dest, src[read_count..], verify_checksum) catch |err| {
            switch (err) {
                error.UnknownContentSizeUnsupported => return error.UnknownContentSizeUnsupported,
                error.DictionaryIdFlagUnsupported => return error.DictionaryIdFlagUnsupported,
                else => return error.MalformedFrame,
            }
        };
        read_count += counts.read_count;
        write_count += counts.write_count;
    }
    return write_count;
}  