Zlib.gunzip

Zlib.gunzip(src) → String

static VALUE
zlib_gunzip(VALUE klass, VALUE src)
{
    struct gzfile gz0;
    struct gzfile *gz = &gz0;
    int err;

    StringValue(src);

    gzfile_init(gz, &inflate_funcs, zlib_gunzip_end);
    err = inflateInit2(&gz->z.stream, -MAX_WBITS);
    if (err != Z_OK) {
        raise_zlib_error(err, gz->z.stream.msg);
    }
    gz->io = Qundef;
    gz->z.input = src;
    ZSTREAM_READY(&gz->z);
    return rb_ensure(zlib_gunzip_run, (VALUE)gz, zlib_gzip_ensure, (VALUE)gz);
}

Decode the given gzipped string.

This method is almost equivalent to the following code:

Example

def gunzip(string)
  sio = StringIO.new(string)
  gz = Zlib::GzipReader.new(sio, encoding: Encoding::ASCII_8BIT)
  gz.read
ensure
  gz&.close
end