zip (version 2.3.2)

deflate: Compress a raw GZIP stream

Description

Compress a raw GZIP stream

Usage

deflate(buffer, level = 6L, pos = 1L, size = NULL)

Value

Named list with three entries:

• output: raw vector, the compressed data,

• bytes_read: number of bytes used from buffer,

• bytes_written: number of bytes written to the output buffer.

Arguments

buffer

Raw vector, containing the data to compress.

level

Compression level, integer between 1 (fatest) and 9 (best).

pos

Start position of data to compress in buffer.

size

Compressed size estimate, or NULL. If not given, or too small, the output buffer is resized multiple times.

See Also

base::memCompress() does the same with type = "gzip", but it does not tell you the number of bytes read from the input.

Examples

data_gz <- deflate(charToRaw("Hello world!"))
inflate(data_gz$output)