method

new

v1_8_7_72 - Show latest stable - 0 notes - Class: Zlib::GzipReader

new(p1) public

Creates a GzipReader object associated with io. The GzipReader object reads gzipped data from io, and parses/decompresses them. At least, io must have a read method that behaves same as the read method in IO class.

If the gzip file header is incorrect, raises an Zlib::GzipFile::Error exception.

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/*
 * call-seq: Zlib::GzipReader.new(io)
 *
 * Creates a GzipReader object associated with +io+. The GzipReader object reads
 * gzipped data from +io+, and parses/decompresses them.  At least, +io+ must have
 * a +read+ method that behaves same as the +read+ method in IO class.
 *
 * If the gzip file header is incorrect, raises an Zlib::GzipFile::Error
 * exception.
 */
static VALUE
rb_gzreader_initialize(obj, io)
    VALUE obj, io;
{
    struct gzfile *gz;
    int err;

    Data_Get_Struct(obj, struct gzfile, gz);

    /* this is undocumented feature of zlib */
    err = inflateInit2(&gz->z.stream, -MAX_WBITS);
    if (err != Z_OK) {
        raise_zlib_error(err, gz->z.stream.msg);
    }
    gz->io = io;
    ZSTREAM_READY(&gz->z);
    gzfile_read_header(gz);

    return obj;
}

new

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