Zig

GZip Create / Extract .gz File

See more Gzip Examples

Demonstrates how to compress a file to create a .gz (GZip) file.

Note: The .gz file format is a compressed file format. It contains a single file. The .gz file format is not an archive format (i.e. it does not contain a collection of files/directories such as with the .zip, .rar, or .tar file formats). GZip is often combined with TAR to create a .tgz (or .tar.gz).

Note: It is possible for a .gz to contain more than one file, but this is very uncommon.

Zig

const std = @import("std");
const chilkat = @import("chilkat");

pub fn main(init: std.process.Init) !void {
    const alloc = init.arena.allocator();

    var success: bool = false;

    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    const gzip = try chilkat.Gzip.init();
    defer gzip.deinit();

    // File-to-file GZip:
    // Compress "hamlet.xml" to create "hamlet.xml.gz";
    success = if (gzip.compressFile("hamlet.xml", "hamlet.xml.gz")) true else |_| false;
    if (!success) {
        std.debug.print("{s}\n", .{try gzip.getLastErrorText(alloc)});
        return;
    }

    // File-to-file ungzip
    // Decompress "hamlet.xml.gz" to create "hamletOut.xml";
    success = if (gzip.uncompressFile("hamlet.xml.gz", "hamletOut.xml")) true else |_| false;
    if (!success) {
        std.debug.print("{s}\n", .{try gzip.getLastErrorText(alloc)});
        return;
    }

    // File-to-string ungzip
    // Decompress the contents of a .gz directly to a string variable:
    // The 2nd argument indicates the charset of the character
    // data after it is decompressed.
    const xml_str = try gzip.uncompressFileToString(alloc, "hamlet.xml.gz", "utf-8");
    if (!success) {
        std.debug.print("{s}\n", .{try gzip.getLastErrorText(alloc)});
        return;
    }

    std.debug.print("{s}\n", .{xml_str});

    // The Chilkat GZip API provides much more flexibility than shown
    // here.  See the reference documentation at
    // http://www.chilkatsoft.com/refdoc for more information.
}