Zig

Decompress Gzip Data In-Place Using BinData

See more Gzip Examples

This example demonstrates how to use the UncompressBd method to decompress Gzip data stored in a BinData object.

The compressed .gz file is first loaded into memory. The UncompressBd method then decompresses the data in-place, meaning the original compressed bytes in the BinData object are replaced with the uncompressed data.

After decompression, the example writes the resulting data to a file. This approach is useful when working entirely in memory before saving or further processing the uncompressed data.

Zig

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

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

    // This example demonstrates how to decompress Gzip data stored in a BinData object.
    // The decompression is done in-place, replacing the compressed data with the original data.

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

    // Load a .gz file into BinData:
    bd.loadFile("example.txt.gz") catch {
        std.debug.print("{s}\n", .{try bd.getLastErrorText(alloc)});
        return;
    };

    std.debug.print("Compressed size (bytes): {d}\n", .{bd.getNumBytes()});

    // Uncompress the data in-place:
    gzip.uncompressBd(bd) catch {
        std.debug.print("{s}\n", .{try gzip.getLastErrorText(alloc)});
        return;
    };

    std.debug.print("Decompressed size (bytes): {d}\n", .{bd.getNumBytes()});

    // Save the uncompressed data to a file:
    bd.writeFile("example.txt") catch {
        std.debug.print("{s}\n", .{try bd.getLastErrorText(alloc)});
        return;
    };

    std.debug.print("File successfully uncompressed to example.txt\n", .{});
}