build.zig                                               |   2 +
 lib/std/compress/xz.zig                                 |   5 +
 lib/std/compress/xz/block.zig                           | 319 ++++++++++++++++
 lib/std/compress/xz/check.zig                           |   7 +
 lib/std/compress/xz/lzma.zig                            | 658 ++++++++++++++++++++++++++++++++
 lib/std/compress/xz/multibyte.zig                       |  23 ++
 lib/std/compress/xz/stream.zig                          | 136 +++++++
 lib/std/compress/xz/stream_test.zig                     |  80 ++++
 lib/std/compress/xz/testdata/good-0-empty.xz            | Bin 0 -> 32 bytes
 lib/std/compress/xz/testdata/good-0cat-empty.xz         | Bin 0 -> 64 bytes
 lib/std/compress/xz/testdata/good-0catpad-empty.xz      | Bin 0 -> 68 bytes
 lib/std/compress/xz/testdata/good-0pad-empty.xz         | Bin 0 -> 36 bytes
 lib/std/compress/xz/testdata/good-1-3delta-lzma2.xz     | Bin 0 -> 528 bytes
 lib/std/compress/xz/testdata/good-1-arm64-lzma2-1.xz    | Bin 0 -> 512 bytes
 lib/std/compress/xz/testdata/good-1-arm64-lzma2-2.xz    | Bin 0 -> 488 bytes
 lib/std/compress/xz/testdata/good-1-block_header-1.xz   | Bin 0 -> 72 bytes
 lib/std/compress/xz/testdata/good-1-block_header-2.xz   | Bin 0 -> 68 bytes
 lib/std/compress/xz/testdata/good-1-block_header-3.xz   | Bin 0 -> 68 bytes
 lib/std/compress/xz/testdata/good-1-check-crc32.xz      | Bin 0 -> 68 bytes
 lib/std/compress/xz/testdata/good-1-check-crc64.xz      | Bin 0 -> 72 bytes
 lib/std/compress/xz/testdata/good-1-check-none.xz       | Bin 0 -> 64 bytes
 lib/std/compress/xz/testdata/good-1-check-sha256.xz     | Bin 0 -> 96 bytes
 lib/std/compress/xz/testdata/good-1-delta-lzma2.tiff.xz | Bin 0 -> 51316 bytes
 lib/std/compress/xz/testdata/good-1-empty-bcj-lzma2.xz  | Bin 0 -> 52 bytes
 lib/std/compress/xz/testdata/good-1-lzma2-1.xz          | Bin 0 -> 424 bytes
 lib/std/compress/xz/testdata/good-1-lzma2-2.xz          | Bin 0 -> 424 bytes
 lib/std/compress/xz/testdata/good-1-lzma2-3.xz          | Bin 0 -> 408 bytes
 lib/std/compress/xz/testdata/good-1-lzma2-4.xz          | Bin 0 -> 464 bytes
 lib/std/compress/xz/testdata/good-1-lzma2-5.xz          | Bin 0 -> 52 bytes
 lib/std/compress/xz/testdata/good-1-sparc-lzma2.xz      | Bin 0 -> 612 bytes
 lib/std/compress/xz/testdata/good-1-x86-lzma2.xz        | Bin 0 -> 716 bytes
 lib/std/compress/xz/testdata/good-2-lzma2.xz            | Bin 0 -> 92 bytes
 32 files changed, 1230 insertions(+)