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ui-snapshot: add support for zstd compression

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This patch adds support for zstd [0] compressed snapshots (*.tar.zst).
We enable multiple working threads (-T0), but keep default compression
level. The latter can be influenced by environment variable.

[0] https://www.zstd.net/

Signed-off-by: Christian Hesse <mail@eworm.de>
This commit is contained in:
Christian Hesse 2020-02-26 09:12:21 +01:00 • committed by Jason A. Donenfeld
parent cc230bf044
commit 892ba8c3cc
4 changed files with 56 additions and 4 deletions
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7
ui-snapshot.c
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@ -91,6 +91,12 @@ static int write_tar_xz_archive(const char *hex, const char *prefix)
return write_compressed_tar_archive(hex, prefix, argv);
}
static int write_tar_zstd_archive(const char *hex, const char *prefix)
{
char *argv[] = { "zstd", "-T0", NULL };
return write_compressed_tar_archive(hex, prefix, argv);
}
const struct cgit_snapshot_format cgit_snapshot_formats[] = {
/* .tar must remain the 0 index */
{ ".tar", "application/x-tar", write_tar_archive },
@ -98,6 +104,7 @@ const struct cgit_snapshot_format cgit_snapshot_formats[] = {
{ ".tar.bz2", "application/x-bzip2", write_tar_bzip2_archive },
{ ".tar.lz", "application/x-lzip", write_tar_lzip_archive },
{ ".tar.xz", "application/x-xz", write_tar_xz_archive },
{ ".tar.zst", "application/x-zstd", write_tar_zstd_archive },
{ ".zip", "application/x-zip", write_zip_archive },
{ NULL }
};