Commit 53cb1f2d authored by Bartosz's avatar Bartosz

cmake: Teach cmake -E tar command, Zstandard compression

Fixes #18657
parent 0bf53483
......@@ -546,20 +546,23 @@ Available commands are:
Compress the resulting archive with bzip2.
``J``
Compress the resulting archive with XZ.
``--``
Stop interpreting options and treat all remaining arguments
as file names even if they start in ``-``.
``--zstd``
Compress the resulting archive with Zstandard.
``--files-from=<file>``
Read file names from the given file, one per line.
Blank lines are ignored. Lines may not start in ``-``
except for ``--add-file=<name>`` to add files whose
names start in ``-``.
``--mtime=<date>``
Specify modification time recorded in tarball entries.
``--format=<format>``
Specify the format of the archive to be created.
Supported formats are: ``7zip``, ``gnutar``, ``pax``,
``paxr`` (restricted pax, default), and ``zip``.
``--mtime=<date>``
Specify modification time recorded in tarball entries.
``--``
Stop interpreting options and treat all remaining arguments
as file names, even if they start with ``-``.
``time <command> [<args>...]``
Run command and display elapsed time.
......
Help/release/dev/cmake-e-tar-zstd-support
-----------------------------------------
* The :manual:`cmake(1)` ``-E tar`` tool now support Zstandard compression
algorithm with ``--zstd`` option. Zstandard was designed to give
a compression ratio comparable to that of the DEFLATE (zip) algorithm,
but faster, especially for decompression.
......@@ -137,6 +137,13 @@ cmArchiveWrite::cmArchiveWrite(std::ostream& os, Compress c,
return;
}
break;
case CompressZstd:
if (archive_write_add_filter_zstd(this->Archive) != ARCHIVE_OK) {
this->Error = "archive_write_add_filter_zstd: ";
this->Error += cm_archive_error_string(this->Archive);
return;
}
break;
}
#if !defined(_WIN32) || defined(__CYGWIN__)
if (archive_read_disk_set_standard_lookup(this->Disk) != ARCHIVE_OK) {
......
......@@ -49,7 +49,8 @@ public:
CompressGZip,
CompressBZip2,
CompressLZMA,
CompressXZ
CompressXZ,
CompressZstd
};
/** Construct with output stream to which to write archive. */
......
......@@ -1614,6 +1614,9 @@ bool cmSystemTools::CreateTar(const char* outFileName,
case TarCompressXZ:
compress = cmArchiveWrite::CompressXZ;
break;
case TarCompressZstd:
compress = cmArchiveWrite::CompressZstd;
break;
case TarCompressNone:
compress = cmArchiveWrite::CompressNone;
break;
......
......@@ -451,6 +451,7 @@ public:
TarCompressGZip,
TarCompressBZip2,
TarCompressXZ,
TarCompressZstd,
TarCompressNone
};
......
......@@ -1043,11 +1043,17 @@ int cmcmd::ExecuteCMakeCommand(std::vector<std::string> const& args)
std::vector<std::string> files;
std::string mtime;
std::string format;
cmSystemTools::cmTarCompression compress =
cmSystemTools::TarCompressNone;
int nCompress = 0;
bool doing_options = true;
for (auto const& arg : cmMakeRange(args).advance(4)) {
if (doing_options && cmHasLiteralPrefix(arg, "--")) {
if (arg == "--") {
doing_options = false;
} else if (arg == "--zstd") {
compress = cmSystemTools::TarCompressZstd;
++nCompress;
} else if (cmHasLiteralPrefix(arg, "--mtime=")) {
mtime = arg.substr(8);
} else if (cmHasLiteralPrefix(arg, "--files-from=")) {
......@@ -1075,10 +1081,7 @@ int cmcmd::ExecuteCMakeCommand(std::vector<std::string> const& args)
}
}
cmSystemTools::cmTarAction action = cmSystemTools::TarActionNone;
cmSystemTools::cmTarCompression compress =
cmSystemTools::TarCompressNone;
bool verbose = false;
int nCompress = 0;
for (auto flag : flags) {
switch (flag) {
......
......@@ -27,6 +27,7 @@ run_cmake(gnutar)
run_cmake(gnutar-gz)
run_cmake(pax)
run_cmake(pax-xz)
run_cmake(pax-zstd)
run_cmake(paxr)
run_cmake(paxr-bz2)
run_cmake(zip)
set(OUTPUT_NAME "test.tar.zstd")
set(COMPRESSION_FLAGS cvf)
set(COMPRESSION_OPTIONS --format=pax --zstd)
set(DECOMPRESSION_FLAGS xvf)
include(${CMAKE_CURRENT_LIST_DIR}/roundtrip.cmake)
check_magic("28b52ffd0058" LIMIT 6 HEX)
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