[PATCH] src-release.sh: Support zstd compression

[Sam James]

Mark Wielaard <mark@klomp.org> writes:

> This adds -z as option to src-release.sh which adds zstd to the list
> of compressors. This creates a tar.zst archive.

I don't see that much value in this - very few people use .zst for
distfiles and it's not like we'll stop producing the others for
releases.

But it's also cheap to do, so I won't bikeshed it further ;)

> ---
>  src-release.sh | 18 +++++++++++++++++-
>  1 file changed, 17 insertions(+), 1 deletion(-)
>
> diff --git a/src-release.sh b/src-release.sh
> index 0e95dde18bc3..2377c2b20ee8 100755
> --- a/src-release.sh
> +++ b/src-release.sh
> @@ -26,6 +26,7 @@ BZIPPROG=bzip2
>  GZIPPROG=gzip
>  LZIPPROG=lzip
>  XZPROG=xz
> +ZSTDPROG=zstd
>  SHA256PROG=sha256sum
>  MAKE=make
>  CC=gcc
> @@ -241,6 +242,16 @@ do_xz()
>      $XZPROG -k -v -9 $package-$ver.tar
>  }
>  
> +# Compress the output with zstd
> +do_zstd()
> +{
> +    package=$1
> +    ver=$2
> +    echo "==> Zzipping $package-$ver.tar.zst"
> +    rm -f $package-$ver.tar.zst
> +    $ZSTDPROG -k -v -19 -T0 $package-$ver.tar
> +}
> +
>  # Compress the output with all selected compresion methods
>  do_compress()
>  {
> @@ -257,6 +268,8 @@ do_compress()
>  		do_lz $package $ver;;
>  	    xz)
>  		do_xz $package $ver;;
> +	    zstd)
> +		do_zstd $package $ver;;
>  	    *)
>  		echo "Unknown compression method: $comp" && exit 1;;
>  	esac
> @@ -352,6 +365,7 @@ usage()
>      echo "  -g: Compress with gzip"
>      echo "  -l: Compress with lzip"
>      echo "  -x: Compress with xz"
> +    echo "  -z: Compress with zstd"
>      echo "  -r <date>: Create a reproducible tarball using <date> as the mtime"
>      exit 1
>  }
> @@ -376,7 +390,7 @@ build_release()
>  
>  compressors=""
>  
> -while getopts ":bglr:x" opt; do
> +while getopts ":bglr:xz" opt; do
>      case $opt in
>  	b)
>  	    compressors="$compressors bz2";;
> @@ -388,6 +402,8 @@ while getopts ":bglr:x" opt; do
>  	    release_date=$OPTARG;;
>  	x)
>  	    compressors="$compressors xz";;
> +	z)
> +	    compressors="$compressors zstd";;
>  	\?)
>  	    echo "Invalid option: -$OPTARG" && usage;;
>    esac