glusterfs

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#!/bin/bash
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# To override version/release from git,
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# create VERSION file containing text with version/release
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# eg. v3.4.0-1
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# One thing to note, If one does 'git clone --depth N glusterfs.git',
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# the git describe command doesn't work. Hence you notice below that
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# we have added timestamp as version (YYYY.MM.DD) and release (HH.mmss)
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PKG_VERSION=`cat VERSION 2> /dev/null || git describe --tags --match "v[0-9]*" 2>/dev/null`
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get_version()
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{
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    # tags and output versions:
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    #   - v3.4.0   => 3.4.0 (upstream clean)
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    #   - v3.4.0-1 => 3.4.0 (downstream clean)
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    #   - v3.4.0-2-g34e62f   => 3.4.0 (upstream dirty)
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    #   - v3.4.0-1-2-g34e62f => 3.4.0 (downstream dirty)
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    AWK_VERSION='
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    BEGIN { FS="-" }
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    /^v[0-9]/ {
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      sub(/^v/,"") ; print $1
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    }'
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    version=$(echo $PKG_VERSION | awk "$AWK_VERSION" | tr -cd '[:alnum:].')
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    if [ "x${version}" == "x" ] ; then
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       version=$(date +%Y.%m.%d | tr -d '\n')
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    fi
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    echo $version | tr -d '\n'
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}
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get_release()
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{
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    # tags and output releases:
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    #   - v3.4.0   => 0 (upstream clean)
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    #   - v3.4.0-1 => 1 (downstream clean)
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    #   - v3.4.0-2-g34e62f1   => 2.git34e62f1 (upstream dirty)
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    #   - v3.4.0-1-2-g34e62f1 => 1.2.git34e62f1 (downstream dirty)
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    AWK_RELEASE='
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    BEGIN { FS="-"; OFS="." }
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    /^v[0-9]/ {
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      if (NF == 1) print 0
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      else if (NF == 2) print $2
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      else if (NF == 3) print $2, "git" substr($3, 2)
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      else if (NF == 4) print $2, $3, "git" substr($4, 2)
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    }'
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    release=$(echo $PKG_VERSION | awk "$AWK_RELEASE" | tr -cd '[:alnum:].')
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    if [ "x${release}" == "x" ] ; then
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       release=$(date +%H.%M%S | tr -d '\n')
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    fi
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    echo $release | tr -d '\n'
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}
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if test "x$1" = "x--full"; then
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    echo -n "v$(get_version)-$(get_release)"
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elif test "x$1" = "x--version"; then
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    get_version
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elif test "x$1" = "x--release"; then
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    get_release
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else
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    echo "usage: $0 [--full|--version|--release]"
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    exit 1
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fi
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