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ffmpeg / version.sh @ 0eb4ff9e

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#!/bin/sh
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# check for SVN revision number
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revision=$(cat snapshot_version 2> /dev/null)
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test $revision || revision=$(cd "$1" && LC_ALL=C svn info 2> /dev/null | grep Revision | cut -d' ' -f2)
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test $revision || revision=$(cd "$1" && grep revision .svn/entries 2>/dev/null | cut -d '"' -f2)
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test $revision || revision=$(cd "$1" && sed -n -e '/^dir$/{n
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p
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q
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}' .svn/entries 2>/dev/null)
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test $revision && revision=SVN-r$revision
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# check for git svn revision number
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if ! test $revision; then
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    revision=$(cd "$1" && git svn find-rev HEAD)
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    test $revision && revision=git-svn-r$revision
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fi
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# check for git short hash
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if ! test $revision; then
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    revision=$(cd "$1" && git log -1 --pretty=format:%h)
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    test $revision && revision=git-$revision
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fi
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# no revision number found
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test $revision || revision=UNKNOWN
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# releases extract the version number from the VERSION file
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version=$(cat VERSION 2> /dev/null)
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test $version || version=$revision
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test -n "$3" && version=$version-$3
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NEW_REVISION="#define FFMPEG_VERSION \"$version\""
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OLD_REVISION=$(cat version.h 2> /dev/null)
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# Update version.h only on revision changes to avoid spurious rebuilds
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if test "$NEW_REVISION" != "$OLD_REVISION"; then
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    echo "$NEW_REVISION" > "$2"
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fi