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FFmpeg/version.sh
Ramiro Polla 15ccfff12c Read "Last Changed Rev" field instead of "Revision" field to avoid being
affected by changes in other directories (such as branches).

Originally committed as revision 21252 to svn://svn.ffmpeg.org/ffmpeg/trunk
2010-01-16 18:29:52 +00:00

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#!/bin/sh
# check for SVN revision number
revision=$(cd "$1" && cat snapshot_version 2> /dev/null)
test $revision || revision=$(cd "$1" && LC_ALL=C svn info 2> /dev/null | grep "Last Changed Rev" | cut -d' ' -f4)
test $revision || revision=$(cd "$1" && grep committed-rev .svn/entries 2>/dev/null | head -n 1 | cut -d '"' -f2)
test $revision || revision=$(cd "$1" && sed -n -e '/^dir$/{n
p
q
}' .svn/entries 2>/dev/null)
test $revision && revision=SVN-r$revision
# check for git svn revision number
if ! test $revision; then
revision=$(cd "$1" && git svn find-rev HEAD 2> /dev/null)
test $revision && revision=git-svn-r$revision
fi
# check for git short hash
if ! test $revision; then
revision=$(cd "$1" && git log -1 --pretty=format:%h 2> /dev/null)
test $revision && revision=git-$revision
fi
# no revision number found
test $revision || revision=UNKNOWN
# releases extract the version number from the VERSION file
version=$(cd "$1" && cat VERSION 2> /dev/null)
test $version || version=$revision
test -n "$3" && version=$version-$3
NEW_REVISION="#define FFMPEG_VERSION \"$version\""
OLD_REVISION=$(cat version.h 2> /dev/null)
# Update version.h only on revision changes to avoid spurious rebuilds
if test "$NEW_REVISION" != "$OLD_REVISION"; then
echo "$NEW_REVISION" > "$2"
fi