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how-to-vulkan/ktx/scripts/mkversion
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2026-06-14 19:09:18 +01:00

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#! /usr/bin/env bash
# Copyright 2020, Mark Callow
# SPDX-License-Identifier: Apache-2.0
# Script to generate version number files using the output of git
# describe.
# A file of this name will be created in the subdir (object) for which a
# version number is being generated.
VF=version.h
DEF_VER=v4.0
LF='
'
# Change directory the root of the Git repo.
depth=..
cd $(dirname $0)/$depth
function genversion() {
# Try git-describe, then default.
if [ -d ${GIT_DIR:-.git} -o -f .git ]; then
if [ -z "$1" ]; then
# Get version number for HEAD revision of repo.
VN=$(git describe --match "v[0-9]*" HEAD 2>/dev/null)
else
# Get release tag containing the object identified in # $1.
VN=$(git describe --contains --match "v[0-9]*" --exclude "*-beta*" --exclude "*-rc[0-9]*" $(git rev-list -1 HEAD $1) 2>/dev/null)
if [ -z "$VN" ]; then
# No containing release tag. Look for an RC tag.
VN=$(git describe --contains --match "v[0-9]*" --exclude "*-beta*" $(git rev-list -1 HEAD $1) 2>/dev/null)
fi
if [ -z "$VN" ]; then
# No containing RC tag. Look for a beta tag.
VN=$(git describe --contains --match "v[0-9]*" $(git rev-list -1 HEAD $1) 2>/dev/null)
fi
if [ -z "$VN" ]; then
# No containing tag. Get version number a previous tag.
VN=$(git describe --match "v[0-9]*" $(git rev-list -1 HEAD $1) 2>/dev/null)
fi
if [ -z "$VN" ]; then
# No tags at all, best we can do is tag the commit.
VN="$DEF_VER-$(git rev-parse --short HEAD 2>/dev/null)"
fi
fi
case "$VN" in
*$LF*) (exit 1) ;;
v[0-9]*)
git update-index -q --refresh
test -z "$(git diff-index --name-only HEAD --)" ||
VN="$VN-dirty" ;;
esac
else
VN="$DEF_VER"
fi
}
# Write the version file, if the new version is different than the
# existing one.
function setfile() {
local VC
local verstring=$1_VERSION
if [ $dry_run -eq 1 ]; then
echo $verstring $VN
return
fi
if [ -r $2 ]; then
VC=$(grep $verstring $2 | sed -e "s/^#define $verstring //")
else
VC=unset
fi
if [ $force -eq 1 -o "$VN" != "$VC" ]; then
echo "/*" > $2
if [ "$1" = "LIBKTX" ]; then
(echo "// [API version]"
echo "@par API Version"
echo "$DEF_VER"
echo "// [API version]") >> $2
fi
(echo "// [Code version]"
echo "$VN"
echo "// [Code version]"
echo "*/"
echo "#define $verstring $VN"
echo "#define $1_DEFAULT_VERSION $DEF_VER.__default__") >> $2
fi
}
# Figure out the object name and write its version file.
function writeversion() {
# Extract version from git if it is not passed via command line
if [ -z "$VN" ]; then
genversion $1
fi
local vfp;
if [ -z "$1" ]; then
vfp=$VF
else
vfp=$1/$VF
fi
if [ "$1" = "lib" ]; then
ON=LIBKTX
setfile $ON $1/$VF
else
ON=$(basename $1)
ON=$(echo $ON | tr [:lower:] [:upper:])
setfile $ON $1/$VF
fi
}
function usage() {
echo "Usage: $0 [-a] [-f] [-n] [-v version] [-o <outfile>] [<object>]"
exit 1
}
force=0
dry_run=0
write_all=0;
args=$(getopt afnv:o: $*)
set -- $args
for i; do
case "$i" in
-a) write_all=1;
shift;;
-f) force=1;
shift;;
-n) dry_run=1;
shift;;
-v) VN=$2; shift; shift;;
-o) VF=$2; shift; shift;;
--) shift; break;;
esac
done
case $# in
0) if [ $write_all -ne 1 ]; then usage; fi;;
1) OBJ=$1;;
2) usage;;
esac
if [ $write_all -eq 1 ]; then
for i in lib tools/*; do
if [ -d $i -a "$i" != "tools/package" ]; then
writeversion $i
fi
done
else
writeversion $OBJ
fi
# vim:ai:ts=4:sts=4:sw=2:expandtab:textwidth=70