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|
#!/bin/sh
set -eu
usage()
{
cat << EOF >&2
Usage:
-h show this HELP message
-s SRCDIR set source directory
-o OUTPUT set output header
-p PREFIX set macro prefix
EOF
exit 1
}
# one
workdir=$(pwd -P)
srcdir=
output=
prefix=
while getopts "hs:o:p:" opt; do
case $opt in
h)
usage
;;
s)
srcdir="$OPTARG"
;;
o)
output="$OPTARG"
;;
p)
prefix="$OPTARG"
;;
\?)
printf 'Invalid option: -%s' "$OPTARG" >&2
usage
;;
esac
done
# two
if [ -z "$srcdir" ] || [ -z "$output" ] || [ -z "$prefix" ]; then
usage
fi
cd -- "$srcdir"
gitver=$(git rev-parse --verify HEAD 2>/dev/null) || gitver="unknown"
cvdate=$(git show -s --format=%ci $gitver 2>/dev/null) || cvdate=$(date)
vmacro=$(printf '%s' "$prefix"'_GIT_VERSION' | tr '[:lower:]' '[:upper:]')
dmacro=$(printf '%s' "$prefix"'_GIT_DATE ' | tr '[:lower:]' '[:upper:]')
cd -- "$workdir"
# three
printf '#define %s "%s"\n#define %s "%s"\n' \
"$vmacro" "$gitver" \
"$dmacro" "$cvdate" \
> "$output"
# all done
exit 0
|
