irssi/utils/irssi-version.sh

#!/bin/sh

DATE=$(GIT_DIR=$1/.git git log -1 --pretty=format:%ci HEAD 2>/dev/null)

VERSION_DATE=$(echo "$DATE" | cut -f 1 -d ' ' | tr -d -)
VERSION_TIME=$(echo "$DATE" | cut -f 2 -d ' ' | awk -F: '{printf "%d", $1$2}')

if test -z "$VERSION_DATE"; then
    DATE=$(grep '^v' "$1"/NEWS | head -1)
    VERSION_DATE=$(echo "$DATE" | cut -f 2 -d ' ' | tr -d -)
    case $VERSION_DATE in
	*xx)
	    VERSION_DATE=$(date +%Y%m%d)
	;;
    esac
    VERSION_TIME=$(echo "$DATE" | cut -f 1 -d ' ' | tr -d v | tr .- ' ')
    VERSION_TIME=$(printf %d%d%02d $VERSION_TIME 2>/dev/null | cut -c 1-4)
fi

echo "#define IRSSI_VERSION_DATE $VERSION_DATE"
echo "#define IRSSI_VERSION_TIME $VERSION_TIME"

if echo "${VERSION}" | grep -q -- -head; then
  # -head version, get extra details from git if we can
  git_version=$(GIT_DIR=$1/.git git describe --dirty --long --tags --match '[0-9]*.[0-9]*' 2>/dev/null)
  if [ $? = 0 ]; then
    echo "#undef PACKAGE_VERSION"
    echo "#define PACKAGE_VERSION \"${git_version}\""
  fi
fi