1 files changed, 73 insertions, 0 deletions
diff --git a/tools/set_git_version.sh b/tools/set_git_version.sh
new file mode 100755
index 000000000..fb2293be0
--- /dev/null
+++ b/tools/set_git_version.sh
@@ -0,0 +1,73 @@
+#!/bin/sh
+#
+# Copyright (C) 2003-2023 Sébastien Helleu <flashcode@flashtux.org>
+#
+# This file is part of WeeChat, the extensible chat client.
+#
+# WeeChat is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# WeeChat is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with WeeChat.  If not, see <https://www.gnu.org/licenses/>.
+#
+
+#
+# Updates git version in config-git.h if the output of "git describe" has changed.
+#
+# Syntax:
+#    set_git_version.sh <rootdir> <version> <headerfile>
+#
+#       rootdir   : root directory with WeeChat files (to search .git/ directory)
+#       version   : WeeChat version, for example 0.3.9 or 0.4.0-dev
+#       headerfile: file to update, for example config-git.h
+#
+
+if [ $# -lt 3 ]; then
+    echo "Syntax: $0 <rootdir> <version> <headerfile>"
+    exit 1
+fi
+
+ROOTDIR=$1
+VERSION=$2
+HEADERFILE=$3
+
+# debug:
+#echo "pwd=$PWD, rootdir=$ROOTDIR, version=$VERSION, headerfile=$HEADERFILE"
+
+# read git version if we are in a devel/rc version and if we are in a repository
+GIT_VERSION=""
+case ${VERSION} in
+*-*)
+    # devel/rc version (like 0.4.0-dev or 0.4.0-rc1)
+    if [ -d "${ROOTDIR}/.git" ]; then
+        GIT_VERSION=$(cd "${ROOTDIR}" && git describe 2>/dev/null)
+    fi
+    ;;
+*)
+    # stable version => no git version
+    ;;
+esac
+
+# check if git version has changed
+if [ ! -f "${HEADERFILE}" ]; then
+    # header does not exist => create it
+    echo "Creating file ${HEADERFILE} with git version: \"${GIT_VERSION}\""
+    echo "#define PACKAGE_VERSION_GIT \"${GIT_VERSION}\"" >"${HEADERFILE}"
+else
+    if grep -q "#define PACKAGE_VERSION_GIT \"${GIT_VERSION}\"" "${HEADERFILE}"; then
+        # git version matches the file => NO update
+        echo "File ${HEADERFILE} is up-to-date (git version: \"${GIT_VERSION}\")"
+    else
+        # git version not found in file => update file with this git version
+        echo "Updating file ${HEADERFILE} with git version: \"${GIT_VERSION}\""
+        sed "s/#define PACKAGE_VERSION_GIT \".*\"/#define PACKAGE_VERSION_GIT \"${GIT_VERSION}\"/" "${HEADERFILE}" >"${HEADERFILE}.tmp"
+        mv -f "${HEADERFILE}.tmp" "${HEADERFILE}"
+    fi
+fi