Add tool/util [patch-util] - useful only for devs/contributors

build/patch-util/01-create-patch.sh

@@ -0,0 +1,51 @@
+#!/usr/bin/env sh
+
+MOD_FILE="mod-update-core.php"
+TARGET_FILE="update-core.php"
+PATCH_FILE="update-core.php.patch"
+
+set -e
+cd ./wp-src
+
+if [ ! -f "${MOD_FILE}" ]; then
+  echo "X ${MOD_FILE} not found"
+  exit 1
+fi
+
+if [ ! -f "${TARGET_FILE}" ]; then
+  echo "X ${TARGET_FILE} not found"
+  exit 1
+fi
+
+if cmp --silent "${MOD_FILE}" "${TARGET_FILE}"; then
+  echo "X ${MOD_FILE} and ${TARGET_FILE} are the same. Nothing to patch."
+  exit 1
+fi
+
+if [ -f "${PATCH_FILE}" ]; then
+  PATCH_FILE_BACKUP="$(date +%s)bak-${PATCH_FILE}"
+  echo "! Patch file ${PATCH_FILE} already exists and will be backed up"
+  mv "${PATCH_FILE}" "${PATCH_FILE_BACKUP}"
+  echo "! Backup: ${PATCH_FILE_BACKUP}"
+fi
+
+# diff exits with code 1 if there was a difference between files, so we need to temporarily disable exit-on-error
+set +e
+echo "> Patching file..."
+diff -u "${TARGET_FILE}" "${MOD_FILE}" > "${PATCH_FILE}"
+set -e
+
+if [ ! -s "${PATCH_FILE}" ]; then
+  echo "X Patch failed."
+  exit 1
+fi
+
+echo "> Fixing patch header"
+sed -i "s/${MOD_FILE}/${TARGET_FILE}/g" "${PATCH_FILE}"
+
+echo "> Patch file created ${PATCH_FILE}"
+echo "> Please run: "
+echo "  cp './wp-src/${PATCH_FILE}' '../../rootfs/etc/wp-mods/wp-admin/'"
+echo ""
+echo "> Don't forget to commit the changes"
+echo "> Finished"