private static String makeBackupFilename(String filename, String toInsert) {
int lastSlash = filename.lastIndexOf(System.getProperty("file.separator"));
if (lastSlash == -1) {
JConfig.log().logDebug("Filename has no separators: " + filename);
lastSlash = 0;
}
int firstDot = filename.indexOf('.', lastSlash);
if (firstDot == -1) {
JConfig.log().logDebug("Filename has no dot/extension: " + filename);
firstDot = filename.length();
}
return filename.substring(0, firstDot) + '-' + toInsert + filename.substring(firstDot);
}
