public static String segmentFileName(String segmentName, String segmentSuffix, String ext) {if (ext.length() > 0 || segmentSuffix.length() > 0) {assert !ext.startsWith(".");StringBuilder sb = new StringBuilder(segmentName.length() + 2 + segmentSuffix.length() + ext.length());sb.append(segmentName);if (segmentSuffix.length() > 0) {sb.append('_').append(segmentSuffix);}if (ext.length() > 0) {sb.append('.').append(ext);}return sb.toString();} else {return segmentName;}}
public static string SegmentFileName(string segmentName, string segmentSuffix, string ext){if (ext.Length > 0 || segmentSuffix.Length > 0){Debug.Assert(!ext.StartsWith(".", StringComparison.Ordinal));StringBuilder sb = new StringBuilder(segmentName.Length + 2 + segmentSuffix.Length + ext.Length);sb.Append(segmentName);if (segmentSuffix.Length > 0){sb.Append('_').Append(segmentSuffix);}if (ext.Length > 0){sb.Append('.').Append(ext);}return sb.ToString();}else{return segmentName;}}