platform/vcs-api/vcs-api-core/src/com/intellij/vcsUtil/VcsFilePathUtil.java

/*
 * Copyright 2000-2014 JetBrains s.r.o.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.intellij.vcsUtil;

import java.io.File;

public class VcsFilePathUtil {
  public static boolean caseDiffers(final String s1, final String s2) {
    String s1Trimmed = s1.trim();
    String s2Trimmed = s2.trim();

    if (File.separatorChar != '/') {
      s1Trimmed = s1Trimmed.replace(File.separatorChar, '/');
      s2Trimmed = s2Trimmed.replace(File.separatorChar, '/');
    }

    return (! s1Trimmed.equals(s2Trimmed)) && s1Trimmed.equalsIgnoreCase(s2Trimmed);
  }
}