/******************************************************************************* * Copyright 2013 EMBL-EBI * * 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 uk.ac.sanger.artemis.cramtools.ref; import java.util.regex.Matcher; import java.util.regex.Pattern; /** * Formats a string pattern with an id. The following notations are support: *
* "%[precision]s" *
* "%s", expected at the end of the pattern or the last formatting notation. *
* The id supplied in the argument will be trimmed from the left so that the * last %s notation will receive the remainder of the id. *
* For example: A pattern "anything/%2s/%3s/%s" formatted for id 0123456789 will * result in "anything/01/234/56789" * * @author vadim * */ class PathPattern { private String pathPatternFormat; private Pattern pattern = Pattern.compile("%(\\d+)s"); public PathPattern(String format) { this.pathPatternFormat = format; } public String format(String id) { Matcher matcher = pattern.matcher(pathPatternFormat); StringBuffer sb = new StringBuffer(); int prevEnd = 0; while (matcher.find()) { String group = matcher.group(); int number = Integer.valueOf(group.substring(1, group.length() - 1)); sb.append(pathPatternFormat.substring(prevEnd, matcher.start())); sb.append(id.substring(0, number)); id = id.substring(number); prevEnd = matcher.end(); } sb.append(pathPatternFormat.substring(prevEnd, pathPatternFormat.length())); if (!sb.toString().contains("%s")) throw new RuntimeException("Invalid reference location pattern: " + pathPatternFormat); return sb.toString().replaceAll("%s", id); } }