001/*
002 * Copyright 2007-2021 The jdeb developers.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *      http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package org.vafer.jdeb.utils;
018
019import java.io.BufferedReader;
020import java.io.IOException;
021import java.io.InputStream;
022import java.io.InputStreamReader;
023import java.util.ArrayList;
024import java.util.List;
025
026public class FilteredFile {
027
028    private String openToken = "[[";
029    private String closeToken = "]]";
030    private List<String> lines = new ArrayList<>();
031
032    public FilteredFile(InputStream in, VariableResolver resolver) throws IOException {
033        parse(in, resolver);
034    }
035
036    public void setOpenToken(String token) {
037        openToken = token;
038    }
039
040    public void setCloseToken(String token) {
041        closeToken = token;
042    }
043
044    private void parse(InputStream in, VariableResolver resolver) throws IOException {
045        try (BufferedReader reader = new BufferedReader(new InputStreamReader(in))) {
046            String line;
047            while ((line = reader.readLine()) != null) {
048                if (resolver != null) {
049                    lines.add(Utils.replaceVariables(resolver, line, openToken, closeToken));
050                } else {
051                    lines.add(line);
052                }
053            }
054        }
055    }
056
057    public String toString() {
058        StringBuilder builder = new StringBuilder();
059        for (String line : lines) {
060            builder.append(line).append('\n');
061        }
062        return builder.toString();
063    }
064}