Java Map Replace replaceParameters(final String value, final Map paramMap)

Description

replace Parameters

License

Apache License

Declaration

public static String replaceParameters(final String value,
            final Map<String, String> paramMap) 

Method Source Code

//package com.java2s;
/*//from  w w w  . j ava  2s  .  co  m
 * Copyright 2017 Crown Copyright
 *
 * 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.
 */

import java.util.Map;

public class Main {
    public static String replaceParameters(final String value,
            final Map<String, String> paramMap) {
        final StringBuilder sb = new StringBuilder();

        int paramStart = -1;
        char[] chars = value.toCharArray();
        for (int i = 0; i < chars.length; i++) {
            switch (chars[i]) {
            case '\\':
                if (paramStart == -1) {
                    if (i + 1 < chars.length
                            && (chars[i + 1] == '\\' || chars[i + 1] == '$')) {
                        i++;
                        sb.append(chars[i]);
                    }
                }

                break;
            case '$':
                if (paramStart == -1) {
                    if (i + 1 < chars.length && chars[i + 1] == '{') {
                        paramStart = i;
                    } else {
                        sb.append(chars[i]);
                    }
                }

                break;
            case '}':
                if (paramStart != -1) {
                    final String key = value.substring(paramStart + 2, i);
                    String replacement = paramMap.get(key);
                    if (replacement == null) {
                        replacement = "";
                    }
                    sb.append(replacement);

                    paramStart = -1;
                } else {
                    sb.append(chars[i]);
                }

                break;

            default:
                if (paramStart == -1) {
                    sb.append(chars[i]);
                }
            }
        }

        return sb.toString();
    }
}

Related

1. replaceMap(String inStr, Map replaceMap)
2. replaceMethodUriWithValues(String methodUri, Map urlParameterKeyValues)
3. replaceNode(Map map, Map replacement, List pathItems)
4. replaceNotContainedWithReplaced(String sentStr, Map mapNotContainedReplaced)
5. replaceOpcodeNames(HashMap replacementValues, final String input)
6. replaceParameters(Map map, Map originals, Map defaults, Map hards)
7. replaceParameters(String query, Map parameters)
8. replaceParameters(String str, Map parameters)
9. replaceParams(String str, Map map)