| commit | author | age | ||
| f13c4c | 1 | /* |
| JM | 2 | * Copyright 2011 gitblit.com. |
| 3 | * | |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); | |
| 5 | * you may not use this file except in compliance with the License. | |
| 6 | * You may obtain a copy of the License at | |
| 7 | * | |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 | |
| 9 | * | |
| 10 | * Unless required by applicable law or agreed to in writing, software | |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, | |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| 13 | * See the License for the specific language governing permissions and | |
| 14 | * limitations under the License. | |
| 15 | */ | |
| 5fe7df | 16 | package com.gitblit; |
| JM | 17 | |
| 18 | import java.io.File; | |
| 19 | import java.io.FileInputStream; | |
| 20 | import java.io.FileNotFoundException; | |
| 97a20e | 21 | import java.util.Map; |
| 5fe7df | 22 | import java.util.Properties; |
| 97a20e | 23 | |
| JM | 24 | import com.gitblit.utils.FileUtils; |
| 5fe7df | 25 | |
| JM | 26 | /** |
| 892570 | 27 | * Dynamically loads and reloads a properties file by keeping track of the last |
| JM | 28 | * modification date. |
| 29 | * | |
| 30 | * @author James Moger | |
| 5fe7df | 31 | * |
| JM | 32 | */ |
| f339f5 | 33 | public class FileSettings extends IStoredSettings { |
| 2a7306 | 34 | |
| 8c9a20 | 35 | protected final File propertiesFile; |
| db653a | 36 | |
| f339f5 | 37 | private final Properties properties = new Properties(); |
| 5fe7df | 38 | |
| 892570 | 39 | private volatile long lastModified; |
| 5fe7df | 40 | |
| 28d6b2 | 41 | public FileSettings(String file) { |
| f339f5 | 42 | super(FileSettings.class); |
| 28d6b2 | 43 | this.propertiesFile = new File(file); |
| JM | 44 | } |
| db653a | 45 | |
| 892570 | 46 | /** |
| JM | 47 | * Returns a properties object which contains the most recent contents of |
| 48 | * the properties file. | |
| 49 | */ | |
| 87cc1e | 50 | @Override |
| f339f5 | 51 | protected synchronized Properties read() { |
| 892570 | 52 | if (propertiesFile.exists() && (propertiesFile.lastModified() > lastModified)) { |
| 2a7306 | 53 | FileInputStream is = null; |
| 5fe7df | 54 | try { |
| f339f5 | 55 | Properties props = new Properties(); |
| 28d6b2 | 56 | is = new FileInputStream(propertiesFile); |
| f339f5 | 57 | props.load(is); |
| 85c2e6 | 58 | |
| f339f5 | 59 | // load properties after we have successfully read file |
| JM | 60 | properties.clear(); |
| 61 | properties.putAll(props); | |
| 892570 | 62 | lastModified = propertiesFile.lastModified(); |
| 5fe7df | 63 | } catch (FileNotFoundException f) { |
| 2a7306 | 64 | // IGNORE - won't happen because file.exists() check above |
| 5fe7df | 65 | } catch (Throwable t) { |
| f339f5 | 66 | logger.error("Failed to read " + propertiesFile.getName(), t); |
| 2a7306 | 67 | } finally { |
| JM | 68 | if (is != null) { |
| 69 | try { | |
| 70 | is.close(); | |
| 71 | } catch (Throwable t) { | |
| 72 | // IGNORE | |
| 73 | } | |
| 74 | } | |
| 5fe7df | 75 | } |
| JM | 76 | } |
| 77 | return properties; | |
| 78 | } | |
| 2a7306 | 79 | |
| 892570 | 80 | /** |
| 97a20e | 81 | * Updates the specified settings in the settings file. |
| JM | 82 | */ |
| 83 | public synchronized boolean saveSettings(Map<String, String> settings) { | |
| 84 | String content = FileUtils.readContent(propertiesFile, "\n"); | |
| 85 | for (Map.Entry<String, String> setting:settings.entrySet()) { | |
| 86 | String regex = "(?m)^(" + regExEscape(setting.getKey()) + "\\s*+=\\s*+)" | |
| 87 | + "(?:[^\r\n\\\\]++|\\\\(?:\r?\n|\r|.))*+$"; | |
| 88 | content = content.replaceAll(regex, setting.getKey() + " = " + setting.getValue()); | |
| 89 | } | |
| 90 | FileUtils.writeContent(propertiesFile, content); | |
| 91 | return true; | |
| 92 | } | |
| 93 | ||
| 94 | private String regExEscape(String input) { | |
| 95 | return input.replace(".", "\\."); | |
| 96 | } | |
| 97 | ||
| 98 | /** | |
| 892570 | 99 | * @return the last modification date of the properties file |
| JM | 100 | */ |
| 101 | protected long lastModified() { | |
| 102 | return lastModified; | |
| 85c2e6 | 103 | } |
| JM | 104 | |
| 87cc1e | 105 | @Override |
| JM | 106 | public String toString() { |
| 28d6b2 | 107 | return propertiesFile.getAbsolutePath(); |
| 87cc1e | 108 | } |
| 5fe7df | 109 | } |
