| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
| IOCase |
|
| 2.5;2.5 |
| 1 | /* | |
| 2 | * Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE | |
| 3 | * file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file | |
| 4 | * to You under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the | |
| 5 | * License. You may obtain a copy of the License at | |
| 6 | * | |
| 7 | * http://www.apache.org/licenses/LICENSE-2.0 | |
| 8 | * | |
| 9 | * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on | |
| 10 | * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the | |
| 11 | * specific language governing permissions and limitations under the License. | |
| 12 | */ | |
| 13 | package liquibase.util.file; | |
| 14 | ||
| 15 | import java.io.Serializable; | |
| 16 | ||
| 17 | /** | |
| 18 | * Enumeration of IO case sensitivity. | |
| 19 | * <p> | |
| 20 | * Different filing systems have different rules for case-sensitivity. Windows is case-insensitive, Unix is | |
| 21 | * case-sensitive. | |
| 22 | * <p> | |
| 23 | * This class captures that difference, providing an enumeration to control how filename comparisons should be | |
| 24 | * performed. It also provides methods that use the enumeration to perform comparisons. | |
| 25 | * <p> | |
| 26 | * Wherever possible, you should use the <code>check</code> methods in this class to compare filenames. | |
| 27 | * | |
| 28 | * @author Stephen Colebourne | |
| 29 | * @version $Id: IOCase.java 606345 2007-12-21 23:43:01Z ggregory $ | |
| 30 | * @since Commons IO 1.3 | |
| 31 | */ | |
| 32 | final class IOCase implements Serializable { | |
| 33 | ||
| 34 | /** | |
| 35 | * The constant for case sensitive regardless of operating system. | |
| 36 | */ | |
| 37 | 0 | public static final IOCase SENSITIVE = new IOCase("Sensitive", true); |
| 38 | ||
| 39 | /** | |
| 40 | * The constant for case insensitive regardless of operating system. | |
| 41 | */ | |
| 42 | 0 | public static final IOCase INSENSITIVE = new IOCase("Insensitive", false); |
| 43 | ||
| 44 | /** | |
| 45 | * The constant for case sensitivity determined by the current operating system. Windows is case-insensitive when | |
| 46 | * comparing filenames, Unix is case-sensitive. | |
| 47 | * <p> | |
| 48 | * If you derialize this constant of Windows, and deserialize on Unix, or vice versa, then the value of the | |
| 49 | * case-sensitivity flag will change. | |
| 50 | */ | |
| 51 | 0 | public static final IOCase SYSTEM = new IOCase("System", !FilenameUtils.isSystemWindows()); |
| 52 | ||
| 53 | /** Serialization version. */ | |
| 54 | private static final long serialVersionUID = -6343169151696340687L; | |
| 55 | ||
| 56 | /** The enumeration name. */ | |
| 57 | private final String name; | |
| 58 | ||
| 59 | /** The sensitivity flag. */ | |
| 60 | private final transient boolean sensitive; | |
| 61 | ||
| 62 | // ----------------------------------------------------------------------- | |
| 63 | /** | |
| 64 | * Factory method to create an IOCase from a name. | |
| 65 | * | |
| 66 | * @param name | |
| 67 | * the name to find | |
| 68 | * @return the IOCase object | |
| 69 | * @throws IllegalArgumentException | |
| 70 | * if the name is invalid | |
| 71 | */ | |
| 72 | public static IOCase forName(String name) { | |
| 73 | 0 | if (IOCase.SENSITIVE.name.equals(name)) { |
| 74 | 0 | return IOCase.SENSITIVE; |
| 75 | } | |
| 76 | 0 | if (IOCase.INSENSITIVE.name.equals(name)) { |
| 77 | 0 | return IOCase.INSENSITIVE; |
| 78 | } | |
| 79 | 0 | if (IOCase.SYSTEM.name.equals(name)) { |
| 80 | 0 | return IOCase.SYSTEM; |
| 81 | } | |
| 82 | 0 | throw new IllegalArgumentException("Invalid IOCase name: " + name); |
| 83 | } | |
| 84 | ||
| 85 | // ----------------------------------------------------------------------- | |
| 86 | /** | |
| 87 | * Private constructor. | |
| 88 | * | |
| 89 | * @param name | |
| 90 | * the name | |
| 91 | * @param sensitive | |
| 92 | * the sensitivity | |
| 93 | */ | |
| 94 | 0 | private IOCase(String name, boolean sensitive) { |
| 95 | 0 | this.name = name; |
| 96 | 0 | this.sensitive = sensitive; |
| 97 | 0 | } |
| 98 | ||
| 99 | /** | |
| 100 | * Replaces the enumeration from the stream with a real one. This ensures that the correct flag is set for SYSTEM. | |
| 101 | * | |
| 102 | * @return the resolved object | |
| 103 | */ | |
| 104 | private Object readResolve() { | |
| 105 | 0 | return forName(name); |
| 106 | } | |
| 107 | ||
| 108 | // ----------------------------------------------------------------------- | |
| 109 | /** | |
| 110 | * Gets the name of the constant. | |
| 111 | * | |
| 112 | * @return the name of the constant | |
| 113 | */ | |
| 114 | public String getName() { | |
| 115 | 0 | return name; |
| 116 | } | |
| 117 | ||
| 118 | /** | |
| 119 | * Does the object represent case sensitive comparison. | |
| 120 | * | |
| 121 | * @return true if case sensitive | |
| 122 | */ | |
| 123 | public boolean isCaseSensitive() { | |
| 124 | 0 | return sensitive; |
| 125 | } | |
| 126 | ||
| 127 | // ----------------------------------------------------------------------- | |
| 128 | /** | |
| 129 | * Compares two strings using the case-sensitivity rule. | |
| 130 | * <p> | |
| 131 | * This method mimics {@link String#compareTo} but takes case-sensitivity into account. | |
| 132 | * | |
| 133 | * @param str1 | |
| 134 | * the first string to compare, not null | |
| 135 | * @param str2 | |
| 136 | * the second string to compare, not null | |
| 137 | * @return true if equal using the case rules | |
| 138 | * @throws NullPointerException | |
| 139 | * if either string is null | |
| 140 | */ | |
| 141 | public int checkCompareTo(String str1, String str2) { | |
| 142 | 0 | if (str1 == null || str2 == null) { |
| 143 | 0 | throw new NullPointerException("The strings must not be null"); |
| 144 | } | |
| 145 | 0 | return sensitive ? str1.compareTo(str2) : str1.compareToIgnoreCase(str2); |
| 146 | } | |
| 147 | ||
| 148 | /** | |
| 149 | * Compares two strings using the case-sensitivity rule. | |
| 150 | * <p> | |
| 151 | * This method mimics {@link String#equals} but takes case-sensitivity into account. | |
| 152 | * | |
| 153 | * @param str1 | |
| 154 | * the first string to compare, not null | |
| 155 | * @param str2 | |
| 156 | * the second string to compare, not null | |
| 157 | * @return true if equal using the case rules | |
| 158 | * @throws NullPointerException | |
| 159 | * if either string is null | |
| 160 | */ | |
| 161 | public boolean checkEquals(String str1, String str2) { | |
| 162 | 0 | if (str1 == null || str2 == null) { |
| 163 | 0 | throw new NullPointerException("The strings must not be null"); |
| 164 | } | |
| 165 | 0 | return sensitive ? str1.equals(str2) : str1.equalsIgnoreCase(str2); |
| 166 | } | |
| 167 | ||
| 168 | /** | |
| 169 | * Checks if one string starts with another using the case-sensitivity rule. | |
| 170 | * <p> | |
| 171 | * This method mimics {@link String#startsWith(String)} but takes case-sensitivity into account. | |
| 172 | * | |
| 173 | * @param str | |
| 174 | * the string to check, not null | |
| 175 | * @param start | |
| 176 | * the start to compare against, not null | |
| 177 | * @return true if equal using the case rules | |
| 178 | * @throws NullPointerException | |
| 179 | * if either string is null | |
| 180 | */ | |
| 181 | public boolean checkStartsWith(String str, String start) { | |
| 182 | 0 | return str.regionMatches(!sensitive, 0, start, 0, start.length()); |
| 183 | } | |
| 184 | ||
| 185 | /** | |
| 186 | * Checks if one string ends with another using the case-sensitivity rule. | |
| 187 | * <p> | |
| 188 | * This method mimics {@link String#endsWith} but takes case-sensitivity into account. | |
| 189 | * | |
| 190 | * @param str | |
| 191 | * the string to check, not null | |
| 192 | * @param end | |
| 193 | * the end to compare against, not null | |
| 194 | * @return true if equal using the case rules | |
| 195 | * @throws NullPointerException | |
| 196 | * if either string is null | |
| 197 | */ | |
| 198 | public boolean checkEndsWith(String str, String end) { | |
| 199 | 0 | int endLen = end.length(); |
| 200 | 0 | return str.regionMatches(!sensitive, str.length() - endLen, end, 0, endLen); |
| 201 | } | |
| 202 | ||
| 203 | /** | |
| 204 | * Checks if one string contains another at a specific index using the case-sensitivity rule. | |
| 205 | * <p> | |
| 206 | * This method mimics parts of {@link String#regionMatches(boolean, int, String, int, int)} but takes | |
| 207 | * case-sensitivity into account. | |
| 208 | * | |
| 209 | * @param str | |
| 210 | * the string to check, not null | |
| 211 | * @param strStartIndex | |
| 212 | * the index to start at in str | |
| 213 | * @param search | |
| 214 | * the start to search for, not null | |
| 215 | * @return true if equal using the case rules | |
| 216 | * @throws NullPointerException | |
| 217 | * if either string is null | |
| 218 | */ | |
| 219 | public boolean checkRegionMatches(String str, int strStartIndex, String search) { | |
| 220 | 0 | return str.regionMatches(!sensitive, strStartIndex, search, 0, search.length()); |
| 221 | } | |
| 222 | ||
| 223 | /** | |
| 224 | * Converts the case of the input String to a standard format. Subsequent operations can then use standard String | |
| 225 | * methods. | |
| 226 | * | |
| 227 | * @param str | |
| 228 | * the string to convert, null returns null | |
| 229 | * @return the lower-case version if case-insensitive | |
| 230 | */ | |
| 231 | String convertCase(String str) { | |
| 232 | 0 | if (str == null) { |
| 233 | 0 | return null; |
| 234 | } | |
| 235 | 0 | return sensitive ? str : str.toLowerCase(); |
| 236 | } | |
| 237 | ||
| 238 | // ----------------------------------------------------------------------- | |
| 239 | /** | |
| 240 | * Gets a string describing the sensitivity. | |
| 241 | * | |
| 242 | * @return a string describing the sensitivity | |
| 243 | */ | |
| 244 | public String toString() { | |
| 245 | 0 | return name; |
| 246 | } | |
| 247 | ||
| 248 | } |