+++ /dev/null
-/*\r
- * Copyright 2002-2008 the original author or authors.\r
- *\r
- * Licensed under the Apache License, Version 2.0 (the "License");\r
- * you may not use this file except in compliance with the License.\r
- * You may obtain a copy of the License at\r
- *\r
- * http://www.apache.org/licenses/LICENSE-2.0\r
- *\r
- * Unless required by applicable law or agreed to in writing, software\r
- * distributed under the License is distributed on an "AS IS" BASIS,\r
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r
- * See the License for the specific language governing permissions and\r
- * limitations under the License.\r
- */\r
-\r
-package org.argeo.osgi.boot.internal.springutil;\r
-\r
-/**\r
- * Helper class for resolving placeholders in texts. Usually applied to file paths.\r
- *\r
- * <p>A text may contain <code>${...}</code> placeholders, to be resolved as\r
- * system properties: e.g. <code>${user.dir}</code>.\r
- *\r
- * @author Juergen Hoeller\r
- * @since 1.2.5\r
- * @see #PLACEHOLDER_PREFIX\r
- * @see #PLACEHOLDER_SUFFIX\r
- * @see System#getProperty(String)\r
- */\r
-public abstract class SystemPropertyUtils {\r
-\r
- /** Prefix for system property placeholders: "${" */\r
- public static final String PLACEHOLDER_PREFIX = "${";\r
-\r
- /** Suffix for system property placeholders: "}" */\r
- public static final String PLACEHOLDER_SUFFIX = "}";\r
-\r
-\r
- /**\r
- * Resolve ${...} placeholders in the given text,\r
- * replacing them with corresponding system property values.\r
- * @param text the String to resolve\r
- * @return the resolved String\r
- * @see #PLACEHOLDER_PREFIX\r
- * @see #PLACEHOLDER_SUFFIX\r
- */\r
- public static String resolvePlaceholders(String text) {\r
- StringBuffer buf = new StringBuffer(text);\r
-\r
- int startIndex = buf.indexOf(PLACEHOLDER_PREFIX);\r
- while (startIndex != -1) {\r
- int endIndex = buf.indexOf(PLACEHOLDER_SUFFIX, startIndex + PLACEHOLDER_PREFIX.length());\r
- if (endIndex != -1) {\r
- String placeholder = buf.substring(startIndex + PLACEHOLDER_PREFIX.length(), endIndex);\r
- int nextIndex = endIndex + PLACEHOLDER_SUFFIX.length();\r
- try {\r
- String propVal = System.getProperty(placeholder);\r
- if (propVal == null) {\r
- // Fall back to searching the system environment.\r
- //propVal = System.getenv(placeholder);// mbaudier - 2009-07-26\r
- throw new Error("getenv no longer supported, use properties and -D instead: " + placeholder);\r
- }\r
- if (propVal != null) {\r
- buf.replace(startIndex, endIndex + PLACEHOLDER_SUFFIX.length(), propVal);\r
- nextIndex = startIndex + propVal.length();\r
- }\r
- else {\r
- System.err.println("Could not resolve placeholder '" + placeholder + "' in [" + text +\r
- "] as system property: neither system property nor environment variable found");\r
- }\r
- }\r
- catch (Throwable ex) {\r
- System.err.println("Could not resolve placeholder '" + placeholder + "' in [" + text +\r
- "] as system property: " + ex);\r
- }\r
- startIndex = buf.indexOf(PLACEHOLDER_PREFIX, nextIndex);\r
- }\r
- else {\r
- startIndex = -1;\r
- }\r
- }\r
-\r
- return buf.toString();\r
- }\r
-\r
-}\r