Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.message / src / org / simantics / message / util / TagUtil.java

diff --git a/bundles/org.simantics.message/src/org/simantics/message/util/TagUtil.java b/bundles/org.simantics.message/src/org/simantics/message/util/TagUtil.java
new file mode 100644 (file)
index 0000000..f805e2c
--- /dev/null
+++ b/bundles/org.simantics.message/src/org/simantics/message/util/TagUtil.java
@@ -0,0 +1,98 @@
+/*******************************************************************************\r
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
+ * in Industry THTH ry.\r
+ * All rights reserved. This program and the accompanying materials\r
+ * are made available under the terms of the Eclipse Public License v1.0\r
+ * which accompanies this distribution, and is available at\r
+ * http://www.eclipse.org/legal/epl-v10.html\r
+ *\r
+ * Contributors:\r
+ *     VTT Technical Research Centre of Finland - initial API and implementation\r
+ *******************************************************************************/\r
+package org.simantics.message.util;\r
+\r
+/**\r
+ * @author Tuukka Lehtonen\r
+ */\r
+public final class TagUtil {\r
+\r
+    /**\r
+     * No operation, does nothing. Just a convenience for replacing a tag with\r
+     * no tag in code.\r
+     * \r
+     * @param text the input\r
+     * @return the specified input text\r
+     */\r
+    public static String nop(String text) {\r
+        return text;\r
+    }\r
+\r
+    public static String tag(String s, String tag) {\r
+        if (tag == null)\r
+            return s;\r
+\r
+        StringBuilder b = new StringBuilder(s.length() + tag.length()*2 + 6);\r
+        b.append('<');\r
+        b.append(tag);\r
+        b.append('>');\r
+        b.append(s);\r
+        b.append("</");\r
+        b.append(tag);\r
+        b.append('>');\r
+        return b.toString();\r
+    }\r
+    \r
+    /**\r
+     * @param s\r
+     * @param tag\r
+     * @param attrs attribute+value pairs \r
+     * @return\r
+     */\r
+    public static String tag(String s, String tag, String...attrs) {\r
+        assert (attrs.length % 2 == 0);\r
+        StringBuilder b = new StringBuilder(s.length() + tag.length()*2 + 30);\r
+        b.append('<');\r
+        b.append(tag);\r
+        for (int i = 0; i < attrs.length; i+=2) {\r
+            b.append(' ');\r
+            b.append(attrs[i]);\r
+            b.append("=\"");\r
+            b.append(attrs[i+1]);\r
+            b.append('"');\r
+        }\r
+        b.append('>');\r
+        b.append(s);\r
+        b.append("</");\r
+        b.append(tag);\r
+        b.append('>');\r
+        return b.toString();\r
+    }\r
+\r
+    // NEVER MIND THESE\r
+\r
+    private static boolean isEnclosed(String s, String tag) {\r
+        String trim = s.trim();\r
+        int tagLen = tag.length();\r
+        int len = trim.length();\r
+        boolean startTag = (len >= tag.length() + 2) && (trim.charAt(0) == '<') && trim.startsWith(tag, 1) && (trim.charAt(1+tagLen) == '>');\r
+        boolean endTag = (len >= tag.length()*2 + 5) && trim.startsWith("</", len - 1 - tagLen - 2) && trim.startsWith(tag, 1) && (trim.charAt(len - 1) == '>');\r
+        return startTag && endTag;\r
+    }\r
+\r
+    public static void main(String[] args) {\r
+        assertTrue(isEnclosed("form", "form") == false);\r
+        assertTrue(isEnclosed("<form></form>", "form") == true);\r
+        assertTrue(isEnclosed("<form>    </form>", "form") == true);\r
+        assertTrue(isEnclosed("   <form></form>", "form") == true);\r
+        assertTrue(isEnclosed("<form></form>   ", "form") == true);\r
+        assertTrue(isEnclosed("   <form></form>   ", "form") == true);\r
+        assertTrue(isEnclosed("<form>FOO</form>", "form") == true);\r
+        assertTrue(isEnclosed("<form>   FOO </form>", "form") == true);\r
+    }\r
+\r
+    private static void assertTrue(boolean b) {\r
+        if (b == false)\r
+            throw new AssertionError(false);\r
+    }\r
+\r
+}\r