jdk/src/share/classes/sun/misc/MessageUtils.java
changeset 2 90ce3da70b43
child 5506 202f599c92aa
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/share/classes/sun/misc/MessageUtils.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,127 @@
+/*
+ * Copyright 1995-2000 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+package sun.misc;
+
+/**
+ * MessageUtils: miscellaneous utilities for handling error and status
+ * properties and messages.
+ *
+ * @author Herb Jellinek
+ */
+
+public class MessageUtils {
+    // can instantiate it for to allow less verbose use - via instance
+    // instead of classname
+
+    public MessageUtils() { }
+
+    public static String subst(String patt, String arg) {
+        String args[] = { arg };
+        return subst(patt, args);
+    }
+
+    public static String subst(String patt, String arg1, String arg2) {
+        String args[] = { arg1, arg2 };
+        return subst(patt, args);
+    }
+
+    public static String subst(String patt, String arg1, String arg2,
+                               String arg3) {
+        String args[] = { arg1, arg2, arg3 };
+        return subst(patt, args);
+    }
+
+    public static String subst(String patt, String args[]) {
+        StringBuffer result = new StringBuffer();
+        int len = patt.length();
+        for (int i = 0; i >= 0 && i < len; i++) {
+            char ch = patt.charAt(i);
+            if (ch == '%') {
+                if (i != len) {
+                    int index = Character.digit(patt.charAt(i + 1), 10);
+                    if (index == -1) {
+                        result.append(patt.charAt(i + 1));
+                        i++;
+                    } else if (index < args.length) {
+                        result.append(args[index]);
+                        i++;
+                    }
+                }
+            } else {
+                result.append(ch);
+            }
+        }
+        return result.toString();
+    }
+
+    public static String substProp(String propName, String arg) {
+        return subst(System.getProperty(propName), arg);
+    }
+
+    public static String substProp(String propName, String arg1, String arg2) {
+        return subst(System.getProperty(propName), arg1, arg2);
+    }
+
+    public static String substProp(String propName, String arg1, String arg2,
+                                   String arg3) {
+        return subst(System.getProperty(propName), arg1, arg2, arg3);
+    }
+
+    /**
+     *  Print a message directly to stderr, bypassing all the
+     *  character conversion methods.
+     *  @param msg   message to print
+     */
+    public static native void toStderr(String msg);
+
+    /**
+     *  Print a message directly to stdout, bypassing all the
+     *  character conversion methods.
+     *  @param msg   message to print
+     */
+    public static native void toStdout(String msg);
+
+
+    // Short forms of the above
+
+    public static void err(String s) {
+        toStderr(s + "\n");
+    }
+
+    public static void out(String s) {
+        toStdout(s + "\n");
+    }
+
+    // Print a stack trace to stderr
+    //
+    public static void where() {
+        Throwable t = new Throwable();
+        StackTraceElement[] es = t.getStackTrace();
+        for (int i = 1; i < es.length; i++)
+            toStderr("\t" + es[i].toString() + "\n");
+    }
+
+}