From f3c7bf71a0e6b963153877fce8a34dfdac7cd224 Mon Sep 17 00:00:00 2001
From: mdb <mdb@6335cc39-0255-0410-8fd6-9bcaacd3b74c>
Date: Thu, 6 Jun 2002 20:53:30 +0000
Subject: [PATCH] Use TermUtil for vt100 escape codes and also to obtain the
 size of our terminal window (if possible) which will be used to decide where
 to wrap our log output.

git-svn-id: https://samskivert.googlecode.com/svn/trunk@776 6335cc39-0255-0410-8fd6-9bcaacd3b74c
---
 .../samskivert/util/DefaultLogProvider.java   | 55 ++++++++++++-------
 1 file changed, 34 insertions(+), 21 deletions(-)

diff --git a/projects/samskivert/src/java/com/samskivert/util/DefaultLogProvider.java b/projects/samskivert/src/java/com/samskivert/util/DefaultLogProvider.java
index 2a4bd551..fa52eeda 100644
--- a/projects/samskivert/src/java/com/samskivert/util/DefaultLogProvider.java
+++ b/projects/samskivert/src/java/com/samskivert/util/DefaultLogProvider.java
@@ -1,5 +1,5 @@
 //
-// $Id: DefaultLogProvider.java,v 1.9 2002/05/31 22:19:07 mdb Exp $
+// $Id: DefaultLogProvider.java,v 1.10 2002/06/06 20:53:30 mdb Exp $
 //
 // samskivert library - useful routines for java programs
 // Copyright (C) 2001 Michael Bayne
@@ -20,7 +20,10 @@
 
 package com.samskivert.util;
 
+import java.awt.Dimension;
+
 import java.text.SimpleDateFormat;
+
 import java.util.Date;
 import java.util.Hashtable;
 
@@ -36,6 +39,9 @@ public class DefaultLogProvider implements LogProvider
 {
     public DefaultLogProvider ()
     {
+        // obtain our terminal size, if possible
+        obtainTermSize();
+
         try {
             // enable vt100 escape codes if requested
             String pstr = System.getProperty("log_vt100");
@@ -86,9 +92,9 @@ public class DefaultLogProvider implements LogProvider
         StringBuffer buf = new StringBuffer();
         buf.append(_format.format(new Date())).append(" ");
         if (level == Log.WARNING && _useVT100) {
-            buf.append(BOLD);
+            buf.append(TermUtil.BOLD);
         } else if (level == Log.DEBUG && _useVT100) {
-            buf.append(REVERSE);
+            buf.append(TermUtil.REVERSE);
         }
         buf.append(LEVEL_CHARS[level]).append(" ");
 
@@ -101,11 +107,11 @@ public class DefaultLogProvider implements LogProvider
         // then it will be turned off when underlining is turned off
 
         // if we wrap, we include the module name in the wrapped text
-        buf.append(_useVT100 ? UNDERLINE : "").append(moduleName);
-        buf.append(_useVT100 ? PLAIN : "").append(": ");
+        buf.append(_useVT100 ? TermUtil.UNDERLINE : "").append(moduleName);
+        buf.append(_useVT100 ? TermUtil.PLAIN : "").append(": ");
 
         // we'll be wrapping the log lines
-        int wrapwid = LOG_LINE_LENGTH - GAP.length();
+        int wrapwid = _tdimens.width - GAP.length();
         int remain = message.length(), offset = 0;
 
         // our first line contains additionally, the module name (and a
@@ -129,6 +135,23 @@ public class DefaultLogProvider implements LogProvider
         return buf.toString();
     }
 
+    /**
+     * Attempts to obtain the dimensions of the terminal window in which
+     * we're running. This is extremely platform specific, but feel free
+     * to add code to do the right thing for your platform.
+     */
+    protected static void obtainTermSize ()
+    {
+        if (_tdimens == null) {
+            _tdimens = TermUtil.getTerminalSize();
+
+            // if we were unable to obtain our dimensions, use defaults
+            if (_tdimens == null) {
+                _tdimens = new Dimension(80, 24);
+            }
+        }
+    }
+
     /** Whether or not to use the vt100 escape codes. */
     protected boolean _useVT100 = false;
 
@@ -142,24 +165,14 @@ public class DefaultLogProvider implements LogProvider
     protected SimpleDateFormat _format =
         new SimpleDateFormat("yyyy/MM/dd HH:mm:ss:SSS");
 
+    /** Contains the dimensions of the terminal window in which we're
+     * running, if it was possible to obtain them. Otherwise, it contains
+     * the default dimensions. This is used to wrap lines. */
+    protected static Dimension _tdimens;
+
     /** Used to tag log messages with their log level. */
     protected static final String[] LEVEL_CHARS = { ".", "?", "!" };
 
     /** Used to align wrapped log lines. */
     protected static final String GAP = "                          ";
-
-    /** VT100 formatting code to enabled bold text. */
-    protected static final String BOLD = "\033[1m";
-
-    /** VT100 formatting code to enabled reverse video text. */
-    protected static final String REVERSE = "\033[7m";
-
-    /** VT100 formatting code to enabled underlined text. */
-    protected static final String UNDERLINE = "\033[4m";
-
-    /** VT100 formatting code to revert to plain text. */
-    protected static final String PLAIN = "\033[m";
-
-    /** Maximum log line length. */
-    protected static final int LOG_LINE_LENGTH = 132;
 }