AfflictionNetworks/samskivert
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Fancied up the default log provider. It now wraps log lines at 132 columns

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and uses VT100 escape codes to highlight module names, warning log
messages and debug log messages.


git-svn-id: https://samskivert.googlecode.com/svn/trunk@768 6335cc39-0255-0410-8fd6-9bcaacd3b74c
This commit is contained in:
mdb
2002-05-31 20:45:26 +00:00
parent c583d4a81d
commit 751b963199
1 changed files with 55 additions and 4 deletions
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projects/samskivert/src/java/com/samskivert/util/DefaultLogProvider.java
+55 -4
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@@ -1,5 +1,5 @@
//
// $Id: DefaultLogProvider.java,v 1.4 2002/05/31 18:47:05 mdb Exp $
// $Id: DefaultLogProvider.java,v 1.5 2002/05/31 20:45:26 mdb Exp $
//
// samskivert library - useful routines for java programs
// Copyright (C) 2001 Michael Bayne
@@ -69,8 +69,41 @@ public class DefaultLogProvider implements LogProvider
protected synchronized String formatEntry (
String moduleName, int level, String message)
{
return (_format.format(new Date()) + " " +
LEVEL_CHARS[level] + " " + moduleName + ": " + message);
StringBuffer buf = new StringBuffer();
buf.append(_format.format(new Date())).append(" ");
if (level == Log.WARNING) {
buf.append(BOLD);
} else if (level == Log.DEBUG) {
buf.append(REVERSE);
}
buf.append(LEVEL_CHARS[level]).append(" ");
// let the formatting continue to influence the module name and
// then it will be turned off when underlining is turned off
// if we wrap, we include the module name in the wrapped text
int wrapwid = LOG_LINE_LENGTH - buf.length();
buf.append(UNDERLINE).append(moduleName).append(PLAIN).append(": ");
// we'll be wrapping the log lines
int remain = message.length(), offset = 0;
int linewid = Math.min(LOG_LINE_LENGTH - buf.length(), remain);
// append the first line
buf.append(message.substring(offset, offset+linewid));
remain -= linewid;
offset += linewid;
// now append the wrapped lines (if there are any)
while (remain > 0) {
buf.append("\n").append(GAP);
linewid = Math.min(wrapwid, remain);
buf.append(message.substring(offset, offset+linewid));
remain -= linewid;
offset += linewid;
}
return buf.toString();
}
/** The default log level. */
@@ -84,5 +117,23 @@ public class DefaultLogProvider implements LogProvider
new SimpleDateFormat("yyyy/MM/dd HH:mm:ss:SSSS");
/** Used to tag log messages with their log level. */
protected static final String[] LEVEL_CHARS = { "*", "?", "!" };
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;
}