You are viewing a plain text version of this content. The canonical link for it is here.
Posted to commits@logging.apache.org by rm...@apache.org on 2022/12/07 23:07:26 UTC

[logging-log4cxx] branch next_stable updated: LOGCXX-566 (#155)

This is an automated email from the ASF dual-hosted git repository.

rmiddleton pushed a commit to branch next_stable
in repository https://gitbox.apache.org/repos/asf/logging-log4cxx.git


The following commit(s) were added to refs/heads/next_stable by this push:
     new 68f92779 LOGCXX-566 (#155)
68f92779 is described below

commit 68f927795150014d3e5b7150b81c26bc7c911fff
Author: Robert Middleton <rm...@users.noreply.github.com>
AuthorDate: Wed Dec 7 18:07:21 2022 -0500

    LOGCXX-566 (#155)
    
    Added tests and documentation for color pattern converter to allow it to be user-configurable.
---
 src/main/cpp/colorendpatternconverter.cpp          |   5 +-
 src/main/cpp/colorstartpatternconverter.cpp        | 212 ++++++++++++++++-
 src/main/cpp/patternlayout.cpp                     |  48 +++-
 .../log4cxx/pattern/colorstartpatternconverter.h   |  13 +-
 src/main/include/log4cxx/pattern/patternparser.h   |   3 +-
 src/main/include/log4cxx/patternlayout.h           |  77 +++++-
 src/test/cpp/pattern/CMakeLists.txt                |   6 +-
 .../cpp/pattern/colorstartpatternconvertertest.cpp | 265 +++++++++++++++++++++
 src/test/resources/witness/patternLayout.13        |  20 +-
 9 files changed, 623 insertions(+), 26 deletions(-)

diff --git a/src/main/cpp/colorendpatternconverter.cpp b/src/main/cpp/colorendpatternconverter.cpp
index 56f39e5f..9fa49793 100644
--- a/src/main/cpp/colorendpatternconverter.cpp
+++ b/src/main/cpp/colorendpatternconverter.cpp
@@ -47,6 +47,7 @@ void ColorEndPatternConverter::format(
 	Pool& p) const
 {
 
-	toAppendTo.append(LOG4CXX_STR("\x1B[39m"));
-
+	// Reset all colors on the output(code 0)
+	// Code 39 would be to reset colors only
+	toAppendTo.append(LOG4CXX_STR("\x1B[0m"));
 }
diff --git a/src/main/cpp/colorstartpatternconverter.cpp b/src/main/cpp/colorstartpatternconverter.cpp
index 02a8d779..72eb9f32 100644
--- a/src/main/cpp/colorstartpatternconverter.cpp
+++ b/src/main/cpp/colorstartpatternconverter.cpp
@@ -20,6 +20,7 @@
 #include <log4cxx/spi/loggingevent.h>
 #include <log4cxx/spi/location/locationinfo.h>
 #include <log4cxx/helpers/stringhelper.h>
+#include <log4cxx/private/patternconverter_priv.h>
 
 using namespace log4cxx;
 using namespace log4cxx::pattern;
@@ -28,9 +29,125 @@ using namespace log4cxx::helpers;
 
 IMPLEMENT_LOG4CXX_OBJECT(ColorStartPatternConverter)
 
+#define priv static_cast<ColorPatternConverterPrivate*>(m_priv.get())
+
+static LogString colorToANSISequence(const LogString& color, bool isForeground, Pool& pool){
+	int numberToConvert = 0;
+
+	if(StringHelper::equalsIgnoreCase(color, LOG4CXX_STR("BLACK"), LOG4CXX_STR("black"))){
+		numberToConvert = 30;
+	}else if(StringHelper::equalsIgnoreCase(color, LOG4CXX_STR("RED"), LOG4CXX_STR("red"))){
+		numberToConvert = 31;
+	}else if(StringHelper::equalsIgnoreCase(color, LOG4CXX_STR("GREEN"), LOG4CXX_STR("green"))){
+		numberToConvert = 32;
+	}else if(StringHelper::equalsIgnoreCase(color, LOG4CXX_STR("YELLOW"), LOG4CXX_STR("yellow"))){
+		numberToConvert = 33;
+	}else if(StringHelper::equalsIgnoreCase(color, LOG4CXX_STR("BLUE"), LOG4CXX_STR("blue"))){
+		numberToConvert = 34;
+	}else if(StringHelper::equalsIgnoreCase(color, LOG4CXX_STR("MAGENTA"), LOG4CXX_STR("magenta"))){
+		numberToConvert = 35;
+	}else if(StringHelper::equalsIgnoreCase(color, LOG4CXX_STR("CYAN"), LOG4CXX_STR("cyan"))){
+		numberToConvert = 36;
+	}else if(StringHelper::equalsIgnoreCase(color, LOG4CXX_STR("WHITE"), LOG4CXX_STR("white"))){
+		numberToConvert = 37;
+	}
+
+	if( numberToConvert == 0 ){
+		return LOG4CXX_STR("");
+	}
+	LogString ret;
+	if( isForeground == false ){
+		numberToConvert += 10;
+	}
+	StringHelper::toString(numberToConvert, pool, ret);
+	return ret;
+}
+
+static LogString graphicsModeToANSISequence(const LogString& graphicsMode, Pool& pool){
+	int numberToConvert = 0;
+
+	if(StringHelper::equalsIgnoreCase(graphicsMode, LOG4CXX_STR("BOLD"), LOG4CXX_STR("bold"))){
+		numberToConvert = 1;
+	}else if(StringHelper::equalsIgnoreCase(graphicsMode, LOG4CXX_STR("DIM"), LOG4CXX_STR("dim"))){
+		numberToConvert = 2;
+	}else if(StringHelper::equalsIgnoreCase(graphicsMode, LOG4CXX_STR("ITALIC"), LOG4CXX_STR("italic"))){
+		numberToConvert = 3;
+	}else if(StringHelper::equalsIgnoreCase(graphicsMode, LOG4CXX_STR("UNDERLINE"), LOG4CXX_STR("underline"))){
+		numberToConvert = 4;
+	}else if(StringHelper::equalsIgnoreCase(graphicsMode, LOG4CXX_STR("BLINKING"), LOG4CXX_STR("blinking"))){
+		numberToConvert = 5;
+	}else if(StringHelper::equalsIgnoreCase(graphicsMode, LOG4CXX_STR("INVERSE"), LOG4CXX_STR("inverse"))){
+		numberToConvert = 7;
+	}else if(StringHelper::equalsIgnoreCase(graphicsMode, LOG4CXX_STR("STRIKETHROUGH"), LOG4CXX_STR("strikethrough"))){
+		numberToConvert = 9;
+	}
+
+	if( numberToConvert == 0 ){
+		return LOG4CXX_STR("");
+	}
+	LogString ret;
+	StringHelper::toString(numberToConvert, pool, ret);
+	return ret;
+}
+
+static LogString convertSingleSequence(const LogString& sequence, Pool& pool){
+	LogString strInParens;
+	bool inParens = false;
+	bool hasParens = false;
+	size_t x = 0;
+
+	for(x = 0; x < sequence.length(); x++){
+		if( sequence[x] == '(' && !inParens ){
+			inParens = true;
+			hasParens = true;
+			continue;
+		}else if( sequence[x] == '(' && inParens ){
+			// Unbalanced parens - parse invalid
+			return LOG4CXX_STR("");
+		}
+
+		if( sequence[x] == ')' && inParens ){
+			hasParens = true;
+			inParens = false;
+			break;
+		}
+
+		if( inParens ){
+			strInParens.push_back(sequence[x]);
+		}
+	}
+
+	if( (x != (sequence.length() - 1) || inParens) && hasParens ){
+		// Unbalanced parens, or more data in the string than we expected - parse invalid
+		return LOG4CXX_STR("");
+	}
+
+	if(StringHelper::startsWith(sequence, "fg(")){
+		// Parse foreground
+		return colorToANSISequence(strInParens, true, pool);
+	}else if(StringHelper::startsWith(sequence, "bg(")){
+		return colorToANSISequence(strInParens, false, pool);
+	}else{
+		return graphicsModeToANSISequence(sequence, pool);
+	}
+}
+
+struct ColorStartPatternConverter::ColorPatternConverterPrivate : public PatternConverterPrivate
+{
+	ColorPatternConverterPrivate( const LogString& name, const LogString& style ) :
+		PatternConverterPrivate( name, style ){}
+
+	LogString m_fatalColor;
+	LogString m_errorColor;
+	LogString m_warnColor;
+	LogString m_infoColor;
+	LogString m_debugColor;
+	LogString m_traceColor;
+};
+
 ColorStartPatternConverter::ColorStartPatternConverter() :
-	LoggingEventPatternConverter(LOG4CXX_STR("Color Start"),
-		LOG4CXX_STR("colorStart"))
+	LoggingEventPatternConverter(std::make_unique<ColorPatternConverterPrivate>(LOG4CXX_STR("Color Start"),
+		LOG4CXX_STR("colorStart")))
 {
 }
 
@@ -52,30 +169,109 @@ void ColorStartPatternConverter::format(
 	switch (lvl->toInt())
 	{
 		case log4cxx::Level::FATAL_INT:
-			toAppendTo.append(LOG4CXX_STR("\x1B[35m")); //magenta
+			toAppendTo.append(priv->m_fatalColor);
 			break;
 
 		case log4cxx::Level::ERROR_INT:
-			toAppendTo.append(LOG4CXX_STR("\x1B[91m")); //red
+			toAppendTo.append(priv->m_errorColor);
 			break;
 
 		case log4cxx::Level::WARN_INT:
-			toAppendTo.append(LOG4CXX_STR("\x1B[33m")); //yellow
+			toAppendTo.append(priv->m_warnColor);
 			break;
 
 		case log4cxx::Level::INFO_INT:
-			toAppendTo.append(LOG4CXX_STR("\x1B[32m")); //green
+			toAppendTo.append(priv->m_infoColor);
 			break;
 
 		case log4cxx::Level::DEBUG_INT:
-			toAppendTo.append(LOG4CXX_STR("\x1B[36m")); //cyan
+			toAppendTo.append(priv->m_debugColor);
 			break;
 
 		case log4cxx::Level::TRACE_INT:
-			toAppendTo.append(LOG4CXX_STR("\x1B[34m")); //blue
+			toAppendTo.append(priv->m_traceColor);
 			break;
 
 		default:
 			break;
 	}
 }
+
+void ColorStartPatternConverter::setFatalColor(const LogString& color){
+	parseColor(color, &(priv->m_fatalColor));
+}
+
+void ColorStartPatternConverter::setErrorColor(const LogString& color){
+	parseColor(color, &(priv->m_errorColor));
+}
+
+void ColorStartPatternConverter::setWarnColor(const LogString& color){
+	parseColor(color, &(priv->m_warnColor));
+}
+
+void ColorStartPatternConverter::setInfoColor(const LogString& color){
+	parseColor(color, &(priv->m_infoColor));
+}
+
+void ColorStartPatternConverter::setDebugColor(const LogString& color){
+	parseColor(color, &(priv->m_debugColor));
+}
+
+void ColorStartPatternConverter::setTraceColor(const LogString& color){
+	parseColor(color, &(priv->m_traceColor));
+}
+
+void ColorStartPatternConverter::parseColor(const LogString& color, LogString* result){
+	LogString lower = StringHelper::toLowerCase(color);
+	Pool pool;
+
+	// If the color we are trying to parse is blank, clear our result
+	if(StringHelper::trim(color).empty() ||
+			StringHelper::equalsIgnoreCase(color,
+										   LOG4CXX_STR("NONE"),
+										   LOG4CXX_STR("none"))){
+		result->clear();
+		return;
+	}
+
+	if( StringHelper::startsWith(lower, "\\x1b") ){
+		if( color[color.size() - 1] != 'm' ){
+			// In order for this to be a valid ANSI escape sequence,
+			// it must end with an 'm'.  If it does not, reject.
+			return;
+		}
+		// We start with an escape sequence, copy the data over after the escape byte
+		result->clear();
+		result->append("\x1b");
+		for( size_t x = 4; x < color.size(); x++ ){
+			result->push_back(color[x]);
+		}
+	}else{
+		// We do not start with an escape sequence: try to parse color
+		// Escape sequence information:
+		// https://gist.github.com/fnky/458719343aabd01cfb17a3a4f7296797
+		// https://en.wikipedia.org/wiki/ANSI_escape_code
+		result->clear();
+		result->append("\x1b[");
+		LogString tmp;
+		for( size_t x = 0; x < color.size(); x++ ){
+			if(color[x] == '|' ){
+				LogString toAppend = convertSingleSequence(tmp, pool);
+				tmp.clear();
+				if(!toAppend.empty()){
+					result->push_back(';');
+					result->append(toAppend);
+				}
+			}else{
+				tmp.push_back(color[x]);
+			}
+		}
+		LogString toAppend = convertSingleSequence(tmp, pool);
+		tmp.clear();
+		if(!toAppend.empty()){
+			result->push_back(';');
+			result->append(toAppend);
+		}
+		result->append("m");
+	}
+}
diff --git a/src/main/cpp/patternlayout.cpp b/src/main/cpp/patternlayout.cpp
index 4d119f80..b2f6c56b 100644
--- a/src/main/cpp/patternlayout.cpp
+++ b/src/main/cpp/patternlayout.cpp
@@ -74,6 +74,13 @@ struct PatternLayout::PatternLayoutPrivate
 	 * Field widths and alignment corresponding to pattern converters.
 	 */
 	FormattingInfoList patternFields;
+
+	LogString m_fatalColor = LOG4CXX_STR("\\x1B[35m"); //magenta
+	LogString m_errorColor = LOG4CXX_STR("\\x1B[31m"); //red
+	LogString m_warnColor = LOG4CXX_STR("\\x1B[33m"); //yellow
+	LogString m_infoColor = LOG4CXX_STR("\\x1B[32m"); //green
+	LogString m_debugColor = LOG4CXX_STR("\\x1B[36m"); //cyan;
+	LogString m_traceColor = LOG4CXX_STR("\\x1B[34m"); //blue;
 };
 
 IMPLEMENT_LOG4CXX_OBJECT(PatternLayout)
@@ -129,6 +136,32 @@ void PatternLayout::setOption(const LogString& option, const LogString& value)
 			LOG4CXX_STR("conversionpattern")))
 	{
 		m_priv->conversionPattern = OptionConverter::convertSpecialChars(value);
+	}else if(StringHelper::equalsIgnoreCase(option,
+											LOG4CXX_STR("ERRORCOLOR"),
+											LOG4CXX_STR("errorcolor"))){
+		m_priv->m_errorColor = value;
+		LogLog::debug("Setting error color to ");
+		LogLog::debug(value);
+	}else if(StringHelper::equalsIgnoreCase(option,
+											LOG4CXX_STR("FATALCOLOR"),
+											LOG4CXX_STR("fatalcolor"))){
+		m_priv->m_fatalColor = value;
+	}else if(StringHelper::equalsIgnoreCase(option,
+											LOG4CXX_STR("WARNCOLOR"),
+											LOG4CXX_STR("warncolor"))){
+		m_priv->m_warnColor = value;
+	}else if(StringHelper::equalsIgnoreCase(option,
+											LOG4CXX_STR("INFOCOLOR"),
+											LOG4CXX_STR("infocolor"))){
+		m_priv->m_infoColor = value;
+	}else if(StringHelper::equalsIgnoreCase(option,
+											LOG4CXX_STR("DEBUGCOLOR"),
+											LOG4CXX_STR("debugcolor"))){
+		m_priv->m_debugColor = value;
+	}else if(StringHelper::equalsIgnoreCase(option,
+											LOG4CXX_STR("TRACECOLOR"),
+											LOG4CXX_STR("tracecolor"))){
+		m_priv->m_traceColor = value;
 	}
 }
 
@@ -168,7 +201,7 @@ void PatternLayout::activateOptions(Pool&)
 }
 
 #define RULES_PUT(spec, cls) \
-	specs.insert(PatternMap::value_type(LogString(LOG4CXX_STR(spec)), (PatternConstructor) cls ::newInstance))
+	specs.insert(PatternMap::value_type(LogString(LOG4CXX_STR(spec)), cls ::newInstance))
 
 
 log4cxx::pattern::PatternMap PatternLayout::getFormatSpecifiers()
@@ -180,7 +213,7 @@ log4cxx::pattern::PatternMap PatternLayout::getFormatSpecifiers()
 	RULES_PUT("C", ClassNamePatternConverter);
 	RULES_PUT("class", ClassNamePatternConverter);
 
-	RULES_PUT("Y", ColorStartPatternConverter);
+	specs.insert(PatternMap::value_type(LogString(LOG4CXX_STR("Y")), std::bind(&PatternLayout::createColorStartPatternConverter, this, std::placeholders::_1)));
 	RULES_PUT("y", ColorEndPatternConverter);
 
 	RULES_PUT("d", DatePatternConverter);
@@ -231,7 +264,18 @@ LogString PatternLayout::getConversionPattern() const
 	return m_priv->conversionPattern;
 }
 
+pattern::PatternConverterPtr PatternLayout::createColorStartPatternConverter(const std::vector<LogString>& options){
+	std::shared_ptr<ColorStartPatternConverter> colorPatternConverter = std::make_shared<ColorStartPatternConverter>();
+
+	colorPatternConverter->setErrorColor(m_priv->m_errorColor);
+	colorPatternConverter->setFatalColor(m_priv->m_fatalColor);
+	colorPatternConverter->setWarnColor(m_priv->m_warnColor);
+	colorPatternConverter->setInfoColor(m_priv->m_infoColor);
+	colorPatternConverter->setDebugColor(m_priv->m_debugColor);
+	colorPatternConverter->setTraceColor(m_priv->m_traceColor);
 
+	return colorPatternConverter;
+}
 
 
 
diff --git a/src/main/include/log4cxx/pattern/colorstartpatternconverter.h b/src/main/include/log4cxx/pattern/colorstartpatternconverter.h
index 3ce700ab..c84d0619 100644
--- a/src/main/include/log4cxx/pattern/colorstartpatternconverter.h
+++ b/src/main/include/log4cxx/pattern/colorstartpatternconverter.h
@@ -35,6 +35,8 @@ namespace pattern
 class LOG4CXX_EXPORT ColorStartPatternConverter
 	: public LoggingEventPatternConverter
 {
+	struct ColorPatternConverterPrivate;
+
 	public:
 		DECLARE_LOG4CXX_PATTERN(ColorStartPatternConverter)
 		BEGIN_LOG4CXX_CAST_MAP()
@@ -44,7 +46,6 @@ class LOG4CXX_EXPORT ColorStartPatternConverter
 
 		ColorStartPatternConverter();
 
-
 		/**
 		 * Obtains an instance of pattern converter.
 		 * @param options options, may be null.
@@ -58,6 +59,16 @@ class LOG4CXX_EXPORT ColorStartPatternConverter
 		void format(const spi::LoggingEventPtr& event,
 			LogString& toAppendTo,
 			helpers::Pool& p) const override;
+
+		void setFatalColor(const LogString& color);
+		void setErrorColor(const LogString& color);
+		void setWarnColor(const LogString& color);
+		void setInfoColor(const LogString& color);
+		void setDebugColor(const LogString& color);
+		void setTraceColor(const LogString& color);
+
+	private:
+		void parseColor(const LogString& color, LogString* result);
 };
 
 }
diff --git a/src/main/include/log4cxx/pattern/patternparser.h b/src/main/include/log4cxx/pattern/patternparser.h
index 2c328ae3..66aea74e 100644
--- a/src/main/include/log4cxx/pattern/patternparser.h
+++ b/src/main/include/log4cxx/pattern/patternparser.h
@@ -21,6 +21,7 @@
 
 #include <map>
 #include <vector>
+#include <functional>
 #include <log4cxx/helpers/class.h>
 #include <log4cxx/pattern/patternconverter.h>
 #include <log4cxx/pattern/formattinginfo.h>
@@ -30,7 +31,7 @@ namespace log4cxx
 namespace pattern
 {
 
-typedef PatternConverterPtr (*PatternConstructor)(const std::vector<LogString>& options);
+typedef std::function<PatternConverterPtr(const std::vector<LogString>& options)> PatternConstructor;
 typedef std::map<LogString, PatternConstructor> PatternMap;
 
 
diff --git a/src/main/include/log4cxx/patternlayout.h b/src/main/include/log4cxx/patternlayout.h
index f7b844d8..3aa1f748 100644
--- a/src/main/include/log4cxx/patternlayout.h
+++ b/src/main/include/log4cxx/patternlayout.h
@@ -236,13 +236,15 @@ LOG4CXX_LIST_DEF(FormattingInfoList, log4cxx::pattern::FormattingInfoPtr);
  *      <td align="center"><strong>Y</strong></td>
  *      <td>
  *          Used to wrap log with color. The <strong>Y</strong> is the start of a color block.
- *          Color will be taken from the log level.
+ *          Color will be taken from the log level.  The default colors are:
  *          - `TRACE` - blue
  *          - `DEBUG` - cyan
  *          - `INFO` - green
  *          - `WARN` - yellow
  *          - `ERROR` - red
  *          - `FATAL` - magenta
+ *
+ *			These colors are all customizable.
  *      </td>
  *  </tr>
  *  <tr>
@@ -354,6 +356,76 @@ LOG4CXX_LIST_DEF(FormattingInfoList, log4cxx::pattern::FormattingInfoPtr);
  *  The above text is largely inspired from Peter A. Darnell and Philip E. Margolis' highly
  *  recommended book "C -- a Software Engineering Approach", ISBN 0-387-97389-3.
  * </p>
+ *
+ * <h2>Colorizing log output</h2>
+ *
+ * In order to customize the colors for the %Y specifier, options have been added to the
+ * PatternLayout in order to let users define their own colors.  Foreground/background colors
+ * can be set, as well as other text effects.  A user can also set the ANSI escape pattern
+ * directly if they want.
+ *
+ * Each level can be set individually.  The configuration options for the levels are as follows:
+ * <ul>
+ * <li>FatalColor</li>
+ * <li>ErrorColor</li>
+ * <li>WarnColor</li>
+ * <li>InfoColor</li>
+ * <li>DebugColor</li>
+ * <li>ErrorColor</li>
+ * </ul>
+ *
+ * Foreground colors may be set by using fg(), background colors may be set by using bg(), and
+ * other options(such as bold) may be set as well.
+ *
+ * Available colors:
+ * <ul>
+ * <li>Black</li>
+ * <li>Red</li>
+ * <li>Green</li>
+ * <li>Yellow</li>
+ * <li>Blue</li>
+ * <li>Magenta</li>
+ * <li>Cyan</li>
+ * <li>White</li>
+ * </ul>
+ *
+ * Available graphics modes:
+ * <ul>
+ * <li>Bold</li>
+ * <li>Dim</li>
+ * <li>Italic</li>
+ * <li>Underline</li>
+ * <li>Blinking</li>
+ * <li>Inverse</li>
+ * <li>Strikethrough</li>
+ * </ul>
+ *
+ * Combining these together, we can configure our colors as we want, shown here in XML:
+ *
+ * Set the background color to red, make text blinking and bold:
+ * <pre>
+ * &lt;param name="FatalColor" value="bg(red)|blinking|bold"/&gt;
+ * </pre>
+ *
+ * Set the foreground color to blue:
+ * <pre>
+ * &lt;param name="FatalColor" value="fg(blue)"/&gt;
+ * </pre>
+ *
+ * Set the foreground color to white and the background color to black:
+ * <pre>
+ * &lt;param name="FatalColor" value="fg(white)|bg(black)"/&gt;
+ * </pre>
+ *
+ * Clear the formatting for the specified level(no formatting will be applied):
+ * <pre>
+ * &lt;param name="FatalColor" value="none"/&gt;
+ * </pre>
+ *
+ * Set a color based off on an ANSI escape sequence(equivalent to setting fg(red)):
+ * <pre>
+ * &lt;param name="FatalColor" value="\x1b[31m"/&gt;
+ * </pre>
  */
 class LOG4CXX_EXPORT PatternLayout : public Layout
 {
@@ -416,6 +488,9 @@ class LOG4CXX_EXPORT PatternLayout : public Layout
 
 	protected:
 		virtual log4cxx::pattern::PatternMap getFormatSpecifiers();
+
+	private:
+		pattern::PatternConverterPtr createColorStartPatternConverter(const std::vector<LogString>& options);
 };
 
 LOG4CXX_PTR_DEF(PatternLayout);
diff --git a/src/test/cpp/pattern/CMakeLists.txt b/src/test/cpp/pattern/CMakeLists.txt
index c0eb8aed..4ebf7509 100644
--- a/src/test/cpp/pattern/CMakeLists.txt
+++ b/src/test/cpp/pattern/CMakeLists.txt
@@ -15,5 +15,9 @@
 # limitations under the License.
 #
 
-add_executable(patternparsertestcase patternparsertestcase.cpp num343patternconverter.cpp)
+add_executable(patternparsertestcase
+    patternparsertestcase.cpp
+    num343patternconverter.cpp
+    colorstartpatternconvertertest.cpp
+)
 set(ALL_LOG4CXX_TESTS ${ALL_LOG4CXX_TESTS} patternparsertestcase PARENT_SCOPE)
diff --git a/src/test/cpp/pattern/colorstartpatternconvertertest.cpp b/src/test/cpp/pattern/colorstartpatternconvertertest.cpp
new file mode 100644
index 00000000..0bf6a662
--- /dev/null
+++ b/src/test/cpp/pattern/colorstartpatternconvertertest.cpp
@@ -0,0 +1,265 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <log4cxx/logger.h>
+#include <log4cxx/spi/loggingevent.h>
+#include <log4cxx/helpers/system.h>
+#include <log4cxx/level.h>
+
+#include "../testchar.h"
+#include "../insertwide.h"
+#include "../logunit.h"
+#include <log4cxx/spi/loggerrepository.h>
+
+#include <log4cxx/helpers/loglog.h>
+#include <log4cxx/pattern/colorstartpatternconverter.h>
+
+#define LOG4CXX_TEST 1
+#include <log4cxx/private/log4cxx_private.h>
+#include <thread>
+
+
+using namespace log4cxx;
+using namespace log4cxx::helpers;
+using namespace log4cxx::spi;
+using namespace log4cxx::pattern;
+
+
+LOGUNIT_CLASS(ColorStartPatternConverterTestCase)
+{
+	LOGUNIT_TEST_SUITE(ColorStartPatternConverterTestCase);
+	LOGUNIT_TEST(testParseForeground);
+	LOGUNIT_TEST(testParseBackground);
+	LOGUNIT_TEST(testParseForegroundAndBackground);
+	LOGUNIT_TEST(testParseUnbalancedParens1);
+	LOGUNIT_TEST(testParseUnbalancedParens2);
+	LOGUNIT_TEST(testParseUnbalancedParens3);
+	LOGUNIT_TEST(testANSICode);
+	LOGUNIT_TEST(testInvalidANSICode);
+	LOGUNIT_TEST(testUnterminatedANSICode);
+	LOGUNIT_TEST(testForegroundBackgroundBlink);
+	LOGUNIT_TEST(testClearColor);
+	LOGUNIT_TEST_SUITE_END();
+
+
+public:
+	void setUp()
+	{
+	}
+
+	void tearDown()
+	{
+	}
+
+	void testParseForeground()
+	{
+		ColorStartPatternConverter colorPatternConverter;
+		LogString outputString;
+		Pool p;
+
+		LoggingEventPtr event= LoggingEventPtr(new LoggingEvent(
+												   LOG4CXX_STR("org.foobar"),
+												   Level::getInfo(),
+												   LOG4CXX_STR("msg 1"),
+												   LOG4CXX_LOCATION));
+
+		colorPatternConverter.setInfoColor("fg(red)");
+		colorPatternConverter.format(event, outputString, p);
+
+		LOGUNIT_ASSERT_EQUAL("\x1b[;31m", outputString);
+	}
+
+	void testParseBackground()
+	{
+		ColorStartPatternConverter colorPatternConverter;
+		LogString outputString;
+		Pool p;
+
+		LoggingEventPtr event= LoggingEventPtr(new LoggingEvent(
+												   LOG4CXX_STR("org.foobar"),
+												   Level::getInfo(),
+												   LOG4CXX_STR("msg 1"),
+												   LOG4CXX_LOCATION));
+
+		colorPatternConverter.setInfoColor("bg(red)");
+		colorPatternConverter.format(event, outputString, p);
+
+		LOGUNIT_ASSERT_EQUAL("\x1b[;41m", outputString);
+	}
+
+	void testParseForegroundAndBackground()
+	{
+		ColorStartPatternConverter colorPatternConverter;
+		LogString outputString;
+		Pool p;
+
+		LoggingEventPtr event= LoggingEventPtr(new LoggingEvent(
+												   LOG4CXX_STR("org.foobar"),
+												   Level::getInfo(),
+												   LOG4CXX_STR("msg 1"),
+												   LOG4CXX_LOCATION));
+
+		colorPatternConverter.setInfoColor("fg(green)|bg(red)");
+		colorPatternConverter.format(event, outputString, p);
+
+		LOGUNIT_ASSERT_EQUAL("\x1b[;32;41m", outputString);
+	}
+
+	void testParseUnbalancedParens1(){
+		ColorStartPatternConverter colorPatternConverter;
+		LogString outputString;
+		Pool p;
+
+		LoggingEventPtr event= LoggingEventPtr(new LoggingEvent(
+												   LOG4CXX_STR("org.foobar"),
+												   Level::getInfo(),
+												   LOG4CXX_STR("msg 1"),
+												   LOG4CXX_LOCATION));
+
+		colorPatternConverter.setInfoColor("fg(green))");
+		colorPatternConverter.format(event, outputString, p);
+
+		LOGUNIT_ASSERT_EQUAL("\x1b[m", outputString);
+	}
+
+	void testParseUnbalancedParens2(){
+		ColorStartPatternConverter colorPatternConverter;
+		LogString outputString;
+		Pool p;
+
+		LoggingEventPtr event= LoggingEventPtr(new LoggingEvent(
+												   LOG4CXX_STR("org.foobar"),
+												   Level::getInfo(),
+												   LOG4CXX_STR("msg 1"),
+												   LOG4CXX_LOCATION));
+
+		colorPatternConverter.setInfoColor("fg(green");
+		colorPatternConverter.format(event, outputString, p);
+
+		LOGUNIT_ASSERT_EQUAL("\x1b[m", outputString);
+	}
+
+	void testParseUnbalancedParens3(){
+		ColorStartPatternConverter colorPatternConverter;
+		LogString outputString;
+		Pool p;
+
+		LoggingEventPtr event= LoggingEventPtr(new LoggingEvent(
+												   LOG4CXX_STR("org.foobar"),
+												   Level::getInfo(),
+												   LOG4CXX_STR("msg 1"),
+												   LOG4CXX_LOCATION));
+
+		colorPatternConverter.setInfoColor("fg(green|bg(red)");
+		colorPatternConverter.format(event, outputString, p);
+
+		// The background should be parsed correctly, but since the foreground
+		// is bad it will not work
+		LOGUNIT_ASSERT_EQUAL("\x1b[;41m", outputString);
+	}
+
+	void testANSICode(){
+		ColorStartPatternConverter colorPatternConverter;
+		LogString outputString;
+		Pool p;
+
+		LoggingEventPtr event= LoggingEventPtr(new LoggingEvent(
+												   LOG4CXX_STR("org.foobar"),
+												   Level::getInfo(),
+												   LOG4CXX_STR("msg 1"),
+												   LOG4CXX_LOCATION));
+
+		colorPatternConverter.setInfoColor("\\x1b[34;40m");
+		colorPatternConverter.format(event, outputString, p);
+
+		LOGUNIT_ASSERT_EQUAL("\x1b[34;40m", outputString);
+	}
+
+	void testInvalidANSICode(){
+		ColorStartPatternConverter colorPatternConverter;
+		LogString outputString;
+		Pool p;
+
+		LoggingEventPtr event= LoggingEventPtr(new LoggingEvent(
+												   LOG4CXX_STR("org.foobar"),
+												   Level::getInfo(),
+												   LOG4CXX_STR("msg 1"),
+												   LOG4CXX_LOCATION));
+
+		colorPatternConverter.setInfoColor("\\x1b");
+		colorPatternConverter.format(event, outputString, p);
+
+		LOGUNIT_ASSERT_EQUAL("", outputString);
+	}
+
+	void testUnterminatedANSICode(){
+		ColorStartPatternConverter colorPatternConverter;
+		LogString outputString;
+		Pool p;
+
+		LoggingEventPtr event= LoggingEventPtr(new LoggingEvent(
+												   LOG4CXX_STR("org.foobar"),
+												   Level::getInfo(),
+												   LOG4CXX_STR("msg 1"),
+												   LOG4CXX_LOCATION));
+
+		colorPatternConverter.setInfoColor("\\x1b[31");
+		colorPatternConverter.format(event, outputString, p);
+
+		LOGUNIT_ASSERT_EQUAL("", outputString);
+	}
+
+	void testForegroundBackgroundBlink(){
+		ColorStartPatternConverter colorPatternConverter;
+		LogString outputString;
+		Pool p;
+
+		LoggingEventPtr event= LoggingEventPtr(new LoggingEvent(
+												   LOG4CXX_STR("org.foobar"),
+												   Level::getInfo(),
+												   LOG4CXX_STR("msg 1"),
+												   LOG4CXX_LOCATION));
+
+		colorPatternConverter.setInfoColor("fg(white)|bg(black)|blinking");
+		colorPatternConverter.format(event, outputString, p);
+
+		LOGUNIT_ASSERT_EQUAL("\x1b[;37;40;5m", outputString);
+	}
+
+	void testClearColor(){
+		ColorStartPatternConverter colorPatternConverter;
+		LogString outputString;
+		Pool p;
+
+		LoggingEventPtr event= LoggingEventPtr(new LoggingEvent(
+												   LOG4CXX_STR("org.foobar"),
+												   Level::getInfo(),
+												   LOG4CXX_STR("msg 1"),
+												   LOG4CXX_LOCATION));
+
+		colorPatternConverter.setInfoColor("fg(white)|bg(black)|blinking");
+		colorPatternConverter.setInfoColor("");
+		colorPatternConverter.format(event, outputString, p);
+
+		LOGUNIT_ASSERT_EQUAL("", outputString);
+	}
+
+};
+
+#if !defined(_MSC_VER) || _MSC_VER > 1200
+	LOGUNIT_TEST_SUITE_REGISTRATION(ColorStartPatternConverterTestCase);
+#endif
diff --git a/src/test/resources/witness/patternLayout.13 b/src/test/resources/witness/patternLayout.13
index d6ba50a1..64b83e6e 100644
--- a/src/test/resources/witness/patternLayout.13
+++ b/src/test/resources/witness/patternLayout.13
@@ -1,10 +1,10 @@
-DEBUG - Message 0
-DEBUG - Message 0
-INFO  - Message 1
-INFO  - Message 1
-WARN  - Message 2
-WARN  - Message 2
-ERROR - Message 3
-ERROR - Message 3
-FATAL - Message 4
-FATAL - Message 4
\ No newline at end of file
+DEBUG - Message 0
+DEBUG - Message 0
+INFO  - Message 1
+INFO  - Message 1
+WARN  - Message 2
+WARN  - Message 2
+ERROR - Message 3
+ERROR - Message 3
+FATAL - Message 4
+FATAL - Message 4