apache / logging-log4cxxConditional Complexity

Intro

Conditional complexity (also called cyclomatic complexity) is a term used to measure the complexity of software. The term refers to the number of possible paths through a program function. A higher value ofter means higher maintenance and testing costs (infosecinstitute.com).
Conditional complexity is calculated by counting all conditions in the program that can affect the execution path (e.g. if statement, loops, switches, and/or operators, try and catch blocks...).
Conditional complexity is measured at the unit level (methods, functions...).
Units are classified in four categories based on the measured McCabe index: 1-5 (simple units), 6-10 (medium complex units), 11-25 (complex units), 26+ (very complex units).

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Conditional Complexity Overall

There are 1,267 units with 15,701 lines of code in units (46.6% of code).

1 very complex units (263 lines of code)
2 complex units (359 lines of code)
35 medium complex units (2,391 lines of code)
79 simple units (2,947 lines of code)
1,150 very simple units (9,741 lines of code)

Legend:

51+

26-50

11-25

6-10

1-5

Alternative Visuals

3D view of all units

Conditional Complexity per Extension

51+

26-50

11-25

6-10

1-5

Conditional Complexity per Logical Component

primary logical decomposition

51+

26-50

11-25

6-10

1-5

Most Complex Units

Top 50 most complex units

Unit	# lines	McCabe index	# params
void parse() in src/main/cpp/properties.cpp	263	70	2
bool MultiprocessRollingFileAppender::rolloverInternal() in src/main/cpp/multiprocessrollingfileappender.cpp	205	31	1
void PatternParser::parse() in src/main/cpp/patternparser.cpp	154	26	4
void SimpleDateFormat::addToken() in src/main/cpp/simpledateformat.cpp	94	24	4
LogString SyslogAppender::getFacilityString() in src/main/cpp/syslogappender.cpp	53	21	1
int SyslogAppender::getFacility() in src/main/cpp/syslogappender.cpp	92	21	1
void DOMConfigurator::parse() in src/main/cpp/domconfigurator.cpp	89	21	5
void ODBCAppender::ODBCAppenderPriv::setPreparedStatement() in src/main/cpp/odbcappender.cpp	103	18	2
bool GZCompressAction::execute() in src/main/cpp/gzcompressaction.cpp	82	16	1
LogString log4cxx::hexdump() in src/main/cpp/hexdump.cpp	67	16	3
AppenderPtr DOMConfigurator::parseAppender() in src/main/cpp/domconfigurator.cpp	99	15	5
unsigned int Transcoder::decode() in src/main/cpp/transcoder.cpp	72	15	2
bool RollingFileAppender::rolloverInternal() in src/main/cpp/rollingfileappender.cpp	114	15	1
bool ZipCompressAction::execute() in src/main/cpp/zipcompressaction.cpp	67	14	1
static LogString convertSingleSequence() in src/main/cpp/colorstartpatternconverter.cpp	33	14	2
AppenderPtr PropertyConfigurator::parseAppender() in src/main/cpp/propertyconfigurator.cpp	95	14	2
bool FixedWindowRollingPolicy::purge() in src/main/cpp/fixedwindowrollingpolicy.cpp	88	14	3
NameAbbreviatorPtr NameAbbreviator::getAbbreviator() in src/main/cpp/nameabbreviator.cpp	66	13	1
LogString System::getProperty() in src/main/cpp/system.cpp	73	13	1
ODBCAppender::SQLHDBC ODBCAppender::getConnection() in src/main/cpp/odbcappender.cpp	79	13	1
int CachedDateFormat::findMillisecondStart() in src/main/cpp/cacheddateformat.cpp	57	12	4
LevelPtr Level::toLevelLS() in src/main/cpp/level.cpp	53	12	2
CharsetEncoderPtr CharsetEncoder::getEncoder() in src/main/cpp/charsetencoder.cpp	34	12	1
RolloverDescriptionPtr TimeBasedRollingPolicy::rollover() in src/main/cpp/timebasedrollingpolicy.cpp	85	12	3
void SMTPAppender::setOption() in src/main/cpp/smtpappender.cpp	52	12	2
void JSONLayout::format() in src/main/cpp/jsonlayout.cpp	57	12	3
void JSONLayout::appendItem() in src/main/cpp/jsonlayout.cpp	72	12	2
void JSONLayout::appendSerializedLocationInfo() in src/main/cpp/jsonlayout.cpp	57	12	3
Filter::FilterDecision LocationInfoFilter::decide() in src/main/cpp/locationinfofilter.cpp	29	11	1
DateFormatPtr DatePatternConverter::getDateFormat() in src/main/cpp/datepatternconverter.cpp	65	11	1
static LogString colorToANSISequence() in src/main/cpp/colorstartpatternconverter.cpp	29	11	3
ResourceBundlePtr ResourceBundle::getBundle() in src/main/cpp/resourcebundle.cpp	76	11	2
const TimeZonePtr TimeZone::getTimeZone() in src/main/cpp/timezone.cpp	70	11	1
void SyslogAppender::append() in src/main/cpp/syslogappender.cpp	74	11	2
void PropertyConfigurator::parseLogger() in src/main/cpp/propertyconfigurator.cpp	61	11	6
void TimeBasedRollingPolicy::activateOptions() in src/main/cpp/timebasedrollingpolicy.cpp	56	11	1
void JSONLayout::appendSerializedMDC() in src/main/cpp/jsonlayout.cpp	45	11	2
void AsyncAppender::append() in src/main/cpp/asyncappender.cpp	53	11	2
static int strcat_s() in src/main/include/log4cxx/private/string_c11.h	24	10	3
void TelnetAppender::acceptConnections() in src/main/cpp/telnetappender.cpp	63	10	0
void ColorStartPatternConverter::parseColor() in src/main/cpp/colorstartpatternconverter.cpp	44	10	2
void XMLLayout::format() in src/main/cpp/xmllayout.cpp	92	10	3
void FileAppender::setFileInternal() in src/main/cpp/fileappender.cpp	71	10	5
void Transform::appendEscapingTags() in src/main/cpp/transform.cpp	49	10	2
long OptionConverter::toFileSize() in src/main/cpp/optionconverter.cpp	27	10	2
void MultiprocessRollingFileAppender::activateOptions() in src/main/cpp/multiprocessrollingfileappender.cpp	63	10	1
void MultiprocessRollingFileAppender::subAppend() in src/main/cpp/multiprocessrollingfileappender.cpp	47	10	2
void RollingFileAppender::activateOptions() in src/main/cpp/rollingfileappender.cpp	67	10	1
CharsetDecoderPtr CharsetDecoder::getDecoder() in src/main/cpp/charsetdecoder.cpp	26	10	1
void CachedDateFormat::format() in src/main/cpp/cacheddateformat.cpp	36	9	3