apache / logging-log4cxx

Intro

For duplication, we look at places in code where there are 6 or more lines of code that are exactly the same.
Before duplication is calculated, the code is cleaned to remove empty lines, comments, and frequently duplicated constructs such as imports.
You should aim at having as little as possible (<5%) of duplicated code as high-level of duplication can lead to maintenance difficulties, poor factoring, and logical contradictions.

Learn more...

Duplication Overall

4% duplication:

28,754 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
1,408 duplicated lines

163 duplicates

dependency graphs: 2D graph | 3D graph | 3D graph (with duplicates)...

Duplication per Extension

Duplication per Component (primary)

Longest Duplicates

The list of 50 longest duplicates.

See data for all 163 duplicates...

Size	#	Folders	Files	Lines	Code
21	x 2	src/fuzzers/cpp src/main/cpp	PatternParserFuzzer.cpp patternlayout.cpp	72:103 (35%) 233:264 (15%)	view
19	x 2	src/site/markdown/development src/site/markdown	in build-cmake.md.in download.md.in	2:22 (12%) 2:22 (34%)	view
19	x 2	ROOT ROOT	in liblog4cxx-qt.pc.in liblog4cxx.pc.in	1:20 (79%) 1:20 (79%)	view
16	x 2	src/main/cpp src/main/cpp	dbappender.cpp odbcappender.cpp	78:96 (11%) 149:167 (4%)	view
15	x 2	src/main/include/log4cxx src/main/include/log4cxx/private	in log4cxx.h.in log4cxx_private.h.in	1:15 (13%) 1:15 (27%)	view
15	x 2	src/main/cpp src/main/cpp	logstream.cpp logstream.cpp	308:324 (5%) 437:453 (5%)	view
14	x 2	ROOT src/site/doxy	in liblog4cxx.pc.in Doxyfile.in	1:14 (58%) 1:14 (<1%)	view
14	x 2	ROOT src/site/doxy	in liblog4cxx-qt.pc.in Doxyfile.in	1:14 (58%) 1:14 (<1%)	view
13	x 2	src/site/doxy src/site/doxy	DoxygenLayout.xml DoxygenLayout.xml	159:171 (7%) 178:190 (7%)	view
13	x 2	src/main/abi-symbols src/main/abi-symbols	abi-dumper.pl abi-dumper.pl	2794:2808 (<1%) 2822:2836 (<1%)	view
12	x 2	src/main/include/log4cxx src/main/include/log4cxx	stream.h stream.h	397:415 (7%) 508:526 (7%)	view
12	x 2	src/main/abi-symbols src/main/abi-symbols	abi-dumper.pl abi-dumper.pl	2887:2899 (<1%) 2908:2920 (<1%)	view
12	x 2	src/main/include/log4cxx src/main/include/log4cxx	stream.h stream.h	293:312 (7%) 397:415 (7%)	view
12	x 2	src/main/include/log4cxx src/main/include/log4cxx	stream.h stream.h	293:312 (7%) 508:526 (7%)	view
12	x 2	src/main/abi-symbols src/main/abi-symbols	abi-dumper.pl abi-dumper.pl	983:996 (<1%) 1242:1255 (<1%)	view
12	x 2	src/main/include/log4cxx/helpers src/main/include/log4cxx/helpers	messagebuffer.h messagebuffer.h	84:153 (7%) 744:814 (7%)	view
11	x 2	src/main/cpp src/main/cpp	multiprocessrollingfileappender.cpp multiprocessrollingfileappender.cpp	289:307 (5%) 339:357 (5%)	view
10	x 2	src/main/cpp src/main/cpp	domconfigurator.cpp domconfigurator.cpp	1001:1015 (1%) 1043:1057 (1%)	view
10	x 2	src/main/cpp src/main/cpp	domconfigurator.cpp domconfigurator.cpp	1001:1015 (1%) 1022:1036 (1%)	view
10	x 2	src/main/cpp src/main/cpp	domconfigurator.cpp domconfigurator.cpp	602:619 (1%) 701:718 (1%)	view
10	x 2	src/main/cpp src/main/cpp	domconfigurator.cpp domconfigurator.cpp	1022:1036 (1%) 1043:1057 (1%)	view
10	x 2	src/main/cpp src/main/cpp	rollingfileappender.cpp rollingfileappender.cpp	303:318 (4%) 365:380 (4%)	view
10	x 2	src/main/cpp src/main/cpp	ndc.cpp ndc.cpp	260:277 (5%) 317:334 (5%)	view
9	x 2	src/main/abi-symbols src/main/abi-symbols	abi-dumper.pl abi-dumper.pl	956:965 (<1%) 1209:1218 (<1%)	view
9	x 2	src/main/abi-symbols src/main/abi-symbols	abi-dumper.pl abi-dumper.pl	946:955 (<1%) 1198:1207 (<1%)	view
9	x 2	src/main/cpp src/main/cpp	patternparser.cpp patternparser.cpp	238:252 (4%) 284:298 (4%)	view
9	x 2	src/main/cpp src/main/cpp	patternparser.cpp patternparser.cpp	204:221 (4%) 284:298 (4%)	view
9	x 2	src/main/cpp src/main/cpp	patternparser.cpp patternparser.cpp	204:221 (4%) 238:252 (4%)	view
8	x 2	src/main/include/log4cxx/rolling src/main/include/log4cxx/rolling	fixedwindowrollingpolicy.h timebasedrollingpolicy.h	127:138 (22%) 171:182 (18%)	view
8	x 2	src/main/cpp src/main/cpp	ndc.cpp ndc.cpp	193:208 (4%) 282:297 (4%)	view
8	x 2	src/main/abi-symbols src/main/abi-symbols	abi-dumper.pl abi-dumper.pl	3888:3895 (<1%) 3910:3917 (<1%)	view
8	x 2	src/main/cpp src/main/cpp	ndc.cpp ndc.cpp	282:297 (4%) 339:354 (4%)	view
8	x 2	src/site/doxy src/site/doxy	DoxygenLayout.xml DoxygenLayout.xml	102:110 (4%) 131:139 (4%)	view
8	x 2	src/main/abi-symbols src/main/abi-symbols	abi-dumper.pl abi-dumper.pl	2490:2499 (<1%) 2505:2513 (<1%)	view
8	x 2	src/main/abi-symbols src/main/abi-symbols	abi-dumper.pl abi-dumper.pl	2811:2820 (<1%) 2839:2848 (<1%)	view
8	x 2	src/main/cpp src/main/cpp	charsetencoder.cpp charsetencoder.cpp	225:236 (2%) 269:280 (2%)	view
8	x 2	src/main/cpp src/main/cpp	gzcompressaction.cpp zipcompressaction.cpp	99:116 (11%) 80:97 (12%)	view
8	x 2	src/main/cpp src/main/cpp	ndc.cpp ndc.cpp	193:208 (4%) 339:354 (4%)	view
7	x 2	src/main/abi-symbols src/main/abi-symbols	abi-dumper.pl abi-dumper.pl	6118:6124 (<1%) 6200:6206 (<1%)	view
7	x 2	src/main/cpp src/main/cpp	properties.cpp properties.cpp	214:226 (2%) 313:325 (2%)	view
7	x 2	src/main/cpp src/main/cpp	properties.cpp properties.cpp	170:181 (2%) 309:320 (2%)	view
7	x 2	src/main/include/log4cxx/pattern src/main/include/log4cxx/pattern	lineseparatorpatternconverter.h literalpatternconverter.h	57:64 (35%) 52:59 (36%)	view
7	x 2	src/main/include/log4cxx/pattern src/main/include/log4cxx/pattern	classnamepatternconverter.h shortfilelocationpatternconverter.h	48:63 (43%) 48:63 (41%)	view
7	x 2	src/main/cpp src/main/cpp	properties.cpp properties.cpp	64:76 (2%) 174:186 (2%)	view
7	x 2	src/main/cpp src/main/cpp	charsetencoder.cpp charsetencoder.cpp	240:254 (2%) 284:298 (2%)	view
7	x 2	src/main/abi-symbols src/main/abi-symbols	abi-dumper.pl abi-dumper.pl	6533:6539 (<1%) 6541:6547 (<1%)	view
7	x 2	src/main/abi-symbols src/main/abi-symbols	abi-dumper.pl abi-dumper.pl	6523:6529 (<1%) 6533:6539 (<1%)	view
7	x 2	src/main/cpp src/main/cpp	socketappenderskeleton.cpp socketappenderskeleton.cpp	154:160 (4%) 224:230 (4%)	view
7	x 2	src/cmake src/cmake	FindAPR-Util.cmake FindAPR.cmake	19:27 (9%) 18:25 (8%)	view
7	x 2	src/main/cpp src/main/cpp	transcoder.cpp transcoder.cpp	47:58 (2%) 70:81 (2%)	view

Duplicated Units

The list of top 1 duplicated units.

See data for all 1 unit duplicate

Size	#	Folders	Files	Lines	Code
8	x 2	src/main/cpp src/main/cpp	classnamepatternconverter.cpp loggerpatternconverter.cpp	37:47 37:47	view