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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

25% duplication:

161,009 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
40,610 duplicated lines

124,692 duplicates

Duplication per Extension

Duplication per Component (primary)

Duplication Between Components (50+ lines)

Download: SVG DOT (open online Graphviz editor)

From Component --> To Component	Duplicated Lines	File Pairs	Details
pcre (1%) --> ragel/src (49%)	872	1 file pair	details...
ragel/src/aapl (12%) --> ragel/src/ragel (<1%)	704	1 file pair	details...
ragel/src/aapl (11%) --> ragel/src/contrib (60%)	646	1 file pair	details...
pcre (1%) --> ragel/src/ragel (<1%)	646	2 file pairs	details...
ragel/src/contrib (59%) --> ragel/src/doc (7%)	640	1 file pair	details...
ragel/src/aapl (10%) --> ragel/src/doc (7%)	630	1 file pair	details...
ragel/src (33%) --> ragel/src/aapl (10%)	590	1 file pair	details...
ragel/src/contrib (53%) --> ragel/src/ragel (<1%)	576	1 file pair	details...
ragel/src (32%) --> ragel/src/ragel (<1%)	576	1 file pair	details...
ragel/src (32%) --> ragel/src/doc (6%)	574	1 file pair	details...
ragel/src/doc (6%) --> ragel/src/ragel (<1%)	560	1 file pair	details...
pcre (<1%) --> ragel/src/doc (6%)	552	1 file pair	details...
pcre (<1%) --> ragel/src/aapl (8%)	494	1 file pair	details...
ragel/src (27%) --> ragel/src/contrib (44%)	478	1 file pair	details...
pcre (<1%) --> ragel/src/contrib (34%)	366	1 file pair	details...
libmbfl/filters (<1%) --> libmbfl/mbfl (1%)	102	14 file pairs	details...

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Longest Duplicates

The list of 50 longest duplicates.

See data for all 124,692 duplicates...

Size	#	Folders	Files	Lines	Code
432	x 2	libmbfl/filters libmbfl/filters	unicode_table_jis.h unicode_table_jis2004.h	695:1196 (8%) 645:1111 (9%)	view
378	x 2	libmbfl/filters libmbfl/filters	unicode_table_jis.h unicode_table_jis2004.h	247:686 (7%) 229:637 (8%)	view
126	x 2	pcre/doc/html pcre/doc/html	pcrepattern.html pcresyntax.html	715:840 (4%) 168:293 (25%)	view
121	x 2	ragel/src/aapl ragel/src/ragel	in Makefile.in Makefile.in	111:231 (28%) 180:300 (8%)	view
104	x 2	ragel/src/contrib ragel/src/doc	in Makefile.in Makefile.in	107:210 (29%) 162:265 (20%)	view
103	x 2	ragel/src/doc ragel/src/ragel	in Makefile.in Makefile.in	163:265 (20%) 198:300 (7%)	view
103	x 2	ragel/src/contrib ragel/src/ragel	in Makefile.in Makefile.in	108:210 (29%) 198:300 (7%)	view
103	x 2	ragel/src/aapl ragel/src/doc	in Makefile.in Makefile.in	129:231 (24%) 163:265 (20%)	view
103	x 2	ragel/src/aapl ragel/src/contrib	in Makefile.in Makefile.in	129:231 (24%) 108:210 (29%)	view
102	x 2	ragel/src ragel/src/doc	in Makefile.in Makefile.in	220:321 (13%) 164:265 (20%)	view
102	x 2	ragel/src ragel/src/ragel	in Makefile.in Makefile.in	220:321 (13%) 199:300 (7%)	view
102	x 2	ragel/src ragel/src/aapl	in Makefile.in Makefile.in	220:321 (13%) 130:231 (24%)	view
102	x 2	ragel/src ragel/src/contrib	in Makefile.in Makefile.in	220:321 (13%) 109:210 (29%)	view
94	x 2	libmbfl/filters libmbfl/filters	mbfilter_utf7.c mbfilter_utf7imap.c	134:241 (28%) 107:214 (36%)	view
87	x 2	ragel/src/ragel ragel/src/ragel	cdtable.cpp rubytable.cpp	755:869 (12%) 910:1024 (13%)	view
87	x 2	ragel/src/ragel ragel/src/ragel	cstable.cpp rubytable.cpp	707:821 (12%) 910:1024 (13%)	view
87	x 2	ragel/src/ragel ragel/src/ragel	cdtable.cpp mltable.cpp	755:869 (12%) 694:808 (12%)	view
87	x 2	ragel/src/ragel ragel/src/ragel	cdtable.cpp cstable.cpp	755:869 (12%) 707:821 (12%)	view
87	x 2	ragel/src/ragel ragel/src/ragel	mltable.cpp rubytable.cpp	694:808 (12%) 910:1024 (13%)	view
87	x 2	ragel/src/ragel ragel/src/ragel	cstable.cpp mltable.cpp	707:821 (12%) 694:808 (12%)	view
86	x 2	ragel/src/ragel ragel/src/ragel	cstable.cpp javacodegen.cpp	707:818 (12%) 862:973 (8%)	view
86	x 2	ragel/src/ragel ragel/src/ragel	javacodegen.cpp rubytable.cpp	862:973 (8%) 910:1021 (13%)	view
86	x 2	ragel/src/ragel ragel/src/ragel	cdtable.cpp javacodegen.cpp	755:866 (12%) 862:973 (8%)	view
86	x 2	ragel/src/ragel ragel/src/ragel	javacodegen.cpp mltable.cpp	862:973 (8%) 694:805 (12%)	view
84	x 2	ragel/src/ragel ragel/src/ragel	mlflat.cpp mltable.cpp	789:902 (15%) 1003:1116 (12%)	view
82	x 2	ragel/src/ragel ragel/src/ragel	cdfgoto.cpp csfgoto.cpp	181:295 (52%) 181:295 (52%)	view
82	x 2	ragel/src/ragel ragel/src/ragel	cdftable.cpp mlftable.cpp	183:290 (31%) 183:290 (30%)	view
82	x 2	ragel/src/ragel ragel/src/ragel	csftable.cpp mlftable.cpp	183:290 (31%) 183:290 (30%)	view
82	x 2	ragel/src/ragel ragel/src/ragel	cdftable.cpp csftable.cpp	183:290 (31%) 183:290 (31%)	view
82	x 2	ragel/src/ragel ragel/src/ragel	csftable.cpp rubyftable.cpp	183:290 (31%) 252:359 (24%)	view
82	x 2	ragel/src/ragel ragel/src/ragel	cdftable.cpp rubyftable.cpp	183:290 (31%) 252:359 (24%)	view
82	x 2	ragel/src/ragel ragel/src/ragel	mlftable.cpp rubyftable.cpp	183:290 (30%) 252:359 (24%)	view
77	x 2	libmbfl/filters libmbfl/filters	mbfilter_cp5022x.c mbfilter_jis.c	286:408 (8%) 165:287 (16%)	view
77	x 2	ragel/src/aapl ragel/src/ragel	in Makefile.in Makefile.in	275:357 (18%) 1321:1403 (5%)	view
73	x 2	ragel/src ragel/src/contrib	in Makefile.in Makefile.in	1:78 (9%) 1:77 (20%)	view
73	x 2	ragel/src/contrib ragel/src/ragel	in Makefile.in Makefile.in	1:77 (20%) 1:78 (5%)	view
73	x 2	ragel/src ragel/src/aapl	in Makefile.in Makefile.in	1:78 (9%) 1:78 (17%)	view
73	x 2	ragel/src/aapl ragel/src/contrib	in Makefile.in Makefile.in	1:78 (17%) 1:77 (20%)	view
73	x 2	ragel/src/aapl ragel/src/ragel	in Makefile.in Makefile.in	1:78 (17%) 1:78 (5%)	view
73	x 2	ragel/src ragel/src/ragel	in Makefile.in Makefile.in	1:78 (9%) 1:78 (5%)	view
70	x 2	pcre pcre	pcre_compile.c pcre_compile.c	2138:2221 (1%) 2283:2366 (1%)	view
70	x 2	ragel/src/ragel ragel/src/ragel	cdfflat.cpp csfflat.cpp	266:361 (30%) 270:365 (30%)	view
69	x 2	ragel/src/ragel ragel/src/ragel	mlfflat.cpp mlftable.cpp	319:417 (29%) 362:460 (25%)	view
69	x 2	libmbfl/filters libmbfl/filters	mbfilter_cp5022x.c mbfilter_jis.c	969:1062 (7%) 491:584 (15%)	view
68	x 2	ragel/src/ragel ragel/src/ragel	cdflat.cpp rubyflat.cpp	544:633 (12%) 569:658 (12%)	view
68	x 2	ragel/src/ragel ragel/src/ragel	csflat.cpp mlflat.cpp	553:642 (12%) 546:635 (12%)	view
68	x 2	ragel/src/ragel ragel/src/ragel	mlflat.cpp rubyflat.cpp	546:635 (12%) 569:658 (12%)	view
68	x 2	ragel/src/ragel ragel/src/ragel	csflat.cpp rubyflat.cpp	553:642 (12%) 569:658 (12%)	view
68	x 2	ragel/src/ragel ragel/src/ragel	cdflat.cpp mlflat.cpp	544:633 (12%) 546:635 (12%)	view
68	x 2	ragel/src/ragel ragel/src/ragel	cdflat.cpp csflat.cpp	544:633 (12%) 553:642 (12%)	view

Duplicated Units

The list of top 50 duplicated units.

See data for all 101 unit duplicates...

Size	#	Folders	Files	Lines	Code
98	x 3	ragel/src/ragel ragel/src/ragel ragel/src/ragel	cdtable.cpp cstable.cpp rubytable.cpp	751:870 703:822 906:1025	view
94	x 2	ragel/src/ragel ragel/src/ragel	csfgoto.cpp cdfgoto.cpp	179:296 179:296	view
92	x 3	ragel/src/ragel ragel/src/ragel ragel/src/ragel	csftable.cpp rubyftable.cpp cdftable.cpp	181:291 249:360 181:291	view
77	x 2	libmbfl/filters libmbfl/filters	mbfilter_jis.c mbfilter_cp5022x.c	489:585 967:1063	view
76	x 3	ragel/src/ragel ragel/src/ragel ragel/src/ragel	rubyflat.cpp csflat.cpp cdflat.cpp	565:659 549:643 540:634	view
74	x 3	ragel/src/ragel ragel/src/ragel ragel/src/ragel	mlgoto.cpp csgoto.cpp cdgoto.cpp	256:349 255:348 255:348	view
70	x 3	ragel/src/ragel ragel/src/ragel ragel/src/ragel	rubyfflat.cpp csfflat.cpp cdfflat.cpp	235:320 152:237 152:237	view
61	x 2	ragel/src/ragel ragel/src/ragel	csipgoto.cpp cdipgoto.cpp	362:438 368:444	view
60	x 2	libmbfl/filters libmbfl/filters	mbfilter_jis.c mbfilter_cp5022x.c	587:661 1065:1139	view
47	x 2	ragel/src/ragel ragel/src/ragel	mltable.cpp cstable.cpp	865:918 881:934	view
44	x 2	libmbfl/filters libmbfl/filters	mbfilter_euc_jp.c mbfilter_euc_jp_win.c	278:328 382:432	view
39	x 2	ragel/src/ragel ragel/src/ragel	cdsplit.cpp cssplit.cpp	382:435 374:427	view
36	x 2	ragel/src/ragel ragel/src/ragel	mlflat.cpp csflat.cpp	645:700 645:700	view
34	x 2	ragel/src/ragel ragel/src/ragel	cdsplit.cpp cdipgoto.cpp	61:108 162:209	view
31	x 2	ragel/src/ragel ragel/src/ragel	cdsplit.cpp cssplit.cpp	482:525 474:517	view
30	x 2	ragel/src/ragel ragel/src/ragel	csipgoto.cpp cssplit.cpp	160:203 61:104	view
26	x 3	ragel/src/ragel ragel/src/ragel ragel/src/ragel	rbxgoto.cpp csgoto.cpp cdgoto.cpp	665:696 627:658 627:658	view
24	x 3	ragel/src/ragel ragel/src/ragel ragel/src/ragel	goipgoto.cpp csipgoto.cpp cdipgoto.cpp	354:392 317:355 323:361	view
23	x 2	ragel/src/ragel ragel/src/ragel	cdsplit.cpp cssplit.cpp	306:335 298:327	view
22	x 2	libmbfl/filters libmbfl/filters	mbfilter_euc_cn.c mbfilter_euc_kr.c	216:242 230:256	view
22	x 5	ragel/src/ragel ragel/src/ragel ragel/src/ragel ragel/src/ragel ragel/src/ragel	rubycodegen.cpp gocodegen.cpp cdcodegen.cpp mlcodegen.cpp cscodegen.cpp	690:732 659:701 949:991 687:729 767:809	view
20	x 2	libmbfl/filters libmbfl/filters	mbfilter_ucs4.c mbfilter_byte4.c	186:208 93:115	view
20	x 2	libmbfl/filters libmbfl/filters	mbfilter_ucs4.c mbfilter_byte4.c	232:254 126:148	view
20	x 2	ragel/src/ragel ragel/src/ragel	csfgoto.cpp cdfgoto.cpp	153:177 153:177	view
19	x 2	ragel/src/ragel ragel/src/ragel	rubyfflat.cpp rubyftable.cpp	68:91 79:102	view
19	x 2	ragel/src/ragel ragel/src/ragel	rubyflat.cpp rubytable.cpp	439:462 84:107	view
18	x 6	ragel/src/ragel ragel/src/ragel ragel/src/ragel ragel/src/ragel ragel/src/ragel ragel/src/ragel	rubycodegen.cpp cdtable.cpp javacodegen.cpp mltable.cpp cstable.cpp gotable.cpp	736:761 30:55 392:417 30:55 30:55 33:58	view
18	x 5	ragel/src/ragel ragel/src/ragel ragel/src/ragel ragel/src/ragel ragel/src/ragel	goftable.cpp csftable.cpp rubyftable.cpp mlftable.cpp cdftable.cpp	32:57 30:55 530:555 30:55 30:55	view
17	x 2	ragel/src/ragel ragel/src/ragel	javacodegen.cpp cscodegen.cpp	1516:1540 362:386	view
16	x 2	libmbfl/filters libmbfl/filters	mbfilter_sjis_open.c mbfilter_cp932.c	330:348 330:348	view
16	x 2	ragel/src/ragel ragel/src/ragel	rubyflat.cpp rubytable.cpp	418:437 63:82	view
16	x 2	pcre/sljit pcre/sljit	sljitNativeARM_64.c sljitNativeARM_T2_32.c	885:906 978:999	view
15	x 6	ragel/src/ragel ragel/src/ragel ragel/src/ragel ragel/src/ragel ragel/src/ragel ragel/src/ragel	rubycodegen.cpp gocodegen.cpp javacodegen.cpp cdcodegen.cpp mlcodegen.cpp cscodegen.cpp	368:385 603:620 264:281 627:644 536:553 606:623	view
15	x 3	ragel/src/ragel ragel/src/ragel ragel/src/ragel	rubycodegen.cpp cdcodegen.cpp cscodegen.cpp	420:440 646:666 625:645	view
15	x 2	ragel/src/ragel ragel/src/ragel	rubyfflat.cpp rubyftable.cpp	48:66 59:77	view
15	x 2	ragel/src/ragel ragel/src/ragel	rubyflat.cpp rubytable.cpp	464:482 109:127	view
14	x 2	ragel/src/ragel ragel/src/ragel	rubyfflat.cpp rubyftable.cpp	93:110 104:121	view
14	x 2	ragel/src/ragel ragel/src/ragel	cdsplit.cpp cssplit.cpp	437:456 429:448	view
14	x 2	ragel/src/ragel ragel/src/ragel	cdcodegen.cpp cscodegen.cpp	51:70 48:67	view
14	x 2	ragel/src/ragel ragel/src/ragel	mlcodegen.cpp cscodegen.cpp	91:107 97:113	view
13	x 4	ragel/src/ragel ragel/src/ragel ragel/src/ragel ragel/src/ragel	javacodegen.cpp cdcodegen.cpp mlcodegen.cpp cscodegen.cpp	1625:1643 588:606 463:481 567:585	view
12	x 2	libmbfl/filters libmbfl/filters	mbfilter_byte2.c mbfilter_ucs2.c	91:105 167:181	view
12	x 2	libmbfl/filters libmbfl/filters	mbfilter_byte2.c mbfilter_ucs2.c	114:128 203:217	view
12	x 2	ragel/src/ragel ragel/src/ragel	gocodegen.cpp cdcodegen.cpp	322:335 349:362	view
12	x 3	ragel/src/ragel ragel/src/ragel ragel/src/ragel	goipgoto.cpp csipgoto.cpp cdipgoto.cpp	336:351 299:314 305:320	view
11	x 2	ragel/src/ragel ragel/src/ragel	rubycodegen.cpp javacodegen.cpp	304:319 1260:1274	view
11	x 2	ragel/src/ragel ragel/src/ragel	cdsplit.cpp cssplit.cpp	458:479 450:471	view
11	x 3	ragel/src/ragel ragel/src/ragel ragel/src/ragel	mlgoto.cpp csgoto.cpp cdgoto.cpp	241:254 240:253 240:253	view
11	x 2	ragel/src/ragel ragel/src/ragel	rubyflat.cpp rubytable.cpp	489:501 49:61	view
11	x 2	ragel/src/ragel ragel/src/ragel	mltable.cpp cstable.cpp	1119:1131 1111:1123	view