apache / apr-util - Duplication

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

21% duplication:

28,819 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
6,058 duplicated lines

2,303 duplicates

dependency graphs: 2D graph | 3D graph | 3D graph (with 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
memcache (11%) --> redis (14%)	248	1 file pair	details...
include (3%) --> ldap (3%)	207	2 file pairs	details...

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Show more details on duplication between components...

Longest Duplicates

The list of 50 longest duplicates.

See data for all 2,303 duplicates...

Size	#	Folders	Files	Lines	Code
67	x 2	memcache redis	apr_memcache.c apr_redis.c	544:619 (6%) 502:577 (7%)	view
47	x 2	ldap ldap	apr_ldap.c apr_ldap_option.c	559:628 (2%) 302:373 (13%)	view
43	x 2	ldap ldap	apr_ldap.c apr_ldap_option.c	661:724 (2%) 581:644 (12%)	view
41	x 2	crypto crypto	apr_crypto_commoncrypto.c apr_crypto_nss.c	250:338 (5%) 377:465 (4%)	view
37	x 2	dbd dbd	apr_dbd_pgsql.c apr_dbd_pgsql.c	416:465 (4%) 638:686 (4%)	view
34	x 2	dbd dbd	apr_dbd_mysql.c apr_dbd_oracle.c	172:222 (3%) 286:336 (2%)	view
29	x 2	crypto crypto	apr_crypto_commoncrypto.c apr_crypto_commoncrypto.c	822:869 (3%) 1045:1092 (3%)	view
29	x 2	crypto crypto	apr_crypto_nss.c apr_crypto_nss.c	1045:1086 (3%) 1246:1287 (3%)	view
25	x 2	dbd dbd	apr_dbd_oracle.c apr_dbd_oracle.c	1146:1173 (1%) 1533:1560 (1%)	view
24	x 2	ldap ldap	apr_ldap.c apr_ldap.c	3365:3405 (1%) 3449:3489 (1%)	view
23	x 2	jose jose	apr_jose_decode.c apr_jose_decode.c	965:1009 (2%) 1110:1154 (2%)	view
23	x 2	crypto crypto	apr_crypto_commoncrypto.c apr_crypto_commoncrypto.c	895:934 (3%) 1118:1157 (3%)	view
22	x 2	dbd dbd	apr_dbd_oracle.c apr_dbd_oracle.c	1227:1249 (1%) 1614:1636 (1%)	view
21	x 2	ldap ldap	apr_ldap.c apr_ldap.c	3031:3065 (1%) 3183:3217 (1%)	view
21	x 2	crypto crypto	apr_crypto_commoncrypto.c apr_crypto_nss.c	87:123 (2%) 95:136 (2%)	view
21	x 2	crypto crypto	apr_crypto_openssl.c apr_crypto_openssl.c	1050:1078 (2%) 1270:1298 (2%)	view
21	x 2	crypto crypto	apr_crypto_nss.c apr_crypto_openssl.c	95:136 (2%) 176:215 (2%)	view
21	x 2	dbd dbd	apr_dbd_oracle.c apr_dbd_oracle.c	1255:1283 (1%) 1642:1670 (1%)	view
21	x 2	crypto crypto	apr_crypto_commoncrypto.c apr_crypto_openssl.c	87:123 (2%) 176:215 (2%)	view
20	x 2	ldap ldap	apr_ldap.c apr_ldap.c	3372:3405 (1%) 3544:3577 (1%)	view
20	x 2	json json	apr_json_decode.c apr_json_decode.c	601:623 (3%) 629:651 (3%)	view
20	x 2	crypto crypto	apr_crypto_openssl.c apr_crypto_openssl.c	837:856 (2%) 865:884 (2%)	view
20	x 2	ldap ldap	apr_ldap.c apr_ldap.c	3456:3489 (1%) 3544:3577 (1%)	view
20	x 2	crypto crypto	apr_crypto_commoncrypto.c apr_crypto_commoncrypto.c	440:459 (2%) 549:568 (2%)	view
19	x 2	dbd dbd	apr_dbd_mysql.c apr_dbd_oracle.c	118:145 (2%) 223:250 (1%)	view
19	x 2	dbd dbd	apr_dbd_pgsql.c apr_dbd_pgsql.c	150:171 (2%) 842:863 (2%)	view
18	x 2	redis redis	apr_redis.c apr_redis.c	964:988 (2%) 1046:1069 (2%)	view
18	x 2	crypto crypto	apr_crypto_commoncrypto.c apr_crypto_nss.c	1429:1460 (2%) 1606:1637 (2%)	view
18	x 2	crypto crypto	apr_md4.c apr_md5.c	368:395 (9%) 443:470 (6%)	view
18	x 2	dbd dbd	apr_dbd_mysql.c apr_dbd_oracle.c	89:115 (2%) 195:221 (1%)	view
18	x 2	crypto crypto	apr_crypto_nss.c apr_crypto_nss.c	1112:1140 (2%) 1313:1341 (2%)	view
17	x 2	dbm dbm	apr_dbm_gdbm.c apr_dbm_ndbm.c	88:106 (12%) 78:96 (15%)	view
17	x 2	dbm dbm	apr_dbm_gdbm.c apr_dbm_sdbm.c	88:106 (12%) 59:77 (15%)	view
17	x 2	dbm dbm	apr_dbm_ndbm.c apr_dbm_sdbm.c	78:96 (15%) 59:77 (15%)	view
17	x 2	redis redis	apr_redis.c apr_redis.c	713:737 (1%) 829:853 (1%)	view
17	x 2	crypto crypto	apr_crypto_commoncrypto.c apr_crypto_commoncrypto.c	767:796 (2%) 990:1019 (2%)	view
17	x 2	dbm dbm	apr_dbm_berkeleydb.c apr_dbm_gdbm.c	142:160 (9%) 88:106 (12%)	view
17	x 2	dbm dbm	apr_dbm_berkeleydb.c apr_dbm_sdbm.c	142:160 (9%) 59:77 (15%)	view
17	x 2	dbm dbm	apr_dbm_berkeleydb.c apr_dbm_ndbm.c	142:160 (9%) 78:96 (15%)	view
17	x 2	ldap ldap	apr_ldap.c apr_ldap_rebind.c	451:475 (<1%) 252:276 (11%)	view
16	x 2	include include	in apr_ldap.h.in apu.h.in	1:17 (9%) 1:17 (13%)	view
16	x 2	dbd dbd	apr_dbd_mysql.c apr_dbd_oracle.c	1135:1155 (1%) 405:425 (1%)	view
16	x 2	dbd dbd	apr_dbd_oracle.c apr_dbd_oracle.c	1178:1199 (1%) 1565:1586 (1%)	view
15	x 2	dbd dbd	apr_dbd_pgsql.c apr_dbd_pgsql.c	92:109 (1%) 401:420 (1%)	view
15	x 2	include include/private	in apu_want.h.in apu_select_dbm.h.in	1:15 (44%) 1:15 (57%)	view
15	x 2	memcache memcache	apr_memcache.c apr_memcache.c	967:984 (1%) 1036:1053 (1%)	view
15	x 2	json json	apr_json_decode.c apr_json_decode.c	569:584 (2%) 601:616 (2%)	view
15	x 2	json json	apr_json_decode.c apr_json_decode.c	569:584 (2%) 629:644 (2%)	view
15	x 2	dbd dbd	apr_dbd_pgsql.c apr_dbd_pgsql.c	825:843 (1%) 895:913 (1%)	view
15	x 2	include include/private	in apr_ldap.h.in apu_select_dbm.h.in	1:15 (8%) 1:15 (57%)	view

Duplicated Units

The list of top 4 duplicated units.

See data for all 4 unit duplicates...

Size	#	Folders	Files	Lines	Code
21	x 2	ldap ldap	apr_ldap.c apr_ldap_rebind.c	451:476 252:277	view
13	x 3	crypto crypto crypto	apr_crypto_commoncrypto.c apr_crypto_openssl.c apr_crypto_nss.c	1429:1445 1712:1728 1606:1622	view
8	x 2	crypto crypto	apr_md4.c apr_md5.c	386:396 461:471	view
7	x 2	dbd dbd/unsupported	apr_dbd_pgsql.c apr_dbd_freetds.c	1272:1280 678:686	view