apache / nuttx-apps - Conditional 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 7,190 units with 174,651 lines of code in units (63.8% of code).

14 very complex units (5,178 lines of code)
78 complex units (13,821 lines of code)
492 medium complex units (43,122 lines of code)
839 simple units (36,983 lines of code)
5,767 very simple units (75,547 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 Token_destroy() in interpreters/bas/bas_token.c	188	179	1
int webclient_perform() in netutils/webclient/webclient.c	787	133	1
static void vi_cmd_mode() in system/vi/vi.c	554	115	1
int main() in canutils/candump/candump.c	460	113	2
int httpd_parse_request() in netutils/thttpd/libhttpd.c	435	106	1
static int gettoken() in interpreters/minibasic/basic.c	225	98	1
static int cmd_false() in nshlib/nsh_command.c	490	72	3
int main() in testing/libc/scanftest/scanftest_main.c	356	62	2
static int tokenlen() in interpreters/minibasic/basic.c	133	62	2
int curl4nx_easy_perform() in netutils/libcurl4nx/curl4nx_easy_perform.c	358	61	1
int cmd_ifconfig() in nshlib/nsh_netcmds.c	440	61	3
int iptables_parse() in system/iptables/iptables_utils.c	209	54	3
static int process() in crypto/controlse/controlse_main.cxx	269	54	2
static int cle_editloop() in system/cle/cle.c	274	53	1
int main() in graphics/nxglyphs/src/mksrle.c	360	50	3
int httpd_got_request() in netutils/thttpd/libhttpd.c	162	48	1
static int dhcp6c_handle_reply() in netutils/dhcp6c/dhcp6c.c	209	48	5
static void vi_insert_mode() in system/vi/vi.c	194	46	1
void i8sak_get_cmd() in wireless/ieee802154/i8sak/i8sak_get.c	287	46	3
static void vi_parsecolon() in system/vi/vi.c	162	45	1
int tiff_initialize() in graphics/tiff/tiff_initialize.c	264	45	1
static pthread_addr_t i8sak_eventthread() in wireless/ieee802154/i8sak/i8sak_events.c	119	44	1
static int ls_handler() in nshlib/nsh_fscmds.c	213	42	4
static int usbmsc_enumerate() in system/usbmsc/usbmsc_main.c	148	41	2
static int composite_enumerate() in system/composite/composite_main.c	148	41	2
int main() in testing/drivers/fftest/fftest.c	315	41	2
int main() in interpreters/quickjs/qjsmini.c	179	41	2
static int nsh_parse_command() in nshlib/nsh_parse.c	298	41	2
static int zmr_parsefilename() in system/zmodem/zm_receive.c	205	40	2
int main() in system/dd/dd_main.c	187	40	2
int httpd_start_request() in netutils/thttpd/libhttpd.c	247	40	2
static double factor() in interpreters/minibasic/basic.c	246	40	1
int main() in canutils/slcan/slcan.c	273	39	2
static bool parse_args() in benchmarks/cyclictest/cyclictest.c	173	38	2
void i8sak_set_cmd() in wireless/ieee802154/i8sak/i8sak_set.c	234	38	3
int main() in benchmarks/cyclictest/cyclictest.c	209	37	2
int ft80x_audio_playfile() in graphics/ft80x/ft80x_audio.c	230	37	6
void CHexCalculator::handleActionEvent() in graphics/nxwm/src/chexcalculator.cxx	166	37	1
static inline int cgi_interpose_output() in netutils/thttpd/thttpd_cgi.c	185	36	1
int main() in testing/drivers/crypto/hash.c	265	36	1
void CText::wrap() in graphics/nxwidgets/src/ctext.cxx	134	36	1
int waddch() in graphics/pdcurs34/pdcurses/pdc_addch.c	142	36	2
int wgetnstr() in graphics/pdcurs34/pdcurses/pdc_getstr.c	158	36	3
int wgetch() in graphics/pdcurs34/pdcurses/pdc_getch.c	122	36	1
static int ftpd_stream() in netutils/ftpd/ftpd.c	236	35	2
static int tcurses_vt100_getkeycode() in system/termcurses/tcurses_vt100.c	185	34	3
void aio_test() in testing/ostest/aio.c	294	34	1
int settings_create() in system/settings/settings.c	148	33	3
int wgetn_wstr() in graphics/pdcurs34/pdcurses/pdc_getstr.c	145	33	3
int cmd_addroute() in nshlib/nsh_routecmds.c	269	33	3