mozilla / libdmg-hfsplus - 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 272 units with 6,294 lines of code in units (61.5% of code).

0 very complex units (0 lines of code)
2 complex units (187 lines of code)
17 medium complex units (1,380 lines of code)
37 simple units (1,900 lines of code)
216 very simple units (2,827 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
int main() in hfs/hfs.c	70	27	2
static uint32_t traverseNode() in hfs/btree.c	117	26	9
int attrFile() in hfs/catalog.c	83	25	3
void addAllInFolder() in hfs/hfslib.c	104	25	3
int main() in hdutil/hdutil.c	68	22	2
int allocate() in hfs/rawfile.c	106	22	2
static uint32_t removeRecord() in hfs/btree.c	130	22	5
int main() in dmg/dmg.c	90	21	2
void hfs_untar() in hfs/hfslib.c	67	17	2
static uint32_t linearCheck() in hfs/btree.c	84	17	4
static int addRecord() in hfs/btree.c	102	16	6
static void closeHFSPlusCompressed() in hfs/hfscompress.c	88	15	1
size_t adc_decompress() in dmg/adc.c	69	14	5
int move() in hfs/catalog.c	98	14	3
void extractBLKX() in dmg/io.c	76	13	3
int32_t FastUnicodeCompare() in hfs/fastunicodecompare.c	38	13	4
static void readResourceData() in dmg/resources.c	55	11	6
static void readNSizResource() in dmg/resources.c	47	11	2
static void extractOne() in hfs/hfslib.c	75	11	5
static int catalogCompare() in hfs/catalog.c	40	10	2
int removeFile() in hfs/catalog.c	78	10	2
void writeToFile() in hfs/hfslib.c	49	10	3
void writeToHFSFile() in hfs/hfslib.c	48	10	3
static int compressedRead() in hfs/hfscompress.c	38	10	4
static int extentCompare() in hfs/extents.c	32	9	2
int readExtents() in hfs/rawfile.c	57	9	1
static void cacheRun() in dmg/dmgfile.c	41	8	3
int buildDmg() in dmg/dmglib.c	150	8	6
int convertToDMG() in dmg/dmglib.c	165	8	4
static int attrCompare() in hfs/xattr.c	32	8	2
static int rawFileRead() in hfs/rawfile.c	44	8	4
static int rawFileWrite() in hfs/rawfile.c	45	8	4
int removeExtents() in hfs/rawfile.c	49	8	1
void removeAllInFolder() in hfs/hfslib.c	44	8	3
int debugBTree() in hfs/btree.c	53	8	2
static uint32_t removeNode() in hfs/btree.c	52	8	2
void cmd_setattr() in hfs/hfs.c	39	8	3
static void cacheOffset() in dmg/dmgfile.c	16	7	2
static int dmgFileRead() in dmg/dmgfile.c	26	7	4
int decompressRun() in dmg/compress.c	32	7	5
void flipPartitionMultiple() in dmg/partition.c	41	7	4
int writeExtents() in hfs/rawfile.c	41	7	1
static uint32_t findFree() in hfs/btree.c	39	7	1
static int doAddRecord() in hfs/btree.c	55	7	5
static void writeResourceData() in dmg/resources.c	39	6	6
int compressionBlockTypeSupported() in dmg/compress.c	16	6	1
size_t fvWrite() in dmg/filevault.c	33	6	3
int updateAttribution() in dmg/attribution.c	90	6	5
int extractDmg() in dmg/dmglib.c	31	6	3
void flipCatalogThread() in hfs/catalog.c	26	6	2