aws / SigV4-for-AWS-IoT-embedded-sdk - 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 54 units with 2,163 lines of code in units (84.0% of code).

0 very complex units (0 lines of code)
1 complex units (92 lines of code)
7 medium complex units (422 lines of code)
16 simple units (770 lines of code)
30 very simple units (879 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
static SigV4Status_t verifyParamsToGenerateAuthHeaderApi() in source/sigv4.c	92	29	5
static SigV4Status_t parseHeaderKeyValueEntries() in source/sigv4.c	71	14	5
static SigV4Status_t generateSigningKey() in source/sigv4.c	80	14	4
static SigV4Status_t scanValue() in source/sigv4.c	59	12	5
static bool isAllowedChar() in source/sigv4.c	30	12	2
static SigV4Status_t generateCanonicalRequestUntilHeaders() in source/sigv4.c	79	12	4
static int32_t cmpQueryFieldValue() in source/sigv4.c	36	11	2
SigV4Status_t SigV4_EncodeURI() in source/sigv4.c	67	11	6
static SigV4Status_t validateDateTime() in source/sigv4.c	56	10	1
static SigV4Status_t copyHeaderStringToCanonicalBuffer() in source/sigv4.c	55	10	5
SigV4Status_t SigV4_AwsIotDateToIso8601() in source/sigv4.c	60	10	4
SigV4Status_t SigV4_GenerateHTTPAuthorization() in source/sigv4.c	84	10	5
static void quickSortHelper() in source/sigv4_quicksort.c	44	9	5
static int32_t hmacAddKey() in source/sigv4.c	52	8	4
static void addToDate() in source/sigv4.c	30	7	3
static SigV4Status_t generateCanonicalAndSignedHeaders() in source/sigv4.c	56	7	6
static SigV4Status_t parseQueryString() in source/sigv4.c	39	7	4
static SigV4Status_t writeCanonicalQueryParameters() in source/sigv4.c	59	7	3
static SigV4Status_t checkLeap() in source/sigv4.c	20	6	1
static SigV4Status_t parseDate() in source/sigv4.c	55	6	5
static SigV4Status_t generateCanonicalURI() in source/sigv4.c	53	6	4
static bool isTrimmableSpace() in source/sigv4.c	27	6	4
static SigV4Status_t generateCanonicalQuery() in source/sigv4.c	33	6	4
static int32_t hmacFinal() in source/sigv4.c	47	6	3
static void processAmpersandInQueryString() in source/sigv4.c	41	5	6
static SigV4Status_t writeValueInCanonicalizedQueryString() in source/sigv4.c	38	5	6
static SigV4Status_t writeStringToSign() in source/sigv4.c	55	5	4
static int32_t cmpHeaderField() in source/sigv4.c	23	4	2
static SigV4Status_t appendSignedHeaders() in source/sigv4.c	33	4	5
static SigV4Status_t appendCanonicalizedHeaders() in source/sigv4.c	29	4	3
static SigV4Status_t completeHashAndHexEncode() in source/sigv4.c	40	4	5
static int32_t hmacIntermediate() in source/sigv4.c	35	4	3
static size_t partition() in source/sigv4_quicksort.c	23	3	5
static SigV4Status_t lowercaseHexEncode() in source/sigv4.c	33	3	2
static char lowercaseCharacter() in source/sigv4.c	14	3	1
static void storeHashedPayloadLocation() in source/sigv4.c	15	3	4
static int32_t completeHash() in source/sigv4.c	26	3	5
static int32_t completeHmac() in source/sigv4.c	30	3	7
static SigV4Status_t writePayloadHashToCanonicalRequest() in source/sigv4.c	30	3	2
static void swap() in source/sigv4_quicksort.c	31	2	3
static SigV4Status_t generateCanonicalURI() in source/sigv4.c	159	2	4
static void setQueryParameterKey() in source/sigv4.c	11	2	4
static void setQueryParameterValue() in source/sigv4.c	9	2	4
static void assignDefaultArguments() in source/sigv4.c	15	2	3
static SigV4Status_t writeLineToCanonicalRequest() in source/sigv4.c	23	2	3
static SigV4Status_t generateAuthorizationValuePrefix() in source/sigv4.c	60	2	7
void quickSort() in source/sigv4_quicksort.c	11	1	4
static size_t sizeNeededForCredentialScope() in source/sigv4.c	8	1	1
static size_t copyString() in source/sigv4.c	7	1	3
static void generateCredentialScope() in source/sigv4.c	31	1	2