search using regex functions More...

#include "nomos_regex.h"
#include "nomos_gap.h"
#include "nomos_utils.h"

Include dependency graph for nomos_regex.c:

Macros
#define	CALL_IF_DEBUG_MODE(x)

#define	_XC(q) ((char) xascii[q])

Functions
void	regexError (int ret, regex_t regc, char regex)
	Log an error caused by regex. More...

int	endsIn (char s, char suffix)
	Check if a string ends with given suffix. More...

int	lineInFile (char pathname, char regex)
	Check if a line exists in a file. More...

int	textInFile (char pathname, char regex, int flags)
	Check if a regex passes in a file. More...

int	strGrep (char regex, char data, int flags)
	General-purpose grep function, used for one-time-only searches. More...

int	idxGrep (int index, char *data, int flags)
	compile a regex, and perform the search (on data?) More...

int	idxGrep_recordPosition (int index, char *data, int flags)
	compile a regex, perform the search and record findings More...

int	idxGrep_recordPositionDoctored (int index, char *data, int flags)
	compile a regex, perform the search and record findings More...

int	idxGrep_recordIndex (int index, char *data, int flags)
	compile a regex, perform the search and record index More...

int	matchOnce (int isPlain, char data, char regex, regex_t rp, regmatch_t regmatch)
	Perform a regex match on a given data and return only first match. More...

int	storeOneMatch (regmatch_t currentRegMatch, int lastmatch, GArray allmatches, char tmpData, char data)
	Store a single regex match to array. More...

int	idxGrep_base (int index, char *data, int flags, int mode)
	compile a regex, and perform the search (on data?) More...

void	recordIndex (GArray *indexList, int index)
	Add a given index to index list. More...

static int	getOffset (int posInDoctoredBuffer)
	Get offset from doctored buffer. More...

regmatch_t *	getRegmatch_t (GArray *in, int index)
	From a given array, get regex match from a given index. More...

void	rememberWhatWeFound (GArray highlight, GArray regmatch_tArray, int index, int mode)
	Store regex matches in highlight array. More...

int	strNbuf (char data, char str)
	Check if a string exists in buffer (case insensitive) More...

int	strNbuf_noGlobals (char data, char str, regmatch_t matchPos, int doSave, char saveData)
	This is our own internal, case-insensitive version of strstr(). More...

Variables
static char	regexErrbuf [myBUFSIZ]

regex_t	idx_regc [NFOOTPRINTS]

regex_t	regc [NFOOTPRINTS]

Detailed Description

search using regex functions

Functions for dealing with the regex clib functions. Performs the regex searchs on the data.

Definition in file nomos_regex.c.

Function Documentation

◆ endsIn()

int endsIn	(	char *	s,
		char *	suffix
	)

Check if a string ends with given suffix.

Parameters

s	String to check
suffix	Suffix to find

Returns: 1 if suffix found, 0 otherwise

Definition at line 56 of file nomos_regex.c.

◆ getOffset()

static int getOffset ( int posInDoctoredBuffer )

static

Get offset from doctored buffer.

Parameters

posInDoctoredBuffer

Returns: new offset

See also: uncollapsePosition()

Definition at line 462 of file nomos_regex.c.

◆ getRegmatch_t()

regmatch_t* getRegmatch_t	(	GArray *	in,
		int	index
	)

From a given array, get regex match from a given index.

Parameters

in	Array to get regex match from
index	The index in array required

Returns: Regex match @index

Definition at line 473 of file nomos_regex.c.

◆ idxGrep()

int idxGrep	(	int	index,
		char *	data,
		int	flags
	)

compile a regex, and perform the search (on data?)

Parameters

index	number of licence/regex we are looking for (given in STRINGS.in)
data	the data to search
flags	regcomp cflags

Returns: -1 on regex-compile failure, 1 if regex search fails, and 0 if regex search is successful.

Definition at line 205 of file nomos_regex.c.

◆ idxGrep_base()

int idxGrep_base	(	int	index,
		char *	data,
		int	flags,
		int	mode
	)

compile a regex, and perform the search (on data?)

Parameters

index	number of licence/regex we are looking for (given in STRINGS.in)
data	the data to search
flags	regcomp cflags
mode	Flag to control recording of findings (0:No, 1: Yes, 2:Yes doctored buffer)

Returns: -1 on regex-compile failure, 1 if regex search fails, and 0 if regex search is successful.

Todo:: is idx_regc needed? Here we set the pointer to our array and later we fill it, but we never reuse the regex_t

Now we have a match

All sanity checks have passed and we have at least one match

Definition at line 324 of file nomos_regex.c.

◆ idxGrep_recordIndex()

int idxGrep_recordIndex	(	int	index,
		char *	data,
		int	flags
	)

compile a regex, perform the search and record index

If OPTS_NO_HIGHLIGHTINFO is set, do not record. If not set, record the finding index

Parameters

index	number of licence/regex we are looking for (given in STRINGS.in)
data	the data to search
flags	regcomp cflags

Returns: -1 on regex-compile failure, 1 if regex search fails, and 0 if regex search is successful.

Definition at line 263 of file nomos_regex.c.

◆ idxGrep_recordPosition()

int idxGrep_recordPosition	(	int	index,
		char *	data,
		int	flags
	)

compile a regex, perform the search and record findings

If OPTS_NO_HIGHLIGHTINFO is set, do not record. If not set, record the findings

Parameters

index	number of licence/regex we are looking for (given in STRINGS.in)
data	the data to search
flags	regcomp cflags

Returns: -1 on regex-compile failure, 1 if regex search fails, and 0 if regex search is successful.

Definition at line 220 of file nomos_regex.c.

◆ idxGrep_recordPositionDoctored()

int idxGrep_recordPositionDoctored	(	int	index,
		char *	data,
		int	flags
	)

compile a regex, perform the search and record findings

If OPTS_NO_HIGHLIGHTINFO is set, do not record. If not set, record the doctored findings

Parameters

index	number of licence/regex we are looking for (given in STRINGS.in)
data	the data to search
flags	regcomp cflags

Returns: -1 on regex-compile failure, 1 if regex search fails, and 0 if regex search is successful.

Definition at line 241 of file nomos_regex.c.

◆ lineInFile()

int lineInFile	(	char *	pathname,
		char *	regex
	)

Check if a line exists in a file.

Parameters

pathname	File location
regex	Regex to check

Returns: True if regex satisfied, false otherwise

Definition at line 81 of file nomos_regex.c.

◆ matchOnce()

int matchOnce	(	int	isPlain,
		char *	data,
		char *	regex,
		regex_t *	rp,
		regmatch_t *	regmatch
	)

Perform a regex match on a given data and return only first match.

Parameters

	isPlain	Do a plain match?
	data	The string to perform search on
	regex	The regex string
	rp	Regex buffer
[out]	regmatch	Regex matches

Returns

Definition at line 282 of file nomos_regex.c.

◆ recordIndex()

void recordIndex	(	GArray *	indexList,
		int	index
	)

Add a given index to index list.

Parameters

[in,out]	indexList	List to add index to
[in]	index	Index to be appended

Definition at line 452 of file nomos_regex.c.

◆ regexError()

void regexError	(	int	ret,
		regex_t *	regc,
		char *	regex
	)

Log an error caused by regex.

Calls regerror()

Parameters

ret	Error code
regc	Compiled regex
regex	Regex string

Definition at line 38 of file nomos_regex.c.

◆ rememberWhatWeFound()

void rememberWhatWeFound	(	GArray *	highlight,
		GArray *	regmatch_tArray,
		int	index,
		int	mode
	)

Store regex matches in highlight array.

Parameters

[in,out]	highlight	The array holding the regex matches
[in]	regmatch_tArray	Array of regex matches to store
[in]	index	Index of license (from STRINGS.in)
[in]	mode	Mode to store (1=>get the byte position\|2=>get the offset)

Definition at line 485 of file nomos_regex.c.

◆ storeOneMatch()

int storeOneMatch	(	regmatch_t	currentRegMatch,
		int	lastmatch,
		GArray *	allmatches,
		char **	tmpData,
		char *	data
	)

Store a single regex match to array.

Parameters

[in]	currentRegMatch	Match to store
[in]	lastmatch	Index of last match
[in,out]	allmatches	Array of all matches
[in,out]	tmpData
[in]	data

Returns: New lastmatch index

Definition at line 301 of file nomos_regex.c.

◆ strGrep()

int strGrep	(	char *	regex,
		char *	data,
		int	flags
	)

General-purpose grep function, used for one-time-only searches.

Returns: -1 on regex-compile failure, 1 if regex search fails, and 0 if regex search is successful.

Definition at line 139 of file nomos_regex.c.

◆ strNbuf()

int strNbuf	(	char *	data,
		char *	str
	)

Check if a string exists in buffer (case insensitive)

Parameters

data	Haystack
str	Needle

Returns: 1 on success, 0 otherwise

See also: strNbuf_noGlobals()

Definition at line 528 of file nomos_regex.c.

◆ strNbuf_noGlobals()

int strNbuf_noGlobals	(	char *	data,
		char *	str,
		regmatch_t *	matchPos,
		int	doSave,
		char *	saveData
	)

This is our own internal, case-insensitive version of strstr().

No open-source code was consulted/used in the construction of this function.

Definition at line 538 of file nomos_regex.c.

◆ textInFile()

int textInFile	(	char *	pathname,
		char *	regex,
		int	flags
	)

Check if a regex passes in a file.

Parameters

pathname	File location
regex	Regex to check
flags	Additional regex flags

Returns: True if regex satisfied, false otherwise

Definition at line 100 of file nomos_regex.c.

Variable Documentation

◆ regexErrbuf

char regexErrbuf[myBUFSIZ]

static

Buffer to hold regex error

Definition at line 25 of file nomos_regex.c.

Macros

Functions

Variables

Detailed Description

Function Documentation

◆ endsIn()

◆ getOffset()

◆ getRegmatch_t()

◆ idxGrep()

◆ idxGrep_base()

◆ idxGrep_recordIndex()

◆ idxGrep_recordPosition()

◆ idxGrep_recordPositionDoctored()

◆ lineInFile()

◆ matchOnce()

◆ recordIndex()

◆ regexError()

◆ rememberWhatWeFound()

◆ storeOneMatch()

◆ strGrep()

◆ strNbuf()

◆ strNbuf_noGlobals()

◆ textInFile()

Variable Documentation

◆ regexErrbuf