Regex management

Functions
int	preg_match (const char *expr, char *str, char ***matches, int *nmatches)
	Check if a string matches a regular expression.
char *	str_replace (char *str, char *orig, char *rep)
	Replace the content of 'orig' in 'str' with 'rep'.
char *	str_replace_all (char *str, char *orig, char *rep)
	Replace all of the occurrences of 'orig' in 'str' with 'rep'.

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Function Documentation

int preg_match	(	const char *	expr,
		char *	str,
		char ***	matches,
		int *	nmatches
	)

Check if a string matches a regular expression.

Parameters:

	expr	Regular expression to be matched
	str	String to be checked
	matches	Reference to a char** that will contain the submatches (NULL if you don't need it)
	nmatches	Reference to a int containing the number of submatches found (NULL if you don't need it)

Returns:

-1 if the regex is wrong, 0 if no match was found, 1 otherwise

char* str_replace	(	char *	str,
		char *	orig,
		char *	rep
	)

Replace the content of 'orig' in 'str' with 'rep'.

Parameters:

	str	String to work on
	orig	String to be replaced
	rep	Replacement for 'orig'

Returns:

The string with the replacement

char* str_replace_all	(	char *	str,
		char *	orig,
		char *	rep
	)

Replace all of the occurrences of 'orig' in 'str' with 'rep'.

Parameters:

	str	String to work on
	orig	String to be replaced
	rep	Replacement for 'orig'

Returns:

The string with the replacement