policy_utils Namespace Reference

Some generic utility functions used by different policy components. More...

Classes
class	PolicyUtilsErr
	Generic exception for errors. More...
Functions
void	str_to_list (const string &in, list< string > &out)
	Converts a string in the form "1,2,...,n" to a list of strings.
void	str_to_set (const string &in, set< string > &out)
	Converts a string in the form "1,2,...,n" to a set of strings.
void	read_file (const string &fname, string &out)
	Reads a file into a string.
unsigned	count_nl (const char *x)
	Count the occurences of newlines in the c-style string.
bool	regex (const string &str, const string &reg)
	Match a regex.
template<class T >
void	delete_vector (vector< T * > *v)
	Deletes a vector by deleting objects and deleting the vector itself.
template<class T >
void	clear_container (T &l)
	Deletes objects in container.
template<class A , class T >
void	clear_map (map< A, T * > &m)
	Delets objects of a map and clears the map at the end.
template<class T >
void	clear_map_container (T &m)
	Delets objects of a map-like container and clears the map at the end.
template<class T >
string	to_str (T x)
	Converts an object to a string via an ostringstream.

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Detailed Description

Some generic utility functions used by different policy components.

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Function Documentation

template<class T >

void policy_utils::clear_container

(

T &

l

)

Deletes objects in container.

Checks if objects are null and skips them if so.

The container is cleared at the end.

Parameters:

l	container to be deleted and cleared.

template<class A , class T >

void policy_utils::clear_map

(

map< A, T * > &

m

)

Delets objects of a map and clears the map at the end.

Checks for null objects.

Parameters:

m	map to be deleted and cleared.

template<class T >

void policy_utils::clear_map_container

(

T &

m

)

Delets objects of a map-like container and clears the map at the end.

Checks for null objects.

Parameters:

m	map-like container to be deleted and cleared.

unsigned policy_utils::count_nl

(

const char *

x

)

Count the occurences of newlines in the c-style string.

Returns:

the number of new lines in the string.

Parameters:

x	the 0 terminated c-style string to count new lines in.

template<class T >

void policy_utils::delete_vector

(

vector< T * > *

v

)

Deletes a vector by deleting objects and deleting the vector itself.

It checks if objects are null and skips them if so. Also checks if vector itself is null.

Parameters:

v	vector to delete

void policy_utils::read_file	(	const string &	fname,
		string &	out
	)

Reads a file into a string.

An exception is thrown on error.

Parameters:

fname	filename to read.
out	output string which will be filled with file content.

bool policy_utils::regex	(	const string &	str,
		const string &	reg
	)

Match a regex.

Parameters:

str	input string to check.
reg	regular expression used for matching.

Returns:

true if string matches regular expression

void policy_utils::str_to_list	(	const string &	in,
		list< string > &	out
	)

Converts a string in the form "1,2,...,n" to a list of strings.

Parameters:

in	input string.
out	output list.

void policy_utils::str_to_set	(	const string &	in,
		set< string > &	out
	)

Converts a string in the form "1,2,...,n" to a set of strings.

Parameters:

in	input string.
out	output set.

template<class T >

string policy_utils::to_str

(

T

x

)

Converts an object to a string via an ostringstream.

Returns:

string representation of object.

Parameters:

x	object to convert to string.