Functions
char *	icalparameter_as_ical_string (icalparameter *parameter)
	Converts icalparameter into a string representation.

char *	icalparameter_as_ical_string_r (icalparameter *parameter)
	Converts icalparameter into an string representation according to RFC5445/RFC6868.

void	icalparameter_free (icalparameter *parameter)
	Frees an icalparameter object.

const char *	icalparameter_get_iana_name (icalparameter *param)
	Returns the IANA name of param.

const char *	icalparameter_get_iana_value (icalparameter *param)
	Returns the IANA value of param.

const char *	icalparameter_get_xname (icalparameter *param)
	Returns the X-name of param.

const char *	icalparameter_get_xvalue (icalparameter *param)
	Returns the X-value of param.

int	icalparameter_has_same_name (icalparameter param1, icalparameter param2)
	Determines if two parameters have the same name.

icalparameter_kind	icalparameter_isa (icalparameter *parameter)

int	icalparameter_isa_parameter (void *param)

int	icalparameter_kind_is_valid (const icalparameter_kind kind)
	Checks the validity of a icalparameter_kind.

const char *	icalparameter_kind_to_string (icalparameter_kind kind)
	Returns a string representing the given icalparameter_kind.

icalparameter *	icalparameter_new (icalparameter_kind kind)
	Creates new icalparameter object.

icalparameter *	icalparameter_new_clone (icalparameter *p)
	Creates new icalparameter as a clone of the given one.

icalparameter *	icalparameter_new_from_string (const char *value)
	Creates new icalparameter object from string.

icalparameter *	icalparameter_new_from_value_string (icalparameter_kind kind, const char *value)
	Creates new icalparameter of a given kind with a given value.

void	icalparameter_set_iana_name (icalparameter param, const char v)
	Sets the IANA name of param to v.

void	icalparameter_set_iana_value (icalparameter param, const char v)
	Sets the IANA value of param to v.

void	icalparameter_set_xname (icalparameter param, const char v)
	Sets the X-name of param to v.

void	icalparameter_set_xvalue (icalparameter param, const char v)
	Sets the X-value of param to v.

icalparameter_kind	icalparameter_string_to_kind (const char *string)
	Returns the icalparameter_kind for a given string.

Detailed Description

Functions to work with ical parameter objects, which represent parameters to property objects.

Function Documentation

◆ icalparameter_as_ical_string()

char * icalparameter_as_ical_string ( icalparameter * parameter )

Converts icalparameter into a string representation.

Parameters

parameter The icalparameter to convert

Returns: A string representing the parameter according to RFC5445/RFC6868.

See also: icalparameter_as_ical_string_r()

Error handling: If there is any error, the method returns NULL. Furthermore, if parameter is NULL, it also sets icalerrno to ICAL_BADARG_ERROR. If it doesn't recognize the kind of the parameter, it sets icalerrno it ICAL_BADARG_ERROR. If the parameter is otherwise malformed, it sets icalerrno to ICAL_MALFORMEDDATA_ERROR.

Ownership: Strings returned by this method are owned by libical, they must not be freed and they may be reclaimed with the next call into the library. A version of this function, which returns strings that are not owned by libical, is icalparameter_as_ical_string_r().

Usage: icalparameter *param = icalparameter_new_from_string("ROLE=CHAIR");

if(param) {

printf("%s\n", icalparameter_as_ical_string(param));

}

icalparameter_free(param);

◆ icalparameter_as_ical_string_r()

char * icalparameter_as_ical_string_r ( icalparameter * parameter )

Converts icalparameter into an string representation according to RFC5445/RFC6868.

Parameters

parameter The icalparameter to convert

Returns: A string representing the parameter

See also: icalparameter_as_ical_string()

Error handling: If there is any error, the method returns NULL. Furthermore, if parameter is NULL, it also sets icalerrno to ICAL_BADARG_ERROR. If it doesn't recognize the kind of the parameter, it sets icalerrno to ICAL_BADARG_ERROR. If the parameter is otherwise malformed, it sets icalerrno to ICAL_MALFORMEDDATA_ERROR.

Ownership: Strings returned by this method are owned by the caller, thus they need to be manually free()d after use. A version of this function which returns strings that do not need to be freed manually is icalparameter_as_ical_string().

Usage: icalparameter *param = icalparameter_new_from_string("ROLE=CHAIR");

if(param) {

char *str = icalparameter_as_ical_string(param);

printf("%s\n", str);

free(str);

}

icalparameter_free(param);

◆ icalparameter_free()

void icalparameter_free ( icalparameter * parameter )

Frees an icalparameter object.

Parameters

parameter The icalparameter to free

This method needs to be used on all parameter objects returned from any of the _new() methods including icalparameter_new(), icalparameter_new_clone(), icalparameter_new_from_string() and icalparameter_new_from_value_string(), when they are not needed anymore and to be released.

Usage: icalparameter *param = icalparameter_new();

if(param) {

// use param...

}

// after use, release it

icalparameter_free(param);

◆ icalparameter_get_iana_name()

const char * icalparameter_get_iana_name ( icalparameter * param )

Returns the IANA name of param.

Parameters

param The icalparameter whose IANA name is to be returned

Returns: A string representing the IANA name of param

See also: icalparameter_set_iana_name()

Error handling: Returns NULL and sets icalerrno to ICAL_BADARG_ERROR when a NULL is passed instead of an icalparameter.

Ownership: The string that is returned stays owned by libical and must not be freed by the caller.

Usage: // creates new parameter

icalparameter *param = icalparameter_new();

// sets iana name

icalparameter_set_iana_name(param, "X-TEST");

// compare iana name

assert(0 == strcmp(icalparameter_get_iana_name(param), "X-TEST"));

icalparameter_free(param);

◆ icalparameter_get_iana_value()

const char * icalparameter_get_iana_value ( icalparameter * param )

Returns the IANA value of param.

Parameters

param The icalparameter whose value is to be returned

Returns: A string representing the value of param

See also: icalparameter_set_iana_value()

Error handling: Returns NULL and sets icalerrno to ICAL_BADARG_ERROR when a NULL is passed instead of an icalparameter.

Ownership: The string that is returned stays owned by libical and must not be freed by the caller.

Usage: // create new parameter

icalparameter *param = icalparameter_new_from_string("ROLE=ATTENDEE");

// set role to chair

icalparameter_set_iana_value(param, "CHAIR");

// check that it worked

assert(0 == strcmp(icalparameter_get_iana_value(param), "SUCCESS"));

// release memory

icalparameter_free(param);

◆ icalparameter_get_xname()

const char * icalparameter_get_xname ( icalparameter * param )

Returns the X-name of param.

Parameters

param The icalparameter whose X-name is to be returned

Returns: A string representing the X-name of param

See also: icalparameter_set_xname()

Error handling: Returns NULL and sets icalerrno to ICAL_BADARG_ERROR when a NULL is passed instead of an icalparameter.

Ownership: The string that is returned stays owned by libical and must not be freed by the caller.

Usage: // creates new parameter

icalparameter *param = icalparameter_new();

// sets xname

icalparameter_set_xname(param, "X-TEST");

// compare xname

assert(0 == strcmp(icalparameter_get_xname(param), "X-TEST"));

icalparameter_free(param);

◆ icalparameter_get_xvalue()

const char * icalparameter_get_xvalue ( icalparameter * param )

Returns the X-value of param.

Parameters

param The icalparameter whose X-value is to be returned

Returns: A string representing the X-value of param

See also: icalparameter_set_xvalue()

Error handling: Returns NULL and sets icalerrno to ICAL_BADARG_ERROR when a NULL is passed instead of an icalparameter.

Ownership: The string that is returned stays owned by libical and must not be freed by the caller.

Usage: // create new parameter

icalparameter *param = icalparameter_new_from_string("X-TEST=FAIL");

// set test to success

icalparameter_set_xvalue(param, "SUCCESS");

// check that it worked

assert(0 == strcmp(icalparameter_get_xvalue(param), "SUCCESS"));

// release memory

icalparameter_free(param);

◆ icalparameter_has_same_name()

int icalparameter_has_same_name	(	icalparameter *	param1,
		icalparameter *	param2 )

Determines if two parameters have the same name.

Parameters

param1	First parameter to compare
param2	Second parameter to compare

Returns: 1 if they have the same name, 0 otherwise.

Error handling: If either of param1 or param2 are NULL, it returns 0 and sets icalerrno to ICAL_BADARG_ERROR.

Ownership: Does not take ownership of either icalparameter.

Example: // create two parameters

icalparameter *param1 = icalparameter_new_from_string("ROLE=CHAIR");

icalparameter *param2 = icalparameter_new_from_string("EMAIL=mailto@example.com");

// compare parameter names for equality

assert(icalparameter_has_same_name(param1, param2) == 0);

// release memory

icalparameter_free(param1);

icalparameter_free(param2);

◆ icalparameter_isa()

icalparameter_kind icalparameter_isa ( icalparameter * parameter )

Returns the icalparameter_kind of parameter.

Parameters

parameter The icalparameter whose kind to determine

Returns: The icalparameter_kind of the parameter

Error handling Returns ICAL_NO_PARAMETER when passed NULL.

Usage

// create parameter
icalparameter *param = icalparameter_new_from_string("ROLE=CHAIR");
 
// check what type of parameter this is
assert(icalparameter_isa(param) == ICAL_ROLE_PARAMETER);
 
// release memory
icalparameter_free(param);

◆ icalparameter_isa_parameter()

int icalparameter_isa_parameter ( void * param )

Determines if the given param is an icalparameter

Parameters

param The libical-originated object to check

Returns: 1 if the object is an icalparameter, 0 otherwise.

Note: This function expects to be given an object originating from libical - if this function is passed anything that is not from libical, its behavior is undefined.

Error handling When given a NULL object, it returns 0.

Usage

// create parameter
icalparameter *param = icalparameter_new_from_string("ROLE=CHAIR");
 
// check if it's a parameter
assert(icalparameter_isa_parameter(param));
 
// release memory
icalparameter_free(param);

◆ icalparameter_kind_is_valid()

int icalparameter_kind_is_valid ( const icalparameter_kind kind )

Checks the validity of a icalparameter_kind.

Parameters

kind	The icalparameter_kind

Returns: 1 if kind is valid, 0 otherwise

Usage: assert(icalparameter_kind_is_valid(ICAL_ROLE_PARAMETER));

icalparameter_kind_is_valid
int icalparameter_kind_is_valid(const icalparameter_kind kind)
Checks the validity of a icalparameter_kind.

Since: 3.0.4

◆ icalparameter_kind_to_string()

const char * icalparameter_kind_to_string ( icalparameter_kind kind )

Returns a string representing the given icalparameter_kind.

Parameters

kind	The icalparameter_kind

Returns: A string representing kind

Error handling: When passed a non-existing icalparameter_kind, it returns NULL.

Ownership: The string that is returned by this function is owned by libical and must not be freed by the caller.

Usage: assert(0 == strcmp(icalparameter_kind_to_string(ICAL_ROLE_PARAMETER), "ROLE"));

assert(0 == strcmp(icalparameter_kind_to_string(ICAL_EMAIL_PARAMETER), "EMAIL));

assert(0 == strcmp(icalparameter_kind_to_string(ICAL_ID_PARAMETER), "ID"));

icalparameter_kind_to_string
const char * icalparameter_kind_to_string(icalparameter_kind kind)
Returns a string representing the given icalparameter_kind.

◆ icalparameter_new()

icalparameter * icalparameter_new ( icalparameter_kind kind )

Creates new icalparameter object.

Parameters

kind	The kind of icalparameter to create.

Returns: An icalparameter with the given kind.

Error handling: If there was an internal error regarding memory allocation, it returns NULL and sets icalerrno to ICAL_NEWFAILED_ERROR.

Ownership: Objects created by this method are owned by the caller and must be released with the icalparameter_free() method.

Usage: // create new parameter

icalparameter *parameter = icalparameter_new();

if(parameter) {

// use parameter ...

}

// release parameter

icalparameter_free(parameter);

◆ icalparameter_new_clone()

icalparameter * icalparameter_new_clone ( icalparameter * p )

Creates new icalparameter as a clone of the given one.

Parameters

p	The existing, non-`NULL` parameter to clone.

Returns: An icalparameter that is a clone of the given one.

Error handling: If p is NULL, it returns NULL and sets icalerrno to ICAL_BADARG_ERROR. If there was an internal error cloning the data, it returns NULL without reporting any error in icalerrno.

Ownership: Objects created by this method are owned by the caller and must be released with the icalparameter_free() method.

Usage: // create an icalparameter

icalparameter *param = icalparameter_new_from_string("ROLE=CHAIR");

// clone the parameter

icalparameter *clone = icalparameter_new_clone(param);

if(clone) {

// use clone ...

}

// release parameters

icalparameter_free(param);

icalparameter_free(clone);

◆ icalparameter_new_from_string()

icalparameter * icalparameter_new_from_string ( const char * value )

Creates new icalparameter object from string.

Parameters

value The string from which to create the icalparameter, in the form "PARAMNAME=VALUE"

Returns: An icalparameter that corresponds to the given string.

Error handling: If there was an internal error copying data, it returns NULL and sets icalerrno to ICAL_NEWFAILED_ERROR. If value was NULL, it returns NULL and sets icalerrno to ICAL_BADARG_ERROR. If value was malformed, it returns NULL and sets icalerrno to ICAL_MALFORMEDDATA_ERROR.

Ownership: Objects created by this method are owned by the caller and must be released with the icalparameter_free() method.

Usage: icalparameter *param = icalparameter_new_from_string("ROLE=CHAIR");

if(param) {

// use param ...

}

icalparameter_free(param);

◆ icalparameter_new_from_value_string()

icalparameter * icalparameter_new_from_value_string	(	icalparameter_kind	kind,
		const char *	value )

Creates new icalparameter of a given kind with a given value.

Parameters

kind	The kind of icalparameter to create
value	The value of the parameter

Returns: An icalparameter with the given kind and value.

Error handling: If value is NULL, it returns NULL and sets icalerrno to ICAL_BADARG_ERROR.

Ownership: Objects created by this method are owned by the caller and must be released with the icalparameter_free() method.

Example: // create new parameter

icalparameter *param;

param = icalparameter_new_from_value_string(ICAL_ROLE_PARAMETER, "CHAIR");

// check parameter

assert(0 == strcmp(icalparameter_get_iana_name(param), "ROLE"));

assert(0 == strcmp(icalparameter_get_iana_value(param), "CHAIR"));

// release memory

icalparameter_free(param);

icalparameter_new_from_value_string
icalparameter * icalparameter_new_from_value_string(icalparameter_kind kind, const char *value)
Creates new icalparameter of a given kind with a given value.

◆ icalparameter_set_iana_name()

void icalparameter_set_iana_name	(	icalparameter *	param,
		const char *	v )

Sets the IANA name of param to v.

Parameters

param	The icalparameter to change
v	The IANA name to set param to

See also: icalparameter_get_iana_name()

Error handling: If either param or v are NULL, it sets :calerrno to ICAL_BARARG_ERROR. If there is an error acquiring memory, it sets errno to ENOMEM.

Ownership: The passed string v stays in the ownership of the caller - libical creates a copy of it.

Usage: // creates new parameter

icalparameter *param = icalparameter_new();

// sets iana name

icalparameter_set_iana_name(param, "ROLE");

// compare iana name

assert(0 == strcmp(icalparameter_get_iana_name(param), "X-TEST"));

icalparameter_free(param);

◆ icalparameter_set_iana_value()

void icalparameter_set_iana_value	(	icalparameter *	param,
		const char *	v )

Sets the IANA value of param to v.

Parameters

param	The icalparameter to change
v	The IANA value to set param to

See also: icalparameter_get_iana_value()

Error handling: If either param or v are NULL, it sets icalerrno to ICAL_BARARG_ERROR. If there is an error acquiring memory, it sets errno to ENOMEM.

Ownership: The passed string v stays in the ownership of the caller - libical creates a copy of it.

Usage: // create new parameter

icalparameter *param = icalparameter_new_from_string("ROLE=ATTENDEE");

// set role to chair

icalparameter_set_iana_value(param, "CHAIR");

// check that it worked

assert(0 == strcmp(icalparameter_get_iana_value(param), "SUCCESS"));

// release memory

icalparameter_free(param);

◆ icalparameter_set_xname()

void icalparameter_set_xname	(	icalparameter *	param,
		const char *	v )

Sets the X-name of param to v.

Parameters

param	The icalparameter to change
v	The X-name to set param to

See also: icalparameter_get_xname()

Error handling: If either param or v are NULL, it sets icalerrno to ICAL_BARARG_ERROR. If there is an error acquiring memory, it sets errno to ENOMEM.

Ownership: The passed string v stays in the ownership of the caller - libical creates a copy of it.

Usage: // creates new parameter

icalparameter *param = icalparameter_new();

// sets xname

icalparameter_set_xname(param, "X-TEST");

// compare xname

assert(0 == strcmp(icalparameter_get_xname(param), "X-TEST"));

icalparameter_free(param);

◆ icalparameter_set_xvalue()

void icalparameter_set_xvalue	(	icalparameter *	param,
		const char *	v )

Sets the X-value of param to v.

Parameters

param	The icalparameter to change
v	The X-value to set param to

See also: icalparameter_get_xvalue()

Error handling: If either param or v are NULL, it sets icalerrno to ICAL_BARARG_ERROR. If there is an error acquiring memory, it sets errno to ENOMEM.

Ownership: The passed string v stays in the ownership of the caller - libical creates a copy of it.

Usage: // create new parameter

icalparameter *param = icalparameter_new_from_string("X-TEST=FAIL");

// set test to success

icalparameter_set_xvalue(param, "SUCCESS");

// check that it worked

assert(0 == strcmp(icalparameter_get_xvalue(param), "SUCCESS"));

// release memory

icalparameter_free(param);

◆ icalparameter_string_to_kind()

icalparameter_kind icalparameter_string_to_kind ( const char * string )

Returns the icalparameter_kind for a given string.

Parameters

string A string describing an icalparameter_kind

Returns: An icalparameter_kind

Error handling: Returns ICAL_NO_PARAMETER if string is NULL. If it can't find the parameter, depending on the ical_get_unknown_token_handling_setting(), it returns either ICAL_NO_PARAMETER or ICAL_IANA_PARAMETER.

Ownership: Does not take ownership of string.

Usage: assert(icalparameter_string_to_kind("ROLE") == ICAL_ROLE_PARAMETER);

assert(icalparameter_string_to_kind("EMAIL") == ICAL_EMAIL_PARAMETER);

assert(icalparameter_string_to_kind("ID") == ICAL_ID_PARAMETER);

icalparameter_string_to_kind
icalparameter_kind icalparameter_string_to_kind(const char *string)
Returns the icalparameter_kind for a given string.