C API: Implements the StringPrep algorithm. More...

#include "unicode/utypes.h"
#include "unicode/localpointer.h"
#include "unicode/parseerr.h"

Namespaces
	icu
	File coll.h.

Macros
#define	USPREP_DEFAULT 0x0000
	Option to prohibit processing of unassigned code points in the input. More...

#define	USPREP_ALLOW_UNASSIGNED 0x0001
	Option to allow processing of unassigned code points in the input. More...

Typedefs
typedef struct UStringPrepProfile	UStringPrepProfile
	StringPrep API implements the StingPrep framework as described by RFC 3454. More...

typedef enum UStringPrepProfileType	UStringPrepProfileType
	enums for the standard stringprep profile types supported by usprep_openByType. More...

Enumerations
enum	UStringPrepProfileType { USPREP_RFC3491_NAMEPREP, USPREP_RFC3530_NFS4_CS_PREP, USPREP_RFC3530_NFS4_CS_PREP_CI, USPREP_RFC3530_NFS4_CIS_PREP, USPREP_RFC3530_NFS4_MIXED_PREP_PREFIX, USPREP_RFC3530_NFS4_MIXED_PREP_SUFFIX, USPREP_RFC3722_ISCSI, USPREP_RFC3920_NODEPREP, USPREP_RFC3920_RESOURCEPREP, USPREP_RFC4011_MIB, USPREP_RFC4013_SASLPREP, USPREP_RFC4505_TRACE, USPREP_RFC4518_LDAP, USPREP_RFC4518_LDAP_CI }
	enums for the standard stringprep profile types supported by usprep_openByType. More...

Functions
UStringPrepProfile *	usprep_open (const char path, const char fileName, UErrorCode *status)
	Creates a StringPrep profile from the data file. More...

UStringPrepProfile *	usprep_openByType (UStringPrepProfileType type, UErrorCode *status)
	Creates a StringPrep profile for the specified profile type. More...

void	usprep_close (UStringPrepProfile *profile)
	Closes the profile. More...

int32_t	usprep_prepare (const UStringPrepProfile prep, const UChar src, int32_t srcLength, UChar dest, int32_t destCapacity, int32_t options, UParseError parseError, UErrorCode *status)
	Prepare the input buffer for use in applications with the given profile. More...

Detailed Description

C API: Implements the StringPrep algorithm.

Definition in file usprep.h.

Macro Definition Documentation

◆ USPREP_ALLOW_UNASSIGNED

#define USPREP_ALLOW_UNASSIGNED 0x0001

Option to allow processing of unassigned code points in the input.

See also: usprep_prepare

Stable:: ICU 2.8

Definition at line 87 of file usprep.h.

◆ USPREP_DEFAULT

#define USPREP_DEFAULT 0x0000

Option to prohibit processing of unassigned code points in the input.

See also: usprep_prepare

Stable:: ICU 2.8

Definition at line 79 of file usprep.h.

Typedef Documentation

◆ UStringPrepProfile

typedef struct UStringPrepProfile UStringPrepProfile

StringPrep API implements the StingPrep framework as described by RFC 3454.

StringPrep prepares Unicode strings for use in network protocols. Profiles of StingPrep are set of rules and data according to with the Unicode Strings are prepared. Each profiles contains tables which describe how a code point should be treated. The tables are broadly classified into

Unassigned Table: Contains code points that are unassigned in the Unicode Version supported by StringPrep. Currently RFC 3454 supports Unicode 3.2.
Prohibited Table: Contains code points that are prohibited from the output of the StringPrep processing function.
Mapping Table: Contains code points that are deleted from the output or case mapped.

The procedure for preparing Unicode strings:

Map: For each character in the input, check if it has a mapping and, if so, replace it with its mapping.
Normalize: Possibly normalize the result of step 1 using Unicode normalization.
Prohibit: Check for any characters that are not allowed in the output. If any are found, return an error.
Check bidi: Possibly check for right-to-left characters, and if any are found, make sure that the whole string satisfies the requirements for bidirectional strings. If the string does not satisfy the requirements for bidirectional strings, return an error.

Author: Ram Viswanadha The StringPrep profile

Stable:: ICU 2.8

Definition at line 70 of file usprep.h.

◆ UStringPrepProfileType

typedef enum UStringPrepProfileType UStringPrepProfileType

enums for the standard stringprep profile types supported by usprep_openByType.

See also: usprep_openByType

Stable:: ICU 4.2

Enumeration Type Documentation

◆ UStringPrepProfileType

enum UStringPrepProfileType

enums for the standard stringprep profile types supported by usprep_openByType.

See also: usprep_openByType

Stable:: ICU 4.2

Enumerator
USPREP_RFC3491_NAMEPREP	RFC3491 Nameprep. Stable: ICU 4.2
USPREP_RFC3530_NFS4_CS_PREP	RFC3530 nfs4_cs_prep. Stable: ICU 4.2
USPREP_RFC3530_NFS4_CS_PREP_CI	RFC3530 nfs4_cs_prep with case insensitive option. Stable: ICU 4.2
USPREP_RFC3530_NFS4_CIS_PREP	RFC3530 nfs4_cis_prep. Stable: ICU 4.2
USPREP_RFC3530_NFS4_MIXED_PREP_PREFIX	RFC3530 nfs4_mixed_prep for prefix. Stable: ICU 4.2
USPREP_RFC3530_NFS4_MIXED_PREP_SUFFIX	RFC3530 nfs4_mixed_prep for suffix. Stable: ICU 4.2
USPREP_RFC3722_ISCSI	RFC3722 iSCSI. Stable: ICU 4.2
USPREP_RFC3920_NODEPREP	RFC3920 XMPP Nodeprep. Stable: ICU 4.2
USPREP_RFC3920_RESOURCEPREP	RFC3920 XMPP Resourceprep. Stable: ICU 4.2
USPREP_RFC4011_MIB	RFC4011 Policy MIB Stringprep. Stable: ICU 4.2
USPREP_RFC4013_SASLPREP	RFC4013 SASLprep. Stable: ICU 4.2
USPREP_RFC4505_TRACE	RFC4505 trace. Stable: ICU 4.2
USPREP_RFC4518_LDAP	RFC4518 LDAP. Stable: ICU 4.2
USPREP_RFC4518_LDAP_CI	RFC4518 LDAP for case ignore, numeric and stored prefix matching rules. Stable: ICU 4.2

Definition at line 95 of file usprep.h.

Function Documentation

◆ usprep_close()

void usprep_close ( UStringPrepProfile * profile )

Closes the profile.

Parameters

profile The profile to close

Stable:: ICU 2.8

◆ usprep_open()

UStringPrepProfile* usprep_open	(	const char *	path,
		const char *	fileName,
		UErrorCode *	status
	)

Creates a StringPrep profile from the data file.

Parameters

path	string containing the full path pointing to the directory where the profile reside followed by the package name e.g. "/usr/resource/my_app/profiles/mydata" on a Unix system. if NULL, ICU default data files will be used.
fileName	name of the profile file to be opened
status	ICU error code in/out parameter. Must not be NULL. Must fulfill U_SUCCESS before the function call.

Returns: Pointer to UStringPrepProfile that is opened. Should be closed by calling usprep_close()

See also: usprep_close()

Stable:: ICU 2.8

◆ usprep_openByType()

UStringPrepProfile* usprep_openByType	(	UStringPrepProfileType	type,
		UErrorCode *	status
	)

Creates a StringPrep profile for the specified profile type.

Parameters

type	The profile type
status	ICU error code in/out parameter. Must not be NULL. Must fulfill U_SUCCESS before the function call.

Returns: Pointer to UStringPrepProfile that is opened. Should be closed by calling usprep_close()

See also: usprep_close()

Stable:: ICU 4.2

◆ usprep_prepare()

int32_t usprep_prepare	(	const UStringPrepProfile *	prep,
		const UChar *	src,
		int32_t	srcLength,
		UChar *	dest,
		int32_t	destCapacity,
		int32_t	options,
		UParseError *	parseError,
		UErrorCode *	status
	)

Prepare the input buffer for use in applications with the given profile.

This operation maps, normalizes(NFKC), checks for prohibited and BiDi characters in the order defined by RFC 3454 depending on the options specified in the profile.

Parameters

prep	The profile to use
src	Pointer to UChar buffer containing the string to prepare
srcLength	Number of characters in the source string
dest	Pointer to the destination buffer to receive the output
destCapacity	The capacity of destination array
options	A bit set of options:

USPREP_DEFAULT Prohibit processing of unassigned code points in the input
USPREP_ALLOW_UNASSIGNED Treat the unassigned code points are in the input as normal Unicode code points.

Parameters

parseError	Pointer to UParseError struct to receive information on position of error if an error is encountered. Can be NULL.
status	ICU in/out error code parameter. U_INVALID_CHAR_FOUND if src contains unmatched single surrogates. U_INDEX_OUTOFBOUNDS_ERROR if src contains too many code points. U_BUFFER_OVERFLOW_ERROR if destCapacity is not enough

Returns: The number of UChars in the destination buffer

Stable:: ICU 2.8

Namespaces

Macros

Typedefs

Enumerations

Functions

Detailed Description

Macro Definition Documentation

◆ USPREP_ALLOW_UNASSIGNED

◆ USPREP_DEFAULT

Typedef Documentation

◆ UStringPrepProfile

◆ UStringPrepProfileType

Enumeration Type Documentation

◆ UStringPrepProfileType

Function Documentation

◆ usprep_close()

◆ usprep_open()

◆ usprep_openByType()

◆ usprep_prepare()