Quelle uidna.h
Sprache: C
// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
*
* Copyright ( C ) 2003 - 2014 , International Business Machines
* Corporation and others . All Rights Reserved .
*
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* file name : uidna . h
* encoding : UTF - 8
* tab size : 8 ( not used )
* indentation : 4
*
* created on : 2003 feb1
* created by : Ram Viswanadha
*/
#ifndef __UIDNA_H__
#define __UIDNA_H__
#include "unicode/utypes.h"
#if !UCONFIG_NO_IDNA
#include <stdbool.h>
#include "unicode/parseerr.h"
#if U_SHOW_CPLUSPLUS_API
#include "unicode/localpointer.h"
#endif // U_SHOW_CPLUSPLUS_API
/**
* \ file
* \ brief C API : Internationalizing Domain Names in Applications ( IDNA )
*
* IDNA2008 is implemented according to UTS # 46 , see the IDNA C + + class in idna . h .
*
* The C API functions which do take a UIDNA * service object pointer
* implement UTS # 46 and IDNA2008 .
*
* IDNA2003 is obsolete .
* The C API functions which do not take a service object pointer
* implement IDNA2003 . They are all deprecated .
*/
/*
* IDNA option bit set values .
*/
enum {
/**
* Default options value : UTS # 46 nontransitional processing .
* For use in static worker and factory methods .
*
* Since ICU 76 , this is the same as
* UIDNA_NONTRANSITIONAL_TO_ASCII | UIDNA_NONTRANSITIONAL_TO_UNICODE ,
* corresponding to Unicode 15 . 1 UTS # 46 deprecating transitional processing .
* ( These options are ignored by the IDNA2003 implementation . )
*
* Before ICU 76 , this constant did not set any of the options .
*
* @ stable ICU 2 . 6
*/
UIDNA_DEFAULT=
0 x30,
#ifndef U_HIDE_DEPRECATED_API
/**
* Option to allow unassigned code points in domain names and labels .
* For use in static worker and factory methods .
* < p > This option is ignored by the UTS46 implementation .
* ( UTS # 46 disallows unassigned code points . )
* @ deprecated ICU 55 Use UTS # 46 instead via uidna_openUTS46 ( ) or class IDNA .
*/
UIDNA_ALLOW_UNASSIGNED=
1 ,
#endif /* U_HIDE_DEPRECATED_API */
/**
* Option to check whether the input conforms to the STD3 ASCII rules ,
* for example the restriction of labels to LDH characters
* ( ASCII Letters , Digits and Hyphen - Minus ) .
* For use in static worker and factory methods .
* @ stable ICU 2 . 6
*/
UIDNA_USE_STD3_RULES=
2 ,
/**
* IDNA option to check for whether the input conforms to the BiDi rules .
* For use in static worker and factory methods .
* < p > This option is ignored by the IDNA2003 implementation .
* ( IDNA2003 always performs a BiDi check . )
* @ stable ICU 4 . 6
*/
UIDNA_CHECK_BIDI=
4 ,
/**
* IDNA option to check for whether the input conforms to the CONTEXTJ rules .
* For use in static worker and factory methods .
* < p > This option is ignored by the IDNA2003 implementation .
* ( The CONTEXTJ check is new in IDNA2008 . )
* @ stable ICU 4 . 6
*/
UIDNA_CHECK_CONTEXTJ=
8 ,
/**
* IDNA option for nontransitional processing in ToASCII ( ) .
* For use in static worker and factory methods .
*
* < p > By default , ToASCII ( ) uses transitional processing .
* Unicode 15 . 1 UTS # 46 deprecated transitional processing .
*
* < p > This option is ignored by the IDNA2003 implementation .
* ( This is only relevant for compatibility of newer IDNA implementations with IDNA2003 . )
* @ stable ICU 4 . 6
* @ see UIDNA_DEFAULT
*/
UIDNA_NONTRANSITIONAL_TO_ASCII=
0 x10,
/**
* IDNA option for nontransitional processing in ToUnicode ( ) .
* For use in static worker and factory methods .
*
* < p > By default , ToUnicode ( ) uses transitional processing .
* Unicode 15 . 1 UTS # 46 deprecated transitional processing .
*
* < p > This option is ignored by the IDNA2003 implementation .
* ( This is only relevant for compatibility of newer IDNA implementations with IDNA2003 . )
* @ stable ICU 4 . 6
* @ see UIDNA_DEFAULT
*/
UIDNA_NONTRANSITIONAL_TO_UNICODE=
0 x20,
/**
* IDNA option to check for whether the input conforms to the CONTEXTO rules .
* For use in static worker and factory methods .
* < p > This option is ignored by the IDNA2003 implementation .
* ( The CONTEXTO check is new in IDNA2008 . )
* < p > This is for use by registries for IDNA2008 conformance .
* UTS # 46 does not require the CONTEXTO check .
* @ stable ICU 49
*/
UIDNA_CHECK_CONTEXTO=
0 x40
};
/**
* Opaque C service object type for the new IDNA API .
* @ stable ICU 4 . 6
*/
struct UIDNA;
typedef struct UIDNA UIDNA;
/**< C typedef for struct UIDNA. @stable ICU 4.6 */
/**
* Returns a UIDNA instance which implements UTS # 46 .
* Returns an unmodifiable instance , owned by the caller .
* Cache it for multiple operations , and uidna_close ( ) it when done .
* The instance is thread - safe , that is , it can be used concurrently .
*
* For details about the UTS # 46 implementation see the IDNA C + + class in idna . h .
*
* @ param options Bit set to modify the processing and error checking .
* These should include UIDNA_DEFAULT , or
* UIDNA_NONTRANSITIONAL_TO_ASCII | UIDNA_NONTRANSITIONAL_TO_UNICODE .
* See option bit set values in uidna . h .
* @ param pErrorCode Standard ICU error code . Its input value must
* pass the U_SUCCESS ( ) test , or else the function returns
* immediately . Check for U_FAILURE ( ) on output or use with
* function chaining . ( See User Guide for details . )
* @ return the UTS # 46 UIDNA instance , if successful
* @ stable ICU 4 . 6
*/
U_CAPI UIDNA * U_EXPORT2
uidna_openUTS46(uint32_t options, UErrorCode *pErrorCode);
/**
* Closes a UIDNA instance .
* @ param idna UIDNA instance to be closed
* @ stable ICU 4 . 6
*/
U_CAPI
void U_EXPORT2
uidna_close(UIDNA *idna);
#if U_SHOW_CPLUSPLUS_API
U_NAMESPACE_BEGIN
/**
* \ class LocalUIDNAPointer
* " Smart pointer " class , closes a UIDNA via uidna_close ( ) .
* For most methods see the LocalPointerBase base class .
*
* @ see LocalPointerBase
* @ see LocalPointer
* @ stable ICU 4 . 6
*/
U_DEFINE_LOCAL_OPEN_POINTER(LocalUIDNAPointer, UIDNA, uidna_close);
U_NAMESPACE_END
#endif
/**
* Output container for IDNA processing errors .
* Initialize with UIDNA_INFO_INITIALIZER :
* \ code
* UIDNAInfo info = UIDNA_INFO_INITIALIZER ;
* int32_t length = uidna_nameToASCII ( . . . , & info , & errorCode ) ;
* if ( U_SUCCESS ( errorCode ) & & info . errors ! = 0 ) { . . . }
* \ endcode
* @ stable ICU 4 . 6
*/
typedef struct UIDNAInfo {
/** sizeof(UIDNAInfo) @stable ICU 4.6 */
int16_t size;
/**
* Set to true if transitional and nontransitional processing produce different results .
* For details see C + + IDNAInfo : : isTransitionalDifferent ( ) .
* @ stable ICU 4 . 6
*/
UBool isTransitionalDifferent;
UBool reservedB3;
/**< Reserved field, do not use. @internal */
/**
* Bit set indicating IDNA processing errors . 0 if no errors .
* See UIDNA_ERROR_ . . . constants .
* @ stable ICU 4 . 6
*/
uint32_t errors;
int32_t reservedI2;
/**< Reserved field, do not use. @internal */
int32_t reservedI3;
/**< Reserved field, do not use. @internal */
} UIDNAInfo;
/**
* Static initializer for a UIDNAInfo struct .
* @ stable ICU 4 . 6
*/
#define UIDNA_INFO_INITIALIZER { \
(int16_t)
sizeof (UIDNAInfo), \
false, false, \
0 ,
0 ,
0 }
/**
* Converts a single domain name label into its ASCII form for DNS lookup .
* If any processing step fails , then pInfo - > errors will be non - zero and
* the result might not be an ASCII string .
* The label might be modified according to the types of errors .
* Labels with severe errors will be left in ( or turned into ) their Unicode form .
*
* The UErrorCode indicates an error only in exceptional cases ,
* such as a U_MEMORY_ALLOCATION_ERROR .
*
* @ param idna UIDNA instance
* @ param label Input domain name label
* @ param length Label length , or - 1 if NUL - terminated
* @ param dest Destination string buffer
* @ param capacity Destination buffer capacity
* @ param pInfo Output container of IDNA processing details .
* @ param pErrorCode Standard ICU error code . Its input value must
* pass the U_SUCCESS ( ) test , or else the function returns
* immediately . Check for U_FAILURE ( ) on output or use with
* function chaining . ( See User Guide for details . )
* @ return destination string length
* @ stable ICU 4 . 6
*/
U_CAPI int32_t U_EXPORT2
uidna_labelToASCII(
const UIDNA *idna,
const UChar *label, int32_t length,
UChar *dest, int32_t capacity,
UIDNAInfo *pInfo, UErrorCode *pErrorCode);
/**
* Converts a single domain name label into its Unicode form for human - readable display .
* If any processing step fails , then pInfo - > errors will be non - zero .
* The label might be modified according to the types of errors .
*
* The UErrorCode indicates an error only in exceptional cases ,
* such as a U_MEMORY_ALLOCATION_ERROR .
*
* @ param idna UIDNA instance
* @ param label Input domain name label
* @ param length Label length , or - 1 if NUL - terminated
* @ param dest Destination string buffer
* @ param capacity Destination buffer capacity
* @ param pInfo Output container of IDNA processing details .
* @ param pErrorCode Standard ICU error code . Its input value must
* pass the U_SUCCESS ( ) test , or else the function returns
* immediately . Check for U_FAILURE ( ) on output or use with
* function chaining . ( See User Guide for details . )
* @ return destination string length
* @ stable ICU 4 . 6
*/
U_CAPI int32_t U_EXPORT2
uidna_labelToUnicode(
const UIDNA *idna,
const UChar *label, int32_t length,
UChar *dest, int32_t capacity,
UIDNAInfo *pInfo, UErrorCode *pErrorCode);
/**
* Converts a whole domain name into its ASCII form for DNS lookup .
* If any processing step fails , then pInfo - > errors will be non - zero and
* the result might not be an ASCII string .
* The domain name might be modified according to the types of errors .
* Labels with severe errors will be left in ( or turned into ) their Unicode form .
*
* The UErrorCode indicates an error only in exceptional cases ,
* such as a U_MEMORY_ALLOCATION_ERROR .
*
* @ param idna UIDNA instance
* @ param name Input domain name
* @ param length Domain name length , or - 1 if NUL - terminated
* @ param dest Destination string buffer
* @ param capacity Destination buffer capacity
* @ param pInfo Output container of IDNA processing details .
* @ param pErrorCode Standard ICU error code . Its input value must
* pass the U_SUCCESS ( ) test , or else the function returns
* immediately . Check for U_FAILURE ( ) on output or use with
* function chaining . ( See User Guide for details . )
* @ return destination string length
* @ stable ICU 4 . 6
*/
U_CAPI int32_t U_EXPORT2
uidna_nameToASCII(
const UIDNA *idna,
const UChar *name, int32_t length,
UChar *dest, int32_t capacity,
UIDNAInfo *pInfo, UErrorCode *pErrorCode);
/**
* Converts a whole domain name into its Unicode form for human - readable display .
* If any processing step fails , then pInfo - > errors will be non - zero .
* The domain name might be modified according to the types of errors .
*
* The UErrorCode indicates an error only in exceptional cases ,
* such as a U_MEMORY_ALLOCATION_ERROR .
*
* @ param idna UIDNA instance
* @ param name Input domain name
* @ param length Domain name length , or - 1 if NUL - terminated
* @ param dest Destination string buffer
* @ param capacity Destination buffer capacity
* @ param pInfo Output container of IDNA processing details .
* @ param pErrorCode Standard ICU error code . Its input value must
* pass the U_SUCCESS ( ) test , or else the function returns
* immediately . Check for U_FAILURE ( ) on output or use with
* function chaining . ( See User Guide for details . )
* @ return destination string length
* @ stable ICU 4 . 6
*/
U_CAPI int32_t U_EXPORT2
uidna_nameToUnicode(
const UIDNA *idna,
const UChar *name, int32_t length,
UChar *dest, int32_t capacity,
UIDNAInfo *pInfo, UErrorCode *pErrorCode);
/* UTF-8 versions of the processing methods --------------------------------- */
/**
* Converts a single domain name label into its ASCII form for DNS lookup .
* UTF - 8 version of uidna_labelToASCII ( ) , same behavior .
*
* @ param idna UIDNA instance
* @ param label Input domain name label
* @ param length Label length , or - 1 if NUL - terminated
* @ param dest Destination string buffer
* @ param capacity Destination buffer capacity
* @ param pInfo Output container of IDNA processing details .
* @ param pErrorCode Standard ICU error code . Its input value must
* pass the U_SUCCESS ( ) test , or else the function returns
* immediately . Check for U_FAILURE ( ) on output or use with
* function chaining . ( See User Guide for details . )
* @ return destination string length
* @ stable ICU 4 . 6
*/
U_CAPI int32_t U_EXPORT2
uidna_labelToASCII_UTF8(
const UIDNA *idna,
const char *label, int32_t length,
char *dest, int32_t capacity,
UIDNAInfo *pInfo, UErrorCode *pErrorCode);
/**
* Converts a single domain name label into its Unicode form for human - readable display .
* UTF - 8 version of uidna_labelToUnicode ( ) , same behavior .
*
* @ param idna UIDNA instance
* @ param label Input domain name label
* @ param length Label length , or - 1 if NUL - terminated
* @ param dest Destination string buffer
* @ param capacity Destination buffer capacity
* @ param pInfo Output container of IDNA processing details .
* @ param pErrorCode Standard ICU error code . Its input value must
* pass the U_SUCCESS ( ) test , or else the function returns
* immediately . Check for U_FAILURE ( ) on output or use with
* function chaining . ( See User Guide for details . )
* @ return destination string length
* @ stable ICU 4 . 6
*/
U_CAPI int32_t U_EXPORT2
uidna_labelToUnicodeUTF8(
const UIDNA *idna,
const char *label, int32_t length,
char *dest, int32_t capacity,
UIDNAInfo *pInfo, UErrorCode *pErrorCode);
/**
* Converts a whole domain name into its ASCII form for DNS lookup .
* UTF - 8 version of uidna_nameToASCII ( ) , same behavior .
*
* @ param idna UIDNA instance
* @ param name Input domain name
* @ param length Domain name length , or - 1 if NUL - terminated
* @ param dest Destination string buffer
* @ param capacity Destination buffer capacity
* @ param pInfo Output container of IDNA processing details .
* @ param pErrorCode Standard ICU error code . Its input value must
* pass the U_SUCCESS ( ) test , or else the function returns
* immediately . Check for U_FAILURE ( ) on output or use with
* function chaining . ( See User Guide for details . )
* @ return destination string length
* @ stable ICU 4 . 6
*/
U_CAPI int32_t U_EXPORT2
uidna_nameToASCII_UTF8(
const UIDNA *idna,
const char *name, int32_t length,
char *dest, int32_t capacity,
UIDNAInfo *pInfo, UErrorCode *pErrorCode);
/**
* Converts a whole domain name into its Unicode form for human - readable display .
* UTF - 8 version of uidna_nameToUnicode ( ) , same behavior .
*
* @ param idna UIDNA instance
* @ param name Input domain name
* @ param length Domain name length , or - 1 if NUL - terminated
* @ param dest Destination string buffer
* @ param capacity Destination buffer capacity
* @ param pInfo Output container of IDNA processing details .
* @ param pErrorCode Standard ICU error code . Its input value must
* pass the U_SUCCESS ( ) test , or else the function returns
* immediately . Check for U_FAILURE ( ) on output or use with
* function chaining . ( See User Guide for details . )
* @ return destination string length
* @ stable ICU 4 . 6
*/
U_CAPI int32_t U_EXPORT2
uidna_nameToUnicodeUTF8(
const UIDNA *idna,
const char *name, int32_t length,
char *dest, int32_t capacity,
UIDNAInfo *pInfo, UErrorCode *pErrorCode);
/*
* IDNA error bit set values .
* When a domain name or label fails a processing step or does not meet the
* validity criteria , then one or more of these error bits are set .
*/
enum {
/**
* A non - final domain name label ( or the whole domain name ) is empty .
* @ stable ICU 4 . 6
*/
UIDNA_ERROR_EMPTY_LABEL=
1 ,
/**
* A domain name label is longer than 63 bytes .
* ( See STD13 / RFC1034 3 . 1 . Name space specifications and terminology . )
* This is only checked in ToASCII operations , and only if the output label is all - ASCII .
* @ stable ICU 4 . 6
*/
UIDNA_ERROR_LABEL_TOO_LONG=
2 ,
/**
* A domain name is longer than 255 bytes in its storage form .
* ( See STD13 / RFC1034 3 . 1 . Name space specifications and terminology . )
* This is only checked in ToASCII operations , and only if the output domain name is all - ASCII .
* @ stable ICU 4 . 6
*/
UIDNA_ERROR_DOMAIN_NAME_TOO_LONG=
4 ,
/**
* A label starts with a hyphen - minus ( ' - ' ) .
* @ stable ICU 4 . 6
*/
UIDNA_ERROR_LEADING_HYPHEN=
8 ,
/**
* A label ends with a hyphen - minus ( ' - ' ) .
* @ stable ICU 4 . 6
*/
UIDNA_ERROR_TRAILING_HYPHEN=
0 x10,
/**
* A label contains hyphen - minus ( ' - ' ) in the third and fourth positions .
* @ stable ICU 4 . 6
*/
UIDNA_ERROR_HYPHEN_3_4=
0 x20,
/**
* A label starts with a combining mark .
* @ stable ICU 4 . 6
*/
UIDNA_ERROR_LEADING_COMBINING_MARK=
0 x40,
/**
* A label or domain name contains disallowed characters .
* @ stable ICU 4 . 6
*/
UIDNA_ERROR_DISALLOWED=
0 x80,
/**
* A label starts with " xn - - " but does not contain valid Punycode .
* That is , an xn - - label failed Punycode decoding .
* @ stable ICU 4 . 6
*/
UIDNA_ERROR_PUNYCODE=
0 x100,
/**
* A label contains a dot = full stop .
* This can occur in an input string for a single - label function .
* @ stable ICU 4 . 6
*/
UIDNA_ERROR_LABEL_HAS_DOT=
0 x200,
/**
* An ACE label does not contain a valid label string .
* The label was successfully ACE ( Punycode ) decoded but the resulting
* string had severe validation errors . For example ,
* it might contain characters that are not allowed in ACE labels ,
* or it might not be normalized .
* @ stable ICU 4 . 6
*/
UIDNA_ERROR_INVALID_ACE_LABEL=
0 x400,
/**
* A label does not meet the IDNA BiDi requirements ( for right - to - left characters ) .
* @ stable ICU 4 . 6
*/
UIDNA_ERROR_BIDI=
0 x800,
/**
* A label does not meet the IDNA CONTEXTJ requirements .
* @ stable ICU 4 . 6
*/
UIDNA_ERROR_CONTEXTJ=
0 x1000,
/**
* A label does not meet the IDNA CONTEXTO requirements for punctuation characters .
* Some punctuation characters " Would otherwise have been DISALLOWED "
* but are allowed in certain contexts . ( RFC 5892 )
* @ stable ICU 49
*/
UIDNA_ERROR_CONTEXTO_PUNCTUATION=
0 x2000,
/**
* A label does not meet the IDNA CONTEXTO requirements for digits .
* Arabic - Indic Digits ( U + 066 x ) must not be mixed with Extended Arabic - Indic Digits ( U + 06 Fx ) .
* @ stable ICU 49
*/
UIDNA_ERROR_CONTEXTO_DIGITS=
0 x4000
};
#ifndef U_HIDE_DEPRECATED_API
/* IDNA2003 API ------------------------------------------------------------- */
/**
* IDNA2003 : This function implements the ToASCII operation as defined in the IDNA RFC .
* This operation is done on < b > single labels < / b > before sending it to something that expects
* ASCII names . A label is an individual part of a domain name . Labels are usually
* separated by dots ; e . g . " www . example . com " is composed of 3 labels " www " , " example " , and " com " .
*
* IDNA2003 API Overview :
*
* The uidna_ API implements the IDNA protocol as defined in the IDNA RFC
* ( http : //www.ietf.org/rfc/rfc3490.txt).
* The RFC defines 2 operations : ToASCII and ToUnicode . Domain name labels
* containing non - ASCII code points are processed by the
* ToASCII operation before passing it to resolver libraries . Domain names
* that are obtained from resolver libraries are processed by the
* ToUnicode operation before displaying the domain name to the user .
* IDNA requires that implementations process input strings with Nameprep
* ( http : //www.ietf.org/rfc/rfc3491.txt),
* which is a profile of Stringprep ( http : //www.ietf.org/rfc/rfc3454.txt),
* and then with Punycode ( http : //www.ietf.org/rfc/rfc3492.txt).
* Implementations of IDNA MUST fully implement Nameprep and Punycode ;
* neither Nameprep nor Punycode are optional .
* The input and output of ToASCII and ToUnicode operations are Unicode
* and are designed to be chainable , i . e . , applying ToASCII or ToUnicode operations
* multiple times to an input string will yield the same result as applying the operation
* once .
* ToUnicode ( ToUnicode ( ToUnicode . . . ( ToUnicode ( string ) ) ) ) = = ToUnicode ( string )
* ToASCII ( ToASCII ( ToASCII . . . ( ToASCII ( string ) ) ) = = ToASCII ( string ) .
*
* @ param src Input UChar array containing label in Unicode .
* @ param srcLength Number of UChars in src , or - 1 if NUL - terminated .
* @ param dest Output UChar array with ASCII ( ACE encoded ) label .
* @ param destCapacity Size of dest .
* @ param options A bit set of options :
*
* - UIDNA_DEFAULT Use default options , i . e . , do not process unassigned code points
* and do not use STD3 ASCII rules
* If unassigned code points are found the operation fails with
* U_UNASSIGNED_ERROR error code .
*
* - UIDNA_ALLOW_UNASSIGNED Unassigned values can be converted to ASCII for query operations
* If this option is set , the unassigned code points are in the input
* are treated as normal Unicode code points .
*
* - UIDNA_USE_STD3_RULES Use STD3 ASCII rules for host name syntax restrictions
* If this option is set and the input does not satisfy STD3 rules ,
* the operation will fail with U_IDNA_STD3_ASCII_RULES_ERROR
*
* @ param parseError Pointer to UParseError struct to receive information on position
* of error if an error is encountered . Can be NULL .
* @ param 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
* @ return The length of the result string , if successful - or in case of a buffer overflow ,
* in which case it will be greater than destCapacity .
* @ deprecated ICU 55 Use UTS # 46 instead via uidna_openUTS46 ( ) or class IDNA .
*/
U_DEPRECATED int32_t U_EXPORT2
uidna_toASCII(
const UChar* src, int32_t srcLength,
UChar* dest, int32_t destCapacity,
int32_t options,
UParseError* parseError,
UErrorCode* status);
/**
* IDNA2003 : This function implements the ToUnicode operation as defined in the IDNA RFC .
* This operation is done on < b > single labels < / b > before sending it to something that expects
* Unicode names . A label is an individual part of a domain name . Labels are usually
* separated by dots ; for e . g . " www . example . com " is composed of 3 labels " www " , " example " , and " com " .
*
* @ param src Input UChar array containing ASCII ( ACE encoded ) label .
* @ param srcLength Number of UChars in src , or - 1 if NUL - terminated .
* @ param dest Output Converted UChar array containing Unicode equivalent of label .
* @ param destCapacity Size of dest .
* @ param options A bit set of options :
*
* - UIDNA_DEFAULT Use default options , i . e . , do not process unassigned code points
* and do not use STD3 ASCII rules
* If unassigned code points are found the operation fails with
* U_UNASSIGNED_ERROR error code .
*
* - UIDNA_ALLOW_UNASSIGNED Unassigned values can be converted to ASCII for query operations
* If this option is set , the unassigned code points are in the input
* are treated as normal Unicode code points . < b > Note : < / b > This option is
* required on toUnicode operation because the RFC mandates
* verification of decoded ACE input by applying toASCII and comparing
* its output with source
*
* - UIDNA_USE_STD3_RULES Use STD3 ASCII rules for host name syntax restrictions
* If this option is set and the input does not satisfy STD3 rules ,
* the operation will fail with U_IDNA_STD3_ASCII_RULES_ERROR
*
* @ param parseError Pointer to UParseError struct to receive information on position
* of error if an error is encountered . Can be NULL .
* @ param 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
* @ return The length of the result string , if successful - or in case of a buffer overflow ,
* in which case it will be greater than destCapacity .
* @ deprecated ICU 55 Use UTS # 46 instead via uidna_openUTS46 ( ) or class IDNA .
*/
U_DEPRECATED int32_t U_EXPORT2
uidna_toUnicode(
const UChar* src, int32_t srcLength,
UChar* dest, int32_t destCapacity,
int32_t options,
UParseError* parseError,
UErrorCode* status);
/**
* IDNA2003 : Convenience function that implements the IDNToASCII operation as defined in the IDNA RFC .
* This operation is done on complete domain names , e . g : " www . example . com " .
* It is important to note that this operation can fail . If it fails , then the input
* domain name cannot be used as an Internationalized Domain Name and the application
* should have methods defined to deal with the failure .
*
* < b > Note : < / b > IDNA RFC specifies that a conformant application should divide a domain name
* into separate labels , decide whether to apply allowUnassigned and useSTD3ASCIIRules on each ,
* and then convert . This function does not offer that level of granularity . The options once
* set will apply to all labels in the domain name
*
* @ param src Input UChar array containing IDN in Unicode .
* @ param srcLength Number of UChars in src , or - 1 if NUL - terminated .
* @ param dest Output UChar array with ASCII ( ACE encoded ) IDN .
* @ param destCapacity Size of dest .
* @ param options A bit set of options :
*
* - UIDNA_DEFAULT Use default options , i . e . , do not process unassigned code points
* and do not use STD3 ASCII rules
* If unassigned code points are found the operation fails with
* U_UNASSIGNED_CODE_POINT_FOUND error code .
*
* - UIDNA_ALLOW_UNASSIGNED Unassigned values can be converted to ASCII for query operations
* If this option is set , the unassigned code points are in the input
* are treated as normal Unicode code points .
*
* - UIDNA_USE_STD3_RULES Use STD3 ASCII rules for host name syntax restrictions
* If this option is set and the input does not satisfy STD3 rules ,
* the operation will fail with U_IDNA_STD3_ASCII_RULES_ERROR
*
* @ param parseError Pointer to UParseError struct to receive information on position
* of error if an error is encountered . Can be NULL .
* @ param 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
* @ return The length of the result string , if successful - or in case of a buffer overflow ,
* in which case it will be greater than destCapacity .
* @ deprecated ICU 55 Use UTS # 46 instead via uidna_openUTS46 ( ) or class IDNA .
*/
U_DEPRECATED int32_t U_EXPORT2
uidna_IDNToASCII(
const UChar* src, int32_t srcLength,
UChar* dest, int32_t destCapacity,
int32_t options,
UParseError* parseError,
UErrorCode* status);
/**
* IDNA2003 : Convenience function that implements the IDNToUnicode operation as defined in the IDNA RFC .
* This operation is done on complete domain names , e . g : " www . example . com " .
*
* < b > Note : < / b > IDNA RFC specifies that a conformant application should divide a domain name
* into separate labels , decide whether to apply allowUnassigned and useSTD3ASCIIRules on each ,
* and then convert . This function does not offer that level of granularity . The options once
* set will apply to all labels in the domain name
*
* @ param src Input UChar array containing IDN in ASCII ( ACE encoded ) form .
* @ param srcLength Number of UChars in src , or - 1 if NUL - terminated .
* @ param dest Output UChar array containing Unicode equivalent of source IDN .
* @ param destCapacity Size of dest .
* @ param options A bit set of options :
*
* - UIDNA_DEFAULT Use default options , i . e . , do not process unassigned code points
* and do not use STD3 ASCII rules
* If unassigned code points are found the operation fails with
* U_UNASSIGNED_CODE_POINT_FOUND error code .
*
* - UIDNA_ALLOW_UNASSIGNED Unassigned values can be converted to ASCII for query operations
* If this option is set , the unassigned code points are in the input
* are treated as normal Unicode code points .
*
* - UIDNA_USE_STD3_RULES Use STD3 ASCII rules for host name syntax restrictions
* If this option is set and the input does not satisfy STD3 rules ,
* the operation will fail with U_IDNA_STD3_ASCII_RULES_ERROR
*
* @ param parseError Pointer to UParseError struct to receive information on position
* of error if an error is encountered . Can be NULL .
* @ param 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
* @ return The length of the result string , if successful - or in case of a buffer overflow ,
* in which case it will be greater than destCapacity .
* @ deprecated ICU 55 Use UTS # 46 instead via uidna_openUTS46 ( ) or class IDNA .
*/
U_DEPRECATED int32_t U_EXPORT2
uidna_IDNToUnicode(
const UChar* src, int32_t srcLength,
UChar* dest, int32_t destCapacity,
int32_t options,
UParseError* parseError,
UErrorCode* status);
/**
* IDNA2003 : Compare two IDN strings for equivalence .
* This function splits the domain names into labels and compares them .
* According to IDN RFC , whenever two labels are compared , they are
* considered equal if and only if their ASCII forms ( obtained by
* applying toASCII ) match using an case - insensitive ASCII comparison .
* Two domain names are considered a match if and only if all labels
* match regardless of whether label separators match .
*
* @ param s1 First source string .
* @ param length1 Length of first source string , or - 1 if NUL - terminated .
*
* @ param s2 Second source string .
* @ param length2 Length of second source string , or - 1 if NUL - terminated .
* @ param options A bit set of options :
*
* - UIDNA_DEFAULT Use default options , i . e . , do not process unassigned code points
* and do not use STD3 ASCII rules
* If unassigned code points are found the operation fails with
* U_UNASSIGNED_CODE_POINT_FOUND error code .
*
* - UIDNA_ALLOW_UNASSIGNED Unassigned values can be converted to ASCII for query operations
* If this option is set , the unassigned code points are in the input
* are treated as normal Unicode code points .
*
* - UIDNA_USE_STD3_RULES Use STD3 ASCII rules for host name syntax restrictions
* If this option is set and the input does not satisfy STD3 rules ,
* the operation will fail with U_IDNA_STD3_ASCII_RULES_ERROR
*
* @ param status ICU error code in / out parameter .
* Must fulfill U_SUCCESS before the function call .
* @ return < 0 or 0 or > 0 as usual for string comparisons
* @ deprecated ICU 55 Use UTS # 46 instead via uidna_openUTS46 ( ) or class IDNA .
* /
U_DEPRECATED int32_t U_EXPORT2
uidna_compare ( const UChar * s1 , int32_t length1 ,
const UChar * s2 , int32_t length2 ,
int32_t options ,
UErrorCode * status ) ;
# endif #endif /* U_HIDE_DEPRECATED_API */
#endif /* #if !UCONFIG_NO_IDNA */
#endif
Messung V0.5 in Prozent C=95 H=88 G=91
¤ Dauer der Verarbeitung: 0.40 Sekunden
(vorverarbeitet am 2026-08-26)
¤
*© Formatika GbR, Deutschland
2026-08-25
Neuigkeiten
Aktuelles
Motto des Tages
Open Source Software
Jenseits des Üblichen ....
Besucherstatistik
Statistik
#Sources=434850
#Domains=655579