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/*
*******************************************************************************
*
* Copyright (C) 2003-2004, International Business Machines
* Corporation and others. All Rights Reserved.
*
*******************************************************************************
* file name: idnaref.h
* encoding: US-ASCII
* tab size: 8 (not used)
* indentation:4
*
* created on: 2003feb1
* created by: Ram Viswanadha
*/
#ifndef __IDNAREF_H__
#define __IDNAREF_H__
#include "unicode/utypes.h"
#if !UCONFIG_NO_IDNA
#include "unicode/parseerr.h"
#define IDNAREF_DEFAULT 0x0000
#define IDNAREF_ALLOW_UNASSIGNED 0x0001
#define IDNAREF_USE_STD3_RULES 0x0002
/**
* This function implements the ToASCII operation as defined in the IDNA draft.
* 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; for e.g." "www.example.com" is composed of 3 labels
* "www","example", and "com".
*
*
* @param src Input Unicode label.
* @param srcLength Number of UChars in src, or -1 if NUL-terminated.
* @param dest Output Unicode array with ACE encoded ASCII label.
* @param destCapacity Size of dest.
* @param options A bit set of options:
*
* - idnaref_UNASSIGNED Unassigned values can be converted to ASCII for query operations
* If TRUE unassigned values are treated as normal Unicode code points.
* If FALSE the operation fails with U_UNASSIGNED_CODE_POINT_FOUND error code.
* - idnaref_USE_STD3_RULES Use STD3 ASCII rules for host name syntax restrictions
* If TRUE and the input does not statisfy STD3 rules, the operation
* will fail with U_IDNA_STD3_ASCII_RULES_ERROR
*
* @param parseError Pointer to UParseError struct to recieve 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 Number of ASCII characters converted.
* @draft ICU 2.6
*/
U_CFUNC int32_t U_EXPORT2
idnaref_toASCII(const UChar* src, int32_t srcLength,
UChar* dest, int32_t destCapacity,
int32_t options,
UParseError* parseError,
UErrorCode* status);
/**
* This function implements the ToUnicode operation as defined in the IDNA draft.
* 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; for e.g." "www.example.com" is composed of 3 labels
* "www","example", and "com".
*
* @param src Input ASCII (ACE encoded) label.
* @param srcLength Number of UChars in src, or -1 if NUL-terminated.
* @param dest Output Converted Unicode array.
* @param destCapacity Size of dest.
* @param options A bit set of options:
*
* - idnaref_UNASSIGNED Unassigned values can be converted to ASCII for query operations
* If TRUE unassigned values are treated as normal Unicode code points.
* If FALSE the operation fails with U_UNASSIGNED_CODE_POINT_FOUND error code.
* - idnaref_USE_STD3_RULES Use STD3 ASCII rules for host name syntax restrictions
* If TRUE and the input does not statisfy STD3 rules, the operation
* will fail with U_IDNA_STD3_ASCII_RULES_ERROR
*
* @param parseError Pointer to UParseError struct to recieve 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 Number of Unicode characters converted.
* @draft ICU 2.6
*/
U_CFUNC int32_t U_EXPORT2
idnaref_toUnicode(const UChar* src, int32_t srcLength,
UChar* dest, int32_t destCapacity,
int32_t options,
UParseError* parseError,
UErrorCode* status);
/**
* Convenience function that implements the IDNToASCII operation as defined in the IDNA draft.
* 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 draft 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 ASCII IDN.
* @param srcLength Number of UChars in src, or -1 if NUL-terminated.
* @param dest Output Unicode array.
* @param destCapacity Size of dest.
* @param options A bit set of options:
*
* - idnaref_UNASSIGNED Unassigned values can be converted to ASCII for query operations
* If TRUE unassigned values are treated as normal Unicode code points.
* If FALSE the operation fails with U_UNASSIGNED_CODE_POINT_FOUND error code.
* - idnaref_USE_STD3_RULES Use STD3 ASCII rules for host name syntax restrictions
* If TRUE and the input does not statisfy STD3 rules, the operation
* will fail with U_IDNA_STD3_ASCII_RULES_ERROR
*
* @param parseError Pointer to UParseError struct to recieve 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 Number of ASCII characters converted.
* @draft ICU 2.6
*/
U_CFUNC int32_t U_EXPORT2
idnaref_IDNToASCII( const UChar* src, int32_t srcLength,
UChar* dest, int32_t destCapacity,
int32_t options,
UParseError* parseError,
UErrorCode* status);
/**
* Convenience function that implements the IDNToUnicode operation as defined in the IDNA draft.
* This operation is done on complete domain names, e.g: "www.example.com".
*
* <b>Note:</b> IDNA draft 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 Unicode IDN.
* @param srcLength Number of UChars in src, or -1 if NUL-terminated.
* @param dest Output ASCII array.
* @param destCapacity Size of dest.
* @param options A bit set of options:
*
* - idnaref_UNASSIGNED Unassigned values can be converted to ASCII for query operations
* If TRUE unassigned values are treated as normal Unicode code points.
* If FALSE the operation fails with U_UNASSIGNED_CODE_POINT_FOUND error code.
* - idnaref_USE_STD3_RULES Use STD3 ASCII rules for host name syntax restrictions
* If TRUE and the input does not statisfy STD3 rules, the operation
* will fail with U_IDNA_STD3_ASCII_RULES_ERROR
*
* @param parseError Pointer to UParseError struct to recieve 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 Number of ASCII characters converted.
* @draft ICU 2.6
*/
U_CFUNC int32_t U_EXPORT2
idnaref_IDNToUnicode( const UChar* src, int32_t srcLength,
UChar* dest, int32_t destCapacity,
int32_t options,
UParseError* parseError,
UErrorCode* status);
/**
* Compare two strings for IDNs for equivalence.
* This function splits the domain names into labels and compares them.
* According to IDN draft, 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:
*
* - idnaref_UNASSIGNED Unassigned values can be converted to ASCII for query operations
* If TRUE unassigned values are treated as normal Unicode code points.
* If FALSE the operation fails with U_UNASSIGNED_CODE_POINT_FOUND error code.
* - idnaref_USE_STD3_RULES Use STD3 ASCII rules for host name syntax restrictions
* If TRUE and the input does not statisfy 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
* @draft ICU 2.6
*/
U_CFUNC int32_t U_EXPORT2
idnaref_compare( const UChar *s1, int32_t length1,
const UChar *s2, int32_t length2,
int32_t options,
UErrorCode* status);
#endif /* #if !UCONFIG_NO_IDNA */
#endif
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