| /* |
| ******************************************************************************* |
| * |
| * Copyright (C) 2003-2012, International Business Machines |
| * Corporation and others. All Rights Reserved. |
| * |
| ******************************************************************************* |
| * file name: uidna.h |
| * encoding: US-ASCII |
| * tab size: 8 (not used) |
| * indentation:4 |
| * |
| * created on: 2003feb1 |
| * created by: Ram Viswanadha |
| */ |
| |
| #ifndef __UIDNA_H__ |
| #define __UIDNA_H__ |
| |
| #include "unicode/utypes.h" |
| |
| #if !UCONFIG_NO_IDNA |
| |
| #include "unicode/localpointer.h" |
| #include "unicode/parseerr.h" |
| |
| /** |
| * \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. |
| * The C API functions which do not take a service object pointer |
| * implement IDNA2003. |
| */ |
| |
| /* |
| * IDNA option bit set values. |
| */ |
| enum { |
| /** |
| * Default options value: None of the other options are set. |
| * For use in static worker and factory methods. |
| * @stable ICU 2.6 |
| */ |
| UIDNA_DEFAULT=0, |
| /** |
| * 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.) |
| * @stable ICU 2.6 |
| */ |
| UIDNA_ALLOW_UNASSIGNED=1, |
| /** |
| * 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. |
| * <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 |
| */ |
| UIDNA_NONTRANSITIONAL_TO_ASCII=0x10, |
| /** |
| * IDNA option for nontransitional processing in ToUnicode(). |
| * For use in static worker and factory methods. |
| * <p>By default, ToUnicode() uses 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 |
| */ |
| UIDNA_NONTRANSITIONAL_TO_UNICODE=0x20, |
| #ifndef U_HIDE_DRAFT_API |
| /** |
| * 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. |
| * @draft ICU 49 |
| */ |
| UIDNA_CHECK_CONTEXTO=0x40 |
| #endif /* U_HIDE_DRAFT_API */ |
| }; |
| |
| /** |
| * 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. |
| * 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_STABLE 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_STABLE 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_STABLE 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_STABLE 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_STABLE 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_STABLE 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_STABLE 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_STABLE 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_STABLE 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_STABLE 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=0x10, |
| /** |
| * A label contains hyphen-minus ('-') in the third and fourth positions. |
| * @stable ICU 4.6 |
| */ |
| UIDNA_ERROR_HYPHEN_3_4=0x20, |
| /** |
| * A label starts with a combining mark. |
| * @stable ICU 4.6 |
| */ |
| UIDNA_ERROR_LEADING_COMBINING_MARK=0x40, |
| /** |
| * A label or domain name contains disallowed characters. |
| * @stable ICU 4.6 |
| */ |
| UIDNA_ERROR_DISALLOWED=0x80, |
| /** |
| * 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=0x100, |
| /** |
| * 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=0x200, |
| /** |
| * 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=0x400, |
| /** |
| * A label does not meet the IDNA BiDi requirements (for right-to-left characters). |
| * @stable ICU 4.6 |
| */ |
| UIDNA_ERROR_BIDI=0x800, |
| /** |
| * A label does not meet the IDNA CONTEXTJ requirements. |
| * @stable ICU 4.6 |
| */ |
| UIDNA_ERROR_CONTEXTJ=0x1000, |
| #ifndef U_HIDE_DRAFT_API |
| /** |
| * 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) |
| * @draft ICU 49 |
| */ |
| UIDNA_ERROR_CONTEXTO_PUNCTUATION=0x2000, |
| /** |
| * A label does not meet the IDNA CONTEXTO requirements for digits. |
| * Arabic-Indic Digits (U+066x) must not be mixed with Extended Arabic-Indic Digits (U+06Fx). |
| * @draft ICU 49 |
| */ |
| UIDNA_ERROR_CONTEXTO_DIGITS=0x4000 |
| #endif /* U_HIDE_DRAFT_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. |
| * @stable ICU 2.6 |
| */ |
| U_STABLE 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. |
| * @stable ICU 2.6 |
| */ |
| U_STABLE 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. |
| * @stable ICU 2.6 |
| */ |
| U_STABLE 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. |
| * @stable ICU 2.6 |
| */ |
| U_STABLE 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 |
| * @stable ICU 2.6 |
| */ |
| U_STABLE int32_t U_EXPORT2 |
| uidna_compare( const UChar *s1, int32_t length1, |
| const UChar *s2, int32_t length2, |
| int32_t options, |
| UErrorCode* status); |
| |
| #endif /* #if !UCONFIG_NO_IDNA */ |
| |
| #endif |
