--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/webengine/osswebengine/WebKit/icu/unicode/uidna.h Mon Mar 30 12:54:55 2009 +0300
@@ -0,0 +1,310 @@
+/*
+ *******************************************************************************
+ *
+ * Copyright (C) 2003-2004, 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/parseerr.h"
+
+/**
+ *\file
+ * 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 labels
+ * containing non-ASCII code points are required to be processed by
+ * ToASCII operation before passing it to resolver libraries. Domain names
+ * that are obtained from resolver libraries are required to be processed by
+ * 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).
+ *
+ */
+
+#ifndef U_HIDE_DRAFT_API
+
+/**
+ * Option to prohibit processing of unassigned codepoints in the input and
+ * do not check if the input conforms to STD-3 ASCII rules.
+ *
+ * @see uidna_toASCII uidna_toUnicode
+ * @stable ICU 2.6
+ */
+#define UIDNA_DEFAULT 0x0000
+/**
+ * Option to allow processing of unassigned codepoints in the input
+ *
+ * @see uidna_toASCII uidna_toUnicode
+ * @stable ICU 2.6
+ */
+#define UIDNA_ALLOW_UNASSIGNED 0x0001
+/**
+ * Option to check if input conforms to STD-3 ASCII rules
+ *
+ * @see uidna_toASCII uidna_toUnicode
+ * @stable ICU 2.6
+ */
+#define UIDNA_USE_STD3_RULES 0x0002
+
+#endif /*U_HIDE_DRAFT_API*/
+
+/**
+ * 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".
+ *
+ *
+ * @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 Number of ASCII characters converted.
+ * @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);
+
+
+/**
+ * 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 Number of Unicode characters converted.
+ * @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);
+
+
+/**
+ * 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 Number of ASCII characters converted.
+ * @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);
+
+/**
+ * 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 Number of ASCII characters converted.
+ * @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);
+
+/**
+ * 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