Move ICU headers from public/{common,i18n} to source/{common,i18n}

public/common/unicode/idna.h

Index: public/common/unicode/idna.h
diff --git a/public/common/unicode/idna.h b/public/common/unicode/idna.h
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-/*
-*******************************************************************************
-*   Copyright (C) 2010, International Business Machines
-*   Corporation and others.  All Rights Reserved.
-*******************************************************************************
-*   file name:  idna.h
-*   encoding:   US-ASCII
-*   tab size:   8 (not used)
-*   indentation:4
-*
-*   created on: 2010mar05
-*   created by: Markus W. Scherer
-*/
-
-#ifndef __IDNA_H__
-#define __IDNA_H__
-
-/**
- * \file
- * \brief C++ API: Internationalizing Domain Names in Applications (IDNA)
- */
-
-#include "unicode/utypes.h"
-
-#if !UCONFIG_NO_IDNA
-
-#include "unicode/bytestream.h"
-#include "unicode/stringpiece.h"
-#include "unicode/uidna.h"
-#include "unicode/unistr.h"
-
-U_NAMESPACE_BEGIN
-
-class U_COMMON_API IDNAInfo;
-
-/**
- * Abstract base class for IDNA processing.
- * See http://www.unicode.org/reports/tr46/
- * and http://www.ietf.org/rfc/rfc3490.txt
- *
- * The IDNA class is not intended for public subclassing.
- *
- * This C++ API currently only implements UTS #46.
- * The uidna.h C API implements both UTS #46 (functions using UIDNA service object)
- * and IDNA2003 (functions that do not use a service object).
- * @draft ICU 4.6
- */
-class U_COMMON_API IDNA : public UObject {
-public:
-    /**
-     * Returns an IDNA instance which implements UTS #46.
-     * Returns an unmodifiable instance, owned by the caller.
-     * Cache it for multiple operations, and delete it when done.
-     * The instance is thread-safe, that is, it can be used concurrently.
-     *
-     * UTS #46 defines Unicode IDNA Compatibility Processing,
-     * updated to the latest version of Unicode and compatible with both
-     * IDNA2003 and IDNA2008.
-     *
-     * The worker functions use transitional processing, including deviation mappings,
-     * unless UIDNA_NONTRANSITIONAL_TO_ASCII or UIDNA_NONTRANSITIONAL_TO_UNICODE
-     * is used in which case the deviation characters are passed through without change.
-     *
-     * Disallowed characters are mapped to U+FFFD.
-     *
-     * For available options see the uidna.h header.
-     * Operations with the UTS #46 instance do not support the
-     * UIDNA_ALLOW_UNASSIGNED option.
-     *
-     * By default, the UTS #46 implementation allows all ASCII characters (as valid or mapped).
-     * When the UIDNA_USE_STD3_RULES option is used, ASCII characters other than
-     * letters, digits, hyphen (LDH) and dot/full stop are disallowed and mapped to U+FFFD.
-     *
-     * @param options Bit set to modify the processing and error checking.
-     *                See option bit set values in uidna.h.
-     * @param errorCode 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 IDNA instance, if successful
-     * @draft ICU 4.6
-     */
-    static IDNA *
-    createUTS46Instance(uint32_t options, UErrorCode &errorCode);
-
-    /**
-     * Converts a single domain name label into its ASCII form for DNS lookup.
-     * If any processing step fails, then info.hasErrors() will be TRUE 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 label Input domain name label
-     * @param dest Destination string object
-     * @param info Output container of IDNA processing details.
-     * @param errorCode 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 dest
-     * @draft ICU 4.6
-     */
-    virtual UnicodeString &
-    labelToASCII(const UnicodeString &label, UnicodeString &dest,
-                 IDNAInfo &info, UErrorCode &errorCode) const = 0;
-
-    /**
-     * Converts a single domain name label into its Unicode form for human-readable display.
-     * If any processing step fails, then info.hasErrors() will be TRUE.
-     * 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 label Input domain name label
-     * @param dest Destination string object
-     * @param info Output container of IDNA processing details.
-     * @param errorCode 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 dest
-     * @draft ICU 4.6
-     */
-    virtual UnicodeString &
-    labelToUnicode(const UnicodeString &label, UnicodeString &dest,
-                   IDNAInfo &info, UErrorCode &errorCode) const = 0;
-
-    /**
-     * Converts a whole domain name into its ASCII form for DNS lookup.
-     * If any processing step fails, then info.hasErrors() will be TRUE 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 name Input domain name
-     * @param dest Destination string object
-     * @param info Output container of IDNA processing details.
-     * @param errorCode 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 dest
-     * @draft ICU 4.6
-     */
-    virtual UnicodeString &
-    nameToASCII(const UnicodeString &name, UnicodeString &dest,
-                IDNAInfo &info, UErrorCode &errorCode) const = 0;
-
-    /**
-     * Converts a whole domain name into its Unicode form for human-readable display.
-     * If any processing step fails, then info.hasErrors() will be TRUE.
-     * 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 name Input domain name
-     * @param dest Destination string object
-     * @param info Output container of IDNA processing details.
-     * @param errorCode 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 dest
-     * @draft ICU 4.6
-     */
-    virtual UnicodeString &
-    nameToUnicode(const UnicodeString &name, UnicodeString &dest,
-                  IDNAInfo &info, UErrorCode &errorCode) const = 0;
-
-    // UTF-8 versions of the processing methods ---------------------------- ***
-
-    /**
-     * Converts a single domain name label into its ASCII form for DNS lookup.
-     * UTF-8 version of labelToASCII(), same behavior.
-     *
-     * @param label Input domain name label
-     * @param dest Destination byte sink; Flush()ed if successful
-     * @param info Output container of IDNA processing details.
-     * @param errorCode 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 dest
-     * @draft ICU 4.6
-     */
-    virtual void
-    labelToASCII_UTF8(const StringPiece &label, ByteSink &dest,
-                      IDNAInfo &info, UErrorCode &errorCode) const;
-
-    /**
-     * Converts a single domain name label into its Unicode form for human-readable display.
-     * UTF-8 version of labelToUnicode(), same behavior.
-     *
-     * @param label Input domain name label
-     * @param dest Destination byte sink; Flush()ed if successful
-     * @param info Output container of IDNA processing details.
-     * @param errorCode 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 dest
-     * @draft ICU 4.6
-     */
-    virtual void
-    labelToUnicodeUTF8(const StringPiece &label, ByteSink &dest,
-                       IDNAInfo &info, UErrorCode &errorCode) const;
-
-    /**
-     * Converts a whole domain name into its ASCII form for DNS lookup.
-     * UTF-8 version of nameToASCII(), same behavior.
-     *
-     * @param name Input domain name
-     * @param dest Destination byte sink; Flush()ed if successful
-     * @param info Output container of IDNA processing details.
-     * @param errorCode 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 dest
-     * @draft ICU 4.6
-     */
-    virtual void
-    nameToASCII_UTF8(const StringPiece &name, ByteSink &dest,
-                     IDNAInfo &info, UErrorCode &errorCode) const;
-
-    /**
-     * Converts a whole domain name into its Unicode form for human-readable display.
-     * UTF-8 version of nameToUnicode(), same behavior.
-     *
-     * @param name Input domain name
-     * @param dest Destination byte sink; Flush()ed if successful
-     * @param info Output container of IDNA processing details.
-     * @param errorCode 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 dest
-     * @draft ICU 4.6
-     */
-    virtual void
-    nameToUnicodeUTF8(const StringPiece &name, ByteSink &dest,
-                      IDNAInfo &info, UErrorCode &errorCode) const;
-
-private:
-    // No ICU "poor man's RTTI" for this class nor its subclasses.
-    virtual UClassID getDynamicClassID() const;
-};
-
-class UTS46;
-
-/**
- * Output container for IDNA processing errors.
- * The IDNAInfo class is not suitable for subclassing.
- * @draft ICU 4.6
- */
-class U_COMMON_API IDNAInfo : public UMemory {
-public:
-    /**
-     * Constructor for stack allocation.
-     * @draft ICU 4.6
-     */
-    IDNAInfo() : errors(0), labelErrors(0), isTransDiff(FALSE), isBiDi(FALSE), isOkBiDi(TRUE) {}
-    /**
-     * Were there IDNA processing errors?
-     * @return TRUE if there were processing errors
-     * @draft ICU 4.6
-     */
-    UBool hasErrors() const { return errors!=0; }
-    /**
-     * Returns a bit set indicating IDNA processing errors.
-     * See UIDNA_ERROR_... constants in uidna.h.
-     * @return bit set of processing errors
-     * @draft ICU 4.6
-     */
-    uint32_t getErrors() const { return errors; }
-    /**
-     * Returns TRUE if transitional and nontransitional processing produce different results.
-     * This is the case when the input label or domain name contains
-     * one or more deviation characters outside a Punycode label (see UTS #46).
-     * <ul>
-     * <li>With nontransitional processing, such characters are
-     * copied to the destination string.
-     * <li>With transitional processing, such characters are
-     * mapped (sharp s/sigma) or removed (joiner/nonjoiner).
-     * </ul>
-     * @return TRUE if transitional and nontransitional processing produce different results
-     * @draft ICU 4.6
-     */
-    UBool isTransitionalDifferent() const { return isTransDiff; }
-
-private:
-    friend class UTS46;
-
-    IDNAInfo(const IDNAInfo &other);  // no copying
-    IDNAInfo &operator=(const IDNAInfo &other);  // no copying
-
-    void reset() {
-        errors=labelErrors=0;
-        isTransDiff=FALSE;
-        isBiDi=FALSE;
-        isOkBiDi=TRUE;
-    }
-
-    uint32_t errors, labelErrors;
-    UBool isTransDiff;
-    UBool isBiDi;
-    UBool isOkBiDi;
-};
-
-U_NAMESPACE_END
-
-#endif  // UCONFIG_NO_IDNA
-#endif  // __IDNA_H__