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These files are Copyright 2007 Nuance Communications, but released under

the Apache2 License.

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/*

 * Copyright (C) 2005 The Android Open Source Project

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 *      http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

//

// Handy utility functions and portability code.  This file includes all

// of the generally-useful headers in the "utils" directory.

//

#ifndef _LIBS_UTILS_H

#define _LIBS_UTILS_H

#include <utils/ported.h>

#include <utils/Log.h>

#include <utils/threads.h>

#include <utils/Timers.h>

#include <utils/List.h>

#include <utils/string_array.h>

#include <utils/misc.h>

#include <utils/Errors.h>

#endif // _LIBS_UTILS_H

/*

 * Copyright (C) 2006 The Android Open Source Project

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 *      http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

//

#ifndef ANDROID_UNICODE_H

#define ANDROID_UNICODE_H

#include <stdint.h>

#include <sys/types.h>

#define REPLACEMENT_CHAR (0xFFFD)

// this part of code is copied from umachine.h under ICU

/**

 * Define UChar32 as a type for single Unicode code points.

 * UChar32 is a signed 32-bit integer (same as int32_t).

 *

 * The Unicode code point range is 0..0x10ffff.

 * All other values (negative or >=0x110000) are illegal as Unicode code points.

 * They may be used as sentinel values to indicate "done", "error"

 * or similar non-code point conditions.

 *

 * @stable ICU 2.4

 */

typedef int32_t UChar32;

namespace android {

    class Encoding;

    /**

     * \class Unicode

     *

     * Helper class for getting properties of Unicode characters. Characters

     * can have one of the types listed in CharType and each character can have the

     * directionality of Direction.

     */

    class Unicode

    {

    public:

        /**

         * Directions specified in the Unicode standard. These directions map directly

         * to java.lang.Character.

         */

        enum Direction {

            DIRECTIONALITY_UNDEFINED = -1,

            DIRECTIONALITY_LEFT_TO_RIGHT,

            DIRECTIONALITY_RIGHT_TO_LEFT,

            DIRECTIONALITY_RIGHT_TO_LEFT_ARABIC,

            DIRECTIONALITY_EUROPEAN_NUMBER,

            DIRECTIONALITY_EUROPEAN_NUMBER_SEPARATOR,

            DIRECTIONALITY_EUROPEAN_NUMBER_TERMINATOR,

            DIRECTIONALITY_ARABIC_NUMBER,

            DIRECTIONALITY_COMMON_NUMBER_SEPARATOR,

            DIRECTIONALITY_NONSPACING_MARK,

            DIRECTIONALITY_BOUNDARY_NEUTRAL,

            DIRECTIONALITY_PARAGRAPH_SEPARATOR,

            DIRECTIONALITY_SEGMENT_SEPARATOR,

            DIRECTIONALITY_WHITESPACE,

            DIRECTIONALITY_OTHER_NEUTRALS,

            DIRECTIONALITY_LEFT_TO_RIGHT_EMBEDDING,

            DIRECTIONALITY_LEFT_TO_RIGHT_OVERRIDE,

            DIRECTIONALITY_RIGHT_TO_LEFT_EMBEDDING,

            DIRECTIONALITY_RIGHT_TO_LEFT_OVERRIDE,

            DIRECTIONALITY_POP_DIRECTIONAL_FORMAT

        };

        /**

         * Character types as specified in the Unicode standard. These map directly to

         * java.lang.Character.

         */

        enum CharType {

            CHARTYPE_UNASSIGNED = 0,

            CHARTYPE_UPPERCASE_LETTER,

            CHARTYPE_LOWERCASE_LETTER,

            CHARTYPE_TITLECASE_LETTER,

            CHARTYPE_MODIFIER_LETTER,

            CHARTYPE_OTHER_LETTER,

            CHARTYPE_NON_SPACING_MARK,

            CHARTYPE_ENCLOSING_MARK,

            CHARTYPE_COMBINING_SPACING_MARK,

            CHARTYPE_DECIMAL_DIGIT_NUMBER,

            CHARTYPE_LETTER_NUMBER,

            CHARTYPE_OTHER_NUMBER,

            CHARTYPE_SPACE_SEPARATOR,

            CHARTYPE_LINE_SEPARATOR,

            CHARTYPE_PARAGRAPH_SEPARATOR,

            CHARTYPE_CONTROL,

            CHARTYPE_FORMAT,

            CHARTYPE_MISSING_VALUE_FOR_JAVA,    /* This is the mysterious missing 17 value from the java constants */

            CHARTYPE_PRIVATE_USE,

            CHARTYPE_SURROGATE,

            CHARTYPE_DASH_PUNCTUATION,

            CHARTYPE_START_PUNCTUATION,

            CHARTYPE_END_PUNCTUATION,

            CHARTYPE_CONNECTOR_PUNCTUATION,

            CHARTYPE_OTHER_PUNCTUATION,

            CHARTYPE_MATH_SYMBOL,

            CHARTYPE_CURRENCY_SYMBOL,

            CHARTYPE_MODIFIER_SYMBOL,

            CHARTYPE_OTHER_SYMBOL,

            CHARTYPE_INITIAL_QUOTE_PUNCTUATION,

            CHARTYPE_FINAL_QUOTE_PUNCTUATION

        };

        /**

         * Decomposition types as described by the unicode standard. These values map to

         * the same values in uchar.h in ICU.

         */

        enum DecompositionType {

            DECOMPOSITION_NONE = 0,

            DECOMPOSITION_CANONICAL,

            DECOMPOSITION_COMPAT,

            DECOMPOSITION_CIRCLE,

            DECOMPOSITION_FINAL,

            DECOMPOSITION_FONT,

            DECOMPOSITION_FRACTION,

            DECOMPOSITION_INITIAL,

            DECOMPOSITION_ISOLATED,

            DECOMPOSITION_MEDIAL,

            DECOMPOSITION_NARROW,

            DECOMPOSITION_NOBREAK,

            DECOMPOSITION_SMALL,

            DECOMPOSITION_SQUARE,

            DECOMPOSITION_SUB,

            DECOMPOSITION_SUPER,

            DECOMPOSITION_VERTICAL,

            DECOMPOSITION_WIDE

        };

        /**

         * Returns the packed data for java calls

         * @param c The unicode character.

         * @return The packed data for the character.

         *

         * Copied from java.lang.Character implementation:

         * 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

         * F E D C B A 9 8 7 6 5 4 3 2 1 0 F E D C B A 9 8 7 6 5 4 3 2 1 0

         * 

         *                              31 types                 ---------

         *                   18 directionalities       ---------

         *                   2 mirroreds             -

         *                               -----------      56  toupper diffs

         *                   -----------                  48  tolower diffs

         *               ---                              4 totitlecase diffs

         * -------------                                 84 numeric values

         *     ---------                                 24 mirror char diffs

         */

        static uint32_t getPackedData(UChar32 c);

        /**

         * Get the Character type.

         * @param c The unicode character.

         * @return The character's type or CHARTYPE_UNASSIGNED if the character is invalid

         *         or has an unassigned class.

         */

        static CharType getType(UChar32 c);    

        /**

         * Get the Character's decomposition type.

         * @param c The unicode character.

         * @return The character's decomposition type or DECOMPOSITION_NONE is there 

         *         is no decomposition.

         */

        static DecompositionType getDecompositionType(UChar32 c);

        /**

         * Returns the digit value of a character or -1 if the character

         * is not within the specified radix.

         *

         * The digit value is computed for integer characters and letters

         * within the given radix. This function does not handle Roman Numerals,

         * fractions, or any other characters that may represent numbers.

         * 

         * @param c The unicode character

         * @param radix The intended radix.

         * @return The digit value or -1 if there is no digit value or if the value is outside the radix.

         */

        static int getDigitValue(UChar32 c, int radix = 10);

        /**

         * Return the numeric value of a character

         *

         * @param c The unicode character.

         * @return The numeric value of the character. -1 if the character has no numeric value, 

         *         -2 if the character has a numeric value that is not representable by an integer.

         */

        static int getNumericValue(UChar32 c);

        /**

         * Convert the character to lowercase

         * @param c The unicode character.

         * @return The lowercase character equivalent of c. If c does not have a lowercase equivalent,

         *         the original character is returned.

         */

        static UChar32 toLower(UChar32 c);

        /**

         * Convert the character to uppercase

         * @param c The unicode character.

         * @return The uppercase character equivalent of c. If c does not have an uppercase equivalent,

         *         the original character is returned.

         */

        static UChar32 toUpper(UChar32 c);

        /**

         * Get the directionality of the character.

         * @param c The unicode character.

         * @return The direction of the character or DIRECTIONALITY_UNDEFINED.

         */

        static Direction getDirectionality(UChar32 c);

        /**

         * Check if the character is a mirrored character. This means that the character

         * has an equivalent character that is the mirror image of itself.

         * @param c The unicode character.

         * @return True iff c has a mirror equivalent.

         */

        static bool isMirrored(UChar32 c);

        /**

         * Return the mirror of the given character.

         * @param c The unicode character.

         * @return The mirror equivalent of c. If c does not have a mirror equivalent,

         *         the original character is returned.

         * @see isMirrored

         */

        static UChar32 toMirror(UChar32 c);

        /**

         * Convert the character to title case.

         * @param c The unicode character.

         * @return The titlecase equivalent of c. If c does not have a titlecase equivalent,

         *         the original character is returned.

         */

        static UChar32 toTitle(UChar32 c);

   };

}

#endif