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

public/common/unicode/unorm2.h

Index: public/common/unicode/unorm2.h
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-/*
-*******************************************************************************
-*
-*   Copyright (C) 2009-2010, International Business Machines
-*   Corporation and others.  All Rights Reserved.
-*
-*******************************************************************************
-*   file name:  unorm2.h
-*   encoding:   US-ASCII
-*   tab size:   8 (not used)
-*   indentation:4
-*
-*   created on: 2009dec15
-*   created by: Markus W. Scherer
-*/
-
-#ifndef __UNORM2_H__
-#define __UNORM2_H__
-
-/**
- * \file
- * \brief C API: New API for Unicode Normalization.
- *
- * Unicode normalization functionality for standard Unicode normalization or
- * for using custom mapping tables.
- * All instances of UNormalizer2 are unmodifiable/immutable.
- * Instances returned by unorm2_getInstance() are singletons that must not be deleted by the caller.
- * For more details see the Normalizer2 C++ class.
- */
-
-#include "unicode/utypes.h"
-#include "unicode/localpointer.h"
-#include "unicode/uset.h"
-
-/**
- * Constants for normalization modes.
- * For details about standard Unicode normalization forms
- * and about the algorithms which are also used with custom mapping tables
- * see http://www.unicode.org/unicode/reports/tr15/
- * @stable ICU 4.4
- */
-typedef enum {
-    /**
-     * Decomposition followed by composition.
-     * Same as standard NFC when using an "nfc" instance.
-     * Same as standard NFKC when using an "nfkc" instance.
-     * For details about standard Unicode normalization forms
-     * see http://www.unicode.org/unicode/reports/tr15/
-     * @stable ICU 4.4
-     */
-    UNORM2_COMPOSE,
-    /**
-     * Map, and reorder canonically.
-     * Same as standard NFD when using an "nfc" instance.
-     * Same as standard NFKD when using an "nfkc" instance.
-     * For details about standard Unicode normalization forms
-     * see http://www.unicode.org/unicode/reports/tr15/
-     * @stable ICU 4.4
-     */
-    UNORM2_DECOMPOSE,
-    /**
-     * "Fast C or D" form.
-     * If a string is in this form, then further decomposition <i>without reordering</i>
-     * would yield the same form as DECOMPOSE.
-     * Text in "Fast C or D" form can be processed efficiently with data tables
-     * that are "canonically closed", that is, that provide equivalent data for
-     * equivalent text, without having to be fully normalized.
-     * Not a standard Unicode normalization form.
-     * Not a unique form: Different FCD strings can be canonically equivalent.
-     * For details see http://www.unicode.org/notes/tn5/#FCD
-     * @stable ICU 4.4
-     */
-    UNORM2_FCD,
-    /**
-     * Compose only contiguously.
-     * Also known as "FCC" or "Fast C Contiguous".
-     * The result will often but not always be in NFC.
-     * The result will conform to FCD which is useful for processing.
-     * Not a standard Unicode normalization form.
-     * For details see http://www.unicode.org/notes/tn5/#FCC
-     * @stable ICU 4.4
-     */
-    UNORM2_COMPOSE_CONTIGUOUS
-} UNormalization2Mode;
-
-/**
- * Result values for normalization quick check functions.
- * For details see http://www.unicode.org/reports/tr15/#Detecting_Normalization_Forms
- * @stable ICU 2.0
- */
-typedef enum UNormalizationCheckResult {
-  /**
-   * The input string is not in the normalization form.
-   * @stable ICU 2.0
-   */
-  UNORM_NO,
-  /**
-   * The input string is in the normalization form.
-   * @stable ICU 2.0
-   */
-  UNORM_YES,
-  /**
-   * The input string may or may not be in the normalization form.
-   * This value is only returned for composition forms like NFC and FCC,
-   * when a backward-combining character is found for which the surrounding text
-   * would have to be analyzed further.
-   * @stable ICU 2.0
-   */
-  UNORM_MAYBE
-} UNormalizationCheckResult;
-
-/**
- * Opaque C service object type for the new normalization API.
- * @stable ICU 4.4
- */
-struct UNormalizer2;
-typedef struct UNormalizer2 UNormalizer2;  /**< C typedef for struct UNormalizer2. @stable ICU 4.4 */
-
-#if !UCONFIG_NO_NORMALIZATION
-
-/**
- * Returns a UNormalizer2 instance which uses the specified data file
- * (packageName/name similar to ucnv_openPackage() and ures_open()/ResourceBundle)
- * and which composes or decomposes text according to the specified mode.
- * Returns an unmodifiable singleton instance. Do not delete it.
- *
- * Use packageName=NULL for data files that are part of ICU's own data.
- * Use name="nfc" and UNORM2_COMPOSE/UNORM2_DECOMPOSE for Unicode standard NFC/NFD.
- * Use name="nfkc" and UNORM2_COMPOSE/UNORM2_DECOMPOSE for Unicode standard NFKC/NFKD.
- * Use name="nfkc_cf" and UNORM2_COMPOSE for Unicode standard NFKC_CF=NFKC_Casefold.
- *
- * @param packageName NULL for ICU built-in data, otherwise application data package name
- * @param name "nfc" or "nfkc" or "nfkc_cf" or name of custom data file
- * @param mode normalization mode (compose or decompose etc.)
- * @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 requested UNormalizer2, if successful
- * @stable ICU 4.4
- */
-U_STABLE const UNormalizer2 * U_EXPORT2
-unorm2_getInstance(const char *packageName,
-                   const char *name,
-                   UNormalization2Mode mode,
-                   UErrorCode *pErrorCode);
-
-/**
- * Constructs a filtered normalizer wrapping any UNormalizer2 instance
- * and a filter set.
- * Both are aliased and must not be modified or deleted while this object
- * is used.
- * The filter set should be frozen; otherwise the performance will suffer greatly.
- * @param norm2 wrapped UNormalizer2 instance
- * @param filterSet USet which determines the characters to be normalized
- * @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 requested UNormalizer2, if successful
- * @stable ICU 4.4
- */
-U_STABLE UNormalizer2 * U_EXPORT2
-unorm2_openFiltered(const UNormalizer2 *norm2, const USet *filterSet, UErrorCode *pErrorCode);
-
-/**
- * Closes a UNormalizer2 instance from unorm2_openFiltered().
- * Do not close instances from unorm2_getInstance()!
- * @param norm2 UNormalizer2 instance to be closed
- * @stable ICU 4.4
- */
-U_STABLE void U_EXPORT2
-unorm2_close(UNormalizer2 *norm2);
-
-#if U_SHOW_CPLUSPLUS_API
-
-U_NAMESPACE_BEGIN
-
-/**
- * \class LocalUNormalizer2Pointer
- * "Smart pointer" class, closes a UNormalizer2 via unorm2_close().
- * For most methods see the LocalPointerBase base class.
- *
- * @see LocalPointerBase
- * @see LocalPointer
- * @stable ICU 4.4
- */
-U_DEFINE_LOCAL_OPEN_POINTER(LocalUNormalizer2Pointer, UNormalizer2, unorm2_close);
-
-U_NAMESPACE_END
-
-#endif
-
-/**
- * Writes the normalized form of the source string to the destination string
- * (replacing its contents) and returns the length of the destination string.
- * The source and destination strings must be different buffers.
- * @param norm2 UNormalizer2 instance
- * @param src source string
- * @param length length of the source string, or -1 if NUL-terminated
- * @param dest destination string; its contents is replaced with normalized src
- * @param capacity number of UChars that can be written to dest
- * @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 dest
- * @stable ICU 4.4
- */
-U_STABLE int32_t U_EXPORT2
-unorm2_normalize(const UNormalizer2 *norm2,
-                 const UChar *src, int32_t length,
-                 UChar *dest, int32_t capacity,
-                 UErrorCode *pErrorCode);
-/**
- * Appends the normalized form of the second string to the first string
- * (merging them at the boundary) and returns the length of the first string.
- * The result is normalized if the first string was normalized.
- * The first and second strings must be different buffers.
- * @param norm2 UNormalizer2 instance
- * @param first string, should be normalized
- * @param firstLength length of the first string, or -1 if NUL-terminated
- * @param firstCapacity number of UChars that can be written to first
- * @param second string, will be normalized
- * @param secondLength length of the source string, or -1 if NUL-terminated
- * @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 first
- * @stable ICU 4.4
- */
-U_STABLE int32_t U_EXPORT2
-unorm2_normalizeSecondAndAppend(const UNormalizer2 *norm2,
-                                UChar *first, int32_t firstLength, int32_t firstCapacity,
-                                const UChar *second, int32_t secondLength,
-                                UErrorCode *pErrorCode);
-/**
- * Appends the second string to the first string
- * (merging them at the boundary) and returns the length of the first string.
- * The result is normalized if both the strings were normalized.
- * The first and second strings must be different buffers.
- * @param norm2 UNormalizer2 instance
- * @param first string, should be normalized
- * @param firstLength length of the first string, or -1 if NUL-terminated
- * @param firstCapacity number of UChars that can be written to first
- * @param second string, should be normalized
- * @param secondLength length of the source string, or -1 if NUL-terminated
- * @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 first
- * @stable ICU 4.4
- */
-U_STABLE int32_t U_EXPORT2
-unorm2_append(const UNormalizer2 *norm2,
-              UChar *first, int32_t firstLength, int32_t firstCapacity,
-              const UChar *second, int32_t secondLength,
-              UErrorCode *pErrorCode);
-
-/**
- * Gets the decomposition mapping of c. Equivalent to unorm2_normalize(string(c))
- * on a UNORM2_DECOMPOSE UNormalizer2 instance, but much faster.
- * This function is independent of the mode of the UNormalizer2.
- * @param norm2 UNormalizer2 instance
- * @param c code point
- * @param decomposition String buffer which will be set to c's
- *                      decomposition mapping, if there is one.
- * @param capacity number of UChars that can be written to decomposition
- * @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 non-negative length of c's decomposition, if there is one; otherwise a negative value
- * @draft ICU 4.6
- */
-U_DRAFT int32_t U_EXPORT2
-unorm2_getDecomposition(const UNormalizer2 *norm2,
-                        UChar32 c, UChar *decomposition, int32_t capacity,
-                        UErrorCode *pErrorCode);
-
-/**
- * Tests if the string is normalized.
- * Internally, in cases where the quickCheck() method would return "maybe"
- * (which is only possible for the two COMPOSE modes) this method
- * resolves to "yes" or "no" to provide a definitive result,
- * at the cost of doing more work in those cases.
- * @param norm2 UNormalizer2 instance
- * @param s input string
- * @param length length of the string, or -1 if NUL-terminated
- * @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 TRUE if s is normalized
- * @stable ICU 4.4
- */
-U_STABLE UBool U_EXPORT2
-unorm2_isNormalized(const UNormalizer2 *norm2,
-                    const UChar *s, int32_t length,
-                    UErrorCode *pErrorCode);
-
-/**
- * Tests if the string is normalized.
- * For the two COMPOSE modes, the result could be "maybe" in cases that
- * would take a little more work to resolve definitively.
- * Use spanQuickCheckYes() and normalizeSecondAndAppend() for a faster
- * combination of quick check + normalization, to avoid
- * re-checking the "yes" prefix.
- * @param norm2 UNormalizer2 instance
- * @param s input string
- * @param length length of the string, or -1 if NUL-terminated
- * @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 UNormalizationCheckResult
- * @stable ICU 4.4
- */
-U_STABLE UNormalizationCheckResult U_EXPORT2
-unorm2_quickCheck(const UNormalizer2 *norm2,
-                  const UChar *s, int32_t length,
-                  UErrorCode *pErrorCode);
-
-/**
- * Returns the end of the normalized substring of the input string.
- * In other words, with <code>end=spanQuickCheckYes(s, ec);</code>
- * the substring <code>UnicodeString(s, 0, end)</code>
- * will pass the quick check with a "yes" result.
- *
- * The returned end index is usually one or more characters before the
- * "no" or "maybe" character: The end index is at a normalization boundary.
- * (See the class documentation for more about normalization boundaries.)
- *
- * When the goal is a normalized string and most input strings are expected
- * to be normalized already, then call this method,
- * and if it returns a prefix shorter than the input string,
- * copy that prefix and use normalizeSecondAndAppend() for the remainder.
- * @param norm2 UNormalizer2 instance
- * @param s input string
- * @param length length of the string, or -1 if NUL-terminated
- * @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 "yes" span end index
- * @stable ICU 4.4
- */
-U_STABLE int32_t U_EXPORT2
-unorm2_spanQuickCheckYes(const UNormalizer2 *norm2,
-                         const UChar *s, int32_t length,
-                         UErrorCode *pErrorCode);
-
-/**
- * Tests if the character always has a normalization boundary before it,
- * regardless of context.
- * For details see the Normalizer2 base class documentation.
- * @param norm2 UNormalizer2 instance
- * @param c character to test
- * @return TRUE if c has a normalization boundary before it
- * @stable ICU 4.4
- */
-U_STABLE UBool U_EXPORT2
-unorm2_hasBoundaryBefore(const UNormalizer2 *norm2, UChar32 c);
-
-/**
- * Tests if the character always has a normalization boundary after it,
- * regardless of context.
- * For details see the Normalizer2 base class documentation.
- * @param norm2 UNormalizer2 instance
- * @param c character to test
- * @return TRUE if c has a normalization boundary after it
- * @stable ICU 4.4
- */
-U_STABLE UBool U_EXPORT2
-unorm2_hasBoundaryAfter(const UNormalizer2 *norm2, UChar32 c);
-
-/**
- * Tests if the character is normalization-inert.
- * For details see the Normalizer2 base class documentation.
- * @param norm2 UNormalizer2 instance
- * @param c character to test
- * @return TRUE if c is normalization-inert
- * @stable ICU 4.4
- */
-U_STABLE UBool U_EXPORT2
-unorm2_isInert(const UNormalizer2 *norm2, UChar32 c);
-
-#endif  /* !UCONFIG_NO_NORMALIZATION */
-#endif  /* __UNORM2_H__ */