/* ******************************************************************************* * * Copyright (C) 2005, International Business Machines * Corporation and others. All Rights Reserved. * ******************************************************************************* * file name: ucasemap.h * encoding: US-ASCII * tab size: 8 (not used) * indentation:4 * * created on: 2005may06 * created by: Markus W. Scherer * * Case mapping service object and functions using it. */ #ifndef __UCASEMAP_H__ #define __UCASEMAP_H__ #include "unicode/utypes.h" #include "unicode/ustring.h" /** * \file * \brief C API: Unicode case mapping functions using a UCaseMap service object. * * The service object takes care of memory allocations, data loading, and setup * for the attributes, as usual. * * Currently, the functionality provided here does not overlap with uchar.h * and ustring.h. * * ucasemap_utf8ToLower() and ucasemap_utf8ToUpper() operate directly on * UTF-8 strings. */ /** * UCaseMap is an opaque service object for newer ICU case mapping functions. * Older functions did not use a service object. * @draft ICU 3.4 */ struct UCaseMap; typedef struct UCaseMap UCaseMap; /**< C typedef for struct UCaseMap. @draft ICU 3.4 */ /** * Open a UCaseMap service object for a locale and a set of options. * The locale ID and options are preprocessed so that functions using the * service object need not process them in each call. * * @param locale ICU locale ID, used for language-dependent * upper-/lower-/title-casing according to the Unicode standard. * Usual semantics: ""=root, NULL=default locale, etc. * @param options Options bit set, used for case folding and string comparisons. * Same flags as for u_foldCase(), u_strFoldCase(), * u_strCaseCompare(), etc. * Use 0 or U_FOLD_CASE_DEFAULT for default behavior. * @param pErrorCode Must be a valid pointer to an error code value, * which must not indicate a failure before the function call. * @return Pointer to a UCaseMap service object, if successful. * * @draft ICU 3.4 */ U_DRAFT UCaseMap * U_EXPORT2 ucasemap_open(const char *locale, uint32_t options, UErrorCode *pErrorCode); /** * Close a UCaseMap service object. * @param csm Object to be closed. * @draft ICU 3.4 */ U_DRAFT void U_EXPORT2 ucasemap_close(UCaseMap *csm); /** * Get the locale ID that is used for language-dependent case mappings. * @param csm UCaseMap service object. * @return locale ID * @draft ICU 3.4 */ U_DRAFT const char * U_EXPORT2 ucasemap_getLocale(const UCaseMap *csm); /** * Get the options bit set that is used for case folding and string comparisons. * @param csm UCaseMap service object. * @return options bit set * @draft ICU 3.4 */ U_DRAFT uint32_t U_EXPORT2 ucasemap_getOptions(const UCaseMap *csm); /** * Set the locale ID that is used for language-dependent case mappings. * * @param csm UCaseMap service object. * @param locale Locale ID, see ucasemap_open(). * @param pErrorCode Must be a valid pointer to an error code value, * which must not indicate a failure before the function call. * * @see ucasemap_open * @draft ICU 3.4 */ U_DRAFT void U_EXPORT2 ucasemap_setLocale(UCaseMap *csm, const char *locale, UErrorCode *pErrorCode); /** * Set the options bit set that is used for case folding and string comparisons. * * @param csm UCaseMap service object. * @param options Options bit set, see ucasemap_open(). * @param pErrorCode Must be a valid pointer to an error code value, * which must not indicate a failure before the function call. * * @see ucasemap_open * @draft ICU 3.4 */ U_DRAFT void U_EXPORT2 ucasemap_setOptions(UCaseMap *csm, uint32_t options, UErrorCode *pErrorCode); /** * Lowercase the characters in a UTF-8 string. * Casing is locale-dependent and context-sensitive. * The result may be longer or shorter than the original. * The source string and the destination buffer must not overlap. * * @param csm UCaseMap service object. * @param dest A buffer for the result string. The result will be NUL-terminated if * the buffer is large enough. * The contents is undefined in case of failure. * @param destCapacity The size of the buffer (number of bytes). If it is 0, then * dest may be NULL and the function will only return the length of the result * without writing any of the result string. * @param src The original string * @param srcLength The length of the original string. If -1, then src must be NUL-terminated. * @param pErrorCode Must be a valid pointer to an error code value, * which must not indicate a failure before the function call. * @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. * * @see u_strToLower * @draft ICU 3.4 */ U_DRAFT int32_t U_EXPORT2 ucasemap_utf8ToLower(const UCaseMap *csm, char *dest, int32_t destCapacity, const char *src, int32_t srcLength, UErrorCode *pErrorCode); /** * Uppercase the characters in a UTF-8 string. * Casing is locale-dependent and context-sensitive. * The result may be longer or shorter than the original. * The source string and the destination buffer must not overlap. * * @param csm UCaseMap service object. * @param dest A buffer for the result string. The result will be NUL-terminated if * the buffer is large enough. * The contents is undefined in case of failure. * @param destCapacity The size of the buffer (number of bytes). If it is 0, then * dest may be NULL and the function will only return the length of the result * without writing any of the result string. * @param src The original string * @param srcLength The length of the original string. If -1, then src must be NUL-terminated. * @param pErrorCode Must be a valid pointer to an error code value, * which must not indicate a failure before the function call. * @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. * * @see u_strToUpper * @draft ICU 3.4 */ U_DRAFT int32_t U_EXPORT2 ucasemap_utf8ToUpper(const UCaseMap *csm, char *dest, int32_t destCapacity, const char *src, int32_t srcLength, UErrorCode *pErrorCode); #endif