/** @file * innotek Portable Runtime - String Manipluation. */ /* * Copyright (C) 2006-2007 innotek GmbH * * This file is part of VirtualBox Open Source Edition (OSE), as * available from http://www.virtualbox.org. This file is free software; * you can redistribute it and/or modify it under the terms of the GNU * General Public License (GPL) as published by the Free Software * Foundation, in version 2 as it comes in the "COPYING" file of the * VirtualBox OSE distribution. VirtualBox OSE is distributed in the * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind. * * The contents of this file may alternatively be used under the terms * of the Common Development and Distribution License Version 1.0 * (CDDL) only, as it comes in the "COPYING.CDDL" file of the * VirtualBox OSE distribution, in which case the provisions of the * CDDL are applicable instead of those of the GPL. * * You may elect to license modified versions of this file under the * terms and conditions of either the GPL or the CDDL or both. */ #ifndef ___iprt_string_h #define ___iprt_string_h #include #include #include #include /* for VINF_SUCCESS */ #if defined(RT_OS_LINUX) && defined(__KERNEL__) # include #elif defined(RT_OS_FREEBSD) && defined(_KERNEL) /* * Kludge for the FreeBSD kernel: * Some of the string.h stuff clashes with sys/libkern.h, so just wrap * it up while including string.h to keep things quiet. It's nothing * important that's clashing, after all. */ # define strdup strdup_string_h # include # undef strdup #elif defined(RT_OS_SOLARIS) && defined(_KERNEL) /* * Same case as with FreeBSD kernel: * The string.h stuff clashes with sys/systm.h * ffs = find first set bit. */ # define ffs ffs_string_h # include # undef ffs # undef strpbrk #else # include #endif /* * Supply prototypes for standard string functions provided by * IPRT instead of the operating environment. */ #if defined(RT_OS_DARWIN) && defined(KERNEL) __BEGIN_DECLS void *memchr(const void *pv, int ch, size_t cb); char *strpbrk(const char *pszStr, const char *pszChars); __END_DECLS #endif /** @defgroup grp_rt_str RTStr - String Manipulation * Mostly UTF-8 related helpers where the standard string functions won't do. * @ingroup grp_rt * @{ */ __BEGIN_DECLS /** * The maximum string length. */ #define RTSTR_MAX (~(size_t)0) #ifdef IN_RING3 /** * Allocates tmp buffer, translates pszString from UTF8 to current codepage. * * @returns iprt status code. * @param ppszString Receives pointer of allocated native CP string. * The returned pointer must be freed using RTStrFree(). * @param pszString UTF-8 string to convert. */ RTR3DECL(int) RTStrUtf8ToCurrentCP(char **ppszString, const char *pszString); /** * Allocates tmp buffer, translates pszString from current codepage to UTF-8. * * @returns iprt status code. * @param ppszString Receives pointer of allocated UTF-8 string. * The returned pointer must be freed using RTStrFree(). * @param pszString Native string to convert. */ RTR3DECL(int) RTStrCurrentCPToUtf8(char **ppszString, const char *pszString); #endif /** * Free string allocated by any of the non-UCS-2 string functions. * * @returns iprt status code. * @param pszString Pointer to buffer with string to free. * NULL is accepted. */ RTDECL(void) RTStrFree(char *pszString); /** * Allocates a new copy of the given UTF-8 string. * * @returns Pointer to the allocated UTF-8 string. * @param pszString UTF-8 string to duplicate. */ RTDECL(char *) RTStrDup(const char *pszString); /** * Allocates a new copy of the given UTF-8 string. * * @returns iprt status code. * @param ppszString Receives pointer of the allocated UTF-8 string. * The returned pointer must be freed using RTStrFree(). * @param pszString UTF-8 string to duplicate. */ RTDECL(int) RTStrDupEx(char **ppszString, const char *pszString); /** * Gets the number of code points the string is made up of, excluding * the terminator. * * * @returns Number of code points (RTUNICP). * @returns 0 if the string was incorrectly encoded. * @param psz The string. */ RTDECL(size_t) RTStrUniLen(const char *psz); /** * Gets the number of code points the string is made up of, excluding * the terminator. * * This function will validate the string, and incorrectly encoded UTF-8 * strings will be rejected. * * @returns iprt status code. * @param psz The string. * @param cch The max string length. Use RTSTR_MAX to process the entire string. * @param pcuc Where to store the code point count. * This is undefined on failure. */ RTDECL(int) RTStrUniLenEx(const char *psz, size_t cch, size_t *pcuc); /** * Translate a UTF-8 string into an unicode string (i.e. RTUNICPs), allocating the string buffer. * * @returns iprt status code. * @param pszString UTF-8 string to convert. * @param ppUniString Receives pointer to the allocated unicode string. * The returned string must be freed using RTUniFree(). */ RTDECL(int) RTStrToUni(const char *pszString, PRTUNICP *ppUniString); /** * Translates pszString from UTF-8 to an array of code points, allocating the result * array if requested. * * @returns iprt status code. * @param pszString UTF-8 string to convert. * @param cchString The maximum size in chars (the type) to convert. The conversion stop * when it reaches cchString or the string terminator ('\\0'). * Use RTSTR_MAX to translate the entire string. * @param ppaCps If cCps is non-zero, this must either be pointing to pointer to * a buffer of the specified size, or pointer to a NULL pointer. * If *ppusz is NULL or cCps is zero a buffer of at least cCps items * will be allocated to hold the translated string. * If a buffer was requirest it must be freed using RTUtf16Free(). * @param cCps The number of code points in the unicode string. This includes the terminator. * @param pcCps Where to store the length of the translated string. (Optional) * This field will be updated even on failure, however the value is only * specified for the following two error codes. On VERR_BUFFER_OVERFLOW * and VERR_NO_STR_MEMORY it contains the required buffer space. */ RTDECL(int) RTStrToUniEx(const char *pszString, size_t cchString, PRTUNICP *ppaCps, size_t cCps, size_t *pcCps); /** * Calculates the length of the string in RTUTF16 items. * * This function will validate the string, and incorrectly encoded UTF-8 * strings will be rejected. The primary purpose of this function is to * help allocate buffers for RTStrToUtf16Ex of the correct size. For most * other puroses RTStrCalcUtf16LenEx() should be used. * * @returns Number of RTUTF16 items. * @returns 0 if the string was incorrectly encoded. * @param psz The string. */ RTDECL(size_t) RTStrCalcUtf16Len(const char *psz); /** * Calculates the length of the string in RTUTF16 items. * * This function will validate the string, and incorrectly encoded UTF-8 * strings will be rejected. * * @returns iprt status code. * @param psz The string. * @param cch The max string length. Use RTSTR_MAX to process the entire string. * @param pcwc Where to store the string length. Optional. * This is undefined on failure. */ RTDECL(int) RTStrCalcUtf16LenEx(const char *psz, size_t cch, size_t *pcwc); /** * Translate a UTF-8 string into a UTF-16 allocating the result buffer. * * @returns iprt status code. * @param pszString UTF-8 string to convert. * @param ppwszString Receives pointer to the allocated UTF-16 string. * The returned string must be freed using RTUtf16Free(). */ RTDECL(int) RTStrToUtf16(const char *pszString, PRTUTF16 *ppwszString); /** * Translates pszString from UTF-8 to UTF-16, allocating the result buffer if requested. * * @returns iprt status code. * @param pszString UTF-8 string to convert. * @param cchString The maximum size in chars (the type) to convert. The conversion stop * when it reaches cchString or the string terminator ('\\0'). * Use RTSTR_MAX to translate the entire string. * @param ppwsz If cwc is non-zero, this must either be pointing to pointer to * a buffer of the specified size, or pointer to a NULL pointer. * If *ppwsz is NULL or cwc is zero a buffer of at least cwc items * will be allocated to hold the translated string. * If a buffer was requirest it must be freed using RTUtf16Free(). * @param cwc The buffer size in RTUTF16s. This includes the terminator. * @param pcwc Where to store the length of the translated string. (Optional) * This field will be updated even on failure, however the value is only * specified for the following two error codes. On VERR_BUFFER_OVERFLOW * and VERR_NO_STR_MEMORY it contains the required buffer space. */ RTDECL(int) RTStrToUtf16Ex(const char *pszString, size_t cchString, PRTUTF16 *ppwsz, size_t cwc, size_t *pcwc); /** * Allocates tmp buffer, translates pszString from UTF8 to UCS-2. * * @returns iprt status code. * @param ppwszString Receives pointer of allocated UCS-2 string. * The returned pointer must be freed using RTStrUcs2Free(). * @param pszString UTF-8 string to convert. * @deprecated Use RTStrToUtf16(). */ DECLINLINE(int) RTStrUtf8ToUcs2(PRTUCS2 *ppwszString, const char *pszString) { return RTStrToUtf16(pszString, ppwszString); } /** * Translates pszString from UTF8 to backwater UCS-2, can allocate a temp buffer. * * @returns iprt status code. * @param ppwszString Receives pointer of allocated UCS-2 string. * The returned pointer must be freed using RTStrUcs2Free(). * @param cwc Length of target buffer in RTUCS2s including the trailing '\\0'. * If 0 a temporary buffer is allocated. * @param pszString UTF-8 string to convert. * @deprecated Use RTStrToUtf16Ex(). */ DECLINLINE(int) RTStrUtf8ToUcs2Ex(PRTUCS2 *ppwszString, unsigned cwc, const char *pszString) { return RTStrToUtf16Ex(pszString, RTSTR_MAX, ppwszString, cwc, NULL); } /** * Get the unicode code point at the given string position. * * @returns unicode code point. * @returns RTUNICP_INVALID if the encoding is invalid. * @param psz The string. */ RTDECL(RTUNICP) RTStrGetCpInternal(const char *psz); /** * Get the unicode code point at the given string position. * * @returns unicode code point. * @returns RTUNICP_INVALID if the encoding is invalid. * @param ppsz The string. * @param pCp Where to store the unicode code point. */ RTDECL(int) RTStrGetCpExInternal(const char **ppsz, PRTUNICP pCp); /** * Put the unicode code point at the given string position * and return the pointer to the char following it. * * This function will not consider anything at or following the the * buffer area pointed to by psz. It is therefore not suitable for * inserting code points into a string, only appending/overwriting. * * @returns pointer to the char following the written code point. * @param psz The string. * @param CodePoint The code point to write. * This sould not be RTUNICP_INVALID or any other charater * out of the UTF-8 range. * * @remark This is a worker function for RTStrPutCp(). * */ RTDECL(char *) RTStrPutCpInternal(char *psz, RTUNICP CodePoint); /** * Get the unicode code point at the given string position. * * @returns unicode code point. * @returns RTUNICP_INVALID if the encoding is invalid. * @param psz The string. * * @remark We optimize this operation by using an inline function for * the most frequent and simplest sequence, the rest is * handled by RTStrGetCpInternal(). */ DECLINLINE(RTUNICP) RTStrGetCp(const char *psz) { const unsigned char uch = *(const unsigned char *)psz; if (!(uch & RT_BIT(7))) return uch; return RTStrGetCpInternal(psz); } /** * Get the unicode code point at the given string position. * * @returns iprt status code. * @param ppsz Pointer to the string pointer. This will be updated to * point to the char following the current code point. * @param pCp Where to store the code point. * RTUNICP_INVALID is stored here on failure. * * @remark We optimize this operation by using an inline function for * the most frequent and simplest sequence, the rest is * handled by RTStrGetCpExInternal(). */ DECLINLINE(int) RTStrGetCpEx(const char **ppsz, PRTUNICP pCp) { const unsigned char uch = **(const unsigned char **)ppsz; if (!(uch & RT_BIT(7))) { (*ppsz)++; *pCp = uch; return VINF_SUCCESS; } return RTStrGetCpExInternal(ppsz, pCp); } /** * Put the unicode code point at the given string position * and return the pointer to the char following it. * * This function will not consider anything at or following the the * buffer area pointed to by psz. It is therefore not suitable for * inserting code points into a string, only appending/overwriting. * * @returns pointer to the char following the written code point. * @param psz The string. * @param CodePoint The code point to write. * This sould not be RTUNICP_INVALID or any other charater * out of the UTF-8 range. * * @remark We optimize this operation by using an inline function for * the most frequent and simplest sequence, the rest is * handled by RTStrPutCpInternal(). */ DECLINLINE(char *) RTStrPutCp(char *psz, RTUNICP CodePoint) { if (CodePoint < 0x80) { *psz++ = (unsigned char)CodePoint; return psz; } return RTStrPutCpInternal(psz, CodePoint); } /** * Skips ahead, past the current code point. * * @returns Pointer to the char after the current code point. * @param psz Pointer to the current code point. * @remark This will not move the next valid code point, only past the current one. */ DECLINLINE(char *) RTStrNextCp(const char *psz) { RTUNICP Cp; RTStrGetCpEx(&psz, &Cp); return (char *)psz; } /** * Skips back to the previous code point. * * @returns Pointer to the char before the current code point. * @returns pszStart on failure. * @param pszStart Pointer to the start of the string. * @param psz Pointer to the current code point. */ RTDECL(char *) RTStrPrevCp(const char *pszStart, const char *psz); #ifndef DECLARED_FNRTSTROUTPUT /* duplicated in iprt/log.h */ #define DECLARED_FNRTSTROUTPUT /** * Output callback. * * @returns number of bytes written. * @param pvArg User argument. * @param pachChars Pointer to an array of utf-8 characters. * @param cbChars Number of bytes in the character array pointed to by pachChars. */ typedef DECLCALLBACK(size_t) FNRTSTROUTPUT(void *pvArg, const char *pachChars, size_t cbChars); /** Pointer to callback function. */ typedef FNRTSTROUTPUT *PFNRTSTROUTPUT; #endif /** Format flag. * These are used by RTStrFormat extensions and RTStrFormatNumber, mind * that not all flags makes sense to both of the functions. * @{ */ #define RTSTR_F_CAPITAL 0x0001 #define RTSTR_F_LEFT 0x0002 #define RTSTR_F_ZEROPAD 0x0004 #define RTSTR_F_SPECIAL 0x0008 #define RTSTR_F_VALSIGNED 0x0010 #define RTSTR_F_PLUS 0x0020 #define RTSTR_F_BLANK 0x0040 #define RTSTR_F_WIDTH 0x0080 #define RTSTR_F_PRECISION 0x0100 #define RTSTR_F_BIT_MASK 0xf800 #define RTSTR_F_8BIT 0x0800 #define RTSTR_F_16BIT 0x1000 #define RTSTR_F_32BIT 0x2000 #define RTSTR_F_64BIT 0x4000 #define RTSTR_F_128BIT 0x8000 /** @} */ /** @def RTSTR_GET_BIT_FLAG * Gets the bit flag for the specified type. */ #define RTSTR_GET_BIT_FLAG(type) \ ( sizeof(type) == 32 ? RTSTR_F_32BIT \ : sizeof(type) == 64 ? RTSTR_F_64BIT \ : sizeof(type) == 16 ? RTSTR_F_16BIT \ : sizeof(type) == 8 ? RTSTR_F_8BIT \ : sizeof(type) == 128? RTSTR_F_128BIT \ : 0) /** * Callback to format non-standard format specifiers. * * @returns The number of bytes formatted. * @param pvArg Formatter argument. * @param pfnOutput Pointer to output function. * @param pvArgOutput Argument for the output function. * @param ppszFormat Pointer to the format string pointer. Advance this till the char * after the format specifier. * @param pArgs Pointer to the argument list. Use this to fetch the arguments. * @param cchWidth Format Width. -1 if not specified. * @param cchPrecision Format Precision. -1 if not specified. * @param fFlags Flags (RTSTR_NTFS_*). * @param chArgSize The argument size specifier, 'l' or 'L'. */ typedef DECLCALLBACK(size_t) FNSTRFORMAT(void *pvArg, PFNRTSTROUTPUT pfnOutput, void *pvArgOutput, const char **ppszFormat, va_list *pArgs, int cchWidth, int cchPrecision, unsigned fFlags, char chArgSize); /** Pointer to a FNSTRFORMAT() function. */ typedef FNSTRFORMAT *PFNSTRFORMAT; /** * Partial implementation of a printf like formatter. * It doesn't do everything correct, and there is no floating point support. * However, it supports custom formats by the means of a format callback. * * @returns number of bytes formatted. * @param pfnOutput Output worker. * Called in two ways. Normally with a string and its length. * For termination, it's called with NULL for string, 0 for length. * @param pvArgOutput Argument to the output worker. * @param pfnFormat Custom format worker. * @param pvArgFormat Argument to the format worker. * @param pszFormat Format string pointer. * @param args Argument list. */ RTDECL(size_t) RTStrFormatV(PFNRTSTROUTPUT pfnOutput, void *pvArgOutput, PFNSTRFORMAT pfnFormat, void *pvArgFormat, const char *pszFormat, va_list args); /** * Partial implementation of a printf like formatter. * It doesn't do everything correct, and there is no floating point support. * However, it supports custom formats by the means of a format callback. * * @returns number of bytes formatted. * @param pfnOutput Output worker. * Called in two ways. Normally with a string and its length. * For termination, it's called with NULL for string, 0 for length. * @param pvArgOutput Argument to the output worker. * @param pfnFormat Custom format worker. * @param pvArgFormat Argument to the format worker. * @param pszFormat Format string. * @param ... Argument list. */ RTDECL(size_t) RTStrFormat(PFNRTSTROUTPUT pfnOutput, void *pvArgOutput, PFNSTRFORMAT pfnFormat, void *pvArgFormat, const char *pszFormat, ...); /** * Formats an integer number according to the parameters. * * @returns Length of the formatted number. * @param psz Pointer to output string buffer of sufficient size. * @param u64Value Value to format. * @param uiBase Number representation base. * @param cchWidth Width. * @param cchPrecision Precision. * @param fFlags Flags (NTFS_*). */ RTDECL(int) RTStrFormatNumber(char *psz, uint64_t u64Value, unsigned int uiBase, signed int cchWidth, signed int cchPrecision, unsigned int fFlags); /** * String printf. * * @returns The length of the returned string (in pszBuffer). * @param pszBuffer Output buffer. * @param cchBuffer Size of the output buffer. * @param pszFormat The format string. * @param args The format argument. */ RTDECL(size_t) RTStrPrintfV(char *pszBuffer, size_t cchBuffer, const char *pszFormat, va_list args); /** * String printf. * * @returns The length of the returned string (in pszBuffer). * @param pszBuffer Output buffer. * @param cchBuffer Size of the output buffer. * @param pszFormat The format string. * @param ... The format argument. */ RTDECL(size_t) RTStrPrintf(char *pszBuffer, size_t cchBuffer, const char *pszFormat, ...); /** * String printf with custom formatting. * * @returns The length of the returned string (in pszBuffer). * @param pfnFormat Pointer to handler function for the custom formats. * @param pvArg Argument to the pfnFormat function. * @param pszBuffer Output buffer. * @param cchBuffer Size of the output buffer. * @param pszFormat The format string. * @param args The format argument. */ RTDECL(size_t) RTStrPrintfExV(PFNSTRFORMAT pfnFormat, void *pvArg, char *pszBuffer, size_t cchBuffer, const char *pszFormat, va_list args); /** * String printf with custom formatting. * * @returns The length of the returned string (in pszBuffer). * @param pfnFormat Pointer to handler function for the custom formats. * @param pvArg Argument to the pfnFormat function. * @param pszBuffer Output buffer. * @param cchBuffer Size of the output buffer. * @param pszFormat The format string. * @param ... The format argument. */ RTDECL(size_t) RTStrPrintfEx(PFNSTRFORMAT pfnFormat, void *pvArg, char *pszBuffer, size_t cchBuffer, const char *pszFormat, ...); /** * Allocating string printf. * * @returns The length of the string in the returned *ppszBuffer. * @returns -1 on failure. * @param ppszBuffer Where to store the pointer to the allocated output buffer. * The buffer should be freed using RTStrFree(). * On failure *ppszBuffer will be set to NULL. * @param pszFormat The format string. * @param args The format argument. */ RTDECL(int) RTStrAPrintfV(char **ppszBuffer, const char *pszFormat, va_list args); /** * Allocating string printf. * * @returns The length of the string in the returned *ppszBuffer. * @returns -1 on failure. * @param ppszBuffer Where to store the pointer to the allocated output buffer. * The buffer should be freed using RTStrFree(). * On failure *ppszBuffer will be set to NULL. * @param pszFormat The format string. * @param ... The format argument. */ RTDECL(int) RTStrAPrintf(char **ppszBuffer, const char *pszFormat, ...); /** * Strips blankspaces from both ends of the string. * * @returns Pointer to first non-blank char in the string. * @param psz The string to strip. */ RTDECL(char *) RTStrStrip(char *psz); /** * Strips blankspaces from the start of the string. * * @returns Pointer to first non-blank char in the string. * @param psz The string to strip. */ RTDECL(char *) RTStrStripL(const char *psz); /** * Strips blankspaces from the end of the string. * * @returns psz. * @param psz The string to strip. */ RTDECL(char *) RTStrStripR(char *psz); /** @defgroup rt_str_conv String To/From Number Conversions * @ingroup grp_rt_str * @{ */ /** * Converts a string representation of a number to a 64-bit unsigned number. * * @returns iprt status code. * Warnings are used to indicate convertion problems. * @retval VWRN_NUMBER_TOO_BIG * @retval VWRN_NEGATIVE_UNSIGNED * @retval VWRN_TRAILING_CHARS * @retval VWRN_TRAILING_SPACES * @retval VINF_SUCCESS * @retval VERR_NO_DIGITS * * @param pszValue Pointer to the string value. * @param ppszNext Where to store the pointer to the first char following the number. (Optional) * @param uBase The base of the representation used. * If the function will look for known prefixes before defaulting to 10. * @param pu64 Where to store the converted number. (optional) */ RTDECL(int) RTStrToUInt64Ex(const char *pszValue, char **ppszNext, unsigned uBase, uint64_t *pu64); /** * Converts a string representation of a number to a 64-bit unsigned number, * making sure the full string is converted. * * @returns iprt status code. * Warnings are used to indicate convertion problems. * @retval VWRN_NUMBER_TOO_BIG * @retval VWRN_NEGATIVE_UNSIGNED * @retval VINF_SUCCESS * @retval VERR_NO_DIGITS * @retval VERR_TRAILING_SPACES * @retval VERR_TRAILING_CHARS * * @param pszValue Pointer to the string value. * @param uBase The base of the representation used. * If the function will look for known prefixes before defaulting to 10. * @param pu64 Where to store the converted number. (optional) */ RTDECL(int) RTStrToUInt64Full(const char *pszValue, unsigned uBase, uint64_t *pu64); /** * Converts a string representation of a number to a 64-bit unsigned number. * The base is guessed. * * @returns 64-bit unsigned number on success. * @returns 0 on failure. * @param pszValue Pointer to the string value. */ RTDECL(uint64_t) RTStrToUInt64(const char *pszValue); /** * Converts a string representation of a number to a 32-bit unsigned number. * * @returns iprt status code. * Warnings are used to indicate conversion problems. * @retval VWRN_NUMBER_TOO_BIG * @retval VWRN_NEGATIVE_UNSIGNED * @retval VWRN_TRAILING_CHARS * @retval VWRN_TRAILING_SPACES * @retval VINF_SUCCESS * @retval VERR_NO_DIGITS * * @param pszValue Pointer to the string value. * @param ppszNext Where to store the pointer to the first char following the number. (Optional) * @param uBase The base of the representation used. * If 0 the function will look for known prefixes before defaulting to 10. * @param pu32 Where to store the converted number. (optional) */ RTDECL(int) RTStrToUInt32Ex(const char *pszValue, char **ppszNext, unsigned uBase, uint32_t *pu32); /** * Converts a string representation of a number to a 32-bit unsigned number, * making sure the full string is converted. * * @returns iprt status code. * Warnings are used to indicate convertion problems. * @retval VWRN_NUMBER_TOO_BIG * @retval VWRN_NEGATIVE_UNSIGNED * @retval VINF_SUCCESS * @retval VERR_NO_DIGITS * @retval VERR_TRAILING_SPACES * @retval VERR_TRAILING_CHARS * * @param pszValue Pointer to the string value. * @param uBase The base of the representation used. * If the function will look for known prefixes before defaulting to 10. * @param pu32 Where to store the converted number. (optional) */ RTDECL(int) RTStrToUInt32Full(const char *pszValue, unsigned uBase, uint32_t *pu32); /** * Converts a string representation of a number to a 64-bit unsigned number. * The base is guessed. * * @returns 32-bit unsigned number on success. * @returns 0 on failure. * @param pszValue Pointer to the string value. */ RTDECL(uint32_t) RTStrToUInt32(const char *pszValue); /** * Converts a string representation of a number to a 16-bit unsigned number. * * @returns iprt status code. * Warnings are used to indicate conversion problems. * @retval VWRN_NUMBER_TOO_BIG * @retval VWRN_NEGATIVE_UNSIGNED * @retval VWRN_TRAILING_CHARS * @retval VWRN_TRAILING_SPACES * @retval VINF_SUCCESS * @retval VERR_NO_DIGITS * * @param pszValue Pointer to the string value. * @param ppszNext Where to store the pointer to the first char following the number. (Optional) * @param uBase The base of the representation used. * If 0 the function will look for known prefixes before defaulting to 10. * @param pu16 Where to store the converted number. (optional) */ RTDECL(int) RTStrToUInt16Ex(const char *pszValue, char **ppszNext, unsigned uBase, uint16_t *pu16); /** * Converts a string representation of a number to a 16-bit unsigned number, * making sure the full string is converted. * * @returns iprt status code. * Warnings are used to indicate convertion problems. * @retval VWRN_NUMBER_TOO_BIG * @retval VWRN_NEGATIVE_UNSIGNED * @retval VINF_SUCCESS * @retval VERR_NO_DIGITS * @retval VERR_TRAILING_SPACES * @retval VERR_TRAILING_CHARS * * @param pszValue Pointer to the string value. * @param uBase The base of the representation used. * If the function will look for known prefixes before defaulting to 10. * @param pu16 Where to store the converted number. (optional) */ RTDECL(int) RTStrToUInt16Full(const char *pszValue, unsigned uBase, uint16_t *pu16); /** * Converts a string representation of a number to a 16-bit unsigned number. * The base is guessed. * * @returns 16-bit unsigned number on success. * @returns 0 on failure. * @param pszValue Pointer to the string value. */ RTDECL(uint16_t) RTStrToUInt16(const char *pszValue); /** * Converts a string representation of a number to a 8-bit unsigned number. * * @returns iprt status code. * Warnings are used to indicate conversion problems. * @retval VWRN_NUMBER_TOO_BIG * @retval VWRN_NEGATIVE_UNSIGNED * @retval VWRN_TRAILING_CHARS * @retval VWRN_TRAILING_SPACES * @retval VINF_SUCCESS * @retval VERR_NO_DIGITS * * @param pszValue Pointer to the string value. * @param ppszNext Where to store the pointer to the first char following the number. (Optional) * @param uBase The base of the representation used. * If 0 the function will look for known prefixes before defaulting to 10. * @param pu8 Where to store the converted number. (optional) */ RTDECL(int) RTStrToUInt8Ex(const char *pszValue, char **ppszNext, unsigned uBase, uint8_t *pu8); /** * Converts a string representation of a number to a 8-bit unsigned number, * making sure the full string is converted. * * @returns iprt status code. * Warnings are used to indicate convertion problems. * @retval VWRN_NUMBER_TOO_BIG * @retval VWRN_NEGATIVE_UNSIGNED * @retval VINF_SUCCESS * @retval VERR_NO_DIGITS * @retval VERR_TRAILING_SPACES * @retval VERR_TRAILING_CHARS * * @param pszValue Pointer to the string value. * @param uBase The base of the representation used. * If the function will look for known prefixes before defaulting to 10. * @param pu8 Where to store the converted number. (optional) */ RTDECL(int) RTStrToUInt8Full(const char *pszValue, unsigned uBase, uint8_t *pu8); /** * Converts a string representation of a number to a 8-bit unsigned number. * The base is guessed. * * @returns 8-bit unsigned number on success. * @returns 0 on failure. * @param pszValue Pointer to the string value. */ RTDECL(uint8_t) RTStrToUInt8(const char *pszValue); /** * Converts a string representation of a number to a 64-bit signed number. * * @returns iprt status code. * Warnings are used to indicate conversion problems. * @retval VWRN_NUMBER_TOO_BIG * @retval VWRN_TRAILING_CHARS * @retval VWRN_TRAILING_SPACES * @retval VINF_SUCCESS * @retval VERR_NO_DIGITS * * @param pszValue Pointer to the string value. * @param ppszNext Where to store the pointer to the first char following the number. (Optional) * @param uBase The base of the representation used. * If 0 the function will look for known prefixes before defaulting to 10. * @param pi64 Where to store the converted number. (optional) */ RTDECL(int) RTStrToInt64Ex(const char *pszValue, char **ppszNext, unsigned uBase, int64_t *pi64); /** * Converts a string representation of a number to a 64-bit signed number, * making sure the full string is converted. * * @returns iprt status code. * Warnings are used to indicate convertion problems. * @retval VWRN_NUMBER_TOO_BIG * @retval VINF_SUCCESS * @retval VERR_TRAILING_CHARS * @retval VERR_TRAILING_SPACES * @retval VERR_NO_DIGITS * * @param pszValue Pointer to the string value. * @param uBase The base of the representation used. * If the function will look for known prefixes before defaulting to 10. * @param pi64 Where to store the converted number. (optional) */ RTDECL(int) RTStrToInt64Full(const char *pszValue, unsigned uBase, int64_t *pi64); /** * Converts a string representation of a number to a 64-bit signed number. * The base is guessed. * * @returns 64-bit signed number on success. * @returns 0 on failure. * @param pszValue Pointer to the string value. */ RTDECL(int64_t) RTStrToInt64(const char *pszValue); /** * Converts a string representation of a number to a 32-bit signed number. * * @returns iprt status code. * Warnings are used to indicate conversion problems. * @retval VWRN_NUMBER_TOO_BIG * @retval VWRN_TRAILING_CHARS * @retval VWRN_TRAILING_SPACES * @retval VINF_SUCCESS * @retval VERR_NO_DIGITS * * @param pszValue Pointer to the string value. * @param ppszNext Where to store the pointer to the first char following the number. (Optional) * @param uBase The base of the representation used. * If 0 the function will look for known prefixes before defaulting to 10. * @param pi32 Where to store the converted number. (optional) */ RTDECL(int) RTStrToInt32Ex(const char *pszValue, char **ppszNext, unsigned uBase, int32_t *pi32); /** * Converts a string representation of a number to a 32-bit signed number, * making sure the full string is converted. * * @returns iprt status code. * Warnings are used to indicate convertion problems. * @retval VWRN_NUMBER_TOO_BIG * @retval VINF_SUCCESS * @retval VERR_TRAILING_CHARS * @retval VERR_TRAILING_SPACES * @retval VERR_NO_DIGITS * * @param pszValue Pointer to the string value. * @param uBase The base of the representation used. * If the function will look for known prefixes before defaulting to 10. * @param pi32 Where to store the converted number. (optional) */ RTDECL(int) RTStrToInt32Full(const char *pszValue, unsigned uBase, int32_t *pi32); /** * Converts a string representation of a number to a 32-bit signed number. * The base is guessed. * * @returns 32-bit signed number on success. * @returns 0 on failure. * @param pszValue Pointer to the string value. */ RTDECL(int32_t) RTStrToInt32(const char *pszValue); /** * Converts a string representation of a number to a 16-bit signed number. * * @returns iprt status code. * Warnings are used to indicate conversion problems. * @retval VWRN_NUMBER_TOO_BIG * @retval VWRN_TRAILING_CHARS * @retval VWRN_TRAILING_SPACES * @retval VINF_SUCCESS * @retval VERR_NO_DIGITS * * @param pszValue Pointer to the string value. * @param ppszNext Where to store the pointer to the first char following the number. (Optional) * @param uBase The base of the representation used. * If 0 the function will look for known prefixes before defaulting to 10. * @param pi16 Where to store the converted number. (optional) */ RTDECL(int) RTStrToInt16Ex(const char *pszValue, char **ppszNext, unsigned uBase, int16_t *pi16); /** * Converts a string representation of a number to a 16-bit signed number, * making sure the full string is converted. * * @returns iprt status code. * Warnings are used to indicate convertion problems. * @retval VWRN_NUMBER_TOO_BIG * @retval VINF_SUCCESS * @retval VERR_TRAILING_CHARS * @retval VERR_TRAILING_SPACES * @retval VERR_NO_DIGITS * * @param pszValue Pointer to the string value. * @param uBase The base of the representation used. * If the function will look for known prefixes before defaulting to 10. * @param pi16 Where to store the converted number. (optional) */ RTDECL(int) RTStrToInt16Full(const char *pszValue, unsigned uBase, int16_t *pi16); /** * Converts a string representation of a number to a 16-bit signed number. * The base is guessed. * * @returns 16-bit signed number on success. * @returns 0 on failure. * @param pszValue Pointer to the string value. */ RTDECL(int16_t) RTStrToInt16(const char *pszValue); /** * Converts a string representation of a number to a 8-bit signed number. * * @returns iprt status code. * Warnings are used to indicate conversion problems. * @retval VWRN_NUMBER_TOO_BIG * @retval VWRN_TRAILING_CHARS * @retval VWRN_TRAILING_SPACES * @retval VINF_SUCCESS * @retval VERR_NO_DIGITS * * @param pszValue Pointer to the string value. * @param ppszNext Where to store the pointer to the first char following the number. (Optional) * @param uBase The base of the representation used. * If 0 the function will look for known prefixes before defaulting to 10. * @param pi8 Where to store the converted number. (optional) */ RTDECL(int) RTStrToInt8Ex(const char *pszValue, char **ppszNext, unsigned uBase, int8_t *pi8); /** * Converts a string representation of a number to a 8-bit signed number, * making sure the full string is converted. * * @returns iprt status code. * Warnings are used to indicate convertion problems. * @retval VWRN_NUMBER_TOO_BIG * @retval VINF_SUCCESS * @retval VERR_TRAILING_CHARS * @retval VERR_TRAILING_SPACES * @retval VERR_NO_DIGITS * * @param pszValue Pointer to the string value. * @param uBase The base of the representation used. * If the function will look for known prefixes before defaulting to 10. * @param pi64 Where to store the converted number. (optional) */ RTDECL(int) RTStrToInt8Full(const char *pszValue, unsigned uBase, int8_t *pi8); /** * Converts a string representation of a number to a 8-bit signed number. * The base is guessed. * * @returns 8-bit signed number on success. * @returns 0 on failure. * @param pszValue Pointer to the string value. */ RTDECL(int8_t) RTStrToInt8(const char *pszValue); /** * Performs a case insensitive string compare between two UTF-8 strings. * * This is a simplified compare, as only the simplified lower/upper case folding * specified by the unicode specs are used. It does not consider character pairs * as they are used in some languages, just simple upper & lower case compares. * * @returns < 0 if the first string less than the second string. * @returns 0 if the first string identical to the second string. * @returns > 0 if the first string greater than the second string. * @param psz1 First UTF-8 string. * @param psz2 Second UTF-8 string. */ RTDECL(int) RTStrICmp(const char *psz1, const char *psz2); /** @} */ /** @defgroup rt_str_space Unique String Space * @ingroup grp_rt_str * @{ */ /** Pointer to a string name space container node core. */ typedef struct RTSTRSPACECORE *PRTSTRSPACECORE; /** Pointer to a pointer to a string name space container node core. */ typedef PRTSTRSPACECORE *PPRTSTRSPACECORE; /** * String name space container node core. */ typedef struct RTSTRSPACECORE { /** Hash key. Don't touch. */ uint32_t Key; /** Pointer to the left leaf node. Don't touch. */ PRTSTRSPACECORE pLeft; /** Pointer to the left rigth node. Don't touch. */ PRTSTRSPACECORE pRight; /** Pointer to the list of string with the same key. Don't touch. */ PRTSTRSPACECORE pList; /** Height of this tree: max(heigth(left), heigth(right)) + 1. Don't touch */ unsigned char uchHeight; /** The string length. Read only! */ size_t cchString; /** Pointer to the string. Read only! */ const char * pszString; } RTSTRSPACECORE; /** String space. (Initialize with NULL.) */ typedef PRTSTRSPACECORE RTSTRSPACE; /** Pointer to a string space. */ typedef PPRTSTRSPACECORE PRTSTRSPACE; /** * Inserts a string into a unique string space. * * @returns true on success. * @returns false if the string collieded with an existing string. * @param pStrSpace The space to insert it into. * @param pStr The string node. */ RTDECL(bool) RTStrSpaceInsert(PRTSTRSPACE pStrSpace, PRTSTRSPACECORE pStr); /** * Removes a string from a unique string space. * * @returns Pointer to the removed string node. * @returns NULL if the string was not found in the string space. * @param pStrSpace The space to insert it into. * @param pszString The string to remove. */ RTDECL(PRTSTRSPACECORE) RTStrSpaceRemove(PRTSTRSPACE pStrSpace, const char *pszString); /** * Gets a string from a unique string space. * * @returns Pointer to the string node. * @returns NULL if the string was not found in the string space. * @param pStrSpace The space to insert it into. * @param pszString The string to get. */ RTDECL(PRTSTRSPACECORE) RTStrSpaceGet(PRTSTRSPACE pStrSpace, const char *pszString); /** * Callback function for RTStrSpaceEnumerate() and RTStrSpaceDestroy(). * * @returns 0 on continue. * @returns Non-zero to aborts the operation. * @param pStr The string node * @param pvUser The user specified argument. */ typedef DECLCALLBACK(int) FNRTSTRSPACECALLBACK(PRTSTRSPACECORE pStr, void *pvUser); /** Pointer to callback function for RTStrSpaceEnumerate() and RTStrSpaceDestroy(). */ typedef FNRTSTRSPACECALLBACK *PFNRTSTRSPACECALLBACK; /** * Destroys the string space. * The caller supplies a callback which will be called for each of * the string nodes in for freeing their memory and other resources. * * @returns 0 or what ever non-zero return value pfnCallback returned * when aborting the destruction. * @param pStrSpace The space to insert it into. * @param pfnCallback The callback. * @param pvUser The user argument. */ RTDECL(int) RTStrSpaceDestroy(PRTSTRSPACE pStrSpace, PFNRTSTRSPACECALLBACK pfnCallback, void *pvUser); /** * Enumerates the string space. * The caller supplies a callback which will be called for each of * the string nodes. * * @returns 0 or what ever non-zero return value pfnCallback returned * when aborting the destruction. * @param pStrSpace The space to insert it into. * @param pfnCallback The callback. * @param pvUser The user argument. */ RTDECL(int) RTStrSpaceEnumerate(PRTSTRSPACE pStrSpace, PFNRTSTRSPACECALLBACK pfnCallback, void *pvUser); /** @} */ /** @defgroup rt_str_utf16 UTF-16 String Manipulation * @ingroup grp_rt_str * @{ */ /** * Free a UTF-16 string allocated by RTStrUtf8ToUtf16(), RTStrUtf8ToUtf16Ex(), * RTUtf16Dup() or RTUtf16DupEx(). * * @returns iprt status code. * @param pwszString The UTF-16 string to free. NULL is accepted. */ RTDECL(void) RTUtf16Free(PRTUTF16 pwszString); /** * Allocates a new copy of the specified UTF-16 string. * * @returns Pointer to the allocated string copy. Use RTUtf16Free() to free it. * @returns NULL when out of memory. * @param pwszString UTF-16 string to duplicate. * @remark This function will not make any attempt to validate the encoding. */ RTDECL(PRTUTF16) RTUtf16Dup(PCRTUTF16 pwszString); /** * Allocates a new copy of the specified UTF-16 string. * * @returns iprt status code. * @param ppwszString Receives pointer of the allocated UTF-16 string. * The returned pointer must be freed using RTUtf16Free(). * @param pwszString UTF-16 string to duplicate. * @param cwcExtra Number of extra RTUTF16 items to allocate. * @remark This function will not make any attempt to validate the encoding. */ RTDECL(int) RTUtf16DupEx(PRTUTF16 *ppwszString, PCRTUTF16 pwszString, size_t cwcExtra); /** * Returns the length of a UTF-16 string in UTF-16 characters * without trailing '\\0'. * * Surrogate pairs counts as two UTF-16 characters here. Use RTUtf16CpCnt() * to get the exact number of code points in the string. * * @returns The number of RTUTF16 items in the string. * @param pwszString Pointer the UTF-16 string. * @remark This function will not make any attempt to validate the encoding. */ RTDECL(size_t) RTUtf16Len(PCRTUTF16 pwszString); /** * Performs a case sensitive string compare between two UTF-16 strings. * * @returns < 0 if the first string less than the second string.s * @returns 0 if the first string identical to the second string. * @returns > 0 if the first string greater than the second string. * @param pwsz1 First UTF-16 string. * @param pwsz2 Second UTF-16 string. * @remark This function will not make any attempt to validate the encoding. */ RTDECL(int) RTUtf16Cmp(register PCRTUTF16 pwsz1, register PCRTUTF16 pwsz2); /** * Performs a case insensitive string compare between two UTF-16 strings. * * This is a simplified compare, as only the simplified lower/upper case folding * specified by the unicode specs are used. It does not consider character pairs * as they are used in some languages, just simple upper & lower case compares. * * @returns < 0 if the first string less than the second string. * @returns 0 if the first string identical to the second string. * @returns > 0 if the first string greater than the second string. * @param pwsz1 First UTF-16 string. * @param pwsz2 Second UTF-16 string. */ RTDECL(int) RTUtf16ICmp(PCRTUTF16 pwsz1, PCRTUTF16 pwsz2); /** * Performs a case insensitive string compare between two UTF-16 strings * using the current locale of the process (if applicable). * * This differs from RTUtf16ICmp() in that it will try, if a locale with the * required data is available, to do a correct case-insensitive compare. It * follows that it is more complex and thereby likely to be more expensive. * * @returns < 0 if the first string less than the second string. * @returns 0 if the first string identical to the second string. * @returns > 0 if the first string greater than the second string. * @param pwsz1 First UTF-16 string. * @param pwsz2 Second UTF-16 string. */ RTDECL(int) RTUtf16LocaleICmp(PCRTUTF16 pwsz1, PCRTUTF16 pwsz2); /** * Folds a UTF-16 string to lowercase. * * This is a very simple folding; is uses the simple lowercase * code point, it is not related to any locale just the most common * lowercase codepoint setup by the unicode specs, and it will not * create new surrogate pairs or remove existing ones. * * @returns Pointer to the passed in string. * @param pwsz The string to fold. */ RTDECL(PRTUTF16) RTUtf16ToLower(PRTUTF16 pwsz); /** * Folds a UTF-16 string to uppercase. * * This is a very simple folding; is uses the simple uppercase * code point, it is not related to any locale just the most common * uppercase codepoint setup by the unicode specs, and it will not * create new surrogate pairs or remove existing ones. * * @returns Pointer to the passed in string. * @param pwsz The string to fold. */ RTDECL(PRTUTF16) RTUtf16ToUpper(PRTUTF16 pwsz); /** * Translate a UTF-16 string into a UTF-8 allocating the result buffer. * * @returns iprt status code. * @param pwszString UTF-16 string to convert. * @param ppszString Receives pointer of allocated UTF-8 string. * The returned pointer must be freed using RTStrFree(). */ RTDECL(int) RTUtf16ToUtf8(PCRTUTF16 pwszString, char **ppszString); /** * Translates UTF-16 to UTF-8 using buffer provided by the caller or * a fittingly sized buffer allocated by the function. * * @returns iprt status code. * @param pwszString The UTF-16 string to convert. * @param cwcString The number of RTUTF16 items to translation from pwszString. * The translate will stop when reaching cwcString or the terminator ('\\0'). * Use RTSTR_MAX to translate the entire string. * @param ppsz If cch is non-zero, this must either be pointing to pointer to * a buffer of the specified size, or pointer to a NULL pointer. * If *ppsz is NULL or cch is zero a buffer of at least cch chars * will be allocated to hold the translated string. * If a buffer was requirest it must be freed using RTUtf16Free(). * @param cch The buffer size in chars (the type). This includes the terminator. * @param pcch Where to store the length of the translated string. (Optional) * This field will be updated even on failure, however the value is only * specified for the following two error codes. On VERR_BUFFER_OVERFLOW * and VERR_NO_STR_MEMORY it contains the required buffer space. */ RTDECL(int) RTUtf16ToUtf8Ex(PCRTUTF16 pwszString, size_t cwcString, char **ppsz, size_t cch, size_t *pcch); /** * Allocates tmp buffer, translates pwszString from UCS-2 to UTF8. * * @returns iprt status code. * @param ppszString Receives pointer of allocated UTF8 string. * The returned pointer must be freed using RTStrFree(). * @param pwszString UCS-2 string to convert. * @deprecated Use RTUtf16ToUtf8(). */ DECLINLINE(int) RTStrUcs2ToUtf8(char **ppszString, PCRTUCS2 pwszString) { return RTUtf16ToUtf8(pwszString, ppszString); } /** * Translates UCS-2 to UTF-8 using buffer provided by the caller or * a fittingly sized buffer allocated by the function. * * @returns iprt status code. * @param ppszString If cch is not zero, this points to the pointer to the * buffer where the converted string shall be resulted. * If cch is zero, this is where the pointer to the allocated * buffer with the converted string is stored. The allocated * buffer must be freed by using RTStrFree(). * @param cch Size of the passed in buffer (*ppszString). * If 0 a fittingly sized buffer is allocated. * @param pwszString UCS-2 string to convert. * @deprecated */ DECLINLINE(int) RTStrUcs2ToUtf8Ex(char **ppszString, size_t cch, PCRTUCS2 pwszString) { return RTUtf16ToUtf8Ex(pwszString, RTSTR_MAX, ppszString, cch, NULL); } /** * Free a UCS-2 string allocated by RTStrUtf8ToUcs2(). * * @returns iprt status code. * @param pwszString Pointer to buffer with unicode string to free. * NULL is accepted. * @deprecated */ DECLINLINE(void) RTStrUcs2Free(PRTUCS2 pwszString) { RTUtf16Free(pwszString); } /** * Allocates a new copy of the given UCS-2 string. * * @returns Pointer to the allocated string copy. Use RTStrUcs2Free() to free it. * @returns NULL when out of memory. * @param pwszString UCS-2 string to duplicate. * @deprecated */ DECLINLINE(PRTUCS2) RTStrUcs2Dup(PCRTUCS2 pwszString) { return RTUtf16Dup(pwszString); } /** * Allocates a new copy of the given UCS-2 string. * * @returns iprt status code. * @param ppwszString Receives pointer of the allocated UCS-2 string. * The returned pointer must be freed using RTStrUcs2Free(). * @param pwszString UCS-2 string to duplicate. * @deprecated */ DECLINLINE(int) RTStrUcs2DupEx(PRTUCS2 *ppwszString, PCRTUCS2 pwszString) { return RTUtf16DupEx(ppwszString, pwszString, 0); } /** * Returns the length of a UCS-2 string in UCS-2 characters * without trailing '\\0'. * * @returns Length of input string in UCS-2 characters. * @param pwszString Pointer the UCS-2 string. * @deprecated */ DECLINLINE(size_t) RTStrUcs2Len(PCRTUCS2 pwszString) { return RTUtf16Len(pwszString); } /** * Performs a case sensitive string compare between two UCS-2 strings. * * @returns < 0 if the first string less than the second string. * @returns 0 if the first string identical to the second string. * @returns > 0 if the first string greater than the second string. * @param pwsz1 First UCS-2 string. * @param pwsz2 Second UCS-2 string. * @deprecated */ DECLINLINE(int) RTStrUcs2Cmp(register PCRTUCS2 pwsz1, register PCRTUCS2 pwsz2) { return RTUtf16Cmp(pwsz1, pwsz2); } /** * Get the unicode code point at the given string position. * * @returns unicode code point. * @returns RTUNICP_INVALID if the encoding is invalid. * @param pwsz The string. * * @remark This is an internal worker for RTUtf16GetCp(). */ RTDECL(RTUNICP) RTUtf16GetCpInternal(PCRTUTF16 pwsz); /** * Get the unicode code point at the given string position. * * @returns iprt status code. * @param ppwsz Pointer to the string pointer. This will be updated to * point to the char following the current code point. * @param pCp Where to store the code point. * RTUNICP_INVALID is stored here on failure. * * @remark This is an internal worker for RTUtf16GetCpEx(). */ RTDECL(int) RTUtf16GetCpExInternal(PCRTUTF16 *ppwsz, PRTUNICP pCp); /** * Put the unicode code point at the given string position * and return the pointer to the char following it. * * This function will not consider anything at or following the the * buffer area pointed to by pwsz. It is therefore not suitable for * inserting code points into a string, only appending/overwriting. * * @returns pointer to the char following the written code point. * @param pwsz The string. * @param CodePoint The code point to write. * This sould not be RTUNICP_INVALID or any other charater * out of the UTF-16 range. * * @remark This is an internal worker for RTUtf16GetCpEx(). */ RTDECL(PRTUTF16) RTUtf16PutCpInternal(PRTUTF16 pwsz, RTUNICP CodePoint); /** * Get the unicode code point at the given string position. * * @returns unicode code point. * @returns RTUNICP_INVALID if the encoding is invalid. * @param pwsz The string. * * @remark We optimize this operation by using an inline function for * everything which isn't a surrogate pair or an endian indicator. */ DECLINLINE(RTUNICP) RTUtf16GetCp(PCRTUTF16 pwsz) { const RTUTF16 wc = *pwsz; if (wc < 0xd800 || (wc > 0xdfff && wc < 0xfffe)) return wc; return RTUtf16GetCpInternal(pwsz); } /** * Get the unicode code point at the given string position. * * @returns iprt status code. * @param ppwsz Pointer to the string pointer. This will be updated to * point to the char following the current code point. * @param pCp Where to store the code point. * RTUNICP_INVALID is stored here on failure. * * @remark We optimize this operation by using an inline function for * everything which isn't a surrogate pair or and endian indicator. */ DECLINLINE(int) RTUtf16GetCpEx(PCRTUTF16 *ppwsz, PRTUNICP pCp) { const RTUTF16 wc = **ppwsz; if (wc < 0xd800 || (wc > 0xdfff && wc < 0xfffe)) { (*ppwsz)++; *pCp = wc; return VINF_SUCCESS; } return RTUtf16GetCpExInternal(ppwsz, pCp); } /** * Put the unicode code point at the given string position * and return the pointer to the char following it. * * This function will not consider anything at or following the the * buffer area pointed to by pwsz. It is therefore not suitable for * inserting code points into a string, only appending/overwriting. * * @returns pointer to the char following the written code point. * @param pwsz The string. * @param CodePoint The code point to write. * This sould not be RTUNICP_INVALID or any other charater * out of the UTF-16 range. * * @remark We optimize this operation by using an inline function for * everything which isn't a surrogate pair or and endian indicator. */ DECLINLINE(PRTUTF16) RTUtf16PutCp(PRTUTF16 pwsz, RTUNICP CodePoint) { if (CodePoint < 0xd800 || (CodePoint > 0xd800 && CodePoint < 0xfffe)) { *pwsz++ = (RTUTF16)CodePoint; return pwsz; } return RTUtf16PutCpInternal(pwsz, CodePoint); } /** * Skips ahead, past the current code point. * * @returns Pointer to the char after the current code point. * @param pwsz Pointer to the current code point. * @remark This will not move the next valid code point, only past the current one. */ DECLINLINE(PRTUTF16) RTUtf16NextCp(PCRTUTF16 pwsz) { RTUNICP Cp; RTUtf16GetCpEx(&pwsz, &Cp); return (PRTUTF16)pwsz; } /** * Skips backwards, to the previous code point. * * @returns Pointer to the char after the current code point. * @param pwszStart Pointer to the start of the string. * @param pwsz Pointer to the current code point. */ RTDECL(PRTUTF16) RTUtf16PrevCp(PCRTUTF16 pwszStart, PCRTUTF16 pwsz); /** * Checks if the UTF-16 char is the high surrogate char (i.e. * the 1st char in the pair). * * @returns true if it is. * @returns false if it isn't. * @param wc The character to investigate. */ DECLINLINE(bool) RTUtf16IsHighSurrogate(RTUTF16 wc) { return wc >= 0xd800 && wc <= 0xdbff; } /** * Checks if the UTF-16 char is the low surrogate char (i.e. * the 2nd char in the pair). * * @returns true if it is. * @returns false if it isn't. * @param wc The character to investigate. */ DECLINLINE(bool) RTUtf16IsLowSurrogate(RTUTF16 wc) { return wc >= 0xdc00 && wc <= 0xdfff; } /** * Checks if the two UTF-16 chars form a valid surrogate pair. * * @returns true if they do. * @returns false if they doesn't. * @param wcHigh The high (1st) character. * @param wcLow The low (2nd) character. */ DECLINLINE(bool) RTUtf16IsSurrogatePair(RTUTF16 wcHigh, RTUTF16 wcLow) { return RTUtf16IsHighSurrogate(wcHigh) && RTUtf16IsLowSurrogate(wcLow); } /** @} */ __END_DECLS /** @} */ #endif