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virtualbox/include/iprt/string.h
Daniel Baumann df1bda4fe9
Adding upstream version 7.0.20-dfsg. 
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
2025-06-22 09:56:04 +02:00

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/** @file
* IPRT - String Manipulation.
*/
/*
* Copyright (C) 2006-2023 Oracle and/or its affiliates.
*
* This file is part of VirtualBox base platform packages, as
* available from https://www.virtualbox.org.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, in version 3 of the
* License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <https://www.gnu.org/licenses>.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
* in the VirtualBox 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.
*
* SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
*/
#ifndef IPRT_INCLUDED_string_h
#define IPRT_INCLUDED_string_h
#ifndef RT_WITHOUT_PRAGMA_ONCE
# pragma once
#endif
#include <iprt/cdefs.h>
#include <iprt/types.h>
#include <iprt/assert.h>
#include <iprt/stdarg.h>
#include <iprt/errcore.h> /* for VINF_SUCCESS */
#if defined(RT_OS_LINUX) && defined(__KERNEL__)
/* no C++ hacks ('new' etc) here anymore! */
# include <linux/string.h>
# include <iprt/linux/version.h>
#elif defined(IN_XF86_MODULE) && !defined(NO_ANSIC)
RT_C_DECLS_BEGIN
# include "xf86_ansic.h"
RT_C_DECLS_END
#elif defined(RT_OS_FREEBSD) && defined(_KERNEL)
RT_C_DECLS_BEGIN
# include <sys/libkern.h>
RT_C_DECLS_END
#elif defined(RT_OS_NETBSD) && defined(_KERNEL)
RT_C_DECLS_BEGIN
# include <lib/libkern/libkern.h>
RT_C_DECLS_END
#elif defined(RT_OS_SOLARIS) && defined(_KERNEL)
/*
* Same case as with FreeBSD kernel:
* The string.h stuff clashes with sys/system.h
* ffs = find first set bit.
*/
# define ffs ffs_string_h
# define fls fls_string_h
# include <string.h>
# undef fls
# undef ffs
# undef strpbrk
#else
# include <string.h>
#endif
/*
* Supply prototypes for standard string functions provided by
* IPRT instead of the operating environment.
*/
#if defined(RT_OS_DARWIN) && defined(KERNEL)
RT_C_DECLS_BEGIN
void *memchr(const void *pv, int ch, size_t cb);
char *strpbrk(const char *pszStr, const char *pszChars);
RT_C_DECLS_END
#endif
#if defined(RT_OS_FREEBSD) && defined(_KERNEL)
RT_C_DECLS_BEGIN
char *strpbrk(const char *pszStr, const char *pszChars);
RT_C_DECLS_END
#endif
#if defined(RT_OS_NETBSD) && defined(_KERNEL)
RT_C_DECLS_BEGIN
char *strpbrk(const char *pszStr, const char *pszChars);
RT_C_DECLS_END
#endif
#if (defined(RT_OS_DARWIN) || defined(RT_OS_SOLARIS) || defined(RT_OS_WINDOWS)) && !defined(IPRT_NO_CRT)
RT_C_DECLS_BEGIN
# if !defined(RT_OS_DARWIN) || RT_CLANG_PREREQ(7 /* whatever post gcc-4.2 */, 0)
RTDECL(void *) mempcpy(void *pvDst, const void *pvSrc, size_t cb);
# else
void *mempcpy(void *pvDst, const void *pvSrc, size_t cb);
# endif
RT_C_DECLS_END
#endif
#if (!defined(RT_OS_LINUX) || !defined(_GNU_SOURCE)) \
&& (!defined(RT_OS_OS2) || !defined(_GNU_SOURCE)) \
&& !defined(RT_OS_FREEBSD) \
&& !defined(RT_OS_NETBSD)
RT_C_DECLS_BEGIN
void *memrchr(const void *pv, int ch, size_t cb);
RT_C_DECLS_END
#endif
/** @def RT_USE_RTC_3629
* When defined the UTF-8 range will stop at 0x10ffff. If not defined, the
* range stops at 0x7fffffff.
* @remarks Must be defined both when building and using the IPRT. */
#ifdef DOXYGEN_RUNNING
# define RT_USE_RTC_3629
#endif
/** @defgroup grp_rt_str RTStr - String Manipulation
* Mostly UTF-8 related helpers where the standard string functions won't do.
* @ingroup grp_rt
* @{
*/
RT_C_DECLS_BEGIN
/**
* The maximum string length.
*/
#define RTSTR_MAX (~(size_t)0)
/** @def RTSTR_TAG
* The default allocation tag used by the RTStr allocation APIs.
*
* When not defined before the inclusion of iprt/string.h, this will default to
* the pointer to the current file name. The string API will make of use of
* this as pointer to a volatile but read-only string.
*/
#if !defined(RTSTR_TAG) || defined(DOXYGEN_RUNNING)
# define RTSTR_TAG (__FILE__)
#endif
/**
* Byte zero the specified object.
*
* This will use sizeof(Obj) to figure the size and will call memset, bzero
* or some compiler intrinsic to perform the actual zeroing.
*
* @param Obj The object to zero. Make sure to dereference pointers.
*
* @remarks Because the macro may use memset it has been placed in string.h
* instead of cdefs.h to avoid build issues because someone forgot
* to include this header.
*
* @ingroup grp_rt_cdefs
*/
#define RT_ZERO(Obj) RT_BZERO(&(Obj), sizeof(Obj))
/**
* Byte zero the specified memory area.
*
* This will call memset, bzero or some compiler intrinsic to clear the
* specified bytes of memory.
*
* @param pv Pointer to the memory.
* @param cb The number of bytes to clear. Please, don't pass 0.
*
* @remarks Because the macro may use memset it has been placed in string.h
* instead of cdefs.h to avoid build issues because someone forgot
* to include this header.
*
* @ingroup grp_rt_cdefs
*/
#define RT_BZERO(pv, cb) do { memset((pv), 0, cb); } while (0)
/**
* For copying a volatile variable to a non-volatile one.
* @param a_Dst The non-volatile destination variable.
* @param a_VolatileSrc The volatile source variable / dereferenced pointer.
*/
#define RT_COPY_VOLATILE(a_Dst, a_VolatileSrc) \
do { \
void const volatile *a_pvVolatileSrc_BCopy_Volatile = &(a_VolatileSrc); \
AssertCompile(sizeof(a_Dst) == sizeof(a_VolatileSrc)); \
memcpy(&(a_Dst), (void const *)a_pvVolatileSrc_BCopy_Volatile, sizeof(a_Dst)); \
} while (0)
/**
* For copy a number of bytes from a volatile buffer to a non-volatile one.
*
* @param a_pDst Pointer to the destination buffer.
* @param a_pVolatileSrc Pointer to the volatile source buffer.
* @param a_cbToCopy Number of bytes to copy.
*/
#define RT_BCOPY_VOLATILE(a_pDst, a_pVolatileSrc, a_cbToCopy) \
do { \
void const volatile *a_pvVolatileSrc_BCopy_Volatile = (a_pVolatileSrc); \
memcpy((a_pDst), (void const *)a_pvVolatileSrc_BCopy_Volatile, (a_cbToCopy)); \
} while (0)
/** @def RT_BCOPY_UNFORTIFIED
* For copying a number of bytes from/to variable length structures.
*
* This is for working around false positives ("field-spanning writes") in the
* linux kernel's fortified memcpy (v5.18+) when copying from/to
* RT_FLEXIBLE_ARRAY fields and similar tricks going beyond the strict
* definition of a target or source structure.
*
* @param a_pDst Pointer to the destination buffer.
* @param a_pSrc Pointer to the source buffer.
* @param a_cbToCopy Number of bytes to copy.
* @see @bugref{10209}, @ticketref{21410}
*/
#if defined(RT_OS_LINUX) && defined(__KERNEL__)
# if (RTLNX_VER_MIN(5,18,0) || RTLNX_RHEL_RANGE(9,3, 9,99)) \
&& !defined(__NO_FORTIFY) \
&& defined(__OPTIMIZE__) \
&& defined(CONFIG_FORTIFY_SOURCE)
# define RT_BCOPY_UNFORTIFIED(a_pDst, a_pSrc, a_cbToCopy) __underlying_memcpy((a_pDst), (a_pSrc), (a_cbToCopy))
# else
# define RT_BCOPY_UNFORTIFIED(a_pDst, a_pSrc, a_cbToCopy) memcpy((a_pDst), (a_pSrc), (a_cbToCopy))
# endif
#else /* !RT_OS_LINUX && !__KERNEL__ */
# define RT_BCOPY_UNFORTIFIED(a_pDst, a_pSrc, a_cbToCopy) memcpy((a_pDst), (a_pSrc), (a_cbToCopy))
#endif /* !RT_OS_LINUX && !__KERNEL__ */
#ifdef IN_RING3
/**
* Allocates tmp buffer with default tag, 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.
*/
#define RTStrUtf8ToCurrentCP(ppszString, pszString) RTStrUtf8ToCurrentCPTag((ppszString), (pszString), RTSTR_TAG)
/**
* Allocates tmp buffer with custom tag, translates pszString from UTF-8 to
* current codepage.
*
* @returns iprt status code.
* @param ppszString Receives pointer of allocated native CP string.
* The returned pointer must be freed using
* RTStrFree()., const char *pszTag
* @param pszString UTF-8 string to convert.
* @param pszTag Allocation tag used for statistics and such.
*/
RTR3DECL(int) RTStrUtf8ToCurrentCPTag(char **ppszString, const char *pszString, const char *pszTag);
/**
* Allocates tmp buffer with default tag, translates pszString from UTF-8 to
* current codepage, extended version.
*
* @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.
* @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.
*/
#define RTStrUtf8ToCurrentCPEx(ppszString, pszString, cchString) \
RTStrUtf8ToCurrentCPExTag((ppszString), (pszString), (cchString), RTSTR_TAG)
/**
* Allocates tmp buffer with custom tag, 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()., const char *pszTag
* @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 pszTag Allocation tag used for statistics and such.
*/
RTR3DECL(int) RTStrUtf8ToCurrentCPExTag(char **ppszString, const char *pszString, size_t cchString, const char *pszTag);
/**
* 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.
*/
#define RTStrCurrentCPToUtf8(ppszString, pszString) RTStrCurrentCPToUtf8Tag((ppszString), (pszString), RTSTR_TAG)
/**
* 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.
* @param pszTag Allocation tag used for statistics and such.
*/
RTR3DECL(int) RTStrCurrentCPToUtf8Tag(char **ppszString, const char *pszString, const char *pszTag);
/**
* Allocates tmp buffer, translates pszString from console 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.
*/
#define RTStrConsoleCPToUtf8(ppszString, pszString) RTStrConsoleCPToUtf8Tag((ppszString), (pszString), RTSTR_TAG)
/**
* Allocates tmp buffer, translates pszString from console 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.
* @param pszTag Allocation tag used for statistics and such.
*/
RTR3DECL(int) RTStrConsoleCPToUtf8Tag(char **ppszString, const char *pszString, const char *pszTag);
#endif /* IN_RING3 */
/**
* Free string allocated by any of the non-UCS-2 string functions.
*
* @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 (default tag).
*
* @returns Pointer to the allocated UTF-8 string.
* @param pszString UTF-8 string to duplicate.
*/
#define RTStrDup(pszString) RTStrDupTag((pszString), RTSTR_TAG)
/**
* Allocates a new copy of the given UTF-8 string (custom tag).
*
* @returns Pointer to the allocated UTF-8 string.
* @param pszString UTF-8 string to duplicate.
* @param pszTag Allocation tag used for statistics and such.
*/
RTDECL(char *) RTStrDupTag(const char *pszString, const char *pszTag);
/**
* Allocates a new copy of the given UTF-8 string (default tag).
*
* @returns iprt status code.
* @param ppszCopy Receives pointer of the allocated UTF-8 string.
* The returned pointer must be freed using RTStrFree().
* @param pszString UTF-8 string to duplicate.
*/
#define RTStrDupEx(ppszCopy, pszString) RTStrDupExTag((ppszCopy), (pszString), RTSTR_TAG)
/**
* Allocates a new copy of the given UTF-8 string (custom tag).
*
* @returns iprt status code.
* @param ppszCopy Receives pointer of the allocated UTF-8 string.
* The returned pointer must be freed using RTStrFree().
* @param pszString UTF-8 string to duplicate.
* @param pszTag Allocation tag used for statistics and such.
*/
RTDECL(int) RTStrDupExTag(char **ppszCopy, const char *pszString, const char *pszTag);
/**
* Allocates a new copy of the given UTF-8 substring (default tag).
*
* @returns Pointer to the allocated UTF-8 substring.
* @param pszString UTF-8 string to duplicate.
* @param cchMax The max number of chars to duplicate, not counting
* the terminator.
*/
#define RTStrDupN(pszString, cchMax) RTStrDupNTag((pszString), (cchMax), RTSTR_TAG)
/**
* Allocates a new copy of the given UTF-8 substring (custom tag).
*
* @returns Pointer to the allocated UTF-8 substring.
* @param pszString UTF-8 string to duplicate.
* @param cchMax The max number of chars to duplicate, not counting
* the terminator.
* @param pszTag Allocation tag used for statistics and such.
*/
RTDECL(char *) RTStrDupNTag(const char *pszString, size_t cchMax, const char *pszTag);
/**
* Allocates a new copy of the given UTF-8 substring (default tag).
*
* @returns iprt status code (VINF_SUCCESS or VERR_NO_STR_MEMORY).
* @param ppszCopy Receives pointer of the allocated UTF-8 substring.
* The returned pointer must be freed using RTStrFree().
* @param pszString UTF-8 string to duplicate.
* @param cchMax The max number of chars to duplicate, not counting
* the terminator.
*/
#define RTStrDupNEx(ppszCopy, pszString, cchMax) RTStrDupNExTag((ppszCopy), (pszString), (cchMax), RTSTR_TAG)
/**
* Allocates a new copy of the given UTF-8 substring (custom tag).
*
* @returns iprt status code (VINF_SUCCESS or VERR_NO_STR_MEMORY).
* @param ppszCopy Receives pointer of the allocated UTF-8 substring.
* The returned pointer must be freed using RTStrFree().
* @param pszString UTF-8 string to duplicate.
* @param cchMax The max number of chars to duplicate, not counting
* the terminator.
* @param pszTag Allocation tag used for statistics and such.
*/
RTDECL(int) RTStrDupNExTag(char **ppszCopy, const char *pszString, size_t cchMax, const char *pszTag);
/**
* Appends a string onto an existing IPRT allocated string (default tag).
*
* @retval VINF_SUCCESS
* @retval VERR_NO_STR_MEMORY if we failed to reallocate the string, @a *ppsz
* remains unchanged.
*
* @param ppsz Pointer to the string pointer. The string
* pointer must either be NULL or point to a string
* returned by an IPRT string API. (In/Out)
* @param pszAppend The string to append. NULL and empty strings
* are quietly ignored.
*/
#define RTStrAAppend(ppsz, pszAppend) RTStrAAppendTag((ppsz), (pszAppend), RTSTR_TAG)
/**
* Appends a string onto an existing IPRT allocated string (custom tag).
*
* @retval VINF_SUCCESS
* @retval VERR_NO_STR_MEMORY if we failed to reallocate the string, @a *ppsz
* remains unchanged.
*
* @param ppsz Pointer to the string pointer. The string
* pointer must either be NULL or point to a string
* returned by an IPRT string API. (In/Out)
* @param pszAppend The string to append. NULL and empty strings
* are quietly ignored.
* @param pszTag Allocation tag used for statistics and such.
*/
RTDECL(int) RTStrAAppendTag(char **ppsz, const char *pszAppend, const char *pszTag);
/**
* Appends N bytes from a strings onto an existing IPRT allocated string
* (default tag).
*
* @retval VINF_SUCCESS
* @retval VERR_NO_STR_MEMORY if we failed to reallocate the string, @a *ppsz
* remains unchanged.
*
* @param ppsz Pointer to the string pointer. The string
* pointer must either be NULL or point to a string
* returned by an IPRT string API. (In/Out)
* @param pszAppend The string to append. Can be NULL if cchAppend
* is NULL.
* @param cchAppend The number of chars (not code points) to append
* from pszAppend. Must not be more than
* @a pszAppend contains, except for the special
* value RTSTR_MAX that can be used to indicate all
* of @a pszAppend without having to strlen it.
*/
#define RTStrAAppendN(ppsz, pszAppend, cchAppend) RTStrAAppendNTag((ppsz), (pszAppend), (cchAppend), RTSTR_TAG)
/**
* Appends N bytes from a strings onto an existing IPRT allocated string (custom
* tag).
*
* @retval VINF_SUCCESS
* @retval VERR_NO_STR_MEMORY if we failed to reallocate the string, @a *ppsz
* remains unchanged.
*
* @param ppsz Pointer to the string pointer. The string
* pointer must either be NULL or point to a string
* returned by an IPRT string API. (In/Out)
* @param pszAppend The string to append. Can be NULL if cchAppend
* is NULL.
* @param cchAppend The number of chars (not code points) to append
* from pszAppend. Must not be more than
* @a pszAppend contains, except for the special
* value RTSTR_MAX that can be used to indicate all
* of @a pszAppend without having to strlen it.
* @param pszTag Allocation tag used for statistics and such.
*/
RTDECL(int) RTStrAAppendNTag(char **ppsz, const char *pszAppend, size_t cchAppend, const char *pszTag);
/**
* Appends one or more strings onto an existing IPRT allocated string.
*
* This is a very flexible and efficient alternative to using RTStrAPrintf to
* combine several strings together.
*
* @retval VINF_SUCCESS
* @retval VERR_NO_STR_MEMORY if we failed to reallocate the string, @a *ppsz
* remains unchanged.
*
* @param ppsz Pointer to the string pointer. The string
* pointer must either be NULL or point to a string
* returned by an IPRT string API. (In/Out)
* @param cPairs The number of string / length pairs in the
* @a va.
* @param va List of string (const char *) and length
* (size_t) pairs. The strings will be appended to
* the string in the first argument.
*/
#define RTStrAAppendExNV(ppsz, cPairs, va) RTStrAAppendExNVTag((ppsz), (cPairs), (va), RTSTR_TAG)
/**
* Appends one or more strings onto an existing IPRT allocated string.
*
* This is a very flexible and efficient alternative to using RTStrAPrintf to
* combine several strings together.
*
* @retval VINF_SUCCESS
* @retval VERR_NO_STR_MEMORY if we failed to reallocate the string, @a *ppsz
* remains unchanged.
*
* @param ppsz Pointer to the string pointer. The string
* pointer must either be NULL or point to a string
* returned by an IPRT string API. (In/Out)
* @param cPairs The number of string / length pairs in the
* @a va.
* @param va List of string (const char *) and length
* (size_t) pairs. The strings will be appended to
* the string in the first argument.
* @param pszTag Allocation tag used for statistics and such.
*/
RTDECL(int) RTStrAAppendExNVTag(char **ppsz, size_t cPairs, va_list va, const char *pszTag);
/**
* Appends one or more strings onto an existing IPRT allocated string
* (untagged).
*
* This is a very flexible and efficient alternative to using RTStrAPrintf to
* combine several strings together.
*
* @retval VINF_SUCCESS
* @retval VERR_NO_STR_MEMORY if we failed to reallocate the string, @a *ppsz
* remains unchanged.
*
* @param ppsz Pointer to the string pointer. The string
* pointer must either be NULL or point to a string
* returned by an IPRT string API. (In/Out)
* @param cPairs The number of string / length pairs in the
* ellipsis.
* @param ... List of string (const char *) and length
* (size_t) pairs. The strings will be appended to
* the string in the first argument.
*/
DECLINLINE(int) RTStrAAppendExN(char **ppsz, size_t cPairs, ...)
{
int rc;
va_list va;
va_start(va, cPairs);
rc = RTStrAAppendExNVTag(ppsz, cPairs, va, RTSTR_TAG);
va_end(va);
return rc;
}
/**
* Appends one or more strings onto an existing IPRT allocated string (custom
* tag).
*
* This is a very flexible and efficient alternative to using RTStrAPrintf to
* combine several strings together.
*
* @retval VINF_SUCCESS
* @retval VERR_NO_STR_MEMORY if we failed to reallocate the string, @a *ppsz
* remains unchanged.
*
* @param ppsz Pointer to the string pointer. The string
* pointer must either be NULL or point to a string
* returned by an IPRT string API. (In/Out)
* @param pszTag Allocation tag used for statistics and such.
* @param cPairs The number of string / length pairs in the
* ellipsis.
* @param ... List of string (const char *) and length
* (size_t) pairs. The strings will be appended to
* the string in the first argument.
*/
DECLINLINE(int) RTStrAAppendExNTag(char **ppsz, const char *pszTag, size_t cPairs, ...)
{
int rc;
va_list va;
va_start(va, cPairs);
rc = RTStrAAppendExNVTag(ppsz, cPairs, va, pszTag);
va_end(va);
return rc;
}
/**
* Truncates an IPRT allocated string (default tag).
*
* @retval VINF_SUCCESS.
* @retval VERR_OUT_OF_RANGE if cchNew is too long. Nothing is done.
*
* @param ppsz Pointer to the string pointer. The string
* pointer can be NULL if @a cchNew is 0, no change
* is made then. If we actually reallocate the
* string, the string pointer might be changed by
* this call. (In/Out)
* @param cchNew The new string length (excluding the
* terminator). The string must be at least this
* long or we'll return VERR_OUT_OF_RANGE and
* assert on you.
*/
#define RTStrATruncate(ppsz, cchNew) RTStrATruncateTag((ppsz), (cchNew), RTSTR_TAG)
/**
* Truncates an IPRT allocated string.
*
* @retval VINF_SUCCESS.
* @retval VERR_OUT_OF_RANGE if cchNew is too long. Nothing is done.
*
* @param ppsz Pointer to the string pointer. The string
* pointer can be NULL if @a cchNew is 0, no change
* is made then. If we actually reallocate the
* string, the string pointer might be changed by
* this call. (In/Out)
* @param cchNew The new string length (excluding the
* terminator). The string must be at least this
* long or we'll return VERR_OUT_OF_RANGE and
* assert on you.
* @param pszTag Allocation tag used for statistics and such.
*/
RTDECL(int) RTStrATruncateTag(char **ppsz, size_t cchNew, const char *pszTag);
/**
* Allocates memory for string storage (default tag).
*
* You should normally not use this function, except if there is some very
* custom string handling you need doing that isn't covered by any of the other
* APIs.
*
* @returns Pointer to the allocated string. The first byte is always set
* to the string terminator char, the contents of the remainder of the
* memory is undefined. The string must be freed by calling RTStrFree.
*
* NULL is returned if the allocation failed. Please translate this to
* VERR_NO_STR_MEMORY and not VERR_NO_MEMORY. Also consider
* RTStrAllocEx if an IPRT status code is required.
*
* @param cb How many bytes to allocate. If this is zero, we
* will allocate a terminator byte anyway.
*/
#define RTStrAlloc(cb) RTStrAllocTag((cb), RTSTR_TAG)
/**
* Allocates memory for string storage (custom tag).
*
* You should normally not use this function, except if there is some very
* custom string handling you need doing that isn't covered by any of the other
* APIs.
*
* @returns Pointer to the allocated string. The first byte is always set
* to the string terminator char, the contents of the remainder of the
* memory is undefined. The string must be freed by calling RTStrFree.
*
* NULL is returned if the allocation failed. Please translate this to
* VERR_NO_STR_MEMORY and not VERR_NO_MEMORY. Also consider
* RTStrAllocEx if an IPRT status code is required.
*
* @param cb How many bytes to allocate. If this is zero, we
* will allocate a terminator byte anyway.
* @param pszTag Allocation tag used for statistics and such.
*/
RTDECL(char *) RTStrAllocTag(size_t cb, const char *pszTag);
/**
* Allocates memory for string storage, with status code (default tag).
*
* You should normally not use this function, except if there is some very
* custom string handling you need doing that isn't covered by any of the other
* APIs.
*
* @retval VINF_SUCCESS
* @retval VERR_NO_STR_MEMORY
*
* @param ppsz Where to return the allocated string. This will
* be set to NULL on failure. On success, the
* returned memory will always start with a
* terminator char so that it is considered a valid
* C string, the contents of rest of the memory is
* undefined.
* @param cb How many bytes to allocate. If this is zero, we
* will allocate a terminator byte anyway.
*/
#define RTStrAllocEx(ppsz, cb) RTStrAllocExTag((ppsz), (cb), RTSTR_TAG)
/**
* Allocates memory for string storage, with status code (custom tag).
*
* You should normally not use this function, except if there is some very
* custom string handling you need doing that isn't covered by any of the other
* APIs.
*
* @retval VINF_SUCCESS
* @retval VERR_NO_STR_MEMORY
*
* @param ppsz Where to return the allocated string. This will
* be set to NULL on failure. On success, the
* returned memory will always start with a
* terminator char so that it is considered a valid
* C string, the contents of rest of the memory is
* undefined.
* @param cb How many bytes to allocate. If this is zero, we
* will allocate a terminator byte anyway.
* @param pszTag Allocation tag used for statistics and such.
*/
RTDECL(int) RTStrAllocExTag(char **ppsz, size_t cb, const char *pszTag);
/**
* Reallocates the specified string (default tag).
*
* You should normally not have use this function, except perhaps to truncate a
* really long string you've got from some IPRT string API, but then you should
* use RTStrATruncate.
*
* @returns VINF_SUCCESS.
* @retval VERR_NO_STR_MEMORY if we failed to reallocate the string, @a *ppsz
* remains unchanged.
*
* @param ppsz Pointer to the string variable containing the
* input and output string.
*
* When not freeing the string, the result will
* always have the last byte set to the terminator
* character so that when used for string
* truncation the result will be a valid C string
* (your job to keep it a valid UTF-8 string).
*
* When the input string is NULL and we're supposed
* to reallocate, the returned string will also
* have the first byte set to the terminator char
* so it will be a valid C string.
*
* @param cbNew When @a cbNew is zero, we'll behave like
* RTStrFree and @a *ppsz will be set to NULL.
*
* When not zero, this will be the new size of the
* memory backing the string, i.e. it includes the
* terminator char.
*/
#define RTStrRealloc(ppsz, cbNew) RTStrReallocTag((ppsz), (cbNew), RTSTR_TAG)
/**
* Reallocates the specified string (custom tag).
*
* You should normally not have use this function, except perhaps to truncate a
* really long string you've got from some IPRT string API, but then you should
* use RTStrATruncate.
*
* @returns VINF_SUCCESS.
* @retval VERR_NO_STR_MEMORY if we failed to reallocate the string, @a *ppsz
* remains unchanged.
*
* @param ppsz Pointer to the string variable containing the
* input and output string.
*
* When not freeing the string, the result will
* always have the last byte set to the terminator
* character so that when used for string
* truncation the result will be a valid C string
* (your job to keep it a valid UTF-8 string).
*
* When the input string is NULL and we're supposed
* to reallocate, the returned string will also
* have the first byte set to the terminator char
* so it will be a valid C string.
*
* @param cbNew When @a cbNew is zero, we'll behave like
* RTStrFree and @a *ppsz will be set to NULL.
*
* When not zero, this will be the new size of the
* memory backing the string, i.e. it includes the
* terminator char.
* @param pszTag Allocation tag used for statistics and such.
*/
RTDECL(int) RTStrReallocTag(char **ppsz, size_t cbNew, const char *pszTag);
/**
* Validates the UTF-8 encoding of the string.
*
* @returns iprt status code.
* @param psz The string.
*/
RTDECL(int) RTStrValidateEncoding(const char *psz);
/** @name Flags for RTStrValidateEncodingEx and RTUtf16ValidateEncodingEx
* @{
*/
/** Check that the string is zero terminated within the given size.
* VERR_BUFFER_OVERFLOW will be returned if the check fails. */
#define RTSTR_VALIDATE_ENCODING_ZERO_TERMINATED RT_BIT_32(0)
/** Check that the string is exactly the given length.
* If it terminates early, VERR_BUFFER_UNDERFLOW will be returned. When used
* together with RTSTR_VALIDATE_ENCODING_ZERO_TERMINATED, the given length must
* include the terminator or VERR_BUFFER_OVERFLOW will be returned. */
#define RTSTR_VALIDATE_ENCODING_EXACT_LENGTH RT_BIT_32(1)
/** @} */
/**
* Validates the UTF-8 encoding of the string.
*
* @returns iprt status code.
* @param psz The string.
* @param cch The max string length (/ size). Use RTSTR_MAX to
* process the entire string.
* @param fFlags Combination of RTSTR_VALIDATE_ENCODING_XXX flags.
*/
RTDECL(int) RTStrValidateEncodingEx(const char *psz, size_t cch, uint32_t fFlags);
/**
* Checks if the UTF-8 encoding is valid.
*
* @returns true / false.
* @param psz The string.
*/
RTDECL(bool) RTStrIsValidEncoding(const char *psz);
/**
* Purge all bad UTF-8 encoding in the string, replacing it with '?'.
*
* @returns The number of bad characters (0 if nothing was done).
* @param psz The string to purge.
*/
RTDECL(size_t) RTStrPurgeEncoding(char *psz);
/**
* Sanitizes a (valid) UTF-8 string by replacing all characters outside a white
* list in-place by an ASCII replacedment character.
*
* Multi-byte characters will be replaced byte by byte.
*
* @returns The number of code points replaced. In the case of an incorrectly
* encoded string -1 will be returned, and the string is not completely
* processed. In the case of puszValidPairs having an odd number of
* code points, -1 will be also return but without any modification to
* the string.
* @param psz The string to sanitise.
* @param puszValidPairs A zero-terminated array of pairs of Unicode points.
* Each pair is the start and end point of a range,
* and the union of these ranges forms the white list.
* @param chReplacement The ASCII replacement character.
*/
RTDECL(ssize_t) RTStrPurgeComplementSet(char *psz, PCRTUNICP puszValidPairs, char chReplacement);
/**
* 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 requested 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,
* excluding the terminator. (Optional)
*
* This may be set under some error conditions,
* however, only for VERR_BUFFER_OVERFLOW and
* VERR_NO_STR_MEMORY will it contain a valid string
* length that can be used to resize the buffer.
*/
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 purposes 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 (default
* tag).
*
* @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().
*/
#define RTStrToUtf16(pszString, ppwszString) RTStrToUtf16Tag((pszString), (ppwszString), RTSTR_TAG)
/**
* Translate a UTF-8 string into a UTF-16 allocating the result buffer (custom
* tag).
*
* This differs from RTStrToUtf16 in that it always produces a
* big-endian string.
*
* @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().
* @param pszTag Allocation tag used for statistics and such.
*/
RTDECL(int) RTStrToUtf16Tag(const char *pszString, PRTUTF16 *ppwszString, const char *pszTag);
/**
* Translate a UTF-8 string into a UTF-16BE allocating the result buffer
* (default tag).
*
* This differs from RTStrToUtf16Tag in that it always produces a
* big-endian string.
*
* @returns iprt status code.
* @param pszString UTF-8 string to convert.
* @param ppwszString Receives pointer to the allocated UTF-16BE string.
* The returned string must be freed using RTUtf16Free().
*/
#define RTStrToUtf16Big(pszString, ppwszString) RTStrToUtf16BigTag((pszString), (ppwszString), RTSTR_TAG)
/**
* Translate a UTF-8 string into a UTF-16BE allocating the result buffer (custom
* tag).
*
* @returns iprt status code.
* @param pszString UTF-8 string to convert.
* @param ppwszString Receives pointer to the allocated UTF-16BE string.
* The returned string must be freed using RTUtf16Free().
* @param pszTag Allocation tag used for statistics and such.
*/
RTDECL(int) RTStrToUtf16BigTag(const char *pszString, PRTUTF16 *ppwszString, const char *pszTag);
/**
* 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 requested 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,
* excluding the terminator. (Optional)
*
* This may be set under some error conditions,
* however, only for VERR_BUFFER_OVERFLOW and
* VERR_NO_STR_MEMORY will it contain a valid string
* length that can be used to resize the buffer.
*/
#define RTStrToUtf16Ex(pszString, cchString, ppwsz, cwc, pcwc) \
RTStrToUtf16ExTag((pszString), (cchString), (ppwsz), (cwc), (pcwc), RTSTR_TAG)
/**
* Translates pszString from UTF-8 to UTF-16, allocating the result buffer if
* requested (custom tag).
*
* @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 requested 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,
* excluding the terminator. (Optional)
*
* This may be set under some error conditions,
* however, only for VERR_BUFFER_OVERFLOW and
* VERR_NO_STR_MEMORY will it contain a valid string
* length that can be used to resize the buffer.
* @param pszTag Allocation tag used for statistics and such.
*/
RTDECL(int) RTStrToUtf16ExTag(const char *pszString, size_t cchString,
PRTUTF16 *ppwsz, size_t cwc, size_t *pcwc, const char *pszTag);
/**
* Translates pszString from UTF-8 to UTF-16BE, allocating the result buffer if requested.
*
* This differs from RTStrToUtf16Ex in that it always produces a
* big-endian string.
*
* @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 requested 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,
* excluding the terminator. (Optional)
*
* This may be set under some error conditions,
* however, only for VERR_BUFFER_OVERFLOW and
* VERR_NO_STR_MEMORY will it contain a valid string
* length that can be used to resize the buffer.
*/
#define RTStrToUtf16BigEx(pszString, cchString, ppwsz, cwc, pcwc) \
RTStrToUtf16BigExTag((pszString), (cchString), (ppwsz), (cwc), (pcwc), RTSTR_TAG)
/**
* Translates pszString from UTF-8 to UTF-16BE, allocating the result buffer if
* requested (custom tag).
*
* This differs from RTStrToUtf16ExTag in that it always produces a
* big-endian string.
*
* @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 requested 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,
* excluding the terminator. (Optional)
*
* This may be set under some error conditions,
* however, only for VERR_BUFFER_OVERFLOW and
* VERR_NO_STR_MEMORY will it contain a valid string
* length that can be used to resize the buffer.
* @param pszTag Allocation tag used for statistics and such.
*/
RTDECL(int) RTStrToUtf16BigExTag(const char *pszString, size_t cchString,
PRTUTF16 *ppwsz, size_t cwc, size_t *pcwc, const char *pszTag);
/**
* Calculates the length of the string in Latin-1 characters.
*
* This function will validate the string, and incorrectly encoded UTF-8
* strings as well as string with codepoints outside the latin-1 range will be
* rejected. The primary purpose of this function is to help allocate buffers
* for RTStrToLatin1Ex of the correct size. For most other purposes
* RTStrCalcLatin1LenEx() should be used.
*
* @returns Number of Latin-1 characters.
* @returns 0 if the string was incorrectly encoded.
* @param psz The string.
*/
RTDECL(size_t) RTStrCalcLatin1Len(const char *psz);
/**
* Calculates the length of the string in Latin-1 characters.
*
* This function will validate the string, and incorrectly encoded UTF-8
* strings as well as string with codepoints outside the latin-1 range 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 pcch Where to store the string length. Optional.
* This is undefined on failure.
*/
RTDECL(int) RTStrCalcLatin1LenEx(const char *psz, size_t cch, size_t *pcch);
/**
* Translate a UTF-8 string into a Latin-1 allocating the result buffer (default
* tag).
*
* @returns iprt status code.
* @param pszString UTF-8 string to convert.
* @param ppszString Receives pointer to the allocated Latin-1 string.
* The returned string must be freed using RTStrFree().
*/
#define RTStrToLatin1(pszString, ppszString) RTStrToLatin1Tag((pszString), (ppszString), RTSTR_TAG)
/**
* Translate a UTF-8 string into a Latin-1 allocating the result buffer (custom
* tag).
*
* @returns iprt status code.
* @param pszString UTF-8 string to convert.
* @param ppszString Receives pointer to the allocated Latin-1 string.
* The returned string must be freed using RTStrFree().
* @param pszTag Allocation tag used for statistics and such.
*/
RTDECL(int) RTStrToLatin1Tag(const char *pszString, char **ppszString, const char *pszTag);
/**
* Translates pszString from UTF-8 to Latin-1, 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 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 items will be
* allocated to hold the translated string. If a
* buffer was requested it must be freed using
* RTStrFree().
* @param cch The buffer size in bytes. This includes the
* terminator.
* @param pcch Where to store the length of the translated string,
* excluding the terminator. (Optional)
*
* This may be set under some error conditions,
* however, only for VERR_BUFFER_OVERFLOW and
* VERR_NO_STR_MEMORY will it contain a valid string
* length that can be used to resize the buffer.
*/
#define RTStrToLatin1Ex(pszString, cchString, ppsz, cch, pcch) \
RTStrToLatin1ExTag((pszString), (cchString), (ppsz), (cch), (pcch), RTSTR_TAG)
/**
* Translates pszString from UTF-8 to Latin1, allocating the result buffer if
* requested (custom tag).
*
* @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 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 items will be
* allocated to hold the translated string. If a
* buffer was requested it must be freed using
* RTStrFree().
* @param cch The buffer size in bytes. This includes the
* terminator.
* @param pcch Where to store the length of the translated string,
* excluding the terminator. (Optional)
*
* This may be set under some error conditions,
* however, only for VERR_BUFFER_OVERFLOW and
* VERR_NO_STR_MEMORY will it contain a valid string
* length that can be used to resize the buffer.
* @param pszTag Allocation tag used for statistics and such.
*/
RTDECL(int) RTStrToLatin1ExTag(const char *pszString, size_t cchString, char **ppsz, size_t cch, size_t *pcch, const char *pszTag);
/**
* 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 iprt status code
* @returns VERR_INVALID_UTF8_ENCODING if the encoding is invalid.
* @param ppsz The string cursor.
* This is advanced one character forward on failure.
* @param pCp Where to store the unicode code point.
* Stores RTUNICP_INVALID if the encoding is invalid.
*/
RTDECL(int) RTStrGetCpExInternal(const char **ppsz, PRTUNICP pCp);
/**
* Get the unicode code point at the given string position for a string of a
* given length.
*
* @returns iprt status code
* @retval VERR_INVALID_UTF8_ENCODING if the encoding is invalid.
* @retval VERR_END_OF_STRING if *pcch is 0. *pCp is set to RTUNICP_INVALID.
*
* @param ppsz The string.
* @param pcch Pointer to the length of the string. This will be
* decremented by the size of the code point.
* @param pCp Where to store the unicode code point.
* Stores RTUNICP_INVALID if the encoding is invalid.
*/
RTDECL(int) RTStrGetCpNExInternal(const char **ppsz, size_t *pcch, 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
* 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 should not be RTUNICP_INVALID or any other
* character 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.
* This is advanced one character forward on failure.
* @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);
}
/**
* Get the unicode code point at the given string position for a string of a
* given maximum length.
*
* @returns iprt status code.
* @retval VERR_INVALID_UTF8_ENCODING if the encoding is invalid.
* @retval VERR_END_OF_STRING if *pcch is 0. *pCp is set to RTUNICP_INVALID.
*
* @param ppsz Pointer to the string pointer. This will be updated to
* point to the char following the current code point.
* @param pcch Pointer to the maximum string length. This will be
* decremented by the size of the code point found.
* @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 RTStrGetCpNExInternal().
*/
DECLINLINE(int) RTStrGetCpNEx(const char **ppsz, size_t *pcch, PRTUNICP pCp)
{
if (RT_LIKELY(*pcch != 0))
{
const unsigned char uch = **(const unsigned char **)ppsz;
if (!(uch & RT_BIT(7)))
{
(*ppsz)++;
(*pcch)--;
*pCp = uch;
return VINF_SUCCESS;
}
}
return RTStrGetCpNExInternal(ppsz, pcch, pCp);
}
/**
* Get the UTF-8 size in characters of a given Unicode code point.
*
* The code point is expected to be a valid Unicode one, but not necessarily in
* the range supported by UTF-8.
*
* @returns The number of chars (bytes) required to encode the code point, or
* zero if there is no UTF-8 encoding.
* @param CodePoint The unicode code point.
*/
DECLINLINE(size_t) RTStrCpSize(RTUNICP CodePoint)
{
if (CodePoint < 0x00000080)
return 1;
if (CodePoint < 0x00000800)
return 2;
if (CodePoint < 0x00010000)
return 3;
#ifdef RT_USE_RTC_3629
if (CodePoint < 0x00011000)
return 4;
#else
if (CodePoint < 0x00200000)
return 4;
if (CodePoint < 0x04000000)
return 5;
if (CodePoint < 0x7fffffff)
return 6;
#endif
return 0;
}
/**
* 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
* 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 should not be RTUNICP_INVALID or any other
* character 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++ = (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);
/** @page pg_rt_str_format The IPRT Format Strings
*
* IPRT implements most of the commonly used format types and flags with the
* exception of floating point which is completely missing. In addition IPRT
* provides a number of IPRT specific format types for the IPRT typedefs and
* other useful things. Note that several of these extensions are similar to
* \%p and doesn't care much if you try add formating flags/width/precision.
*
*
* Group 0a, The commonly used format types:
* - \%s - Takes a pointer to a zero terminated string (UTF-8) and
* prints it with the optionally adjustment (width, -) and
* length restriction (precision).
* - \%ls - Same as \%s except that the input is UTF-16 (output UTF-8).
* - \%Ls - Same as \%s except that the input is UCS-32 (output UTF-8).
* - \%S - Same as \%s, used to convert to current codeset but this is
* now done by the streams code. Deprecated, use \%s.
* - \%lS - Ditto. Deprecated, use \%ls.
* - \%LS - Ditto. Deprecated, use \%Ls.
* - \%c - Takes a char and prints it.
* - \%d - Takes a signed integer and prints it as decimal. Thousand
* separator (\'), zero padding (0), adjustment (-+), width,
* precision
* - \%i - Same as \%d.
* - \%u - Takes an unsigned integer and prints it as decimal. Thousand
* separator (\'), zero padding (0), adjustment (-+), width,
* precision
* - \%x - Takes an unsigned integer and prints it as lowercased
* hexadecimal. The special hash (\#) flag causes a '0x'
* prefixed to be printed. Zero padding (0), adjustment (-+),
* width, precision.
* - \%X - Same as \%x except that it is uppercased.
* - \%o - Takes an unsigned (?) integer and prints it as octal. Zero
* padding (0), adjustment (-+), width, precision.
* - \%p - Takes a pointer (void technically) and prints it. Zero
* padding (0), adjustment (-+), width, precision.
*
* The \%d, \%i, \%u, \%x, \%X and \%o format types support the following
* argument type specifiers:
* - \%ll - long long (uint64_t).
* - \%L - long long (uint64_t).
* - \%l - long (uint32_t, uint64_t)
* - \%h - short (int16_t).
* - \%hh - char (int8_t).
* - \%H - char (int8_t).
* - \%z - size_t.
* - \%j - intmax_t (int64_t).
* - \%t - ptrdiff_t.
* The type in parentheses is typical sizes, however when printing those types
* you are better off using the special group 2 format types below (\%RX32 and
* such).
*
*
* Group 0b, IPRT format tricks:
* - %M - Replaces the format string, takes a string pointer.
* - %N - Nested formatting, takes a pointer to a format string
* followed by the pointer to a va_list variable. The va_list
* variable will not be modified and the caller must do va_end()
* on it. Make sure the va_list variable is NOT in a parameter
* list or some gcc versions/targets may get it all wrong.
*
*
* Group 1, the basic runtime typedefs (excluding those which obviously are
* pointer):
* - \%RTbool - Takes a bool value and prints 'true', 'false', or '!%d!'.
* - \%RTeic - Takes a #PCRTERRINFO value outputting 'rc: msg',
* or 'rc - msg' with the \# flag.
* - \%RTeim - Takes a #PCRTERRINFO value outputting ': msg', or
* ' - msg' with the \# flag.
* - \%RTfile - Takes a #RTFILE value.
* - \%RTfmode - Takes a #RTFMODE value.
* - \%RTfoff - Takes a #RTFOFF value.
* - \%RTfp16 - Takes a #RTFAR16 value.
* - \%RTfp32 - Takes a #RTFAR32 value.
* - \%RTfp64 - Takes a #RTFAR64 value.
* - \%RTgid - Takes a #RTGID value.
* - \%RTino - Takes a #RTINODE value.
* - \%RTint - Takes a #RTINT value.
* - \%RTiop - Takes a #RTIOPORT value.
* - \%RTldrm - Takes a #RTLDRMOD value.
* - \%RTmac - Takes a #PCRTMAC pointer.
* - \%RTnaddr - Takes a #PCRTNETADDR value.
* - \%RTnaipv4 - Takes a #RTNETADDRIPV4 value.
* - \%RTnaipv6 - Takes a #PCRTNETADDRIPV6 value.
* - \%RTnthrd - Takes a #RTNATIVETHREAD value.
* - \%RTnthrd - Takes a #RTNATIVETHREAD value.
* - \%RTproc - Takes a #RTPROCESS value.
* - \%RTptr - Takes a #RTINTPTR or #RTUINTPTR value (but not void *).
* - \%RTreg - Takes a #RTCCUINTREG value.
* - \%RTsel - Takes a #RTSEL value.
* - \%RTsem - Takes a #RTSEMEVENT, #RTSEMEVENTMULTI, #RTSEMMUTEX, #RTSEMFASTMUTEX, or #RTSEMRW value.
* - \%RTsock - Takes a #RTSOCKET value.
* - \%RTthrd - Takes a #RTTHREAD value.
* - \%RTuid - Takes a #RTUID value.
* - \%RTuint - Takes a #RTUINT value.
* - \%RTunicp - Takes a #RTUNICP value.
* - \%RTutf16 - Takes a #RTUTF16 value.
* - \%RTuuid - Takes a #PCRTUUID and will print the UUID as a string.
* - \%RTxuint - Takes a #RTUINT or #RTINT value, formatting it as hex.
* - \%RGi - Takes a #RTGCINT value.
* - \%RGp - Takes a #RTGCPHYS value.
* - \%RGr - Takes a #RTGCUINTREG value.
* - \%RGu - Takes a #RTGCUINT value.
* - \%RGv - Takes a #RTGCPTR, #RTGCINTPTR or #RTGCUINTPTR value.
* - \%RGx - Takes a #RTGCUINT or #RTGCINT value, formatting it as hex.
* - \%RHi - Takes a #RTHCINT value.
* - \%RHp - Takes a #RTHCPHYS value.
* - \%RHr - Takes a #RTHCUINTREG value.
* - \%RHu - Takes a #RTHCUINT value.
* - \%RHv - Takes a #RTHCPTR, #RTHCINTPTR or #RTHCUINTPTR value.
* - \%RHx - Takes a #RTHCUINT or #RTHCINT value, formatting it as hex.
* - \%RRv - Takes a #RTRCPTR, #RTRCINTPTR or #RTRCUINTPTR value.
* - \%RCi - Takes a #RTINT value.
* - \%RCp - Takes a #RTCCPHYS value.
* - \%RCr - Takes a #RTCCUINTREG value.
* - \%RCu - Takes a #RTUINT value.
* - \%RCv - Takes a #uintptr_t, #intptr_t, void * value.
* - \%RCx - Takes a #RTUINT or #RTINT value, formatting it as hex.
*
*
* Group 2, the generic integer types which are prefered over relying on what
* bit-count a 'long', 'short', or 'long long' has on a platform. This are
* highly prefered for the [u]intXX_t kind of types:
* - \%RI[8|16|32|64] - Signed integer value of the specifed bit count.
* - \%RU[8|16|32|64] - Unsigned integer value of the specifed bit count.
* - \%RX[8|16|32|64] - Hexadecimal integer value of the specifed bit count.
*
*
* Group 3, hex dumpers and other complex stuff which requires more than simple
* formatting:
* - \%Rhxd - Takes a pointer to the memory which is to be dumped in typical
* hex format. Use the precision to specify the length, and the width to
* set the number of bytes per line. Default width and precision is 16.
* - \%RhxD - Same as \%Rhxd, except that it skips duplicate lines.
* - \%Rhxs - Takes a pointer to the memory to be displayed as a hex string,
* i.e. a series of space separated bytes formatted as two digit hex value.
* Use the precision to specify the length. Default length is 16 bytes.
* The width, if specified, is ignored.
* The space separtor can get change to a colon by
* using the ' flag, and removed entirely using \#.
* - \%RhXd - Same as \%Rhxd, but takes an additional uint64_t
* value with the memory start address/offset after
* the memory pointer.
* - \%RhXD - Same as \%RhxD, but takes an additional uint64_t
* value with the memory start address/offset after
* the memory pointer.
* - \%RhXs - Same as \%Rhxs, but takes an additional uint64_t
* value with the memory start address/offset after
* the memory pointer.
*
* - \%Rhcb - Human readable byte size formatting, using
* binary unit prefixes (GiB, MiB and such). Takes a
* 64-bit unsigned integer as input. Does one
* decimal point by default, can do 0-3 via precision
* field. No rounding when calculating fraction.
* The space flag add a space between the value and
* unit.
* - \%RhcB - Same a \%Rhcb only the 'i' is skipped in the unit.
* - \%Rhci - SI variant of \%Rhcb, fraction is rounded.
* - \%Rhub - Human readable number formatting, using
* binary unit prefixes. Takes a 64-bit unsigned
* integer as input. Does one decimal point by
* default, can do 0-3 via precision field. No
* rounding when calculating fraction. The space
* flag add a space between the value and unit.
* - \%RhuB - Same a \%Rhub only the 'i' is skipped in the unit.
* - \%Rhui - SI variant of \%Rhub, fraction is rounded.
*
* - \%Rrc - Takes an integer iprt status code as argument. Will insert the
* status code define corresponding to the iprt status code.
* - \%Rrs - Takes an integer iprt status code as argument. Will insert the
* short description of the specified status code.
* - \%Rrf - Takes an integer iprt status code as argument. Will insert the
* full description of the specified status code.
* Note! Works like \%Rrs when IN_RT_STATIC is defined (so please avoid).
* - \%Rra - Takes an integer iprt status code as argument. Will insert the
* status code define + full description.
* Note! Reduced output when IN_RT_STATIC is defined (so please avoid).
* - \%Rwc - Takes a long Windows error code as argument. Will insert the status
* code define corresponding to the Windows error code.
* - \%Rwf - Takes a long Windows error code as argument. Will insert the
* full description of the specified status code.
* Note! Works like \%Rwc when IN_RT_STATIC is defined.
* - \%Rwa - Takes a long Windows error code as argument. Will insert the
* error code define + full description.
* Note! Reduced output when IN_RT_STATIC is defined (so please avoid).
*
* - \%Rhrc - Takes a COM/XPCOM status code as argument. Will insert the status
* code define corresponding to the Windows error code.
* - \%Rhrf - Takes a COM/XPCOM status code as argument. Will insert the
* full description of the specified status code.
* Note! Works like \%Rhrc when IN_RT_STATIC is
* defined on Windows (so please avoid).
* - \%Rhra - Takes a COM/XPCOM error code as argument. Will insert the
* error code define + full description.
* Note! Reduced output when IN_RT_STATIC is defined on Windows (so please avoid).
*
* - \%Rfn - Pretty printing of a function or method. It drops the
* return code and parameter list.
* - \%Rbn - Prints the base name. For dropping the path in
* order to save space when printing a path name.
*
* - \%lRbs - Same as \%ls except inlut is big endian UTF-16.
*
* On other platforms, \%Rw? simply prints the argument in a form of 0xXXXXXXXX.
*
*
* Group 4, structure dumpers:
* - \%RDtimespec - Takes a PCRTTIMESPEC.
*
*
* Group 5, XML / HTML, JSON and URI escapers:
* - \%RMas - Takes a string pointer (const char *) and outputs
* it as an attribute value with the proper escaping.
* This typically ends up in double quotes.
*
* - \%RMes - Takes a string pointer (const char *) and outputs
* it as an element with the necessary escaping.
*
* - \%RMjs - Takes a string pointer (const char *) and outputs
* it in quotes with proper JSON escaping.
*
* - \%RMpa - Takes a string pointer (const char *) and outputs
* it percent-encoded (RFC-3986). All reserved characters
* are encoded.
*
* - \%RMpf - Takes a string pointer (const char *) and outputs
* it percent-encoded (RFC-3986), form style. This
* means '+' is used to escape space (' ') and '%2B'
* is used to escape '+'.
*
* - \%RMpp - Takes a string pointer (const char *) and outputs
* it percent-encoded (RFC-3986), path style. This
* means '/' will not be escaped.
*
* - \%RMpq - Takes a string pointer (const char *) and outputs
* it percent-encoded (RFC-3986), query style. This
* means '+' will not be escaped.
*
*
* Group 6, CPU Architecture Register dumpers:
* - \%RAx86[reg] - Takes a 64-bit register value if the register is
* 64-bit or smaller. Check the code wrt which
* registers are implemented.
*
*/
#ifndef DECLARED_FNRTSTROUTPUT /* duplicated in iprt/log.h & errcore.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 DECLCALLBACKTYPE(size_t, FNRTSTROUTPUT,(void *pvArg, const char *pachChars, size_t cbChars));
/** Pointer to callback function. */
typedef FNRTSTROUTPUT *PFNRTSTROUTPUT;
#endif
/** @name 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_THOUSAND_SEP 0x0200
#define RTSTR_F_OBFUSCATE_PTR 0x0400
#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) * 8 == 32 ? RTSTR_F_32BIT \
: sizeof(type) * 8 == 64 ? RTSTR_F_64BIT \
: sizeof(type) * 8 == 16 ? RTSTR_F_16BIT \
: sizeof(type) * 8 == 8 ? RTSTR_F_8BIT \
: sizeof(type) * 8 == 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 DECLCALLBACKTYPE(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 Pointer to the format string, @see pg_rt_str_format.
* @param InArgs Argument list.
*/
RTDECL(size_t) RTStrFormatV(PFNRTSTROUTPUT pfnOutput, void *pvArgOutput, PFNSTRFORMAT pfnFormat, void *pvArgFormat,
const char *pszFormat, va_list InArgs) RT_IPRT_FORMAT_ATTR(5, 0);
/**
* 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 Pointer to the format string, @see pg_rt_str_format.
* @param ... Argument list.
*/
RTDECL(size_t) RTStrFormat(PFNRTSTROUTPUT pfnOutput, void *pvArgOutput, PFNSTRFORMAT pfnFormat, void *pvArgFormat,
const char *pszFormat, ...) RT_IPRT_FORMAT_ATTR(5, 6);
/**
* 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, RTSTR_F_XXX.
*/
RTDECL(int) RTStrFormatNumber(char *psz, uint64_t u64Value, unsigned int uiBase, signed int cchWidth, signed int cchPrecision,
unsigned int fFlags);
/**
* Formats an unsigned 8-bit number.
*
* @returns The length of the formatted number or VERR_BUFFER_OVERFLOW.
* @param pszBuf The output buffer.
* @param cbBuf The size of the output buffer.
* @param u8Value The value to format.
* @param uiBase Number representation base.
* @param cchWidth Width.
* @param cchPrecision Precision.
* @param fFlags Flags, RTSTR_F_XXX.
*/
RTDECL(ssize_t) RTStrFormatU8(char *pszBuf, size_t cbBuf, uint8_t u8Value, unsigned int uiBase,
signed int cchWidth, signed int cchPrecision, uint32_t fFlags);
/**
* Formats an unsigned 16-bit number.
*
* @returns The length of the formatted number or VERR_BUFFER_OVERFLOW.
* @param pszBuf The output buffer.
* @param cbBuf The size of the output buffer.
* @param u16Value The value to format.
* @param uiBase Number representation base.
* @param cchWidth Width.
* @param cchPrecision Precision.
* @param fFlags Flags, RTSTR_F_XXX.
*/
RTDECL(ssize_t) RTStrFormatU16(char *pszBuf, size_t cbBuf, uint16_t u16Value, unsigned int uiBase,
signed int cchWidth, signed int cchPrecision, uint32_t fFlags);
/**
* Formats an unsigned 32-bit number.
*
* @returns The length of the formatted number or VERR_BUFFER_OVERFLOW.
* @param pszBuf The output buffer.
* @param cbBuf The size of the output buffer.
* @param u32Value The value to format.
* @param uiBase Number representation base.
* @param cchWidth Width.
* @param cchPrecision Precision.
* @param fFlags Flags, RTSTR_F_XXX.
*/
RTDECL(ssize_t) RTStrFormatU32(char *pszBuf, size_t cbBuf, uint32_t u32Value, unsigned int uiBase,
signed int cchWidth, signed int cchPrecision, uint32_t fFlags);
/**
* Formats an unsigned 64-bit number.
*
* @returns The length of the formatted number or VERR_BUFFER_OVERFLOW.
* @param pszBuf The output buffer.
* @param cbBuf The size of the output buffer.
* @param u64Value The value to format.
* @param uiBase Number representation base.
* @param cchWidth Width.
* @param cchPrecision Precision.
* @param fFlags Flags, RTSTR_F_XXX.
*/
RTDECL(ssize_t) RTStrFormatU64(char *pszBuf, size_t cbBuf, uint64_t u64Value, unsigned int uiBase,
signed int cchWidth, signed int cchPrecision, uint32_t fFlags);
/**
* Formats an unsigned 128-bit number.
*
* @returns The length of the formatted number or VERR_BUFFER_OVERFLOW.
* @param pszBuf The output buffer.
* @param cbBuf The size of the output buffer.
* @param pu128Value The value to format.
* @param uiBase Number representation base.
* @param cchWidth Width.
* @param cchPrecision Precision.
* @param fFlags Flags, RTSTR_F_XXX.
* @remarks The current implementation is limited to base 16 and doesn't do
* width or precision and probably ignores few flags too.
*/
RTDECL(ssize_t) RTStrFormatU128(char *pszBuf, size_t cbBuf, PCRTUINT128U pu128Value, unsigned int uiBase,
signed int cchWidth, signed int cchPrecision, uint32_t fFlags);
/**
* Formats an unsigned 256-bit number.
*
* @returns The length of the formatted number or VERR_BUFFER_OVERFLOW.
* @param pszBuf The output buffer.
* @param cbBuf The size of the output buffer.
* @param pu256Value The value to format.
* @param uiBase Number representation base.
* @param cchWidth Width.
* @param cchPrecision Precision.
* @param fFlags Flags, RTSTR_F_XXX.
* @remarks The current implementation is limited to base 16 and doesn't do
* width or precision and probably ignores few flags too.
*/
RTDECL(ssize_t) RTStrFormatU256(char *pszBuf, size_t cbBuf, PCRTUINT256U pu256Value, unsigned int uiBase,
signed int cchWidth, signed int cchPrecision, uint32_t fFlags);
/**
* Formats an unsigned 512-bit number.
*
* @returns The length of the formatted number or VERR_BUFFER_OVERFLOW.
* @param pszBuf The output buffer.
* @param cbBuf The size of the output buffer.
* @param pu512Value The value to format.
* @param uiBase Number representation base.
* @param cchWidth Width.
* @param cchPrecision Precision.
* @param fFlags Flags, RTSTR_F_XXX.
* @remarks The current implementation is limited to base 16 and doesn't do
* width or precision and probably ignores few flags too.
*/
RTDECL(ssize_t) RTStrFormatU512(char *pszBuf, size_t cbBuf, PCRTUINT512U pu512Value, unsigned int uiBase,
signed int cchWidth, signed int cchPrecision, uint32_t fFlags);
/**
* Formats an 32-bit extended floating point number.
*
* @returns The length of the formatted number or VERR_BUFFER_OVERFLOW.
* @param pszBuf The output buffer.
* @param cbBuf The size of the output buffer.
* @param pr32Value The value to format.
* @param cchWidth Width.
* @param cchPrecision Precision.
* @param fFlags Flags, RTSTR_F_XXX.
*/
RTDECL(ssize_t) RTStrFormatR32(char *pszBuf, size_t cbBuf, PCRTFLOAT32U pr32Value, signed int cchWidth,
signed int cchPrecision, uint32_t fFlags);
/**
* Formats an 64-bit extended floating point number.
*
* @returns The length of the formatted number or VERR_BUFFER_OVERFLOW.
* @param pszBuf The output buffer.
* @param cbBuf The size of the output buffer.
* @param pr64Value The value to format.
* @param cchWidth Width.
* @param cchPrecision Precision.
* @param fFlags Flags, RTSTR_F_XXX.
*/
RTDECL(ssize_t) RTStrFormatR64(char *pszBuf, size_t cbBuf, PCRTFLOAT64U pr64Value, signed int cchWidth,
signed int cchPrecision, uint32_t fFlags);
#if !defined(__IBMCPP__) && !defined(__IBMC__)
/**
* Formats an 80-bit extended floating point number.
*
* @returns The length of the formatted number or VERR_BUFFER_OVERFLOW.
* @param pszBuf The output buffer.
* @param cbBuf The size of the output buffer.
* @param pr80Value The value to format.
* @param cchWidth Width.
* @param cchPrecision Precision.
* @param fFlags Flags, RTSTR_F_XXX.
*/
RTDECL(ssize_t) RTStrFormatR80(char *pszBuf, size_t cbBuf, PCRTFLOAT80U pr80Value, signed int cchWidth,
signed int cchPrecision, uint32_t fFlags);
/**
* Formats an 80-bit extended floating point number, version 2.
*
* @returns The length of the formatted number or VERR_BUFFER_OVERFLOW.
* @param pszBuf The output buffer.
* @param cbBuf The size of the output buffer.
* @param pr80Value The value to format.
* @param cchWidth Width.
* @param cchPrecision Precision.
* @param fFlags Flags, RTSTR_F_XXX.
*/
RTDECL(ssize_t) RTStrFormatR80u2(char *pszBuf, size_t cbBuf, PCRTFLOAT80U2 pr80Value, signed int cchWidth,
signed int cchPrecision, uint32_t fFlags);
#endif /* uint16_t bitfields doesn't work */
/**
* Callback for formatting a type.
*
* This is registered using the RTStrFormatTypeRegister function and will
* be called during string formatting to handle the specified %R[type].
* The argument for this format type is assumed to be a pointer and it's
* passed in the @a pvValue argument.
*
* @returns Length of the formatted output.
* @param pfnOutput Output worker.
* @param pvArgOutput Argument to the output worker.
* @param pszType The type name.
* @param pvValue The argument value.
* @param cchWidth Width.
* @param cchPrecision Precision.
* @param fFlags Flags (NTFS_*).
* @param pvUser The user argument.
*/
typedef DECLCALLBACKTYPE(size_t, FNRTSTRFORMATTYPE,(PFNRTSTROUTPUT pfnOutput, void *pvArgOutput,
const char *pszType, void const *pvValue,
int cchWidth, int cchPrecision, unsigned fFlags,
void *pvUser));
/** Pointer to a FNRTSTRFORMATTYPE. */
typedef FNRTSTRFORMATTYPE *PFNRTSTRFORMATTYPE;
/**
* Register a format handler for a type.
*
* The format handler is used to handle '%R[type]' format types, where the argument
* in the vector is a pointer value (a bit restrictive, but keeps it simple).
*
* The caller must ensure that no other thread will be making use of any of
* the dynamic formatting type facilities simultaneously with this call.
*
* @returns IPRT status code.
* @retval VINF_SUCCESS on success.
* @retval VERR_ALREADY_EXISTS if the type has already been registered.
* @retval VERR_TOO_MANY_OPEN_FILES if all the type slots has been allocated already.
*
* @param pszType The type name.
* @param pfnHandler The handler address. See FNRTSTRFORMATTYPE for details.
* @param pvUser The user argument to pass to the handler. See RTStrFormatTypeSetUser
* for how to update this later.
*/
RTDECL(int) RTStrFormatTypeRegister(const char *pszType, PFNRTSTRFORMATTYPE pfnHandler, void *pvUser);
/**
* Deregisters a format type.
*
* The caller must ensure that no other thread will be making use of any of
* the dynamic formatting type facilities simultaneously with this call.
*
* @returns IPRT status code.
* @retval VINF_SUCCESS on success.
* @retval VERR_FILE_NOT_FOUND if not found.
*
* @param pszType The type to deregister.
*/
RTDECL(int) RTStrFormatTypeDeregister(const char *pszType);
/**
* Sets the user argument for a type.
*
* This can be used if a user argument needs relocating in GC.
*
* @returns IPRT status code.
* @retval VINF_SUCCESS on success.
* @retval VERR_FILE_NOT_FOUND if not found.
*
* @param pszType The type to update.
* @param pvUser The new user argument value.
*/
RTDECL(int) RTStrFormatTypeSetUser(const char *pszType, void *pvUser);
/**
* String printf.
*
* @returns The length of the returned string (in pszBuffer) excluding the
* terminator.
* @param pszBuffer Output buffer.
* @param cchBuffer Size of the output buffer.
* @param pszFormat Pointer to the format string, @see pg_rt_str_format.
* @param args The format argument.
*
* @deprecated Use RTStrPrintf2V! Problematic return value on overflow.
*/
RTDECL(size_t) RTStrPrintfV(char *pszBuffer, size_t cchBuffer, const char *pszFormat, va_list args) RT_IPRT_FORMAT_ATTR(3, 0);
/**
* String printf.
*
* @returns The length of the returned string (in pszBuffer) excluding the
* terminator.
* @param pszBuffer Output buffer.
* @param cchBuffer Size of the output buffer.
* @param pszFormat Pointer to the format string, @see pg_rt_str_format.
* @param ... The format argument.
*
* @deprecated Use RTStrPrintf2! Problematic return value on overflow.
*/
RTDECL(size_t) RTStrPrintf(char *pszBuffer, size_t cchBuffer, const char *pszFormat, ...) RT_IPRT_FORMAT_ATTR(3, 4);
/**
* String printf with custom formatting.
*
* @returns The length of the returned string (in pszBuffer) excluding the
* terminator.
* @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 Pointer to the format string, @see pg_rt_str_format.
* @param args The format argument.
*
* @deprecated Use RTStrPrintf2ExV! Problematic return value on overflow.
*/
RTDECL(size_t) RTStrPrintfExV(PFNSTRFORMAT pfnFormat, void *pvArg, char *pszBuffer, size_t cchBuffer,
const char *pszFormat, va_list args) RT_IPRT_FORMAT_ATTR(5, 0);
/**
* String printf with custom formatting.
*
* @returns The length of the returned string (in pszBuffer) excluding the
* terminator.
* @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 Pointer to the format string, @see pg_rt_str_format.
* @param ... The format argument.
*
* @deprecated Use RTStrPrintf2Ex! Problematic return value on overflow.
*/
RTDECL(size_t) RTStrPrintfEx(PFNSTRFORMAT pfnFormat, void *pvArg, char *pszBuffer, size_t cchBuffer,
const char *pszFormat, ...) RT_IPRT_FORMAT_ATTR(5, 6);
/**
* String printf, version 2.
*
* @returns On success, positive count of formatted character excluding the
* terminator. On buffer overflow, negative number giving the required
* buffer size (including terminator char).
*
* @param pszBuffer Output buffer.
* @param cbBuffer Size of the output buffer.
* @param pszFormat Pointer to the format string, @see pg_rt_str_format.
* @param args The format argument.
*/
RTDECL(ssize_t) RTStrPrintf2V(char *pszBuffer, size_t cbBuffer, const char *pszFormat, va_list args) RT_IPRT_FORMAT_ATTR(3, 0);
/**
* String printf, version 2.
*
* @returns On success, positive count of formatted character excluding the
* terminator. On buffer overflow, negative number giving the required
* buffer size (including terminator char).
*
* @param pszBuffer Output buffer.
* @param cbBuffer Size of the output buffer.
* @param pszFormat Pointer to the format string, @see pg_rt_str_format.
* @param ... The format argument.
*/
RTDECL(ssize_t) RTStrPrintf2(char *pszBuffer, size_t cbBuffer, const char *pszFormat, ...) RT_IPRT_FORMAT_ATTR(3, 4);
/**
* String printf with custom formatting, version 2.
*
* @returns On success, positive count of formatted character excluding the
* terminator. On buffer overflow, negative number giving the required
* buffer size (including terminator char).
*
* @param pfnFormat Pointer to handler function for the custom formats.
* @param pvArg Argument to the pfnFormat function.
* @param pszBuffer Output buffer.
* @param cbBuffer Size of the output buffer.
* @param pszFormat Pointer to the format string, @see pg_rt_str_format.
* @param args The format argument.
*/
RTDECL(ssize_t) RTStrPrintf2ExV(PFNSTRFORMAT pfnFormat, void *pvArg, char *pszBuffer, size_t cbBuffer,
const char *pszFormat, va_list args) RT_IPRT_FORMAT_ATTR(5, 0);
/**
* String printf with custom formatting, version 2.
*
* @returns On success, positive count of formatted character excluding the
* terminator. On buffer overflow, negative number giving the required
* buffer size (including terminator char).
*
* @param pfnFormat Pointer to handler function for the custom formats.
* @param pvArg Argument to the pfnFormat function.
* @param pszBuffer Output buffer.
* @param cbBuffer Size of the output buffer.
* @param pszFormat Pointer to the format string, @see pg_rt_str_format.
* @param ... The format argument.
*/
RTDECL(ssize_t) RTStrPrintf2Ex(PFNSTRFORMAT pfnFormat, void *pvArg, char *pszBuffer, size_t cbBuffer,
const char *pszFormat, ...) RT_IPRT_FORMAT_ATTR(5, 6);
/**
* Allocating string printf (default tag).
*
* @returns The length of the string in the returned *ppszBuffer excluding the
* terminator.
* @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 Pointer to the format string, @see pg_rt_str_format.
* @param args The format argument.
*/
#define RTStrAPrintfV(ppszBuffer, pszFormat, args) RTStrAPrintfVTag((ppszBuffer), (pszFormat), (args), RTSTR_TAG)
/**
* Allocating string printf (custom tag).
*
* @returns The length of the string in the returned *ppszBuffer excluding the
* terminator.
* @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 Pointer to the format string, @see pg_rt_str_format.
* @param args The format argument.
* @param pszTag Allocation tag used for statistics and such.
*/
RTDECL(int) RTStrAPrintfVTag(char **ppszBuffer, const char *pszFormat, va_list args, const char *pszTag) RT_IPRT_FORMAT_ATTR(2, 0);
/**
* Allocating string printf.
*
* @returns The length of the string in the returned *ppszBuffer excluding the
* terminator.
* @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 Pointer to the format string, @see pg_rt_str_format.
* @param ... The format argument.
*/
DECLINLINE(int) RT_IPRT_FORMAT_ATTR(2, 3) RTStrAPrintf(char **ppszBuffer, const char *pszFormat, ...)
{
int cbRet;
va_list va;
va_start(va, pszFormat);
cbRet = RTStrAPrintfVTag(ppszBuffer, pszFormat, va, RTSTR_TAG);
va_end(va);
return cbRet;
}
/**
* Allocating string printf (custom tag).
*
* @returns The length of the string in the returned *ppszBuffer excluding the
* terminator.
* @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 pszTag Allocation tag used for statistics and such.
* @param pszFormat Pointer to the format string, @see pg_rt_str_format.
* @param ... The format argument.
*/
DECLINLINE(int) RT_IPRT_FORMAT_ATTR(3, 4) RTStrAPrintfTag(char **ppszBuffer, const char *pszTag, const char *pszFormat, ...)
{
int cbRet;
va_list va;
va_start(va, pszFormat);
cbRet = RTStrAPrintfVTag(ppszBuffer, pszFormat, va, pszTag);
va_end(va);
return cbRet;
}
/**
* Allocating string printf, version 2.
*
* @returns Formatted string. Use RTStrFree() to free it. NULL when out of
* memory.
* @param pszFormat Pointer to the format string, @see pg_rt_str_format.
* @param args The format argument.
*/
#define RTStrAPrintf2V(pszFormat, args) RTStrAPrintf2VTag((pszFormat), (args), RTSTR_TAG)
/**
* Allocating string printf, version 2.
*
* @returns Formatted string. Use RTStrFree() to free it. NULL when out of
* memory.
* @param pszFormat Pointer to the format string, @see pg_rt_str_format.
* @param args The format argument.
* @param pszTag Allocation tag used for statistics and such.
*/
RTDECL(char *) RTStrAPrintf2VTag(const char *pszFormat, va_list args, const char *pszTag) RT_IPRT_FORMAT_ATTR(1, 0);
/**
* Allocating string printf, version 2 (default tag).
*
* @returns Formatted string. Use RTStrFree() to free it. NULL when out of
* memory.
* @param pszFormat Pointer to the format string, @see pg_rt_str_format.
* @param ... The format argument.
*/
DECLINLINE(char *) RT_IPRT_FORMAT_ATTR(1, 2) RTStrAPrintf2(const char *pszFormat, ...)
{
char *pszRet;
va_list va;
va_start(va, pszFormat);
pszRet = RTStrAPrintf2VTag(pszFormat, va, RTSTR_TAG);
va_end(va);
return pszRet;
}
/**
* Allocating string printf, version 2 (custom tag).
*
* @returns Formatted string. Use RTStrFree() to free it. NULL when out of
* memory.
* @param pszTag Allocation tag used for statistics and such.
* @param pszFormat Pointer to the format string, @see pg_rt_str_format.
* @param ... The format argument.
*/
DECLINLINE(char *) RT_IPRT_FORMAT_ATTR(2, 3) RTStrAPrintf2Tag(const char *pszTag, const char *pszFormat, ...)
{
char *pszRet;
va_list va;
va_start(va, pszFormat);
pszRet = RTStrAPrintf2VTag(pszFormat, va, pszTag);
va_end(va);
return pszRet;
}
/**
* 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);
/**
* String copy with overflow handling.
*
* @retval VINF_SUCCESS on success.
* @retval VERR_BUFFER_OVERFLOW if the destination buffer is too small. The
* buffer will contain as much of the string as it can hold, fully
* terminated.
*
* @param pszDst The destination buffer.
* @param cbDst The size of the destination buffer (in bytes).
* @param pszSrc The source string. NULL is not OK.
*/
RTDECL(int) RTStrCopy(char *pszDst, size_t cbDst, const char *pszSrc);
/**
* String copy with overflow handling.
*
* @retval VINF_SUCCESS on success.
* @retval VERR_BUFFER_OVERFLOW if the destination buffer is too small. The
* buffer will contain as much of the string as it can hold, fully
* terminated.
*
* @param pszDst The destination buffer.
* @param cbDst The size of the destination buffer (in bytes).
* @param pszSrc The source string. NULL is not OK.
* @param cchSrcMax The maximum number of chars (not code points) to
* copy from the source string, not counting the
* terminator as usual.
*/
RTDECL(int) RTStrCopyEx(char *pszDst, size_t cbDst, const char *pszSrc, size_t cchSrcMax);
/**
* String copy with overflow handling and buffer advancing.
*
* @retval VINF_SUCCESS on success.
* @retval VERR_BUFFER_OVERFLOW if the destination buffer is too small. The
* buffer will contain as much of the string as it can hold, fully
* terminated.
*
* @param ppszDst Pointer to the destination buffer pointer.
* This will be advanced to the end of the copied
* bytes (points at the terminator). This is also
* updated on overflow.
* @param pcbDst Pointer to the destination buffer size
* variable. This will be updated in accord with
* the buffer pointer.
* @param pszSrc The source string. NULL is not OK.
*/
RTDECL(int) RTStrCopyP(char **ppszDst, size_t *pcbDst, const char *pszSrc);
/**
* String copy with overflow handling.
*
* @retval VINF_SUCCESS on success.
* @retval VERR_BUFFER_OVERFLOW if the destination buffer is too small. The
* buffer will contain as much of the string as it can hold, fully
* terminated.
*
* @param ppszDst Pointer to the destination buffer pointer.
* This will be advanced to the end of the copied
* bytes (points at the terminator). This is also
* updated on overflow.
* @param pcbDst Pointer to the destination buffer size
* variable. This will be updated in accord with
* the buffer pointer.
* @param pszSrc The source string. NULL is not OK.
* @param cchSrcMax The maximum number of chars (not code points) to
* copy from the source string, not counting the
* terminator as usual.
*/
RTDECL(int) RTStrCopyPEx(char **ppszDst, size_t *pcbDst, const char *pszSrc, size_t cchSrcMax);
/**
* String concatenation with overflow handling.
*
* @retval VINF_SUCCESS on success.
* @retval VERR_BUFFER_OVERFLOW if the destination buffer is too small. The
* buffer will contain as much of the string as it can hold, fully
* terminated.
*
* @param pszDst The destination buffer.
* @param cbDst The size of the destination buffer (in bytes).
* @param pszSrc The source string. NULL is not OK.
*/
RTDECL(int) RTStrCat(char *pszDst, size_t cbDst, const char *pszSrc);
/**
* String concatenation with overflow handling.
*
* @retval VINF_SUCCESS on success.
* @retval VERR_BUFFER_OVERFLOW if the destination buffer is too small. The
* buffer will contain as much of the string as it can hold, fully
* terminated.
*
* @param pszDst The destination buffer.
* @param cbDst The size of the destination buffer (in bytes).
* @param pszSrc The source string. NULL is not OK.
* @param cchSrcMax The maximum number of chars (not code points) to
* copy from the source string, not counting the
* terminator as usual.
*/
RTDECL(int) RTStrCatEx(char *pszDst, size_t cbDst, const char *pszSrc, size_t cchSrcMax);
/**
* String concatenation with overflow handling.
*
* @retval VINF_SUCCESS on success.
* @retval VERR_BUFFER_OVERFLOW if the destination buffer is too small. The
* buffer will contain as much of the string as it can hold, fully
* terminated.
*
* @param ppszDst Pointer to the destination buffer pointer.
* This will be advanced to the end of the copied
* bytes (points at the terminator). This is also
* updated on overflow.
* @param pcbDst Pointer to the destination buffer size
* variable. This will be updated in accord with
* the buffer pointer.
* @param pszSrc The source string. NULL is not OK.
*/
RTDECL(int) RTStrCatP(char **ppszDst, size_t *pcbDst, const char *pszSrc);
/**
* String concatenation with overflow handling and buffer advancing.
*
* @retval VINF_SUCCESS on success.
* @retval VERR_BUFFER_OVERFLOW if the destination buffer is too small. The
* buffer will contain as much of the string as it can hold, fully
* terminated.
*
* @param ppszDst Pointer to the destination buffer pointer.
* This will be advanced to the end of the copied
* bytes (points at the terminator). This is also
* updated on overflow.
* @param pcbDst Pointer to the destination buffer size
* variable. This will be updated in accord with
* the buffer pointer.
* @param pszSrc The source string. NULL is not OK.
* @param cchSrcMax The maximum number of chars (not code points) to
* copy from the source string, not counting the
* terminator as usual.
*/
RTDECL(int) RTStrCatPEx(char **ppszDst, size_t *pcbDst, const char *pszSrc, size_t cchSrcMax);
/**
* Performs a case sensitive string compare between two UTF-8 strings.
*
* Encoding errors are ignored by the current implementation. So, the only
* difference between this and the CRT strcmp function is the handling of
* NULL arguments.
*
* @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. Null is allowed.
* @param psz2 Second UTF-8 string. Null is allowed.
*/
RTDECL(int) RTStrCmp(const char *psz1, const char *psz2);
/**
* Performs a case sensitive string compare between two UTF-8 strings, given
* a maximum string length.
*
* Encoding errors are ignored by the current implementation. So, the only
* difference between this and the CRT strncmp function is the handling of
* NULL arguments.
*
* @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. Null is allowed.
* @param psz2 Second UTF-8 string. Null is allowed.
* @param cchMax The maximum string length
*/
RTDECL(int) RTStrNCmp(const char *psz1, const char *psz2, size_t cchMax);
/**
* 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.
*
* The result is the difference between the mismatching codepoints after they
* both have been lower cased.
*
* If the string encoding is invalid the function will assert (strict builds)
* and use RTStrCmp for the remainder of the string.
*
* @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. Null is allowed.
* @param psz2 Second UTF-8 string. Null is allowed.
*/
RTDECL(int) RTStrICmp(const char *psz1, const char *psz2);
/**
* Performs a case insensitive string compare between two UTF-8 strings, given a
* maximum string length.
*
* 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.
*
* The result is the difference between the mismatching codepoints after they
* both have been lower cased.
*
* If the string encoding is invalid the function will assert (strict builds)
* and use RTStrNCmp for the remainder of the string.
*
* @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. Null is allowed.
* @param psz2 Second UTF-8 string. Null is allowed.
* @param cchMax Maximum string length
*/
RTDECL(int) RTStrNICmp(const char *psz1, const char *psz2, size_t cchMax);
/**
* Performs a case insensitive string compare between a UTF-8 string and a 7-bit
* ASCII string.
*
* This is potentially faster than RTStrICmp and drags in less dependencies. It
* is really handy for hardcoded inputs.
*
* If the string encoding is invalid the function will assert (strict builds)
* and use RTStrCmp for the remainder of the string.
*
* @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. Null is allowed.
* @param psz2 Second string, 7-bit ASCII. Null is allowed.
* @sa RTStrICmp, RTUtf16ICmpAscii
*/
RTDECL(int) RTStrICmpAscii(const char *psz1, const char *psz2);
/**
* Performs a case insensitive string compare between a UTF-8 string and a 7-bit
* ASCII string, given a maximum string length.
*
* This is potentially faster than RTStrNICmp and drags in less dependencies.
* It is really handy for hardcoded inputs.
*
* If the string encoding is invalid the function will assert (strict builds)
* and use RTStrNCmp for the remainder of the string.
*
* @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. Null is allowed.
* @param psz2 Second string, 7-bit ASCII. Null is allowed.
* @param cchMax Maximum string length
* @sa RTStrNICmp, RTUtf16NICmpAscii
*/
RTDECL(int) RTStrNICmpAscii(const char *psz1, const char *psz2, size_t cchMax);
/**
* Checks whether @a pszString starts with @a pszStart.
*
* @returns true / false.
* @param pszString The string to check.
* @param pszStart The start string to check for.
*/
RTDECL(bool) RTStrStartsWith(const char *pszString, const char *pszStart);
/**
* Checks whether @a pszString starts with @a pszStart, case insensitive.
*
* @returns true / false.
* @param pszString The string to check.
* @param pszStart The start string to check for.
*/
RTDECL(bool) RTStrIStartsWith(const char *pszString, const char *pszStart);
/**
* Splits a string buffer with a given separator into separate strings.
* If no separators are found, no strings are returned. Consequtive separators will be skipped.
*
* @returns iprt status code.
* @param pcszStrings String buffer to split.
* @param cbStrings Size (in bytes) of string buffer to split, including terminator.
* @param pcszSeparator Separator to use / find for splitting strings.
* @param ppapszStrings Where to return the allocated string array on success. Needs to be free'd by the caller.
* @param pcStrings Where to return the number of split strings in \a ppapszStrings.
*/
RTDECL(int) RTStrSplit(const char *pcszStrings, size_t cbStrings,
const char *pcszSeparator, char ***ppapszStrings, size_t *pcStrings);
/**
* Locates a case sensitive substring.
*
* If any of the two strings are NULL, then NULL is returned. If the needle is
* an empty string, then the haystack is returned (i.e. matches anything).
*
* @returns Pointer to the first occurrence of the substring if found, NULL if
* not.
*
* @param pszHaystack The string to search.
* @param pszNeedle The substring to search for.
*
* @remarks The difference between this and strstr is the handling of NULL
* pointers.
*/
RTDECL(char *) RTStrStr(const char *pszHaystack, const char *pszNeedle);
/**
* Locates a case insensitive substring.
*
* If any of the two strings are NULL, then NULL is returned. If the needle is
* an empty string, then the haystack is returned (i.e. matches anything).
*
* @returns Pointer to the first occurrence of the substring if found, NULL if
* not.
*
* @param pszHaystack The string to search.
* @param pszNeedle The substring to search for.
*
*/
RTDECL(char *) RTStrIStr(const char *pszHaystack, const char *pszNeedle);
/**
* Converts the string to lower case.
*
* @returns Pointer to the converted string.
* @param psz The string to convert.
*/
RTDECL(char *) RTStrToLower(char *psz);
/**
* Converts the string to upper case.
*
* @returns Pointer to the converted string.
* @param psz The string to convert.
*/
RTDECL(char *) RTStrToUpper(char *psz);
/**
* Checks if the string is case foldable, i.e. whether it would change if
* subject to RTStrToLower or RTStrToUpper.
*
* @returns true / false
* @param psz The string in question.
*/
RTDECL(bool) RTStrIsCaseFoldable(const char *psz);
/**
* Checks if the string is upper cased (no lower case chars in it).
*
* @returns true / false
* @param psz The string in question.
*/
RTDECL(bool) RTStrIsUpperCased(const char *psz);
/**
* Checks if the string is lower cased (no upper case chars in it).
*
* @returns true / false
* @param psz The string in question.
*/
RTDECL(bool) RTStrIsLowerCased(const char *psz);
/**
* Find the length of a zero-terminated byte string, given
* a max string length.
*
* See also RTStrNLenEx.
*
* @returns The string length or cbMax. The returned length does not include
* the zero terminator if it was found.
*
* @param pszString The string.
* @param cchMax The max string length.
*/
RTDECL(size_t) RTStrNLen(const char *pszString, size_t cchMax);
/**
* Find the length of a zero-terminated byte string, given
* a max string length.
*
* See also RTStrNLen.
*
* @returns IPRT status code.
* @retval VINF_SUCCESS if the string has a length less than cchMax.
* @retval VERR_BUFFER_OVERFLOW if the end of the string wasn't found
* before cchMax was reached.
*
* @param pszString The string.
* @param cchMax The max string length.
* @param pcch Where to store the string length excluding the
* terminator. This is set to cchMax if the terminator
* isn't found.
*/
RTDECL(int) RTStrNLenEx(const char *pszString, size_t cchMax, size_t *pcch);
/** The maximum size argument of a memchr call. */
#define RTSTR_MEMCHR_MAX ((~(size_t)0 >> 1) - 15)
/**
* Find the zero terminator in a string with a limited length.
*
* @returns Pointer to the zero terminator.
* @returns NULL if the zero terminator was not found.
*
* @param pszString The string.
* @param cchMax The max string length. RTSTR_MAX is fine.
*/
RTDECL(char *) RTStrEnd(char const *pszString, size_t cchMax);
/**
* Finds the offset at which a simple character first occurs in a string.
*
* @returns The offset of the first occurence or the terminator offset.
* @param pszHaystack The string to search.
* @param chNeedle The character to search for.
*/
DECLINLINE(size_t) RTStrOffCharOrTerm(const char *pszHaystack, char chNeedle)
{
const char *psz = pszHaystack;
char ch;
while ( (ch = *psz) != chNeedle
&& ch != '\0')
psz++;
return (size_t)(psz - pszHaystack);
}
/**
* Matches a simple string pattern.
*
* @returns true if the string matches the pattern, otherwise false.
*
* @param pszPattern The pattern. Special chars are '*' and '?', where the
* asterisk matches zero or more characters and question
* mark matches exactly one character.
* @param pszString The string to match against the pattern.
*/
RTDECL(bool) RTStrSimplePatternMatch(const char *pszPattern, const char *pszString);
/**
* Matches a simple string pattern, neither which needs to be zero terminated.
*
* This is identical to RTStrSimplePatternMatch except that you can optionally
* specify the length of both the pattern and the string. The function will
* stop when it hits a string terminator or either of the lengths.
*
* @returns true if the string matches the pattern, otherwise false.
*
* @param pszPattern The pattern. Special chars are '*' and '?', where the
* asterisk matches zero or more characters and question
* mark matches exactly one character.
* @param cchPattern The pattern length. Pass RTSTR_MAX if you don't know the
* length and wish to stop at the string terminator.
* @param pszString The string to match against the pattern.
* @param cchString The string length. Pass RTSTR_MAX if you don't know the
* length and wish to match up to the string terminator.
*/
RTDECL(bool) RTStrSimplePatternNMatch(const char *pszPattern, size_t cchPattern,
const char *pszString, size_t cchString);
/**
* Matches multiple patterns against a string.
*
* The patterns are separated by the pipe character (|).
*
* @returns true if the string matches the pattern, otherwise false.
*
* @param pszPatterns The patterns.
* @param cchPatterns The lengths of the patterns to use. Pass RTSTR_MAX to
* stop at the terminator.
* @param pszString The string to match against the pattern.
* @param cchString The string length. Pass RTSTR_MAX stop stop at the
* terminator.
* @param poffPattern Offset into the patterns string of the patttern that
* matched. If no match, this will be set to RTSTR_MAX.
* This is optional, NULL is fine.
*/
RTDECL(bool) RTStrSimplePatternMultiMatch(const char *pszPatterns, size_t cchPatterns,
const char *pszString, size_t cchString,
size_t *poffPattern);
/**
* Compares two version strings RTStrICmp fashion.
*
* The version string is split up into sections at punctuation, spaces,
* underscores, dashes and plus signs. The sections are then split up into
* numeric and string sub-sections. Finally, the sub-sections are compared
* in a numeric or case insesntivie fashion depending on what they are.
*
* The following strings are considered to be equal: "1.0.0", "1.00.0", "1.0",
* "1". These aren't: "1.0.0r993", "1.0", "1.0r993", "1.0_Beta3", "1.1"
*
* @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 pszVer1 First version string to compare.
* @param pszVer2 Second version string to compare first version with.
*/
RTDECL(int) RTStrVersionCompare(const char *pszVer1, const char *pszVer2);
/** @defgroup rt_str_conv String To/From Number Conversions
* @{ */
/**
* Converts a string representation of a number to a 64-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 uBaseAndMaxLen The low byte is the base of the representation, the
* upper 24 bits are the max length to parse. If the base
* is zero the function will look for known prefixes before
* defaulting to 10. A max length of zero means no length
* restriction.
* @param pu64 Where to store the converted number. (optional)
*/
RTDECL(int) RTStrToUInt64Ex(const char *pszValue, char **ppszNext, unsigned uBaseAndMaxLen, 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 conversion 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 uBaseAndMaxLen The low byte is the base of the representation, the
* upper 24 bits are the max length to parse. If the base
* is zero the function will look for known prefixes before
* defaulting to 10. A max length of zero means no length
* restriction.
* @param pu64 Where to store the converted number. (optional)
*/
RTDECL(int) RTStrToUInt64Full(const char *pszValue, unsigned uBaseAndMaxLen, 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 uBaseAndMaxLen The low byte is the base of the representation, the
* upper 24 bits are the max length to parse. If the base
* is zero the function will look for known prefixes before
* defaulting to 10. A max length of zero means no length
* restriction.
* @param pu32 Where to store the converted number. (optional)
*/
RTDECL(int) RTStrToUInt32Ex(const char *pszValue, char **ppszNext, unsigned uBaseAndMaxLen, 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 conversion 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 uBaseAndMaxLen The low byte is the base of the representation, the
* upper 24 bits are the max length to parse. If the base
* is zero the function will look for known prefixes before
* defaulting to 10. A max length of zero means no length
* restriction.
* @param pu32 Where to store the converted number. (optional)
*/
RTDECL(int) RTStrToUInt32Full(const char *pszValue, unsigned uBaseAndMaxLen, uint32_t *pu32);
/**
* Converts a string representation of a number to a 32-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 uBaseAndMaxLen The low byte is the base of the representation, the
* upper 24 bits are the max length to parse. If the base
* is zero the function will look for known prefixes before
* defaulting to 10. A max length of zero means no length
* restriction.
* @param pu16 Where to store the converted number. (optional)
*/
RTDECL(int) RTStrToUInt16Ex(const char *pszValue, char **ppszNext, unsigned uBaseAndMaxLen, 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 conversion 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 uBaseAndMaxLen The low byte is the base of the representation, the
* upper 24 bits are the max length to parse. If the base
* is zero the function will look for known prefixes before
* defaulting to 10. A max length of zero means no length
* restriction.
* @param pu16 Where to store the converted number. (optional)
*/
RTDECL(int) RTStrToUInt16Full(const char *pszValue, unsigned uBaseAndMaxLen, 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 uBaseAndMaxLen The low byte is the base of the representation, the
* upper 24 bits are the max length to parse. If the base
* is zero the function will look for known prefixes before
* defaulting to 10. A max length of zero means no length
* restriction.
* @param pu8 Where to store the converted number. (optional)
*/
RTDECL(int) RTStrToUInt8Ex(const char *pszValue, char **ppszNext, unsigned uBaseAndMaxLen, 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 conversion 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 uBaseAndMaxLen The low byte is the base of the representation, the
* upper 24 bits are the max length to parse. If the base
* is zero the function will look for known prefixes before
* defaulting to 10. A max length of zero means no length
* restriction.
* @param pu8 Where to store the converted number. (optional)
*/
RTDECL(int) RTStrToUInt8Full(const char *pszValue, unsigned uBaseAndMaxLen, 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 uBaseAndMaxLen The low byte is the base of the representation, the
* upper 24 bits are the max length to parse. If the base
* is zero the function will look for known prefixes before
* defaulting to 10. A max length of zero means no length
* restriction.
* @param pi64 Where to store the converted number. (optional)
*/
RTDECL(int) RTStrToInt64Ex(const char *pszValue, char **ppszNext, unsigned uBaseAndMaxLen, 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 conversion 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 uBaseAndMaxLen The low byte is the base of the representation, the
* upper 24 bits are the max length to parse. If the base
* is zero the function will look for known prefixes before
* defaulting to 10. A max length of zero means no length
* restriction.
* @param pi64 Where to store the converted number. (optional)
*/
RTDECL(int) RTStrToInt64Full(const char *pszValue, unsigned uBaseAndMaxLen, 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 uBaseAndMaxLen The low byte is the base of the representation, the
* upper 24 bits are the max length to parse. If the base
* is zero the function will look for known prefixes before
* defaulting to 10. A max length of zero means no length
* restriction.
* @param pi32 Where to store the converted number. (optional)
*/
RTDECL(int) RTStrToInt32Ex(const char *pszValue, char **ppszNext, unsigned uBaseAndMaxLen, 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 conversion 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 uBaseAndMaxLen The low byte is the base of the representation, the
* upper 24 bits are the max length to parse. If the base
* is zero the function will look for known prefixes before
* defaulting to 10. A max length of zero means no length
* restriction.
* @param pi32 Where to store the converted number. (optional)
*/
RTDECL(int) RTStrToInt32Full(const char *pszValue, unsigned uBaseAndMaxLen, 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 uBaseAndMaxLen The low byte is the base of the representation, the
* upper 24 bits are the max length to parse. If the base
* is zero the function will look for known prefixes before
* defaulting to 10. A max length of zero means no length
* restriction.
* @param pi16 Where to store the converted number. (optional)
*/
RTDECL(int) RTStrToInt16Ex(const char *pszValue, char **ppszNext, unsigned uBaseAndMaxLen, 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 conversion 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 uBaseAndMaxLen The low byte is the base of the representation, the
* upper 24 bits are the max length to parse. If the base
* is zero the function will look for known prefixes before
* defaulting to 10. A max length of zero means no length
* restriction.
* @param pi16 Where to store the converted number. (optional)
*/
RTDECL(int) RTStrToInt16Full(const char *pszValue, unsigned uBaseAndMaxLen, 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 uBaseAndMaxLen The low byte is the base of the representation, the
* upper 24 bits are the max length to parse. If the base
* is zero the function will look for known prefixes before
* defaulting to 10. A max length of zero means no length
* restriction.
* @param pi8 Where to store the converted number. (optional)
*/
RTDECL(int) RTStrToInt8Ex(const char *pszValue, char **ppszNext, unsigned uBaseAndMaxLen, 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 conversion 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 uBaseAndMaxLen The low byte is the base of the representation, the
* upper 24 bits are the max length to parse. If the base
* is zero the function will look for known prefixes before
* defaulting to 10. A max length of zero means no length
* restriction.
* @param pi8 Where to store the converted number. (optional)
*/
RTDECL(int) RTStrToInt8Full(const char *pszValue, unsigned uBaseAndMaxLen, 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);
/**
* Converts a string to long double floating point, extended edition.
*
* Please note that long double can be double precision, extended precision, or
* quad precision floating point depending on the platform and architecture. See
* RT_COMPILER_WITH_128BIT_LONG_DOUBLE and RT_COMPILER_WITH_80BIT_LONG_DOUBLE.
*
* @returns IPRT status code.
* @retval VERR_NO_DIGITS if no valid digits found.
* @retval VWRN_FLOAT_UNDERFLOW on underflow with denormal/subnormal return
* value
* @retval VERR_FLOAT_UNDERFLOW on underflow, value set to +/- zero.
* @retval VERR_FLOAT_OVERFLOW on overflow, value set to +/- infinity.
* @retval VWRN_TRAILING_CHARS
* @retval VWRN_TRAILING_SPACES
*
* @param pszValue The string to parse.
* @param ppszNext Where to store the pointer to the first char following
* the number. Optional.
* @param cchMax Max number of character to parse. Zero means unlimited.
* @param plrd Where to return the number. Optional.
*
* @note This code isn't entirely perfect yet. It could exhibit rounding
* differences compared to strtold & the compiler, and extreme value
* may overflow/underflow prematurely depending on the build config.
*/
RTDECL(int) RTStrToLongDoubleEx(const char *pszValue, char **ppszNext, size_t cchMax, long double *plrd);
/**
* Converts a string to double precision floating point, extended edition.
*
* @returns IPRT status code.
* @retval VERR_NO_DIGITS if no valid digits found.
* @retval VWRN_FLOAT_UNDERFLOW on underflow with denormal/subnormal return
* value
* @retval VERR_FLOAT_UNDERFLOW on underflow, value set to +/- zero.
* @retval VERR_FLOAT_OVERFLOW on overflow, value set to +/- infinity.
* @retval VWRN_TRAILING_CHARS
* @retval VWRN_TRAILING_SPACES
*
* @param pszValue The string to parse.
* @param ppszNext Where to store the pointer to the first char following
* the number. Optional.
* @param cchMax Max number of character to parse. Zero means unlimited.
* @param prd Where to return the number. Optional.
*
* @note This code isn't entirely perfect yet. It could exhibit rounding
* differences compared to strtold & the compiler, and extreme value
* may overflow/underflow prematurely depending on the build config.
*/
RTDECL(int) RTStrToDoubleEx(const char *pszValue, char **ppszNext, size_t cchMax, double *prd);
/**
* Converts a string to single precision floating point, extended edition.
*
* @returns IPRT status code.
* @retval VERR_NO_DIGITS if no valid digits found.
* @retval VWRN_FLOAT_UNDERFLOW on underflow with denormal/subnormal return
* value
* @retval VERR_FLOAT_UNDERFLOW on underflow, value set to +/- zero.
* @retval VERR_FLOAT_OVERFLOW on overflow, value set to +/- infinity.
* @retval VWRN_TRAILING_CHARS
* @retval VWRN_TRAILING_SPACES
*
* @param pszValue The string to parse.
* @param ppszNext Where to store the pointer to the first char following
* the number. Optional.
* @param cchMax Max number of character to parse. Zero means unlimited.
* @param pr Where to return the number. Optional.
*
* @note This code isn't entirely perfect yet. It could exhibit rounding
* differences compared to strtold & the compiler, and extreme value
* may overflow/underflow prematurely depending on the build config.
*/
RTDECL(int) RTStrToFloatEx(const char *pszValue, char **ppszNext, size_t cchMax, float *pr);
/**
* Gets a long double NaN.
*
* @returns NaN value.
* @param pszTag Optional NaN tag for modifying the NaN value. We
* recognizes a string of hex digits for inserting into the
* fraction part. This may be followed 'quiet' or
* 'signaling', ignoring case and requiring at only the
* first character. The two components may be separated by
* zero or more '_' characters. Any other stuff in the tag
* will be ignored.
*
* If the tag is empty or we cannot grok any of it, we'll
* return a default quiet NaN.
* @param fPositive Whether the NaN value should be positive or negative
* (for what that's worth).
*/
RTDECL(long double) RTStrNanLongDouble(const char *pszTag, bool fPositive);
/**
* Gets a double NaN.
*
* @returns NaN value.
* @param pszTag Optional NaN tag for modifying the NaN value. We
* recognizes a string of hex digits for inserting into the
* fraction part. This may be followed 'quiet' or
* 'signaling', ignoring case and requiring at only the
* first character. The two components may be separated by
* zero or more '_' characters. Any other stuff in the tag
* will be ignored.
*
* If the tag is empty or we cannot grok any of it, we'll
* return a default quiet NaN.
* @param fPositive Whether the NaN value should be positive or negative
* (for what that's worth).
*/
RTDECL(double) RTStrNanDouble(const char *pszTag, bool fPositive);
/**
* Gets a float NaN.
*
* @returns NaN value.
* @param pszTag Optional NaN tag for modifying the NaN value. We
* recognizes a string of hex digits for inserting into the
* fraction part. This may be followed 'quiet' or
* 'signaling', ignoring case and requiring at only the
* first character. The two components may be separated by
* zero or more '_' characters. Any other stuff in the tag
* will be ignored.
*
* If the tag is empty or we cannot grok any of it, we'll
* return a default quiet NaN.
* @param fPositive Whether the NaN value should be positive or negative
* (for what that's worth).
*/
RTDECL(float) RTStrNanFloat(const char *pszTag, bool fPositive);
/**
* Formats a buffer stream as hex bytes.
*
* The default is no separating spaces or line breaks or anything.
*
* @returns IPRT status code.
* @retval VERR_INVALID_POINTER if any of the pointers are wrong.
* @retval VERR_BUFFER_OVERFLOW if the buffer is insufficent to hold the bytes.
*
* @param pszBuf Output string buffer.
* @param cbBuf The size of the output buffer.
* @param pv Pointer to the bytes to stringify.
* @param cb The number of bytes to stringify.
* @param fFlags Combination of RTSTRPRINTHEXBYTES_F_XXX values.
* @sa RTUtf16PrintHexBytes.
*/
RTDECL(int) RTStrPrintHexBytes(char *pszBuf, size_t cbBuf, void const *pv, size_t cb, uint32_t fFlags);
/** @name RTSTRPRINTHEXBYTES_F_XXX - flags for RTStrPrintHexBytes and RTUtf16PritnHexBytes.
* @{ */
/** Upper case hex digits, the default is lower case. */
#define RTSTRPRINTHEXBYTES_F_UPPER RT_BIT(0)
/** Add a space between each group. */
#define RTSTRPRINTHEXBYTES_F_SEP_SPACE RT_BIT(1)
/** Add a colon between each group. */
#define RTSTRPRINTHEXBYTES_F_SEP_COLON RT_BIT(2)
/** @} */
/**
* Converts a string of hex bytes back into binary data.
*
* @returns IPRT status code.
* @retval VERR_INVALID_POINTER if any of the pointers are wrong.
* @retval VERR_BUFFER_OVERFLOW if the string contains too many hex bytes.
* @retval VERR_BUFFER_UNDERFLOW if there aren't enough hex bytes to fill up
* the output buffer.
* @retval VERR_UNEVEN_INPUT if the input contains a half byte.
* @retval VERR_NO_DIGITS
* @retval VWRN_TRAILING_CHARS
* @retval VWRN_TRAILING_SPACES
*
* @param pszHex The string containing the hex bytes.
* @param pv Output buffer.
* @param cb The size of the output buffer.
* @param fFlags RTSTRCONVERTHEXBYTES_F_XXX.
*/
RTDECL(int) RTStrConvertHexBytes(char const *pszHex, void *pv, size_t cb, uint32_t fFlags);
/** @name RTSTRCONVERTHEXBYTES_F_XXX - Flags for RTStrConvertHexBytes() and RTStrConvertHexBytesEx().
* @{ */
/** Accept colon as a byte separator. */
#define RTSTRCONVERTHEXBYTES_F_SEP_COLON RT_BIT(0)
/** @} */
/**
* Converts a string of hex bytes back into binary data, extended version.
*
* @returns IPRT status code.
* @retval VERR_INVALID_POINTER if any of the pointers are wrong.
* @retval VERR_BUFFER_OVERFLOW if the string contains too many hex bytes.
* @retval VERR_BUFFER_UNDERFLOW if there aren't enough hex bytes to fill up
* the output buffer and *pcbReturned is NULL.
* @retval VINF_BUFFER_UNDERFLOW if there aren't enough hex bytes to fill up
* the output buffer and *pcbReturned is not NULL, *pcbReturned holds
* the actual number of bytes.
* @retval VERR_UNEVEN_INPUT if the input contains a half byte.
* @retval VERR_NO_DIGITS
* @retval VWRN_TRAILING_CHARS
* @retval VWRN_TRAILING_SPACES
*
* @param pszHex The string containing the hex bytes.
* @param pv Output buffer.
* @param cb The size of the output buffer.
* @param fFlags RTSTRCONVERTHEXBYTES_F_XXX.
* @param ppszNext Set to point at where we stopped decoding hex bytes.
* Optional.
* @param pcbReturned Where to return the number of bytes found. Optional.
*/
RTDECL(int) RTStrConvertHexBytesEx(char const *pszHex, void *pv, size_t cb, uint32_t fFlags,
const char **ppszNext, size_t *pcbReturned);
/** @} */
/** @defgroup rt_str_space Unique String Space
* @{
*/
/** 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
{
/** Pointer to the left leaf node. Don't touch. */
PRTSTRSPACECORE pLeft;
/** Pointer to the left right node. Don't touch. */
PRTSTRSPACECORE pRight;
/** Pointer to the list of string with the same hash key value. Don't touch. */
PRTSTRSPACECORE pList;
/** Hash key. Don't touch. */
uint32_t Key;
/** 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 collided 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 remove it from.
* @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 get it from.
* @param pszString The string to get.
*/
RTDECL(PRTSTRSPACECORE) RTStrSpaceGet(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 get it from.
* @param pszString The string to get.
* @param cchMax The max string length to evaluate. Passing
* RTSTR_MAX is ok and makes it behave just like
* RTStrSpaceGet.
*/
RTDECL(PRTSTRSPACECORE) RTStrSpaceGetN(PRTSTRSPACE pStrSpace, const char *pszString, size_t cchMax);
/**
* 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 DECLCALLBACKTYPE(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 destroy.
* @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 enumerate.
* @param pfnCallback The callback.
* @param pvUser The user argument.
*/
RTDECL(int) RTStrSpaceEnumerate(PRTSTRSPACE pStrSpace, PFNRTSTRSPACECALLBACK pfnCallback, void *pvUser);
/** @} */
/** @defgroup rt_str_hash Sting hashing
* @{ */
/**
* Hashes the given string using algorithm \#1.
*
* @returns String hash.
* @param pszString The string to hash.
*/
RTDECL(uint32_t) RTStrHash1(const char *pszString);
/**
* Hashes the given string using algorithm \#1.
*
* @returns String hash.
* @param pszString The string to hash.
* @param cchString The max length to hash. Hashing will stop if the
* terminator character is encountered first. Passing
* RTSTR_MAX is fine.
*/
RTDECL(uint32_t) RTStrHash1N(const char *pszString, size_t cchString);
/**
* Hashes the given strings as if they were concatenated using algorithm \#1.
*
* @returns String hash.
* @param cPairs The number of string / length pairs in the
* ellipsis.
* @param ... List of string (const char *) and length
* (size_t) pairs. Passing RTSTR_MAX as the size is
* fine.
*/
RTDECL(uint32_t) RTStrHash1ExN(size_t cPairs, ...);
/**
* Hashes the given strings as if they were concatenated using algorithm \#1.
*
* @returns String hash.
* @param cPairs The number of string / length pairs in the @a va.
* @param va List of string (const char *) and length
* (size_t) pairs. Passing RTSTR_MAX as the size is
* fine.
*/
RTDECL(uint32_t) RTStrHash1ExNV(size_t cPairs, va_list va);
/** @} */
/** @defgroup rt_str_mem Raw memory operations.
*
* @note Following the memchr/memcpy/memcmp/memset tradition and putting these
* in the string.h header rather than in the mem.h one.
*
* @{ */
/**
* Searches @a pvHaystack for a 16-bit sized and aligned @a uNeedle.
*
* @returns Pointer to the first hit if found, NULL if not found.
* @param pvHaystack The memory to search.
* @param uNeedle The 16-bit value to find.
* @param cbHaystack Size of the memory to search.
* @sa memchr, RTStrMemFind32, RTStrMemFind64
*/
RTDECL(uint16_t *) RTStrMemFind16(const void *pvHaystack, uint16_t uNeedle, size_t cbHaystack);
/**
* Searches @a pvHaystack for a 32-bit sized and aligned @a uNeedle.
*
* @returns Pointer to the first hit if found, NULL if not found.
* @param pvHaystack The memory to search.
* @param uNeedle The 32-bit value to find.
* @param cbHaystack Size of the memory to search.
* @sa memchr, RTStrMemFind16, RTStrMemFind64
*/
RTDECL(uint32_t *) RTStrMemFind32(const void *pvHaystack, uint32_t uNeedle, size_t cbHaystack);
/**
* Searches @a pvHaystack for a 64-bit sized and aligned @a uNeedle.
*
* @returns Pointer to the first hit if found, NULL if not found.
* @param pvHaystack The memory to search.
* @param uNeedle The 64-bit value to find.
* @param cbHaystack Size of the memory to search.
* @sa memchr, RTStrMemFind16, RTStrMemFind32
*/
RTDECL(uint64_t *) RTStrMemFind64(const void *pvHaystack, uint64_t uNeedle, size_t cbHaystack);
/** @} */
/** @} */
RT_C_DECLS_END
#endif /* !IPRT_INCLUDED_string_h */
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