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/*
* Copyright 2010-2017 Branimir Karadzic. All rights reserved.
* License: https://github.com/bkaradzic/bx#license-bsd-2-clause
*/
#include <bx/allocator.h>
#include <bx/hash.h>
#include <bx/readerwriter.h>
#include <bx/string.h>
#if !BX_CRT_NONE
# include <stdio.h> // vsnprintf, vsnwprintf
#endif // !BX_CRT_NONE
namespace bx
{
bool isSpace(char _ch)
{
return ' ' == _ch
|| '\t' == _ch
|| '\n' == _ch
|| '\v' == _ch
|| '\f' == _ch
|| '\r' == _ch
;
}
bool isUpper(char _ch)
{
return _ch >= 'A' && _ch <= 'Z';
}
bool isLower(char _ch)
{
return _ch >= 'a' && _ch <= 'z';
}
bool isAlpha(char _ch)
{
return isLower(_ch) || isUpper(_ch);
}
bool isNumeric(char _ch)
{
return _ch >= '0' && _ch <= '9';
}
bool isAlphaNum(char _ch)
{
return isAlpha(_ch) || isNumeric(_ch);
}
bool isPrint(char _ch)
{
return isAlphaNum(_ch) || isSpace(_ch);
}
char toLower(char _ch)
{
return _ch + (isUpper(_ch) ? 0x20 : 0);
}
char toUpper(char _ch)
{
return _ch - (isLower(_ch) ? 0x20 : 0);
}
bool toBool(const char* _str)
{
char ch = toLower(_str[0]);
return ch == 't' || ch == '1';
}
int32_t strncmp(const char* _lhs, const char* _rhs, size_t _max)
{
for (
; 0 < _max && *_lhs == *_rhs
; ++_lhs, ++_rhs, --_max
)
{
if (*_lhs == '\0'
|| *_rhs == '\0')
{
break;
}
}
return 0 == _max ? 0 : *_lhs - *_rhs;
}
int32_t strincmp(const char* _lhs, const char* _rhs, size_t _max)
{
for (
; 0 < _max && toLower(*_lhs) == toLower(*_rhs)
; ++_lhs, ++_rhs, --_max
)
{
if (*_lhs == '\0'
|| *_rhs == '\0')
{
break;
}
}
return 0 == _max ? 0 : *_lhs - *_rhs;
}
size_t strnlen(const char* _str, size_t _max)
{
const char* ptr;
for (ptr = _str; 0 < _max && *ptr != '\0'; ++ptr, --_max) {};
return ptr - _str;
}
size_t strlncpy(char* _dst, size_t _dstSize, const char* _src, size_t _num)
{
BX_CHECK(NULL != _dst, "_dst can't be NULL!");
BX_CHECK(NULL != _src, "_src can't be NULL!");
BX_CHECK(0 < _dstSize, "_dstSize can't be 0!");
const size_t len = strnlen(_src, _num);
const size_t max = _dstSize-1;
const size_t num = (len < max ? len : max);
memcpy(_dst, _src, num);
_dst[num] = '\0';
return num;
}
size_t strlncat(char* _dst, size_t _dstSize, const char* _src, size_t _num)
{
BX_CHECK(NULL != _dst, "_dst can't be NULL!");
BX_CHECK(NULL != _src, "_src can't be NULL!");
BX_CHECK(0 < _dstSize, "_dstSize can't be 0!");
const size_t max = _dstSize;
const size_t len = strnlen(_dst, max);
return strlncpy(&_dst[len], max-len, _src, _num);
}
const char* strnchr(const char* _str, char _ch, size_t _max)
{
for (size_t ii = 0, len = strnlen(_str, _max); ii < len; ++ii)
{
if (_str[ii] == _ch)
{
return &_str[ii];
}
}
return NULL;
}
const char* strnrchr(const char* _str, char _ch, size_t _max)
{
for (size_t ii = strnlen(_str, _max); 0 < ii; --ii)
{
if (_str[ii] == _ch)
{
return &_str[ii];
}
}
return NULL;
}
const char* strnstr(const char* _str, const char* _find, size_t _max)
{
const char* ptr = _str;
size_t stringLen = strnlen(_str, _max);
const size_t findLen = strnlen(_find);
for (; stringLen >= findLen; ++ptr, --stringLen)
{
// Find start of the string.
while (*ptr != *_find)
{
++ptr;
--stringLen;
// Search pattern lenght can't be longer than the string.
if (findLen > stringLen)
{
return NULL;
}
}
// Set pointers.
const char* string = ptr;
const char* search = _find;
// Start comparing.
while (*string++ == *search++)
{
// If end of the 'search' string is reached, all characters match.
if ('\0' == *search)
{
return ptr;
}
}
}
return NULL;
}
const char* stristr(const char* _str, const char* _find, size_t _max)
{
const char* ptr = _str;
size_t stringLen = strnlen(_str, _max);
const size_t findLen = strnlen(_find);
for (; stringLen >= findLen; ++ptr, --stringLen)
{
// Find start of the string.
while (toLower(*ptr) != toLower(*_find) )
{
++ptr;
--stringLen;
// Search pattern lenght can't be longer than the string.
if (findLen > stringLen)
{
return NULL;
}
}
// Set pointers.
const char* string = ptr;
const char* search = _find;
// Start comparing.
while (toLower(*string++) == toLower(*search++) )
{
// If end of the 'search' string is reached, all characters match.
if ('\0' == *search)
{
return ptr;
}
}
}
return NULL;
}
const char* strnl(const char* _str)
{
for (; '\0' != *_str; _str += strnlen(_str, 1024) )
{
const char* eol = strnstr(_str, "\r\n", 1024);
if (NULL != eol)
{
return eol + 2;
}
eol = strnstr(_str, "\n", 1024);
if (NULL != eol)
{
return eol + 1;
}
}
return _str;
}
const char* streol(const char* _str)
{
for (; '\0' != *_str; _str += strnlen(_str, 1024) )
{
const char* eol = strnstr(_str, "\r\n", 1024);
if (NULL != eol)
{
return eol;
}
eol = strnstr(_str, "\n", 1024);
if (NULL != eol)
{
return eol;
}
}
return _str;
}
const char* strws(const char* _str)
{
for (; isSpace(*_str); ++_str) {};
return _str;
}
const char* strnws(const char* _str)
{
for (; !isSpace(*_str); ++_str) {};
return _str;
}
const char* strword(const char* _str)
{
for (char ch = *_str++; isAlphaNum(ch) || '_' == ch; ch = *_str++) {};
return _str-1;
}
const char* strmb(const char* _str, char _open, char _close)
{
int count = 0;
for (char ch = *_str++; ch != '\0' && count >= 0; ch = *_str++)
{
if (ch == _open)
{
count++;
}
else if (ch == _close)
{
count--;
if (0 == count)
{
return _str-1;
}
}
}
return NULL;
}
void eolLF(char* _out, size_t _size, const char* _str)
{
if (0 < _size)
{
char* end = _out + _size - 1;
for (char ch = *_str++; ch != '\0' && _out < end; ch = *_str++)
{
if ('\r' != ch)
{
*_out++ = ch;
}
}
*_out = '\0';
}
}
const char* findIdentifierMatch(const char* _str, const char* _word)
{
size_t len = strnlen(_word);
const char* ptr = strnstr(_str, _word);
for (; NULL != ptr; ptr = strnstr(ptr + len, _word) )
{
if (ptr != _str)
{
char ch = *(ptr - 1);
if (isAlphaNum(ch) || '_' == ch)
{
continue;
}
}
char ch = ptr[len];
if (isAlphaNum(ch) || '_' == ch)
{
continue;
}
return ptr;
}
return ptr;
}
const char* findIdentifierMatch(const char* _str, const char* _words[])
{
for (const char* word = *_words; NULL != word; ++_words, word = *_words)
{
const char* match = findIdentifierMatch(_str, word);
if (NULL != match)
{
return match;
}
}
return NULL;
}
int32_t write(WriterI* _writer, const char* _format, va_list _argList, Error* _err);
int32_t vsnprintfRef(char* _out, size_t _max, const char* _format, va_list _argList)
{
if (1 < _max)
{
StaticMemoryBlockWriter writer(_out, _max-1);
_out[_max-1] = '\0';
Error err;
va_list argListCopy;
va_copy(argListCopy, _argList);
int32_t size = write(&writer, _format, argListCopy, &err);
va_end(argListCopy);
if (err.isOk() )
{
return size;
}
}
Error err;
SizerWriter sizer;
va_list argListCopy;
va_copy(argListCopy, _argList);
int32_t size = write(&sizer, _format, argListCopy, &err);
va_end(argListCopy);
return size - 1 /* size without '\0' terminator */;
}
int32_t vsnprintf(char* _out, size_t _max, const char* _format, va_list _argList)
{
#if BX_CRT_NONE
return vsnprintfRef(_out, _max, _format, _argList);
#elif BX_CRT_MSVC
int32_t len = -1;
if (NULL != _out)
{
va_list argListCopy;
va_copy(argListCopy, _argList);
len = ::vsnprintf_s(_out, _max, size_t(-1), _format, argListCopy);
va_end(argListCopy);
}
return -1 == len ? ::_vscprintf(_format, _argList) : len;
#else
return ::vsnprintf(_out, _max, _format, _argList);
#endif // BX_COMPILER_MSVC
}
int32_t snprintf(char* _out, size_t _max, const char* _format, ...)
{
va_list argList;
va_start(argList, _format);
int32_t len = vsnprintf(_out, _max, _format, argList);
va_end(argList);
return len;
}
int32_t vsnwprintf(wchar_t* _out, size_t _max, const wchar_t* _format, va_list _argList)
{
#if BX_CRT_NONE
BX_UNUSED(_out, _max, _format, _argList);
return 0;
#elif BX_CRT_MSVC
int32_t len = -1;
if (NULL != _out)
{
va_list argListCopy;
va_copy(argListCopy, _argList);
len = ::_vsnwprintf_s(_out, _max, size_t(-1), _format, argListCopy);
va_end(argListCopy);
}
return -1 == len ? ::_vscwprintf(_format, _argList) : len;
#elif BX_CRT_MINGW
return ::vsnwprintf(_out, _max, _format, _argList);
#else
return ::vswprintf(_out, _max, _format, _argList);
#endif // BX_COMPILER_MSVC
}
int32_t swnprintf(wchar_t* _out, size_t _max, const wchar_t* _format, ...)
{
va_list argList;
va_start(argList, _format);
int32_t len = vsnwprintf(_out, _max, _format, argList);
va_end(argList);
return len;
}
const char* baseName(const char* _filePath)
{
const char* bs = strnrchr(_filePath, '\\');
const char* fs = strnrchr(_filePath, '/');
const char* slash = (bs > fs ? bs : fs);
const char* colon = strnrchr(_filePath, ':');
const char* basename = slash > colon ? slash : colon;
if (NULL != basename)
{
return basename+1;
}
return _filePath;
}
void prettify(char* _out, size_t _count, uint64_t _size)
{
uint8_t idx = 0;
double size = double(_size);
while (_size != (_size&0x7ff)
&& idx < 9)
{
_size >>= 10;
size *= 1.0/1024.0;
++idx;
}
snprintf(_out, _count, "%0.2f %c%c", size, "BkMGTPEZY"[idx], idx > 0 ? 'B' : '\0');
}
size_t strlcpy(char* _dst, const char* _src, size_t _max)
{
return strlncpy(_dst, _max, _src);
}
size_t strlcat(char* _dst, const char* _src, size_t _max)
{
return strlncat(_dst, _max, _src);
}
} // namespace bx
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