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Added vsnprintf implementation.

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This commit is contained in:
Branimir Karadžić
2017-02-04 22:27:49 -08:00
parent 273dc78136
commit 89248e2874
4 changed files with 429 additions and 29 deletions
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47
src/string.cpp
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@@ -3,9 +3,10 @@
* License: https://github.com/bkaradzic/bx#license-bsd-2-clause
*/
#include <bx/string.h>
#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
@@ -381,10 +382,42 @@ namespace bx
return NULL;
}
#if !BX_CRT_NONE
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_MSVC
#if BX_CRT_NONE
return vsnprintfRef(_out, _max, _format, _argList);
#elif BX_CRT_MSVC
int32_t len = -1;
if (NULL != _out)
{
@@ -398,7 +431,6 @@ namespace bx
return ::vsnprintf(_out, _max, _format, _argList);
#endif // BX_COMPILER_MSVC
}
#endif // !BX_CRT_NONE
int32_t snprintf(char* _out, size_t _max, const char* _format, ...)
{
@@ -409,10 +441,12 @@ namespace bx
return len;
}
#if !BX_CRT_NONE
int32_t vsnwprintf(wchar_t* _out, size_t _max, const wchar_t* _format, va_list _argList)
{
#if BX_CRT_MSVC
#if BX_CRT_NONE
BX_UNUSED(_out, _max, _format, _argList);
return 0;
#elif BX_CRT_MSVC
int32_t len = -1;
if (NULL != _out)
{
@@ -437,7 +471,6 @@ namespace bx
va_end(argList);
return len;
}
#endif // !BX_CRT_NONE
const char* baseName(const char* _filePath)
{