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Using a 2nd argument instead of va_copy().

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This seems to be the only reasonable C++03-only solution.
This commit is contained in:
madmaxoft 2014-01-15 18:28:51 +01:00
parent 3fd19df9fd
commit dd6c5779ec
7 changed files with 46 additions and 32 deletions
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6
lib/inifile/iniFile.cpp
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@ -446,10 +446,12 @@ bool cIniFile::SetValueF(const AString & a_KeyName, const AString & a_ValueName,
bool cIniFile::SetValueV(const AString & a_KeyName, const AString & a_ValueName, const char * a_Format, ...)
{
va_list args;
va_list args, argsCopy;
va_start(args, a_Format);
va_start(argsCopy, a_Format);
AString Data;
AppendVPrintf(Data, a_Format, args);
AppendVPrintf(Data, a_Format, args, argsCopy);
va_end(argsCopy);
va_end(args);
return SetValue(a_KeyName, a_ValueName, Data);
}

6
src/CommandOutput.cpp
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@ -16,9 +16,11 @@
void cCommandOutputCallback::Out(const char * a_Fmt, ...)
{
AString Output;
va_list args;
va_list args, argsCopy;
va_start(args, a_Fmt);
AppendVPrintf(Output, a_Fmt, args);
va_start(argsCopy, a_Fmt);
AppendVPrintf(Output, a_Fmt, args, argsCopy);
va_end(argsCopy);
va_end(args);
Output.append("\n");
Out(Output);

16
src/Log.cpp
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@ -99,10 +99,10 @@ void cLog::ClearLog()
void cLog::Log(const char * a_Format, va_list argList)
void cLog::Log(const char * a_Format, va_list argList, va_list argListCopy)
{
AString Message;
AppendVPrintf(Message, a_Format, argList);
AppendVPrintf(Message, a_Format, argList, argListCopy);
time_t rawtime;
time ( &rawtime );
@ -147,11 +147,13 @@ void cLog::Log(const char * a_Format, va_list argList)
void cLog::Log(const char* a_Format, ...)
void cLog::Log(const char * a_Format, ...)
{
va_list argList;
va_list argList, argListCopy;
va_start(argList, a_Format);
Log( a_Format, argList );
va_start(argListCopy, a_Format);
Log(a_Format, argList, argListCopy);
va_end(argListCopy);
va_end(argList);
}
@ -159,9 +161,9 @@ void cLog::Log(const char* a_Format, ...)
void cLog::SimpleLog(const char* a_String)
void cLog::SimpleLog(const char * a_String)
{
Log("%s", a_String );
Log("%s", a_String);
}

8
src/Log.h
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@ -14,11 +14,11 @@ private:
public:
cLog(const AString & a_FileName);
~cLog();
void Log(const char* a_Format, va_list argList );
void Log(const char* a_Format, ...);
void Log(const char * a_Format, va_list argList, va_list argListCopy);
void Log(const char * a_Format, ...);
// tolua_begin
void SimpleLog(const char* a_String);
void OpenLog( const char* a_FileName );
void SimpleLog(const char * a_String);
void OpenLog(const char * a_FileName);
void CloseLog();
void ClearLog();
static cLog* GetInstance();

6
src/OSSupport/File.cpp
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@ -440,9 +440,11 @@ AString cFile::ReadWholeFile(const AString & a_FileName)
int cFile::Printf(const char * a_Fmt, ...)
{
AString buf;
va_list args;
va_list args, argsCopy;
va_start(args, a_Fmt);
AppendVPrintf(buf, a_Fmt, args);
va_start(argsCopy, a_Fmt);
AppendVPrintf(buf, a_Fmt, args, argsCopy);
va_end(argsCopy);
va_end(args);
return Write(buf.c_str(), buf.length());
}

28
src/StringUtils.cpp
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@ -18,7 +18,7 @@
AString & AppendVPrintf(AString & str, const char *format, va_list args)
AString & AppendVPrintf(AString & str, const char *format, va_list args, va_list argsCopy)
{
ASSERT(format != NULL);
@ -28,10 +28,6 @@ AString & AppendVPrintf(AString & str, const char *format, va_list args)
// MS CRT provides secure printf that doesn't behave like in the C99 standard
if ((len = _vsnprintf_s(buffer, ARRAYCOUNT(buffer), _TRUNCATE, format, args)) != -1)
#else // _MSC_VER
// We need to store a copy of the args, because on AMD64 in GCC the vsnprintf() is allowed to make changes to it (WTF?)
// Ref.: issue #541, http://www.bailopan.net/blog/?p=30
va_list args2;
va_copy(args2, args);
if ((len = vsnprintf(buffer, ARRAYCOUNT(buffer), format, args)) < ARRAYCOUNT(buffer))
#endif // else _MSC_VER
{
@ -53,9 +49,9 @@ AString & AppendVPrintf(AString & str, const char *format, va_list args)
// Allocate a buffer and printf into it:
std::vector<char> Buffer(len + 1);
#ifdef _MSC_VER
vsprintf_s((char *)&(Buffer.front()), Buffer.size(), format, args);
vsprintf_s((char *)&(Buffer.front()), Buffer.size(), format, argsCopy);
#else // _MSC_VER
vsnprintf((char *)&(Buffer.front()), Buffer.size(), format, args2);
vsnprintf((char *)&(Buffer.front()), Buffer.size(), format, argsCopy);
#endif // else _MSC_VER
str.append(&(Buffer.front()), Buffer.size() - 1);
return str;
@ -68,9 +64,11 @@ AString & AppendVPrintf(AString & str, const char *format, va_list args)
AString & Printf(AString & str, const char * format, ...)
{
str.clear();
va_list args;
va_list args, argsCopy;
va_start(args, format);
std::string &retval = AppendVPrintf(str, format, args);
va_start(argsCopy, format);
std::string &retval = AppendVPrintf(str, format, args, argsCopy);
va_end(argsCopy);
va_end(args);
return retval;
}
@ -82,9 +80,11 @@ AString & Printf(AString & str, const char * format, ...)
AString Printf(const char * format, ...)
{
AString res;
va_list args;
va_list args, argsCopy;
va_start(args, format);
AppendVPrintf(res, format, args);
va_start(argsCopy, format);
AppendVPrintf(res, format, args, argsCopy);
va_end(argsCopy);
va_end(args);
return res;
}
@ -95,9 +95,11 @@ AString Printf(const char * format, ...)
AString & AppendPrintf(AString &str, const char *format, ...)
{
va_list args;
va_list args, argsCopy;
va_start(args, format);
std::string &retval = AppendVPrintf(str, format, args);
va_start(argsCopy, format);
std::string &retval = AppendVPrintf(str, format, args, argsCopy);
va_end(argsCopy);
va_end(args);
return retval;
}

8
src/StringUtils.h
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@ -21,8 +21,12 @@ typedef std::list<AString> AStringList;
/// Add the formated string to the existing data in the string
extern AString & AppendVPrintf(AString & str, const char * format, va_list args);
/** Add the formated string to the existing data in the string
It is silly to need to specify the arguments twice, but it is required for x64 / GCC:
Ref.: issue #541, http://www.bailopan.net/blog/?p=30
va_copy is not available until C++11, so we need to make do with passing a duplicate.
*/
extern AString & AppendVPrintf(AString & str, const char * format, va_list args, va_list argsCopy);
/// Output the formatted text into the string
extern AString & Printf (AString & str, const char * format, ...);