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Another VarArgs fix. 

This time using va_copy() on platforms that have it and simple assignment on platforms that don't.
This commit is contained in:
madmaxoft 2014-01-16 08:34:10 +01:00
parent 4974bf2832
commit ba49a32c3a
7 changed files with 39 additions and 43 deletions
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6
lib/inifile/iniFile.cpp
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@ -446,12 +446,10 @@ 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, argsCopy;
va_list args;
va_start(args, a_Format);
va_start(argsCopy, a_Format);
AString Data;
AppendVPrintf(Data, a_Format, args, argsCopy);
va_end(argsCopy);
AppendVPrintf(Data, a_Format, args);
va_end(args);
return SetValue(a_KeyName, a_ValueName, Data);
}

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

10
src/Log.cpp
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@ -99,10 +99,10 @@ void cLog::ClearLog()
void cLog::Log(const char * a_Format, va_list argList, va_list argListCopy)
void cLog::Log(const char * a_Format, va_list argList)
{
AString Message;
AppendVPrintf(Message, a_Format, argList, argListCopy);
AppendVPrintf(Message, a_Format, argList);
time_t rawtime;
time ( &rawtime );
@ -149,11 +149,9 @@ void cLog::Log(const char * a_Format, va_list argList, va_list argListCopy)
void cLog::Log(const char * a_Format, ...)
{
va_list argList, argListCopy;
va_list argList;
va_start(argList, a_Format);
va_start(argListCopy, a_Format);
Log(a_Format, argList, argListCopy);
va_end(argListCopy);
Log(a_Format, argList);
va_end(argList);
}

2
src/Log.h
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@ -14,7 +14,7 @@ private:
public:
cLog(const AString & a_FileName);
~cLog();
void Log(const char * a_Format, va_list argList, va_list argListCopy);
void Log(const char * a_Format, va_list argList);
void Log(const char * a_Format, ...);
// tolua_begin
void SimpleLog(const char * a_String);

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

44
src/StringUtils.cpp
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@ -14,39 +14,52 @@
#pragma comment(lib, "ws2_32.lib")
#endif
// For platforms that don't have va_copy, define out own, simplistic one:
#ifndef va_copy
#define va_copy(dst, src) dst = src
#endif va_copy
AString & AppendVPrintf(AString & str, const char *format, va_list args, va_list argsCopy)
AString & AppendVPrintf(AString & str, const char *format, va_list args)
{
ASSERT(format != NULL);
char buffer[2048];
size_t len;
va_list argsCopy;
va_copy(argsCopy, args);
#ifdef _MSC_VER
// 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)
if ((len = _vsnprintf_s(buffer, ARRAYCOUNT(buffer), _TRUNCATE, format, argsCopy)) != -1)
#else // _MSC_VER
if ((len = vsnprintf(buffer, ARRAYCOUNT(buffer), format, args)) < ARRAYCOUNT(buffer))
if ((len = vsnprintf(buffer, ARRAYCOUNT(buffer), format, argsCopy)) < ARRAYCOUNT(buffer))
#endif // else _MSC_VER
{
// The result did fit into the static buffer
va_end(argsCopy);
str.append(buffer, len);
return str;
}
va_end(argsCopy);
// The result did not fit into the static buffer
// The result did not fit into the static buffer, use a dynamic buffer:
#ifdef _MSC_VER
// for MS CRT, we need to calculate the result length
len = _vscprintf(format, args);
va_copy(argsCopy, args);
len = _vscprintf(format, argsCopy);
if (len == -1)
{
va_end(argsCopy);
return str;
}
va_end(argsCopy);
#endif // _MSC_VER
// Allocate a buffer and printf into it:
va_copy(argsCopy, args);
std::vector<char> Buffer(len + 1);
#ifdef _MSC_VER
vsprintf_s((char *)&(Buffer.front()), Buffer.size(), format, argsCopy);
@ -54,6 +67,7 @@ AString & AppendVPrintf(AString & str, const char *format, va_list args, va_list
vsnprintf((char *)&(Buffer.front()), Buffer.size(), format, argsCopy);
#endif // else _MSC_VER
str.append(&(Buffer.front()), Buffer.size() - 1);
va_end(argsCopy);
return str;
}
@ -64,11 +78,9 @@ AString & AppendVPrintf(AString & str, const char *format, va_list args, va_list
AString & Printf(AString & str, const char * format, ...)
{
str.clear();
va_list args, argsCopy;
va_list args;
va_start(args, format);
va_start(argsCopy, format);
std::string &retval = AppendVPrintf(str, format, args, argsCopy);
va_end(argsCopy);
std::string &retval = AppendVPrintf(str, format, args);
va_end(args);
return retval;
}
@ -80,11 +92,9 @@ AString & Printf(AString & str, const char * format, ...)
AString Printf(const char * format, ...)
{
AString res;
va_list args, argsCopy;
va_list args;
va_start(args, format);
va_start(argsCopy, format);
AppendVPrintf(res, format, args, argsCopy);
va_end(argsCopy);
AppendVPrintf(res, format, args);
va_end(args);
return res;
}
@ -93,13 +103,11 @@ AString Printf(const char * format, ...)
AString & AppendPrintf(AString &str, const char *format, ...)
AString & AppendPrintf(AString &str, const char * format, ...)
{
va_list args, argsCopy;
va_list args;
va_start(args, format);
va_start(argsCopy, format);
std::string &retval = AppendVPrintf(str, format, args, argsCopy);
va_end(argsCopy);
std::string &retval = AppendVPrintf(str, format, args);
va_end(args);
return retval;
}

8
src/StringUtils.h
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@ -21,12 +21,8 @@ typedef std::list<AString> AStringList;
/** 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);
/** Add the formated string to the existing data in the string */
extern AString & AppendVPrintf(AString & str, const char * format, va_list args);
/// Output the formatted text into the string
extern AString & Printf (AString & str, const char * format, ...);