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// StringUtils.cpp
// Implements the various string helper functions:
#include "Globals.h"
AString & AppendVPrintf(AString & str, const char *format, va_list args)
{
ASSERT(format != NULL);
char buffer[2048];
size_t len;
#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)
#else // _MSC_VER
if ((len = vsnprintf(buffer, ARRAYCOUNT(buffer), format, args)) < ARRAYCOUNT(buffer))
#endif // else _MSC_VER
{
// The result did fit into the static buffer
str.append(buffer, len);
return str;
}
// The result did not fit into the static buffer
#ifdef _MSC_VER
// for MS CRT, we need to calculate the result length
len = _vscprintf(format, args);
if (len == -1)
{
return str;
}
#endif // _MSC_VER
// Allocate a buffer and printf into it:
str.resize(len + 1);
// HACK: we're accessing AString's internal buffer in a way that is NOT guaranteed to always work. But it works on all STL implementations tested.
// I can't think of any other way that is safe, doesn't allocate twice as much space as needed and doesn't use C++11 features like the move constructor
#ifdef _MSC_VER
vsprintf_s((char *)str.data(), len + 1, format, args);
#else // _MSC_VER
vsnprintf((char *)str.data(), len + 1, format, args);
#endif // else _MSC_VER
str.resize(len);
return str;
}
AString & Printf(AString & str, const char *format, ...)
{
str.clear();
va_list args;
va_start(args, format);
std::string &retval = AppendVPrintf(str, format, args);
va_end(args);
return retval;
}
AString & AppendPrintf(AString &str, const char *format, ...)
{
va_list args;
va_start(args, format);
std::string &retval = AppendVPrintf(str, format, args);
va_end(args);
return retval;
}
AStringVector StringSplit(const AString & str, const AString & delim)
{
AStringVector results;
size_t cutAt = 0;
size_t Prev = 0;
while ((cutAt = str.find_first_of(delim, Prev)) != str.npos)
{
results.push_back(str.substr(Prev, cutAt - Prev));
Prev = cutAt + delim.length();
}
if (Prev < str.length())
{
results.push_back(str.substr(Prev));
}
return results;
}
AString TrimString(const AString & str)
{
size_t len = str.length();
size_t start = 0;
while (start < len)
{
if (str[start] > 32)
{
break;
}
++start;
}
if (start == len)
{
return "";
}
size_t end = len;
while (end >= start)
{
if (str[end] > 32)
{
break;
}
--end;
}
return str.substr(start, end - start + 1);
}
AString & StrToUpper(AString & s)
{
AString::iterator i = s.begin();
AString::iterator end = s.end();
while (i != end)
{
*i = (char)toupper(*i);
++i;
}
return s;
}
int NoCaseCompare(const AString & s1, const AString & s2)
{
#ifdef _MSC_VER
// MSVC has stricmp that compares case-insensitive:
return _stricmp(s1.c_str(), s2.c_str());
#else
// Do it the hard way:
AString s1Copy(s1);
AString s2Copy(s2);
return StrToUpper(s1Copy).compare(StrToUpper(s2Copy));
#endif // else _MSC_VER
}
void ReplaceString(AString & iHayStack, const AString & iNeedle, const AString & iReplaceWith)
{
size_t pos1 = iHayStack.find(iNeedle);
while (pos1 != AString::npos)
{
iHayStack.replace( pos1, iNeedle.size(), iReplaceWith);
pos1 = iHayStack.find(iNeedle, pos1);
}
}
AStringList GetDirectoryContents(const char * a_Directory)
{
AStringList AllFiles;
#ifdef _WIN32
AString FileFilter = AString(a_Directory) + "*.*";
HANDLE hFind;
WIN32_FIND_DATA FindFileData;
if ((hFind = FindFirstFile(FileFilter.c_str(), &FindFileData)) != INVALID_HANDLE_VALUE)
{
do
{
AllFiles.push_back(FindFileData.cFileName);
} while (FindNextFile(hFind, &FindFileData));
FindClose(hFind);
}
#else // _WIN32
DIR * dp;
struct dirent *dirp;
if (*a_Directory == 0)
{
a_Directory = ".";
}
if ((dp = opendir(a_Directory)) == NULL)
{
LOGERROR("Error (%i) opening directory \"%s\"\n", errno, a_Directory );
}
else
{
while ((dirp = readdir(dp)) != NULL)
{
AllFiles.push_back(dirp->d_name);
}
closedir(dp);
}
#endif // else _WIN32
return AllFiles;
}
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