//! returns the base part of a filename, i.e. all except for the directory
//! part. If no directory path is prefixed, the full name is returned.
core::stringc CFileSystem::getFileBasename(const core::stringc& filename, bool keepExtension) const
{
// find last forward or backslash
s32 lastSlash = filename.findLast('/');
const s32 lastBackSlash = filename.findLast('\\');
lastSlash = core::max_(lastSlash, lastBackSlash);
// get number of chars after last dot
s32 end = 0;
if (!keepExtension)
{
// take care to search only after last slash to check only for
// dots in the filename
end = filename.findLast('.', lastSlash);
if (end == -1)
end=0;
else
end = filename.size()-end;
}
if ((u32)lastSlash < filename.size())
return filename.subString(lastSlash+1, filename.size()-lastSlash-1-end);
else if (end != 0)
return filename.subString(0, filename.size()-end);
else
return filename;
}
bool FileSceneNode::isimg(core::stringc name) {
if ((name.subString(name.size() - 4, 4).equals_ignore_case(".bmp")) ||
(name.subString(name.size() - 4, 4).equals_ignore_case(".jpg")) ||
(name.subString(name.size() - 4, 4).equals_ignore_case(".tga")) ||
(name.subString(name.size() - 4, 4).equals_ignore_case(".pcx")) ||
(name.subString(name.size() - 4, 4).equals_ignore_case(".png")) ||
(name.subString(name.size() - 4, 4).equals_ignore_case(".psd")))
return true;
return false;
}
bool FileSceneNode::isanimesh(core::stringc name) {
if ((name.subString(name.size() - 4, 4).equals_ignore_case(".md2")) ||
(name.subString(name.size() - 4, 4).equals_ignore_case(".md3")) ||
(name.subString(name.size() - 4, 4).equals_ignore_case(".obj")) ||
(name.subString(name.size() - 4, 4).equals_ignore_case(".bsp")) ||
(name.subString(name.size() - 5, 5).equals_ignore_case(".my3d")) ||
(name.subString(name.size() - 5, 5).equals_ignore_case(".lmts")) ||
(name.subString(name.size() - 4, 4).equals_ignore_case(".csm")) ||
(name.subString(name.size() - 4, 4).equals_ignore_case(".oct")))
return true;
return false;
}
core::stringc CFileSystem::getAbsolutePath(const core::stringc& filename) const
{
c8 *p=0;
#ifdef _IRR_WINDOWS_API_
#if !defined ( _WIN32_WCE )
c8 fpath[_MAX_PATH];
p = _fullpath( fpath, filename.c_str(), _MAX_PATH);
#endif
#elif (defined(_IRR_POSIX_API_) || defined(_IRR_OSX_PLATFORM_))
c8 fpath[4096];
fpath[0]=0;
p = realpath(filename.c_str(), fpath);
if (!p)
{
// content in fpath is undefined at this point
if ('0'==fpath[0]) // seems like fpath wasn't altered
{
// at least remove a ./ prefix
if ('.'==filename[0] && '/'==filename[1])
return filename.subString(2, filename.size()-2);
else
return filename;
}
else
return core::stringc(fpath);
}
#endif
return core::stringc(p);
}
core::stringc GetContextPathFromFilename( const core::stringc& filename )
{
core::stringc path;
s32 i=filename.size()-1;
while ( i >= 0 && filename[i] != '/' )
{
i--;
}
path = filename.subString( 0, i+1 );
return path;
}
core::stringc CMS3DMeshFileLoader::stripPathFromString(const core::stringc& inString, bool returnPath) const
{
s32 slashIndex=inString.findLast('/'); // forward slash
s32 backSlash=inString.findLast('\\'); // back slash
if (backSlash>slashIndex) slashIndex=backSlash;
if (slashIndex==-1)//no slashes found
{
if (returnPath)
return core::stringc(); //no path to return
else
return inString;
}
if (returnPath)
return inString.subString(0, slashIndex + 1);
else
return inString.subString(slashIndex+1, inString.size() - (slashIndex+1));
}
//! returns the directory part of a filename, i.e. all until the first
//! slash or backslash, excluding it. If no directory path is prefixed, a '.'
//! is returned.
core::stringc CFileSystem::getFileDir(const core::stringc& filename) const
{
// find last forward or backslash
s32 lastSlash = filename.findLast('/');
const s32 lastBackSlash = filename.findLast('\\');
lastSlash = lastSlash > lastBackSlash ? lastSlash : lastBackSlash;
if ((u32)lastSlash < filename.size())
return filename.subString(0, lastSlash);
else
return ".";
}
//! returns the base part of a filename, i.e. all except for the directory
//! part. If no directory path is prefixed, the full name is returned.
core::stringc CFileSystem::getFileBasename(const core::stringc& filename, bool keepExtension) const
{
// find last forward or backslash
s32 lastSlash = filename.findLast('/');
const s32 lastBackSlash = filename.findLast('\\');
lastSlash = core::max_(lastSlash, lastBackSlash);
s32 end = 0;
if (!keepExtension)
{
end = filename.findLast('.');
if (end == -1)
end=0;
else
end = filename.size()-end;
}
if ((u32)lastSlash < filename.size())
return filename.subString(lastSlash+1, filename.size()-lastSlash-1-end);
else if (end != 0)
return filename.subString(0, filename.size()-end);
else
return filename;
}
bool FileSceneNode::isvid(core::stringc name) {
if ((name.subString(name.size() - 4, 4).equals_ignore_case(".avi")) ||
(name.subString(name.size() - 4, 4).equals_ignore_case(".wmv")) ||
(name.subString(name.size() - 4, 4).equals_ignore_case(".mpg")) ||
(name.subString(name.size() - 5, 5).equals_ignore_case(".mpeg")) ||
(name.subString(name.size() - 4, 4).equals_ignore_case(".mp4")) ||
(name.subString(name.size() - 4, 4).equals_ignore_case(".mkv")) ||
(name.subString(name.size() - 4, 4).equals_ignore_case(".ogm")) ||
(name.subString(name.size() - 3, 3).equals_ignore_case(".rm")) ||
(name.subString(name.size() - 5, 5).equals_ignore_case(".divx")))
return true;
return false;
}
core::array<SDefineExp> grabDefineExpressions(core::stringc &shaderProgram)
{
s32 CurrentSearchPos = 1;
s32 FindHelper = 1;
s32 FindHelper2 = 1;
core::array<SDefineExp> DefineArray;
// Dont bother stripping comments if theres no defines.
if((CurrentSearchPos = shaderProgram.find("##ifdef")) == -1)
return DefineArray;
// Strip all comments, they get in the way.
while((CurrentSearchPos = shaderProgram.find("//")) > -1)
{
FindHelper = shaderProgram.findNext('\n',CurrentSearchPos);
if(FindHelper != -1)
for(u32 i = CurrentSearchPos;i < (u32)FindHelper;++i)
shaderProgram[i] = ' ';
else
for(u32 i = CurrentSearchPos;i < shaderProgram.size();++i)
shaderProgram[i] = ' ';
}
while((CurrentSearchPos = shaderProgram.find("/*")) > -1)
{
FindHelper = shaderProgram.find("*/");
if(FindHelper > CurrentSearchPos)
for(u32 i = CurrentSearchPos;i <= (u32)(FindHelper + 1);++i)
shaderProgram[i] = ' ';
else
for(u32 i = CurrentSearchPos;i < shaderProgram.size();++i)
shaderProgram[i] = ' ';
}
while((CurrentSearchPos = shaderProgram.find("##ifdef")) > -1)
{
SDefineExp DExp;
DExp.IfPos = CurrentSearchPos;
// Comment out the ##ifdef so that we do not find it again, and so that the compiler ignores it.
shaderProgram[CurrentSearchPos] = '/';
shaderProgram[CurrentSearchPos + 1] = '/';
FindHelper = shaderProgram.findNext(' ',CurrentSearchPos);
FindHelper2 = shaderProgram.findNext('\n',FindHelper);
if(FindHelper == -1 || FindHelper2 == -1)
{
std::cerr << "Shader preprocessor encountered invalid if statement." << std::endl;
return DefineArray;
}
// Find the appropriate expression and trim all white space.
DExp.IfExp = shaderProgram.subString(FindHelper,FindHelper2 - FindHelper);
DExp.IfExp.trim();
// Record if its inverse and remove ! sign from expression.
if(DExp.IfExp[0] == '!')
{
DExp.IfExp[0] = ' ';
DExp.IfExp.trim();
DExp.Inverse = true;
}
bool EndIfFound = false;
FindHelper2 = CurrentSearchPos;
s32 IfEndScope = 0;
while(!EndIfFound)
{
FindHelper = shaderProgram.findNext('#',FindHelper2);
if(FindHelper == -1 || FindHelper >= (s32)(shaderProgram.size() - 3))
{
std::cerr << "Shader preprocessor encountered unmatched if statement." << std::endl;
return DefineArray;
}
if(IfEndScope < 0)
{
std::cerr << "Shader preprocessor encountered unmatched endif statement." << std::endl;
return DefineArray;
}
if(shaderProgram[FindHelper + 1] != '#')
{
FindHelper2 = FindHelper + 1;
continue;
}
else if(shaderProgram[FindHelper + 2] == 'i')
{
IfEndScope++;
}
else if(shaderProgram[FindHelper + 2] == 'e' && shaderProgram[FindHelper + 3] == 'n')
{
if(IfEndScope == 0)
break;
IfEndScope--;
}
else if(shaderProgram[FindHelper + 2] == 'e' && shaderProgram[FindHelper + 3] == 'l')
{
if(IfEndScope == 0)
{
if(DExp.ElsePos != -1)
{
std::cerr << "Shader preprocessor encountered duplicate else statements per if statement." << std::endl;
return DefineArray;
}
// Comment out the ##else so that we do not find it again, and so that the compiler ignores it.
shaderProgram[FindHelper] = '/';
shaderProgram[FindHelper + 1] = '/';
DExp.ElsePos = FindHelper;
}
}
FindHelper2 = FindHelper + 2;
}
// Comment out the ##endif so that we do not find it again, and so that the compiler ignores it.
shaderProgram[FindHelper] = '/';
shaderProgram[FindHelper + 1] = '/';
DExp.EndPos = FindHelper;
// Add the define expression to the array.
DefineArray.push_back(DExp);
}
return DefineArray;
}
//! PreProcesses a shader using Irrlicht's built-in shader preprocessor.
core::stringc CShaderPreprocessor::ppShader(core::stringc shaderProgram)
{
core::array<SDefineExp> DefineArray = grabDefineExpressions(shaderProgram);
// No need for this as its already inited at startup.
//// If DefineMap is empty then initialize it.
//if(DefineMap.isEmpty())
// initDefineMap();
for(u32 i = 0; i < DefineArray.size();++i)
{
if(DefineArray[i].IfPos == -1)
break;
// Either it is true and not inversed, or it is false, but inversed.
// (Wish C++ had a built-in (logical) XOR operator sometimes. :P)
if((DefineMap.find(DefineArray[i].IfExp) && !DefineArray[i].Inverse)
|| (!DefineMap.find(DefineArray[i].IfExp) && DefineArray[i].Inverse))
{
if(DefineArray[i].ElsePos > -1)
{
// If there is an else statement then clear the else section.
if(DefineArray[i].EndPos != -1)
{
for(int z = DefineArray[i].ElsePos;z <= DefineArray[i].EndPos + 6;++z)
shaderProgram[z] = ' ';
}
}
}
else if(DefineArray[i].ElsePos != -1)
{
// If there is an else statement then clear the if section.
for(int z = DefineArray[i].IfPos;z <= DefineArray[i].ElsePos + 5;++z)
shaderProgram[z] = ' ';
}
else
{
// Else just clear the whole block.
if(DefineArray[i].EndPos != -1)
{
for(int z = DefineArray[i].IfPos;z <= DefineArray[i].EndPos + 6;++z)
shaderProgram[z] = ' ';
}
}
}
core::map<core::stringc,core::stringc>::ParentFirstIterator DefIter;
s32 DefFinder = 1;
// Replace all shader defines.
for(DefIter = DefineMap.getParentFirstIterator();!DefIter.atEnd();DefIter++)
{
if(DefIter->getValue().size() == 0)
continue;
// Replace all occurances.
while((DefFinder = shaderProgram.find(DefIter->getKey().c_str())) > -1)
{
// Clear the define from the code.
for(u32 z = DefFinder;z < DefFinder + DefIter->getKey().size();++z)
shaderProgram[z] = ' ';
// Stitch value and shader program together. (Is there a faster way?)
shaderProgram = shaderProgram.subString(0,DefFinder) + DefIter->getValue()
+ shaderProgram.subString(DefFinder,shaderProgram.size() - 1);
}
}
return shaderProgram;
}