irrlicht/include/coreutil.h

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// Copyright (C) 2002-2009 Nikolaus Gebhardt
// This file is part of the "Irrlicht Engine".
// For conditions of distribution and use, see copyright notice in irrlicht.h
#ifndef __IRR_CORE_UTIL_H_INCLUDED__
#define __IRR_CORE_UTIL_H_INCLUDED__
#include "irrString.h"
namespace irr
{
namespace core
{
/*! \file irrxml.h
\brief File containing useful basic utility functions
*/
// ----------- some basic quite often used string functions -----------------
//! search if a filename has a proper extension
inline s32 isFileExtension ( const core::string<c16>& filename,
const core::string<c16>& ext0,
const core::string<c16>& ext1,
const core::string<c16>& ext2
)
{
s32 extPos = filename.findLast ( '.' );
if ( extPos < 0 )
return 0;
extPos += 1;
if ( filename.equals_substring_ignore_case ( ext0, extPos ) ) return 1;
if ( filename.equals_substring_ignore_case ( ext1, extPos ) ) return 2;
if ( filename.equals_substring_ignore_case ( ext2, extPos ) ) return 3;
return 0;
}
//! search if a filename has a proper extension
inline bool hasFileExtension ( const core::string<c16>& filename,
const core::string<c16>& ext0,
const core::string<c16>& ext1 = "",
const core::string<c16>& ext2 = ""
)
{
return isFileExtension ( filename, ext0, ext1, ext2 ) > 0;
}
//! cut the filename extension from a source string and stores in the dest string
inline stringc& cutFilenameExtension ( stringc &dest, const stringc &source )
{
s32 endPos = source.findLast ( '.' );
dest = source.subString ( 0, endPos < 0 ? source.size () : endPos );
return dest;
}
//! cut the filename extension from a source string and stores in the dest string
inline stringw& cutFilenameExtension ( stringw &dest, const stringw &source )
{
s32 endPos = source.findLast ( '.' );
dest = source.subString ( 0, endPos < 0 ? source.size () : endPos );
return dest;
}
//! get the filename extension from a string
inline stringc& getFileNameExtension ( stringc &dest, const stringc &source )
{
s32 endPos = source.findLast ( '.' );
if ( endPos < 0 )
dest = "";
else
dest = source.subString ( endPos, source.size () );
return dest;
}
//! delete path from filename
inline core::stringw& deletePathFromFilename(core::stringw& filename)
{
// delete path from filename
const wchar_t *s = filename.c_str();
const wchar_t* p = s + filename.size();
// search for path separator or beginning
while ( *p != '/' && *p != '\\' && p != s )
p--;
if ( p != s )
{
++p;
filename = p;
}
return filename;
}
//! delete path from filename
inline core::stringc& deletePathFromFilename(core::stringc& filename)
{
// delete path from filename
const c8 *s = filename.c_str();
const c8* p = s + filename.size();
// search for path separator or beginning
while ( *p != '/' && *p != '\\' && p != s )
p--;
if ( p != s )
{
++p;
filename = p;
}
return filename;
}
//! trim paths
inline core::string<c16>& deletePathFromPath(core::string<c16>& filename, s32 pathCount)
{
// delete path from filename
s32 i = filename.size();
// search for path separator or beginning
while ( i )
{
if ( filename[i] == '/' || filename[i] == '\\' )
{
if ( --pathCount <= 0 )
break;
}
i -= 1;
}
if ( i )
{
filename [ i + 1 ] = 0;
filename.validate();
}
return filename;
}
//! gets the last char of a string or null
inline c16 lastChar( const core::string<c16>& s)
{
return s.size() ? s [ s.size() - 1 ] : 0;
}
//! looks if file is in the same directory of path. returns offset of directory.
//! 0 means in same directory. 1 means file is direct child of path
inline s32 isInSameDirectory ( const core::string<c16>& path, const core::string<c16>& file )
{
s32 subA = 0;
s32 subB = 0;
s32 pos;
if ( path.size() && !path.equalsn ( file, path.size() ) )
return -1;
pos = 0;
while ( (pos = path.findNext ( '/', pos )) >= 0 )
{
subA += 1;
pos += 1;
}
pos = 0;
while ( (pos = file.findNext ( '/', pos )) >= 0 )
{
subB += 1;
pos += 1;
}
return subB - subA;
}
//! some standard function ( to remove dependencies )
#undef isdigit
#undef isspace
#undef isupper
inline s32 isdigit(s32 c) { return c >= '0' && c <= '9'; }
inline s32 isspace(s32 c) { return c == ' ' || c == '\f' || c == '\n' || c == '\r' || c == '\t' || c == '\v'; }
inline s32 isupper(s32 c) { return c >= 'A' && c <= 'Z'; }
} // end namespace core
} // end namespace irr
#endif