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coreutil.h

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00001 // Copyright (C) 2002-2009 Nikolaus Gebhardt
00002 // This file is part of the "Irrlicht Engine".
00003 // For conditions of distribution and use, see copyright notice in irrlicht.h
00004 
00005 #ifndef __IRR_CORE_UTIL_H_INCLUDED__
00006 #define __IRR_CORE_UTIL_H_INCLUDED__
00007 
00008 #include "irrString.h"
00009 #include "path.h"
00010 
00011 namespace irr
00012 {
00013 namespace core
00014 {
00015 
00020 // ----------- some basic quite often used string functions -----------------
00021 
00023 inline s32 isFileExtension (    const io::path& filename,
00024                                                                 const io::path& ext0,
00025                                                                 const io::path& ext1,
00026                                                                 const io::path& ext2)
00027 {
00028         s32 extPos = filename.findLast ( '.' );
00029         if ( extPos < 0 )
00030                 return 0;
00031 
00032         extPos += 1;
00033         if ( filename.equals_substring_ignore_case ( ext0, extPos ) ) return 1;
00034         if ( filename.equals_substring_ignore_case ( ext1, extPos ) ) return 2;
00035         if ( filename.equals_substring_ignore_case ( ext2, extPos ) ) return 3;
00036         return 0;
00037 }
00038 
00040 inline bool hasFileExtension (  const io::path& filename,
00041                                                                 const io::path& ext0,
00042                                                                 const io::path& ext1 = "",
00043                                                                 const io::path& ext2 = "")
00044 {
00045         return isFileExtension ( filename, ext0, ext1, ext2 ) > 0;
00046 }
00047 
00049 inline stringc& cutFilenameExtension ( stringc &dest, const stringc &source )
00050 {
00051         s32 endPos = source.findLast ( '.' );
00052         dest = source.subString ( 0, endPos < 0 ? source.size () : endPos );
00053         return dest;
00054 }
00055 
00057 inline stringw& cutFilenameExtension ( stringw &dest, const stringw &source )
00058 {
00059         s32 endPos = source.findLast ( '.' );
00060         dest = source.subString ( 0, endPos < 0 ? source.size () : endPos );
00061         return dest;
00062 }
00063 
00065 inline stringc& getFileNameExtension ( stringc &dest, const stringc &source )
00066 {
00067         s32 endPos = source.findLast ( '.' );
00068         if ( endPos < 0 )
00069                 dest = "";
00070         else
00071                 dest = source.subString ( endPos, source.size () );
00072         return dest;
00073 }
00074 
00076 inline core::stringw& deletePathFromFilename(core::stringw& filename)
00077 {
00078         // delete path from filename
00079         const wchar_t *s = filename.c_str();
00080         const wchar_t* p = s + filename.size();
00081 
00082         // search for path separator or beginning
00083         while ( *p != '/' && *p != '\\' && p != s )
00084                 p--;
00085 
00086         if ( p != s )
00087         {
00088                 ++p;
00089                 filename = p;
00090         }
00091         return filename;
00092 }
00093 
00095 inline core::stringc& deletePathFromFilename(core::stringc& filename)
00096 {
00097         // delete path from filename
00098         const c8 *s = filename.c_str();
00099         const c8* p = s + filename.size();
00100 
00101         // search for path separator or beginning
00102         while ( *p != '/' && *p != '\\' && p != s )
00103                 p--;
00104 
00105         if ( p != s )
00106         {
00107                 ++p;
00108                 filename = p;
00109         }
00110         return filename;
00111 }
00112 
00114 inline io::path& deletePathFromPath(io::path& filename, s32 pathCount)
00115 {
00116         // delete path from filename
00117         s32 i = filename.size();
00118 
00119         // search for path separator or beginning
00120         while ( i )
00121         {
00122                 if ( filename[i] == '/' || filename[i] == '\\' )
00123                 {
00124                         if ( --pathCount <= 0 )
00125                                 break;
00126                 }
00127                 i -= 1;
00128         }
00129 
00130         if ( i )
00131         {
00132                 filename [ i + 1 ] = 0;
00133                 filename.validate();
00134         }
00135         return filename;
00136 }
00137 
00140 inline s32 isInSameDirectory ( const io::path& path, const io::path& file )
00141 {
00142         s32 subA = 0;
00143         s32 subB = 0;
00144         s32 pos;
00145 
00146         if ( path.size() && !path.equalsn ( file, path.size() ) )
00147                 return -1;
00148 
00149         pos = 0;
00150         while ( (pos = path.findNext ( '/', pos )) >= 0 )
00151         {
00152                 subA += 1;
00153                 pos += 1;
00154         }
00155 
00156         pos = 0;
00157         while ( (pos = file.findNext ( '/', pos )) >= 0 )
00158         {
00159                 subB += 1;
00160                 pos += 1;
00161         }
00162 
00163         return subB - subA;
00164 }
00165 
00166 
00168 #undef isdigit
00169 #undef isspace
00170 #undef isupper
00171 inline s32 isdigit(s32 c) { return c >= '0' && c <= '9'; }
00172 inline s32 isspace(s32 c) { return c == ' ' || c == '\f' || c == '\n' || c == '\r' || c == '\t' || c == '\v'; }
00173 inline s32 isupper(s32 c) { return c >= 'A' && c <= 'Z'; }
00174 
00175 
00176 } // end namespace core
00177 } // end namespace irr
00178 
00179 #endif
00180 

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