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util.h

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00001 /*
00002     Copyright (C) 1998 by Jorrit Tyberghein
00003 
00004     This library is free software; you can redistribute it and/or
00005     modify it under the terms of the GNU Library General Public
00006     License as published by the Free Software Foundation; either
00007     version 2 of the License, or (at your option) any later version.
00008 
00009     This library is distributed in the hope that it will be useful,
00010     but WITHOUT ANY WARRANTY; without even the implied warranty of
00011     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012     Library General Public License for more details.
00013 
00014     You should have received a copy of the GNU Library General Public
00015     License along with this library; if not, write to the Free
00016     Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
00017 */
00018 
00019 #ifndef __CS_UTIL_H__
00020 #define __CS_UTIL_H__
00021 
00022 #include <stdio.h>
00023 #include "csextern.h"
00024 #include "csunicode.h"
00025 
00039 extern CS_CSUTIL_EXPORT char *csStrNew (const char *s);
00044 extern CS_CSUTIL_EXPORT char *csStrNew (const wchar_t *s);
00048 extern CS_CSUTIL_EXPORT wchar_t* csStrNewW (const wchar_t *s);
00053 extern CS_CSUTIL_EXPORT wchar_t* csStrNewW (const char *s);
00054 
00061 extern CS_CSUTIL_EXPORT int csStrCaseCmp(char const* str1, char const* str2);
00062 
00070 extern CS_CSUTIL_EXPORT int csStrNCaseCmp(char const* str1, char const* str2,
00071   size_t n);
00072 
00085 struct csWtoC
00086 {
00087 private:
00088   char* s;
00089 public:
00094   csWtoC (const wchar_t* ws)
00095   { s = csStrNew (ws); }
00099   ~csWtoC ()
00100   { delete[] s; }
00104   operator const char* () const
00105   { return s; }
00106 };
00107 
00114 struct csCtoW
00115 {
00116 private:
00117   wchar_t* ws;
00118 public:
00123   csCtoW (const char* s)
00124   { ws = csStrNewW (s); }
00128   ~csCtoW ()
00129   { delete[] ws; }
00133   operator const wchar_t* () const
00134   { return ws; }
00135 };
00136 
00146 extern CS_CSUTIL_EXPORT char *csExpandName (const char *iName);
00147 
00151 extern CS_CSUTIL_EXPORT void csSplitPath (const char *iPathName, char *oPath,
00152   size_t iPathSize, char *oName, size_t iNameSize);
00153 
00162 extern CS_CSUTIL_EXPORT bool csGlobMatches (const char *fName, const char *fMask);
00163 
00168 CS_CSUTIL_EXPORT int csFindNearestPowerOf2 (int n);
00169 
00171 CS_CSUTIL_EXPORT bool csIsPowerOf2 (int n);
00172 
00174 static inline int csLog2 (int n)
00175 {
00176   const unsigned int b[] = {0x2, 0xC, 0xF0, 0xFF00, 0xFFFF0000};
00177   const unsigned int S[] = {1, 2, 4, 8, 16};
00178   int i;
00179 
00180   register unsigned int c = 0; // result of log2(v) will go here
00181   for (i = 4; i >= 0; i--) // unroll for speed...
00182   {
00183     if (n & b[i])
00184     {
00185       n >>= S[i];
00186       c |= S[i];
00187     } 
00188   }
00189   return c;
00190 }
00191 
00197 CS_CSUTIL_EXPORT void csFindReplace (char *dest, const char *src,
00198   const char *search, const char *replace, int max);
00199 
00202 #endif // __CS_UTIL_H__

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