/usr/include/crystalspace-2.0/csutil/util.h is in libcrystalspace-dev 2.0+dfsg-1build1.
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Copyright (C) 1998 by Jorrit Tyberghein
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free
Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __CS_UTIL_H__
#define __CS_UTIL_H__
#include <stdio.h>
#include "csextern.h"
#include "csutil/csunicode.h"
/**\file
* Miscellaneous utilities
*/
/**\addtogroup util
* @{ */
namespace CS
{
/**
* Allocate a char string with cs_malloc() and copy the string into the
* newly allocated storage.
* This is a handy method for copying strings, in fact it is an analogue
* of the strdup() function from string.h, but using cs_malloc(). (Also,
* strdup() is not present on some platforms). To free the pointer the
* caller should call cs_free().
*/
CS_CRYSTALSPACE_EXPORT char* StrDup (const char *s);
/**
* Allocate a char string with cs_malloc() and copy an UTF-8 version of the
* string into the newly allocated storage.
* \sa StrDup(const char*)
*/
CS_CRYSTALSPACE_EXPORT char* StrDup (const wchar_t *s);
/**
* Allocate a wide char string with cs_malloc() and copy the string into
* the newly allocated storage.
* \sa StrDup(const char*)
*/
CS_CRYSTALSPACE_EXPORT wchar_t* StrDupW (const wchar_t *s);
/**
* Allocate a wide char string with cs_malloc() and copy the string
* converted from UTF-8 into the newly allocated storage.
* \sa StrDup(const char*)
*/
CS_CRYSTALSPACE_EXPORT wchar_t* StrDupW (const char *s);
}
///\internal Helper function needed by the csStrNew variants below
CS_CRYSTALSPACE_EXPORT size_t cs_wcslen (wchar_t const* s);
/**
* Allocate a new char [] and copy the string into the newly allocated
* storage.
* This is a handy method for copying strings, in fact it is the C++ analogue
* of the strdup() function from string.h (strdup() is not present on some
* platforms). To free the pointer the caller should call delete[].
* \sa CS::StrDup which is slightly more efficient
*/
inline char *csStrNew (const char *s)
{
if (!s) return 0;
size_t sl = strlen (s) + 1;
char *r = new char [sl];
memcpy (r, s, sl);
return r;
}
/**
* Allocate a new char [] and copy an UTF-8 version of the string into
* the newly allocated storage.
* \sa csStrNew(const char*)
* \sa CS::StrDup which is slightly more efficient
*/
inline char *csStrNew (const wchar_t *s)
{
if (!s) return 0;
char* cs = CS::StrDup (s);
size_t sl = strlen (cs) + 1;
char *r = new char [sl];
memcpy (r, cs, sl);
cs_free (cs);
return r;
}
/**
* Allocate a new widechar [] and copy the string into the newly allocated
* storage.
* \sa csStrNew(const char*)
* \sa CS::StrDupW which is slightly more efficient
*/
inline wchar_t* csStrNewW (const wchar_t *s)
{
if (!s) return 0;
size_t sl = cs_wcslen (s) + 1;
wchar_t *r = new wchar_t [sl];
memcpy (r, s, sl * sizeof (wchar_t));
return r;
}
/**
* Allocate a new widechar [] and copy the string converted from UTF-8 into
* the newly allocated storage.
* \sa csStrNew(const char*)
* \sa CS::StrDupW which is slightly more efficient
*/
inline wchar_t* csStrNewW (const char *s)
{
if (!s) return 0;
wchar_t* ws = CS::StrDupW (s);
size_t sl = cs_wcslen (ws) + 1;
wchar_t *r = new wchar_t [sl];
memcpy (r, ws, sl * sizeof (wchar_t));
cs_free (ws);
return r;
}
/**
* Perform case-insensitive string comparison. Returns a negative number if \p
* str1 is less than \p str2, zero if they are equal, or a positive number if
* \p str1 is greater than \p str2. For best portability, use function rather
* than strcasecmp() or stricmp().
*/
CS_CRYSTALSPACE_EXPORT int csStrCaseCmp(char const* str1, char const* str2);
/**
* Perform case-insensitive string comparison of the first \p n characters of
* \p str1 and \p str2. Returns a negative number if the n-character prefix of
* \p str1 is less than \p str2, zero if they are equal, or a positive number
* if the prefix of \p str1 is greater than \p str2. For best portability, use
* function rather than strncasecmp() or strnicmp().
*/
CS_CRYSTALSPACE_EXPORT int csStrNCaseCmp(char const* str1, char const* str2,
size_t n);
/**
* Helper class to convert wchar_t* to char* (UTF-8 encoded) strings for use
* as function parameters.
* Use of this helper class is more convenient than a csStrNew() / delete[]
* pair, but essentially does the same (with the convenience of automatic
* cleanup).
* \code
* wchar_t* wstr = L"Hello World";
* ...
* iNativeWindow* natwin = ... ;
* natwin->SetTitle (csWtoC (wstr));
* \endcode
*/
struct csWtoC
{
private:
char* s;
public:
/**
* Constructor.
* Stores an UTF-8 converted version of \p ws internally.
*/
csWtoC (const wchar_t* ws)
{ s = CS::StrDup (ws); }
/**
* Deletes the internally stored string.
*/
~csWtoC ()
{ cs_free (s); }
/**
* Retrieve the converted string.
*/
operator const char* () const
{ return s; }
};
/**
* Helper class to convert char* (UTF-8 encoded )to wchar_t* strings for use
* as function parameters.
* Use of this helper class is more convenient than a csStrNewW() / delete[]
* pair, but essentially does the same (with the convenience of automatic
* cleanup).
*/
struct csCtoW
{
private:
wchar_t* ws;
public:
/**
* Constructor.
* Stores an UTF-16 converted version of \p s internally.
*/
csCtoW (const char* s)
{ ws = CS::StrDupW (s); }
/**
* Deletes the internally stored string.
*/
~csCtoW ()
{ cs_free (ws); }
/**
* Retrieve the converted string.
*/
operator const wchar_t* () const
{ return ws; }
};
/**
* Expand a filename if it contains shortcuts.
* Currently the following macros are recognised and expanded:
* <pre>
* '.', '~', '..', 'drive:' (on DOS/Win32/OS2)
* </pre>
* The returned filename is always absolute, i.e. it always starts
* from root. Return a string allocated with csStrNew().
*/
CS_CRYSTALSPACE_EXPORT char *csExpandName (const char *iName);
/**
* Split a pathname into separate path and name.
*/
CS_CRYSTALSPACE_EXPORT void csSplitPath (const char *iPathName, char *oPath,
size_t iPathSize, char *oName, size_t iNameSize);
/**
* Perform shell-like filename \e globbing (pattern matching).
* The special token \p * matches zero or more characters, and the token \p ?
* matches exactly one character. Examples: "*a*.txt", "*a?b*", "*"
* Character-classes \p [a-z] are not understood by this function.
* \remark If you want case-insensitive comparison, convert \p fName and
* \p fMask to upper- or lower-case first.
*/
CS_CRYSTALSPACE_EXPORT bool csGlobMatches (const char *fName,
const char *fMask);
/**
* Finds the smallest number that is a power of two and is larger or
* equal to n.
*/
static inline int csFindNearestPowerOf2 (int n)
{
int v=n;
v--;
v |= v >> 1;
v |= v >> 2;
v |= v >> 4;
v |= v >> 8;
v |= v >> 16;
v++;
return v;
}
/// Returns true if n is a power of two.
static inline bool csIsPowerOf2 (int n)
{
return !(n & (n - 1)) && n; // (n-1) ^ n >= n;
}
/// Find the log2 of 32bit argument.
CS_CRYSTALSPACE_EXPORT int csLog2 (int n);
/**
* Given \p src and \p dest, which are already allocated, copy \p source to \p
* dest. But, do not copy \p search, instead replace that with \p replace
* string. \p max is size in bytes of \p dest.
*/
CS_CRYSTALSPACE_EXPORT void csReplaceAll (char *dest, const char *src,
const char *search, const char *replace, int max);
/** @} */
#endif // __CS_UTIL_H__
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