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lightning-sunbird  0.9+nobinonly
nsStringUtil.h
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00037 
00038 // Convience macros for converting nsString's to chars +
00039 // creating temporary char[] bufs.
00040 
00041 #ifndef NS_STR_UTIL_H
00042 #define NS_STR_UTIL_H
00043 
00044 // temporary char[] macro
00045 
00046 // Convience MACROS which use a static char array if possible to reduce
00047 // memory fragmentation, otherwise they allocate a char[] which must be
00048 // freed.  REMEMBER to always use the NS_FREE_CHAR_BUF after using the
00049 // NS_ALLOC_CHAR_BUF. You can not nest NS_ALLOC_CHAR_BUF's. 
00050 
00051 #define NS_ALLOC_CHAR_BUF(aBuf, aSize, aActualSize) \
00052   int _ns_tmpActualSize = aActualSize;              \
00053   char _ns_smallBuffer[aSize];                      \
00054   char * const aBuf = _ns_tmpActualSize <= aSize ? _ns_smallBuffer : new char[_ns_tmpActualSize]; 
00055 
00056 #define NS_FREE_CHAR_BUF(aBuf)   \
00057   if (aBuf != _ns_smallBuffer) \
00058    delete[] aBuf;
00059 
00060 #endif // !defined(NS_STR_UTIL_H)