gecko-dev/widget/public/nsStringUtil.h

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2.5 KiB
C

/* -*- Mode: c++; tab-width: 2; indent-tabs-mode: nil; -*- */
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// Convience macros for converting nsString's to chars +
// creating temporary char[] bufs.
#ifndef NS_STR_UTIL_H
#define NS_STR_UTIL_H
// temporary char[] macro
// Convience MACROS which use a static char array if possible to reduce
// memory fragmentation, otherwise they allocate a char[] which must be
// freed. REMEMBER to always use the NS_FREE_CHAR_BUF after using the
// NS_ALLOC_CHAR_BUF. You can not nest NS_ALLOC_CHAR_BUF's.
#define NS_ALLOC_CHAR_BUF(aBuf, aSize, aActualSize) \
int _ns_tmpActualSize = aActualSize; \
char _ns_smallBuffer[aSize]; \
char * const aBuf = _ns_tmpActualSize <= aSize ? _ns_smallBuffer : new char[_ns_tmpActualSize];
#define NS_FREE_CHAR_BUF(aBuf) \
if (aBuf != _ns_smallBuffer) \
delete[] aBuf;
#endif // !defined(NS_STR_UTIL_H)