58 lines
1.1 KiB
C++
58 lines
1.1 KiB
C++
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//_ stream.cpp Sun Jan 17 1988 Modified by: Walter Bright
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// Fri Aug 19 1989 Modified by: Steve Teale
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#include <stream.hpp>
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streambuf::streambuf()
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{
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fp = 0;
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base = gptr = eptr = pptr = 0;
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alloc = 0;
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}
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streambuf::streambuf(char* buf, int buflen)
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{
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fp = 0;
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setbuf(buf,buflen);
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alloc = 0;
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}
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streambuf::~streambuf()
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{
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if (alloc)
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delete base;
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}
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streambuf *streambuf::setbuf(char *buf,
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int buflen, int written)
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{
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base = buf;
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gptr = base;
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pptr = base + written;
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eptr = base + buflen;
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return this;
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}
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int streambuf::overflow(int c)
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{
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if (!base) { // No buffer allocated
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if (allocate() == EOF)
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return EOF;
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} else return EOF; // Buffer is full - nothing to be done
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if (c != EOF)
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*pptr++ = c;
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return c & 0xFF;
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}
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int streambuf::allocate()
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{
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base = new char[BUFSIZE];
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if (!base)
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return EOF;
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gptr = base;
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pptr = base;
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eptr = base + BUFSIZE;
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alloc = 1;
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return 0;
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}
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