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Annotation of researchv8dc/cmd/cfront/libC/stream/streambuf.c, revision 1.1.1.1

1.1       root        1: #include "stream.h"
                      2: 
                      3: /*
                      4:        Allocate some space for the buffer.
                      5:        Returns:        EOF on error
                      6:                        0 on success
                      7: */
                      8: int streambuf.allocate()
                      9: {
                     10:        if (base == NULL) {
                     11:                if ((base = new char[BUFSIZE]) != NULL) {
                     12:                        pptr = gptr = base;
                     13:                        eptr = base + BUFSIZE;
                     14:                        alloc = 1;
                     15:                        return 0;
                     16:                } else
                     17:                        return EOF;
                     18:        }
                     19:        return 0;
                     20: }
                     21: 
                     22: /*
                     23:        Come here on a put to a full buffer.  Allocate the buffer if 
                     24:        it is uninitialized.
                     25:        Returns:        EOF on error
                     26:                        the argument on success
                     27: */
                     28: virtual int streambuf.overflow(int c)
                     29: {
                     30:        if (allocate() == EOF) return EOF;
                     31:        if (c != EOF) *pptr++ = c;
                     32:        return c&0377;
                     33: }
                     34: 
                     35: /*
                     36:        Fill a buffer.
                     37:        Returns:        EOF on error or end of input
                     38:                        next character on success
                     39: */
                     40: virtual int streambuf.underflow()
                     41: {
                     42:        return EOF;
                     43: }

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