67 lines
1.3 KiB
C++
67 lines
1.3 KiB
C++
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/***
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* istrget.cpp - definitions for istream class get() member functions
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*
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* Copyright (c) 1991-2001, Microsoft Corporation. All rights reserved.
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*
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*Purpose:
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* Definitions of get() member functions for istream class.
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* [AT&T C++]
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*
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*Revision History:
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* 09-26-91 KRS Created. Split off from istream.cxx for granularity.
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* 06-14-95 CFW Comment cleanup.
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*
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*******************************************************************************/
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#include <cruntime.h>
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#include <internal.h>
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#include <iostream.h>
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#pragma hdrstop
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// unformatted input functions
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int istream::get()
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{
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int c;
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if (ipfx(1)) // resets x_gcount
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{
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if ((c=bp->sbumpc())==EOF)
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state |= ios::eofbit;
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else
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x_gcount++;
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isfx();
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return c;
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}
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return EOF;
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}
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// signed and unsigned char make inline calls to this:
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istream& istream::get( char& c)
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{
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int temp;
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if (ipfx(1)) // resets x_gcount
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{
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if ((temp=bp->sbumpc())==EOF)
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state |= (ios::failbit|ios::eofbit);
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else
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x_gcount++;
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c = (char) temp;
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isfx();
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}
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return *this;
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}
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// called by signed and unsigned char versions
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istream& istream::read(char * ptr, int n)
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{
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if (ipfx(1)) // resets x_gcount
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{
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x_gcount = bp->sgetn(ptr, n);
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if ((unsigned)x_gcount < (unsigned)n)
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state |= (ios::failbit|ios::eofbit);
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isfx();
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}
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return *this;
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}
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