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44 lines
1.6 KiB
C
44 lines
1.6 KiB
C
/***********************************************************************
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*
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* f g e t s F u n c t i o n
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* ---------------------------
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* Copyright 1982 by Digital Research Inc. All rights reserved.
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*
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* "fgets" reads a string from a stream file (up to n-1 chars), and
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* returns pointer s (NULLPTR on end of file). The newline at the
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* end of line is included, NOT replaced, and the string is terminated
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* by a NULL.
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*
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* Calling sequence:
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* addr = fgets(saddr,n,stream)
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* Where:
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* saddr -> where the string is to go (no bounds check)
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* n = max # chars (inc. NULL) for saddr (assumed > 0)
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* stream-> where to get from
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* addr = saddr if all ok, NULLPTR o.w.
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*
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*****************************************************************************/
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#include <stdio.h>
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BYTE *fgets(str,maxc,sp) /*CLEAR Function */
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REG BYTE *str; /* string save area */
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REG WORD maxc; /* max size of string */
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REG FILE *sp; /* where to get from */
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{ /****************************/
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REG WORD c; /* char to test for eof */
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REG BYTE *sav; /* sav pointer for return */
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sav = str; /* remember this */
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while( --maxc > 0 && /* while there's still room */
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/* for getc and NULL */
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(c=getc(sp)) != FAILURE ) /* and read_char ok */
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{ /* */
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*str++ = c; /* store it */
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if( c == '\n' ) /* if end of line */
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break; /* stop the presses */
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} /* */
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*str = NULL; /* clean up string */
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if(c == FAILURE) /* if not cool */
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return(NULLPTR); /* then tell them so */
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return(sav); /* tell them is cool */
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} /****************************/
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