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Annotation of researchv10dc/cmd/pascal/libpc/READ4.c, revision 1.1.1.1

1.1       root        1: /* Copyright (c) 1979 Regents of the University of California */
                      2: 
                      3: static char sccsid[] = "@(#)READ4.c 1.5 6/10/81";
                      4: 
                      5: #include "h00vars.h"
                      6: 
                      7: long
                      8: READ4(curfile)
                      9: 
                     10:        register struct iorec   *curfile;
                     11: {
                     12:        long                    data;
                     13:        int                     retval;
                     14: 
                     15:        if (curfile->funit & FWRITE) {
                     16:                ERROR("%s: Attempt to read, but open for writing\n",
                     17:                        curfile->pfname);
                     18:                return;
                     19:        }
                     20:        UNSYNC(curfile);
                     21:        retval = fscanf(curfile->fbuf, "%ld", &data);
                     22:        if (retval == EOF) {
                     23:                ERROR("%s: Tried to read past end of file\n", curfile->pfname);
                     24:                return;
                     25:        }
                     26:        if (retval == 0) {
                     27:                ERROR("%s: Bad data found on integer read\n", curfile->pfname);
                     28:                return;
                     29:        }
                     30:        curfile->funit &= ~EOLN;
                     31:        curfile->funit |= SYNC;
                     32:        return data;
                     33: }

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