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Annotation of 43BSDTahoe/usr.lib/libpc/UNSYNC.c, revision 1.1

1.1     ! root        1: /* Copyright (c) 1979 Regents of the University of California */
        !             2: 
        !             3: static char sccsid[] = "@(#)UNSYNC.c 1.4 10/28/83";
        !             4: 
        !             5: #include "h00vars.h"
        !             6: 
        !             7: /*
        !             8:  * push back last char read to prepare for formatted read
        !             9:  */
        !            10: UNSYNC(curfile)
        !            11: 
        !            12:        register struct iorec   *curfile;
        !            13: {
        !            14:        if (curfile->funit & FWRITE) {
        !            15:                ERROR("%s: Attempt to read, but open for writing\n",
        !            16:                        curfile->pfname);
        !            17:                return;
        !            18:        }
        !            19:        if (curfile->funit & EOFF) {
        !            20:                ERROR("%s: Tried to read past end of file\n", curfile->pfname);
        !            21:                return;
        !            22:        }
        !            23:        if ((curfile->funit & SYNC) == 0) {
        !            24:                ungetc(*curfile->fileptr, curfile->fbuf);
        !            25:        }
        !            26:        curfile->funit &= ~EOLN;
        !            27:        curfile->funit |= SYNC;
        !            28: }

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