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Annotation of 40BSD/lib/libpc/READE.c, revision 1.1

1.1     ! root        1: /* Copyright (c) 1979 Regents of the University of California */
        !             2: 
        !             3: static char sccsid[] = "@(#)READE.c 1.1 10/29/80";
        !             4: 
        !             5: #include "h00vars.h"
        !             6: #include "h01errs.h"
        !             7: 
        !             8: READE(curfile, name)
        !             9: 
        !            10:        register struct iorec   *curfile;
        !            11:        char                    *name;
        !            12: {
        !            13:        long                    data;
        !            14: 
        !            15:        register short  *sptr;
        !            16:        register int    len;
        !            17:        register int    nextlen;
        !            18:        register int    cnt;
        !            19:        char            *cp;
        !            20:        char            namebuf[NAMSIZ];
        !            21: 
        !            22:        if (curfile->funit & FWRITE) {
        !            23:                ERROR(EREADIT, curfile->pfname);
        !            24:                return;
        !            25:        }
        !            26:        UNSYNC(curfile);
        !            27:        if (fscanf(curfile->fbuf,
        !            28:            "%*[ \t\n]%74[abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789]",
        !            29:            namebuf) == 0) {
        !            30:                ERROR(ENUMNTFD, namebuf);
        !            31:                return;
        !            32:        }
        !            33:        curfile->funit |= SYNC;
        !            34:        for (len = 0; len < NAMSIZ && namebuf[len]; len++)
        !            35:                /* void */;
        !            36:        len++;
        !            37:        sptr = (short *)name;
        !            38:        cnt = *sptr++;
        !            39:        cp = name + sizeof (short) + *sptr;
        !            40:        do      {
        !            41:                nextlen = *sptr++;
        !            42:                nextlen = *sptr - nextlen;
        !            43:                if (nextlen == len && RELEQ(len, namebuf, cp)) {
        !            44:                        return *((short *) name) - cnt;
        !            45:                }
        !            46:                cp += nextlen;
        !            47:        } while (--cnt);
        !            48:        ERROR(ENUMNTFD, namebuf);
        !            49: }

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