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Annotation of 43BSDReno/lib/libpc/READE.c, revision 1.1.1.1

1.1       root        1: /*-
                      2:  * Copyright (c) 1979 The Regents of the University of California.
                      3:  * All rights reserved.
                      4:  *
                      5:  * Redistribution and use in source and binary forms are permitted
                      6:  * provided that: (1) source distributions retain this entire copyright
                      7:  * notice and comment, and (2) distributions including binaries display
                      8:  * the following acknowledgement:  ``This product includes software
                      9:  * developed by the University of California, Berkeley and its contributors''
                     10:  * in the documentation or other materials provided with the distribution
                     11:  * and in all advertising materials mentioning features or use of this
                     12:  * software. Neither the name of the University nor the names of its
                     13:  * contributors may be used to endorse or promote products derived
                     14:  * from this software without specific prior written permission.
                     15:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
                     16:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
                     17:  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
                     18:  */
                     19: 
                     20: #ifndef lint
                     21: static char sccsid[] = "@(#)READE.c    1.8 (Berkeley) 4/9/90";
                     22: #endif /* not lint */
                     23: 
                     24: #include "h00vars.h"
                     25: 
                     26: long
                     27: READE(curfile, name)
                     28: 
                     29:        register struct iorec   *curfile;
                     30:        char                    *name;
                     31: {
                     32:        register short  *sptr;
                     33:        register int    len;
                     34:        register int    nextlen;
                     35:        register int    cnt;
                     36:        char            *cp;
                     37:        char            namebuf[NAMSIZ];
                     38:        int             retval;
                     39: 
                     40:        if (curfile->funit & FWRITE) {
                     41:                ERROR("%s: Attempt to read, but open for writing\n",
                     42:                        curfile->pfname);
                     43:        }
                     44:        UNSYNC(curfile);
                     45:        retval = fscanf(curfile->fbuf,
                     46:            "%*[ \t\n]%74[abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789]",
                     47:            namebuf);
                     48:        if (retval == EOF) {
                     49:                ERROR("%s: Tried to read past end of file\n", curfile->pfname);
                     50:        }
                     51:        if (retval == 0)
                     52:                goto ename;
                     53:        for (len = 0; len < NAMSIZ && namebuf[len]; len++)
                     54:                /* void */;
                     55:        len++;
                     56:        sptr = (short *)name;
                     57:        cnt = *sptr++;
                     58:        cp = name + sizeof (short) + *sptr;
                     59:        do      {
                     60:                nextlen = *sptr++;
                     61:                nextlen = *sptr - nextlen;
                     62:                if (nextlen == len && RELEQ(len, namebuf, cp)) {
                     63:                        return *((short *) name) - cnt;
                     64:                }
                     65:                cp += (int)nextlen;
                     66:        } while (--cnt);
                     67: ename:
                     68:        ERROR("Unknown name \"%s\" found on enumerated type read\n", namebuf);
                     69:        return 0;
                     70: }

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