1: #include "parms.h"
2: #include "structs.h"
3:
4: #ifdef RCSIDENT
5: static char rcsid[] = "$Header: lrsp.c,v 1.7 85/01/18 15:16:05 notes Rel $";
6: #endif RCSIDENT
7:
8: /*
9: * this routine takes in a note number, the io descriptors and
10: * and a LOGICAL response number to look for.
11: * It the returns the physical response index locations.
12: * It returns the response index record, and the offset within
13: * that record for the correct response
14: *
15: * Implemented the easy/cheap way. We just scan along the response
16: * chain, counting up the undeleted responses.
17: * Once we find the correct number, we return with the current
18: * set of pointers. What could be easier?
19: * In the event that we hit the end of responses before we find
20: * the response we want (e.g. the dummy wanted a nonexistent response)
21: * we return the index of the last response.
22: *
23: * Returns: 0 if all goes well
24: * -1 if bad logical response number
25: *
26: * Ray Essick May 22, 1981.
27: *
28: */
29:
30: lrsp (io, notenum, resp, rrec, poffset, recnum)
31: struct io_f *io;
32: struct resp_f *rrec;
33: int *recnum,
34: *poffset;
35: {
36: struct note_f nrec; /* note descriptor */
37: int prec; /* which physical response group we is looking in */
38:
39: getnrec (io, notenum, &nrec); /* get the note info */
40: if (resp <= 0)
41: return (-1); /* that was dumb */
42: if (resp > nrec.n_nresp)
43: return (-1); /* this too was dumb of him */
44: prec = nrec.n_rindx; /* record # of first response */
45: *poffset = 0;
46:
47: getrrec (io, prec, rrec); /* first resp block */
48: while (resp > rrec -> r_last) /* hi-speed along */
49: {
50: if ((prec = rrec -> r_next) == -1)
51: return (-1); /* broken chain */
52: getrrec (io, prec, rrec); /* passed this buffer */
53: }
54: /*
55: * We should now be in the block that contains the response
56: */
57: {
58: register int counted;
59: counted = (-1); /* active in this block */
60: *poffset = 0; /* start of block */
61: while (1) /* forever */
62: {
63: while (rrec -> r_stat[*poffset] & DELETED) /* skip holes */
64: {
65: ++*poffset; /* and try next */
66: x (*poffset == RESPSZ, "lrsp: r_last lied!");
67: }
68: counted++; /* a live one */
69: if (rrec -> r_first + counted == resp) /* got it */
70: {
71: break; /* get out */
72: }
73: ++*poffset; /* on to next */
74: /*
75: * this above is legit since we KNOW the resp is in this
76: * block so we'll never go over the end
77: */
78: }
79: }
80: *recnum = prec; /* set up return */
81: return 0;
82: }
Defined functions
lrsp
defined in line
30; used 11 times
Defined variables
rcsid
defined in line
5;
never used