Subversion Repositories planix.SVN

Rev

Rev 2 | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
2 - 1 
#include <u.h>
2 
#include <libc.h>
3 
#include <bio.h>
4 
#include <ctype.h>
5 
#include <ndb.h>
6 
#include "ndbhf.h"
7 
 
8 
 
9 
/*
10 
 *  parse a single tuple
11 
 */
12 
char*
13 
_ndbparsetuple(char *cp, Ndbtuple **tp)
14 
{
15 
	char *p;
16 
	int len;
17 
	Ndbtuple *t;
18 
 
19 
	/* a '#' starts a comment lasting till new line */
20 
	EATWHITE(cp);
21 
	if(*cp == '#' || *cp == '\n')
22 
		return 0;
23 
 
24 
	t = ndbnew(nil, nil);
25 
	setmalloctag(t, getcallerpc(&cp));
26 
	*tp = t;
27 
 
28 
	/* parse attribute */
29 
	p = cp;
30 
	while(*cp != '=' && !ISWHITE(*cp) && *cp != '\n')
31 
		cp++;
32 
	len = cp - p;
33 
	if(len >= Ndbalen)
34 
		len = Ndbalen-1;
35 
	strncpy(t->attr, p, len);
36 
 
37 
	/* parse value */
38 
	EATWHITE(cp);
39 
	if(*cp == '='){
40 
		cp++;
41 
		if(*cp == '"'){
42 
			p = ++cp;
43 
			while(*cp != '\n' && *cp != '"')
44 
				cp++;
45 
			len = cp - p;
46 
			if(*cp == '"')
47 
				cp++;
48 
		} else if(*cp == '#'){
49 
			len = 0;
50 
		} else {
51 
			p = cp;
52 
			while(!ISWHITE(*cp) && *cp != '\n')
53 
				cp++;
54 
			len = cp - p;
55 
		}
56 
		ndbsetval(t, p, len);
57 
	}
58 
 
59 
	return cp;
60 
}
61 
 
62 
/*
63 
 *  parse all tuples in a line.  we assume that the
64 
 *  line ends in a '\n'.
65 
 *
66 
 *  the tuples are linked as a list using ->entry and
67 
 *  as a ring using ->line.
68 
 */
69 
Ndbtuple*
70 
_ndbparseline(char *cp)
71 
{
72 
	Ndbtuple *t;
73 
	Ndbtuple *first, *last;
74 
 
75 
	first = last = 0;
76 
	while(*cp != '#' && *cp != '\n'){
77 
		t = 0;
78 
		cp = _ndbparsetuple(cp, &t);
79 
		if(cp == 0)
80 
			break;
81 
		if(first){
82 
			last->line = t;
83 
			last->entry = t;
84 
		} else
85 
			first = t;
86 
		last = t;
87 
		t->line = 0;
88 
		t->entry = 0;
89 
		setmalloctag(t, getcallerpc(&cp));
90 
	}
91 
	if(first)
92 
		last->line = first;
93 
	ndbsetmalloctag(first, getcallerpc(&cp));
94 
	return first;
95 
}