Subversion Repositories planix.SVN

#include <u.h>
#include <libc.h>
#include <bio.h>
#include <ctype.h>
#include <ndb.h>
#include "ndbhf.h"

/*
 *  Parse a data base entry.  Entries may span multiple
 *  lines.  An entry starts on a left margin.  All subsequent
 *  lines must be indented by white space.  An entry consists
 *  of tuples of the forms:
 *      attribute-name
 *      attribute-name=value
 *      attribute-name="value with white space"
 *
 *  The parsing returns a 2-dimensional structure.  The first
 *  dimension joins all tuples. All tuples on the same line
 *  form a ring along the second dimension.
 */

/*
 *  parse the next entry in the file
 */
Ndbtuple*
ndbparse(Ndb *db)
{
        char *line;
        Ndbtuple *t;
        Ndbtuple *first, *last;
        int len;

        first = last = 0;
        for(;;){
                if((line = Brdline(&db->b, '\n')) == 0)
                        break;
                len = Blinelen(&db->b);
                if(line[len-1] != '\n')
                        break;
                if(first && !ISWHITE(*line) && *line != '#'){
                        Bseek(&db->b, -len, 1);
                        break;
                }
                t = _ndbparseline(line);
                if(t == 0)
                        continue;
                setmalloctag(t, getcallerpc(&db));
                if(first)
                        last->entry = t;
                else
                        first = t;
                last = t;
                while(last->entry)
                        last = last->entry;
        }
        ndbsetmalloctag(first, getcallerpc(&db));
        return first;
}