int
db_readline(char *lstart, int lsize)
{
db_force_whitespace(); /* synch output position */
db_lbuf_start = lstart;
db_lbuf_end = lstart + lsize - 1;
db_lc = lstart;
db_le = lstart;
while (!db_inputchar(cngetc()))
continue;
db_putchar('\n'); /* synch output position */
*db_le = 0;
return (db_le - db_lbuf_start);
}
int
db_readline(char *lstart, int lsize)
{
if (lsize != db_lhistlsize) {
/*
* (Re)initialize input line history. Throw away any
* existing history.
*/
db_lhist_nlines = sizeof(db_lhistory) / lsize;
db_lhistlsize = lsize;
db_lhistidx = -1;
}
db_lhistcur = db_lhistidx;
db_force_whitespace(); /* synch output position */
db_lbuf_start = lstart;
db_lbuf_end = lstart + lsize;
db_lc = lstart;
db_le = lstart;
while (!db_inputchar(cngetc()))
continue;
db_printf("\n"); /* synch output position */
*db_le = 0;
if (db_le - db_lbuf_start > 1) {
/* Maintain input line history for non-empty lines. */
if (++db_lhistidx == db_lhist_nlines) {
/* Rotate history. */
ovbcopy(db_lhistory + db_lhistlsize, db_lhistory,
db_lhistlsize * (db_lhist_nlines - 1));
db_lhistidx--;
}
bcopy(lstart, db_lhistory + db_lhistidx * db_lhistlsize,
db_lhistlsize);
}
return (db_le - db_lbuf_start);
}
