#include "config.h"
#if !defined(lint) && !defined(SCCSID)
#if 0
static char sccsid[] = "@(#)hist.c 8.1 (Berkeley) 6/4/93";
#else
__RCSID("$NetBSD: hist.c,v 1.10 2002/03/18 16:00:53 christos Exp $");
#endif
#endif
#include <stdlib.h>
#include "el.h"
protected int
hist_init(EditLine *el)
{
el->el_history.fun = NULL;
el->el_history.ref = NULL;
el->el_history.buf = (char *) el_malloc(EL_BUFSIZ);
el->el_history.sz = EL_BUFSIZ;
if (el->el_history.buf == NULL)
return (-1);
el->el_history.last = el->el_history.buf;
return (0);
}
protected void
hist_end(EditLine *el)
{
el_free((ptr_t) el->el_history.buf);
el->el_history.buf = NULL;
}
protected int
hist_set(EditLine *el, hist_fun_t fun, ptr_t ptr)
{
el->el_history.ref = ptr;
el->el_history.fun = fun;
return (0);
}
protected el_action_t
hist_get(EditLine *el)
{
const char *hp;
int h;
if (el->el_history.eventno == 0) {
(void) strncpy(el->el_line.buffer, el->el_history.buf,
el->el_history.sz);
el->el_line.lastchar = el->el_line.buffer +
(el->el_history.last - el->el_history.buf);
#ifdef KSHVI
if (el->el_map.type == MAP_VI)
el->el_line.cursor = el->el_line.buffer;
else
#endif
el->el_line.cursor = el->el_line.lastchar;
return (CC_REFRESH);
}
if (el->el_history.ref == NULL)
return (CC_ERROR);
hp = HIST_FIRST(el);
if (hp == NULL)
return (CC_ERROR);
for (h = 1; h < el->el_history.eventno; h++)
if ((hp = HIST_NEXT(el)) == NULL) {
el->el_history.eventno = h;
return (CC_ERROR);
}
(void) strncpy(el->el_line.buffer, hp,
(size_t)(el->el_line.limit - el->el_line.buffer));
el->el_line.lastchar = el->el_line.buffer + strlen(el->el_line.buffer);
if (el->el_line.lastchar > el->el_line.buffer) {
if (el->el_line.lastchar[-1] == '\n')
el->el_line.lastchar--;
if (el->el_line.lastchar[-1] == ' ')
el->el_line.lastchar--;
if (el->el_line.lastchar < el->el_line.buffer)
el->el_line.lastchar = el->el_line.buffer;
}
#ifdef KSHVI
if (el->el_map.type == MAP_VI)
el->el_line.cursor = el->el_line.buffer;
else
#endif
el->el_line.cursor = el->el_line.lastchar;
return (CC_REFRESH);
}
protected int
hist_list(EditLine *el, int argc, const char **argv)
{
const char *str;
if (el->el_history.ref == NULL)
return (-1);
for (str = HIST_LAST(el); str != NULL; str = HIST_PREV(el))
(void) fprintf(el->el_outfile, "%d %s",
el->el_history.ev.num, str);
return (0);
}
protected int
hist_enlargebuf(EditLine *el, size_t oldsz, size_t newsz)
{
char *newbuf;
newbuf = realloc(el->el_history.buf, newsz);
if (!newbuf)
return 0;
(void) memset(&newbuf[oldsz], '\0', newsz - oldsz);
el->el_history.last = newbuf +
(el->el_history.last - el->el_history.buf);
el->el_history.buf = newbuf;
el->el_history.sz = newsz;
return 1;
}