NetBSD-5.0.2/dist/nvi/ip/ip_funcs.c
/* $NetBSD: ip_funcs.c,v 1.1.1.2 2008/05/18 14:31:24 aymeric Exp $ */
/*-
* Copyright (c) 1996
* Keith Bostic. All rights reserved.
*
* See the LICENSE file for redistribution information.
*/
#include "config.h"
#ifndef lint
static const char sccsid[] = "Id: ip_funcs.c,v 8.23 2001/06/25 15:19:23 skimo Exp (Berkeley) Date: 2001/06/25 15:19:23";
#endif /* not lint */
#include <sys/types.h>
#include <sys/queue.h>
#include <sys/time.h>
#include <bitstring.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "../common/common.h"
#include "../vi/vi.h"
#include "../ipc/ip.h"
#include "extern.h"
/*
* ip_addstr --
* Add len bytes from the string at the cursor, advancing the cursor.
*
* PUBLIC: int ip_waddstr __P((SCR *, const CHAR_T *, size_t));
*/
int
ip_waddstr(SCR *sp, const CHAR_T *str, size_t len)
{
IP_BUF ipb;
IP_PRIVATE *ipp;
int iv, rval;
ipp = IPP(sp);
ipb.code = SI_WADDSTR;
ipb.len1 = len * sizeof(CHAR_T);
ipb.str1 = (char *)str;
rval = vi_send(ipp->o_fd, "a", &ipb);
/* XXXX */
ipp->col += len;
return (rval);
}
/*
* ip_addstr --
* Add len bytes from the string at the cursor, advancing the cursor.
*
* PUBLIC: int ip_addstr __P((SCR *, const char *, size_t));
*/
int
ip_addstr(SCR *sp, const char *str, size_t len)
{
IP_BUF ipb;
IP_PRIVATE *ipp;
int iv, rval;
ipp = IPP(sp);
/*
* If ex isn't in control, it's the last line of the screen and
* it's a split screen, use inverse video.
*/
iv = 0;
if (!F_ISSET(sp, SC_SCR_EXWROTE) &&
ipp->row == LASTLINE(sp) && IS_SPLIT(sp)) {
iv = 1;
ip_attr(sp, SA_INVERSE, 1);
}
ipb.code = SI_ADDSTR;
ipb.len1 = len;
ipb.str1 = str;
rval = vi_send(ipp->o_fd, "a", &ipb);
/* XXXX */
ipp->col += len;
if (iv)
ip_attr(sp, SA_INVERSE, 0);
return (rval);
}
/*
* ip_attr --
* Toggle a screen attribute on/off.
*
* PUBLIC: int ip_attr __P((SCR *, scr_attr_t, int));
*/
int
ip_attr(SCR *sp, scr_attr_t attribute, int on)
{
IP_BUF ipb;
IP_PRIVATE *ipp = IPP(sp);
if (attribute == SA_ALTERNATE) {
if (on) F_SET(ipp, IP_ON_ALTERNATE);
else F_CLR(ipp, IP_ON_ALTERNATE);
}
ipb.code = SI_ATTRIBUTE;
ipb.val1 = attribute;
ipb.val2 = on;
return (vi_send(ipp->o_fd, "12", &ipb));
}
/*
* ip_baud --
* Return the baud rate.
*
* PUBLIC: int ip_baud __P((SCR *, u_long *));
*/
int
ip_baud(SCR *sp, u_long *ratep)
{
*ratep = 9600; /* XXX: Translation: fast. */
return (0);
}
/*
* ip_bell --
* Ring the bell/flash the screen.
*
* PUBLIC: int ip_bell __P((SCR *));
*/
int
ip_bell(SCR *sp)
{
IP_BUF ipb;
IP_PRIVATE *ipp = IPP(sp);
ipb.code = SI_BELL;
return (vi_send(ipp->o_fd, NULL, &ipb));
}
/*
* ip_busy --
* Display a busy message.
*
* PUBLIC: void ip_busy __P((SCR *, const char *, busy_t));
*/
void
ip_busy(SCR *sp, const char *str, busy_t bval)
{
IP_BUF ipb;
IP_PRIVATE *ipp = IPP(sp);
switch (bval) {
case BUSY_ON:
ipb.code = SI_BUSY_ON;
ipb.str1 = str;
ipb.len1 = strlen(str);
(void)vi_send(ipp->o_fd, "a", &ipb);
break;
case BUSY_OFF:
ipb.code = SI_BUSY_OFF;
(void)vi_send(ipp->o_fd, NULL, &ipb);
break;
case BUSY_UPDATE:
break;
}
return;
}
/*
* ip_child --
* Prepare child.
*
* PUBLIC: int ip_child __P((SCR *));
*/
int
ip_child(SCR *sp)
{
IP_PRIVATE *ipp = IPP(sp);
if (ipp->t_fd != -1) {
dup2(ipp->t_fd, 0);
dup2(ipp->t_fd, 1);
dup2(ipp->t_fd, 2);
close(ipp->t_fd);
}
return 0;
}
/*
* ip_clrtoeol --
* Clear from the current cursor to the end of the line.
*
* PUBLIC: int ip_clrtoeol __P((SCR *));
*/
int
ip_clrtoeol(SCR *sp)
{
IP_BUF ipb;
IP_PRIVATE *ipp = IPP(sp);
/* Temporary hack until we can pass screen pointers
* or name screens
*/
if (IS_VSPLIT(sp)) {
size_t x, y, spcnt;
IP_PRIVATE *ipp;
int error;
ipp = IPP(sp);
y = ipp->row;
x = ipp->col;
error = 0;
for (spcnt = sp->cols - x;
spcnt > 0 && ! error; --spcnt)
error = ip_addstr(sp, " ", 1);
if (sp->coff == 0)
error |= ip_addstr(sp, "|", 1);
error |= ip_move(sp, y, x);
return error;
}
ipb.code = SI_CLRTOEOL;
return (vi_send(ipp->o_fd, NULL, &ipb));
}
/*
* ip_cursor --
* Return the current cursor position.
*
* PUBLIC: int ip_cursor __P((SCR *, size_t *, size_t *));
*/
int
ip_cursor(SCR *sp, size_t *yp, size_t *xp)
{
IP_PRIVATE *ipp;
ipp = IPP(sp);
*yp = ipp->row;
*xp = ipp->col;
return (0);
}
/*
* ip_deleteln --
* Delete the current line, scrolling all lines below it.
*
* PUBLIC: int ip_deleteln __P((SCR *));
*/
int
ip_deleteln(SCR *sp)
{
IP_BUF ipb;
IP_PRIVATE *ipp = IPP(sp);
/*
* This clause is required because the curses screen uses reverse
* video to delimit split screens. If the screen does not do this,
* this code won't be necessary.
*
* If the bottom line was in reverse video, rewrite it in normal
* video before it's scrolled.
*/
if (!F_ISSET(sp, SC_SCR_EXWROTE) && IS_SPLIT(sp)) {
ipb.code = SI_REWRITE;
ipb.val1 = RLNO(sp, LASTLINE(sp));
if (vi_send(ipp->o_fd, "1", &ipb))
return (1);
}
/*
* The bottom line is expected to be blank after this operation,
* and other screens must support that semantic.
*/
ipb.code = SI_DELETELN;
return (vi_send(ipp->o_fd, NULL, &ipb));
}
/*
* ip_discard --
* Discard a screen.
*
* PUBLIC: int ip_discard __P((SCR *, SCR **));
*/
int
ip_discard(SCR *discardp, SCR **acquirep)
{
return (0);
}
/*
* ip_ex_adjust --
* Adjust the screen for ex.
*
* PUBLIC: int ip_ex_adjust __P((SCR *, exadj_t));
*/
int
ip_ex_adjust(SCR *sp, exadj_t action)
{
abort();
/* NOTREACHED */
}
/*
* ip_insertln --
* Push down the current line, discarding the bottom line.
*
* PUBLIC: int ip_insertln __P((SCR *));
*/
int
ip_insertln(SCR *sp)
{
IP_BUF ipb;
IP_PRIVATE *ipp = IPP(sp);
ipb.code = SI_INSERTLN;
return (vi_send(ipp->o_fd, NULL, &ipb));
}
/*
* ip_keyval --
* Return the value for a special key.
*
* PUBLIC: int ip_keyval __P((SCR *, scr_keyval_t, CHAR_T *, int *));
*/
int
ip_keyval(SCR *sp, scr_keyval_t val, CHAR_T *chp, int *dnep)
{
/*
* VEOF, VERASE and VKILL are required by POSIX 1003.1-1990,
* VWERASE is a 4BSD extension.
*/
switch (val) {
case KEY_VEOF:
*dnep = '\004'; /* ^D */
break;
case KEY_VERASE:
*dnep = '\b'; /* ^H */
break;
case KEY_VKILL:
*dnep = '\025'; /* ^U */
break;
#ifdef VWERASE
case KEY_VWERASE:
*dnep = '\027'; /* ^W */
break;
#endif
default:
*dnep = 1;
break;
}
return (0);
}
/*
* ip_move --
* Move the cursor.
*
* PUBLIC: int ip_move __P((SCR *, size_t, size_t));
*/
int
ip_move(SCR *sp, size_t lno, size_t cno)
{
IP_PRIVATE *ipp;
IP_BUF ipb;
ipp = IPP(sp);
ipp->row = lno;
ipp->col = cno;
ipb.code = SI_MOVE;
ipb.val1 = RLNO(sp, lno);
ipb.val2 = RCNO(sp, cno);
return (vi_send(ipp->o_fd, "12", &ipb));
}
/*
* PUBLIC: void ip_msg __P((SCR *, mtype_t, char *, size_t));
*/
void
ip_msg(SCR *sp, mtype_t mtype, char *line, size_t len)
{
IP_PRIVATE *ipp = IPP(sp);
if (F_ISSET(ipp, IP_ON_ALTERNATE))
vs_msg(sp, mtype, line, len);
else {
write(ipp->t_fd, line, len);
F_CLR(sp, SC_EX_WAIT_NO);
}
}
/*
* ip_refresh --
* Refresh the screen.
*
* PUBLIC: int ip_refresh __P((SCR *, int));
*/
int
ip_refresh(SCR *sp, int repaint)
{
IP_BUF ipb;
IP_PRIVATE *ipp;
db_recno_t total;
ipp = IPP(sp);
/*
* If the scroll bar information has changed since we last sent
* it, resend it. Currently, we send three values:
*
* top The line number of the first line in the screen.
* num The number of lines visible on the screen.
* total The number of lines in the file.
*
* XXX
* This is a gross violation of layering... we're looking at data
* structures at which we have absolutely no business whatsoever
* looking...
*/
ipb.val1 = HMAP->lno;
ipb.val2 = TMAP->lno - HMAP->lno;
if (sp->ep != NULL && sp->ep->db != NULL)
(void)db_last(sp, &total);
ipb.val3 = total == 0 ? 1 : total;
if (ipb.val1 != ipp->sb_top ||
ipb.val2 != ipp->sb_num || ipb.val3 != ipp->sb_total) {
ipb.code = SI_SCROLLBAR;
(void)vi_send(ipp->o_fd, "123", &ipb);
ipp->sb_top = ipb.val1;
ipp->sb_num = ipb.val2;
ipp->sb_total = ipb.val3;
}
/* Refresh/repaint the screen. */
ipb.code = repaint ? SI_REDRAW : SI_REFRESH;
return (vi_send(ipp->o_fd, NULL, &ipb));
}
/*
* ip_rename --
* Rename the file.
*
* PUBLIC: int ip_rename __P((SCR *, char *, int));
*/
int
ip_rename(SCR *sp, char *name, int on)
{
IP_BUF ipb;
IP_PRIVATE *ipp = IPP(sp);
ipb.code = SI_RENAME;
ipb.str1 = name;
ipb.len1 = name ? strlen(name) : 0;
return (vi_send(ipp->o_fd, "a", &ipb));
}
/*
* ip_reply --
* Reply to a message.
*
* PUBLIC: int ip_reply __P((SCR *, int, char *));
*/
int
ip_reply(SCR *sp, int status, char *msg)
{
IP_BUF ipb;
IP_PRIVATE *ipp = IPP(sp);
ipb.code = SI_REPLY;
ipb.val1 = status;
ipb.str1 = msg == NULL ? "" : msg;
ipb.len1 = strlen(ipb.str1);
return (vi_send(ipp->o_fd, "1a", &ipb));
}
/*
* ip_split --
* Split a screen.
*
* PUBLIC: int ip_split __P((SCR *, SCR *));
*/
int
ip_split(SCR *origp, SCR *newp)
{
return (0);
}
/*
* ip_suspend --
* Suspend a screen.
*
* PUBLIC: int ip_suspend __P((SCR *, int *));
*/
int
ip_suspend(SCR *sp, int *allowedp)
{
*allowedp = 0;
return (0);
}
/*
* ip_usage --
* Print out the ip usage messages.
*
* PUBLIC: void ip_usage __P((void));
*/
void
ip_usage(void)
{
#define USAGE "\
usage: vi [-eFlRrSv] [-c command] [-I ifd.ofd] [-t tag] [-w size] [file ...]\n"
(void)fprintf(stderr, "%s", USAGE);
#undef USAGE
}