59cc89c2c2
files, curses, db, regex etc that we already have). The other glue will follow shortly. Obtained from: Keith Bostic <bostic@bostic.com>
294 lines
6.4 KiB
C
294 lines
6.4 KiB
C
/*-
|
|
* Copyright (c) 1992, 1993, 1994
|
|
* The Regents of the University of California. All rights reserved.
|
|
* Copyright (c) 1992, 1993, 1994, 1995, 1996
|
|
* Keith Bostic. All rights reserved.
|
|
*
|
|
* See the LICENSE file for redistribution information.
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#ifndef lint
|
|
static const char sccsid[] = "@(#)v_left.c 10.7 (Berkeley) 3/6/96";
|
|
#endif /* not lint */
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/queue.h>
|
|
#include <sys/time.h>
|
|
|
|
#include <bitstring.h>
|
|
#include <limits.h>
|
|
#include <stdio.h>
|
|
|
|
#include "../common/common.h"
|
|
#include "vi.h"
|
|
|
|
/*
|
|
* v_left -- [count]^H, [count]h
|
|
* Move left by columns.
|
|
*
|
|
* PUBLIC: int v_left __P((SCR *, VICMD *));
|
|
*/
|
|
int
|
|
v_left(sp, vp)
|
|
SCR *sp;
|
|
VICMD *vp;
|
|
{
|
|
recno_t cnt;
|
|
|
|
/*
|
|
* !!!
|
|
* The ^H and h commands always failed in the first column.
|
|
*/
|
|
if (vp->m_start.cno == 0) {
|
|
v_sol(sp);
|
|
return (1);
|
|
}
|
|
|
|
/* Find the end of the range. */
|
|
cnt = F_ISSET(vp, VC_C1SET) ? vp->count : 1;
|
|
if (vp->m_start.cno > cnt)
|
|
vp->m_stop.cno = vp->m_start.cno - cnt;
|
|
else
|
|
vp->m_stop.cno = 0;
|
|
|
|
/*
|
|
* All commands move to the end of the range. Motion commands
|
|
* adjust the starting point to the character before the current
|
|
* one.
|
|
*/
|
|
if (ISMOTION(vp))
|
|
--vp->m_start.cno;
|
|
vp->m_final = vp->m_stop;
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* v_cfirst -- [count]_
|
|
* Move to the first non-blank character in a line.
|
|
*
|
|
* PUBLIC: int v_cfirst __P((SCR *, VICMD *));
|
|
*/
|
|
int
|
|
v_cfirst(sp, vp)
|
|
SCR *sp;
|
|
VICMD *vp;
|
|
{
|
|
recno_t cnt, lno;
|
|
|
|
/*
|
|
* !!!
|
|
* If the _ is a motion component, it makes the command a line motion
|
|
* e.g. "d_" deletes the line. It also means that the cursor doesn't
|
|
* move.
|
|
*
|
|
* The _ command never failed in the first column.
|
|
*/
|
|
if (ISMOTION(vp))
|
|
F_SET(vp, VM_LMODE);
|
|
/*
|
|
* !!!
|
|
* Historically a specified count makes _ move down count - 1
|
|
* rows, so, "3_" is the same as "2j_".
|
|
*/
|
|
cnt = F_ISSET(vp, VC_C1SET) ? vp->count : 1;
|
|
if (cnt != 1) {
|
|
--vp->count;
|
|
return (v_down(sp, vp));
|
|
}
|
|
|
|
/*
|
|
* Move to the first non-blank.
|
|
*
|
|
* Can't just use RCM_SET_FNB, in case _ is used as the motion
|
|
* component of another command.
|
|
*/
|
|
vp->m_stop.cno = 0;
|
|
if (nonblank(sp, vp->m_stop.lno, &vp->m_stop.cno))
|
|
return (1);
|
|
|
|
/*
|
|
* !!!
|
|
* The _ command has to fail if the file is empty and we're doing
|
|
* a delete. If deleting line 1, and 0 is the first nonblank,
|
|
* make the check.
|
|
*/
|
|
if (vp->m_stop.lno == 1 &&
|
|
vp->m_stop.cno == 0 && ISCMD(vp->rkp, 'd')) {
|
|
if (db_last(sp, &lno))
|
|
return (1);
|
|
if (lno == 0) {
|
|
v_sol(sp);
|
|
return (1);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Delete and non-motion commands move to the end of the range,
|
|
* yank stays at the start. Ignore others.
|
|
*/
|
|
vp->m_final =
|
|
ISMOTION(vp) && ISCMD(vp->rkp, 'y') ? vp->m_start : vp->m_stop;
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* v_first -- ^
|
|
* Move to the first non-blank character in this line.
|
|
*
|
|
* PUBLIC: int v_first __P((SCR *, VICMD *));
|
|
*/
|
|
int
|
|
v_first(sp, vp)
|
|
SCR *sp;
|
|
VICMD *vp;
|
|
{
|
|
/*
|
|
* !!!
|
|
* Yielding to none in our quest for compatibility with every
|
|
* historical blemish of vi, no matter how strange it might be,
|
|
* we permit the user to enter a count and then ignore it.
|
|
*/
|
|
|
|
/*
|
|
* Move to the first non-blank.
|
|
*
|
|
* Can't just use RCM_SET_FNB, in case ^ is used as the motion
|
|
* component of another command.
|
|
*/
|
|
vp->m_stop.cno = 0;
|
|
if (nonblank(sp, vp->m_stop.lno, &vp->m_stop.cno))
|
|
return (1);
|
|
|
|
/*
|
|
* !!!
|
|
* The ^ command succeeded if used as a command when the cursor was
|
|
* on the first non-blank in the line, but failed if used as a motion
|
|
* component in the same situation.
|
|
*/
|
|
if (ISMOTION(vp) && vp->m_start.cno == vp->m_stop.cno) {
|
|
v_sol(sp);
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* If moving right, non-motion commands move to the end of the range.
|
|
* Delete and yank stay at the start. Motion commands adjust the
|
|
* ending point to the character before the current ending charcter.
|
|
*
|
|
* If moving left, all commands move to the end of the range. Motion
|
|
* commands adjust the starting point to the character before the
|
|
* current starting character.
|
|
*/
|
|
if (vp->m_start.cno < vp->m_stop.cno)
|
|
if (ISMOTION(vp)) {
|
|
--vp->m_stop.cno;
|
|
vp->m_final = vp->m_start;
|
|
} else
|
|
vp->m_final = vp->m_stop;
|
|
else {
|
|
if (ISMOTION(vp))
|
|
--vp->m_start.cno;
|
|
vp->m_final = vp->m_stop;
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* v_ncol -- [count]|
|
|
* Move to column count or the first column on this line. If the
|
|
* requested column is past EOL, move to EOL. The nasty part is
|
|
* that we have to know character column widths to make this work.
|
|
*
|
|
* PUBLIC: int v_ncol __P((SCR *, VICMD *));
|
|
*/
|
|
int
|
|
v_ncol(sp, vp)
|
|
SCR *sp;
|
|
VICMD *vp;
|
|
{
|
|
if (F_ISSET(vp, VC_C1SET) && vp->count > 1) {
|
|
--vp->count;
|
|
vp->m_stop.cno =
|
|
vs_colpos(sp, vp->m_start.lno, (size_t)vp->count);
|
|
/*
|
|
* !!!
|
|
* The | command succeeded if used as a command and the cursor
|
|
* didn't move, but failed if used as a motion component in the
|
|
* same situation.
|
|
*/
|
|
if (ISMOTION(vp) && vp->m_stop.cno == vp->m_start.cno) {
|
|
v_nomove(sp);
|
|
return (1);
|
|
}
|
|
} else {
|
|
/*
|
|
* !!!
|
|
* The | command succeeded if used as a command in column 0
|
|
* without a count, but failed if used as a motion component
|
|
* in the same situation.
|
|
*/
|
|
if (ISMOTION(vp) && vp->m_start.cno == 0) {
|
|
v_sol(sp);
|
|
return (1);
|
|
}
|
|
vp->m_stop.cno = 0;
|
|
}
|
|
|
|
/*
|
|
* If moving right, non-motion commands move to the end of the range.
|
|
* Delete and yank stay at the start. Motion commands adjust the
|
|
* ending point to the character before the current ending charcter.
|
|
*
|
|
* If moving left, all commands move to the end of the range. Motion
|
|
* commands adjust the starting point to the character before the
|
|
* current starting character.
|
|
*/
|
|
if (vp->m_start.cno < vp->m_stop.cno)
|
|
if (ISMOTION(vp)) {
|
|
--vp->m_stop.cno;
|
|
vp->m_final = vp->m_start;
|
|
} else
|
|
vp->m_final = vp->m_stop;
|
|
else {
|
|
if (ISMOTION(vp))
|
|
--vp->m_start.cno;
|
|
vp->m_final = vp->m_stop;
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* v_zero -- 0
|
|
* Move to the first column on this line.
|
|
*
|
|
* PUBLIC: int v_zero __P((SCR *, VICMD *));
|
|
*/
|
|
int
|
|
v_zero(sp, vp)
|
|
SCR *sp;
|
|
VICMD *vp;
|
|
{
|
|
/*
|
|
* !!!
|
|
* The 0 command succeeded if used as a command in the first column
|
|
* but failed if used as a motion component in the same situation.
|
|
*/
|
|
if (ISMOTION(vp) && vp->m_start.cno == 0) {
|
|
v_sol(sp);
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* All commands move to the end of the range. Motion commands
|
|
* adjust the starting point to the character before the current
|
|
* one.
|
|
*/
|
|
vp->m_stop.cno = 0;
|
|
if (ISMOTION(vp))
|
|
--vp->m_start.cno;
|
|
vp->m_final = vp->m_stop;
|
|
return (0);
|
|
}
|