4.4BSD/usr/src/contrib/nvi/nvi/vi/v_text.c
/*-
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
static char sccsid[] = "@(#)v_text.c 8.1 (Berkeley) 6/9/93";
#endif /* not lint */
#include <sys/types.h>
#include <ctype.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include "vi.h"
#include "vcmd.h"
#define SET_TXT_STD(sp, f) { \
LF_INIT((f) | TXT_BEAUTIFY | TXT_CNTRLT | TXT_ESCAPE | \
TXT_MAPINPUT | TXT_RECORD | TXT_RESOLVE); \
if (O_ISSET(sp, O_AUTOINDENT)) \
LF_SET(TXT_AUTOINDENT); \
if (O_ISSET(sp, O_SHOWMATCH)) \
LF_SET(TXT_SHOWMATCH); \
}
/*
* Repeated input in the historic vi is mostly wrong and this isn't very
* backward compatible. For example, if the user entered "3Aab\ncd" in
* the historic vi, the "ab" was repeated 3 times, and the "\ncd" was then
* appended to the result.
*/
/*
* v_iA -- [count]A
* Append text to the end of the line.
*/
int
v_iA(sp, ep, vp, fm, tm, rp)
SCR *sp;
EXF *ep;
VICMDARG *vp;
MARK *fm, *tm, *rp;
{
recno_t lno;
u_long cnt;
size_t len;
u_int flags;
char *p;
SET_TXT_STD(sp, TXT_APPENDEOL);
if (F_ISSET(vp, VC_ISDOT))
LF_SET(TXT_REPLAY);
lno = fm->lno;
for (cnt = F_ISSET(vp, VC_C1SET) ? vp->count : 1; cnt--;) {
/* Move the cursor to the end of the line + 1. */
if ((p = file_gline(sp, ep, lno, &len)) == NULL) {
if (file_lline(sp, ep, &lno))
return (1);
if (lno != 0) {
GETLINE_ERR(sp, lno);
return (1);
}
lno = 1;
len = 0;
} else
sp->cno = len;
if (v_ntext(sp, ep,
&sp->txthdr, NULL, p, len, rp, 0, OOBLNO, flags))
return (1);
SET_TXT_STD(sp, TXT_APPENDEOL | TXT_REPLAY);
sp->lno = lno = rp->lno;
sp->cno = rp->cno;
}
return (0);
}
/*
* v_ia -- [count]a
* Append text to the cursor position.
*/
int
v_ia(sp, ep, vp, fm, tm, rp)
SCR *sp;
EXF *ep;
VICMDARG *vp;
MARK *fm, *tm, *rp;
{
recno_t lno;
u_long cnt;
u_int flags;
size_t len;
char *p;
SET_TXT_STD(sp, 0);
if (F_ISSET(vp, VC_ISDOT))
LF_SET(TXT_REPLAY);
lno = fm->lno;
for (cnt = F_ISSET(vp, VC_C1SET) ? vp->count : 1; cnt--;) {
/*
* Move the cursor one column to the right and
* repaint the screen.
*/
if ((p = file_gline(sp, ep, lno, &len)) == NULL) {
if (file_lline(sp, ep, &lno))
return (1);
if (lno != 0) {
GETLINE_ERR(sp, lno);
return (1);
}
lno = 1;
len = 0;
LF_SET(TXT_APPENDEOL);
} else if (len) {
if (len == sp->cno + 1) {
LF_SET(TXT_APPENDEOL);
sp->cno = len;
} else
++sp->cno;
} else
LF_SET(TXT_APPENDEOL);
if (v_ntext(sp, ep,
&sp->txthdr, NULL, p, len, rp, 0, OOBLNO, flags))
return (1);
SET_TXT_STD(sp, TXT_REPLAY);
sp->lno = lno = rp->lno;
sp->cno = rp->cno;
}
return (0);
}
/*
* v_iI -- [count]I
* Insert text at the first non-blank character in the line.
*/
int
v_iI(sp, ep, vp, fm, tm, rp)
SCR *sp;
EXF *ep;
VICMDARG *vp;
MARK *fm, *tm, *rp;
{
recno_t lno;
u_long cnt;
size_t len, wlen;
u_int flags;
char *p, *t;
SET_TXT_STD(sp, 0);
if (F_ISSET(vp, VC_ISDOT))
LF_SET(TXT_REPLAY);
lno = fm->lno;
for (cnt = F_ISSET(vp, VC_C1SET) ? vp->count : 1; cnt--;) {
/*
* Move the cursor to the start of the line and repaint
* the screen.
*/
if ((p = file_gline(sp, ep, lno, &len)) == NULL) {
if (file_lline(sp, ep, &lno))
return (1);
if (lno != 0) {
GETLINE_ERR(sp, lno);
return (1);
}
lno = 1;
len = 0;
} else {
for (t = p, wlen = len; wlen-- && isspace(*t); ++t);
sp->cno = t - p;
}
if (len == 0)
LF_SET(TXT_APPENDEOL);
if (v_ntext(sp, ep,
&sp->txthdr, NULL, p, len, rp, 0, OOBLNO, flags))
return (1);
SET_TXT_STD(sp, TXT_REPLAY);
sp->lno = lno = rp->lno;
sp->cno = rp->cno;
}
return (0);
}
/*
* v_ii -- [count]i
* Insert text at the cursor position.
*/
int
v_ii(sp, ep, vp, fm, tm, rp)
SCR *sp;
EXF *ep;
VICMDARG *vp;
MARK *fm, *tm, *rp;
{
recno_t lno;
u_long cnt;
size_t len;
u_int flags;
char *p;
SET_TXT_STD(sp, 0);
if (F_ISSET(vp, VC_ISDOT))
LF_SET(TXT_REPLAY);
lno = fm->lno;
for (cnt = F_ISSET(vp, VC_C1SET) ? vp->count : 1; cnt--;) {
if ((p = file_gline(sp, ep, lno, &len)) == NULL) {
if (file_lline(sp, ep, &lno))
return (1);
if (lno != 0) {
GETLINE_ERR(sp, fm->lno);
return (1);
}
len = 0;
lno = 1;
}
if (len == 0)
LF_SET(TXT_APPENDEOL);
else if (LF_ISSET(TXT_REPLAY) && len == sp->cno + 1) {
LF_SET(TXT_APPENDEOL);
sp->cno = len;
}
if (v_ntext(sp, ep,
&sp->txthdr, NULL, p, len, rp, 0, OOBLNO, flags))
return (1);
SET_TXT_STD(sp, TXT_REPLAY);
sp->lno = lno = rp->lno;
/* On replay, advance the insert by one (make it an append). */
sp->cno = rp->cno + 1;
}
return (0);
}
/*
* v_iO -- [count]O
* Insert text above this line.
*/
int
v_iO(sp, ep, vp, fm, tm, rp)
SCR *sp;
EXF *ep;
VICMDARG *vp;
MARK *fm, *tm, *rp;
{
recno_t ai_line, lno;
size_t len;
u_long cnt;
u_int flags;
char *p;
SET_TXT_STD(sp, TXT_APPENDEOL);
if (F_ISSET(vp, VC_ISDOT))
LF_SET(TXT_REPLAY);
for (cnt = F_ISSET(vp, VC_C1SET) ? vp->count : 1; cnt--;) {
if (fm->lno == 1) {
if (file_lline(sp, ep, &lno))
return (1);
if (lno != 0)
goto insert;
p = NULL;
len = 0;
ai_line = OOBLNO;
} else {
insert: p = "";
len = 0;
if (file_iline(sp, ep, sp->lno, p, len))
return (1);
if ((p = file_gline(sp, ep, sp->lno, &len)) == NULL) {
GETLINE_ERR(sp, sp->lno);
return (1);
}
sp->cno = 0;
ai_line = sp->lno + 1;
}
if (v_ntext(sp, ep,
&sp->txthdr, NULL, p, len, rp, 0, ai_line, flags))
return (1);
SET_TXT_STD(sp, TXT_APPENDEOL | TXT_REPLAY);
sp->lno = lno = rp->lno;
sp->cno = rp->cno;
}
return (0);
}
/*
* v_io -- [count]o
* Insert text after this line.
*/
int
v_io(sp, ep, vp, fm, tm, rp)
SCR *sp;
EXF *ep;
VICMDARG *vp;
MARK *fm, *tm, *rp;
{
recno_t ai_line, lno;
size_t len;
u_long cnt;
u_int flags;
char *p;
SET_TXT_STD(sp, TXT_APPENDEOL);
if (F_ISSET(vp, VC_ISDOT))
LF_SET(TXT_REPLAY);
for (cnt = F_ISSET(vp, VC_C1SET) ? vp->count : 1; cnt--;) {
if (sp->lno == 1) {
if (file_lline(sp, ep, &lno))
return (1);
if (lno != 0)
goto insert;
p = NULL;
len = 0;
ai_line = OOBLNO;
} else {
insert: p = "";
len = 0;
if (file_aline(sp, ep, 1, sp->lno, p, len))
return (1);
if ((p = file_gline(sp, ep, ++sp->lno, &len)) == NULL) {
GETLINE_ERR(sp, sp->lno);
return (1);
}
sp->cno = 0;
ai_line = sp->lno - 1;
}
if (v_ntext(sp, ep,
&sp->txthdr, NULL, p, len, rp, 0, ai_line, flags))
return (1);
SET_TXT_STD(sp, TXT_APPENDEOL | TXT_REPLAY);
sp->lno = lno = rp->lno;
sp->cno = rp->cno;
}
return (0);
}
/*
* v_Change -- [buffer][count]C
* Change line command.
*/
int
v_Change(sp, ep, vp, fm, tm, rp)
SCR *sp;
EXF *ep;
VICMDARG *vp;
MARK *fm, *tm, *rp;
{
recno_t lno;
size_t len;
u_int flags;
char *p;
SET_TXT_STD(sp, 0);
if (F_ISSET(vp, VC_ISDOT))
LF_SET(TXT_REPLAY);
/*
* There are two cases -- if a count is supplied, we do a line
* mode change where we delete the lines and then insert text
* into a new line. Otherwise, we replace the current line.
*/
tm->lno = fm->lno + (F_ISSET(vp, VC_C1SET) ? vp->count - 1 : 0);
if (fm->lno != tm->lno) {
/* Make sure that the to line is real. */
if (file_gline(sp, ep, tm->lno, NULL) == NULL) {
GETLINE_ERR(sp, tm->lno);
return (1);
}
/* Cut the line. */
if (cut(sp, ep, VICB(vp), fm, tm, 1))
return (1);
/* Insert a line while we still can... */
if (file_iline(sp, ep, fm->lno, "", 0))
return (1);
++fm->lno;
++tm->lno;
if (delete(sp, ep, fm, tm, 1))
return (1);
if ((p = file_gline(sp, ep, --fm->lno, &len)) == NULL) {
GETLINE_ERR(sp, fm->lno);
return (1);
}
sp->lno = fm->lno;
sp->cno = 0;
tm = NULL;
} else {
/* The line may be empty, but that's okay. */
if ((p = file_gline(sp, ep, fm->lno, &len)) == NULL) {
if (file_lline(sp, ep, &lno))
return (1);
if (lno != 0) {
GETLINE_ERR(sp, tm->lno);
return (1);
}
LF_SET(TXT_APPENDEOL);
len = 0;
} else {
if (cut(sp, ep, VICB(vp), fm, tm, 1))
return (1);
tm->cno = len;
LF_SET(TXT_EMARK | TXT_OVERWRITE);
}
}
return (v_ntext(sp, ep,
&sp->txthdr, tm, p, len, rp, 0, OOBLNO, flags));
}
/*
* v_change -- [buffer][count]c[count]motion
* Change command.
*/
int
v_change(sp, ep, vp, fm, tm, rp)
SCR *sp;
EXF *ep;
VICMDARG *vp;
MARK *fm, *tm, *rp;
{
recno_t lno;
size_t len;
u_int flags;
int lmode;
char *p;
SET_TXT_STD(sp, 0);
if (F_ISSET(vp, VC_ISDOT))
LF_SET(TXT_REPLAY);
/*
* Move the cursor to the start of the change. Note, the cc command
* in line mode changes from the first *non-blank* character of the
* line, not the first character. And, to make it just a bit more
* exciting, the initial space is handled as auto-indent characters.
*/
if (lmode = F_ISSET(vp, VC_LMODE)) {
if (nonblank(sp, ep, fm->lno, &fm->cno))
return (1);
LF_SET(TXT_AICHARS);
}
sp->lno = fm->lno;
sp->cno = fm->cno;
if (fm->lno == tm->lno)
if ((p = file_gline(sp, ep, fm->lno, &len)) == NULL ||
len == 0) {
if (p == NULL) {
if (file_lline(sp, ep, &lno))
return (1);
if (lno != 0) {
GETLINE_ERR(sp, fm->lno);
return (1);
}
}
LF_SET(TXT_APPENDEOL);
len = 0;
} else {
if (cut(sp, ep, VICB(vp), fm, tm, lmode))
return (1);
LF_SET(TXT_EMARK | TXT_OVERWRITE);
}
else {
if (cut(sp, ep, VICB(vp), fm, tm, lmode))
return (1);
if (delete(sp, ep, fm, tm, lmode))
return (1);
if (lmode && file_iline(sp, ep, fm->lno, "", 0))
return (1);
if ((p = file_gline(sp, ep, fm->lno, &len)) == NULL) {
if (file_lline(sp, ep, &lno))
return (1);
if (lno != 0) {
GETLINE_ERR(sp, fm->lno);
return (1);
}
len = 0;
}
if (len == 0)
LF_SET(TXT_APPENDEOL);
tm = NULL;
}
return (v_ntext(sp, ep,
&sp->txthdr, tm, p, len, rp, 0, OOBLNO, flags));
}
/*
* v_Replace -- [count]R
* Overwrite multiple characters.
*/
int
v_Replace(sp, ep, vp, fm, tm, rp)
SCR *sp;
EXF *ep;
VICMDARG *vp;
MARK *fm, *tm, *rp;
{
recno_t lno;
u_long cnt;
size_t len;
u_int flags;
char *p;
SET_TXT_STD(sp, 0);
if (F_ISSET(vp, VC_ISDOT))
LF_SET(TXT_REPLAY);
*rp = *fm;
cnt = F_ISSET(vp, VC_C1SET) ? vp->count : 1;
if ((p = file_gline(sp, ep, rp->lno, &len)) == NULL) {
if (file_lline(sp, ep, &lno))
return (1);
if (lno != 0) {
GETLINE_ERR(sp, rp->lno);
return (1);
}
LF_SET(TXT_APPENDEOL);
len = 0;
} else
LF_SET(TXT_OVERWRITE | TXT_REPLACE);
tm->lno = rp->lno;
tm->cno = len ? len : 0;
if (v_ntext(sp, ep, &sp->txthdr, tm, p, len, rp, 0, OOBLNO, flags))
return (1);
/*
* Special case. The historic vi handled [count]R badly, in that R
* would replace some number of characters, and then the count would
* append count-1 copies of the replacing chars to the replaced space.
* This seems wrong, so this version counts R commands. There is some
* trickiness in moving back to where the user stopped replacing after
* each R command. Basically, if the user ended with a newline, we
* want to use rp->cno (which will be 0). Otherwise, use the column
* after the returned cursor, unless it would be past the end of the
* line, in which case we append to the line.
*/
while (--cnt) {
if ((p = file_gline(sp, ep, rp->lno, &len)) == NULL)
GETLINE_ERR(sp, rp->lno);
SET_TXT_STD(sp, TXT_REPLAY);
sp->lno = rp->lno;
if (len == 0 || rp->cno == len - 1) {
sp->cno = len;
LF_SET(TXT_APPENDEOL);
} else {
sp->cno = rp->cno;
if (rp->cno != 0)
++sp->cno;
LF_SET(TXT_OVERWRITE | TXT_REPLACE);
}
if (v_ntext(sp, ep,
&sp->txthdr, tm, p, len, rp, 0, OOBLNO, flags))
return (1);
}
return (0);
}
/*
* v_subst -- [buffer][count]s
* Substitute characters.
*/
int
v_subst(sp, ep, vp, fm, tm, rp)
SCR *sp;
EXF *ep;
VICMDARG *vp;
MARK *fm, *tm, *rp;
{
recno_t lno;
size_t len;
u_int flags;
char *p;
SET_TXT_STD(sp, 0);
if (F_ISSET(vp, VC_ISDOT))
LF_SET(TXT_REPLAY);
if ((p = file_gline(sp, ep, fm->lno, &len)) == NULL) {
if (file_lline(sp, ep, &lno))
return (1);
if (lno != 0) {
GETLINE_ERR(sp, fm->lno);
return (1);
}
len = 0;
LF_SET(TXT_APPENDEOL);
} else
LF_SET(TXT_EMARK | TXT_OVERWRITE);
tm->lno = fm->lno;
tm->cno = fm->cno + (F_ISSET(vp, VC_C1SET) ? vp->count : 1);
if (tm->cno > len)
tm->cno = len;
if (p != NULL && cut(sp, ep, VICB(vp), fm, tm, 0))
return (1);
return (v_ntext(sp, ep,
&sp->txthdr, tm, p, len, rp, 0, OOBLNO, flags));
}