3e1db26a5a
Removing elvis, importing nvi, ctags, updating libedit. Change-Id: I881eb04d2dc64cf112facd992de1114e1a59107f
355 lines
8.9 KiB
C
355 lines
8.9 KiB
C
/* $NetBSD: cut.c,v 1.9 2012/01/27 16:41:22 christos Exp $ */
|
|
|
|
/*-
|
|
* 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[] = "Id: cut.c,v 10.18 2001/06/25 15:19:09 skimo Exp (Berkeley) Date: 2001/06/25 15:19:09";
|
|
#endif /* not lint */
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/queue.h>
|
|
|
|
#include <bitstring.h>
|
|
#include <ctype.h>
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <limits.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#include "common.h"
|
|
|
|
static void cb_rotate __P((SCR *));
|
|
|
|
/*
|
|
* cut --
|
|
* Put a range of lines/columns into a TEXT buffer.
|
|
*
|
|
* There are two buffer areas, both found in the global structure. The first
|
|
* is the linked list of all the buffers the user has named, the second is the
|
|
* unnamed buffer storage. There is a pointer, too, which is the current
|
|
* default buffer, i.e. it may point to the unnamed buffer or a named buffer
|
|
* depending on into what buffer the last text was cut. Logically, in both
|
|
* delete and yank operations, if the user names a buffer, the text is cut
|
|
* into it. If it's a delete of information on more than a single line, the
|
|
* contents of the numbered buffers are rotated up one, the contents of the
|
|
* buffer named '9' are discarded, and the text is cut into the buffer named
|
|
* '1'. The text is always cut into the unnamed buffer.
|
|
*
|
|
* In all cases, upper-case buffer names are the same as lower-case names,
|
|
* with the exception that they cause the buffer to be appended to instead
|
|
* of replaced. Note, however, that if text is appended to a buffer, the
|
|
* default buffer only contains the appended text, not the entire contents
|
|
* of the buffer.
|
|
*
|
|
* !!!
|
|
* The contents of the default buffer would disappear after most operations
|
|
* in historic vi. It's unclear that this is useful, so we don't bother.
|
|
*
|
|
* When users explicitly cut text into the numeric buffers, historic vi became
|
|
* genuinely strange. I've never been able to figure out what was supposed to
|
|
* happen. It behaved differently if you deleted text than if you yanked text,
|
|
* and, in the latter case, the text was appended to the buffer instead of
|
|
* replacing the contents. Hopefully it's not worth getting right, and here
|
|
* we just treat the numeric buffers like any other named buffer.
|
|
*
|
|
* PUBLIC: int cut __P((SCR *, ARG_CHAR_T *, MARK *, MARK *, int));
|
|
*/
|
|
int
|
|
cut(SCR *sp, ARG_CHAR_T *namep, MARK *fm, MARK *tm, int flags)
|
|
{
|
|
CB *cbp;
|
|
ARG_CHAR_T name = '\0';
|
|
db_recno_t lno;
|
|
int append, copy_one, copy_def;
|
|
|
|
/*
|
|
* If the user specified a buffer, put it there. (This may require
|
|
* a copy into the numeric buffers. We do the copy so that we don't
|
|
* have to reference count and so we don't have to deal with things
|
|
* like appends to buffers that are used multiple times.)
|
|
*
|
|
* Otherwise, if it's supposed to be put in a numeric buffer (usually
|
|
* a delete) put it there. The rules for putting things in numeric
|
|
* buffers were historically a little strange. There were three cases.
|
|
*
|
|
* 1: Some motions are always line mode motions, which means
|
|
* that the cut always goes into the numeric buffers.
|
|
* 2: Some motions aren't line mode motions, e.g. d10w, but
|
|
* can cross line boundaries. For these commands, if the
|
|
* cut crosses a line boundary, it goes into the numeric
|
|
* buffers. This includes most of the commands.
|
|
* 3: Some motions aren't line mode motions, e.g. d`<char>,
|
|
* but always go into the numeric buffers, regardless. This
|
|
* was the commands: % ` / ? ( ) N n { } -- and nvi adds ^A.
|
|
*
|
|
* Otherwise, put it in the unnamed buffer.
|
|
*/
|
|
append = copy_one = copy_def = 0;
|
|
if (namep != NULL) {
|
|
name = *namep;
|
|
if (LF_ISSET(CUT_NUMREQ) || (LF_ISSET(CUT_NUMOPT) &&
|
|
(LF_ISSET(CUT_LINEMODE) || fm->lno != tm->lno))) {
|
|
copy_one = 1;
|
|
cb_rotate(sp);
|
|
}
|
|
if ((append = ISUPPER(name)) == 1) {
|
|
if (!copy_one)
|
|
copy_def = 1;
|
|
name = TOLOWER(name);
|
|
}
|
|
namecb: CBNAME(sp, cbp, name);
|
|
} else if (LF_ISSET(CUT_NUMREQ) || (LF_ISSET(CUT_NUMOPT) &&
|
|
(LF_ISSET(CUT_LINEMODE) || fm->lno != tm->lno))) {
|
|
name = '1';
|
|
cb_rotate(sp);
|
|
goto namecb;
|
|
} else
|
|
cbp = &sp->wp->dcb_store;
|
|
|
|
copyloop:
|
|
/*
|
|
* If this is a new buffer, create it and add it into the list.
|
|
* Otherwise, if it's not an append, free its current contents.
|
|
*/
|
|
if (cbp == NULL) {
|
|
CALLOC_RET(sp, cbp, CB *, 1, sizeof(CB));
|
|
cbp->name = name;
|
|
CIRCLEQ_INIT(&cbp->textq);
|
|
LIST_INSERT_HEAD(&sp->wp->cutq, cbp, q);
|
|
} else if (!append) {
|
|
text_lfree(&cbp->textq);
|
|
cbp->len = 0;
|
|
cbp->flags = 0;
|
|
}
|
|
|
|
|
|
/* In line mode, it's pretty easy, just cut the lines. */
|
|
if (LF_ISSET(CUT_LINEMODE)) {
|
|
cbp->flags |= CB_LMODE;
|
|
for (lno = fm->lno; lno <= tm->lno; ++lno)
|
|
if (cut_line(sp, lno, 0, ENTIRE_LINE, cbp))
|
|
goto cut_line_err;
|
|
} else {
|
|
/*
|
|
* Get the first line. A length of ENTIRE_LINE causes cut_line
|
|
* to cut from the MARK to the end of the line.
|
|
*/
|
|
if (cut_line(sp, fm->lno, fm->cno, fm->lno != tm->lno ?
|
|
ENTIRE_LINE : (tm->cno - fm->cno) + 1, cbp))
|
|
goto cut_line_err;
|
|
|
|
/* Get the intermediate lines. */
|
|
for (lno = fm->lno; ++lno < tm->lno;)
|
|
if (cut_line(sp, lno, 0, ENTIRE_LINE, cbp))
|
|
goto cut_line_err;
|
|
|
|
/* Get the last line. */
|
|
if (tm->lno != fm->lno &&
|
|
cut_line(sp, lno, 0, tm->cno + 1, cbp))
|
|
goto cut_line_err;
|
|
}
|
|
|
|
append = 0; /* Only append to the named buffer. */
|
|
sp->wp->dcbp = cbp; /* Repoint the default buffer on each pass. */
|
|
|
|
if (copy_one) { /* Copy into numeric buffer 1. */
|
|
name = '1';
|
|
CBNAME(sp, cbp, name);
|
|
copy_one = 0;
|
|
goto copyloop;
|
|
}
|
|
if (copy_def) { /* Copy into the default buffer. */
|
|
cbp = &sp->wp->dcb_store;
|
|
copy_def = 0;
|
|
goto copyloop;
|
|
}
|
|
return (0);
|
|
|
|
cut_line_err:
|
|
text_lfree(&cbp->textq);
|
|
cbp->len = 0;
|
|
cbp->flags = 0;
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* cb_rotate --
|
|
* Rotate the numbered buffers up one.
|
|
*/
|
|
static void
|
|
cb_rotate(SCR *sp)
|
|
{
|
|
CB *cbp, *del_cbp;
|
|
|
|
del_cbp = NULL;
|
|
for (cbp = sp->wp->cutq.lh_first; cbp != NULL; cbp = cbp->q.le_next)
|
|
switch(cbp->name) {
|
|
case '1':
|
|
cbp->name = '2';
|
|
break;
|
|
case '2':
|
|
cbp->name = '3';
|
|
break;
|
|
case '3':
|
|
cbp->name = '4';
|
|
break;
|
|
case '4':
|
|
cbp->name = '5';
|
|
break;
|
|
case '5':
|
|
cbp->name = '6';
|
|
break;
|
|
case '6':
|
|
cbp->name = '7';
|
|
break;
|
|
case '7':
|
|
cbp->name = '8';
|
|
break;
|
|
case '8':
|
|
cbp->name = '9';
|
|
break;
|
|
case '9':
|
|
del_cbp = cbp;
|
|
break;
|
|
}
|
|
if (del_cbp != NULL) {
|
|
LIST_REMOVE(del_cbp, q);
|
|
text_lfree(&del_cbp->textq);
|
|
free(del_cbp);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* cut_line --
|
|
* Cut a portion of a single line.
|
|
*
|
|
* PUBLIC: int cut_line __P((SCR *, db_recno_t, size_t, size_t, CB *));
|
|
*/
|
|
int
|
|
cut_line(SCR *sp, db_recno_t lno, size_t fcno, size_t clen, CB *cbp)
|
|
{
|
|
TEXT *tp;
|
|
size_t len;
|
|
CHAR_T *p;
|
|
|
|
/* Get the line. */
|
|
if (db_get(sp, lno, DBG_FATAL, &p, &len))
|
|
return (1);
|
|
|
|
/* Create a TEXT structure that can hold the entire line. */
|
|
if ((tp = text_init(sp, NULL, 0, len)) == NULL)
|
|
return (1);
|
|
|
|
/*
|
|
* If the line isn't empty and it's not the entire line,
|
|
* copy the portion we want, and reset the TEXT length.
|
|
*/
|
|
if (len != 0) {
|
|
if (clen == ENTIRE_LINE)
|
|
clen = len - fcno;
|
|
MEMCPYW(tp->lb, p + fcno, clen);
|
|
tp->len = clen;
|
|
}
|
|
|
|
/* Append to the end of the cut buffer. */
|
|
CIRCLEQ_INSERT_TAIL(&cbp->textq, tp, q);
|
|
cbp->len += tp->len;
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* cut_close --
|
|
* Discard all cut buffers.
|
|
*
|
|
* PUBLIC: void cut_close __P((WIN *));
|
|
*/
|
|
void
|
|
cut_close(WIN *wp)
|
|
{
|
|
CB *cbp;
|
|
|
|
/* Free cut buffer list. */
|
|
while ((cbp = wp->cutq.lh_first) != NULL) {
|
|
if (cbp->textq.cqh_first != (void *)&cbp->textq)
|
|
text_lfree(&cbp->textq);
|
|
LIST_REMOVE(cbp, q);
|
|
free(cbp);
|
|
}
|
|
|
|
/* Free default cut storage. */
|
|
cbp = &wp->dcb_store;
|
|
if (cbp->textq.cqh_first != (void *)&cbp->textq)
|
|
text_lfree(&cbp->textq);
|
|
}
|
|
|
|
/*
|
|
* text_init --
|
|
* Allocate a new TEXT structure.
|
|
*
|
|
* PUBLIC: TEXT *text_init __P((SCR *, const CHAR_T *, size_t, size_t));
|
|
*/
|
|
TEXT *
|
|
text_init(SCR *sp, const CHAR_T *p, size_t len, size_t total_len)
|
|
{
|
|
TEXT *tp;
|
|
|
|
CALLOC(sp, tp, TEXT *, 1, sizeof(TEXT));
|
|
if (tp == NULL)
|
|
return (NULL);
|
|
/* ANSI C doesn't define a call to malloc(3) for 0 bytes. */
|
|
if ((tp->lb_len = total_len * sizeof(CHAR_T)) != 0) {
|
|
MALLOC(sp, tp->lb, CHAR_T *, tp->lb_len * sizeof(CHAR_T));
|
|
if (tp->lb == NULL) {
|
|
free(tp);
|
|
return (NULL);
|
|
}
|
|
if (p != NULL && len != 0)
|
|
MEMCPYW(tp->lb, p, len);
|
|
}
|
|
tp->len = len;
|
|
return (tp);
|
|
}
|
|
|
|
/*
|
|
* text_lfree --
|
|
* Free a chain of text structures.
|
|
*
|
|
* PUBLIC: void text_lfree __P((TEXTH *));
|
|
*/
|
|
void
|
|
text_lfree(TEXTH *headp)
|
|
{
|
|
TEXT *tp;
|
|
|
|
while ((tp = headp->cqh_first) != (void *)headp) {
|
|
CIRCLEQ_REMOVE(headp, tp, q);
|
|
text_free(tp);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* text_free --
|
|
* Free a text structure.
|
|
*
|
|
* PUBLIC: void text_free __P((TEXT *));
|
|
*/
|
|
void
|
|
text_free(TEXT *tp)
|
|
{
|
|
if (tp->lb != NULL)
|
|
free(tp->lb);
|
|
free(tp);
|
|
}
|