691 lines
15 KiB
C
691 lines
15 KiB
C
|
/* $NetBSD: db.c,v 1.3 2008/12/09 16:50:22 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: db.c,v 10.48 2002/06/08 19:32:52 skimo Exp (Berkeley) Date: 2002/06/08 19:32:52";
|
||
|
#endif /* not lint */
|
||
|
|
||
|
#include <sys/types.h>
|
||
|
#include <sys/queue.h>
|
||
|
#include <sys/time.h>
|
||
|
|
||
|
#include <bitstring.h>
|
||
|
#include <errno.h>
|
||
|
#include <limits.h>
|
||
|
#include <stdio.h>
|
||
|
#include <string.h>
|
||
|
#include <stdlib.h>
|
||
|
|
||
|
#include "common.h"
|
||
|
#include "../vi/vi.h"
|
||
|
|
||
|
static int append __P((SCR*, db_recno_t, const CHAR_T*, size_t, lnop_t, int));
|
||
|
|
||
|
/*
|
||
|
* db_eget --
|
||
|
* Front-end to db_get, special case handling for empty files.
|
||
|
*
|
||
|
* PUBLIC: int db_eget __P((SCR *, db_recno_t, CHAR_T **, size_t *, int *));
|
||
|
*/
|
||
|
int
|
||
|
db_eget(SCR *sp, db_recno_t lno, CHAR_T **pp, size_t *lenp, int *isemptyp)
|
||
|
|
||
|
/* Line number. */
|
||
|
/* Pointer store. */
|
||
|
/* Length store. */
|
||
|
|
||
|
{
|
||
|
db_recno_t l1;
|
||
|
|
||
|
if (isemptyp != NULL)
|
||
|
*isemptyp = 0;
|
||
|
|
||
|
/* If the line exists, simply return it. */
|
||
|
if (!db_get(sp, lno, 0, pp, lenp))
|
||
|
return (0);
|
||
|
|
||
|
/*
|
||
|
* If the user asked for line 0 or line 1, i.e. the only possible
|
||
|
* line in an empty file, find the last line of the file; db_last
|
||
|
* fails loudly.
|
||
|
*/
|
||
|
if ((lno == 0 || lno == 1) && db_last(sp, &l1))
|
||
|
return (1);
|
||
|
|
||
|
/* If the file isn't empty, fail loudly. */
|
||
|
if ((lno != 0 && lno != 1) || l1 != 0) {
|
||
|
db_err(sp, lno);
|
||
|
return (1);
|
||
|
}
|
||
|
|
||
|
if (isemptyp != NULL)
|
||
|
*isemptyp = 1;
|
||
|
|
||
|
return (1);
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* db_get --
|
||
|
* Look in the text buffers for a line, followed by the cache, followed
|
||
|
* by the database.
|
||
|
*
|
||
|
* PUBLIC: int db_get __P((SCR *, db_recno_t, u_int32_t, CHAR_T **, size_t *));
|
||
|
*/
|
||
|
int
|
||
|
db_get(SCR *sp, db_recno_t lno, u_int32_t flags, CHAR_T **pp, size_t *lenp)
|
||
|
/* Line number. */ /* Pointer store. */ /* Length store. */
|
||
|
{
|
||
|
DBT data, key;
|
||
|
EXF *ep;
|
||
|
TEXT *tp;
|
||
|
db_recno_t l1, l2;
|
||
|
const CHAR_T *wp;
|
||
|
size_t wlen;
|
||
|
size_t nlen;
|
||
|
|
||
|
/*
|
||
|
* The underlying recno stuff handles zero by returning NULL, but
|
||
|
* have to have an OOB condition for the look-aside into the input
|
||
|
* buffer anyway.
|
||
|
*/
|
||
|
if (lno == 0)
|
||
|
goto err1;
|
||
|
|
||
|
/* Check for no underlying file. */
|
||
|
if ((ep = sp->ep) == NULL) {
|
||
|
ex_emsg(sp, NULL, EXM_NOFILEYET);
|
||
|
goto err3;
|
||
|
}
|
||
|
|
||
|
if (LF_ISSET(DBG_NOCACHE))
|
||
|
goto nocache;
|
||
|
|
||
|
/*
|
||
|
* Look-aside into the TEXT buffers and see if the line we want
|
||
|
* is there.
|
||
|
*/
|
||
|
if (F_ISSET(sp, SC_TINPUT)) {
|
||
|
l1 = ((TEXT *)sp->tiq.cqh_first)->lno;
|
||
|
l2 = ((TEXT *)sp->tiq.cqh_last)->lno;
|
||
|
if (l1 <= lno && l2 >= lno) {
|
||
|
#if defined(DEBUG) && 0
|
||
|
vtrace(sp,
|
||
|
"retrieve TEXT buffer line %lu\n", (u_long)lno);
|
||
|
#endif
|
||
|
for (tp = sp->tiq.cqh_first;
|
||
|
tp->lno != lno; tp = tp->q.cqe_next);
|
||
|
if (lenp != NULL)
|
||
|
*lenp = tp->len;
|
||
|
if (pp != NULL)
|
||
|
*pp = tp->lb;
|
||
|
return (0);
|
||
|
}
|
||
|
/*
|
||
|
* Adjust the line number for the number of lines used
|
||
|
* by the text input buffers.
|
||
|
*/
|
||
|
if (lno > l2)
|
||
|
lno -= l2 - l1;
|
||
|
}
|
||
|
|
||
|
/* Look-aside into the cache, and see if the line we want is there. */
|
||
|
if (lno == sp->c_lno) {
|
||
|
#if defined(DEBUG) && 0
|
||
|
vtrace(sp, "retrieve cached line %lu\n", (u_long)lno);
|
||
|
#endif
|
||
|
if (lenp != NULL)
|
||
|
*lenp = sp->c_len;
|
||
|
if (pp != NULL)
|
||
|
*pp = sp->c_lp;
|
||
|
return (0);
|
||
|
}
|
||
|
sp->c_lno = OOBLNO;
|
||
|
|
||
|
nocache:
|
||
|
nlen = 1024;
|
||
|
retry:
|
||
|
/* data.size contains length in bytes */
|
||
|
BINC_GOTO(sp, CHAR_T, sp->c_lp, sp->c_blen, nlen);
|
||
|
|
||
|
/* Get the line from the underlying database. */
|
||
|
memset(&key, 0, sizeof(key));
|
||
|
key.data = &lno;
|
||
|
key.size = sizeof(lno);
|
||
|
memset(&data, 0, sizeof(data));
|
||
|
data.data = sp->c_lp;
|
||
|
data.ulen = sp->c_blen;
|
||
|
data.flags = DB_DBT_USERMEM;
|
||
|
switch (ep->db->get(ep->db, NULL, &key, &data, 0)) {
|
||
|
case DB_BUFFER_SMALL:
|
||
|
nlen = data.size;
|
||
|
goto retry;
|
||
|
default:
|
||
|
goto err2;
|
||
|
case DB_NOTFOUND:
|
||
|
err1: if (LF_ISSET(DBG_FATAL))
|
||
|
err2: db_err(sp, lno);
|
||
|
alloc_err:
|
||
|
err3: if (lenp != NULL)
|
||
|
*lenp = 0;
|
||
|
if (pp != NULL)
|
||
|
*pp = NULL;
|
||
|
return (1);
|
||
|
case 0:
|
||
|
;
|
||
|
}
|
||
|
|
||
|
if (FILE2INT(sp, data.data, data.size, wp, wlen)) {
|
||
|
if (!F_ISSET(sp, SC_CONV_ERROR)) {
|
||
|
F_SET(sp, SC_CONV_ERROR);
|
||
|
msgq(sp, M_ERR, "324|Conversion error on line %d", lno);
|
||
|
}
|
||
|
goto err3;
|
||
|
}
|
||
|
|
||
|
/* Reset the cache. */
|
||
|
if (wp != data.data) {
|
||
|
BINC_GOTOW(sp, sp->c_lp, sp->c_blen, wlen);
|
||
|
MEMCPYW(sp->c_lp, wp, wlen);
|
||
|
}
|
||
|
sp->c_lno = lno;
|
||
|
sp->c_len = wlen;
|
||
|
|
||
|
#if defined(DEBUG) && 0
|
||
|
vtrace(sp, "retrieve DB line %lu\n", (u_long)lno);
|
||
|
#endif
|
||
|
if (lenp != NULL)
|
||
|
*lenp = wlen;
|
||
|
if (pp != NULL)
|
||
|
*pp = sp->c_lp;
|
||
|
return (0);
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* db_delete --
|
||
|
* Delete a line from the file.
|
||
|
*
|
||
|
* PUBLIC: int db_delete __P((SCR *, db_recno_t));
|
||
|
*/
|
||
|
int
|
||
|
db_delete(SCR *sp, db_recno_t lno)
|
||
|
{
|
||
|
DBT key;
|
||
|
EXF *ep;
|
||
|
|
||
|
#if defined(DEBUG) && 0
|
||
|
vtrace(sp, "delete line %lu\n", (u_long)lno);
|
||
|
#endif
|
||
|
/* Check for no underlying file. */
|
||
|
if ((ep = sp->ep) == NULL) {
|
||
|
ex_emsg(sp, NULL, EXM_NOFILEYET);
|
||
|
return (1);
|
||
|
}
|
||
|
if (ep->l_win && ep->l_win != sp->wp) {
|
||
|
ex_emsg(sp, NULL, EXM_LOCKED);
|
||
|
return 1;
|
||
|
}
|
||
|
|
||
|
/* Update marks, @ and global commands. */
|
||
|
if (line_insdel(sp, LINE_DELETE, lno))
|
||
|
return 1;
|
||
|
|
||
|
/* Log before change. */
|
||
|
log_line(sp, lno, LOG_LINE_DELETE_B);
|
||
|
|
||
|
/* Update file. */
|
||
|
memset(&key, 0, sizeof(key));
|
||
|
key.data = &lno;
|
||
|
key.size = sizeof(lno);
|
||
|
if ((sp->db_error = ep->db->del(ep->db, NULL, &key, 0)) != 0) {
|
||
|
msgq(sp, M_DBERR, "003|unable to delete line %lu",
|
||
|
(u_long)lno);
|
||
|
return (1);
|
||
|
}
|
||
|
|
||
|
/* Flush the cache, update line count, before screen update. */
|
||
|
update_cache(sp, LINE_DELETE, lno);
|
||
|
|
||
|
/* File now modified. */
|
||
|
if (F_ISSET(ep, F_FIRSTMODIFY))
|
||
|
(void)rcv_init(sp);
|
||
|
F_SET(ep, F_MODIFIED);
|
||
|
|
||
|
/* Log after change. */
|
||
|
log_line(sp, lno, LOG_LINE_DELETE_F);
|
||
|
|
||
|
/* Update screen. */
|
||
|
return (scr_update(sp, lno, LINE_DELETE, 1));
|
||
|
}
|
||
|
|
||
|
/* maybe this could be simpler
|
||
|
*
|
||
|
* DB3 behaves differently from DB1
|
||
|
*
|
||
|
* if lno != 0 just go to lno and put the new line after it
|
||
|
* if lno == 0 then if there are any record, put in front of the first
|
||
|
* otherwise just append to the end thus creating the first
|
||
|
* line
|
||
|
*/
|
||
|
static int
|
||
|
append(SCR *sp, db_recno_t lno, const CHAR_T *p, size_t len, lnop_t op, int update)
|
||
|
{
|
||
|
DBT data, key;
|
||
|
DBC *dbcp_put;
|
||
|
EXF *ep;
|
||
|
const char *fp;
|
||
|
size_t flen;
|
||
|
int rval;
|
||
|
|
||
|
/* Check for no underlying file. */
|
||
|
if ((ep = sp->ep) == NULL) {
|
||
|
ex_emsg(sp, NULL, EXM_NOFILEYET);
|
||
|
return (1);
|
||
|
}
|
||
|
if (ep->l_win && ep->l_win != sp->wp) {
|
||
|
ex_emsg(sp, NULL, EXM_LOCKED);
|
||
|
return 1;
|
||
|
}
|
||
|
|
||
|
/* Log before change. */
|
||
|
log_line(sp, lno + 1, LOG_LINE_APPEND_B);
|
||
|
|
||
|
/* Update file. */
|
||
|
memset(&key, 0, sizeof(key));
|
||
|
key.data = &lno;
|
||
|
key.size = sizeof(lno);
|
||
|
memset(&data, 0, sizeof(data));
|
||
|
|
||
|
if ((sp->db_error = ep->db->cursor(ep->db, NULL, &dbcp_put, 0)) != 0)
|
||
|
return 1;
|
||
|
|
||
|
INT2FILE(sp, p, len, fp, flen);
|
||
|
|
||
|
if (lno != 0) {
|
||
|
if ((sp->db_error = dbcp_put->c_get(dbcp_put, &key, &data, DB_SET)) != 0)
|
||
|
goto err2;
|
||
|
|
||
|
data.data = __UNCONST(fp);
|
||
|
data.size = flen;
|
||
|
if ((sp->db_error = dbcp_put->c_put(dbcp_put, &key, &data, DB_AFTER)) != 0) {
|
||
|
err2:
|
||
|
(void)dbcp_put->c_close(dbcp_put);
|
||
|
msgq(sp, M_DBERR,
|
||
|
(op == LINE_APPEND)
|
||
|
? "004|unable to append to line %lu"
|
||
|
: "005|unable to insert at line %lu",
|
||
|
(u_long)lno);
|
||
|
return (1);
|
||
|
}
|
||
|
} else {
|
||
|
if ((sp->db_error = dbcp_put->c_get(dbcp_put, &key, &data, DB_FIRST)) != 0) {
|
||
|
if (sp->db_error != DB_NOTFOUND)
|
||
|
goto err2;
|
||
|
|
||
|
data.data = __UNCONST(fp);
|
||
|
data.size = flen;
|
||
|
if ((sp->db_error = ep->db->put(ep->db, NULL, &key, &data, DB_APPEND)) != 0) {
|
||
|
goto err2;
|
||
|
}
|
||
|
} else {
|
||
|
key.data = &lno;
|
||
|
key.size = sizeof(lno);
|
||
|
data.data = __UNCONST(fp);
|
||
|
data.size = flen;
|
||
|
if ((sp->db_error = dbcp_put->c_put(dbcp_put, &key, &data, DB_BEFORE)) != 0) {
|
||
|
goto err2;
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
(void)dbcp_put->c_close(dbcp_put);
|
||
|
|
||
|
/* Flush the cache, update line count, before screen update. */
|
||
|
update_cache(sp, LINE_INSERT, lno);
|
||
|
|
||
|
/* File now dirty. */
|
||
|
if (F_ISSET(ep, F_FIRSTMODIFY))
|
||
|
(void)rcv_init(sp);
|
||
|
F_SET(ep, F_MODIFIED);
|
||
|
|
||
|
/* Log after change. */
|
||
|
log_line(sp, lno + 1, LOG_LINE_APPEND_F);
|
||
|
|
||
|
/* Update marks, @ and global commands. */
|
||
|
rval = line_insdel(sp, LINE_INSERT, lno + 1);
|
||
|
|
||
|
/*
|
||
|
* Update screen.
|
||
|
*
|
||
|
* comment copied from db_append
|
||
|
* XXX
|
||
|
* Nasty hack. If multiple lines are input by the user, they aren't
|
||
|
* committed until an <ESC> is entered. The problem is the screen was
|
||
|
* updated/scrolled as each line was entered. So, when this routine
|
||
|
* is called to copy the new lines from the cut buffer into the file,
|
||
|
* it has to know not to update the screen again.
|
||
|
*/
|
||
|
return (scr_update(sp, lno + 1, LINE_INSERT, update) || rval);
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* db_append --
|
||
|
* Append a line into the file.
|
||
|
*
|
||
|
* PUBLIC: int db_append __P((SCR *, int, db_recno_t, CHAR_T *, size_t));
|
||
|
*/
|
||
|
int
|
||
|
db_append(SCR *sp, int update, db_recno_t lno, const CHAR_T *p, size_t len)
|
||
|
{
|
||
|
#if defined(DEBUG) && 0
|
||
|
vtrace(sp, "append to %lu: len %u {%.*s}\n", lno, len, MIN(len, 20), p);
|
||
|
#endif
|
||
|
|
||
|
/* Update file. */
|
||
|
return append(sp, lno, p, len, LINE_APPEND, update);
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* db_insert --
|
||
|
* Insert a line into the file.
|
||
|
*
|
||
|
* PUBLIC: int db_insert __P((SCR *, db_recno_t, CHAR_T *, size_t));
|
||
|
*/
|
||
|
int
|
||
|
db_insert(SCR *sp, db_recno_t lno, CHAR_T *p, size_t len)
|
||
|
{
|
||
|
#if defined(DEBUG) && 0
|
||
|
vtrace(sp, "insert before %lu: len %lu {%.*s}\n",
|
||
|
(u_long)lno, (u_long)len, MIN(len, 20), p);
|
||
|
#endif
|
||
|
return append(sp, lno - 1, p, len, LINE_INSERT, 1);
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* db_set --
|
||
|
* Store a line in the file.
|
||
|
*
|
||
|
* PUBLIC: int db_set __P((SCR *, db_recno_t, CHAR_T *, size_t));
|
||
|
*/
|
||
|
int
|
||
|
db_set(SCR *sp, db_recno_t lno, CHAR_T *p, size_t len)
|
||
|
{
|
||
|
DBT data, key;
|
||
|
EXF *ep;
|
||
|
const char *fp;
|
||
|
size_t flen;
|
||
|
|
||
|
#if defined(DEBUG) && 0
|
||
|
vtrace(sp, "replace line %lu: len %lu {%.*s}\n",
|
||
|
(u_long)lno, (u_long)len, MIN(len, 20), p);
|
||
|
#endif
|
||
|
/* Check for no underlying file. */
|
||
|
if ((ep = sp->ep) == NULL) {
|
||
|
ex_emsg(sp, NULL, EXM_NOFILEYET);
|
||
|
return (1);
|
||
|
}
|
||
|
if (ep->l_win && ep->l_win != sp->wp) {
|
||
|
ex_emsg(sp, NULL, EXM_LOCKED);
|
||
|
return 1;
|
||
|
}
|
||
|
|
||
|
/* Log before change. */
|
||
|
log_line(sp, lno, LOG_LINE_RESET_B);
|
||
|
|
||
|
INT2FILE(sp, p, len, fp, flen);
|
||
|
|
||
|
/* Update file. */
|
||
|
memset(&key, 0, sizeof(key));
|
||
|
key.data = &lno;
|
||
|
key.size = sizeof(lno);
|
||
|
memset(&data, 0, sizeof(data));
|
||
|
data.data = __UNCONST(fp);
|
||
|
data.size = flen;
|
||
|
if ((sp->db_error = ep->db->put(ep->db, NULL, &key, &data, 0)) != 0) {
|
||
|
msgq(sp, M_DBERR, "006|unable to store line %lu", (u_long)lno);
|
||
|
return (1);
|
||
|
}
|
||
|
|
||
|
/* Flush the cache, update line count, before screen update. */
|
||
|
update_cache(sp, LINE_RESET, lno);
|
||
|
|
||
|
/* File now dirty. */
|
||
|
if (F_ISSET(ep, F_FIRSTMODIFY))
|
||
|
(void)rcv_init(sp);
|
||
|
F_SET(ep, F_MODIFIED);
|
||
|
|
||
|
/* Log after change. */
|
||
|
log_line(sp, lno, LOG_LINE_RESET_F);
|
||
|
|
||
|
/* Update screen. */
|
||
|
return (scr_update(sp, lno, LINE_RESET, 1));
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* db_exist --
|
||
|
* Return if a line exists.
|
||
|
*
|
||
|
* PUBLIC: int db_exist __P((SCR *, db_recno_t));
|
||
|
*/
|
||
|
int
|
||
|
db_exist(SCR *sp, db_recno_t lno)
|
||
|
{
|
||
|
EXF *ep;
|
||
|
|
||
|
/* Check for no underlying file. */
|
||
|
if ((ep = sp->ep) == NULL) {
|
||
|
ex_emsg(sp, NULL, EXM_NOFILEYET);
|
||
|
return (1);
|
||
|
}
|
||
|
|
||
|
if (lno == OOBLNO)
|
||
|
return (0);
|
||
|
|
||
|
/*
|
||
|
* Check the last-line number cache. Adjust the cached line
|
||
|
* number for the lines used by the text input buffers.
|
||
|
*/
|
||
|
if (ep->c_nlines != OOBLNO)
|
||
|
return (lno <= (F_ISSET(sp, SC_TINPUT) ?
|
||
|
ep->c_nlines + (((TEXT *)sp->tiq.cqh_last)->lno -
|
||
|
((TEXT *)sp->tiq.cqh_first)->lno) : ep->c_nlines));
|
||
|
|
||
|
/* Go get the line. */
|
||
|
return (!db_get(sp, lno, 0, NULL, NULL));
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* db_last --
|
||
|
* Return the number of lines in the file.
|
||
|
*
|
||
|
* PUBLIC: int db_last __P((SCR *, db_recno_t *));
|
||
|
*/
|
||
|
int
|
||
|
db_last(SCR *sp, db_recno_t *lnop)
|
||
|
{
|
||
|
DBT data, key;
|
||
|
DBC *dbcp;
|
||
|
EXF *ep;
|
||
|
db_recno_t lno;
|
||
|
const CHAR_T *wp;
|
||
|
size_t wlen;
|
||
|
|
||
|
/* Check for no underlying file. */
|
||
|
if ((ep = sp->ep) == NULL) {
|
||
|
ex_emsg(sp, NULL, EXM_NOFILEYET);
|
||
|
return (1);
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* Check the last-line number cache. Adjust the cached line
|
||
|
* number for the lines used by the text input buffers.
|
||
|
*/
|
||
|
if (ep->c_nlines != OOBLNO) {
|
||
|
*lnop = ep->c_nlines;
|
||
|
if (F_ISSET(sp, SC_TINPUT))
|
||
|
*lnop += ((TEXT *)sp->tiq.cqh_last)->lno -
|
||
|
((TEXT *)sp->tiq.cqh_first)->lno;
|
||
|
return (0);
|
||
|
}
|
||
|
|
||
|
memset(&key, 0, sizeof(key));
|
||
|
key.data = &lno;
|
||
|
key.size = sizeof(lno);
|
||
|
memset(&data, 0, sizeof(data));
|
||
|
|
||
|
if ((sp->db_error = ep->db->cursor(ep->db, NULL, &dbcp, 0)) != 0)
|
||
|
goto err1;
|
||
|
switch (sp->db_error = dbcp->c_get(dbcp, &key, &data, DB_LAST)) {
|
||
|
case DB_NOTFOUND:
|
||
|
*lnop = 0;
|
||
|
return (0);
|
||
|
default:
|
||
|
(void)dbcp->c_close(dbcp);
|
||
|
alloc_err:
|
||
|
err1:
|
||
|
msgq(sp, M_DBERR, "007|unable to get last line");
|
||
|
*lnop = 0;
|
||
|
return (1);
|
||
|
case 0:
|
||
|
;
|
||
|
}
|
||
|
|
||
|
memcpy(&lno, key.data, sizeof(lno));
|
||
|
|
||
|
if (lno != sp->c_lno) {
|
||
|
FILE2INT(sp, data.data, data.size, wp, wlen);
|
||
|
|
||
|
/* Fill the cache. */
|
||
|
BINC_GOTOW(sp, sp->c_lp, sp->c_blen, wlen);
|
||
|
MEMCPYW(sp->c_lp, wp, wlen);
|
||
|
sp->c_lno = lno;
|
||
|
sp->c_len = wlen;
|
||
|
}
|
||
|
ep->c_nlines = lno;
|
||
|
|
||
|
(void)dbcp->c_close(dbcp);
|
||
|
|
||
|
/* Return the value. */
|
||
|
*lnop = (F_ISSET(sp, SC_TINPUT) &&
|
||
|
((TEXT *)sp->tiq.cqh_last)->lno > lno ?
|
||
|
((TEXT *)sp->tiq.cqh_last)->lno : lno);
|
||
|
return (0);
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* db_err --
|
||
|
* Report a line error.
|
||
|
*
|
||
|
* PUBLIC: void db_err __P((SCR *, db_recno_t));
|
||
|
*/
|
||
|
void
|
||
|
db_err(SCR *sp, db_recno_t lno)
|
||
|
{
|
||
|
msgq(sp, M_ERR,
|
||
|
"008|Error: unable to retrieve line %lu", (u_long)lno);
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* scr_update --
|
||
|
* Update all of the screens that are backed by the file that
|
||
|
* just changed.
|
||
|
*
|
||
|
* PUBLIC: int scr_update __P((SCR *sp, db_recno_t lno,
|
||
|
* PUBLIC: lnop_t op, int current));
|
||
|
*/
|
||
|
int
|
||
|
scr_update(SCR *sp, db_recno_t lno, lnop_t op, int current)
|
||
|
{
|
||
|
EXF *ep;
|
||
|
SCR *tsp;
|
||
|
WIN *wp;
|
||
|
|
||
|
if (F_ISSET(sp, SC_EX))
|
||
|
return (0);
|
||
|
|
||
|
/* XXXX goes outside of window */
|
||
|
ep = sp->ep;
|
||
|
if (ep->refcnt != 1)
|
||
|
for (wp = sp->gp->dq.cqh_first; wp != (void *)&sp->gp->dq;
|
||
|
wp = wp->q.cqe_next)
|
||
|
for (tsp = wp->scrq.cqh_first;
|
||
|
tsp != (void *)&wp->scrq; tsp = tsp->q.cqe_next)
|
||
|
if (sp != tsp && tsp->ep == ep)
|
||
|
if (vs_change(tsp, lno, op))
|
||
|
return (1);
|
||
|
return (current ? vs_change(sp, lno, op) : 0);
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* PUBLIC: void update_cache __P((SCR *sp, lnop_t op, db_recno_t lno));
|
||
|
*/
|
||
|
void
|
||
|
update_cache(SCR *sp, lnop_t op, db_recno_t lno)
|
||
|
{
|
||
|
SCR* scrp;
|
||
|
EXF *ep;
|
||
|
|
||
|
ep = sp->ep;
|
||
|
|
||
|
/* Flush the cache, update line count, before screen update. */
|
||
|
/* The flushing is probably not needed, since it was incorrect
|
||
|
* for db_insert. It might be better to adjust it, like
|
||
|
* marks, @ and global
|
||
|
*/
|
||
|
for (scrp = ep->scrq.cqh_first; scrp != (void *)&ep->scrq;
|
||
|
scrp = scrp->eq.cqe_next)
|
||
|
switch (op) {
|
||
|
case LINE_INSERT:
|
||
|
case LINE_DELETE:
|
||
|
if (lno <= scrp->c_lno)
|
||
|
scrp->c_lno = OOBLNO;
|
||
|
break;
|
||
|
case LINE_RESET:
|
||
|
if (lno == scrp->c_lno)
|
||
|
scrp->c_lno = OOBLNO;
|
||
|
/*FALLTHROUGH*/
|
||
|
case LINE_APPEND:
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
if (ep->c_nlines != OOBLNO)
|
||
|
switch (op) {
|
||
|
case LINE_INSERT:
|
||
|
++ep->c_nlines;
|
||
|
break;
|
||
|
case LINE_DELETE:
|
||
|
--ep->c_nlines;
|
||
|
/*FALLTHROUGH*/
|
||
|
case LINE_APPEND:
|
||
|
case LINE_RESET:
|
||
|
break;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* PUBLIC: int line_insdel __P((SCR *sp, lnop_t op, db_recno_t lno));
|
||
|
*/
|
||
|
int
|
||
|
line_insdel(SCR *sp, lnop_t op, db_recno_t lno)
|
||
|
{
|
||
|
int rval;
|
||
|
|
||
|
/* Update marks, @ and global commands. */
|
||
|
rval = 0;
|
||
|
if (mark_insdel(sp, op, lno))
|
||
|
rval = 1;
|
||
|
if (ex_g_insdel(sp, op, lno))
|
||
|
rval = 1;
|
||
|
|
||
|
return rval;
|
||
|
}
|