457 lines
7.7 KiB
C
457 lines
7.7 KiB
C
/* $NetBSD: api.c,v 1.3 1998/01/09 08:06:28 perry Exp $ */
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/*-
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* Copyright (c) 1992, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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* Copyright (c) 1992, 1993, 1994, 1995, 1996
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* Keith Bostic. All rights reserved.
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* Copyright (c) 1995
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* George V. Neville-Neil. All rights reserved.
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*
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* See the LICENSE file for redistribution information.
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*/
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#include "config.h"
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#ifndef lint
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static const char sccsid[] = "@(#)api.c 8.18 (Berkeley) 4/27/96";
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#endif /* not lint */
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#include <sys/types.h>
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#include <sys/queue.h>
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#include <sys/time.h>
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#include <bitstring.h>
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#include <limits.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <termios.h>
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#include <unistd.h>
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#include "../common/common.h"
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extern GS *__global_list; /* XXX */
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/*
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* api_fscreen --
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* Return a pointer to the screen specified by the screen id
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* or a file name.
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*
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* PUBLIC: SCR *api_fscreen __P((int, char *));
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*/
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SCR *
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api_fscreen(id, name)
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int id;
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char *name;
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{
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GS *gp;
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SCR *tsp;
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gp = __global_list;
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/* Search the displayed list. */
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for (tsp = gp->dq.cqh_first;
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tsp != (void *)&gp->dq; tsp = tsp->q.cqe_next)
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if (name == NULL) {
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if (id == tsp->id)
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return (tsp);
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} else if (!strcmp(name, tsp->frp->name))
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return (tsp);
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/* Search the hidden list. */
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for (tsp = gp->hq.cqh_first;
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tsp != (void *)&gp->hq; tsp = tsp->q.cqe_next)
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if (name == NULL) {
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if (id == tsp->id)
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return (tsp);
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} else if (!strcmp(name, tsp->frp->name))
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return (tsp);
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return (NULL);
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}
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/*
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* api_aline --
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* Append a line.
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*
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* PUBLIC: int api_aline __P((SCR *, recno_t, char *, size_t));
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*/
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int
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api_aline(sp, lno, line, len)
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SCR *sp;
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recno_t lno;
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char *line;
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size_t len;
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{
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return (db_append(sp, 1, lno, line, len));
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}
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/*
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* api_dline --
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* Delete a line.
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*
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* PUBLIC: int api_dline __P((SCR *, recno_t));
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*/
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int
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api_dline(sp, lno)
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SCR *sp;
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recno_t lno;
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{
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return (db_delete(sp, lno));
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}
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/*
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* api_gline --
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* Get a line.
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*
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* PUBLIC: int api_gline __P((SCR *, recno_t, char **, size_t *));
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*/
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int
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api_gline(sp, lno, linepp, lenp)
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SCR *sp;
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recno_t lno;
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char **linepp;
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size_t *lenp;
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{
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int isempty;
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if (db_eget(sp, lno, linepp, lenp, &isempty)) {
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if (isempty)
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msgq(sp, M_ERR, "209|The file is empty");
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return (1);
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}
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return (0);
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}
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/*
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* api_iline --
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* Insert a line.
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*
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* PUBLIC: int api_iline __P((SCR *, recno_t, char *, size_t));
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*/
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int
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api_iline(sp, lno, line, len)
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SCR *sp;
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recno_t lno;
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char *line;
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size_t len;
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{
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return (db_insert(sp, lno, line, len));
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}
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/*
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* api_lline --
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* Return the line number of the last line in the file.
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*
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* PUBLIC: int api_lline __P((SCR *, recno_t *));
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*/
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int
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api_lline(sp, lnop)
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SCR *sp;
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recno_t *lnop;
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{
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return (db_last(sp, lnop));
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}
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/*
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* api_sline --
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* Set a line.
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*
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* PUBLIC: int api_sline __P((SCR *, recno_t, char *, size_t));
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*/
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int
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api_sline(sp, lno, line, len)
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SCR *sp;
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recno_t lno;
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char *line;
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size_t len;
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{
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return (db_set(sp, lno, line, len));
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}
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/*
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* api_getmark --
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* Get the mark.
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*
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* PUBLIC: int api_getmark __P((SCR *, int, MARK *));
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*/
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int
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api_getmark(sp, markname, mp)
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SCR *sp;
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int markname;
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MARK *mp;
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{
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return (mark_get(sp, (ARG_CHAR_T)markname, mp, M_ERR));
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}
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/*
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* api_setmark --
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* Set the mark.
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*
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* PUBLIC: int api_setmark __P((SCR *, int, MARK *));
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*/
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int
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api_setmark(sp, markname, mp)
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SCR *sp;
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int markname;
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MARK *mp;
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{
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return (mark_set(sp, (ARG_CHAR_T)markname, mp, 1));
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}
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/*
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* api_getcursor --
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* Get the cursor.
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*
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* PUBLIC: int api_getcursor __P((SCR *, MARK *));
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*/
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int
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api_getcursor(sp, mp)
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SCR *sp;
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MARK *mp;
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{
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mp->lno = sp->lno;
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mp->cno = sp->cno;
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return (0);
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}
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/*
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* api_setcursor --
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* Set the cursor.
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*
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* PUBLIC: int api_setcursor __P((SCR *, MARK *));
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*/
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int
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api_setcursor(sp, mp)
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SCR *sp;
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MARK *mp;
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{
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size_t len;
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if (db_get(sp, mp->lno, DBG_FATAL, NULL, &len))
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return (1);
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if (mp->cno < 0 || mp->cno > len) {
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msgq(sp, M_ERR, "Cursor set to nonexistent column");
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return (1);
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}
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/* Set the cursor. */
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sp->lno = mp->lno;
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sp->cno = mp->cno;
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return (0);
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}
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/*
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* api_emessage --
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* Print an error message.
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*
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* PUBLIC: void api_emessage __P((SCR *, char *));
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*/
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void
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api_emessage(sp, text)
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SCR *sp;
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char *text;
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{
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msgq(sp, M_ERR, "%s", text);
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}
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/*
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* api_imessage --
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* Print an informational message.
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*
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* PUBLIC: void api_imessage __P((SCR *, char *));
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*/
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void
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api_imessage(sp, text)
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SCR *sp;
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char *text;
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{
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msgq(sp, M_INFO, "%s", text);
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}
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/*
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* api_iscreen
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* Create a new screen and return its id.
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*
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* PUBLIC: int api_iscreen __P((SCR *, char *, int *));
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*/
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int
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api_iscreen(sp, file, idp)
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SCR *sp;
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char *file;
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int *idp;
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{
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ARGS *ap[2], a;
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EXCMD cmd;
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if (file) {
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ex_cinit(&cmd, C_EDIT, 0, OOBLNO, OOBLNO, 0, ap);
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ex_cadd(&cmd, &a, file, strlen(file));
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} else
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ex_cinit(&cmd, C_EDIT, 0, OOBLNO, OOBLNO, 0, NULL);
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cmd.flags |= E_NEWSCREEN; /* XXX */
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if (cmd.cmd->fn(sp, &cmd))
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return (1);
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*idp = sp->nextdisp->id;
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return (0);
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}
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/*
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* api_escreen
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* End a screen.
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*
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* PUBLIC: int api_escreen __P((SCR *));
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*/
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int
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api_escreen(sp)
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SCR *sp;
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{
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EXCMD cmd;
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/*
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* XXX
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* If the interpreter exits anything other than the current
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* screen, vi isn't going to update everything correctly.
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*/
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ex_cinit(&cmd, C_QUIT, 0, OOBLNO, OOBLNO, 0, NULL);
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return (cmd.cmd->fn(sp, &cmd));
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}
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/*
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* api_swscreen --
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* Switch to a new screen.
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*
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* PUBLIC: int api_swscreen __P((SCR *, SCR *));
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*/
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int
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api_swscreen(sp, new)
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SCR *sp, *new;
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{
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/*
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* XXX
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* If the interpreter switches from anything other than the
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* current screen, vi isn't going to update everything correctly.
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*/
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sp->nextdisp = new;
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F_SET(sp, SC_SSWITCH);
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return (0);
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}
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/*
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* api_map --
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* Map a key.
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*
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* PUBLIC: int api_map __P((SCR *, char *, char *, size_t));
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*/
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int
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api_map(sp, name, map, len)
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SCR *sp;
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char *name, *map;
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size_t len;
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{
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ARGS *ap[3], a, b;
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EXCMD cmd;
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ex_cinit(&cmd, C_MAP, 0, OOBLNO, OOBLNO, 0, ap);
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ex_cadd(&cmd, &a, name, strlen(name));
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ex_cadd(&cmd, &b, map, len);
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return (cmd.cmd->fn(sp, &cmd));
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}
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/*
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* api_unmap --
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* Unmap a key.
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*
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* PUBLIC: int api_unmap __P((SCR *, char *));
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*/
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int
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api_unmap(sp, name)
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SCR *sp;
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char *name;
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{
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ARGS *ap[2], a;
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EXCMD cmd;
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ex_cinit(&cmd, C_UNMAP, 0, OOBLNO, OOBLNO, 0, ap);
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ex_cadd(&cmd, &a, name, strlen(name));
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return (cmd.cmd->fn(sp, &cmd));
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}
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/*
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* api_opts_get --
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* Return a option value as a string, in allocated memory.
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*
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* PUBLIC: int api_opts_get __P((SCR *, char *, char **));
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*/
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int
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api_opts_get(sp, name, value)
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SCR *sp;
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char *name, **value;
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{
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int offset;
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OPTLIST const *op;
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if ((op = opts_search(name)) == NULL)
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return (1);
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offset = op - optlist;
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switch (op->type) {
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case OPT_0BOOL:
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case OPT_1BOOL:
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MALLOC_RET(sp, *value, char *, strlen(op->name) + 2 + 1);
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(void)sprintf(*value,
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"%s%s", O_ISSET(sp, offset) ? "" : "no", op->name);
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break;
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case OPT_NUM:
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MALLOC_RET(sp, *value, char *, 20);
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(void)sprintf(*value, "%ld", (u_long)O_VAL(sp, offset));
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break;
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case OPT_STR:
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if (O_STR(sp, offset) == NULL) {
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MALLOC_RET(sp, *value, char *, 2);
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value[0] = '\0';
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} else {
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MALLOC_RET(sp,
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*value, char *, strlen(O_STR(sp, offset)) + 1);
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(void)sprintf(*value, "%s", O_STR(sp, offset));
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}
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break;
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}
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return (0);
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}
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/*
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* api_opts_set --
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* Set options.
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*
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* PUBLIC: int api_opts_set __P((SCR *, char *));
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*/
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int
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api_opts_set(sp, name)
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SCR *sp;
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char *name;
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{
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ARGS *ap[2], a;
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EXCMD cmd;
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ex_cinit(&cmd, C_SET, 0, OOBLNO, OOBLNO, 0, ap);
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ex_cadd(&cmd, &a, name, strlen(name));
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return (cmd.cmd->fn(sp, &cmd));
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}
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/*
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* api_run_str --
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* Execute a string as an ex command.
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*
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* PUBLIC: int api_run_str __P((SCR *, char *));
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*/
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int
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api_run_str(sp, cmd)
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SCR *sp;
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char *cmd;
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{
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return (ex_run_str(sp, NULL, cmd, strlen(cmd), 0, 0));
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}
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