freebsd-dev/contrib/nvi/ex/ex_tcl.c

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/*-
* 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.
* Copyright (c) 1995
* George V. Neville-Neil. All rights reserved.
*
* See the LICENSE file for redistribution information.
*/
#include "config.h"
#ifndef lint
static const char sccsid[] = "@(#)ex_tcl.c 8.10 (Berkeley) 9/15/96";
#endif /* not lint */
#include <sys/types.h>
#include <sys/queue.h>
#include <bitstring.h>
#include <limits.h>
#include <stdio.h>
#include <string.h>
#include <termios.h>
#include <unistd.h>
#include "../common/common.h"
#ifdef HAVE_TCL_INTERP
#include <tcl.h>
#endif
/*
* ex_tcl -- :[line [,line]] tcl [command]
* Run a command through the tcl interpreter.
*
* PUBLIC: int ex_tcl __P((SCR*, EXCMD *));
*/
int
ex_tcl(sp, cmdp)
SCR *sp;
EXCMD *cmdp;
{
#ifdef HAVE_TCL_INTERP
CHAR_T *p;
GS *gp;
size_t len;
char buf[128];
/* Initialize the interpreter. */
gp = sp->gp;
if (gp->tcl_interp == NULL && tcl_init(gp))
return (1);
/* Skip leading white space. */
if (cmdp->argc != 0)
for (p = cmdp->argv[0]->bp,
len = cmdp->argv[0]->len; len > 0; --len, ++p)
if (!isblank(*p))
break;
if (cmdp->argc == 0 || len == 0) {
ex_emsg(sp, cmdp->cmd->usage, EXM_USAGE);
return (1);
}
(void)snprintf(buf, sizeof(buf),
"set viScreenId %d\nset viStartLine %lu\nset viStopLine %lu",
sp->id, cmdp->addr1.lno, cmdp->addr2.lno);
if (Tcl_Eval(gp->tcl_interp, buf) == TCL_OK &&
Tcl_Eval(gp->tcl_interp, cmdp->argv[0]->bp) == TCL_OK)
return (0);
msgq(sp, M_ERR, "Tcl: %s", ((Tcl_Interp *)gp->tcl_interp)->result);
return (1);
#else
msgq(sp, M_ERR, "302|Vi was not loaded with a Tcl interpreter");
return (1);
#endif /* HAVE_TCL_INTERP */
}