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/* $Id: pltcl.c,v 1.20 2004/01/17 16:41:40 rlaboiss Exp $
*
* Main program for Tcl-interface to PLplot. Allows interpretive
* execution of plotting primitives without regard to output driver.
*
* Maurice LeBrun
* IFS, University of Texas at Austin
* 19-Jun-1994
*
* Copyright (C) 2004 Joao Cardoso
*
* This file is part of PLplot.
*
* PLplot is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Library Public License as published
* by the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* PLplot is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with PLplot; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include "plplotP.h"
#include "pltcl.h"
#ifdef HAVE_ITCL
# ifndef HAVE_ITCLDECLS_H
# define RESOURCE_INCLUDED
# endif
# include <itcl.h>
#endif
static int
AppInit(Tcl_Interp *interp);
/*--------------------------------------------------------------------------*\
* main --
*
* Just a stub routine to call pltclMain. The latter is nice to have when
* building extended tclsh's, since then you don't have to rely on sucking
* the Tcl main out of libtcl (which doesn't work correctly on all
* systems/compilers/linkers/etc). Hopefully in the future Tcl will
* supply a sufficiently capable tclMain() type function that can be used
* instead.
\*--------------------------------------------------------------------------*/
int
main(int argc, char **argv)
{
exit(pltclMain(argc, argv, NULL, AppInit));
}
/*--------------------------------------------------------------------------*\
* plExitCmd
*
* PLplot/Tcl extension command -- handle exit.
* The reason for overriding the normal exit command is so we can tell
* the PLplot library to clean up.
\*--------------------------------------------------------------------------*/
static int
plExitCmd(ClientData clientData, Tcl_Interp *interp, int argc, char **argv)
{
/* Print error message if one given */
if (interp->result != NULL && interp->result[0] != '\0')
fprintf(stderr, "%s\n", interp->result);
plspause(0);
plend();
Tcl_UnsetVar(interp, "tcl_prompt1", 0);
Tcl_Eval(interp, "tclexit");
return TCL_OK;
}
/*--------------------------------------------------------------------------*\
* prPromptCmd
*
* PLplot/Tcl extension command -- print the prompt.
* Allows much more flexible setting of the prompt.
\*--------------------------------------------------------------------------*/
static int
prPromptCmd(ClientData clientData, Tcl_Interp *interp, int argc, char **argv)
{
PLStream *pls;
char prompt[80];
plgpls(&pls);
if (pls->ipls == 0)
sprintf(prompt, "pltext; puts -nonewline \"pltcl> \"; flush stdout");
else
sprintf(prompt, "pltext; puts -nonewline \"pltcl_%d> \"; flush stdout", pls->ipls);
Tcl_VarEval(interp, prompt, 0);
return TCL_OK;
}
/*
*--------------------------------------------------------------------------
*
* AppInit --
*
* This procedure performs application-specific initialization.
* Most applications, especially those that incorporate additional
* packages, will have their own version of this procedure.
*
* Results:
* Returns a standard Tcl completion code, and leaves an error
* message in interp->result if an error occurs.
*
* Side effects:
* Depends on the startup script.
*
*--------------------------------------------------------------------------
*/
static int
AppInit(Tcl_Interp *interp)
{
/*
* Call the init procedures for included packages. Each call should
* look like this:
*
* if (Mod_Init(interp) == TCL_ERROR) {
* return TCL_ERROR;
* }
*
* where "Mod" is the name of the module.
*/
if (Tcl_Init(interp) == TCL_ERROR) {
return TCL_ERROR;
}
#ifdef HAVE_ITCL
if (Itcl_Init(interp) == TCL_ERROR) {
return TCL_ERROR;
}
#endif
if (Pltcl_Init(interp) == TCL_ERROR) {
return TCL_ERROR;
}
/* Application-specific startup. That means: for use in pltcl ONLY. */
/* Rename "exit" to "tclexit", and insert custom exit handler */
Tcl_VarEval(interp, "rename exit tclexit", (char *) NULL);
Tcl_CreateCommand(interp, "exit", (Tcl_CmdProc *) plExitCmd,
(ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
Tcl_CreateCommand(interp, "pr_prompt", (Tcl_CmdProc *) prPromptCmd,
(ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
/* Custom prompt, to make sure we are in text mode when entering commands */
Tcl_SetVar(interp, "tcl_prompt1", "pr_prompt", 0);
return TCL_OK;
}
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