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/* 

 * FILE: "/home/joze/tmp/tclreadline/tclreadline.c"
 * LAST MODIFIED: "Sat Oct 03 03:06:54 1998 (joze)"
 * (c) 1998 by Johannes Zellner
 * Johannes.Zellner@physik.uni-karlsruhe.de
 * $Id$

 */






















#include <tcl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <readline.h>
#include <history.h>



#define MALLOC(size) Tcl_Alloc ((int) size)
#define FREE(ptr) if (ptr) Tcl_Free ((char *) ptr)

#define _CMD_SET	(1 << 0)
#define _CMD_GET	(1 << 1)
#define _CMD_SUB_GET	(1 << 2)
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 /* ==================================================================
    FILE: "/home/joze/src/tclreadline/tclreadline.c"
    LAST MODIFIED: "Sun Feb 28 15:01:31 1999 (joze)"
    (C) 1998, 1999 by Johannes Zellner
    Johannes.Zellner@physik.uni-karlsruhe.de
    $Id$
    ---

    tclreadline -- gnu readline for tcl
    Copyright (C) 1999  Johannes Zellner

    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License
    as published by the Free Software Foundation; either version 2
    of the License, or (at your option) any later version.

    This program 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 General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

    Johannes.Zellner@physik.uni-karlsruhe.de
    http://krisal.physik.uni-karlsruhe.de/~joze
    ================================================================== */  


#include <tcl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <readline.h>
#include <history.h>

#include <tclreadline.h>

#define MALLOC(size) Tcl_Alloc ((int) size)
#define FREE(ptr) if (ptr) Tcl_Free ((char *) ptr)

#define _CMD_SET	(1 << 0)
#define _CMD_GET	(1 << 1)
#define _CMD_SUB_GET	(1 << 2)
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do {                    \
    STRIPLEFT (ptr);    \
    STRIPRIGHT (ptr);   \
} while (0)



    /*
extern char *rl_readline_name = "tclreadline";
    */


/*
 * forward declarations.
 */
int	TclReadlineCmd	(ClientData clientData, Tcl_Interp *interp,
                         int argc, char **argv);







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do {                    \
    STRIPLEFT (ptr);    \
    STRIPRIGHT (ptr);   \
} while (0)








/*
 * forward declarations.
 */
int	TclReadlineCmd	(ClientData clientData, Tcl_Interp *interp,
                         int argc, char **argv);
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int	TclReadlineEventHook	(void);
int	TclReadlineParse	(char **args, int maxargs, char *buf);


static int line_complete = 0;
static char *line = (char *) NULL;









int TclReadlineCmd (clientData, interp, argc, argv)
    ClientData clientData;	/* Main window associated with interpreter  */
    Tcl_Interp *interp;		/* Current interpreter                      */
    int argc;			/* Number of arguments                      */
    char **argv;		/* Argument strings                         */







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int	TclReadlineEventHook	(void);
int	TclReadlineParse	(char **args, int maxargs, char *buf);


static int line_complete = 0;
static char *line = (char *) NULL;


/*
 * Script to set the tclreadline library path in the
 * variable global "tclreadline_library"
 */



int TclReadlineCmd (clientData, interp, argc, argv)
    ClientData clientData;	/* Main window associated with interpreter  */
    Tcl_Interp *interp;		/* Current interpreter                      */
    int argc;			/* Number of arguments                      */
    char **argv;		/* Argument strings                         */
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    else if (c == 'a'  && strncmp (argv[1], "add", length) == 0) {
        if (argc != 3)
            goto BAD_COMMAND;
        else if (TclReadlineKnownCommands (argv[2], (int) 0, _CMD_SET))
            Tcl_AppendResult (interp, "unable to add command \"",
                    argv[2], "\"\n", (char *) NULL);
    }








    else
        goto BAD_COMMAND;


    return TCL_OK;

BAD_COMMAND:
    Tcl_AppendResult (interp,
            "wrong # args: should be \"readline option ?arg ...?\"",
	    (char *) NULL);
    return TCL_ERROR;

}

void TclReadlineDataAvailableHandler (ClientData clientData, int mask)
{
    if (mask & TCL_READABLE)
        rl_callback_read_char ();







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    else if (c == 'a'  && strncmp (argv[1], "add", length) == 0) {
        if (argc != 3)
            goto BAD_COMMAND;
        else if (TclReadlineKnownCommands (argv[2], (int) 0, _CMD_SET))
            Tcl_AppendResult (interp, "unable to add command \"",
                    argv[2], "\"\n", (char *) NULL);
    }
    else if (c == 'c'  && strncmp (argv[1], "complete", length) == 0) {
        if (argc != 3)
            goto BAD_COMMAND;
        else if (Tcl_CommandComplete (argv[2]))
            Tcl_AppendResult (interp, "1", (char *) NULL);
        else
            Tcl_AppendResult (interp, "0", (char *) NULL);
    }
    else
        goto BAD_COMMAND;


    return TCL_OK;

BAD_COMMAND:
    Tcl_AppendResult (interp,
            "wrong # args: should be \"readline option ?arg ...?\"",
	    (char *) NULL);
    return (TCL_ERROR);

}

void TclReadlineDataAvailableHandler (ClientData clientData, int mask)
{
    if (mask & TCL_READABLE)
        rl_callback_read_char ();
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int Tclreadline_SafeInit (Tcl_Interp *interp)
{
    return (Tclreadline_Init (interp));
}

int Tclreadline_Init (Tcl_Interp *interp)
{

    Tcl_CreateCommand (interp, "::tclreadline::readline", TclReadlineCmd,
	    (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);

    return (Tcl_PkgProvide (interp, "tclreadline", TCLREADLINE_VERSION));
}

char *TclReadlineInitialize (char *historyfile)
{


    using_history ();
    /*
    rl_event_hook = TclReadlineEventHook;
    */

    /*
     * try to read historyfile in home
     * directory. If this failes, this
     * is *not* an error.
     */
    rl_attempted_completion_function = (CPPFunction *) TclReadlineCompletion;







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int Tclreadline_SafeInit (Tcl_Interp *interp)
{
    return (Tclreadline_Init (interp));
}

int Tclreadline_Init (Tcl_Interp *interp)
{
    
    Tcl_CreateCommand (interp, "::tclreadline::readline", TclReadlineCmd,
	    (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);

    return (Tcl_PkgProvide (interp, "tclreadline", TCLREADLINE_VERSION));
}

char *TclReadlineInitialize (char *historyfile)
{

    rl_readline_name = "tclreadline";
    using_history ();




    /*
     * try to read historyfile in home
     * directory. If this failes, this
     * is *not* an error.
     */
    rl_attempted_completion_function = (CPPFunction *) TclReadlineCompletion;