#ifndef _WIN32
/*
Copyright (C) 2002 Antoine Rousseau 

This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.

This library 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
Lesser General Public License for more details.

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

*/

/*#include <m_imp.h>*/
#include "m_pd.h"
#include "g_canvas.h"

#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <libgen.h>
#include <string.h>

extern t_canvas *canvas_list;	    	    /* list of all root canvases */
extern int canvas_getdollarzero( void);

struct _canvasenvironment
{
    t_symbol *ce_dir;	/* directory patch lives in */
    int ce_argc;    	/* number of "$" arguments */
    t_atom *ce_argv;	/* array of "$" arguments */
    int ce_dollarzero;	/* value of "$0" */
};

typedef struct _absolutepath
{
    t_object x_obj;
    t_canvas *x_canvas;
	int x_dolzero;
	int x_realized;
}t_absolutepath;

t_class *absolutepath_class;

void absolutepath_setup(void);

static t_glist *getcanvas(t_glist *can,int d0)
{
	t_canvas *retcan=0;
	t_gobj *ob;
	
	if((can->gl_env)&&(can->gl_env->ce_dollarzero==d0)){
		return can;
	}
	
	ob=can->gl_list;
	while(ob&&(retcan==0)) {
		if (pd_class(&ob->g_pd) == canvas_class)
			retcan=getcanvas((t_glist *)ob,d0);
		ob=ob->g_next;
	} 

	if((!retcan)&&(can->gl_next)) retcan=getcanvas((t_glist *)can->gl_next,d0);
	return retcan;
}


static void absolutepath_symbol(t_absolutepath *x,t_symbol *sym)
{
	t_canvas *can=0;
    char buf[MAXPDSTRING], *bufptr,
		*instr=sym->s_name,
		canname[MAXPDSTRING],totaldir[MAXPDSTRING],
		*cnamedir,
		*candir;
	unsigned int n,i=0;
	int fd;

	if(!x->x_realized) can=(t_canvas*)getcanvas(canvas_list,x->x_dolzero);
	if(can) {
		x->x_canvas = can;
		x->x_realized = 1;
		//post("found $0 canvas : %x %d ",x->x_canvas, x->x_canvas->gl_env->ce_dollarzero );
	}

	if(!instr) return;

	candir=canvas_getdir(x->x_canvas)->s_name;
	if(!candir) candir="";
	
	//post("input= %s   candir= %s   glname=%s",instr,candir,x->x_canvas->gl_name->s_name);
	
	strcpy(canname,x->x_canvas->gl_name->s_name);
	cnamedir=dirname(canname);
	
	if (strcmp(cnamedir,".")) {
		sprintf(totaldir,"%s/%s",candir,cnamedir);
		fd=open_via_path(totaldir,instr ,"",buf, &bufptr, MAXPDSTRING, 1);
	}
	else 
		fd=open_via_path(candir, instr, "",buf, &bufptr, MAXPDSTRING, 1);

	if (fd>=0) {
		close(fd);
		buf[strlen(buf)]='/';
		outlet_symbol(x->x_obj.ob_outlet,gensym(buf));
	}
	return;
}


static void *absolutepath_new(t_float dolzero)
{
	t_absolutepath *x = (t_absolutepath *)pd_new(absolutepath_class);
	t_canvas *can=canvas_list;
	int d0;
	
	outlet_new(&x->x_obj, 0);
    x->x_canvas = canvas_getcurrent();
	x->x_dolzero = dolzero;
	x->x_realized=dolzero?0:1;

	return (void *)x;
}

void absolutepath_setup(void)
{
	absolutepath_class = class_new(gensym("absolutepath"),(t_newmethod)absolutepath_new,
		0, sizeof(t_absolutepath), 0,A_DEFFLOAT, 0);

	class_addsymbol(absolutepath_class, absolutepath_symbol);
}

#endif /* NOT _WIN32 */
