/* $Id: utils.h,v 1.41 2011/02/15 16:30:02 erg Exp $ $Revision: 1.41 $ */
/* vim:set shiftwidth=4 ts=8: */

/*************************************************************************
 * Copyright (c) 2011 AT&T Intellectual Property 
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors: See CVS logs. Details at http://www.graphviz.org/
 *************************************************************************/

#ifndef _UTILS_H
#define _UTILS_H 1

#ifdef __cplusplus
extern "C" {
#endif


#ifdef GVDLL
#define extern __declspec(dllexport)
#else
#define extern
#endif

/*visual studio*/
#ifdef WIN32_DLL
#ifndef GVC_EXPORTS
#define extern __declspec(dllimport)
#endif
#endif
/*end visual studio*/

#ifndef HAVE_STRCASECMP
    extern int strcasecmp(const char *s1, const char *s2);
#endif
#ifndef HAVE_STRNCASECMP
    extern int strncasecmp(const char *s1, const char *s2, size_t n);
#endif

    extern nodequeue *new_queue(int);
    extern void free_queue(nodequeue *);
    extern void enqueue(nodequeue *, Agnode_t *);
    extern Agnode_t *dequeue(nodequeue *);
    extern pointf Bezier(pointf *, int, double, pointf *, pointf *);
    extern void attach_attrs(graph_t * g);
    extern void attach_attrs_and_arrows(graph_t*, int*, int*);
    extern char *xml_string(char *str);
    extern void write_plain(GVJ_t * job, graph_t * g, FILE * f, boolean extend);
    extern void output_point(agxbuf *xbuf, pointf p);
    extern char *ps_string(char *s, int);
    extern char *strdup_and_subst_obj(char *str, void *obj);
    extern char *xml_url_string(char *s);
    extern void epsf_emit_body(GVJ_t *job, usershape_t *us);
    extern void epsf_define(GVJ_t * job);
    extern void undoClusterEdges(graph_t * g);
#ifndef WITH_CGRAPH
    extern attrsym_t* safe_dcl(graph_t*, void*, char*, char*,
             attrsym_t * (*fun) (Agraph_t *, char *, char *));
#else
    extern attrsym_t* safe_dcl(graph_t * g, int obj_kind, char *name, char *def);
#endif

    extern int late_int(void *, Agsym_t *, int, int);
    extern double late_double(void *, Agsym_t *, double, double);
    extern char *late_nnstring(void *, Agsym_t *, char *);
    extern char *late_string(void *, Agsym_t *, char *);
	extern boolean late_bool(void *, Agsym_t *, int);

    extern Agnode_t *UF_find(Agnode_t *);
    extern Agnode_t *UF_union(Agnode_t *, Agnode_t *);
    extern void UF_remove(Agnode_t *, Agnode_t *);
    extern void UF_singleton(Agnode_t *);
    extern void UF_setname(Agnode_t *, Agnode_t *);

    extern char *Fgets(FILE * fp);
    extern const char *safefile(const char *filename);

    extern boolean mapBool(char *, boolean);
    extern boolean mapbool(char *);
    extern int maptoken(char *, char **, int *);

    extern int test_toggle(void);

    extern void common_init_node(node_t * n);
    extern int common_init_edge(edge_t * e);

    extern void updateBB(graph_t * g, textlabel_t * lp);
    extern void compute_bb(Agraph_t *);
    extern boolean overlap_node(node_t *n, boxf b);
    extern boolean overlap_label(textlabel_t *lp, boxf b);
    extern boolean overlap_edge(edge_t *e, boxf b);

    extern int processClusterEdges(graph_t * g);

    extern char *latin1ToUTF8(char *);
    extern char *htmlEntityUTF8(char *);
    extern char* utf8ToLatin1 (char* ins);
    extern char* scanEntity (char* t, agxbuf* xb);

    extern pointf dotneato_closest(splines * spl, pointf p);
    extern pointf neato_closest(splines * spl, pointf p);
    extern pointf spline_at_y(splines * spl, double y);

    extern Agsym_t *setAttr(graph_t*, void*, char*name, char *value, Agsym_t*);
    extern void setEdgeType (graph_t* g, int dflt);
    extern int edgeType (char* s, int dflt);
    extern int is_a_cluster (Agraph_t* g);

    /* from postproc.c */ 
    extern void gv_nodesize(Agnode_t * n, boolean flip);

    /* from timing.c */
    extern void start_timer(void);
    extern double elapsed_sec(void);

    /* from psusershape.c */
    extern void cat_libfile(GVJ_t * job, const char **arglib, const char **stdlib);

    /**/
#ifdef WIN32	
	extern void fix_fc(void);
#endif

#undef extern

#ifdef __cplusplus
}
#endif

#endif /* _UTILS_H */