/usr/include/graphviz/graph.h is in libgraphviz-dev 2.26.3-10ubuntu1.2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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/* vim:set shiftwidth=4 ts=8: */
/**********************************************************
* This software is part of the graphviz package *
* http://www.graphviz.org/ *
* *
* Copyright (c) 1994-2004 AT&T Corp. *
* and is licensed under the *
* Common Public License, Version 1.0 *
* by AT&T Corp. *
* *
* Information and Software Systems Research *
* AT&T Research, Florham Park NJ *
**********************************************************/
#ifndef _GRAPH_H
#define _GRAPH_H 1
#if _PACKAGE_ast
#include <ast.h>
#else
#include <sys/types.h>
#include <stdlib.h>
#endif
#include <stdio.h>
#include "cdt.h"
#ifdef __cplusplus
extern "C" {
#endif
#define TAIL_ID "tailport"
#define HEAD_ID "headport"
typedef struct Agraph_t Agraph_t;
typedef struct Agnode_t Agnode_t;
typedef struct Agedge_t Agedge_t;
typedef struct Agdict_t Agdict_t;
typedef struct Agsym_t Agsym_t;
typedef struct Agdata_t Agdata_t;
typedef struct Agproto_t Agproto_t;
typedef char *(*gets_f) (char *ubuf, int n, FILE * fp);
#define AGFLAG_DIRECTED (1<<0)
#define AGFLAG_STRICT (1<<1)
#define AGFLAG_METAGRAPH (1<<2)
#define AGRAPH 0
#define AGRAPHSTRICT (AGRAPH | AGFLAG_STRICT)
#define AGDIGRAPH AGFLAG_DIRECTED
#define AGDIGRAPHSTRICT (AGDIGRAPH | AGFLAG_STRICT)
#define AGMETAGRAPH (AGFLAG_DIRECTED | AGFLAG_STRICT | AGFLAG_METAGRAPH)
#define AG_IS_DIRECTED(g) ((g)->kind & AGFLAG_DIRECTED)
#define AG_IS_STRICT(g) ((g)->kind & AGFLAG_STRICT)
#define AG_IS_METAGRAPH(g) ((g)->kind & AGFLAG_METAGRAPH)
#define aginit() aginitlib(sizeof(Agraph_t),sizeof(Agnode_t),sizeof(Agedge_t))
struct Agraph_t {
int tag:4;
int kind:4;
int handle:24;
char **attr;
char *didset;
char *name;
Agdata_t *univ;
Dict_t *nodes, *inedges, *outedges;
Agraph_t *root;
Agnode_t *meta_node;
Agproto_t *proto;
Agraphinfo_t u;
};
struct Agnode_t {
int tag:4;
int pad:4;
int handle:24;
char **attr;
char *didset;
char *name;
int id;
Agraph_t *graph;
Agnodeinfo_t u;
};
struct Agedge_t {
int tag:4;
int printkey:4;
int handle:24;
char **attr;
char *didset;
Agnode_t *head, *tail;
int id;
Agedgeinfo_t u;
};
struct Agdata_t { /* for main graph */
Dict_t *node_dict;
Agdict_t *nodeattr;
Agdict_t *edgeattr;
Agdict_t *globattr;
int max_node_id, max_edge_id;
};
struct Agsym_t {
char *name, *value;
int index;
unsigned char printed;
unsigned char fixed;
};
struct Agdict_t {
char *name;
Dict_t *dict;
Agsym_t **list;
};
struct Agproto_t {
Agnode_t *n;
Agedge_t *e;
Agproto_t *prev;
};
#if _PACKAGE_ast
_BEGIN_EXTERNS_ /* public data */
#if _BLD_graph && defined(__EXPORT__)
#define extern __EXPORT__
#endif
#if !_BLD_graph && defined(__IMPORT__) && 0
#define extern __IMPORT__
#endif
#endif
/*visual studio*/
#ifdef WIN32_DLL
#ifndef GRAPH_EXPORTS
#define extern __declspec(dllimport)
#endif
#endif
/*end visual studio*/
extern char *agstrcanon(char *, char *);
extern char *agcanonical(char *);
extern char *agcanon(char *);
extern int aghtmlstr(char *s);
extern char *agget(void *, char *);
extern char *agxget(void *, int);
extern int agset(void *, char *, char *);
extern int agsafeset(void *, char *, char *, char*);
extern int agxset(void *, int, char *);
extern int agindex(void *, char *);
extern void aginitlib(int, int, int);
extern Agraph_t *agopen(char *, int);
extern Agraph_t *agsubg(Agraph_t *, char *);
extern Agraph_t *agfindsubg(Agraph_t *, char *);
extern void agclose(Agraph_t *);
extern Agraph_t *agread(FILE *);
extern Agraph_t *agread_usergets(FILE *, gets_f);
extern void agreadline(int);
extern void agsetfile(char *);
extern Agraph_t *agmemread(char *);
extern void agsetiodisc(
char * (*myfgets) (char *s, int size, FILE *stream),
size_t (*myfwrite) (const void *ptr, size_t size, size_t nmemb, FILE *stream),
int (*myferror) (FILE *stream) );
extern int agputs(const char *s, FILE *fp);
extern int agputc(int c, FILE *fp);
extern int agwrite(Agraph_t *, FILE *);
extern int agerrors(void);
extern Agraph_t *agprotograph(void);
extern Agnode_t *agprotonode(Agraph_t *);
extern Agedge_t *agprotoedge(Agraph_t *);
extern Agraph_t *agusergraph(Agnode_t *);
extern int agnnodes(Agraph_t *);
extern int agnedges(Agraph_t *);
extern void aginsert(Agraph_t *, void *);
extern void agdelete(Agraph_t *, void *);
extern int agcontains(Agraph_t *, void *);
extern Agnode_t *agnode(Agraph_t *, char *);
extern Agnode_t *agfindnode(Agraph_t *, char *);
extern Agnode_t *agfstnode(Agraph_t *);
extern Agnode_t *agnxtnode(Agraph_t *, Agnode_t *);
extern Agnode_t *aglstnode(Agraph_t *);
extern Agnode_t *agprvnode(Agraph_t *, Agnode_t *);
extern Agedge_t *agedge(Agraph_t *, Agnode_t *, Agnode_t *);
extern Agedge_t *agfindedge(Agraph_t *, Agnode_t *, Agnode_t *);
extern Agedge_t *agfstedge(Agraph_t *, Agnode_t *);
extern Agedge_t *agnxtedge(Agraph_t *, Agedge_t *, Agnode_t *);
extern Agedge_t *agfstin(Agraph_t *, Agnode_t *);
extern Agedge_t *agnxtin(Agraph_t *, Agedge_t *);
extern Agedge_t *agfstout(Agraph_t *, Agnode_t *);
extern Agedge_t *agnxtout(Agraph_t *, Agedge_t *);
extern Agsym_t *agattr(void *, char *, char *);
extern Agsym_t *agraphattr(Agraph_t *, char *, char *);
extern Agsym_t *agnodeattr(Agraph_t *, char *, char *);
extern Agsym_t *agedgeattr(Agraph_t *, char *, char *);
extern Agsym_t *agfindattr(void *, char *);
extern Agsym_t *agfstattr(void *);
extern Agsym_t *agnxtattr(void *, Agsym_t *);
extern Agsym_t *aglstattr(void *);
extern Agsym_t *agprvattr(void *, Agsym_t *);
extern int agcopyattr(void *, void *);
typedef enum { AGWARN, AGERR, AGMAX, AGPREV } agerrlevel_t;
extern agerrlevel_t agerrno;
extern void agseterr(agerrlevel_t);
extern char *aglasterr(void);
extern int agerr(agerrlevel_t level, char *fmt, ...);
extern void agerrorf(const char *fmt, ...);
extern void agwarningf(char *fmt, ...);
extern char *agstrdup(char *);
extern char *agstrdup_html(char *s);
extern void agstrfree(char *);
typedef enum { AGNODE = 1, AGEDGE, AGGRAPH } agobjkind_t;
#define agobjkind(p) ((agobjkind_t)(((Agraph_t*)(p))->tag))
#define agmetanode(g) ((g)->meta_node)
#undef extern
#if _PACKAGE_ast
_END_EXTERNS_
#endif
#ifdef __cplusplus
}
#endif
#endif /* _GRAPH_H */
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