Graphviz: lib/pack/ccomps.c File Reference

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#include <cgraph/cgraph.h>
#include <common/render.h>
#include <common/utils.h>
#include <limits.h>
#include <pack/pack.h>
#include <stdbool.h>
#include <stdlib.h>
#include <util/agxbuf.h>
#include <util/alloc.h>
#include <util/gv_ctype.h>
#include <util/list.h>
#include <util/prisize_t.h>

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Data Structures
struct	ccgraphinfo_t

struct	ccgnodeinfo_t

struct	orig_t

Macros
#define	GRECNAME "ccgraphinfo"

#define	NRECNAME "ccgnodeinfo"

#define	GD_cc_subg(g) (((ccgraphinfo_t *)aggetrec(g, GRECNAME, 0))->cc_subg)

#define	dnodeOf(v) (((ccgnodeinfo_t *)aggetrec(v, NRECNAME, 0))->ptr.n)

#define	dnodeSet(v, w) (((ccgnodeinfo_t *)aggetrec(v, NRECNAME, 0))->ptr.n = w)

#define	ptrOf(np) (((ccgnodeinfo_t *)((np)->base.data))->ptr.v)

#define	nodeOf(np) (((ccgnodeinfo_t *)((np)->base.data))->ptr.n)

#define	clustOf(np) (((ccgnodeinfo_t *)((np)->base.data))->ptr.g)

#define	clMark(n) (((ccgnodeinfo_t *)(n->base.data))->mark)

#define	ORIG_REC "orig"

Functions
typedef	LIST (Agnode_t *)

static bool	marked (const stk_t stk, Agnode_t n)
	does `n` have a mark set?

static void	mark (const stk_t stk, Agnode_t n)
	set a mark on `n`

static void	unmark (const stk_t stk, Agnode_t n)
	unset a mark on `n`

static stk_t	initStk (void(actionfn)(Agnode_t , void ), bool(markfn)(Agnode_t *, int))

static void	freeStk (stk_t *sp)

static void	push (stk_t sp, Agnode_t np)

static Agnode_t *	pop (stk_t *sp)

static size_t	dfs (Agraph_t g, Agnode_t n, void state, stk_t stk)

static bool	isLegal (const char *p)

static void	insertFn (Agnode_t n, void state)

static bool	markFn (Agnode_t *n, int v)

static void	setPrefix (agxbuf xb, const char pfx)

Agraph_t **	pccomps (Agraph_t g, size_t ncc, char pfx, bool pinned)

Agraph_t **	ccomps (Agraph_t g, size_t ncc, char *pfx)

static void	deriveClusters (Agraph_t dg, Agraph_t g)

static Agraph_t *	deriveGraph (Agraph_t *g)

static void	unionNodes (Agraph_t dg, Agraph_t g)

static bool	clMarkFn (Agnode_t *n, int v)

Agraph_t *	mapClust (Agraph_t *cl)

static Agraph_t *	projectG (Agraph_t subg, Agraph_t g, int inCluster)

static void	subgInduce (Agraph_t root, Agraph_t g, int inCluster)

static void	subGInduce (Agraph_t g, Agraph_t out)

Agraph_t **	cccomps (Agraph_t g, size_t ncc, char *pfx)

int	isConnected (Agraph_t *g)

Variables
	stk_t

Macro Definition Documentation

◆ clMark

#define clMark ( n ) (((ccgnodeinfo_t *)(n->base.data))->mark)

Definition at line 253 of file ccomps.c.

◆ clustOf

#define clustOf ( np ) (((ccgnodeinfo_t *)((np)->base.data))->ptr.g)

Definition at line 252 of file ccomps.c.

◆ dnodeOf

#define dnodeOf ( v ) (((ccgnodeinfo_t *)aggetrec(v, NRECNAME, 0))->ptr.n)

Definition at line 246 of file ccomps.c.

◆ dnodeSet

#define dnodeSet	(	v,
		w
	)	(((ccgnodeinfo_t *)aggetrec(v, NRECNAME, 0))->ptr.n = w)

Definition at line 247 of file ccomps.c.

◆ GD_cc_subg

#define GD_cc_subg ( g ) (((ccgraphinfo_t *)aggetrec(g, GRECNAME, 0))->cc_subg)

Definition at line 233 of file ccomps.c.

◆ GRECNAME

#define GRECNAME "ccgraphinfo"

Definition at line 231 of file ccomps.c.

◆ nodeOf

#define nodeOf ( np ) (((ccgnodeinfo_t *)((np)->base.data))->ptr.n)

Definition at line 251 of file ccomps.c.

◆ NRECNAME

#define NRECNAME "ccgnodeinfo"

Definition at line 232 of file ccomps.c.

◆ ORIG_REC

#define ORIG_REC "orig"

Definition at line 360 of file ccomps.c.

◆ ptrOf

#define ptrOf ( np ) (((ccgnodeinfo_t *)((np)->base.data))->ptr.v)

Definition at line 250 of file ccomps.c.

Function Documentation

◆ cccomps()

Agraph_t ** cccomps	(	Agraph_t *	g,
		size_t *	ncc,
		char *	pfx
	)

Definition at line 435 of file ccomps.c.

References agbindrec(), agclean(), agclose(), agdelete(), agfstnode(), aginit(), agnameof(), agnedges(), agnnodes(), AGNODE, agnxtnode(), AGRAPH, agsubg(), agxbfree(), agxbprint(), agxbuse(), clMarkFn(), deriveGraph(), dfs(), freeStk(), GD_cc_subg, graphviz_node_induce(), GRECNAME, initStk(), insertFn(), LIST, LIST_APPEND, LIST_DETACH, LIST_RESERVE, LIST_SIZE, marked(), NRECNAME, NULL, out(), PRISIZE_T, setPrefix(), stk_t, subGInduce(), unionNodes(), and Verbose.

Referenced by doDot().

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◆ ccomps()

Agraph_t ** ccomps	(	Agraph_t *	g,
		size_t *	ncc,
		char *	pfx
	)

Definition at line 183 of file ccomps.c.

References agbindrec(), agfstnode(), agnnodes(), agnxtnode(), agsubg(), agxbfree(), agxbprint(), agxbuse(), dfs(), freeStk(), initStk(), insertFn(), LIST, LIST_APPEND, LIST_DETACH, LIST_SIZE, marked(), markFn(), NULL, out(), PRISIZE_T, setPrefix(), stk_t, and unmark().

Referenced by circomps(), main(), sfdp_layout(), and twopi_layout().

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◆ clMarkFn()

static bool clMarkFn	(	Agnode_t *	n,
		int	v
	)

static

Definition at line 346 of file ccomps.c.

References clMark.

Referenced by cccomps().

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◆ deriveClusters()

static void deriveClusters	(	Agraph_t *	dg,
		Agraph_t *	g
	)

static

Definition at line 260 of file ccomps.c.

References agbindrec(), agfstnode(), agfstsubg(), agnameof(), agnode(), agnxtnode(), agnxtsubg(), clustOf, deriveClusters(), dnodeOf, dnodeSet, is_a_cluster(), and NRECNAME.

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◆ deriveGraph()

static Agraph_t * deriveGraph ( Agraph_t * g )

static

Definition at line 290 of file ccomps.c.

References agbindrec(), agedge(), agfstnode(), agfstout(), aghead, agnameof(), agnode(), agnxtnode(), agnxtout(), agopen(), Agstrictundirected, deriveClusters(), dnodeOf, dnodeSet, nodeOf, NRECNAME, and NULL.

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◆ dfs()

static size_t dfs	(	Agraph_t *	g,
		Agnode_t *	n,
		void *	state,
		stk_t *	stk
	)

static

Definition at line 61 of file ccomps.c.

References agfstedge(), aghead, agnxtedge(), agtail, cnt(), marked(), pop(), and push().

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◆ freeStk()

static void freeStk ( stk_t * sp )

static

Definition at line 46 of file ccomps.c.

References LIST_FREE.

Referenced by cccomps(), ccomps(), isConnected(), and pccomps().

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◆ initStk()

static stk_t initStk	(	void()(Agnode_t , void *)	actionfn,
		bool()(Agnode_t , int)	markfn
	)

static

Definition at line 41 of file ccomps.c.

References stk_t.

Referenced by cccomps(), ccomps(), isConnected(), and pccomps().

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◆ insertFn()

static void insertFn	(	Agnode_t *	n,
		void *	state
	)

static

Definition at line 92 of file ccomps.c.

References agsubnode().

Referenced by cccomps(), ccomps(), and pccomps().

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◆ isConnected()

int isConnected ( Agraph_t * g )

Definition at line 504 of file ccomps.c.

References agfstnode(), agnnodes(), agnxtnode(), cnt(), dfs(), freeStk(), initStk(), markFn(), NULL, stk_t, and unmark().

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◆ isLegal()

static bool isLegal ( const char * p )

static

Definition at line 81 of file ccomps.c.

References gv_isalnum().

Referenced by setPrefix().

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◆ LIST()

typedef LIST ( Agnode_t * )

Definition at line 24 of file ccomps.c.

◆ mapClust()

Agraph_t * mapClust ( Agraph_t * cl )

Definition at line 362 of file ccomps.c.

References aggetrec(), orig_t::orig, and ORIG_REC.

Referenced by copyCluster(), and copyClusterInfo().

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◆ mark()

static void mark	(	const stk_t *	stk,
		Agnode_t *	n
	)

static

Definition at line 36 of file ccomps.c.

Referenced by find_pair_edges(), marktripath(), and push().

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◆ marked()

static bool marked	(	const stk_t *	stk,
		Agnode_t *	n
	)

static

Definition at line 33 of file ccomps.c.

Referenced by cccomps(), ccomps(), dfs(), and pccomps().

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◆ markFn()

static bool markFn	(	Agnode_t *	n,
		int	v
	)

static

Definition at line 94 of file ccomps.c.

References ND_mark.

Referenced by ccomps(), isConnected(), and pccomps().

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◆ pccomps()

Agraph_t ** pccomps	(	Agraph_t *	g,
		size_t *	ncc,
		char *	pfx,
		bool *	pinned
	)

Definition at line 121 of file ccomps.c.

References agbindrec(), agfstnode(), agnnodes(), agnxtnode(), agsubg(), agxbfree(), agxbprint(), agxbuse(), dfs(), freeStk(), initStk(), insertFn(), isPinned, LIST, LIST_APPEND, LIST_DETACH, LIST_SIZE, marked(), markFn(), NULL, out(), PRISIZE_T, setPrefix(), stk_t, and unmark().

Referenced by neato_layout().

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◆ pop()

static Agnode_t * pop ( stk_t * sp )

static

Definition at line 53 of file ccomps.c.

References LIST_IS_EMPTY, LIST_POP_BACK, and NULL.

◆ projectG()

static Agraph_t * projectG	(	Agraph_t *	subg,
		Agraph_t *	g,
		int	inCluster
	)

static

Definition at line 376 of file ccomps.c.

References agbindrec(), agcopyattr(), agfindnode, agfstnode(), agnameof(), agnxtnode(), agsubg(), agsubnode(), graphviz_node_induce(), is_a_cluster(), NULL, orig_t::orig, and ORIG_REC.

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◆ push()

static void push	(	stk_t *	sp,
		Agnode_t *	np
	)

static

Definition at line 48 of file ccomps.c.

References LIST_PUSH_BACK, and mark().

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◆ setPrefix()

static void setPrefix	(	agxbuf *	xb,
		const char *	pfx
	)

static

Definition at line 102 of file ccomps.c.

References agxbput(), and isLegal().

Referenced by cccomps(), ccomps(), and pccomps().

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◆ subGInduce()

static void subGInduce	(	Agraph_t *	g,
		Agraph_t *	out
	)

static

Definition at line 424 of file ccomps.c.

References out(), and subgInduce().

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◆ subgInduce()

static void subgInduce	(	Agraph_t *	root,
		Agraph_t *	g,
		int	inCluster
	)

static

Definition at line 409 of file ccomps.c.

References agfstsubg(), agnxtsubg(), GD_cc_subg, is_a_cluster(), projectG(), and subgInduce().

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◆ unionNodes()

static void unionNodes	(	Agraph_t *	dg,
		Agraph_t *	g
	)

static

Definition at line 330 of file ccomps.c.

References agfstnode(), AGNODE, agnxtnode(), agsubnode(), AGTYPE, clustOf, nodeOf, and ptrOf.

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◆ unmark()

static void unmark	(	const stk_t *	stk,
		Agnode_t *	n
	)

static

Definition at line 39 of file ccomps.c.

Referenced by ccomps(), isConnected(), and pccomps().

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Variable Documentation

◆ stk_t

stk_t

Definition at line 30 of file ccomps.c.

Referenced by cccomps(), ccomps(), initStk(), isConnected(), and pccomps().

Data Structures

Macros

Functions

Variables

Macro Definition Documentation

◆ clMark

◆ clustOf

◆ dnodeOf

◆ dnodeSet

◆ GD_cc_subg

◆ GRECNAME

◆ nodeOf

◆ NRECNAME

◆ ORIG_REC

◆ ptrOf

Function Documentation

◆ cccomps()

◆ ccomps()

◆ clMarkFn()

◆ deriveClusters()

◆ deriveGraph()

◆ dfs()

◆ freeStk()

◆ initStk()

◆ insertFn()

◆ isConnected()

◆ isLegal()

◆ LIST()

◆ mapClust()

◆ mark()

◆ marked()

◆ markFn()

◆ pccomps()

◆ pop()

◆ projectG()

◆ push()

◆ setPrefix()

◆ subGInduce()

◆ subgInduce()

◆ unionNodes()

◆ unmark()

Variable Documentation

◆ stk_t