Graphviz: lib/cgraph/attr.c File Reference

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implementation of dynamic attributes More...

#include <cgraph/cghdr.h>
#include <stdbool.h>
#include <stdlib.h>
#include <util/alloc.h>
#include <util/streq.h>
#include <util/unreachable.h>

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Macros
#define	MINATTR 4 /* minimum allocation */

Functions
static void	freesym (void *obj)

static void	init_all_attrs (Agraph_t *g)

Agdatadict_t *	agdatadict (Agraph_t *g, bool cflag)

static Dict_t *	agdictof (Agraph_t *g, int kind)

static Agsym_t *	agnewsym (Agraph_t g, const char name, const char *value, bool is_html, int id, int kind)

static void	agcopydict (Dict_t src, Dict_t dest, Agraph_t *g, int kind)

static Agdatadict_t *	agmakedatadict (Agraph_t *g)

static Agsym_t *	agdictsym (Dict_t dict, char name)

static Agsym_t *	aglocaldictsym (Dict_t dict, char name)

Agsym_t *	agattrsym (void obj, char name)
	looks up a string attribute for a graph object given as an argument

static int	topdictsize (Agobj_t *obj)

static Agrec_t *	agmakeattrs (Agraph_t context, void obj)

static void	freeattr (Agobj_t obj, Agattr_t attr)

Agattr_t *	agattrrec (void *obj)

static void	addattr (Agraph_t g, Agobj_t obj, Agsym_t *sym)

static Agsym_t *	getattr (Agraph_t g, int kind, char name)

static void	unviewsubgraphsattr (Agraph_t parent, char name)

static int	agxset_ (void obj, Agsym_t sym, const char *value, bool is_html)

static Agsym_t *	setattr (Agraph_t g, int kind, char name, const char *value, bool is_html)

static Agsym_t *	agattr_ (Agraph_t g, int kind, char name, const char *value, bool is_html)

Agsym_t *	agattr (Agraph_t g, int kind, char name, const char *value)
	creates or looks up attributes of a graph

Agsym_t *	agattr_html (Agraph_t g, int kind, char name, const char *value)
	`agattr`, but creates HTML-like values

Agsym_t *	agnxtattr (Agraph_t g, int kind, Agsym_t attr)
	permits traversing the list of attributes of a given type

void	agraphattr_init (Agraph_t *g)

int	agraphattr_delete (Agraph_t *g)

void	agnodeattr_init (Agraph_t g, Agnode_t n)

void	agnodeattr_delete (Agnode_t *n)

void	agedgeattr_init (Agraph_t g, Agedge_t e)

void	agedgeattr_delete (Agedge_t *e)

char *	agget (void obj, char name)

char *	agxget (void obj, Agsym_t sym)

int	agset (void obj, char name, const char *value)

int	agxset (void obj, Agsym_t sym, const char *value)

int	agxset_html (void obj, Agsym_t sym, const char *value)

int	agsafeset (void obj, char name, const char value, const char def)
	ensures the given attribute is declared before setting it locally on an object

static void	agraphattr_init_wrapper (Agraph_t g, Agobj_t ignored1, void *ignored2)

int	agcopyattr (void oldobj, void newobj)
	copies all of the attributes from one object to another

Variables
Dtdisc_t	AgDataDictDisc

static char	DataDictName [] = "_AG_datadict"

static Agdesc_t	ProtoDesc

static Agraph_t *	ProtoGraph

char *	AgDataRecName = "_AG_strdata"

Macro Definition Documentation

◆ MINATTR

#define MINATTR 4 /* minimum allocation */

Definition at line 30 of file attr.c.

Function Documentation

◆ addattr()

static void addattr	(	Agraph_t *	g,
		Agobj_t *	obj,
		Agsym_t *	sym
	)

static

Definition at line 242 of file attr.c.

References agattrrec(), aghtmlstr(), agstrdup(), agstrdup_html(), Agsym_s::defval, gv_recalloc(), Agsym_s::id, MINATTR, NULL, and Agattr_s::str.

Referenced by setattr().

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◆ agattr_()

static Agsym_t * agattr_	(	Agraph_t *	g,
		int	kind,
		char *	name,
		const char *	value,
		bool	is_html
	)

static

Definition at line 355 of file attr.c.

References agopen(), getattr(), ProtoDesc, ProtoGraph, and setattr().

Referenced by agattr(), and agattr_html().

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◆ agcopydict()

static void agcopydict	(	Dict_t *	src,
		Dict_t *	dest,
		Agraph_t *	g,
		int	kind
	)

static

Definition at line 96 of file attr.c.

References aghtmlstr(), agnewsym(), Agsym_s::defval, dtfirst, dtinsert, dtnext, dtsize(), Agsym_s::fixed, Agsym_s::id, Agsym_s::name, and Agsym_s::print.

Referenced by agmakedatadict().

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◆ agdictof()

static Dict_t * agdictof	(	Agraph_t *	g,
		int	kind
	)

static

Definition at line 58 of file attr.c.

References agdatadict(), agerrorf(), AGINEDGE, AGNODE, AGOUTEDGE, AGRAPH, Agdatadict_s::dict, Agdatadict_s::e, Agdatadict_s::g, Agdatadict_s::n, and NULL.

Referenced by agmakeattrs(), agnxtattr(), getattr(), setattr(), and topdictsize().

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◆ agdictsym()

static Agsym_t * agdictsym	(	Dict_t *	dict,
		char *	name
	)

static

Definition at line 139 of file attr.c.

References dtsearch, and Agsym_s::name.

Referenced by agattrsym(), aglocaldictsym(), getattr(), and setattr().

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◆ aglocaldictsym()

static Agsym_t * aglocaldictsym	(	Dict_t *	dict,
		char *	name
	)

static

Definition at line 147 of file attr.c.

References agdictsym(), dtview(), NULL, and view.

Referenced by agxset_(), setattr(), and unviewsubgraphsattr().

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◆ agmakeattrs()

static Agrec_t * agmakeattrs	(	Agraph_t *	context,
		void *	obj
	)

static

Definition at line 184 of file attr.c.

References agbindrec(), AgDataRecName, agdictof(), aghtmlstr(), agraphof(), agroot(), agstrdup(), agstrdup_html(), AGTYPE, Agsym_s::defval, Agattr_s::dict, dtfirst, dtnext, gv_calloc(), Agsym_s::id, MINATTR, NULL, Agattr_s::str, and topdictsize().

Referenced by agedgeattr_init(), agnodeattr_init(), and agraphattr_init().

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◆ agmakedatadict()

static Agdatadict_t * agmakedatadict ( Agraph_t * g )

static

Definition at line 110 of file attr.c.

References agbindrec(), agcopydict(), agdatadict(), AgDataDictDisc, agdtopen(), AGEDGE, AGNODE, agparent(), AGRAPH, DataDictName, Agdatadict_s::dict, Dttree, dtview(), Agdatadict_s::e, Agdatadict_s::g, Agdatadict_s::n, and ProtoGraph.

Referenced by agraphattr_init().

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◆ agnewsym()

static Agsym_t * agnewsym	(	Agraph_t *	g,
		const char *	name,
		const char *	value,
		bool	is_html,
		int	id,
		int	kind
	)

static

Parameters

is_html Is value an HTML-like string?

Definition at line 86 of file attr.c.

References agstrdup(), agstrdup_html(), Agsym_s::defval, gv_alloc(), id, Agsym_s::id, Agsym_s::kind, and Agsym_s::name.

Referenced by agcopydict(), agxset_(), setattr(), and unviewsubgraphsattr().

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◆ agraphattr_init_wrapper()

static void agraphattr_init_wrapper	(	Agraph_t *	g,
		Agobj_t *	ignored1,
		void *	ignored2
	)

static

Definition at line 549 of file attr.c.

References agraphattr_init().

Referenced by init_all_attrs().

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◆ agxset_()

static int agxset_	(	void *	obj,
		Agsym_t *	sym,
		const char *	value,
		bool	is_html
	)

static

Definition at line 504 of file attr.c.

References agattrrec(), agdatadict(), aghtmlstr(), aglocaldictsym(), agmethod_upd(), agnewsym(), AGRAPH, agraphof(), agstrdup(), agstrdup_html(), agstrfree(), AGTYPE, Agsym_s::defval, Agdatadict_s::dict, dtinsert, Agdatadict_s::g, Agsym_s::id, Agsym_s::name, Agtag_s::objtype, SUCCESS, Agobj_s::tag, and topdictsize().

Referenced by agxset(), agxset_html(), and setattr().

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◆ freeattr()

static void freeattr	(	Agobj_t *	obj,
		Agattr_t *	attr
	)

static

Definition at line 215 of file attr.c.

References aghtmlstr(), agraphof(), agstrfree(), free(), Agattr_s::str, and topdictsize().

Referenced by agedgeattr_delete(), agnodeattr_delete(), and agraphattr_delete().

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◆ freesym()

static void freesym ( void * obj )

static

Definition at line 227 of file attr.c.

References Ag_G_global, aghtmlstr(), agstrfree(), Agsym_s::defval, free(), and Agsym_s::name.

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◆ getattr()

static Agsym_t * getattr	(	Agraph_t *	g,
		int	kind,
		char *	name
	)

static

Definition at line 256 of file attr.c.

References agdictof(), and agdictsym().

Referenced by agattr_(), and unviewsubgraphsattr().

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◆ init_all_attrs()

static void init_all_attrs ( Agraph_t * g )

static

Definition at line 562 of file attr.c.

References agapply(), agedgeattr_init(), agfstnode(), agfstout(), agnodeattr_init(), agnxtnode(), agnxtout(), agraphattr_init_wrapper(), agroot(), and NULL.

Referenced by agdatadict().

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◆ setattr()

static Agsym_t * setattr	(	Agraph_t *	g,
		int	kind,
		char *	name,
		const char *	value,
		bool	is_html
	)

static

Parameters

is_html Is value an HTML-like string?

Definition at line 291 of file attr.c.

References addattr(), agapply(), agdatadict(), agdictof(), agdictsym(), agfstnode(), agfstout(), aghtmlstr(), AGINEDGE, aglocaldictsym(), agmethod_upd(), agnewsym(), AGNODE, agnxtnode(), agnxtout(), AGOUTEDGE, AGRAPH, agroot(), agstrdup(), agstrdup_html(), agstrfree(), agwarningf(), agxset_(), Agsym_s::defval, dtinsert, dtsize(), Agsym_s::id, streq(), UNREACHABLE, and unviewsubgraphsattr().

Referenced by agattr_().

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◆ topdictsize()

static int topdictsize ( Agobj_t * obj )

static

Definition at line 175 of file attr.c.

References agdictof(), agraphof(), agroot(), AGTYPE, and dtsize().

Referenced by agmakeattrs(), agxget(), agxset_(), and freeattr().

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◆ unviewsubgraphsattr()

static void unviewsubgraphsattr	(	Agraph_t *	parent,
		char *	name
	)

static

Definition at line 266 of file attr.c.

References agdatadict(), agfstsubg(), aghtmlstr(), aglocaldictsym(), agnewsym(), agnxtsubg(), AGRAPH, agroot(), agxget(), Agdatadict_s::dict, dtinsert, Agdatadict_s::g, getattr(), Agsym_s::id, and parent.

Referenced by setattr().

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Variable Documentation

◆ AgDataDictDisc

Dtdisc_t AgDataDictDisc

Initial value:

= {
    (int) offsetof(Agsym_t, name),      
    -1,
    (int) offsetof(Agsym_t, link),
    NULL,
    freesym,
    NULL,
}

Definition at line 34 of file attr.c.

Referenced by agmakedatadict().

◆ AgDataRecName

char* AgDataRecName = "_AG_strdata"

Definition at line 173 of file attr.c.

Referenced by agattrrec(), agedgeattr_delete(), agmakeattrs(), agnodeattr_delete(), newedge(), and newnode().

◆ DataDictName

char DataDictName[] = "_AG_datadict"

static

Definition at line 43 of file attr.c.

Referenced by agdatadict(), and agmakedatadict().

◆ ProtoDesc

Agdesc_t ProtoDesc

static

Initial value:

= {.directed = true, .no_loop = true,

.no_write = true}

Definition at line 45 of file attr.c.

Referenced by agattr_().

◆ ProtoGraph

Agraph_t* ProtoGraph

static

Definition at line 47 of file attr.c.

Referenced by agattr_(), and agmakedatadict().

Macros

Functions

Variables

Macro Definition Documentation

◆ MINATTR

Function Documentation

◆ addattr()

◆ agattr_()

◆ agcopydict()

◆ agdictof()

◆ agdictsym()

◆ aglocaldictsym()

◆ agmakeattrs()

◆ agmakedatadict()

◆ agnewsym()

◆ agraphattr_init_wrapper()

◆ agxset_()

◆ freeattr()

◆ freesym()

◆ getattr()

◆ init_all_attrs()

◆ setattr()

◆ topdictsize()

◆ unviewsubgraphsattr()

Variable Documentation

◆ AgDataDictDisc

◆ AgDataRecName

◆ DataDictName

◆ ProtoDesc

◆ ProtoGraph