Graphviz: lib/gvc/gvusershape.c File Reference

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#include "config.h"
#include <assert.h>
#include <common/globals.h>
#include <common/render.h>
#include <common/types.h>
#include <common/usershape.h>
#include <common/utils.h>
#include <errno.h>
#include <gvc/gvcint.h>
#include <gvc/gvcproc.h>
#include <gvc/gvplugin.h>
#include <gvc/gvplugin_loadimage.h>
#include <limits.h>
#include <math.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <util/agxbuf.h>
#include <util/alloc.h>
#include <util/gv_ctype.h>
#include <util/gv_fopen.h>
#include <util/optional.h>
#include <util/streq.h>
#include <util/strview.h>

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Data Structures
struct	knowntype_t

struct	match_t

struct	stream_t

Macros
#define	HDRLEN 20

#define	PNG_MAGIC "\x89PNG\x0D\x0A\x1A\x0A"

#define	PS_MAGIC "%!PS-Adobe-"

#define	BMP_MAGIC "BM"

#define	GIF_MAGIC "GIF8"

#define	JPEG_MAGIC "\xFF\xD8\xFF"

#define	PDF_MAGIC "%PDF-"

#define	EPS_MAGIC "\xC5\xD0\xD3\xC6"

#define	XML_MAGIC "<?xml"

#define	SVG_MAGIC "<svg"

#define	RIFF_MAGIC "RIFF"

#define	WEBP_MAGIC "WEBP"

#define	ICO_MAGIC "\x00\x00\x01\x00"

#define	MAX_USERSHAPE_FILES_OPEN 50

Functions
static imagetype_t	imagetype (usershape_t *us)

static bool	get_int_lsb_first (FILE f, size_t sz, int val)

static bool	get_int_msb_first (FILE f, size_t sz, int val)

static double	svg_units_convert (double n, char *u)

static int	find_attribute (const char s, match_t result)

static void	svg_size (usershape_t *us)

static void	png_size (usershape_t *us)

static void	ico_size (usershape_t *us)

static void	webp_size (usershape_t *us)

static void	gif_size (usershape_t *us)

static void	bmp_size (usershape_t *us)

static void	jpeg_size (usershape_t *us)

static void	ps_size (usershape_t *us)

static void	skipWS (stream_t *str)

static int	scanNum (char tok, double dp)

static char *	getNum (stream_t *str)

static int	boxof (stream_t str, boxf bp)

static bool	fstr (FILE f, const char needle)

static int	bboxPDF (FILE fp, boxf bp)

static void	pdf_size (usershape_t *us)

static void	usershape_close (void *p)

usershape_t *	gvusershape_find (const char *name)

bool	gvusershape_file_access (usershape_t *us)

void	gvusershape_file_release (usershape_t *us)

static void	freeUsershape (usershape_t *us)

static usershape_t *	gvusershape_open (const char *name)

point	gvusershape_size_dpi (usershape_t *us, pointf dpi)

point	gvusershape_size (graph_t g, char name)

Variables
static Dict_t *	ImageDict

static knowntype_t	knowntypes []

static Dtdisc_t	ImageDictDisc

Macro Definition Documentation

◆ BMP_MAGIC

#define BMP_MAGIC "BM"

Definition at line 50 of file gvusershape.c.

◆ EPS_MAGIC

#define EPS_MAGIC "\xC5\xD0\xD3\xC6"

Definition at line 54 of file gvusershape.c.

◆ GIF_MAGIC

#define GIF_MAGIC "GIF8"

Definition at line 51 of file gvusershape.c.

◆ HDRLEN

#define HDRLEN 20

Definition at line 46 of file gvusershape.c.

◆ ICO_MAGIC

#define ICO_MAGIC "\x00\x00\x01\x00"

Definition at line 59 of file gvusershape.c.

◆ JPEG_MAGIC

#define JPEG_MAGIC "\xFF\xD8\xFF"

Definition at line 52 of file gvusershape.c.

◆ MAX_USERSHAPE_FILES_OPEN

#define MAX_USERSHAPE_FILES_OPEN 50

Definition at line 682 of file gvusershape.c.

◆ PDF_MAGIC

#define PDF_MAGIC "%PDF-"

Definition at line 53 of file gvusershape.c.

◆ PNG_MAGIC

#define PNG_MAGIC "\x89PNG\x0D\x0A\x1A\x0A"

Definition at line 48 of file gvusershape.c.

◆ PS_MAGIC

#define PS_MAGIC "%!PS-Adobe-"

Definition at line 49 of file gvusershape.c.

◆ RIFF_MAGIC

#define RIFF_MAGIC "RIFF"

Definition at line 57 of file gvusershape.c.

◆ SVG_MAGIC

#define SVG_MAGIC "<svg"

Definition at line 56 of file gvusershape.c.

◆ WEBP_MAGIC

#define WEBP_MAGIC "WEBP"

Definition at line 58 of file gvusershape.c.

◆ XML_MAGIC

#define XML_MAGIC "<?xml"

Definition at line 55 of file gvusershape.c.

Function Documentation

◆ bboxPDF()

static int bboxPDF	(	FILE *	fp,
		boxf *	bp
	)

static

Definition at line 631 of file gvusershape.c.

References agxbfree(), boxof(), stream_t::fp, fstr(), and str.

Referenced by pdf_size().

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◆ bmp_size()

static void bmp_size ( usershape_t * us )

static

Definition at line 405 of file gvusershape.c.

References usershape_s::dpi, usershape_s::f, get_int_lsb_first(), usershape_s::h, and usershape_s::w.

Referenced by gvusershape_open().

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◆ boxof()

static int boxof	(	stream_t *	str,
		boxf *	bp
	)

static

Definition at line 571 of file gvusershape.c.

References getNum(), boxf::LL, scanNum(), skipWS(), str, tok(), boxf::UR, pointf_s::x, and pointf_s::y.

Referenced by bboxPDF().

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◆ find_attribute()

static int find_attribute	(	const char *	s,
		match_t *	result
	)

static

Definition at line 232 of file gvusershape.c.

References strview_t::data, gv_isalpha(), gv_islower(), match_t::key, strview_t::size, and match_t::value.

Referenced by svg_size().

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◆ freeUsershape()

static void freeUsershape ( usershape_t * us )

static

Definition at line 721 of file gvusershape.c.

References agstrfree(), free(), and usershape_s::name.

Referenced by gvusershape_open().

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◆ fstr()

static bool fstr	(	FILE *	f,
		const char *	needle
	)

static

scan a file until a string is found

This is essentially strstr, but taking a FILE * as the haystack instead of a char *. Note that the position of f will be immediately after the given string if this function returns true.

Parameters

f	File to seek
needle	Substring to look for

Returns: True if the substring was found

Definition at line 599 of file gvusershape.c.

References NULL.

Referenced by bboxPDF().

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◆ get_int_lsb_first()

static bool get_int_lsb_first	(	FILE *	f,
		size_t	sz,
		int *	val
	)

static

Definition at line 179 of file gvusershape.c.

Referenced by bmp_size(), gif_size(), and webp_size().

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◆ get_int_msb_first()

static bool get_int_msb_first	(	FILE *	f,
		size_t	sz,
		int *	val
	)

static

Definition at line 194 of file gvusershape.c.

Referenced by ico_size(), jpeg_size(), and png_size().

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◆ getNum()

static char * getNum ( stream_t * str )

static

Definition at line 555 of file gvusershape.c.

References agxbputc(), agxbuse(), gv_isdigit(), skipWS(), and str.

Referenced by boxof().

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◆ gif_size()

static void gif_size ( usershape_t * us )

static

Definition at line 394 of file gvusershape.c.

References usershape_s::dpi, usershape_s::f, get_int_lsb_first(), usershape_s::h, and usershape_s::w.

Referenced by gvusershape_open().

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◆ gvusershape_file_release()

void gvusershape_file_release ( usershape_t * us )

Definition at line 712 of file gvusershape.c.

References usershape_s::f, usershape_s::nocache, and NULL.

Referenced by cairo_loadimage(), core_loadimage_ps(), gd_loadimage(), gdiplus_loadimage(), gdk_loadimage(), gvloadimage_process_file(), gvloadimage_rsvg_load(), gvusershape_open(), lasi_loadimage_ps(), and quartz_loadimage().

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◆ gvusershape_find()

usershape_t * gvusershape_find ( const char * name )

Definition at line 672 of file gvusershape.c.

References dtmatch, ImageDict, and NULL.

Referenced by gvrender_usershape(), and gvusershape_open().

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◆ gvusershape_open()

static usershape_t * gvusershape_open ( const char * name )

static

Definition at line 727 of file gvusershape.c.

References agstrdup(), agwarningf(), bmp_size(), usershape_s::data, dtinsert, dtopen(), Dttree, usershape_s::f, find_user_shape(), freeUsershape(), FT_BMP, FT_EPS, FT_GIF, FT_ICO, FT_JPEG, FT_NULL, FT_PDF, FT_PNG, FT_PS, FT_SVG, FT_WEBP, gif_size(), gv_alloc(), gvusershape_file_access(), gvusershape_file_release(), gvusershape_find(), ico_size(), ImageDict, ImageDictDisc, imagetype(), jpeg_size(), usershape_s::name, NULL, pdf_size(), png_size(), ps_size(), svg_size(), and webp_size().

Referenced by gvusershape_size().

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◆ gvusershape_size()

point gvusershape_size	(	graph_t *	g,
		char *	name
	)

Definition at line 813 of file gvusershape.c.

References dtclose(), GD_drawing, Gvimagepath, gvusershape_open(), gvusershape_size_dpi(), HTTPServerEnVar, ImageDict, NULL, pointf_s::x, and pointf_s::y.

Referenced by poly_init(), and size_html_img().

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◆ gvusershape_size_dpi()

point gvusershape_size_dpi	(	usershape_t *	us,
		pointf	dpi
	)

Definition at line 798 of file gvusershape.c.

References usershape_s::dpi, usershape_s::h, POINTS_PER_INCH, usershape_s::w, point::x, pointf_s::x, and pointf_s::y.

Referenced by gvrender_usershape(), and gvusershape_size().

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◆ ico_size()

static void ico_size ( usershape_t * us )

static

Definition at line 363 of file gvusershape.c.

References usershape_s::dpi, usershape_s::f, get_int_msb_first(), usershape_s::h, and usershape_s::w.

Referenced by gvusershape_open().

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◆ imagetype()

static imagetype_t imagetype ( usershape_t * us )

static

Definition at line 124 of file gvusershape.c.

References usershape_s::f, FT_NULL, FT_RIFF, FT_SVG, FT_WEBP, FT_XML, HDRLEN, knowntypes, NULL, usershape_s::stringtype, knowntype_t::stringtype, SVG_MAGIC, usershape_s::type, knowntype_t::type, and WEBP_MAGIC.

Referenced by gvusershape_open().

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◆ jpeg_size()

static void jpeg_size ( usershape_t * us )

static

Definition at line 419 of file gvusershape.c.

References agwarningf(), usershape_s::dpi, usershape_s::f, get_int_msb_first(), usershape_s::h, length(), usershape_s::name, and usershape_s::w.

Referenced by gvusershape_open().

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◆ pdf_size()

static void pdf_size ( usershape_t * us )

static

Definition at line 643 of file gvusershape.c.

References bboxPDF(), usershape_s::dpi, usershape_s::f, usershape_s::h, boxf::LL, boxf::UR, usershape_s::w, pointf_s::x, usershape_s::x, pointf_s::y, and usershape_s::y.

Referenced by gvusershape_open().

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◆ png_size()

static void png_size ( usershape_t * us )

static

Definition at line 352 of file gvusershape.c.

References usershape_s::dpi, usershape_s::f, get_int_msb_first(), usershape_s::h, and usershape_s::w.

Referenced by gvusershape_open().

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◆ ps_size()

static void ps_size ( usershape_t * us )

static

Definition at line 494 of file gvusershape.c.

References usershape_s::dpi, usershape_s::f, usershape_s::h, usershape_s::w, usershape_s::x, and usershape_s::y.

Referenced by gvusershape_open().

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◆ scanNum()

static int scanNum	(	char *	tok,
		double *	dp
	)

static

Definition at line 545 of file gvusershape.c.

References tok().

Referenced by boxof().

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◆ skipWS()

static void skipWS ( stream_t * str )

static

Definition at line 532 of file gvusershape.c.

References gv_isspace(), and str.

Referenced by boxof(), and getNum().

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◆ svg_size()

static void svg_size ( usershape_t * us )

static

Definition at line 266 of file gvusershape.c.

References agxbfree(), agxbputc(), agxbuse(), strview_t::data, usershape_s::dpi, usershape_s::f, find_attribute(), free(), usershape_s::h, optional_double_t::has_value, match(), optional_double_set(), optional_double_value_or(), strview_str(), strview_str_eq(), svg_units_convert(), match_t::value, optional_double_t::value, and usershape_s::w.

Referenced by gvusershape_open().

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◆ svg_units_convert()

static double svg_units_convert	(	double	n,
		char *	u
	)

static

Definition at line 210 of file gvusershape.c.

References POINTS_PER_CM, POINTS_PER_INCH, POINTS_PER_MM, and streq().

Referenced by svg_size().

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◆ usershape_close()

static void usershape_close ( void * p )

static

Definition at line 656 of file gvusershape.c.

References usershape_s::data, usershape_s::datafree, usershape_s::f, and free().

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◆ webp_size()

static void webp_size ( usershape_t * us )

static

Definition at line 374 of file gvusershape.c.

References usershape_s::dpi, usershape_s::f, get_int_lsb_first(), usershape_s::h, and usershape_s::w.

Referenced by gvusershape_open().

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Variable Documentation

◆ ImageDict

Dict_t* ImageDict

static

Definition at line 37 of file gvusershape.c.

Referenced by gvusershape_find(), gvusershape_open(), and gvusershape_size().

◆ ImageDictDisc

Dtdisc_t ImageDictDisc

static

Initial value:

= {
    .key = offsetof(usershape_t, name),
    .size = -1,
    .freef = usershape_close,
}

Definition at line 666 of file gvusershape.c.

Referenced by gvusershape_open().

◆ knowntypes

knowntype_t knowntypes[]

static

Definition at line 61 of file gvusershape.c.

Referenced by imagetype().

Data Structures

Macros

Functions

Variables

Macro Definition Documentation

◆ BMP_MAGIC

◆ EPS_MAGIC

◆ GIF_MAGIC

◆ HDRLEN

◆ ICO_MAGIC

◆ JPEG_MAGIC

◆ MAX_USERSHAPE_FILES_OPEN

◆ PDF_MAGIC

◆ PNG_MAGIC

◆ PS_MAGIC

◆ RIFF_MAGIC

◆ SVG_MAGIC

◆ WEBP_MAGIC

◆ XML_MAGIC

Function Documentation

◆ bboxPDF()

◆ bmp_size()

◆ boxof()

◆ find_attribute()

◆ freeUsershape()

◆ fstr()

◆ get_int_lsb_first()

◆ get_int_msb_first()

◆ getNum()

◆ gif_size()

◆ gvusershape_file_release()

◆ gvusershape_find()

◆ gvusershape_open()

◆ gvusershape_size()

◆ gvusershape_size_dpi()

◆ ico_size()

◆ imagetype()

◆ jpeg_size()

◆ pdf_size()

◆ png_size()

◆ ps_size()

◆ scanNum()

◆ skipWS()

◆ svg_size()

◆ svg_units_convert()

◆ usershape_close()

◆ webp_size()

Variable Documentation

◆ ImageDict

◆ ImageDictDisc

◆ knowntypes