/coders/svg.c

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/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%                            SSSSS  V   V   GGGG                              %
%                            SS     V   V  G                                  %
%                             SSS   V   V  G GG                               %
%                               SS   V V   G   G                              %
%                            SSSSS    V     GGG                               %
%                                                                             %
%                                                                             %
%                  Read/Write Scalable Vector Graphics Format                 %
%                                                                             %
%                              Software Design                                %
%                                   Cristy                                    %
%                             William Radcliffe                               %
%                                March 2000                                   %
%                                                                             %
%                                                                             %
%  Copyright 1999-2019 ImageMagick Studio LLC, a non-profit organization      %
%  dedicated to making software imaging solutions freely available.           %
%                                                                             %
%  You may not use this file except in compliance with the License.  You may  %
%  obtain a copy of the License at                                            %
%                                                                             %
%    https://imagemagick.org/script/license.php                               %
%                                                                             %
%  Unless required by applicable law or agreed to in writing, software        %
%  distributed under the License is distributed on an "AS IS" BASIS,          %
%  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.   %
%  See the License for the specific language governing permissions and        %
%  limitations under the License.                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%
*/

/*
  Include declarations.
*/
#include "MagickCore/studio.h"
#include "MagickCore/annotate.h"
#include "MagickCore/artifact.h"
#include "MagickCore/attribute.h"
#include "MagickCore/blob.h"
#include "MagickCore/blob-private.h"
#include "MagickCore/cache.h"
#include "MagickCore/constitute.h"
#include "MagickCore/composite-private.h"
#include "MagickCore/delegate.h"
#include "MagickCore/delegate-private.h"
#include "MagickCore/draw.h"
#include "MagickCore/exception.h"
#include "MagickCore/exception-private.h"
#include "MagickCore/gem.h"
#include "MagickCore/image.h"
#include "MagickCore/image-private.h"
#include "MagickCore/list.h"
#include "MagickCore/log.h"
#include "MagickCore/magick.h"
#include "MagickCore/memory_.h"
#include "MagickCore/memory-private.h"
#include "MagickCore/module.h"
#include "MagickCore/monitor.h"
#include "MagickCore/monitor-private.h"
#include "MagickCore/quantum-private.h"
#include "MagickCore/pixel-accessor.h"
#include "MagickCore/property.h"
#include "MagickCore/resource_.h"
#include "MagickCore/static.h"
#include "MagickCore/string_.h"
#include "MagickCore/string-private.h"
#include "MagickCore/token.h"
#include "MagickCore/utility.h"

#if defined(MAGICKCORE_XML_DELEGATE)
#  if defined(MAGICKCORE_WINDOWS_SUPPORT)
#    if !defined(__MINGW32__)
#      include <win32config.h>
#    endif
#  endif
#  include <libxml/xmlmemory.h>
#  include <libxml/parserInternals.h>
#  include <libxml/xmlerror.h>
#endif

#if defined(MAGICKCORE_AUTOTRACE_DELEGATE)
#include "autotrace/autotrace.h"
#endif

#if defined(MAGICKCORE_RSVG_DELEGATE)
#include "librsvg/rsvg.h"
#if !defined(LIBRSVG_CHECK_VERSION)
#include "librsvg/rsvg-cairo.h"
#include "librsvg/librsvg-features.h"
#elif !LIBRSVG_CHECK_VERSION(2,36,2)
#include "librsvg/rsvg-cairo.h"
#include "librsvg/librsvg-features.h"
#endif
#endif

/*
  Define declarations.
*/
#define DefaultSVGDensity  96.0

/*
  Typedef declarations.
*/
typedef struct _BoundingBox
{
  double
    x,
    y,
    width,
    height;
} BoundingBox;

typedef struct _ElementInfo
{
  double
    cx,
    cy,
    major,
    minor,
    angle;
} ElementInfo;

typedef struct _SVGInfo
{
  FILE
    *file;

  ExceptionInfo
    *exception;

  Image
    *image;

  const ImageInfo
    *image_info;

  AffineMatrix
    affine;

  size_t
    width,
    height;

  char
    *size,
    *title,
    *comment;

  int
    n;

  double
    *scale,
    pointsize;

  ElementInfo
    element;

  SegmentInfo
    segment;

  BoundingBox
    bounds,
    text_offset,
    view_box;

  PointInfo
    radius;

  char
    *stop_color,
    *offset,
    *text,
    *vertices,
    *url;

#if defined(MAGICKCORE_XML_DELEGATE)
  xmlParserCtxtPtr
    parser;

  xmlDocPtr
    document;
#endif

  ssize_t
    svgDepth;
} SVGInfo;

/*
  Static declarations.
*/
static char
  SVGDensityGeometry[] = "96.0x96.0";

/*
  Forward declarations.
*/
static MagickBooleanType
  WriteSVGImage(const ImageInfo *,Image *,ExceptionInfo *);

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   I s S V G                                                                 %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  IsSVG()() returns MagickTrue if the image format type, identified by the
%  magick string, is SVG.
%
%  The format of the IsSVG method is:
%
%      MagickBooleanType IsSVG(const unsigned char *magick,const size_t length)
%
%  A description of each parameter follows:
%
%    o magick: compare image format pattern against these bytes.
%
%    o length: Specifies the length of the magick string.
%
*/
static MagickBooleanType IsSVG(const unsigned char *magick,const size_t length)
{
  if (length < 4)
    return(MagickFalse);
  if (LocaleNCompare((const char *) magick+1,"svg",3) == 0)
    return(MagickTrue);
  if (length < 5)
    return(MagickFalse);
  if (LocaleNCompare((const char *) magick+1,"?xml",4) == 0)
    return(MagickTrue);
  return(MagickFalse);
}

/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                                             %
%                                                                             %
%                                                                             %
%   R e a d S V G I m a g e                                                   %
%                                                                             %
%                                                                             %
%                                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  ReadSVGImage() reads a Scalable Vector Gaphics file and returns it.  It
%  allocates the memory necessary for the new Image structure and returns a
%  pointer to the new image.
%
%  The format of the ReadSVGImage method is:
%
%      Image *ReadSVGImage(const ImageInfo *image_info,ExceptionInfo *exception)
%
%  A description of each parameter follows:
%
%    o image_info: the image info.
%
%    o exception: return any errors or warnings in this structure.
%
*/

static Image *RenderSVGImage(const ImageInfo *image_info,Image *image,
  ExceptionInfo *exception)
{
  char
    background[MagickPathExtent],
    command[MagickPathExtent],
    *density,
    input_filename[MagickPathExtent],
    opacity[MagickPathExtent],
    output_filename[MagickPathExtent],
    unique[MagickPathExtent];

  const DelegateInfo
    *delegate_info;

  Image
    *next;

  int
    status;

  struct stat
    attributes;

  /*
    Our best hope for compliance with the SVG standard.
  */
  delegate_info=GetDelegateInfo("svg:decode",(char *) NULL,exception);
  if (delegate_info == (const DelegateInfo *) NULL)
    return((Image *) NULL);
  status=AcquireUniqueSymbolicLink(image->filename,input_filename);
  (void) AcquireUniqueFilename(output_filename);
  (void) AcquireUniqueFilename(unique);
  density=AcquireString("");
  (void) FormatLocaleString(density,MagickPathExtent,"%.20g,%.20g",
    image->resolution.x,image->resolution.y);
  (void) FormatLocaleString(background,MagickPathExtent,
    "rgb(%.20g%%,%.20g%%,%.20g%%)",
    100.0*QuantumScale*image->background_color.red,
    100.0*QuantumScale*image->background_color.green,
    100.0*QuantumScale*image->background_color.blue);
  (void) FormatLocaleString(opacity,MagickPathExtent,"%.20g",QuantumScale*
    image->background_color.alpha);
  (void) FormatLocaleString(command,MagickPathExtent,
    GetDelegateCommands(delegate_info),input_filename,output_filename,density,
    background,opacity,unique);
  density=DestroyString(density);
  status=ExternalDelegateCommand(MagickFalse,image_info->verbose,command,
    (char *) NULL,exception);
  (void) RelinquishUniqueFileResource(unique);
  (void) RelinquishUniqueFileResource(input_filename);
  if ((status == 0) && (stat(output_filename,&attributes) == 0) &&
      (attributes.st_size > 0))
    {
      Image
        *svg_image;

      ImageInfo
        *read_info;

      read_info=CloneImageInfo(image_info);
      (void) CopyMagickString(read_info->filename,output_filename,
        MagickPathExtent);
      svg_image=ReadImage(read_info,exception);
      read_info=DestroyImageInfo(read_info);
      if (svg_image != (Image *) NULL)
        {
          (void) RelinquishUniqueFileResource(output_filename);
          for (next=GetFirstImageInList(svg_image); next != (Image *) NULL; )
          {
            (void) CopyMagickString(next->filename,image->filename,
              MaxTextExtent);
            (void) CopyMagickString(next->magick,image->magick,MaxTextExtent);
            next=GetNextImageInList(next);
          }
          return(svg_image);
        }
    }
  (void) RelinquishUniqueFileResource(output_filename);
  return((Image *) NULL);
}

#if defined(MAGICKCORE_XML_DELEGATE)
static SVGInfo *AcquireSVGInfo(void)
{
  SVGInfo
    *svg_info;

  svg_info=(SVGInfo *) AcquireMagickMemory(sizeof(*svg_info));
  if (svg_info == (SVGInfo *) NULL)
    return((SVGInfo *) NULL);
  (void) memset(svg_info,0,sizeof(*svg_info));
  svg_info->text=AcquireString("");
  svg_info->scale=(double *) AcquireCriticalMemory(sizeof(*svg_info->scale));
  GetAffineMatrix(&svg_info->affine);
  svg_info->scale[0]=ExpandAffine(&svg_info->affine);
  return(svg_info);
}

static SVGInfo *DestroySVGInfo(SVGInfo *svg_info)
{
  if (svg_info->text != (char *) NULL)
    svg_info->text=DestroyString(svg_info->text);
  if (svg_info->scale != (double *) NULL)
    svg_info->scale=(double *) RelinquishMagickMemory(svg_info->scale);
  if (svg_info->title != (char *) NULL)
    svg_info->title=DestroyString(svg_info->title);
  if (svg_info->comment != (char *) NULL)
    svg_info->comment=DestroyString(svg_info->comment);
  return((SVGInfo *) RelinquishMagickMemory(svg_info));
}

static double GetUserSpaceCoordinateValue(const SVGInfo *svg_info,int type,
  const char *string)
{
  char
    *next_token,
    token[MagickPathExtent];

  const char
    *p;

  double
    value;

  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",string);
  assert(string != (const char *) NULL);
  p=(const char *) string;
  GetNextToken(p,&p,MagickPathExtent,token);
  value=StringToDouble(token,&next_token);
  if (strchr(token,'%') != (char *) NULL)
    {
      double
        alpha,
        beta;

      if (type > 0)
        {
          if (svg_info->view_box.width == 0.0)
            return(0.0);
          return(svg_info->view_box.width*value/100.0);
        }
      if (type < 0)
        {
          if (svg_info->view_box.height == 0.0)
            return(0.0);
          return(svg_info->view_box.height*value/100.0);
        }
      alpha=value-svg_info->view_box.width;
      beta=value-svg_info->view_box.height;
      return(hypot(alpha,beta)/sqrt(2.0)/100.0);
    }
  GetNextToken(p,&p,MagickPathExtent,token);
  if (LocaleNCompare(token,"cm",2) == 0)
    return(DefaultSVGDensity*svg_info->scale[0]/2.54*value);
  if (LocaleNCompare(token,"em",2) == 0)
    return(svg_info->pointsize*value);
  if (LocaleNCompare(token,"ex",2) == 0)
    return(svg_info->pointsize*value/2.0);
  if (LocaleNCompare(token,"in",2) == 0)
    return(DefaultSVGDensity*svg_info->scale[0]*value);
  if (LocaleNCompare(token,"mm",2) == 0)
    return(DefaultSVGDensity*svg_info->scale[0]/25.4*value);
  if (LocaleNCompare(token,"pc",2) == 0)
    return(DefaultSVGDensity*svg_info->scale[0]/6.0*value);
  if (LocaleNCompare(token,"pt",2) == 0)
    return(svg_info->scale[0]*value);
  if (LocaleNCompare(token,"px",2) == 0)
    return(value);
  return(value);
}

#if defined(__cplusplus) || defined(c_plusplus)
extern "C" {
#endif

static int SVGIsStandalone(void *context)
{
  SVGInfo
    *svg_info;

  /*
    Is this document tagged standalone?
  */
  (void) LogMagickEvent(CoderEvent,GetMagickModule(),"  SAX.SVGIsStandalone()");
  svg_info=(SVGInfo *) context;
  return(svg_info->document->standalone == 1);
}

static int SVGHasInternalSubset(void *context)
{
  SVGInfo
    *svg_info;

  /*
    Does this document has an internal subset?
  */
  (void) LogMagickEvent(CoderEvent,GetMagickModule(),
    "  SAX.SVGHasInternalSubset()");
  svg_info=(SVGInfo *) context;
  return(svg_info->document->intSubset != NULL);
}

static int SVGHasExternalSubset(void *context)
{
  SVGInfo
    *svg_info;

  /*
    Does this document has an external subset?
  */
  (void) LogMagickEvent(CoderEvent,GetMagickModule(),
    "  SAX.SVGHasExternalSubset()");
  svg_info=(SVGInfo *) context;
  return(svg_info->document->extSubset != NULL);
}

static void SVGInternalSubset(void *context,const xmlChar *name,
  const xmlChar *external_id,const xmlChar *system_id)
{
  SVGInfo
    *svg_info;

  /*
    Does this document has an internal subset?
  */
  (void) LogMagickEvent(CoderEvent,GetMagickModule(),
    "  SAX.internalSubset(%s, %s, %s)",(const char *) name,
    (external_id != (const xmlChar *) NULL ? (const char *) external_id : "none"),
    (system_id != (const xmlChar *) NULL ? (const char *) system_id : "none"));
  svg_info=(SVGInfo *) context;
  (void) xmlCreateIntSubset(svg_info->document,name,external_id,system_id);
}

static xmlParserInputPtr SVGResolveEntity(void *context,
  const xmlChar *public_id,const xmlChar *system_id)
{
  SVGInfo
    *svg_info;

  xmlParserInputPtr
    stream;

  /*
    Special entity resolver, better left to the parser, it has more
    context than the application layer.  The default behaviour is to
    not resolve the entities, in that case the ENTITY_REF nodes are
    built in the structure (and the parameter values).
  */
  (void) LogMagickEvent(CoderEvent,GetMagickModule(),
    "  SAX.resolveEntity(%s, %s)",
    (public_id != (const xmlChar *) NULL ? (const char *) public_id : "none"),
    (system_id != (const xmlChar *) NULL ? (const char *) system_id : "none"));
  svg_info=(SVGInfo *) context;
  stream=xmlLoadExternalEntity((const char *) system_id,(const char *)
    public_id,svg_info->parser);
  return(stream);
}

static xmlEntityPtr SVGGetEntity(void *context,const xmlChar *name)
{
  SVGInfo
    *svg_info;

  /*
    Get an entity by name.
  */
  (void) LogMagickEvent(CoderEvent,GetMagickModule(),"  SAX.SVGGetEntity(%s)",
    name);
  svg_info=(SVGInfo *) context;
  return(xmlGetDocEntity(svg_info->document,name));
}

static xmlEntityPtr SVGGetParameterEntity(void *context,const xmlChar *name)
{
  SVGInfo
    *svg_info;

  /*
    Get a parameter entity by name.
  */
  (void) LogMagickEvent(CoderEvent,GetMagickModule(),
    "  SAX.getParameterEntity(%s)",name);
  svg_info=(SVGInfo *) context;
  return(xmlGetParameterEntity(svg_info->document,name));
}

static void SVGEntityDeclaration(void *context,const xmlChar *name,int type,
  const xmlChar *public_id,const xmlChar *system_id,xmlChar *content)
{
  SVGInfo
    *svg_info;

  /*
    An entity definition has been parsed.
  */
  (void) LogMagickEvent(CoderEvent,GetMagickModule(),
    "  SAX.entityDecl(%s, %d, %s, %s, %s)",name,type,
    public_id != (xmlChar *) NULL ? (const char *) public_id : "none",
    system_id != (xmlChar *) NULL ? (const char *) system_id : "none",content);
  svg_info=(SVGInfo *) context;
  if (svg_info->parser->inSubset == 1)
    (void) xmlAddDocEntity(svg_info->document,name,type,public_id,system_id,
      content);
  else
    if (svg_info->parser->inSubset == 2)
      (void) xmlAddDtdEntity(svg_info->document,name,type,public_id,system_id,
        content);
}

static void SVGAttributeDeclaration(void *context,const xmlChar *element,
  const xmlChar *name,int type,int value,const xmlChar *default_value,
  xmlEnumerationPtr tree)
{
  SVGInfo
    *svg_info;

  xmlChar
    *fullname,
    *prefix;

  xmlParserCtxtPtr
    parser;

  /*
    An attribute definition has been parsed.
  */
  (void) LogMagickEvent(CoderEvent,GetMagickModule(),
    "  SAX.attributeDecl(%s, %s, %d, %d, %s, ...)",element,name,type,value,
    default_value);
  svg_info=(SVGInfo *) context;
  fullname=(xmlChar *) NULL;
  prefix=(xmlChar *) NULL;
  parser=svg_info->parser;
  fullname=(xmlChar *) xmlSplitQName(parser,name,&prefix);
  if (parser->inSubset == 1)
    (void) xmlAddAttributeDecl(&parser->vctxt,svg_info->document->intSubset,
      element,fullname,prefix,(xmlAttributeType) type,
      (xmlAttributeDefault) value,default_value,tree);
  else
    if (parser->inSubset == 2)
      (void) xmlAddAttributeDecl(&parser->vctxt,svg_info->document->extSubset,
        element,fullname,prefix,(xmlAttributeType) type,
        (xmlAttributeDefault) value,default_value,tree);
  if (prefix != (xmlChar *) NULL)
    xmlFree(prefix);
  if (fullname != (xmlChar *) NULL)
    xmlFree(fullname);
}

static void SVGElementDeclaration(void *context,const xmlChar *name,int type,
  xmlElementContentPtr content)
{
  SVGInfo
    *svg_info;

  xmlParserCtxtPtr
    parser;

  /*
    An element definition has been parsed.
  */
  (void) LogMagickEvent(CoderEvent,GetMagickModule(),
    "  SAX.elementDecl(%s, %d, ...)",name,type);
  svg_info=(SVGInfo *) context;
  parser=svg_info->parser;
  if (parser->inSubset == 1)
    (void) xmlAddElementDecl(&parser->vctxt,svg_info->document->intSubset,
      name,(xmlElementTypeVal) type,content);
  else
    if (parser->inSubset == 2)
      (void) xmlAddElementDecl(&parser->vctxt,svg_info->document->extSubset,
        name,(xmlElementTypeVal) type,content);
}

static void SVGStripString(const MagickBooleanType trim,char *message)
{
  register char
    *p,
    *q;

  size_t
    length;

  assert(message != (char *) NULL);
  if (*message == '\0')
    return;
  /*
    Remove comment.
  */
  q=message;
  for (p=message; *p != '\0'; p++)
  {
    if ((*p == '/') && (*(p+1) == '*'))
      {
        for ( ; *p != '\0'; p++)
          if ((*p == '*') && (*(p+1) == '/'))
            {
              p+=2;
              break;
            }
        if (*p == '\0')
          break;
      }
    *q++=(*p);
  }
  *q='\0';
  length=strlen(message);
  if ((trim != MagickFalse) && (length != 0))
    {
      /*
        Remove whitespace.
      */
      p=message;
      while (isspace((int) ((unsigned char) *p)) != 0)
        p++;
      if ((*p == '\'') || (*p == '"'))
        p++;
      q=message+length-1;
      while ((isspace((int) ((unsigned char) *q)) != 0) && (q > p))
        q--;
      if (q > p)
        if ((*q == '\'') || (*q == '"'))
          q--;
      (void) memmove(message,p,(size_t) (q-p+1));
      message[q-p+1]='\0';
    }
  /*
    Convert newlines to a space.
  */
  for (p=message; *p != '\0'; p++)
    if (*p == '\n')
      *p=' ';
}

static char **SVGKeyValuePairs(void *context,const int key_sentinel,
  const int value_sentinel,const char *text,size_t *number_tokens)
{
  char
    **tokens;

  register const char
    *p,
    *q;

  register ssize_t
    i;

  size_t
    extent;

  SVGInfo
    *svg_info;

  svg_info=(SVGInfo *) context;
  *number_tokens=0;
  if (text == (const char *) NULL)
    return((char **) NULL);
  extent=8;
  tokens=(char **) AcquireQuantumMemory(extent+2UL,sizeof(*tokens));
  if (tokens == (char **) NULL)
    {
      (void) ThrowMagickException(svg_info->exception,GetMagickModule(),
        ResourceLimitError,"MemoryAllocationFailed","`%s'",text);
      return((char **) NULL);
    }
  /*
    Convert string to an ASCII list.
  */
  i=0;
  p=text;
  for (q=p; *q != '\0'; q++)
  {
    if ((*q != key_sentinel) && (*q != value_sentinel) && (*q != '\0'))
      continue;
    if (i == (ssize_t) extent)
      {
        extent<<=1;
        tokens=(char **) ResizeQuantumMemory(tokens,extent+2,sizeof(*tokens));
        if (tokens == (char **) NULL)
          {
            (void) ThrowMagickException(svg_info->exception,GetMagickModule(),
              ResourceLimitError,"MemoryAllocationFailed","`%s'",text);
            return((char **) NULL);
          }
      }
    tokens[i]=AcquireString(p);
    (void) CopyMagickString(tokens[i],p,(size_t) (q-p+1));
    SVGStripString(MagickTrue,tokens[i]);
    i++;
    p=q+1;
  }
  tokens[i]=AcquireString(p);
  (void) CopyMagickString(tokens[i],p,(size_t) (q-p+1));
  SVGStripString(MagickTrue,tokens[i++]);
  tokens[i]=(char *) NULL;
  *number_tokens=(size_t) i;
  return(tokens);
}

static void SVGNotationDeclaration(void *context,const xmlChar *name,
  const xmlChar *public_id,const xmlChar *system_id)
{
  SVGInfo
    *svg_info;

  xmlParserCtxtPtr
    parser;

  /*
    What to do when a notation declaration has been parsed.
  */
  (void) LogMagickEvent(CoderEvent,GetMagickModule(),
    "  SAX.notationDecl(%s, %s, %s)",name,
    public_id != (const xmlChar *) NULL ? (const char *) public_id : "none",
    system_id != (const xmlChar *) NULL ? (const char *) system_id : "none");
  svg_info=(SVGInfo *) context;
  parser=svg_info->parser;
  if (parser->inSubset == 1)
    (void) xmlAddNotationDecl(&parser->vctxt,svg_info->document->intSubset,
      name,public_id,system_id);
  else
    if (parser->inSubset == 2)
      (void) xmlAddNotationDecl(&parser->vctxt,svg_info->document->intSubset,
        name,public_id,system_id);
}

static void SVGProcessStyleElement(void *context,const xmlChar *name,
  const char *style)
{
  char
    background[MagickPathExtent],
    *color,
    *keyword,
    *units,
    *value;

  char
    **tokens;

  register ssize_t
    i;

  size_t
    number_tokens;

  SVGInfo
    *svg_info;

  (void) LogMagickEvent(CoderEvent,GetMagickModule(),"  ");
  svg_info=(SVGInfo *) context;
  tokens=SVGKeyValuePairs(context,':',';',style,&number_tokens);
  if (tokens == (char **) NULL)
    return;
  for (i=0; i < (ssize_t) (number_tokens-1); i+=2)
  {
    keyword=(char *) tokens[i];
    value=(char *) tokens[i+1];
    if (LocaleCompare(keyword,"font-size") != 0)
      continue;
    svg_info->pointsize=GetUserSpaceCoordinateValue(svg_info,0,value);
    (void) FormatLocaleFile(svg_info->file,"font-size %g\n",
      svg_info->pointsize);
  }
  color=AcquireString("none");
  units=AcquireString("userSpaceOnUse");
  for (i=0; i < (ssize_t) (number_tokens-1); i+=2)
  {
    keyword=(char *) tokens[i];
    value=(char *) tokens[i+1];
    (void) LogMagickEvent(CoderEvent,GetMagickModule(),"    %s: %s",keyword,
      value);
    switch (*keyword)
    {
      case 'B':
      case 'b':
      {
        if (LocaleCompare((const char *) name,"background") == 0)
          {
            if (LocaleCompare((const char *) name,"svg") == 0)
              (void) CopyMagickString(background,value,MagickPathExtent);
            break;
          }
        break;
      }
      case 'C':
      case 'c':
      {
         if (LocaleCompare(keyword,"clip-path") == 0)
           {
             (void) FormatLocaleFile(svg_info->file,"clip-path \"%s\"\n",value);
             break;
           }
        if (LocaleCompare(keyword,"clip-rule") == 0)
          {
            (void) FormatLocaleFile(svg_info->file,"clip-rule \"%s\"\n",value);
            break;
          }
         if (LocaleCompare(keyword,"clipPathUnits") == 0)
           {
             (void) CloneString(&units,value);
             (void) FormatLocaleFile(svg_info->file,"clip-units \"%s\"\n",
               value);
             break;
           }
        if (LocaleCompare(keyword,"color") == 0)
          {
            (void) CloneString(&color,value);
            break;
          }
        break;
      }
      case 'F':
      case 'f':
      {
        if (LocaleCompare(keyword,"fill") == 0)
          {
             if (LocaleCompare(value,"currentColor") == 0)
               {
                 (void) FormatLocaleFile(svg_info->file,"fill \"%s\"\n",color);
                 break;
               }
            if (LocaleCompare(value,"#000000ff") == 0)
              (void) FormatLocaleFile(svg_info->file,"fill '#000000'\n");
            else
              (void) FormatLocaleFile(svg_info->file,"fill \"%s\"\n",value);
            break;
          }
        if (LocaleCompare(keyword,"fillcolor") == 0)
          {
            (void) FormatLocaleFile(svg_info->file,"fill \"%s\"\n",value);
            break;
          }
        if (LocaleCompare(keyword,"fill-rule") == 0)
          {
            (void) FormatLocaleFile(svg_info->file,"fill-rule \"%s\"\n",value);
            break;
          }
        if (LocaleCompare(keyword,"fill-opacity") == 0)
          {
            (void) FormatLocaleFile(svg_info->file,"fill-opacity \"%s\"\n",
              value);
            break;
          }
        if (LocaleCompare(keyword,"font") == 0)
          {
            char
              family[MagickPathExtent],
              size[MagickPathExtent],
              style[MagickPathExtent];

            if (sscanf(value,"%2048s %2048s %2048s",style,size,family) != 3)
              break;
            if (GetUserSpaceCoordinateValue(svg_info,0,style) == 0)
              (void) FormatLocaleFile(svg_info->file,"font-style \"%s\"\n",
                style);
            else
              if (sscanf(value,"%2048s %2048s",size,family) != 2)
                break;
            (void) FormatLocaleFile(svg_info->file,"font-size \"%s\"\n",size);
            (void) FormatLocaleFile(svg_info->file,"font-family \"%s\"\n",
              family);
            break;
          }
        if (LocaleCompare(keyword,"font-family") == 0)
          {
            (void) FormatLocaleFile(svg_info->file,"font-family \"%s\"\n",
              value);
            break;
          }
        if (LocaleCompare(keyword,"font-stretch") == 0)
          {
            (void) FormatLocaleFile(svg_info->file,"font-stretch \"%s\"\n",
              value);
            break;
          }
        if (LocaleCompare(keyword,"font-style") == 0)
          {
            (void) FormatLocaleFile(svg_info->file,"font-style \"%s\"\n",value);
            break;
          }
        if (LocaleCompare(keyword,"font-size") == 0)
          {
            svg_info->pointsize=GetUserSpaceCoordinateValue(svg_info,0,value);
            (void) FormatLocaleFile(svg_info->file,"font-size %g\n",
              svg_info->pointsize);
            break;
          }
        if (LocaleCompare(keyword,"font-weight") == 0)
          {
            (void) FormatLocaleFile(svg_info->file,"font-weight \"%s\"\n",
              value);
            break;
          }
        break;
      }
      case 'K':
      case 'k':
      {
        if (LocaleCompare(keyword,"kerning") == 0)
          {
            (void) FormatLocaleFile(svg_info->file,"kerning \"%s\"\n",value);
            break;
          }
        break;
      }
      case 'L':
      case 'l':
      {
        if (LocaleCompare(keyword,"letter-spacing") == 0)
          {
            (void) FormatLocaleFile(svg_info->file,"letter-spacing \"%s\"\n",
              value);
            break;
          }
        break;
      }
      case 'M':
      case 'm':
      {
        if (LocaleCompare(keyword,"mask") == 0)
          {
            (void) FormatLocaleFile(svg_info->file,"mask \"%s\"\n",value);
            break;
          }
        break;
      }
      case 'O':
      case 'o':
      {
        if (LocaleCompare(keyword,"offset") == 0)
          {
            (void) FormatLocaleFile(svg_info->file,"offset %g\n",
              GetUserSpaceCoordinateValue(svg_info,1,value));
            break;
          }
        if (LocaleCompare(keyword,"opacity") == 0)
          {
            (void) FormatLocaleFile(svg_info->file,"opacity \"%s\"\n",value);
            break;
          }
        break;
      }
      case 'S':
      case 's':
      {
        if (LocaleCompare(keyword,"stop-color") == 0)
          {
            (void) CloneString(&svg_info->stop_color,value);
            break;
          }
        if (LocaleCompare(keyword,"stroke") == 0)
          {
            if (LocaleCompare(value,"currentColor") == 0)
              {
                (void) FormatLocaleFile(svg_info->file,"stroke \"%s\"\n",color);
                break;
              }
            if (LocaleCompare(value,"#000000ff") == 0)
              (void) FormatLocaleFile(svg_info->file,"fill '#000000'\n");
            else
              (void) FormatLocaleFile(svg_info->file,
                "stroke \"%s\"\n",value);
            break;
          }
        if (LocaleCompare(keyword,"stroke-antialiasing") == 0)
          {
            (void) FormatLocaleFile(svg_info->file,"stroke-antialias %d\n",
              LocaleCompare(value,"true") == 0);
            break;
          }
        if (LocaleCompare(keyword,"stroke-dasharray") == 0)
          {
            (void) FormatLocaleFile(svg_info->file,"stroke-dasharray %s\n",
              value);
            break;
          }
        if (LocaleCompare(keyword,"stroke-dashoffset") == 0)
          {
            (void) FormatLocaleFile(svg_info->file,"stroke-dashoffset %g\n",
              GetUserSpaceCoordinateValue(svg_info,1,value));
            break;
          }
        if (LocaleCompare(keyword,"stroke-linecap") == 0)
          {
            (void) FormatLocaleFile(svg_info->file,"stroke-linecap \"%s\"\n",
              value);
            break;
          }
        if (LocaleCompare(keyword,"stroke-linejoin") == 0)
          {
            (void) FormatLocaleFile(svg_info->file,"stroke-linejoin \"%s\"\n",
              value);
            break;
          }
        if (LocaleCompare(keyword,"stroke-miterlimit") == 0)
          {
            (void) FormatLocaleFile(svg_info->file,"stroke-miterlimit \"%s\"\n",
              value);
            break;
          }
        if (LocaleCompare(keyword,"stroke-opacity") == 0)
          {
            (void) FormatLocaleFile(svg_info->file,"stroke-opacity \"%s\"\n",
              value);
            break;
          }
        if (LocaleCompare(keyword,"stroke-width") == 0)
          {
            (void) FormatLocaleFile(svg_info->file,"stroke-width %g\n",
              GetUserSpaceCoordinateValue(svg_info,1,value));
            break;
          }
        break;
      }
      case 't':
      case 'T':
      {
        if (LocaleCompare(keyword,"text-align") == 0)
          {
            (void) FormatLocaleFile(svg_info->file,"text-align \"%s\"\n",value);
            break;
          }
        if (LocaleCompare(keyword,"text-anchor") == 0)
          {
            (void) FormatLocaleFile(svg_info->file,"text-anchor \"%s\"\n",
              value);
            break;
          }
        if (LocaleCompare(keyword,"text-decoration") == 0)
          {
            if (LocaleCompare(value,"underline") == 0)
              (void) FormatLocaleFile(svg_info->file,"decorate underline\n");
            if (LocaleCompare(value,"line-through") == 0)
              (void) FormatLocaleFile(svg_info->file,"decorate line-through\n");
            if (LocaleCompare(value,"overline") == 0)
              (void) FormatLocaleFile(svg_info->file,"decorate overline\n");
            break;
          }
        if (LocaleCompare(keyword,"text-antialiasing") == 0)
          {
            (void) FormatLocaleFile(svg_info->file,"text-antialias %d\n",
              LocaleCompare(value,"true") == 0);
            break;
          }
        break;
      }
      default:
        break;
    }
  }
  if (units != (char *) NULL)
    units=DestroyString(units);
  if (color != (char *) NULL)
    color=DestroyString(color);
  for (i=0; tokens[i] != (char *) NULL; i++)
    tokens[i]=DestroyString(tokens[i]);
  tokens=(char **) RelinquishMagickMemory(tokens);
}

static void SVGUnparsedEntityDeclaration(void *context,const xmlChar *name,
  const xmlChar *public_id,const xmlChar *system_id,const xmlChar *notation)
{
  SVGInfo
    *svg_info;

  /*
    What to do when an unparsed entity declaration is parsed.
  */
  (void) LogMagickEvent(CoderEvent,GetMagickModule(),
    "  SAX.unparsedEntityDecl(%s, %s, %s, %s)",name,
    public_id != (xmlChar *) NULL ? (const char *) public_id : "none",
    system_id != (xmlChar *) NULL ? (const char *) system_id : "none",notation);
  svg_info=(SVGInfo *) context;
  (void) xmlAddDocEntity(svg_info->document,name,
    XML_EXTERNAL_GENERAL_UNPARSED_ENTITY,public_id,system_id,notation);

}

static void SVGSetDocumentLocator(void *context,xmlSAXLocatorPtr location)
{
  SVGInfo
    *svg_info;

  /*
    Receive the document locator at startup, actually xmlDefaultSAXLocator.
  */
  (void) location;
  (void) LogMagickEvent(CoderEvent,GetMagickModule(),
    "  SAX.setDocumentLocator()");
  svg_info=(SVGInfo *) context;
  (void) svg_info;
}

static void SVGStartDocument(void *context)
{
  SVGInfo
    *svg_info;

  xmlParserCtxtPtr
    parser;

  /*
    Called when the document start being processed.
  */
  (void) LogMagickEvent(CoderEvent,GetMagickModule(),"  SAX.startDocument()");
  svg_info=(SVGInfo *) context;
  parser=svg_info->parser;
  svg_info->document=xmlNewDoc(parser->version);
  if (svg_info->document == (xmlDocPtr) NULL)
    return;
  if (parser->encoding == NULL)
    svg_info->document->encoding=(const xmlChar *) NULL;
  else
    svg_info->document->encoding=xmlStrdup(parser->encoding);
  svg_info->document->standalone=parser->standalone;
}

static void SVGEndDocument(void *context)
{
  SVGInfo
    *svg_info;

  /*
    Called when the document end has been detected.
  */
  (void) LogMagickEvent(CoderEvent,GetMagickModule(),"  SAX.endDocument()");
  svg_info=(SVGInfo *) context;
  if (svg_info->offset != (char *) NULL)
    svg_info->offset=DestroyString(svg_info->offset);
  if (svg_info->stop_color != (char *) NULL)
    svg_info->stop_color=DestroyString(svg_info->stop_color);
  if (svg_info->scale != (double *) NULL)
    svg_info->scale=(double *) RelinquishMagickMemory(svg_info->scale);
  if (svg_info->text != (char *) NULL)
    svg_info->text=DestroyString(svg_info->text);
  if (svg_info->vertices != (char *) NULL)
    svg_info->vertices=DestroyString(svg_info->vertices);
  if (svg_info->url != (char *) NULL)
    svg_info->url=DestroyString(svg_info->url);
#if defined(MAGICKCORE_XML_DELEGATE)
  if (svg_info->document != (xmlDocPtr) NULL)
    {
      xmlFreeDoc(svg_info->document);
      svg_info->document=(xmlDocPtr) NULL;
    }
#endif
}

static void SVGStartElement(void *context,const xmlChar *name,
  const xmlChar **attributes)
{
#define PushGraphicContext(id) \
{ \
  if (*id == '\0') \
    (void) FormatLocaleFile(svg_info->file,"push graphic-context\n"); \
  else \
    (void) FormatLocaleFile(svg_info->file,"push graphic-context \"%s\"\n", \
      id); \
}

  char
    *color,
    background[MagickPathExtent],
    id[MagickPathExtent],
    *next_token,
    token[MagickPathExtent],
    **tokens,
    *units;

  const char
    *keyword,
    *p,
    *value;

  register ssize_t
    i,
    j;

  size_t
    number_tokens;

  SVGInfo
    *svg_info;

  /*
    Called when an opening tag has been processed.
  */
  (void) LogMagickEvent(CoderEvent,GetMagickModule(),"  SAX.startElement(%s",
    name);
  svg_info=(SVGInfo *) context;
  svg_info->n++;
  svg_info->scale=(double *) ResizeQuantumMemory(svg_info->scale,
    svg_info->n+1UL,sizeof(*svg_info->scale));
  if (svg_info->scale == (double *) NULL)
    {
      (void) ThrowMagickException(svg_info->exception,GetMagickModule(),
        ResourceLimitError,"MemoryAllocationFailed","`%s'",name);
      return;
    }
  svg_info->scale[svg_info->n]=svg_info->scale[svg_info->n-1];
  color=AcquireString("none");
  units=AcquireString("userSpaceOnUse");
  *id='\0';
  *token='\0';
  *background='\0';
  value=(const char *) NULL;
  if ((LocaleCompare((char *) name,"image") == 0) ||
      (LocaleCompare((char *) name,"pattern") == 0) ||
      (LocaleCompare((char *) name,"rect") == 0) ||
      (LocaleCompare((char *) name,"text") == 0) ||
      (LocaleCompare((char *) name,"use") == 0))
    {
      svg_info->bounds.x=0.0;
      svg_info->bounds.y=0.0;
    }
  if (attributes != (const xmlChar **) NULL)
    for (i=0; (attributes[i] != (const xmlChar *) NULL); i+=2)
    {
      keyword=(const char *) attributes[i];
      value=(const char *) attributes[i+1];
      switch (*keyword)
      {
        case 'C':
        case 'c':
        {
          if (LocaleCompare(keyword,"cx") == 0)
            {
              svg_info->element.cx=
                GetUserSpaceCoordinateValue(svg_info,1,value);
              break;
            }
          if (LocaleCompare(keyword,"cy") == 0)
            {
              svg_info->element.cy=
                GetUserSpaceCoordinateValue(svg_info,-1,value);
              break;
            }
          break;
        }
        case 'F':
        case 'f':
        {
          if (LocaleCompare(keyword,"fx") == 0)
            {
              svg_info->element.major=
                GetUserSpaceCoordinateValue(svg_info,1,value);
              break;
            }
          if (LocaleCompare(keyword,"fy") == 0)
            {
              svg_info->element.minor=
                GetUserSpaceCoordinateValue(svg_info,-1,value);
              break;
            }
          break;
        }
        case 'H':
        case 'h':
        {
          if (LocaleCompare(keyword,"height") == 0)
            {
              svg_info->bounds.height=
                GetUserSpaceCoordinateValue(svg_info,-1,value);
              break;
            }
          break;
        }
        case 'I':
        case 'i':
        {
          if (LocaleCompare(keyword,"id") == 0)
            {
              (void) CopyMagickString(id,value,MagickPathExtent);
              break;
            }
          break;
        }
        case 'R':
        case 'r':
        {
          if (LocaleCompare(keyword,"r") == 0)
            {
              svg_info->element.angle=
                GetUserSpaceCoordinateValue(svg_info,0,value);
              break;
            }
          break;
        }
        case 'W':
        case 'w':
        {
          if (LocaleCompare(keyword,"width") == 0)
            {
              svg_info->bounds.width=
                GetUserSpaceCoordinateValue(svg_info,1,value);
              break;
            }
          break;
        }
        case 'X':
        case 'x':
        {
          if (LocaleCompare(keyword,"x") == 0)
            {
              svg_info->bounds.x=GetUserSpaceCoordinateValue(svg_info,1,value);
              break;
            }
          if (LocaleCompare(keyword,"x1") == 0)
            {
              svg_info->segment.x1=GetUserSpaceCoordinateValue(svg_info,1,
                value);
              break;
            }
          if (LocaleCompare(keyword,"x2") == 0)
            {
              svg_info->segment.x2=GetUserSpaceCoordinateValue(svg_info,1,
                value);
              break;
            }
          break;
        }
        case 'Y':
        case 'y':
        {
          if (LocaleCompare(keyword,"y") == 0)
            {
              svg_info->bounds.y=GetUserSpaceCoordinateValue(svg_info,-1,value);
              break;
            }
          if (LocaleCompare(keyword,"y1") == 0)
            {
              svg_info->segment.y1=GetUserSpaceCoordinateValue(svg_info,-1,
                value);
              break;
            }
          if (LocaleCompare(keyword,"y2") == 0)
            {
              svg_info->segment.y2=GetUserSpaceCoordinateValue(svg_info,-1,
                value);
              break;
            }
          break;
        }
        default:
          break;
      }
    }
  if (strchr((char *) name,':') != (char *) NULL)
    {
      /*
        Skip over namespace.
      */
      for ( ; *name != ':'; name++) ;
      name++;
    }
  switch (*name)
  {
    case 'C':
    case 'c':
    {
      if (LocaleCompare((const char *) name,"circle") == 0)
        {
          PushGraphicContext(id);
          break;
        }
      if (LocaleCompare((const char *) name,"clipPath") == 0)
        {
          (void) FormatLocaleFile(svg_info->file,"push clip-path \"%s\"\n",id);
          break;
        }
      break;
    }
    case 'D':
    case 'd':
    {
      if (LocaleCompare((const char *) name,"defs") == 0)
        {
          (void) FormatLocaleFile(svg_info->file,"push defs\n");
          break;
        }
      break;
    }
    case 'E':
    case 'e':
    {
      if (LocaleCompare((const char *) name,"ellipse") == 0)
        {
          PushGraphicContext(id);
          break;
        }
      break;
    }
    case 'F':
    case 'f':
    {
      if (LocaleCompare((const char *) name,"foreignObject") == 0)
        {
          PushGraphicContext(id);
          break;
        }
      break;
    }
    case 'G':
    case 'g':
    {
      if (LocaleCompare((const char *) name,"g") == 0)
        {
          PushGraphicContext(id);
          break;
        }
      break;
    }
    case 'I':
    case 'i':
    {
      if (LocaleCompare((const char *) name,"image") == 0)
        {
          PushGraphicContext(id);
          break;
        }
      break;
    }
    case 'L':
    case 'l':
    {
      if (LocaleCompare((const char *) name,"line") == 0)
        {
          PushGraphicContext(id);
          break;
        }
      if (LocaleCompare((const char *) name,"linearGradient") == 0)
        {
          (void) FormatLocaleFile(svg_info->file,
            "push gradient \"%s\" linear %g,%g %g,%g\n",id,
            svg_info->segment.x1,svg_info->segment.y1,svg_info->segment.x2,
            svg_info->segment.y2);
          break;
        }
      break;
    }
    case 'M':
    case 'm':
    {
      if (LocaleCompare((const char *) name,"mask") == 0)
        {
          (void) FormatLocaleFile(svg_info->file,"push mask \"%s\"\n",id);
          break;
        }
      break;
    }
    case 'P':
    case 'p':
    {
      if (LocaleCompare((const char *) name,"path") == 0)
        {
          PushGraphicContext(id);
          break;
        }
      if (LocaleCompare((const char *) name,"pattern") == 0)
        {
          (void) FormatLocaleFile(svg_info->file,
            "push pattern \"%s\" %g,%g %g,%g\n",id,
            svg_info->bounds.x,svg_info->bounds.y,svg_info->bounds.width,
            svg_info->bounds.height);
          break;
        }
      if (LocaleCompare((const char *) name,"polygon") == 0)
        {
          PushGraphicContext(id);
          break;
        }
      if (LocaleCompare((const char *) name,"polyline") == 0)
        {
          PushGraphicContext(id);
          break;
        }
      break;
    }
    case 'R':
    case 'r':
    {
      if (LocaleCompare((const char *) name,"radialGradient") == 0)
        {
          (void) FormatLocaleFile(svg_info->file,
            "push gradient \"%s\" radial %g,%g %g,%g %g\n",
            id,svg_info->element.cx,svg_info->element.cy,
            svg_info->element.major,svg_info->element.minor,
            svg_info->element.angle);
          break;
        }
      if (LocaleCompare((const char *) name,"rect") == 0)
        {
          PushGraphicContext(id);
          break;
        }
      break;
    }
    case 'S':
    case 's':
    {
      if (LocaleCompare((char *) name,"style") == 0)
        break;
      if (LocaleCompare((const char *) name,"svg") == 0)
        {
          svg_info->svgDepth++;
          PushGraphicContext(id);
          (void) FormatLocaleFile(svg_info->file,"compliance \"SVG\"\n");
          (void) FormatLocaleFile(svg_info->file,"fill \"black\"\n");
          (void) FormatLocaleFile(svg_info->file,"fill-opacity 1\n");
          (void) FormatLocaleFile(svg_info->file,"stroke \"none\"\n");
          (void) FormatLocaleFile(svg_info->file,"stroke-width 1\n");
          (void) FormatLocaleFile(svg_info->file,"stroke-opacity 1\n");
          (void) FormatLocaleFile(svg_info->file,"fill-rule nonzero\n");
          break;
        }
      if (LocaleCompare((const char *) name,"symbol") == 0)
        {
          (void) FormatLocaleFile(svg_info->file,"push symbol\n");
          break;
        }
      break;
    }
    case 'T':
    case 't':
    {
      if (LocaleCompare((const char *) name,"text") == 0)
        {
          PushGraphicContext(id);
          (void) FormatLocaleFile(svg_info->file,"class \"text\"\n");
          svg_info->text_offset.x=svg_info->bounds.x;
          svg_info->text_offset.y=svg_info->bounds.y;
          svg_info->bounds.x=0.0;
          svg_info->bounds.y=0.0;
          svg_info->bounds.width=0.0;
          svg_info->bounds.height=0.0;
          break;
        }
      if (LocaleCompare((const char *) name,"tspan") == 0)
        {
          if (*svg_info->text != '\0')
            {
              char
                *text;

              SVGStripString(MagickTrue,svg_info->text);
              text=EscapeString(svg_info->text,'\"');
              (void) FormatLocaleFile(svg_info->file,"text %g,%g \"%s\"\n",
                svg_info->text_offset.x,svg_info->text_offset.y,text);
              text=DestroyString(text);
              *svg_info->text='\0';
            }
          PushGraphicContext(id);
          break;
        }
      break;
    }
    case 'U':
    case 'u':
    {
      if (LocaleCompare((char *) name,"use") == 0)
        {
          PushGraphicContext(id);
          break;
        }
      break;
    }
    default:
      break;
  }
  if (attributes != (const xmlChar **) NULL)
    for (i=0; (attributes[i] != (const xmlChar *) NULL); i+=2)
    {
      keyword=(const char *) attributes[i];
      value=(const char *) attributes[i+1];
      (void) LogMagickEvent(CoderEvent,GetMagickModule(),
        "    %s = %s",keyword,value);
      switch (*keyword)
      {
        case 'A':
        case 'a':
        {
          if (LocaleCompare(keyword,"angle") == 0)
            {
              (void) FormatLocaleFile(svg_info->file,"angle %g\n",
                GetUserSpaceCoordinateValue(svg_info,0,value));
              break;
            }
          break;
        }
        case 'C':
        case 'c':
        {
          if (LocaleCompare(keyword,"class") == 0)
            {
              const char
                *p;

              for (p=value; ; )
              {
                GetNextToken(p,&p,MagickPathExtent,token);
                if (*token == ',')
                  GetNextToken(p,&p,MagickPathExtent,token);
                if (*token != '\0')
                  {
                    (void) FormatLocaleFile(svg_info->file,"class \"%s\"\n",
                      value);
                    break;
                  }
              }
              break;
            }
          if (LocaleCompare(keyword,"clip-path") == 0)
            {
              (void) FormatLocaleFile(svg_info->file,"clip-path \"%s\"\n",
                value);
              break;
            }
          if (LocaleCompare(keyword,"clip-rule") == 0)
            {
              (void) FormatLocaleFile(svg_info->file,"clip-rule \"%s\"\n",
                value);
              break;
            }
          if (LocaleCompare(keyword,"clipPathUnits") == 0)
            {
              (void) CloneString(&units,value);
              (void) FormatLocaleFile(svg_info->file,"clip-units \"%s\"\n",
                value);
              break;
            }
          if (LocaleCompare(keyword,"color") == 0)
            {
              (void) CloneString(&color,value);
              break;
            }
          if (LocaleCompare(keyword,"cx") == 0)
            {
              svg_info->element.cx=
                GetUserSpaceCoordinateValue(svg_info,1,value);
              break;
            }
          if (LocaleCompare(keyword,"cy") == 0)
            {
              svg_info->element.cy=
                GetUserSpaceCoordinateValue(svg_info,-1,value);
              break;
            }
          break;
        }
        case 'D':
        case 'd':
        {
          if (LocaleCompare(keyword,"d") == 0)
            {
              (void) CloneString(&svg_info->vertices,value);
              break;
            }
          if (Locale…