Re: SVG to PNG

HasXML

>> 1) Are there any specific APIs concerning SVG? I couldnt grub any
specific
>> documentation page concerning svg.
>
>There are no specific APIs.  SVG is just an input file format.

The documentation (http://www.graphicsmagick.org/formats.html) says "*Requires
libxml2 <http://xmlsoft.org/> and freetype2 <http://www.freetype.org/>*".
In svg.c there is the  #if defined(HasXML)
which points to # include <libxml/...h>, which is suppose to to be the
libxml2-dev ? What is the purpose of the folder *libxml* in GM ? Is it
supposed to be used in this context?

Regards,

Am Do., 12. Nov. 2020 um 15:19 Uhr schrieb Bob Friesenhahn <
[email protected]>:

> On Thu, 12 Nov 2020, Pro Turm wrote:
>
> > Thanks. Two questions more:
> > 1) Are there any specific APIs concerning SVG? I couldnt grub any
> specific
> > documentation page concerning svg.
>
> There are no specific APIs.  SVG is just an input file format.
>
> > 2) What is the way to reject the dangerous parts of the svgs or they are
> > just ignored by GM ?
>
> Attempts to read local files are already rejected.  The FTP and HTTP
> support is marked at an "UNSTABLE" level of coder stability so setting
> the environment variable MAGICK_CODER_STABILITY to STABLE will block
> this support.
>
> If you are writing a C/C++ program which uses the GraphicsMagick
> library, then it is good to know that the header file
> magick/confirm_access.h provides a way for the program to register a
> callback function which will be called to allow the program to "bless"
> or "reject" each file, URL, or program execution access.  This
> provides total control and is also a useful way to observe what is
> going on.  The relevent API definitions are:
>
>    typedef enum
>      {
>        UndefinedConfirmAccessMode,
>        FileExecuteConfirmAccessMode, /* Path is to be opened for execution
> */
>        FileReadConfirmAccessMode,    /* Path is to be opened for read */
>        FileWriteConfirmAccessMode,   /* Path is to be opened for write */
>        URLGetFTPConfirmAccessMode,   /* ftp:// URL get */
>        URLGetFileConfirmAccessMode,  /* file:// URL get */
>        URLGetHTTPConfirmAccessMode   /* http:// URL get */
>      } ConfirmAccessMode;
>
>    typedef MagickPassFail
>    (*ConfirmAccessHandler)(const ConfirmAccessMode mode,
>                            const char *path,
>                            ExceptionInfo *exception);
>
>    extern MagickExport ConfirmAccessHandler
>    MagickSetConfirmAccessHandler(ConfirmAccessHandler handler);
>
> In addition to the above, resource limits may be set to limit resource
> consumption such as the size of a generated image, or the amount of
> allocated memory.
>
> Bob
> --
> Bob Friesenhahn
> [email protected], http://www.simplesystems.org/users/bfriesen/
> GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/
> Public Key,     http://www.simplesystems.org/users/bfriesen/public-key.txt
>
>
> _______________________________________________
> Graphicsmagick-help mailing list
> [email protected]
> https://lists.sourceforge.net/lists/listinfo/graphicsmagick-help
>

_______________________________________________
Graphicsmagick-help mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/graphicsmagick-help