Re: SVG to PNG

> It is indeed libxml2 edited to work with Visual Studio and the
GraphicsMagick build.
Have you thought of recommending vcpkg to be used with libxml2 ?

Am Fr., 13. Nov. 2020 um 15:40 Uhr schrieb Pro Turm <[email protected]>:

> PS Am I missing something: the mime type of svg+xml
>
> STATICM doesnt use the mime type svg+xml, but only svg and so   BlobToImage->GetMagickInfo->OpenModule->register_fn
>  is never called
>
> A bug or what did I miss _?
>
>
> Am Fr., 13. Nov. 2020 um 11:50 Uhr schrieb Pro Turm <[email protected]>:
>
>> 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
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>>> https://lists.sourceforge.net/lists/listinfo/graphicsmagick-help
>>>
>>

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