C bindings

C bindings

[Esteban Lorenzano]

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Hello, 

I want to use pandoc to generate documents from a project which needs to 
interact through C. 
I have search a solution and I just found this: 
https://github.com/ShabbyX/libpandoc which is very old and seems 
unmaintained. I tried to compile it myself but, not being a haskell user, I 
failed completely. 

I wonder if there is another way to do this or, alternative, a benevolent 
soul could help me to compile that library? 

Thanks in advance!
Esteban

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Re: C bindings

[Albert Krewinkel]

Hi Esteban,

Esteban Lorenzano <estebanlm-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> writes:

> I want to use pandoc to generate documents from a project which needs to
> interact through C.
> I have search a solution and I just found this:
> https://github.com/ShabbyX/libpandoc which is very old and seems
> unmaintained. I tried to compile it myself but, not being a haskell user, I
> failed completely.
>
> I wonder if there is another way to do this or, alternative, a benevolent
> soul could help me to compile that library?

There have been many architectural changes in the 5 years since
libpandoc was last updated, and I therefore believe that it would
probably be a great amount of work to get libpandoc running again.

There is an open issue for a shared library here:
https://github.com/jgm/pandoc/issues/6611
It would be very helpful if you could comment there and describe which
pandoc features you'd need to access and control.

Cheers,
Albert

--
Albert Krewinkel
GPG: 8eed e3e2 e8c5 6f18 81fe  e836 388d c0b2 1f63 1124

Re: C bindings

[Shahbaz Youssefi]

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As far as I could figure out, it's ReaderOptions and WriterOptions that
need to be derived from Data and Typeable.

Thanks a lot!

P.S. Please let me know the commit that adds this. I'm curious to know how
you make WriterOptions derive from Data.

On Fri, Feb 27, 2015 at 12:02 AM, Matthew Pickering <
matthewtpickering-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:

> Could you perhaps give me a list of what we are currently missing and I
> can add them in. There's no reason for us not to derive them as they can be
> derived for all types..
>
> On Thu, Feb 26, 2015 at 6:56 PM, Shahbaz Youssefi <shabbyx-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> wrote:
>
>> @Matthew, so is that what's going to happen? Should I just wait for the
>> next release of pandoc and those types would be derived?
>>
>> On Tue, Feb 24, 2015 at 4:00 PM, Shahbaz Youssefi <shabbyx-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
>> wrote:
>>
>>> P.S. libpandoc derives LibPandocSettings from those types because it
>>> uses a Data.Generics.Rep.toRep function on it.
>>>
>>> On Tue, Feb 24, 2015 at 3:51 PM, Shahbaz Youssefi <shabbyx-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
>>> wrote:
>>>
>>>> I would imagine it would. I can't say I really understand what they
>>>> are, but bottom line is that [`LibPandocSettings` in the libpandoc
>>>> implementation](
>>>> https://github.com/ShabbyX/libpandoc/blob/master/src/LibPandoc/Settings.hs#L10)
>>>> contains `ReaderOptions` and `WriterOptions` and wants `deriving (Data,
>>>> Typeable)`.
>>>>
>>>> Again, I wouldn't know why `LibPandocSettings` wants to be derived from
>>>> those two types. I'll try to play around in the meantime, see if I can just
>>>> remove this requirement.
>>>>
>>>> On Tue, Feb 24, 2015 at 3:44 PM, Matthew Pickering <
>>>> matthewtpickering-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
>>>>
>>>>> Would it just be easier if we derived Data and Typeable instances in
>>>>> pandoc?
>>>>>
>>>>> On Tue, Feb 24, 2015 at 2:39 PM, Shahbaz Youssefi <shabbyx-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
>>>>> wrote:
>>>>>
>>>>>> Hi,
>>>>>>
>>>>>> I'm updating libpandoc to align with pandoc 1.13, but I'm currently
>>>>>> having a compilation issue that is beyond my understanding.
>>>>>>
>>>>>> In [LibPandoc/Instances.hs](
>>>>>> https://github.com/ShabbyX/libpandoc/blob/master/src/LibPandoc/Instances.hs),
>>>>>> there is the following code, that had been working with pandoc 1.11:
>>>>>>
>>>>>>     {-# LANGUAGE TemplateHaskell #-}
>>>>>>
>>>>>>     module LibPandoc.Instances where
>>>>>>
>>>>>>     import Data.Data
>>>>>>     import Data.DeriveTH
>>>>>>     import Text.Pandoc
>>>>>>     import Text.Pandoc.Shared
>>>>>>     import Text.Highlighting.Kate.Types
>>>>>>
>>>>>>     $( derive makeTypeable ''ReaderOptions )
>>>>>>     $( derive makeData ''ReaderOptions )
>>>>>>     $( derive makeTypeable ''WriterOptions )
>>>>>>     $( derive makeData ''WriterOptions )
>>>>>>     ...
>>>>>>
>>>>>> From what I understand, `derive makeData` does some magic, so that
>>>>>> later one could say `deriving (Data)` for a type that contains
>>>>>> `ReaderOptions` and `WriterOptions`.  With newer pandoc, it seems that some
>>>>>> types were added.  With `TrackChanges` used in `ReaderOptions`, I can add
>>>>>> similar `derive makeTypeable/makeData` lines and everything is ok.  With
>>>>>> `MediaBag` used in `WriterOptions` however, I can't do this.
>>>>>>
>>>>>> Without `derive makeData` for `MediaBag`, I get the following error
>>>>>> for `$( derive makeData WriterOptions )`:
>>>>>>
>>>>>>     No instance for (Data MediaBag) arising from a use of `k'
>>>>>>     Possible fix: add an instance declaration for (Data MediaBag)
>>>>>>     In the expression:
>>>>>>         ... A VERY LONG EXPRESSION WITH A LOT OF `k` INFIX CALLS ...
>>>>>>
>>>>>> If I add `$( derive makeData MediaBag)` before, I get this error on
>>>>>> it:
>>>>>>
>>>>>>     Not in scope: data constructor `MediaBag'
>>>>>>
>>>>>> I have `import Text.Pandoc.MediaBag`.
>>>>>>
>>>>>> From what I could make out, the reason is probably that others, such
>>>>>> as `TrackChanges` are defined with the `data` keyword, but `MediaBag` is
>>>>>> defined with the `newtype` keyword.  Is that so? How then, can I make `$(
>>>>>> derive makeData ''MediaBag)` work? If not possible, how can I make `$(
>>>>>> derive makeData ''WriterOptions )` work?
>>>>>>
>>>>>> Thanks for the help,
>>>>>> Shahbaz
>>>>>>
>>>>>> On Sunday, June 30, 2013 at 8:30:37 PM UTC+2, fiddlosopher wrote:
>>>>>>>
>>>>>>> Thanks for doing this.  I've updated pandoc-extras.
>>>>>>>
>>>>>>> +++ Shahbaz Youssefi [Jun 30 13 13:04 ]:
>>>>>>> >    Hi again,
>>>>>>> >    I updated libpandoc (for C bindings) to the current version of
>>>>>>> pandoc
>>>>>>> >    and made some improvements. I sent a pull request to toyvo, but
>>>>>>> it has
>>>>>>> >    been left unanswered (he's probably not so active on github).
>>>>>>> In the
>>>>>>> >    meantime, you could
>>>>>>> >    [refer]([1]https://github.com/jgm/pandoc/wiki/Pandoc-Extras)
>>>>>>> to my fork
>>>>>>> >    at:
>>>>>>> >    [2]https://github.com/ShabbyX/libpandoc
>>>>>>> >    Have a nice day,
>>>>>>> >    Shahbaz
>>>>>>> >
>>>>>>>
>>>>>>  --
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>>>>>> .
>>>>>> For more options, visit https://groups.google.com/d/optout.
>>>>>>
>>>>>
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>>>>> <https://groups.google.com/d/msgid/pandoc-discuss/CALuQ0m_3c63CN4VLEqMM953bxi%3Dmou4M7%2Brukbdo9H1%3D7em7sQ%40mail.gmail.com?utm_medium=email&utm_source=footer>
>>>>> .
>>>>>
>>>>> For more options, visit https://groups.google.com/d/optout.
>>>>>
>>>>
>>>>
>>>
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>>
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Re: C bindings

[Matthew Pickering]

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Could you perhaps give me a list of what we are currently missing and I can
add them in. There's no reason for us not to derive them as they can be
derived for all types..

On Thu, Feb 26, 2015 at 6:56 PM, Shahbaz Youssefi <shabbyx-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:

> @Matthew, so is that what's going to happen? Should I just wait for the
> next release of pandoc and those types would be derived?
>
> On Tue, Feb 24, 2015 at 4:00 PM, Shahbaz Youssefi <shabbyx-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> wrote:
>
>> P.S. libpandoc derives LibPandocSettings from those types because it uses
>> a Data.Generics.Rep.toRep function on it.
>>
>> On Tue, Feb 24, 2015 at 3:51 PM, Shahbaz Youssefi <shabbyx-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
>> wrote:
>>
>>> I would imagine it would. I can't say I really understand what they are,
>>> but bottom line is that [`LibPandocSettings` in the libpandoc
>>> implementation](
>>> https://github.com/ShabbyX/libpandoc/blob/master/src/LibPandoc/Settings.hs#L10)
>>> contains `ReaderOptions` and `WriterOptions` and wants `deriving (Data,
>>> Typeable)`.
>>>
>>> Again, I wouldn't know why `LibPandocSettings` wants to be derived from
>>> those two types. I'll try to play around in the meantime, see if I can just
>>> remove this requirement.
>>>
>>> On Tue, Feb 24, 2015 at 3:44 PM, Matthew Pickering <
>>> matthewtpickering-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
>>>
>>>> Would it just be easier if we derived Data and Typeable instances in
>>>> pandoc?
>>>>
>>>> On Tue, Feb 24, 2015 at 2:39 PM, Shahbaz Youssefi <shabbyx-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
>>>> wrote:
>>>>
>>>>> Hi,
>>>>>
>>>>> I'm updating libpandoc to align with pandoc 1.13, but I'm currently
>>>>> having a compilation issue that is beyond my understanding.
>>>>>
>>>>> In [LibPandoc/Instances.hs](
>>>>> https://github.com/ShabbyX/libpandoc/blob/master/src/LibPandoc/Instances.hs),
>>>>> there is the following code, that had been working with pandoc 1.11:
>>>>>
>>>>>     {-# LANGUAGE TemplateHaskell #-}
>>>>>
>>>>>     module LibPandoc.Instances where
>>>>>
>>>>>     import Data.Data
>>>>>     import Data.DeriveTH
>>>>>     import Text.Pandoc
>>>>>     import Text.Pandoc.Shared
>>>>>     import Text.Highlighting.Kate.Types
>>>>>
>>>>>     $( derive makeTypeable ''ReaderOptions )
>>>>>     $( derive makeData ''ReaderOptions )
>>>>>     $( derive makeTypeable ''WriterOptions )
>>>>>     $( derive makeData ''WriterOptions )
>>>>>     ...
>>>>>
>>>>> From what I understand, `derive makeData` does some magic, so that
>>>>> later one could say `deriving (Data)` for a type that contains
>>>>> `ReaderOptions` and `WriterOptions`.  With newer pandoc, it seems that some
>>>>> types were added.  With `TrackChanges` used in `ReaderOptions`, I can add
>>>>> similar `derive makeTypeable/makeData` lines and everything is ok.  With
>>>>> `MediaBag` used in `WriterOptions` however, I can't do this.
>>>>>
>>>>> Without `derive makeData` for `MediaBag`, I get the following error
>>>>> for `$( derive makeData WriterOptions )`:
>>>>>
>>>>>     No instance for (Data MediaBag) arising from a use of `k'
>>>>>     Possible fix: add an instance declaration for (Data MediaBag)
>>>>>     In the expression:
>>>>>         ... A VERY LONG EXPRESSION WITH A LOT OF `k` INFIX CALLS ...
>>>>>
>>>>> If I add `$( derive makeData MediaBag)` before, I get this error on it:
>>>>>
>>>>>     Not in scope: data constructor `MediaBag'
>>>>>
>>>>> I have `import Text.Pandoc.MediaBag`.
>>>>>
>>>>> From what I could make out, the reason is probably that others, such
>>>>> as `TrackChanges` are defined with the `data` keyword, but `MediaBag` is
>>>>> defined with the `newtype` keyword.  Is that so? How then, can I make `$(
>>>>> derive makeData ''MediaBag)` work? If not possible, how can I make `$(
>>>>> derive makeData ''WriterOptions )` work?
>>>>>
>>>>> Thanks for the help,
>>>>> Shahbaz
>>>>>
>>>>> On Sunday, June 30, 2013 at 8:30:37 PM UTC+2, fiddlosopher wrote:
>>>>>>
>>>>>> Thanks for doing this.  I've updated pandoc-extras.
>>>>>>
>>>>>> +++ Shahbaz Youssefi [Jun 30 13 13:04 ]:
>>>>>> >    Hi again,
>>>>>> >    I updated libpandoc (for C bindings) to the current version of
>>>>>> pandoc
>>>>>> >    and made some improvements. I sent a pull request to toyvo, but
>>>>>> it has
>>>>>> >    been left unanswered (he's probably not so active on github). In
>>>>>> the
>>>>>> >    meantime, you could
>>>>>> >    [refer]([1]https://github.com/jgm/pandoc/wiki/Pandoc-Extras) to
>>>>>> my fork
>>>>>> >    at:
>>>>>> >    [2]https://github.com/ShabbyX/libpandoc
>>>>>> >    Have a nice day,
>>>>>> >    Shahbaz
>>>>>> >
>>>>>>
>>>>>  --
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>>>>> Groups "pandoc-discuss" group.
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>>>>> .
>>>>> For more options, visit https://groups.google.com/d/optout.
>>>>>
>>>>
>>>>  --
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>>>> .
>>>>
>>>> For more options, visit https://groups.google.com/d/optout.
>>>>
>>>
>>>
>>
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Re: C bindings

[Shahbaz Youssefi]

[-- Attachment #1: Type: text/plain, Size: 6456 bytes --]

@Matthew, so is that what's going to happen? Should I just wait for the
next release of pandoc and those types would be derived?

On Tue, Feb 24, 2015 at 4:00 PM, Shahbaz Youssefi <shabbyx-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:

> P.S. libpandoc derives LibPandocSettings from those types because it uses
> a Data.Generics.Rep.toRep function on it.
>
> On Tue, Feb 24, 2015 at 3:51 PM, Shahbaz Youssefi <shabbyx-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> wrote:
>
>> I would imagine it would. I can't say I really understand what they are,
>> but bottom line is that [`LibPandocSettings` in the libpandoc
>> implementation](
>> https://github.com/ShabbyX/libpandoc/blob/master/src/LibPandoc/Settings.hs#L10)
>> contains `ReaderOptions` and `WriterOptions` and wants `deriving (Data,
>> Typeable)`.
>>
>> Again, I wouldn't know why `LibPandocSettings` wants to be derived from
>> those two types. I'll try to play around in the meantime, see if I can just
>> remove this requirement.
>>
>> On Tue, Feb 24, 2015 at 3:44 PM, Matthew Pickering <
>> matthewtpickering-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
>>
>>> Would it just be easier if we derived Data and Typeable instances in
>>> pandoc?
>>>
>>> On Tue, Feb 24, 2015 at 2:39 PM, Shahbaz Youssefi <shabbyx-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
>>> wrote:
>>>
>>>> Hi,
>>>>
>>>> I'm updating libpandoc to align with pandoc 1.13, but I'm currently
>>>> having a compilation issue that is beyond my understanding.
>>>>
>>>> In [LibPandoc/Instances.hs](
>>>> https://github.com/ShabbyX/libpandoc/blob/master/src/LibPandoc/Instances.hs),
>>>> there is the following code, that had been working with pandoc 1.11:
>>>>
>>>>     {-# LANGUAGE TemplateHaskell #-}
>>>>
>>>>     module LibPandoc.Instances where
>>>>
>>>>     import Data.Data
>>>>     import Data.DeriveTH
>>>>     import Text.Pandoc
>>>>     import Text.Pandoc.Shared
>>>>     import Text.Highlighting.Kate.Types
>>>>
>>>>     $( derive makeTypeable ''ReaderOptions )
>>>>     $( derive makeData ''ReaderOptions )
>>>>     $( derive makeTypeable ''WriterOptions )
>>>>     $( derive makeData ''WriterOptions )
>>>>     ...
>>>>
>>>> From what I understand, `derive makeData` does some magic, so that
>>>> later one could say `deriving (Data)` for a type that contains
>>>> `ReaderOptions` and `WriterOptions`.  With newer pandoc, it seems that some
>>>> types were added.  With `TrackChanges` used in `ReaderOptions`, I can add
>>>> similar `derive makeTypeable/makeData` lines and everything is ok.  With
>>>> `MediaBag` used in `WriterOptions` however, I can't do this.
>>>>
>>>> Without `derive makeData` for `MediaBag`, I get the following error for
>>>> `$( derive makeData WriterOptions )`:
>>>>
>>>>     No instance for (Data MediaBag) arising from a use of `k'
>>>>     Possible fix: add an instance declaration for (Data MediaBag)
>>>>     In the expression:
>>>>         ... A VERY LONG EXPRESSION WITH A LOT OF `k` INFIX CALLS ...
>>>>
>>>> If I add `$( derive makeData MediaBag)` before, I get this error on it:
>>>>
>>>>     Not in scope: data constructor `MediaBag'
>>>>
>>>> I have `import Text.Pandoc.MediaBag`.
>>>>
>>>> From what I could make out, the reason is probably that others, such as
>>>> `TrackChanges` are defined with the `data` keyword, but `MediaBag` is
>>>> defined with the `newtype` keyword.  Is that so? How then, can I make `$(
>>>> derive makeData ''MediaBag)` work? If not possible, how can I make `$(
>>>> derive makeData ''WriterOptions )` work?
>>>>
>>>> Thanks for the help,
>>>> Shahbaz
>>>>
>>>> On Sunday, June 30, 2013 at 8:30:37 PM UTC+2, fiddlosopher wrote:
>>>>>
>>>>> Thanks for doing this.  I've updated pandoc-extras.
>>>>>
>>>>> +++ Shahbaz Youssefi [Jun 30 13 13:04 ]:
>>>>> >    Hi again,
>>>>> >    I updated libpandoc (for C bindings) to the current version of
>>>>> pandoc
>>>>> >    and made some improvements. I sent a pull request to toyvo, but
>>>>> it has
>>>>> >    been left unanswered (he's probably not so active on github). In
>>>>> the
>>>>> >    meantime, you could
>>>>> >    [refer]([1]https://github.com/jgm/pandoc/wiki/Pandoc-Extras) to
>>>>> my fork
>>>>> >    at:
>>>>> >    [2]https://github.com/ShabbyX/libpandoc
>>>>> >    Have a nice day,
>>>>> >    Shahbaz
>>>>> >
>>>>>
>>>>  --
>>>> You received this message because you are subscribed to the Google
>>>> Groups "pandoc-discuss" group.
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>>>>
>>>
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Re: C bindings

[Shahbaz Youssefi]

[-- Attachment #1: Type: text/plain, Size: 6082 bytes --]

P.S. libpandoc derives LibPandocSettings from those types because it uses a
Data.Generics.Rep.toRep function on it.

On Tue, Feb 24, 2015 at 3:51 PM, Shahbaz Youssefi <shabbyx-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:

> I would imagine it would. I can't say I really understand what they are,
> but bottom line is that [`LibPandocSettings` in the libpandoc
> implementation](
> https://github.com/ShabbyX/libpandoc/blob/master/src/LibPandoc/Settings.hs#L10)
> contains `ReaderOptions` and `WriterOptions` and wants `deriving (Data,
> Typeable)`.
>
> Again, I wouldn't know why `LibPandocSettings` wants to be derived from
> those two types. I'll try to play around in the meantime, see if I can just
> remove this requirement.
>
> On Tue, Feb 24, 2015 at 3:44 PM, Matthew Pickering <
> matthewtpickering-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
>
>> Would it just be easier if we derived Data and Typeable instances in
>> pandoc?
>>
>> On Tue, Feb 24, 2015 at 2:39 PM, Shahbaz Youssefi <shabbyx-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
>> wrote:
>>
>>> Hi,
>>>
>>> I'm updating libpandoc to align with pandoc 1.13, but I'm currently
>>> having a compilation issue that is beyond my understanding.
>>>
>>> In [LibPandoc/Instances.hs](
>>> https://github.com/ShabbyX/libpandoc/blob/master/src/LibPandoc/Instances.hs),
>>> there is the following code, that had been working with pandoc 1.11:
>>>
>>>     {-# LANGUAGE TemplateHaskell #-}
>>>
>>>     module LibPandoc.Instances where
>>>
>>>     import Data.Data
>>>     import Data.DeriveTH
>>>     import Text.Pandoc
>>>     import Text.Pandoc.Shared
>>>     import Text.Highlighting.Kate.Types
>>>
>>>     $( derive makeTypeable ''ReaderOptions )
>>>     $( derive makeData ''ReaderOptions )
>>>     $( derive makeTypeable ''WriterOptions )
>>>     $( derive makeData ''WriterOptions )
>>>     ...
>>>
>>> From what I understand, `derive makeData` does some magic, so that later
>>> one could say `deriving (Data)` for a type that contains `ReaderOptions`
>>> and `WriterOptions`.  With newer pandoc, it seems that some types were
>>> added.  With `TrackChanges` used in `ReaderOptions`, I can add similar
>>> `derive makeTypeable/makeData` lines and everything is ok.  With `MediaBag`
>>> used in `WriterOptions` however, I can't do this.
>>>
>>> Without `derive makeData` for `MediaBag`, I get the following error for
>>> `$( derive makeData WriterOptions )`:
>>>
>>>     No instance for (Data MediaBag) arising from a use of `k'
>>>     Possible fix: add an instance declaration for (Data MediaBag)
>>>     In the expression:
>>>         ... A VERY LONG EXPRESSION WITH A LOT OF `k` INFIX CALLS ...
>>>
>>> If I add `$( derive makeData MediaBag)` before, I get this error on it:
>>>
>>>     Not in scope: data constructor `MediaBag'
>>>
>>> I have `import Text.Pandoc.MediaBag`.
>>>
>>> From what I could make out, the reason is probably that others, such as
>>> `TrackChanges` are defined with the `data` keyword, but `MediaBag` is
>>> defined with the `newtype` keyword.  Is that so? How then, can I make `$(
>>> derive makeData ''MediaBag)` work? If not possible, how can I make `$(
>>> derive makeData ''WriterOptions )` work?
>>>
>>> Thanks for the help,
>>> Shahbaz
>>>
>>> On Sunday, June 30, 2013 at 8:30:37 PM UTC+2, fiddlosopher wrote:
>>>>
>>>> Thanks for doing this.  I've updated pandoc-extras.
>>>>
>>>> +++ Shahbaz Youssefi [Jun 30 13 13:04 ]:
>>>> >    Hi again,
>>>> >    I updated libpandoc (for C bindings) to the current version of
>>>> pandoc
>>>> >    and made some improvements. I sent a pull request to toyvo, but it
>>>> has
>>>> >    been left unanswered (he's probably not so active on github). In
>>>> the
>>>> >    meantime, you could
>>>> >    [refer]([1]https://github.com/jgm/pandoc/wiki/Pandoc-Extras) to
>>>> my fork
>>>> >    at:
>>>> >    [2]https://github.com/ShabbyX/libpandoc
>>>> >    Have a nice day,
>>>> >    Shahbaz
>>>> >
>>>>
>>>  --
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>>
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Re: C bindings

[Shahbaz Youssefi]

[-- Attachment #1: Type: text/plain, Size: 5724 bytes --]

I would imagine it would. I can't say I really understand what they are,
but bottom line is that [`LibPandocSettings` in the libpandoc
implementation](
https://github.com/ShabbyX/libpandoc/blob/master/src/LibPandoc/Settings.hs#L10)
contains `ReaderOptions` and `WriterOptions` and wants `deriving (Data,
Typeable)`.

Again, I wouldn't know why `LibPandocSettings` wants to be derived from
those two types. I'll try to play around in the meantime, see if I can just
remove this requirement.

On Tue, Feb 24, 2015 at 3:44 PM, Matthew Pickering <
matthewtpickering-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:

> Would it just be easier if we derived Data and Typeable instances in
> pandoc?
>
> On Tue, Feb 24, 2015 at 2:39 PM, Shahbaz Youssefi <shabbyx-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> wrote:
>
>> Hi,
>>
>> I'm updating libpandoc to align with pandoc 1.13, but I'm currently
>> having a compilation issue that is beyond my understanding.
>>
>> In [LibPandoc/Instances.hs](
>> https://github.com/ShabbyX/libpandoc/blob/master/src/LibPandoc/Instances.hs),
>> there is the following code, that had been working with pandoc 1.11:
>>
>>     {-# LANGUAGE TemplateHaskell #-}
>>
>>     module LibPandoc.Instances where
>>
>>     import Data.Data
>>     import Data.DeriveTH
>>     import Text.Pandoc
>>     import Text.Pandoc.Shared
>>     import Text.Highlighting.Kate.Types
>>
>>     $( derive makeTypeable ''ReaderOptions )
>>     $( derive makeData ''ReaderOptions )
>>     $( derive makeTypeable ''WriterOptions )
>>     $( derive makeData ''WriterOptions )
>>     ...
>>
>> From what I understand, `derive makeData` does some magic, so that later
>> one could say `deriving (Data)` for a type that contains `ReaderOptions`
>> and `WriterOptions`.  With newer pandoc, it seems that some types were
>> added.  With `TrackChanges` used in `ReaderOptions`, I can add similar
>> `derive makeTypeable/makeData` lines and everything is ok.  With `MediaBag`
>> used in `WriterOptions` however, I can't do this.
>>
>> Without `derive makeData` for `MediaBag`, I get the following error for
>> `$( derive makeData WriterOptions )`:
>>
>>     No instance for (Data MediaBag) arising from a use of `k'
>>     Possible fix: add an instance declaration for (Data MediaBag)
>>     In the expression:
>>         ... A VERY LONG EXPRESSION WITH A LOT OF `k` INFIX CALLS ...
>>
>> If I add `$( derive makeData MediaBag)` before, I get this error on it:
>>
>>     Not in scope: data constructor `MediaBag'
>>
>> I have `import Text.Pandoc.MediaBag`.
>>
>> From what I could make out, the reason is probably that others, such as
>> `TrackChanges` are defined with the `data` keyword, but `MediaBag` is
>> defined with the `newtype` keyword.  Is that so? How then, can I make `$(
>> derive makeData ''MediaBag)` work? If not possible, how can I make `$(
>> derive makeData ''WriterOptions )` work?
>>
>> Thanks for the help,
>> Shahbaz
>>
>> On Sunday, June 30, 2013 at 8:30:37 PM UTC+2, fiddlosopher wrote:
>>>
>>> Thanks for doing this.  I've updated pandoc-extras.
>>>
>>> +++ Shahbaz Youssefi [Jun 30 13 13:04 ]:
>>> >    Hi again,
>>> >    I updated libpandoc (for C bindings) to the current version of
>>> pandoc
>>> >    and made some improvements. I sent a pull request to toyvo, but it
>>> has
>>> >    been left unanswered (he's probably not so active on github). In
>>> the
>>> >    meantime, you could
>>> >    [refer]([1]https://github.com/jgm/pandoc/wiki/Pandoc-Extras) to my
>>> fork
>>> >    at:
>>> >    [2]https://github.com/ShabbyX/libpandoc
>>> >    Have a nice day,
>>> >    Shahbaz
>>> >
>>>
>>  --
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>> "pandoc-discuss" group.
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>> email to pandoc-discuss+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
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>> .
>> For more options, visit https://groups.google.com/d/optout.
>>
>
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Re: C bindings

[Matthew Pickering]

[-- Attachment #1: Type: text/plain, Size: 4234 bytes --]

Would it just be easier if we derived Data and Typeable instances in pandoc?

On Tue, Feb 24, 2015 at 2:39 PM, Shahbaz Youssefi <shabbyx-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:

> Hi,
>
> I'm updating libpandoc to align with pandoc 1.13, but I'm currently having
> a compilation issue that is beyond my understanding.
>
> In [LibPandoc/Instances.hs](
> https://github.com/ShabbyX/libpandoc/blob/master/src/LibPandoc/Instances.hs),
> there is the following code, that had been working with pandoc 1.11:
>
>     {-# LANGUAGE TemplateHaskell #-}
>
>     module LibPandoc.Instances where
>
>     import Data.Data
>     import Data.DeriveTH
>     import Text.Pandoc
>     import Text.Pandoc.Shared
>     import Text.Highlighting.Kate.Types
>
>     $( derive makeTypeable ''ReaderOptions )
>     $( derive makeData ''ReaderOptions )
>     $( derive makeTypeable ''WriterOptions )
>     $( derive makeData ''WriterOptions )
>     ...
>
> From what I understand, `derive makeData` does some magic, so that later
> one could say `deriving (Data)` for a type that contains `ReaderOptions`
> and `WriterOptions`.  With newer pandoc, it seems that some types were
> added.  With `TrackChanges` used in `ReaderOptions`, I can add similar
> `derive makeTypeable/makeData` lines and everything is ok.  With `MediaBag`
> used in `WriterOptions` however, I can't do this.
>
> Without `derive makeData` for `MediaBag`, I get the following error for
> `$( derive makeData WriterOptions )`:
>
>     No instance for (Data MediaBag) arising from a use of `k'
>     Possible fix: add an instance declaration for (Data MediaBag)
>     In the expression:
>         ... A VERY LONG EXPRESSION WITH A LOT OF `k` INFIX CALLS ...
>
> If I add `$( derive makeData MediaBag)` before, I get this error on it:
>
>     Not in scope: data constructor `MediaBag'
>
> I have `import Text.Pandoc.MediaBag`.
>
> From what I could make out, the reason is probably that others, such as
> `TrackChanges` are defined with the `data` keyword, but `MediaBag` is
> defined with the `newtype` keyword.  Is that so? How then, can I make `$(
> derive makeData ''MediaBag)` work? If not possible, how can I make `$(
> derive makeData ''WriterOptions )` work?
>
> Thanks for the help,
> Shahbaz
>
> On Sunday, June 30, 2013 at 8:30:37 PM UTC+2, fiddlosopher wrote:
>>
>> Thanks for doing this.  I've updated pandoc-extras.
>>
>> +++ Shahbaz Youssefi [Jun 30 13 13:04 ]:
>> >    Hi again,
>> >    I updated libpandoc (for C bindings) to the current version of
>> pandoc
>> >    and made some improvements. I sent a pull request to toyvo, but it
>> has
>> >    been left unanswered (he's probably not so active on github). In the
>> >    meantime, you could
>> >    [refer]([1]https://github.com/jgm/pandoc/wiki/Pandoc-Extras) to my
>> fork
>> >    at:
>> >    [2]https://github.com/ShabbyX/libpandoc
>> >    Have a nice day,
>> >    Shahbaz
>> >
>>
>  --
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> .
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>

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Re: C bindings

[Shahbaz Youssefi]

[-- Attachment #1.1: Type: text/plain, Size: 3200 bytes --]

Hi,

I'm updating libpandoc to align with pandoc 1.13, but I'm currently having 
a compilation issue that is beyond my understanding.

In 
[LibPandoc/Instances.hs](https://github.com/ShabbyX/libpandoc/blob/master/src/LibPandoc/Instances.hs), 
there is the following code, that had been working with pandoc 1.11:

    {-# LANGUAGE TemplateHaskell #-}

    module LibPandoc.Instances where

    import Data.Data
    import Data.DeriveTH
    import Text.Pandoc
    import Text.Pandoc.Shared
    import Text.Highlighting.Kate.Types

    $( derive makeTypeable ''ReaderOptions )
    $( derive makeData ''ReaderOptions )
    $( derive makeTypeable ''WriterOptions )
    $( derive makeData ''WriterOptions )
    ...

From what I understand, `derive makeData` does some magic, so that later 
one could say `deriving (Data)` for a type that contains `ReaderOptions` 
and `WriterOptions`.  With newer pandoc, it seems that some types were 
added.  With `TrackChanges` used in `ReaderOptions`, I can add similar 
`derive makeTypeable/makeData` lines and everything is ok.  With `MediaBag` 
used in `WriterOptions` however, I can't do this.

Without `derive makeData` for `MediaBag`, I get the following error for `$( 
derive makeData WriterOptions )`:

    No instance for (Data MediaBag) arising from a use of `k'
    Possible fix: add an instance declaration for (Data MediaBag)
    In the expression:
        ... A VERY LONG EXPRESSION WITH A LOT OF `k` INFIX CALLS ...

If I add `$( derive makeData MediaBag)` before, I get this error on it:

    Not in scope: data constructor `MediaBag'

I have `import Text.Pandoc.MediaBag`.

From what I could make out, the reason is probably that others, such as 
`TrackChanges` are defined with the `data` keyword, but `MediaBag` is 
defined with the `newtype` keyword.  Is that so? How then, can I make `$( 
derive makeData ''MediaBag)` work? If not possible, how can I make `$( 
derive makeData ''WriterOptions )` work?

Thanks for the help,
Shahbaz

On Sunday, June 30, 2013 at 8:30:37 PM UTC+2, fiddlosopher wrote:
>
> Thanks for doing this.  I've updated pandoc-extras. 
>
> +++ Shahbaz Youssefi [Jun 30 13 13:04 ]: 
> >    Hi again, 
> >    I updated libpandoc (for C bindings) to the current version of pandoc 
> >    and made some improvements. I sent a pull request to toyvo, but it 
> has 
> >    been left unanswered (he's probably not so active on github). In the 
> >    meantime, you could 
> >    [refer]([1]https://github.com/jgm/pandoc/wiki/Pandoc-Extras) to my 
> fork 
> >    at: 
> >    [2]https://github.com/ShabbyX/libpandoc 
> >    Have a nice day, 
> >    Shahbaz 
> > 
>

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[-- Attachment #1.2: Type: text/html, Size: 5247 bytes --]

Re: C bindings

[John MacFarlane]

Thanks for doing this.  I've updated pandoc-extras.

+++ Shahbaz Youssefi [Jun 30 13 13:04 ]:
>    Hi again,
>    I updated libpandoc (for C bindings) to the current version of pandoc
>    and made some improvements. I sent a pull request to toyvo, but it has
>    been left unanswered (he's probably not so active on github). In the
>    meantime, you could
>    [refer]([1]https://github.com/jgm/pandoc/wiki/Pandoc-Extras) to my fork
>    at:
>    [2]https://github.com/ShabbyX/libpandoc
>    Have a nice day,
>    Shahbaz
> 
>    On Fri, Jun 28, 2013 at 2:12 PM, Shahbaz Youssefi
>    <[3]shabbyx-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> 
>    It seems like that was an error in the package itself. This
>    [question]([4]http://stackoverflow.com/q/17361047/912144) and its
>    answer have the solution.
> 
>    On Fri, Jun 28, 2013 at 11:23 AM, Shahbaz Youssefi
>    <[5]shabbyx-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> 
>    Thank you for the pointer. I am in the process of updating libpandoc to
>    work with pandoc 1.11 (actually above 1.10) where I came to a build
>    issue that I'm not sure how to resolve.
>    Loading package regex-pcre-builtin-0.94.4.6.8.31 ... linking ... ghc:
>    /home/XXXX/.cabal/lib/regex-pcre-builtin-0.94.4.6.8.31/ghc-7.4.1/HSrege
>    x-pcre-builtin-0.94.4.6.8.31.o: unknown symbol `utf8_table4'
>    ghc: unable to load package `regex-pcre-builtin-0.94.4.6.8.31'
>    Trying to reinstall regex-pcre-builtin with cabal gives a warning that
>    it may break pandoc.
>    The offending source code is this:
>    {-# LANGUAGE TemplateHaskell #-}
>    module LibPandoc.Instances where
>    import Data.Data
>    import Data.DeriveTH
>    import Text.Pandoc
>    import Text.Pandoc.Shared
>    $( derive makeTypeable ''ReaderOptions )
>    $( derive makeData ''ReaderOptions )
>    $( derive makeTypeable ''WriterOptions )
>    $( derive makeData ''WriterOptions )
>    $( derive makeTypeable ''HTMLMathMethod )
>    $( derive makeData ''HTMLMathMethod )
>    $( derive makeTypeable ''ObfuscationMethod )
>    $( derive makeData ''ObfuscationMethod )
>    Can you see anything wrong there?
>    Thank you again for the help,
>    Shahbaz
>    On Wed, Jun 26, 2013 at 7:14 PM, John MacFarlane
>    <[6]fiddlosopher-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> 
>      There is
>      [7]https://github.com/toyvo/libpandoc
>      but I'm not sure when it was last updated.
>      +++ Shahbaz Youssefi [Jun 26 13 09:32 ]:
> 
>    > Hi,
>    > I just came to know pandoc and it seems wonderful and I'm planning on
>    > using it in a project of mine. My project however is written in C.
>    > Given that making C bindings is a common operation for many languages
>    > (and I saw that for Haskell it too is possible), I was wondering if
>    > pandoc has any C bindings? If not, would it be a possibility to make
>    > those bindings?
>    > I know very basic Haskell, but I might be able to make the bindings
>    > myself with some struggle, if the developers are interested..
>    > Thank you,
>    > Shahbaz
>    >
>    > --
>    > You received this message because you are subscribed to the Google
>    > Groups "pandoc-discuss" group.
>    > To unsubscribe from this group and stop receiving emails from it,
>    send
>    > an email to [8]pandoc-discuss+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
>    > To post to this group, send email to
>    [9]pandoc-discuss-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
>    > To view this discussion on the web visit
> 
>      >
>      [1][10]https://groups.google.com/d/msgid/pandoc-discuss/cc84a902-1bc
>      5-433f-
>      > b176-ce71dd8e3acd%[11]40googlegroups.com.
>      > For more options, visit
>      [2][12]https://groups.google.com/groups/opt_out.
>      >
>      > References
>      >
>      > 1.
>      [13]https://groups.google.com/d/msgid/pandoc-discuss/cc84a902-1bc5-4
>      33f-b176-ce71dd8e3acd%40googlegroups.com
>      > 2. [14]https://groups.google.com/groups/opt_out
> 
>    --
>    You received this message because you are subscribed to the Google
>    Groups "pandoc-discuss" group.
>    To unsubscribe from this group and stop receiving emails from it, send
>    an email to [15]pandoc-discuss+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
>    To post to this group, send email to
>    [16]pandoc-discuss-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
> 
>      To view this discussion on the web visit
>      [17]https://groups.google.com/d/msgid/pandoc-discuss/20130626171432.
>      GA1663%40protagoras.phil.berkeley.edu.
> 
>    For more options, visit [18]https://groups.google.com/groups/opt_out.
> 
>    --
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>    Groups "pandoc-discuss" group.
>    To unsubscribe from this group and stop receiving emails from it, send
>    an email to pandoc-discuss+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
>    To post to this group, send email to pandoc-discuss-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
>    To view this discussion on the web visit
>    [19]https://groups.google.com/d/msgid/pandoc-discuss/CALeOzZ_BcVwuYTJwp
>    QBSOhd9FMbU%3DNu_F4%3DTtDeHLfNc2h3LYQ%40mail.gmail.com.
>    For more options, visit [20]https://groups.google.com/groups/opt_out.
> 
> References
> 
>    1. https://github.com/jgm/pandoc/wiki/Pandoc-Extras
>    2. https://github.com/ShabbyX/libpandoc
>    3. mailto:shabbyx-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
>    4. http://stackoverflow.com/q/17361047/912144
>    5. mailto:shabbyx-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
>    6. mailto:fiddlosopher-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
>    7. https://github.com/toyvo/libpandoc
>    8. mailto:pandoc-discuss%2Bunsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
>    9. mailto:pandoc-discuss-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
>   10. https://groups.google.com/d/msgid/pandoc-discuss/cc84a902-1bc5-433f-
>   11. http://40googlegroups.com/
>   12. https://groups.google.com/groups/opt_out
>   13. https://groups.google.com/d/msgid/pandoc-discuss/cc84a902-1bc5-433f-b176-ce71dd8e3acd%40googlegroups.com
>   14. https://groups.google.com/groups/opt_out
>   15. mailto:pandoc-discuss%2Bunsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
>   16. mailto:pandoc-discuss-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
>   17. https://groups.google.com/d/msgid/pandoc-discuss/20130626171432.GA1663%40protagoras.phil.berkeley.edu
>   18. https://groups.google.com/groups/opt_out
>   19. https://groups.google.com/d/msgid/pandoc-discuss/CALeOzZ_BcVwuYTJwpQBSOhd9FMbU%3DNu_F4%3DTtDeHLfNc2h3LYQ%40mail.gmail.com
>   20. https://groups.google.com/groups/opt_out

Re: C bindings

[Shahbaz Youssefi]

[-- Attachment #1: Type: text/plain, Size: 5002 bytes --]

Hi again,

I updated libpandoc (for C bindings) to the current version of pandoc and
made some improvements. I sent a pull request to toyvo, but it has been
left unanswered (he's probably not so active on github). In the meantime,
you could [refer](https://github.com/jgm/pandoc/wiki/Pandoc-Extras) to my
fork at:

https://github.com/ShabbyX/libpandoc

Have a nice day,
Shahbaz


On Fri, Jun 28, 2013 at 2:12 PM, Shahbaz Youssefi <shabbyx-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:

> It seems like that was an error in the package itself. This [question](
> http://stackoverflow.com/q/17361047/912144) and its answer have the
> solution.
>
>
> On Fri, Jun 28, 2013 at 11:23 AM, Shahbaz Youssefi <shabbyx-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>wrote:
>
>> Thank you for the pointer. I am in the process of updating libpandoc to
>> work with pandoc 1.11 (actually above 1.10) where I came to a build issue
>> that I'm not sure how to resolve.
>>
>> Loading package regex-pcre-builtin-0.94.4.6.8.31 ... linking ... ghc:
>> /home/XXXX/.cabal/lib/regex-pcre-builtin-0.94.4.6.8.31/ghc-7.4.1/HSregex-pcre-builtin-0.94.4.6.8.31.o:
>> unknown symbol `utf8_table4'
>> ghc: unable to load package `regex-pcre-builtin-0.94.4.6.8.31'
>>
>> Trying to reinstall regex-pcre-builtin with cabal gives a warning that it
>> may break pandoc.
>>
>> The offending source code is this:
>>
>> {-# LANGUAGE TemplateHaskell #-}
>>
>> module LibPandoc.Instances where
>>
>> import Data.Data
>> import Data.DeriveTH
>> import Text.Pandoc
>> import Text.Pandoc.Shared
>>
>> $( derive makeTypeable ''ReaderOptions )
>> $( derive makeData ''ReaderOptions )
>> $( derive makeTypeable ''WriterOptions )
>> $( derive makeData ''WriterOptions )
>> $( derive makeTypeable ''HTMLMathMethod )
>> $( derive makeData ''HTMLMathMethod )
>> $( derive makeTypeable ''ObfuscationMethod )
>> $( derive makeData ''ObfuscationMethod )
>>
>>  Can you see anything wrong there?
>>
>> Thank you again for the help,
>> Shahbaz
>>
>> On Wed, Jun 26, 2013 at 7:14 PM, John MacFarlane <fiddlosopher-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>wrote:
>>
>>> There is
>>> https://github.com/toyvo/libpandoc
>>> but I'm not sure when it was last updated.
>>>
>>> +++ Shahbaz Youssefi [Jun 26 13 09:32 ]:
>>> >    Hi,
>>> >    I just came to know pandoc and it seems wonderful and I'm planning
>>> on
>>> >    using it in a project of mine. My project however is written in C.
>>> >    Given that making C bindings is a common operation for many
>>> languages
>>> >    (and I saw that for Haskell it too is possible), I was wondering if
>>> >    pandoc has any C bindings? If not, would it be a possibility to make
>>> >    those bindings?
>>> >    I know very basic Haskell, but I might be able to make the bindings
>>> >    myself with some struggle, if the developers are interested..
>>> >    Thank you,
>>> >    Shahbaz
>>> >
>>> >    --
>>> >    You received this message because you are subscribed to the Google
>>> >    Groups "pandoc-discuss" group.
>>> >    To unsubscribe from this group and stop receiving emails from it,
>>> send
>>> >    an email to pandoc-discuss+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
>>> >    To post to this group, send email to
>>> pandoc-discuss-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
>>> >    To view this discussion on the web visit
>>> >    [1]
>>> https://groups.google.com/d/msgid/pandoc-discuss/cc84a902-1bc5-433f-
>>> >    b176-ce71dd8e3acd%40googlegroups.com.
>>> >    For more options, visit [2]https://groups.google.com/groups/opt_out
>>> .
>>> >
>>> > References
>>> >
>>> >    1.
>>> https://groups.google.com/d/msgid/pandoc-discuss/cc84a902-1bc5-433f-b176-ce71dd8e3acd%40googlegroups.com
>>> >    2. https://groups.google.com/groups/opt_out
>>>
>>> --
>>> You received this message because you are subscribed to the Google
>>> Groups "pandoc-discuss" group.
>>> To unsubscribe from this group and stop receiving emails from it, send
>>> an email to pandoc-discuss+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
>>> To post to this group, send email to pandoc-discuss-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
>>> To view this discussion on the web visit
>>> https://groups.google.com/d/msgid/pandoc-discuss/20130626171432.GA1663%40protagoras.phil.berkeley.edu
>>> .
>>> For more options, visit https://groups.google.com/groups/opt_out.
>>>
>>>
>>>
>>
>

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[-- Attachment #2: Type: text/html, Size: 7985 bytes --]

Re: C bindings

[Shahbaz Youssefi]

[-- Attachment #1: Type: text/plain, Size: 4387 bytes --]

It seems like that was an error in the package itself. This [question](
http://stackoverflow.com/q/17361047/912144) and its answer have the
solution.


On Fri, Jun 28, 2013 at 11:23 AM, Shahbaz Youssefi <shabbyx-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>wrote:

> Thank you for the pointer. I am in the process of updating libpandoc to
> work with pandoc 1.11 (actually above 1.10) where I came to a build issue
> that I'm not sure how to resolve.
>
> Loading package regex-pcre-builtin-0.94.4.6.8.31 ... linking ... ghc:
> /home/XXXX/.cabal/lib/regex-pcre-builtin-0.94.4.6.8.31/ghc-7.4.1/HSregex-pcre-builtin-0.94.4.6.8.31.o:
> unknown symbol `utf8_table4'
> ghc: unable to load package `regex-pcre-builtin-0.94.4.6.8.31'
>
> Trying to reinstall regex-pcre-builtin with cabal gives a warning that it
> may break pandoc.
>
> The offending source code is this:
>
> {-# LANGUAGE TemplateHaskell #-}
>
> module LibPandoc.Instances where
>
> import Data.Data
> import Data.DeriveTH
> import Text.Pandoc
> import Text.Pandoc.Shared
>
> $( derive makeTypeable ''ReaderOptions )
> $( derive makeData ''ReaderOptions )
> $( derive makeTypeable ''WriterOptions )
> $( derive makeData ''WriterOptions )
> $( derive makeTypeable ''HTMLMathMethod )
> $( derive makeData ''HTMLMathMethod )
> $( derive makeTypeable ''ObfuscationMethod )
> $( derive makeData ''ObfuscationMethod )
>
> Can you see anything wrong there?
>
> Thank you again for the help,
> Shahbaz
>
> On Wed, Jun 26, 2013 at 7:14 PM, John MacFarlane <fiddlosopher-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>wrote:
>
>> There is
>> https://github.com/toyvo/libpandoc
>> but I'm not sure when it was last updated.
>>
>> +++ Shahbaz Youssefi [Jun 26 13 09:32 ]:
>> >    Hi,
>> >    I just came to know pandoc and it seems wonderful and I'm planning on
>> >    using it in a project of mine. My project however is written in C.
>> >    Given that making C bindings is a common operation for many languages
>> >    (and I saw that for Haskell it too is possible), I was wondering if
>> >    pandoc has any C bindings? If not, would it be a possibility to make
>> >    those bindings?
>> >    I know very basic Haskell, but I might be able to make the bindings
>> >    myself with some struggle, if the developers are interested..
>> >    Thank you,
>> >    Shahbaz
>> >
>> >    --
>> >    You received this message because you are subscribed to the Google
>> >    Groups "pandoc-discuss" group.
>> >    To unsubscribe from this group and stop receiving emails from it,
>> send
>> >    an email to pandoc-discuss+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
>> >    To post to this group, send email to pandoc-discuss-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
>> .
>> >    To view this discussion on the web visit
>> >    [1]
>> https://groups.google.com/d/msgid/pandoc-discuss/cc84a902-1bc5-433f-
>> >    b176-ce71dd8e3acd%40googlegroups.com.
>> >    For more options, visit [2]https://groups.google.com/groups/opt_out.
>> >
>> > References
>> >
>> >    1.
>> https://groups.google.com/d/msgid/pandoc-discuss/cc84a902-1bc5-433f-b176-ce71dd8e3acd%40googlegroups.com
>> >    2. https://groups.google.com/groups/opt_out
>>
>> --
>> You received this message because you are subscribed to the Google Groups
>> "pandoc-discuss" group.
>> To unsubscribe from this group and stop receiving emails from it, send an
>> email to pandoc-discuss+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
>> To post to this group, send email to pandoc-discuss-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
>> To view this discussion on the web visit
>> https://groups.google.com/d/msgid/pandoc-discuss/20130626171432.GA1663%40protagoras.phil.berkeley.edu
>> .
>> For more options, visit https://groups.google.com/groups/opt_out.
>>
>>
>>
>

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[-- Attachment #2: Type: text/html, Size: 6956 bytes --]

Re: C bindings

[Shahbaz Youssefi]

[-- Attachment #1: Type: text/plain, Size: 4012 bytes --]

Thank you for the pointer. I am in the process of updating libpandoc to
work with pandoc 1.11 (actually above 1.10) where I came to a build issue
that I'm not sure how to resolve.

Loading package regex-pcre-builtin-0.94.4.6.8.31 ... linking ... ghc:
/home/XXXX/.cabal/lib/regex-pcre-builtin-0.94.4.6.8.31/ghc-7.4.1/HSregex-pcre-builtin-0.94.4.6.8.31.o:
unknown symbol `utf8_table4'
ghc: unable to load package `regex-pcre-builtin-0.94.4.6.8.31'

Trying to reinstall regex-pcre-builtin with cabal gives a warning that it
may break pandoc.

The offending source code is this:

{-# LANGUAGE TemplateHaskell #-}

module LibPandoc.Instances where

import Data.Data
import Data.DeriveTH
import Text.Pandoc
import Text.Pandoc.Shared

$( derive makeTypeable ''ReaderOptions )
$( derive makeData ''ReaderOptions )
$( derive makeTypeable ''WriterOptions )
$( derive makeData ''WriterOptions )
$( derive makeTypeable ''HTMLMathMethod )
$( derive makeData ''HTMLMathMethod )
$( derive makeTypeable ''ObfuscationMethod )
$( derive makeData ''ObfuscationMethod )

Can you see anything wrong there?

Thank you again for the help,
Shahbaz

On Wed, Jun 26, 2013 at 7:14 PM, John MacFarlane <fiddlosopher-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>wrote:

> There is
> https://github.com/toyvo/libpandoc
> but I'm not sure when it was last updated.
>
> +++ Shahbaz Youssefi [Jun 26 13 09:32 ]:
> >    Hi,
> >    I just came to know pandoc and it seems wonderful and I'm planning on
> >    using it in a project of mine. My project however is written in C.
> >    Given that making C bindings is a common operation for many languages
> >    (and I saw that for Haskell it too is possible), I was wondering if
> >    pandoc has any C bindings? If not, would it be a possibility to make
> >    those bindings?
> >    I know very basic Haskell, but I might be able to make the bindings
> >    myself with some struggle, if the developers are interested..
> >    Thank you,
> >    Shahbaz
> >
> >    --
> >    You received this message because you are subscribed to the Google
> >    Groups "pandoc-discuss" group.
> >    To unsubscribe from this group and stop receiving emails from it, send
> >    an email to pandoc-discuss+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
> >    To post to this group, send email to pandoc-discuss-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
> >    To view this discussion on the web visit
> >    [1]
> https://groups.google.com/d/msgid/pandoc-discuss/cc84a902-1bc5-433f-
> >    b176-ce71dd8e3acd%40googlegroups.com.
> >    For more options, visit [2]https://groups.google.com/groups/opt_out.
> >
> > References
> >
> >    1.
> https://groups.google.com/d/msgid/pandoc-discuss/cc84a902-1bc5-433f-b176-ce71dd8e3acd%40googlegroups.com
> >    2. https://groups.google.com/groups/opt_out
>
> --
> You received this message because you are subscribed to the Google Groups
> "pandoc-discuss" group.
> To unsubscribe from this group and stop receiving emails from it, send an
> email to pandoc-discuss+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
> To post to this group, send email to pandoc-discuss-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
> To view this discussion on the web visit
> https://groups.google.com/d/msgid/pandoc-discuss/20130626171432.GA1663%40protagoras.phil.berkeley.edu
> .
> For more options, visit https://groups.google.com/groups/opt_out.
>
>
>

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Re: C bindings

[John MacFarlane]

There is
https://github.com/toyvo/libpandoc
but I'm not sure when it was last updated.

+++ Shahbaz Youssefi [Jun 26 13 09:32 ]:
>    Hi,
>    I just came to know pandoc and it seems wonderful and I'm planning on
>    using it in a project of mine. My project however is written in C.
>    Given that making C bindings is a common operation for many languages
>    (and I saw that for Haskell it too is possible), I was wondering if
>    pandoc has any C bindings? If not, would it be a possibility to make
>    those bindings?
>    I know very basic Haskell, but I might be able to make the bindings
>    myself with some struggle, if the developers are interested..
>    Thank you,
>    Shahbaz
> 
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> 
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C bindings

[Shahbaz Youssefi]

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Hi,

I just came to know pandoc and it seems wonderful and I'm planning on using 
it in a project of mine. My project however is written in C. Given that 
making C bindings is a common operation for many languages (and I saw that 
for Haskell it too is possible), I was wondering if pandoc has any C 
bindings? If not, would it be a possibility to make those bindings?

I know very basic Haskell, but I might be able to make the bindings myself 
with some struggle, if the developers are interested..

Thank you,
Shahbaz

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