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2017-12-10Lua filters: fix package loading for Lua 5.1Albert Krewinkel1-1/+4
The list of package searchers is named `package.loaders` in Lua 5.1 and LuaJIT, and `package.searchers` in Lua 5.2 and later.
2017-12-06Lua filters: use script to initialize the interpreterAlbert Krewinkel1-3/+4
The file `init.lua` is used to initialize the Lua interpreter which is used in Lua filters. This gives users the option to require libraries which they want to use in all of their filters, and to extend default modules.
2017-12-02Lua filters: refactor lua module handlingAlbert Krewinkel3-33/+148
The integration with Lua's package/module system is improved: A pandoc-specific package searcher is prepended to the searchers in `package.searchers`. The modules `pandoc` and `pandoc.mediabag` can now be loaded via `require`.
2017-12-01Lua/StackInstances: push Pandoc and Meta via constructorAlbert Krewinkel1-7/+5
Pandoc and Meta elements are now pushed by calling the respective constructor functions of the pandoc Lua module. This makes serialization consistent with the way blocks and inlines are pushed to lua and allows to use List methods with the `blocks` value.
2017-12-01List.lua: add missing fixes as discussed in #4099Albert Krewinkel1-1/+1
The changes were missing due to an error while using git.
2017-11-28Add basic lua List module (#4099)Albert Krewinkel1-5/+23
The List module is automatically loaded, but not assigned to a global variable. It can be included in filters by calling `List = require 'List'`. Lists of blocks, lists of inlines, and lists of classes are now given `List` as a metatable, making working with them more convenient. E.g., it is now possible to concatenate lists of inlines using Lua's concatenation operator `..` (requires at least one of the operants to have `List` as a metatable): function Emph (emph) local s = {pandoc.Space(), pandoc.Str 'emphasized'} return pandoc.Span(emph.content .. s) end Closes: #4081
2017-11-11Functor instance to fix ghc 7.8 warning.John MacFarlane1-1/+1
2017-11-11Add lua filter functions to walk inline and block elements.John MacFarlane2-1/+189
Refactored some code from Text.Pandoc.Lua.PandocModule into new internal module Text.Pandoc.Lua.Filter. Add `walk_inline` and `walk_block` in pandoc lua module.
2017-10-27hlint suggestions.John MacFarlane1-10/+10
2017-10-27Automatic reformating by stylish-haskell.John MacFarlane3-16/+17
2017-10-26update years in copyrightKolen Cheung1-1/+1
2017-10-05Use hslua v0.9.0Albert Krewinkel1-12/+1
2017-10-03pandoc.lua: use wrapper funciton for pipe commandAlbert Krewinkel1-1/+1
The pipe command is wrapped in a lua function, throwing a lua error if the command returns with an error. A wrapper is needed as Haskell functions exposed to lua may not throw lua errors due to limitations of hslua. The error handling is written such that a table can be returned as an error object in the future. This is potentially useful when finer control is required while catching the error in lua code. Current limitations of hslua require error objects to be strings.
2017-10-03Lua.PandocModule: promote addFunction to top levelAlbert Krewinkel1-14/+10
This reduces some boilerplate.
2017-10-01Lua: added 'pipe', which encapsulates Text.Pandoc.Process.pipeProcess.John MacFarlane1-0/+17
This is hard to do in lua, so it's helpful to provide this.
2017-10-01Lua: move sha1 from pandoc.mediabag to pandoc.John MacFarlane1-1/+3
2017-09-30Lua: use sha1 instead of hashname.John MacFarlane1-13/+5
Better to leave control over the extension to the user.
2017-09-30Lua: make fetch return mime type first and then content.John MacFarlane1-1/+1
2017-09-30Lua: simply mediabag module.John MacFarlane1-15/+31
Now 'fetch' simply fetches content and mime type. A new 'hashname' function is provided to get a filename based on the sha1 hash of the contents and the mime type.
2017-09-30Lua: make lua.mediabag.fetch return filename and mime type.John MacFarlane1-0/+4
This is necessary because you may need to insert the filename into an image or link element.
2017-09-30Lua filters: make sure whole CommonState is passed through...John MacFarlane1-9/+14
to insertResource (`fetch`).
2017-09-30Removed writerSourceURL, add source URL to common state.John MacFarlane1-4/+2
Removed `writerSourceURL` from `WriterOptions` (API change). Added `stSourceURL` to `CommonState`. It is set automatically by `setInputFiles`. Text.Pandoc.Class now exports `setInputFiles`, `setOutputFile`. The type of `getInputFiles` has changed; it now returns `[FilePath]` instead of `Maybe [FilePath]`. Functions in Class that formerly took the source URL as a parameter now have one fewer parameter (`fetchItem`, `downloadOrRead`, `setMediaResource`, `fillMediaBag`). Removed `WriterOptions` parameter from `makeSelfContained` in `SelfContained`.
2017-09-30Text.Pandoc.Lua: add mediabag submoduleAlbert Krewinkel1-14/+111
2017-09-24Allow lua filters to return lists of elementsAlbert Krewinkel1-15/+15
Closes: #3918
2017-08-16Update to hslua-0.8.0Albert Krewinkel1-2/+12
hslua no longer provides lua stack instances for Int and Double, the necessary instances are added to the Custom writer and the lua filtering system.
2017-08-13Delete Text.Pandoc.Lua.SharedInstancesAlbert Krewinkel3-56/+11
Stack instances for common data types are now provides by hslua. The instance for Either was useful only for a very specific case; the function that was using the `ToLuaStack Either` instance was rewritten to work without it. Closes: #3805
2017-08-13Text.Pandoc.Lua: Optimize performance by using raw table accessAlbert Krewinkel2-17/+27
Raw table accessing functions never call back into haskell, which allows the compiler to use more aggressive optimizations. This improves lua filter performance considerably (⪆5% speedup).
2017-08-13Use hslua >= 0.7, update Lua codeAlbert Krewinkel5-395/+260
2017-08-11Added support for translations (localization) (see #3559).John MacFarlane1-3/+3
* readDataFile, readDefaultDataFile, getReferenceDocx, getReferenceODT have been removed from Shared and moved into Class. They are now defined in terms of PandocMonad primitives, rather than being primitve methods of the class. * toLang has been moved from BCP47 to Class. * NoTranslation and CouldNotLoudTranslations have been added to LogMessage. * New module, Text.Pandoc.Translations, exporting Term, Translations, readTranslations. * New functions in Class: translateTerm, setTranslations. Note that nothing is loaded from data files until translateTerm is used; setTranslation just sets the language to be used. * Added two translation data files in data/translations. * LaTeX reader: Support `\setmainlanguage` or `\setdefaultlanguage` (polyglossia) and `\figurename`.
2017-06-29Added parameter for user data directory to runLuaFilter.John MacFarlane1-5/+5
in Text.Pandoc.Lua. Also to pushPandocModule. This change allows users to override pandoc.lua with a file in their local data directory, adding custom functions, etc. @tarleb, if you think this is a bad idea, you can revert this. But in general our data files are all overridable.
2017-06-24Readers.getReader, Writers.getWriter API change.John MacFarlane1-2/+3
Now these functions return a pair of a reader/writer and an Extensions, instead of building the extensions into the reader/writer. The calling code must explicitly set readerExtensions or writerExtensions using the Extensions returned. The point of the change is to make it possible for the calling code to determine what extensions are being used. See #3659.
2017-06-10Changed all readers to take Text instead of String.John MacFarlane1-2/+3
Readers: Renamed StringReader -> TextReader. Updated tests. API change.
2017-06-03Improve code style in lua and org modulesAlbert Krewinkel5-32/+28
2017-05-13Update dates in copyright noticesAlbert Krewinkel3-4/+4
This follows the suggestions given by the FSF for GPL licensed software. <https://www.gnu.org/prep/maintain/html_node/Copyright-Notices.html>
2017-04-30Lua module: simplify Attributes, rename to AttrAlbert Krewinkel1-1/+1
Attributes was written to behave much like a normal table, in order to simplify working with it. However, all Attr containing elements were changed to provide panflute-like accessors to Attr components, rendering the previous approach unnecessary.
2017-04-30Lua module: make Header argument order consistentAlbert Krewinkel1-1/+1
Attributes are always passed as the last element, making it possible to omit this argument. Argument order for `Header` was wrong and is fixed.
2017-04-26Lua module: provide simple `read` format parserAlbert Krewinkel2-67/+28
A single `read` function parsing pandoc-supported formats is added to the module. This is simpler and more convenient than the previous method of exposing all reader functions individually.
2017-04-26Lua filter: allow natural access to meta elementsAlbert Krewinkel1-1/+1
Meta elements that are treated as lua tables (i.e. MetaList, MetaInlines, MetaBlocks, and MetaMap), are no longer wrapped in an additional table but simply marked via a metatable. This allows treating those meta values just like normal tables, while still making empty elements of those values distinguishable.
2017-04-15Lua filter: use Attributes constructor for AttrsAlbert Krewinkel1-14/+26
Element attributes are pushed to the stack via the `Attributes` function. `Attributes` creates an Attr like triple, but the triple also allows table-like access to key-value pairs.
2017-04-14Lua filter: Re-order code of stack value instancesAlbert Krewinkel1-106/+122
2017-04-14Lua filter: use lua strings for nullary constructorsAlbert Krewinkel1-80/+19
Lua string are used to represent nullary data constructors. The previous table-based representation was based on the JSON serialization, but can be simplified. This also matches the way those arguments are passed to custom writers.
2017-04-14Avoid repeating StackValue instances definitionsAlbert Krewinkel3-126/+164
The lua filters and custom lua writer system defined very similar StackValue instances for strings and tuples. These instance definitions are extracted to a separate module to enable sharing.
2017-04-14Extract lua helper functions into Lua.Util moduleAlbert Krewinkel2-103/+142
2017-04-14Use lua bools and strings for MetaBool, MetaStringAlbert Krewinkel1-2/+2
Native lua booleans and strings are used to represent MetaBool and MetaString values. This is more natural than the previous table-based representation. The old lua representation can still be read back to haskell, ensuring compatibility with the `pandoc.MetaBool` and `pandoc.MetaString` lua constructors.
2017-04-14Drop dependency on hslua-aesonAlbert Krewinkel1-1/+0
Pushing values to the lua stack via custom functions is faster and more flexible.
2017-04-14Push blocks via lua constructors and constantsAlbert Krewinkel1-37/+102
All element creation tasks are handled by lua functions defined in the pandoc module.
2017-04-14Push inlines via lua constructors and constantsAlbert Krewinkel1-41/+29
All element creation tasks are handled in the lua module.
2017-04-13Use lua constructors to push meta valuesAlbert Krewinkel1-30/+148
2017-04-11Lua filter: use custom StackValue Inline instanceAlbert Krewinkel1-24/+151
Inline elements are no longer pushed and pulled via aeson's Value.
2017-04-07Lua filter: improve doc filter performanceAlbert Krewinkel1-36/+47
Pandoc elements are pushed and pulled from the lua stack via custom instances.
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