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2023-01-13Update pandoc-lua-engine test: test for Figure, not Null.John MacFarlane
2023-01-13Use latest dev pandoc-lua-marshal.John MacFarlane
2023-01-13Require pandoc-types 1.23, update dependencies.John MacFarlane
This fails to build because pandoc-lua-marshal still needs updating.
2023-01-13Support complex figures. [API change]Albert Krewinkel
Thanks and credit go to Aner Lucero, who laid the groundwork for this feature in the 2021 GSoC project. He contributed many changes, including modifications to the readers for HTML, JATS, and LaTeX, and to the HTML and JATS writers. Shared (Albert Krewinkel): - The new function `figureDiv`, exported from `Text.Pandoc.Shared`, offers a standardized way to convert a figure into a Div element. Readers (Aner Lucero): - HTML reader: `<figure>` elements are parsed as figures, with the caption taken from the respective `<figcaption>` elements. - JATS reader: The `<fig>` and `<caption>` elements are parsed into figure elements, even if the contents is more complex. - LaTeX reader: support for figures with non-image contents and for subfigures. - Markdown reader: paragraphs containing just an image are treated as figures if the `implicit_figures` extension is enabled. The identifier is used as the figure's identifier and the image description is also used as figure caption; all other attributes are treated as belonging to the image. Writers (Aner Lucero, Albert Krewinkel): - DokuWiki, Haddock, Jira, Man, MediaWiki, Ms, Muse, PPTX, RTF, TEI, ZimWiki writers: Figures are rendered like Div elements. - Asciidoc writer: The figure contents is unwrapped; each image in the the figure becomes a separate figure. - Classic custom writers: Figures are passed to the global function `Figure(caption, contents, attr)`, where `caption` and `contents` are strings and `attr` is a table of key-value pairs. - ConTeXt writer: Figures are wrapped in a "placefigure" environment with `\startplacefigure`/`\endplacefigure`, adding the features caption and listing title as properties. Subfigures are place in a single row with the `\startfloatcombination` environment. - DocBook writer: Uses `mediaobject` elements, unless the figure contains subfigures or tables, in which case the figure content is unwrapped. - Docx writer: figures with multiple content blocks are rendered as tables with style `FigureTable`; like before, single-image figures are still output as paragraphs with style `Figure` or `Captioned Figure`, depending on whether a caption is attached. - DokuWiki writer: Caption and "alt-text" are no longer combined. The alt text of a figure will now be lost in the conversion. - FB2 writer: The figure caption is added as alt text to the images in the figure; pre-existing alt texts are kept. - ICML writer: Only single-image figures are supported. The contents of figures with additional elements gets unwrapped. - HTML writer: the alt text is no longer constructed from the caption, as was the case with implicit figures. This reduces duplication, but comes at the risk of images that are missing alt texts. Authors should take care to provide alt texts for all images. Some readers, most notably the Markdown reader with the `implicit_figures` extension, add a caption that's identical to the image description. The writer checks for this and adds an `aria-hidden` attribute to the `<figcaption>` element in that case. - JATS writer: The `<fig>` and `<caption>` elements are used write figures. - LaTeX writer: complex figures, e.g. with non-image contents and subfigures, are supported. The `subfigure` template variable is set if the document contains subfigures, triggering the conditional loading of the *subcaption* package. Contants of figures that contain tables are become unwrapped, as longtable environments are not allowed within figures. - Markdown writer: figures are output as implicit figures if possible, via HTML if the `raw_html` extension is enabled, and as Div elements otherwise. - OpenDocument writer: A separate paragraph is generated for each block element in a figure, each with style `FigureWithCaption`. Behavior for single-image figures therefore remains unchanged. - Org writer: Only the first element in a figure is given a caption; additional block elements in the figure are appended without any caption being added. - RST writer: Single-image figures are supported as before; the contents of more complex images become nested in a container of type `float`. - Texinfo writer: Figures are rendered as float with type `figure`. - Textile writer: Figures are rendered with the help of HTML elements. - XWiki: Figures are placed in a group. Co-authored-by: Aner Lucero <4rgento@gmail.com>
2023-01-12CI: test with GHC 9.2.5 and 9.4.4Albert Krewinkel
2023-01-12Replace `--epub-chapter-level` with `--split-level`.John MacFarlane
Rationale: we need this splitting level now not just in EPUB but in chunked HTML. `--epub-chapter-level` will still function as a deprecated synonynm. `epub-chapter-level` will also continue to work in defaults files, ande `epub_chapter_level` will still work for Lua marshalling. [API changes] Text.Pandoc.App.Opt: remove `optEpubChapterLevel`, add `optSplitLevel`. Text.Pandoc.Options: remove `writerEpubChapterLevel`, add `writerSplitLevel`.
2023-01-10Update copyright years, it's 2023!Albert Krewinkel
2023-01-03Lua: add functions `pandoc.text.toencoding`, `pandoc.text.fromencoding`.Albert Krewinkel
Closes: #8512
2022-12-20T.P.Scripting: Refactor the scripting engine.John MacFarlane
The new type CustomComponents is exported from T.P.Scripting, and the ScriptEngine fields are changed. Instead of separate fields for custom readers and writers, we now have a single function that loads any number of "components" from a script: these may be custom readers, custom writers, templates for writers, or extension configs. (Note: it's possible to have a custom reader and a custom writer for a format together in the same file.) Pandoc now checks the folder `custom` in the user's data directory for a matching script if it can't find one in the local directory. Previously, the `readers` and `writers` data directories were search for custom readers and writers, respectively. Scripts in those directories must be moved to the `custom` folder. Custom readers used to implement a fallback behavior that allowed to consume just a string value as input to the `Reader` function. This has been removed, the first argument is now always a list of sources. Use `tostring` on that argument to get a string. Closes #8417. Signed-off-by: Albert Krewinkel <albert@zeitkraut.de>
2022-12-20Shared: use LineBreak as default block sep in blocksToInlinesAlbert Krewinkel
This change also affects the `pandoc.utils.blocks_to_inlines` Lua function. Closes: #8499
2022-12-16Lua: allow table structure as format spec.Albert Krewinkel
This allows to pass structured values as format specifiers to `pandoc.write` and `pandoc.read`.
2022-12-16Format: use simpler structure for ExtensionsDiff.Albert Krewinkel
2022-12-12Lua: add pandoc.cli moduleAlbert Krewinkel
Allow processing of CLI options in Lua.
2022-12-08Shared: change defaultBlocksSeparator to PARAGRAPH SEPARATORAlbert Krewinkel
This Unicode char (U+2029) is intended as a semantic separator between paragraphs; it is cleaner and less intrusive than the pilcrow sign that we used before. This also changes the default `sep` value used in the `pandoc.utils.blocks_to_inlines` Lua function.
2022-12-05Lua: support `-D` CLI option for custom writers [API change]Albert Krewinkel
A new error `PandocNoTemplateError` (code 87) is thrown if a template is required but cannot be found.
2022-12-03doc/lua-filters.md: add documentation for pandoc.formatAlbert Krewinkel
2022-11-21Use doctemplates 0.11.John MacFarlane
This avoids a transitive dependency on HsYAML, which we no longer use in pandoc.
2022-11-15Allow mtl 2.3.1Alexander Batischev
2022-10-30hlint suggestions.John MacFarlane
2022-10-27Fix test for template marshaling.Albert Krewinkel
2022-10-27Lua: allow strings in place of compiled templates.Albert Krewinkel
This allows to use a string as parameter to `pandoc.template.apply` and in the WriterOptions `template` field. Closes: #8321
2022-10-25Lua: rename `reader_extensions`/`writer_extensions` globals...John MacFarlane
...as `Extensions`. Update documnetation. Include a custom extension in the documentation example. See #8390.
2022-10-24Remove sample.lua from data files (#8397)Albert Krewinkel
The file is kept around in the pandoc-lua-engine test-suite. Closes: #8356
2022-10-21Lua: add pandoc.scaffolding.Writer (#8377)Albert Krewinkel
This can be used to reduce boilerplate in custom writers.
2022-10-20T.P.Lua.Module.Pandoc: Remove `pushModule`.John MacFarlane
This is not used and is not an exported function; it's dead code. @tarleb if there is some reason to keep this here, please feel free to revert this.
2022-10-20Add custom extensions.John MacFarlane
T.P.Extensions [API change]: + Add CustomExtension constructor to Extension. + Remove Bounded, Enum instances for Extension. + Add `extensionsToList` function. + Revise `readExtension` so it can handle CustomExtension, and so that it returns a Text rather than Maybe Text. + Add `showExtension`. T.P.Format: + Revise error checking to handle CustomExtension.
2022-10-20Lua: add new module `pandoc.zip`Albert Krewinkel
Allows to handle docx and epub files.
2022-10-19Fix import in pandoc-lua-engine tests.John MacFarlane
We neglected to change the import after adding T.P.Version.
2022-10-19Split Text.Pandoc.Version from Text.Pandoc.Shared.John MacFarlane
This new module exports `pandocVersion` and `pandocVersionText`, which are no longer exported from Text.Pandoc.Shared. [API change] Also, we now set the `pandoc-version` variable centrally rather than in the writers. One effect is the man writer now emits a comment with the pandoc version (this was intended before, judging from the template, but it didn't happen because the vairable wasn't set).
2022-10-16Lua: fix rendering of Lua errors in LuaAlbert Krewinkel
Otherwise the `Error running Lua` message can be prepended multiple times.
2022-10-16Lua: fix peeker for PandocError.Albert Krewinkel
String error messages were incorrectly popped of the stack when retrieving a PandocError.
2022-10-14Lua: Support built-in default templates for custom writersAlbert Krewinkel
Custom writers can define a default template via a global `Template` function; the data directory is no longer searched for a default template. Writer authors can restore the old lookup behavior with ``` lua Template = function () local template return template.compile(template.default(PANDOC_SCRIPT_FILE)) end ```
2022-10-12Lua: add function `pandoc.template.meta_to_context`.Albert Krewinkel
The functions converts Meta values to template contexts; the intended use is in combination with `pandoc.template.apply`.
2022-10-12Lua: support extensions in custom readers.Albert Krewinkel
Like custom readers, like writers, can define the set of supported extensions by setting a global. E.g.: ``` lua reader_extensions = { smart = true, citations = false, } ```
2022-10-12Lua: allow Doc values in `WriterOptions.variables`.Albert Krewinkel
The specialized peeker and pusher function for `Context Text` values does not go via JSON, and thus keeps Doc values unchanged during round-tripping.
2022-10-11Lua: add function `pandoc.template.apply`Albert Krewinkel
The new function applies a context, containing variable assignments, to a template.
2022-10-10Lua: support extensions in custom writersAlbert Krewinkel
Custom writers can define the extensions that they support via the global `writer_extensions`. The variable's value must be a table with all supported extensions as keys, and their default status as values. E.g., the below specifies that the writer support the extensions `smart` and `sourcepos`, but only the `smart` extension is enabled by default: writer_extensions = { smart = true, sourcepos = false, }
2022-10-10Lua: support custom bytestring readers.Albert Krewinkel
2022-10-10Lua: use `Reader` type for custom readers.Albert Krewinkel
2022-10-08[API Change] Change argument type of `getReader`, `getWriter`.Albert Krewinkel
The functions now take a `FlavoredFormat` instead of a text argument.
2022-10-08[API Change] Add new module "Text.Pandoc.Format"Albert Krewinkel
The module provides functions and types for format spec parsing and processing. The function `parseFormatSpec` was moved from Text.Pandoc.Extensions to the new module and renamed to `parseFlavoredFormat`. It now operates in a PandocMonad and is based on the updated types.
2022-10-06Lua: cleanup module dependenciesAlbert Krewinkel
Ensures a cleaner module dependency graph.
2022-10-05Lua: fix tests on Windows broken in previous commit.Albert Krewinkel
2022-10-05Lua: produce more informative error messages for pandoc errorsAlbert Krewinkel
Errors are reported in Lua in the same words in which they would be reported in the terminal.
2022-10-04Lua: add new module `pandoc.format`.Albert Krewinkel
The module provides functions to query the set of extensions supported by formats, and the set of extension enabled per default.
2022-10-04Lua: ensure that extensions marshaling is consistent.Albert Krewinkel
2022-10-03Separate out T.P.Data, T.P.Translations from T.P.Class. (#8348)John MacFarlane
This makes T.P.Class more self-contained, and suitable for extraction into a separate package if desired. [API changes] - T.P.Data is now an exported module, providing `readDataFile`, `readDefaultDataFile` (both formerly provided by T.P.Class), and also `getDataFileNames` (formerly unexported in T.P.App.CommandLineOptions). - T.P.Translations is now an exported module (along with T.P.Translations.Types), providing `readTranslations`, `getTranslations`, `setTranslations`, `translateTerm`, `lookupTerm`, `readTranslations`, `Term(..)`, and `Translations`. - T.P.Class: `readDataFile`, `readDefaultDataFile`, `setTranslations`, and `translateTerm` are no longer exported. `checkUserDataDir` is now exported. - Text.Pandoc now exports Text.Pandoc.Data and `setTranslations` and `translateTerm`.
2022-10-03Add test for custom bytestring writersAlbert Krewinkel
2022-10-03Remove unused lua53 flag.John MacFarlane
2022-10-03[API Change] Support bytestring custom writers.Albert Krewinkel
New-style custom Lua writers can now define an alternative entry function `BinaryWriter`. If a function with that name is defined, then pandoc will treat the returned string as binary output. This allows to generate formats like docx and odt with custom writers.