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2021-11-05Add interface for custom readers written in Lua. (#7671)John MacFarlane1-5/+8
New module Text.Pandoc.Readers.Custom, exporting readCustom [API change]. Users can now do `-f myreader.lua` and pandoc will treat the script myreader.lua as a custom reader, which parses an input string to a pandoc AST, using the pandoc module defined for Lua filters. A sample custom reader can be found in data/reader.lua. Closes #7669.
2021-10-27Switch back from HsYAML to yaml.John MacFarlane1-1/+1
Reasons: - Performance: HsYAML is around 20 times slower in parsing large YAML bibliographies (#6084). - An issue was submitted to HsYAML, but it hasn't gotten any attention. HsYAML seems borderline unmaintained; it hasn't had a commit in over a year. - Unfortunately this goes back on our attempts to free ourselves from C dependencies (#4535). But I don't see a better alternative until a better pure Haskell parser is available. Closes #6084. Notes: - We've removed the FromYAML instances for all types that had them, since this is a HsYAML-specific typeclass [API change]. (The yaml package just uses From/ToJSON.) - Unlike HsYAML (in the configuration we were using), yaml parses 'Y', 'N', 'Yes', 'No', 'On', 'Off' as boolean values. Users may need to quote these when they are meant to be interpreted as strings. Similarly, 'null' is parsed as a YAML null value (and will be treated as an empty string by pandoc rather than the string 'null'). Quoting it will force it to be interpreted as a string. - Some tests had to be adjusted accordingly. - Pandoc now behaves better when the YAML metadata contains escaping errors: instead of just falling back on treating the section as a table, it raises a YAML parsing error.
2021-09-08App: Issue NotUTF8Encoded warning when falling back to latin1.John MacFarlane1-2/+6
2021-08-28Add `--sandbox` option.John MacFarlane1-4/+25
+ Add sandbox feature for readers. When this option is used, readers and writers only have access to input files (and other files specified directly on command line). This restriction is enforced in the type system. + Filters, PDF production, custom writers are unaffected. This feature only insulates the actual readers and writers, not the pipeline around them in Text.Pandoc.App. + Note that when `--sandboxed` is specified, readers won't have access to the resource path, nor will anything have access to the user data directory. + Add module Text.Pandoc.Class.Sandbox, defining `sandbox`. Exported via Text.Pandoc.Class. [API change] Closes #5045.
2021-08-28Docx writer: handle SVG images.John MacFarlane1-3/+18
This change has several parts: - In Text.Pandoc.App, if the writer is docx, we fill the media bag and attempt to convert any SVG images to PNG, adding these to the media bag. The PNG backups have the same filenames as the SVG images, but with an added .png extension. If the conversion cannot be done (e.g. because rsvg-convert is not present), a warning is omitted. - In Text.Pandoc.Writers.Docx, we now use Word 2016's syntax for including SVG images. If a PNG fallback is present in the media bag, we include a link to that too. It would be helpful if someone with an old Word version could test to see that the documents we produce can be opened and viewed with the PNG fallbacks. If not, then perhaps we can eliminate the slightly complex code for producing these fallbacks. Closes #4058.
2021-08-24Comment out unused module.John MacFarlane1-1/+1
2021-08-24Reorganize App to make it easier to limit IO in main loop.John MacFarlane1-85/+100
Previously we used liftIO fairly liberally. The code has been restructured to avoid this. A small behavior change is that pandoc will now fall back to latin1 encoding for inputs that can't be read as UTF-8. This is what it did previously for content fetched from the web and not marked as to content type. It makes sense to do the same for local files.
2021-08-24T.P.App.OutputSettings: Generalize some types...John MacFarlane1-1/+1
so we can run this with any instance of PandocMonad and MonadIO, not just PandocIO.
2021-08-22App: Move output-file writing out of PandocMonad action.John MacFarlane1-29/+29
2021-05-09Change reader types, allowing better tracking of source positions.John MacFarlane1-3/+5
Previously, when multiple file arguments were provided, pandoc simply concatenated them and passed the contents to the readers, which took a Text argument. As a result, the readers had no way of knowing which file was the source of any particular bit of text. This meant that we couldn't report accurate source positions on errors or include accurate source positions as attributes in the AST. More seriously, it meant that we couldn't resolve resource paths relative to the files containing them (see e.g. #5501, #6632, #6384, #3752). Add Text.Pandoc.Sources (exported module), with a `Sources` type and a `ToSources` class. A `Sources` wraps a list of `(SourcePos, Text)` pairs. [API change] A parsec `Stream` instance is provided for `Sources`. The module also exports versions of parsec's `satisfy` and other Char parsers that track source positions accurately from a `Sources` stream (or any instance of the new `UpdateSourcePos` class). Text.Pandoc.Parsing now exports these modified Char parsers instead of the ones parsec provides. Modified parsers to use a `Sources` as stream [API change]. The readers that previously took a `Text` argument have been modified to take any instance of `ToSources`. So, they may still be used with a `Text`, but they can also be used with a `Sources` object. In Text.Pandoc.Error, modified the constructor PandocParsecError to take a `Sources` rather than a `Text` as first argument, so parse error locations can be accurately reported. T.P.Error: showPos, do not print "-" as source name.
2021-05-05App: allow tabs expansion even if file-scope is usedAlbert Krewinkel1-7/+11
Tabs in plain-text inputs are now handled correctly, even if the `--file-scope` flag is used. Closes: #6709
2021-04-17Update to released unicode-collation, latest citeproc dev version.John MacFarlane1-1/+1
Update citeproc test.
2021-04-17Remove Text.Pandoc.BCP47 module.John MacFarlane1-3/+3
[API change] Use Lang from UnicodeCollation.Lang instead. This is a richer implementation of BCP 47.
2021-03-05Implement environment variable interpolation in defaults files.John MacFarlane1-8/+21
This allows the syntax `${HOME}` to be used, in fields that expect file paths only. Any environment variable may be interpolated in this way. A warning will be raised for undefined variables. The special variable `USERDATA` is automatically set to the user data directory in force when the defaults file is parsed. (Note: it may be different from the eventual user data directory, if the defaults file or further command line options change that.) Closes #5982. Closes #5977. Closes #6108 (path not taken).
2021-02-22Fall back to latin1 if UTF-8 decoding fails...John MacFarlane1-1/+7
...when handling URL argument served with no charset in the mime type. The assumption is that most pages that don't specify a charset in the mime type are either UTF-8 or latin1. I think that's a good assumption, though I'm not sure.
2021-02-22When downloading content from URL arguments, be sensitive to...John MacFarlane1-1/+9
the character encoding. We can properly handle UTF-8 and latin1 (ISO-8859-1); for others we raise an error. See #5600.
2021-02-22Text.Pandoc.UTF8: change IO functions to return Text, not String.John MacFarlane1-5/+5
[API change] This affects `readFile`, `getContents`, `writeFileWith`, `writeFile`, `putStrWith`, `putStr`, `putStrLnWith`, `putStrLn`. `hPutStrWith`, `hPutStr`, `hPutStrLnWith`, `hPutStrLn`, `hGetContents`. This avoids the need to uselessly create a linked list of characters when emiting output.
2021-02-02Add parseOptionsFromArgs [API change, addition].John MacFarlane1-1/+3
Exported by Text.Pandoc.App.
2021-01-10JATS writer: fix citations (#7018)Albert Krewinkel1-14/+2
* JATS writer: keep code lines at 80 chars or below * JATS writer: fix citations
2021-01-08Update copyright notices for 2021 (#7012)Albert Krewinkel1-1/+1
2020-11-26Added some explicit imports.John MacFarlane1-3/+3
2020-11-16Only use filterIpynbOutput if input format is ipynb.John MacFarlane1-0/+1
Closes #6841.
2020-11-16When checking reader/writer name, check base name...John MacFarlane1-9/+11
now that we permit extensions on formats other than markdown.
2020-10-07Raise informative errors when YAML metadata parsing fails.John MacFarlane1-2/+3
Closes #6730. Previously the command would succeed, returning empty metadata, with no errors or warnings. API changes: - Remove now unused CouldNotParseYamlMetadata constructor for LogMessage (T.P.Logging). - Add 'Maybe FilePath' parameter to yamlToMeta in T.P.Readers.Markdown.
2020-09-21Add built-in citation support using new citeproc library.John MacFarlane1-11/+16
This deprecates the use of the external pandoc-citeproc filter; citation processing is now built in to pandoc. * Add dependency on citeproc library. * Add Text.Pandoc.Citeproc module (and some associated unexported modules under Text.Pandoc.Citeproc). Exports `processCitations`. [API change] * Add data files needed for Text.Pandoc.Citeproc: default.csl in the data directory, and a citeproc directory that is just used at compile-time. Note that we've added file-embed as a mandatory rather than a conditional depedency, because of the biblatex localization files. We might eventually want to use readDataFile for this, but it would take some code reorganization. * Text.Pandoc.Loging: Add `CiteprocWarning` to `LogMessage` and use it in `processCitations`. [API change] * Add tests from the pandoc-citeproc package as command tests (including some tests pandoc-citeproc did not pass). * Remove instructions for building pandoc-citeproc from CI and release binary build instructions. We will no longer distribute pandoc-citeproc. * Markdown reader: tweak abbreviation support. Don't insert a nonbreaking space after a potential abbreviation if it comes right before a note or citation. This messes up several things, including citeproc's moving of note citations. * Add `csljson` as and input and output format. This allows pandoc to convert between `csljson` and other bibliography formats, and to generate formatted versions of CSL JSON bibliographies. * Add module Text.Pandoc.Writers.CslJson, exporting `writeCslJson`. [API change] * Add module Text.Pandoc.Readers.CslJson, exporting `readCslJson`. [API change] * Added `bibtex`, `biblatex` as input formats. This allows pandoc to convert between BibLaTeX and BibTeX and other bibliography formats, and to generated formatted versions of BibTeX/BibLaTeX bibliographies. * Add module Text.Pandoc.Readers.BibTeX, exporting `readBibTeX` and `readBibLaTeX`. [API change] * Make "standalone" implicit if output format is a bibliography format. This is needed because pandoc readers for bibliography formats put the bibliographic information in the `references` field of metadata; and unless standalone is specified, metadata gets ignored. (TODO: This needs improvement. We should trigger standalone for the reader when the input format is bibliographic, and for the writer when the output format is markdown.) * Carry over `citationNoteNum` to `citationNoteNumber`. This was just ignored in pandoc-citeproc. * Text.Pandoc.Filter: Add `CiteprocFilter` constructor to Filter. [API change] This runs the processCitations transformation. We need to treat it like a filter so it can be placed in the sequence of filter runs (after some, before others). In FromYAML, this is parsed from `citeproc` or `{type: citeproc}`, so this special filter may be specified either way in a defaults file (or by `citeproc: true`, though this gives no control of positioning relative to other filters). TODO: we need to add something to the manual section on defaults files for this. * Add deprecation warning if `upandoc-citeproc` filter is used. * Add `--citeproc/-C` option to trigger citation processing. This behaves like a filter and will be positioned relative to filters as they appear on the command line. * Rewrote the manual on citatations, adding a dedicated Citations section which also includes some information formerly found in the pandoc-citeproc man page. * Look for CSL styles in the `csl` subdirectory of the pandoc user data directory. This changes the old pandoc-citeproc behavior, which looked in `~/.csl`. Users can simply symlink `~/.csl` to the `csl` subdirectory of their pandoc user data directory if they want the old behavior. * Add support for CSL bibliography entry formatting to LaTeX, HTML, Ms writers. Added CSL-related CSS to styles.html.
2020-04-13Add an option to disable certificate validation (#6156)Cédric Couralet1-0/+2
This commit adds the option `--no-check-certificate`, which disables certificate checking when resources are fetched by HTTP. Co-authored-by: Cécile Chemin <cecile.chemin@insee.fr> Co-authored-by: Juliette Fourcot <juliette.fourcot@insee.fr>
2020-03-15Use implicit Prelude (#6187)Albert Krewinkel1-2/+0
* Use implicit Prelude The previous behavior was introduced as a fix for #4464. It seems that this change alone did not fix the issue, and `stack ghci` and `cabal repl` only work with GHC 8.4.1 or newer, as no custom Prelude is loaded for these versions. Given this, it seems cleaner to revert to the implicit Prelude. * PandocMonad: remove outdated check for base version Only base versions 4.9 and later are supported, the check for `MIN_VERSION_base(4,8,0)` is therefore unnecessary. * Always use custom prelude Previously, the custom prelude was used only with older GHC versions, as a workaround for problems with ghci. The ghci problems are resolved by replacing package `base` with `base-noprelude`, allowing for consistent use of the custom prelude across all GHC versions.
2020-03-13Update copyright year (#6186)Albert Krewinkel1-1/+1
* Update copyright year * Copyright: add notes for Lua and Jira modules
2020-02-19Text.Pandoc.App: set resource path at the beginning...John MacFarlane1-1/+2
...so it can affect things like include-in-header. See #5982.
2020-02-08Factor out a findM function (#6125)Joseph C. Sible1-8/+2
This adds a new function to the API: Text.Pandoc.Shared.findM.
2020-02-07Apply linter suggestions. Add fix_spacing to lint target in Makefile.John MacFarlane1-1/+1
2020-02-07Resolve HLint warningsAlbert Krewinkel1-1/+1
All warnings are either fixed or, if more appropriate, HLint is configured to ignore them. HLint suggestions remain. * Ignore "Use camelCase" warnings in Lua and legacy code * Fix or ignore remaining HLint warnings * Remove redundant brackets * Remove redundant `return`s * Remove redundant as-pattern * Fuse mapM_/map * Use `.` to shorten code * Remove redundant `fmap` * Remove unused LANGUAGE pragmas * Hoist `not` in Text.Pandoc.App * Use fewer imports for `Text.DocTemplates` * Remove redundant `do`s * Remove redundant `$`s * Jira reader: remove unnecessary parentheses
2020-02-07More in-depth refactoring and cleanup (#6123)Joseph C. Sible1-11/+10
* Avoid duplicating the dash case * Pull common functions out of case branches * Make sure list lengths are only calculated once * Use unless * Simplify parseURIReference' and avoid an unnecessary call to length * Use <$> instead of reimplementing it * Use swap instead of reimplementing it * Remove eta-expansion that's been unnecessary since 90f5dd8 * Use tailDef instead of reimplementing it * Use second instead of fmap, per @tarleb
2019-11-24Add unexported Text.Pandoc.Readers.Metadata.John MacFarlane1-1/+1
For YAML metadata parsing. A step in the direction of #5914. No API change.
2019-11-14Change optInputFiles to a `Maybe [FilePath]`.John MacFarlane1-6/+6
`Nothing` means: nothing specified. `Just []` means: an empty list specified (e.g. in defaults). Potentially these could lead to different behavior: see #5888.
2019-11-12Switch to new pandoc-types and use Text instead of String [API change].despresc1-23/+21
PR #5884. + Use pandoc-types 1.20 and texmath 0.12. + Text is now used instead of String, with a few exceptions. + In the MediaBag module, some of the types using Strings were switched to use FilePath instead (not Text). + In the Parsing module, new parsers `manyChar`, `many1Char`, `manyTillChar`, `many1TillChar`, `many1Till`, `manyUntil`, `mantyUntilChar` have been added: these are like their unsuffixed counterparts but pack some or all of their output. + `glob` in Text.Pandoc.Class still takes String since it seems to be intended as an interface to Glob, which uses strings. It seems to be used only once in the package, in the EPUB writer, so that is not hard to change.
2019-11-07Change merge behavior for metadata.John MacFarlane1-8/+4
Previously, if a document contained two YAML metadata blocks that set the same field, the conflict would be resolved in favor of the first. Now it is resolved in favor of the second (due to a change in pandoc-types). This makes the behavior more uniform with other things in pandoc (such as reference links and `--metadata-file`).
2019-11-06Add and apply filters in order (not reversed).John MacFarlane1-2/+1
This changes `applyFilters` from Text.Pandoc.Filter so that it does a left fold rather than a right fold, applying the filters in the order listed. [behavior change] The command-line arguments are accumulated in order instead of reverse order. A first step twoards #5881.
2019-11-03Allow pdf output to stdout.John MacFarlane1-1/+2
PDF output will not be output to the terminal, but can be sent to stdout using either `-o -` or a pipe. The intermediate format will be determined based on the setting of `--pdf-engine`. Closes #5751.
2019-10-10Improve parsing of --defaults.John MacFarlane1-8/+8
- Add FromYAML instances to Opt and to all subsidiary types. - Remove the use of HsYAML-aeson, which doesn't give good position information on errors. - Rename some fields in Opt to better match cli options or reflect what the ycontain [API change]: + optMetadataFile -> optMetadataFiles + optPDFEngineArgs -> optPDFEngineOpts + optWrapText -> optWrap - Add IpynbOutput enumerated type to Text.Pandoc.App.Opts. Use this instead fo a string for optIpynbOutput. - Add FromYAML instance for Filter in Text.Pandoc.Filters. With these changes parsing of defaults files should be complete and should give decent error messages. Now (unlike before) we get an error if an unknown field is used.
2019-10-10`--metadata-file`: when multiple files specified, second takes precedence...John MacFarlane1-0/+4
on conflicting fields. This changes earlier behavior (but not in a release), where first took precedence. Note that this may seem inconsistent with the behavior of multiple YAML blocks within a document, where the first takes precedence. Still, it is convenient to be able to override defaults with options later on the command line.
2019-10-09T.P.App.Opt: rename optReader, optWriter as optFrom, optTo.John MacFarlane1-1/+1
This will allow to: and from: in defaults.
2019-10-09T.P.App.Opt: Changed optMetadata to Meta, to allow structured values.John MacFarlane1-38/+16
[API change] The current behavior of the `--metadata` option stays the same.
2019-10-06Text.Pandoc.App.Opt: Remove optBaseHeaderLevel from Opt.John MacFarlane1-4/+1
We now just use optShiftHeadingLevelBy, to avoid redundancy.
2019-10-06Text.Pandoc.App.Opt: Change optShiftHeadingLevel to optShiftHeadingLevelBy...John MacFarlane1-1/+1
to match the option.
2019-09-29Raise error on unsupported extensions. Closes #4338.John MacFarlane1-10/+1
+ An error is now raised if you try to specify (enable or disable) an extension that does not affect the given format, e.g. `docx+pipe_tables`. + The `--list-extensions[=FORMAT]` option now lists only extensions that affect the given FORMAT. + Text.Pandoc.Error: Add constructors `PandocUnknownReaderError`, `PandocUnknownWriterError`, `PandocUnsupportedExtensionError`. [API change] + Text.Pandoc.Extensions now exports `getAllExtensions`, which returns the extensions that affect a given format (whether enabled by default or not). [API change] + Text.Pandoc.Extensions: change type of `parseFormatSpec` from `Either ParseError (String, Extensions -> Extensions)` to `Either ParseError (String, [Extension], [Extension])` [API change]. + Text.Pandoc.Readers: change type of `getReader` so it returns a value in the PandocMonad instance rather than an Either [API change]. Exceptions for unknown formats and unsupported extensions are now raised by this function and need not be handled by the calling function. + Text.Pandoc.Writers: change type of `getWriter` so it returns a value in the PandocMonad instance rather than an Either [API change]. Exceptions for unknown formats and unsupported extensions are now raised by this function and need not be handled by the calling function.
2019-09-27LogMessage: change UnknownExtension -> CouldNotDeduceFormatJohn MacFarlane1-1/+1
2019-09-10Add --shift-heading-level-by option.John MacFarlane1-0/+3
Deprecate --base-heading-level. The new option does everything the old one does, but also allows negative shifts. It also promotes the document metadata (if not null) to a level-1 heading with a +1 shift, and demotes an initial level-1 heading to document metadata with a -1 shift. This supports converting documents that use an initial level-1 heading for the document title. Closes #5615.
2019-09-08Emit warning on `-f latex -o out.pdf` (#5736)Mauro Bieg1-0/+8
add UnusualConversion to LogMessage [API change]
2019-08-25Don't add a newline if there's already one.John MacFarlane1-4/+5