Go Jekyll

When I grow up, I want to be a Go implementation of Jekyll.

Status

See the significant missing functionality below. This tool currently works on some simple sites that don't use drafts, templates, future posts, or various other features listed below.

We are currently ~5x faster than Jekyll. Some obvious improvements would include caching SASS, caching templates, and using goroutines to render pages.

• Content
  • Front Matter
  • Posts
    • Categories
    • Tags
    • Drafts
    • Future
    • Related
  • Static Files
  • Variables
  • Collections
  • Data Files
    • CSV
    • JSON
    • YAML
  • Assets
    • Coffeescript
    • Sass/SCSS
      • Sass cache
• Customization
  • Templates
    • Jekyll filters
      • array filters: group_by group_by_exp sample pop shift
      • string filters: cgi_escape uri_escape scssify smartify slugify normalize_whitespace
      • everything else
    • Jekyll tags
      • include
      • include_relative
      • link
      • post_url
      • gist
      • highlight
    • markdown=1
  • Includes
    • include parameters
    • include variables (e.g. {% include {{ expr }} %})
  • Permalinks
  • Pagination
  • Themes
  • Layouts
• Server
  • Directory watch
  • Live reload
• Windows

Intentional differences from Jekyll:

• serve doesn't write to the file system
• No .sass-cache. (When caching is added, it will go to a temporary directory.)
• Server live reload is always on.

Install

go get -u osteele/gojekyll/cmd/gojekyll

Usage

gojekyll -s path/to/site build                # builds into ./_site
gojekyll -s path/to/site serve                # serves from memory, w/ live reload
gojekyll help
gojekyll help build

Contributing

Install package dependencies and development tools:

make setup

Testing

make test
make lint
gojekyll  -s path/to/site render index.md      # render a file to stdout
gojekyll  -s path/to/site render /             # render a URL to stdout
gojekyll  -s path/to/site variables /          # print a file or URL's variables
./scripts/coverage && go tool cover -html=coverage.out

./scripts/gojekyll is an alternative to the gojekyll executable, that uses go run each time it's invoked.

Profiling

gojekyll -s path/to/site profile
go tool pprof gojekyll gojekyll.prof

Credits

Gojekyll uses these libraries:

Package	Author	Description
github.com/jaschaephraim/lrserver	Jascha Ephraim	Live Reload server
github.com/osteele/liquid	Oliver Steele	Liquid processor
github.com/pkg/browser	pkg	The serve -o option to open the site in the browser
github.com/russross/blackfriday	Russ Ross	Markdown processor
github.com/sass/libsass	Listed here	C port of the Ruby SASS compiler
github.com/wellington/go-libsass	Drew Wells	Go bindings to libsass
gopkg.in/alecthomas/kingpin.v2	Alec Thomas	command line and flag parser
gopkg.in/yaml.v2	Canonical	YAML support

In addition to being totally and obviously inspired by the Jekyll Ruby implementation, Jekyll's solid documentation was indispensible. Many of the filter test cases are taken directly from the Jekyll documentation, and the Jekyll docs were always open in at least one tab.

The gopher image in the test directory is from Wikimedia Commons. It is used under the Creative Commons Attribution-Share Alike 3.0 Unported license.

Related

Hugo isn't Jekyll-compatible (-), but actually works (+++).

Jekyll, of course.

License

MIT

Alternate Naming Possibilities

• "Gekyll". (Hard or soft "g"? See gif.)
• "Gekko"