- Fixup Telegram bridge implementation to support updated dependency.
This commit is contained in:
Duco van Amstel
Wim
parent
6911458d15
commit
f2cdda7278
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@ -53,13 +53,16 @@ func (options *customHTML) ListItem(out *bytes.Buffer, text []byte, flags int) {
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}
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func makeHTML(input string) string {
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return string(blackfriday.Markdown([]byte(input),
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&customHTML{blackfriday.HtmlRenderer(blackfriday.HTML_USE_XHTML|blackfriday.HTML_SKIP_IMAGES, "", "")},
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blackfriday.EXTENSION_NO_INTRA_EMPHASIS|
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blackfriday.EXTENSION_FENCED_CODE|
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blackfriday.EXTENSION_AUTOLINK|
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blackfriday.EXTENSION_SPACE_HEADERS|
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blackfriday.EXTENSION_HEADER_IDS|
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blackfriday.EXTENSION_BACKSLASH_LINE_BREAK|
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blackfriday.EXTENSION_DEFINITION_LISTS))
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extensions := blackfriday.NoIntraEmphasis |
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blackfriday.FencedCode |
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blackfriday.Autolink |
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blackfriday.SpaceHeadings |
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blackfriday.HeadingIDs |
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blackfriday.BackslashLineBreak |
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blackfriday.DefinitionLists
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renderer := &customHTML{blackfriday.NewHTMLRenderer(blackfriday.HTMLRendererParameters{
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Flags: blackfriday.UseXHTML | blackfriday.SkipImages,
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})}
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return string(blackfriday.Run([]byte(input), blackfriday.WithExtensions(extensions), blackfriday.WithRenderer(renderer)))
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}
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3
go.mod
3
go.mod
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@ -53,10 +53,11 @@ require (
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github.com/pkg/errors v0.8.0 // indirect
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github.com/pmezard/go-difflib v1.0.0 // indirect
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github.com/rs/xid v0.0.0-20180525034800-088c5cf1423a
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github.com/russross/blackfriday v1.5.1
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github.com/russross/blackfriday v2.0.0+incompatible
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github.com/saintfish/chardet v0.0.0-20120816061221-3af4cd4741ca
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github.com/shazow/rateio v0.0.0-20150116013248-e8e00881e5c1 // indirect
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github.com/shazow/ssh-chat v0.0.0-20171012174035-2078e1381991
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github.com/shurcooL/sanitized_anchor_name v0.0.0-20170918181015-86672fcb3f95 // indirect
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github.com/sirupsen/logrus v0.0.0-20180213143110-8c0189d9f6bb
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github.com/smartystreets/assertions v0.0.0-20180803164922-886ec427f6b9 // indirect
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github.com/smartystreets/goconvey v0.0.0-20180222194500-ef6db91d284a // indirect
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6
go.sum
6
go.sum
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@ -105,14 +105,16 @@ github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZb
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github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
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github.com/rs/xid v0.0.0-20180525034800-088c5cf1423a h1:UWKek6MK3K6/TpbsFcv+8rrO6rSc6KKSp2FbMOHWsq4=
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github.com/rs/xid v0.0.0-20180525034800-088c5cf1423a/go.mod h1:+uKXf+4Djp6Md1KODXJxgGQPKngRmWyn10oCKFzNHOQ=
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github.com/russross/blackfriday v1.5.1 h1:B8ZN6pD4PVofmlDCDUdELeYrbsVIDM/bpjW3v3zgcRc=
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github.com/russross/blackfriday v1.5.1/go.mod h1:JO/DiYxRf+HjHt06OyowR9PTA263kcR/rfWxYHBV53g=
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github.com/russross/blackfriday v2.0.0+incompatible h1:cBXrhZNUf9C+La9/YpS+UHpUT8YD6Td9ZMSU9APFcsk=
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github.com/russross/blackfriday v2.0.0+incompatible/go.mod h1:JO/DiYxRf+HjHt06OyowR9PTA263kcR/rfWxYHBV53g=
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github.com/saintfish/chardet v0.0.0-20120816061221-3af4cd4741ca h1:NugYot0LIVPxTvN8n+Kvkn6TrbMyxQiuvKdEwFdR9vI=
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github.com/saintfish/chardet v0.0.0-20120816061221-3af4cd4741ca/go.mod h1:uugorj2VCxiV1x+LzaIdVa9b4S4qGAcH6cbhh4qVxOU=
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github.com/shazow/rateio v0.0.0-20150116013248-e8e00881e5c1 h1:Lx3BlDGFElJt4u/zKc9A3BuGYbQAGlEFyPuUA3jeMD0=
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github.com/shazow/rateio v0.0.0-20150116013248-e8e00881e5c1/go.mod h1:vt2jWY/3Qw1bIzle5thrJWucsLuuX9iUNnp20CqCciI=
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github.com/shazow/ssh-chat v0.0.0-20171012174035-2078e1381991 h1:PQiUTDzUC5EUh0vNurK7KQS22zlKqLLOFn+K9nJXDQQ=
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github.com/shazow/ssh-chat v0.0.0-20171012174035-2078e1381991/go.mod h1:KwtnpMClmrXsHCKTbRui5xBUNt17n1GGrGhdiw2KcoY=
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github.com/shurcooL/sanitized_anchor_name v0.0.0-20170918181015-86672fcb3f95 h1:/vdW8Cb7EXrkqWGufVMES1OH2sU9gKVb2n9/1y5NMBY=
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github.com/shurcooL/sanitized_anchor_name v0.0.0-20170918181015-86672fcb3f95/go.mod h1:1NzhyTcUVG4SuEtjjoZeVRXNmyL/1OwPU0+IJeTBvfc=
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github.com/sirupsen/logrus v0.0.0-20180213143110-8c0189d9f6bb h1:eKjx20EiekBRT2tjZ0XEdKpftfPJQwiavtFshwTyqf0=
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github.com/sirupsen/logrus v0.0.0-20180213143110-8c0189d9f6bb/go.mod h1:pMByvHTf9Beacp5x1UXfOR9xyW/9antXMhjMPG0dEzc=
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github.com/smartystreets/assertions v0.0.0-20180803164922-886ec427f6b9 h1:lXQ+j+KwZcbwrbgU0Rp4Eglg3EJLHbuZU3BbOqAGBmg=
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@ -1,30 +1,18 @@
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sudo: false
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# Travis CI (http://travis-ci.org/) is a continuous integration service for
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# open source projects. This file configures it to run unit tests for
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# blackfriday.
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language: go
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go:
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- 1.5.4
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- 1.6.2
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- tip
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matrix:
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include:
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- go: 1.2.2
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script:
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- go get -t -v ./...
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- go test -v -race ./...
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- go: 1.3.3
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script:
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- go get -t -v ./...
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- go test -v -race ./...
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- go: 1.4.3
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script:
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- go get -t -v ./...
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- go test -v -race ./...
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allow_failures:
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- go: tip
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fast_finish: true
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- 1.5
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- 1.6
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- 1.7
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install:
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- # Do nothing. This is needed to prevent default install action "go get -t -v ./..." from happening here (we want it to happen inside script step).
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- go get -d -t -v ./...
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- go build -v ./...
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script:
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- go get -t -v ./...
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- diff -u <(echo -n) <(gofmt -d -s .)
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- go tool vet .
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- go test -v -race ./...
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- go test -v ./...
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- go test -run=^$ -bench=BenchmarkReference -benchmem
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@ -1,6 +1,4 @@
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Blackfriday
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[![Build Status][BuildSVG]][BuildURL]
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[![Godoc][GodocV2SVG]][GodocV2URL]
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Blackfriday [](https://travis-ci.org/russross/blackfriday)
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===========
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Blackfriday is a [Markdown][1] processor implemented in [Go][2]. It
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@ -18,27 +16,27 @@ It started as a translation from C of [Sundown][3].
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Installation
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------------
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Blackfriday is compatible with any modern Go release. With Go and git installed:
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Blackfriday is compatible with any modern Go release. With Go 1.7 and git
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installed:
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go get -u gopkg.in/russross/blackfriday.v2
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go get gopkg.in/russross/blackfriday.v2
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will download, compile, and install the package into your `$GOPATH` directory
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hierarchy.
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will download, compile, and install the package into your `$GOPATH`
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directory hierarchy. Alternatively, you can achieve the same if you
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import it into a project:
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import "gopkg.in/russross/blackfriday.v2"
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and `go get` without parameters.
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Versions
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--------
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Currently maintained and recommended version of Blackfriday is `v2`. It's being
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developed on its own branch: https://github.com/russross/blackfriday/tree/v2 and the
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documentation is available at
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https://godoc.org/gopkg.in/russross/blackfriday.v2.
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It is `go get`-able via via [gopkg.in][6] at `gopkg.in/russross/blackfriday.v2`,
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but we highly recommend using package management tool like [dep][7] or
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[Glide][8] and make use of semantic versioning. With package management you
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should import `github.com/russross/blackfriday` and specify that you're using
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version 2.0.0.
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developed on its own branch: https://github.com/russross/blackfriday/v2. You
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should install and import it via [gopkg.in][6] at
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`gopkg.in/russross/blackfriday.v2`.
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Version 2 offers a number of improvements over v1:
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@ -58,43 +56,9 @@ Potential drawbacks:
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v2. See issue [#348](https://github.com/russross/blackfriday/issues/348) for
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tracking.
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If you are still interested in the legacy `v1`, you can import it from
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`github.com/russross/blackfriday`. Documentation for the legacy v1 can be found
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here: https://godoc.org/github.com/russross/blackfriday
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### Known issue with `dep`
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There is a known problem with using Blackfriday v1 _transitively_ and `dep`.
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Currently `dep` prioritizes semver versions over anything else, and picks the
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latest one, plus it does not apply a `[[constraint]]` specifier to transitively
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pulled in packages. So if you're using something that uses Blackfriday v1, but
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that something does not use `dep` yet, you will get Blackfriday v2 pulled in and
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your first dependency will fail to build.
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There are couple of fixes for it, documented here:
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https://github.com/golang/dep/blob/master/docs/FAQ.md#how-do-i-constrain-a-transitive-dependencys-version
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Meanwhile, `dep` team is working on a more general solution to the constraints
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on transitive dependencies problem: https://github.com/golang/dep/issues/1124.
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Usage
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-----
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### v1
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For basic usage, it is as simple as getting your input into a byte
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slice and calling:
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output := blackfriday.MarkdownBasic(input)
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This renders it with no extensions enabled. To get a more useful
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feature set, use this instead:
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output := blackfriday.MarkdownCommon(input)
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### v2
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For the most sensible markdown processing, it is as simple as getting your input
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into a byte slice and calling:
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@ -121,7 +85,7 @@ Here's an example of simple usage of Blackfriday together with Bluemonday:
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```go
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import (
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"github.com/microcosm-cc/bluemonday"
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"gopkg.in/russross/blackfriday.v2"
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"github.com/russross/blackfriday"
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)
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// ...
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@ -129,21 +93,11 @@ unsafe := blackfriday.Run(input)
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html := bluemonday.UGCPolicy().SanitizeBytes(unsafe)
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```
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### Custom options, v1
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If you want to customize the set of options, first get a renderer
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(currently only the HTML output engine), then use it to
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call the more general `Markdown` function. For examples, see the
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implementations of `MarkdownBasic` and `MarkdownCommon` in
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`markdown.go`.
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### Custom options, v2
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### Custom options
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If you want to customize the set of options, use `blackfriday.WithExtensions`,
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`blackfriday.WithRenderer` and `blackfriday.WithRefOverride`.
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### `blackfriday-tool`
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You can also check out `blackfriday-tool` for a more complete example
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of how to use it. Download and install it using:
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@ -163,22 +117,6 @@ installed in `$GOPATH/bin`. This is a statically-linked binary that
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can be copied to wherever you need it without worrying about
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dependencies and library versions.
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|
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### Sanitized anchor names
|
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Blackfriday includes an algorithm for creating sanitized anchor names
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corresponding to a given input text. This algorithm is used to create
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anchors for headings when `EXTENSION_AUTO_HEADER_IDS` is enabled. The
|
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algorithm has a specification, so that other packages can create
|
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compatible anchor names and links to those anchors.
|
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|
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The specification is located at https://godoc.org/github.com/russross/blackfriday#hdr-Sanitized_Anchor_Names.
|
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|
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[`SanitizedAnchorName`](https://godoc.org/github.com/russross/blackfriday#SanitizedAnchorName) exposes this functionality, and can be used to
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create compatible links to the anchor names generated by blackfriday.
|
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This algorithm is also implemented in a small standalone package at
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[`github.com/shurcooL/sanitized_anchor_name`](https://godoc.org/github.com/shurcooL/sanitized_anchor_name). It can be useful for clients
|
||||
that want a small package and don't need full functionality of blackfriday.
|
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|
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|
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Features
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--------
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@ -255,15 +193,6 @@ implements the following extensions:
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You can use 3 or more backticks to mark the beginning of the
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block, and the same number to mark the end of the block.
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To preserve classes of fenced code blocks while using the bluemonday
|
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HTML sanitizer, use the following policy:
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``` go
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p := bluemonday.UGCPolicy()
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p.AllowAttrs("class").Matching(regexp.MustCompile("^language-[a-zA-Z0-9]+$")).OnElements("code")
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html := p.SanitizeBytes(unsafe)
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```
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* **Definition lists**. A simple definition list is made of a single-line
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term followed by a colon and the definition for that term.
|
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|
@ -289,10 +218,8 @@ implements the following extensions:
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* **Strikethrough**. Use two tildes (`~~`) to mark text that
|
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should be crossed out.
|
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|
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* **Hard line breaks**. With this extension enabled (it is off by
|
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default in the `MarkdownBasic` and `MarkdownCommon` convenience
|
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functions), newlines in the input translate into line breaks in
|
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the output.
|
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* **Hard line breaks**. With this extension enabled newlines in the input
|
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translate into line breaks in the output. This extension is off by default.
|
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|
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* **Smart quotes**. Smartypants-style punctuation substitution is
|
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supported, turning normal double- and single-quote marks into
|
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|
|
@ -332,14 +259,14 @@ are a few of note:
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renders output as LaTeX.
|
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|
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|
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TODO
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Todo
|
||||
----
|
||||
|
||||
* More unit testing
|
||||
* Improve Unicode support. It does not understand all Unicode
|
||||
* Improve unicode support. It does not understand all unicode
|
||||
rules (about what constitutes a letter, a punctuation symbol,
|
||||
etc.), so it may fail to detect word boundaries correctly in
|
||||
some instances. It is safe on all UTF-8 input.
|
||||
some instances. It is safe on all utf-8 input.
|
||||
|
||||
|
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License
|
||||
|
|
@ -354,10 +281,3 @@ License
|
|||
[4]: https://godoc.org/gopkg.in/russross/blackfriday.v2#Parse "Parse func"
|
||||
[5]: https://github.com/microcosm-cc/bluemonday "Bluemonday"
|
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[6]: https://labix.org/gopkg.in "gopkg.in"
|
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[7]: https://github.com/golang/dep/ "dep"
|
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[8]: https://github.com/Masterminds/glide "Glide"
|
||||
|
||||
[BuildSVG]: https://travis-ci.org/russross/blackfriday.svg?branch=master
|
||||
[BuildURL]: https://travis-ci.org/russross/blackfriday
|
||||
[GodocV2SVG]: https://godoc.org/gopkg.in/russross/blackfriday.v2?status.svg
|
||||
[GodocV2URL]: https://godoc.org/gopkg.in/russross/blackfriday.v2
|
||||
|
|
|
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File diff suppressed because it is too large
Load Diff
|
|
@ -1,32 +1,18 @@
|
|||
// Package blackfriday is a Markdown processor.
|
||||
// Package blackfriday is a markdown processor.
|
||||
//
|
||||
// It translates plain text with simple formatting rules into HTML or LaTeX.
|
||||
// It translates plain text with simple formatting rules into an AST, which can
|
||||
// then be further processed to HTML (provided by Blackfriday itself) or other
|
||||
// formats (provided by the community).
|
||||
//
|
||||
// Sanitized Anchor Names
|
||||
// The simplest way to invoke Blackfriday is to call the Run function. It will
|
||||
// take a text input and produce a text output in HTML (or other format).
|
||||
//
|
||||
// Blackfriday includes an algorithm for creating sanitized anchor names
|
||||
// corresponding to a given input text. This algorithm is used to create
|
||||
// anchors for headings when EXTENSION_AUTO_HEADER_IDS is enabled. The
|
||||
// algorithm is specified below, so that other packages can create
|
||||
// compatible anchor names and links to those anchors.
|
||||
// A slightly more sophisticated way to use Blackfriday is to create a Markdown
|
||||
// processor and to call Parse, which returns a syntax tree for the input
|
||||
// document. You can leverage Blackfriday's parsing for content extraction from
|
||||
// markdown documents. You can assign a custom renderer and set various options
|
||||
// to the Markdown processor.
|
||||
//
|
||||
// The algorithm iterates over the input text, interpreted as UTF-8,
|
||||
// one Unicode code point (rune) at a time. All runes that are letters (category L)
|
||||
// or numbers (category N) are considered valid characters. They are mapped to
|
||||
// lower case, and included in the output. All other runes are considered
|
||||
// invalid characters. Invalid characters that preceed the first valid character,
|
||||
// as well as invalid character that follow the last valid character
|
||||
// are dropped completely. All other sequences of invalid characters
|
||||
// between two valid characters are replaced with a single dash character '-'.
|
||||
//
|
||||
// SanitizedAnchorName exposes this functionality, and can be used to
|
||||
// create compatible links to the anchor names generated by blackfriday.
|
||||
// This algorithm is also implemented in a small standalone package at
|
||||
// github.com/shurcooL/sanitized_anchor_name. It can be useful for clients
|
||||
// that want a small package and don't need full functionality of blackfriday.
|
||||
// If you're interested in calling Blackfriday from command line, see
|
||||
// https://github.com/russross/blackfriday-tool.
|
||||
package blackfriday
|
||||
|
||||
// NOTE: Keep Sanitized Anchor Name algorithm in sync with package
|
||||
// github.com/shurcooL/sanitized_anchor_name.
|
||||
// Otherwise, users of sanitized_anchor_name will get anchor names
|
||||
// that are incompatible with those generated by blackfriday.
|
||||
|
|
|
|||
|
|
@ -0,0 +1,34 @@
|
|||
package blackfriday
|
||||
|
||||
import (
|
||||
"html"
|
||||
"io"
|
||||
)
|
||||
|
||||
var htmlEscaper = [256][]byte{
|
||||
'&': []byte("&"),
|
||||
'<': []byte("<"),
|
||||
'>': []byte(">"),
|
||||
'"': []byte("""),
|
||||
}
|
||||
|
||||
func escapeHTML(w io.Writer, s []byte) {
|
||||
var start, end int
|
||||
for end < len(s) {
|
||||
escSeq := htmlEscaper[s[end]]
|
||||
if escSeq != nil {
|
||||
w.Write(s[start:end])
|
||||
w.Write(escSeq)
|
||||
start = end + 1
|
||||
}
|
||||
end++
|
||||
}
|
||||
if start < len(s) && end <= len(s) {
|
||||
w.Write(s[start:end])
|
||||
}
|
||||
}
|
||||
|
||||
func escLink(w io.Writer, text []byte) {
|
||||
unesc := html.UnescapeString(string(text))
|
||||
escapeHTML(w, []byte(unesc))
|
||||
}
|
||||
File diff suppressed because it is too large
Load Diff
File diff suppressed because it is too large
Load Diff
|
|
@ -1,332 +0,0 @@
|
|||
//
|
||||
// Blackfriday Markdown Processor
|
||||
// Available at http://github.com/russross/blackfriday
|
||||
//
|
||||
// Copyright © 2011 Russ Ross <russ@russross.com>.
|
||||
// Distributed under the Simplified BSD License.
|
||||
// See README.md for details.
|
||||
//
|
||||
|
||||
//
|
||||
//
|
||||
// LaTeX rendering backend
|
||||
//
|
||||
//
|
||||
|
||||
package blackfriday
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
)
|
||||
|
||||
// Latex is a type that implements the Renderer interface for LaTeX output.
|
||||
//
|
||||
// Do not create this directly, instead use the LatexRenderer function.
|
||||
type Latex struct {
|
||||
}
|
||||
|
||||
// LatexRenderer creates and configures a Latex object, which
|
||||
// satisfies the Renderer interface.
|
||||
//
|
||||
// flags is a set of LATEX_* options ORed together (currently no such options
|
||||
// are defined).
|
||||
func LatexRenderer(flags int) Renderer {
|
||||
return &Latex{}
|
||||
}
|
||||
|
||||
func (options *Latex) GetFlags() int {
|
||||
return 0
|
||||
}
|
||||
|
||||
// render code chunks using verbatim, or listings if we have a language
|
||||
func (options *Latex) BlockCode(out *bytes.Buffer, text []byte, lang string) {
|
||||
if lang == "" {
|
||||
out.WriteString("\n\\begin{verbatim}\n")
|
||||
} else {
|
||||
out.WriteString("\n\\begin{lstlisting}[language=")
|
||||
out.WriteString(lang)
|
||||
out.WriteString("]\n")
|
||||
}
|
||||
out.Write(text)
|
||||
if lang == "" {
|
||||
out.WriteString("\n\\end{verbatim}\n")
|
||||
} else {
|
||||
out.WriteString("\n\\end{lstlisting}\n")
|
||||
}
|
||||
}
|
||||
|
||||
func (options *Latex) TitleBlock(out *bytes.Buffer, text []byte) {
|
||||
|
||||
}
|
||||
|
||||
func (options *Latex) BlockQuote(out *bytes.Buffer, text []byte) {
|
||||
out.WriteString("\n\\begin{quotation}\n")
|
||||
out.Write(text)
|
||||
out.WriteString("\n\\end{quotation}\n")
|
||||
}
|
||||
|
||||
func (options *Latex) BlockHtml(out *bytes.Buffer, text []byte) {
|
||||
// a pretty lame thing to do...
|
||||
out.WriteString("\n\\begin{verbatim}\n")
|
||||
out.Write(text)
|
||||
out.WriteString("\n\\end{verbatim}\n")
|
||||
}
|
||||
|
||||
func (options *Latex) Header(out *bytes.Buffer, text func() bool, level int, id string) {
|
||||
marker := out.Len()
|
||||
|
||||
switch level {
|
||||
case 1:
|
||||
out.WriteString("\n\\section{")
|
||||
case 2:
|
||||
out.WriteString("\n\\subsection{")
|
||||
case 3:
|
||||
out.WriteString("\n\\subsubsection{")
|
||||
case 4:
|
||||
out.WriteString("\n\\paragraph{")
|
||||
case 5:
|
||||
out.WriteString("\n\\subparagraph{")
|
||||
case 6:
|
||||
out.WriteString("\n\\textbf{")
|
||||
}
|
||||
if !text() {
|
||||
out.Truncate(marker)
|
||||
return
|
||||
}
|
||||
out.WriteString("}\n")
|
||||
}
|
||||
|
||||
func (options *Latex) HRule(out *bytes.Buffer) {
|
||||
out.WriteString("\n\\HRule\n")
|
||||
}
|
||||
|
||||
func (options *Latex) List(out *bytes.Buffer, text func() bool, flags int) {
|
||||
marker := out.Len()
|
||||
if flags&LIST_TYPE_ORDERED != 0 {
|
||||
out.WriteString("\n\\begin{enumerate}\n")
|
||||
} else {
|
||||
out.WriteString("\n\\begin{itemize}\n")
|
||||
}
|
||||
if !text() {
|
||||
out.Truncate(marker)
|
||||
return
|
||||
}
|
||||
if flags&LIST_TYPE_ORDERED != 0 {
|
||||
out.WriteString("\n\\end{enumerate}\n")
|
||||
} else {
|
||||
out.WriteString("\n\\end{itemize}\n")
|
||||
}
|
||||
}
|
||||
|
||||
func (options *Latex) ListItem(out *bytes.Buffer, text []byte, flags int) {
|
||||
out.WriteString("\n\\item ")
|
||||
out.Write(text)
|
||||
}
|
||||
|
||||
func (options *Latex) Paragraph(out *bytes.Buffer, text func() bool) {
|
||||
marker := out.Len()
|
||||
out.WriteString("\n")
|
||||
if !text() {
|
||||
out.Truncate(marker)
|
||||
return
|
||||
}
|
||||
out.WriteString("\n")
|
||||
}
|
||||
|
||||
func (options *Latex) Table(out *bytes.Buffer, header []byte, body []byte, columnData []int) {
|
||||
out.WriteString("\n\\begin{tabular}{")
|
||||
for _, elt := range columnData {
|
||||
switch elt {
|
||||
case TABLE_ALIGNMENT_LEFT:
|
||||
out.WriteByte('l')
|
||||
case TABLE_ALIGNMENT_RIGHT:
|
||||
out.WriteByte('r')
|
||||
default:
|
||||
out.WriteByte('c')
|
||||
}
|
||||
}
|
||||
out.WriteString("}\n")
|
||||
out.Write(header)
|
||||
out.WriteString(" \\\\\n\\hline\n")
|
||||
out.Write(body)
|
||||
out.WriteString("\n\\end{tabular}\n")
|
||||
}
|
||||
|
||||
func (options *Latex) TableRow(out *bytes.Buffer, text []byte) {
|
||||
if out.Len() > 0 {
|
||||
out.WriteString(" \\\\\n")
|
||||
}
|
||||
out.Write(text)
|
||||
}
|
||||
|
||||
func (options *Latex) TableHeaderCell(out *bytes.Buffer, text []byte, align int) {
|
||||
if out.Len() > 0 {
|
||||
out.WriteString(" & ")
|
||||
}
|
||||
out.Write(text)
|
||||
}
|
||||
|
||||
func (options *Latex) TableCell(out *bytes.Buffer, text []byte, align int) {
|
||||
if out.Len() > 0 {
|
||||
out.WriteString(" & ")
|
||||
}
|
||||
out.Write(text)
|
||||
}
|
||||
|
||||
// TODO: this
|
||||
func (options *Latex) Footnotes(out *bytes.Buffer, text func() bool) {
|
||||
|
||||
}
|
||||
|
||||
func (options *Latex) FootnoteItem(out *bytes.Buffer, name, text []byte, flags int) {
|
||||
|
||||
}
|
||||
|
||||
func (options *Latex) AutoLink(out *bytes.Buffer, link []byte, kind int) {
|
||||
out.WriteString("\\href{")
|
||||
if kind == LINK_TYPE_EMAIL {
|
||||
out.WriteString("mailto:")
|
||||
}
|
||||
out.Write(link)
|
||||
out.WriteString("}{")
|
||||
out.Write(link)
|
||||
out.WriteString("}")
|
||||
}
|
||||
|
||||
func (options *Latex) CodeSpan(out *bytes.Buffer, text []byte) {
|
||||
out.WriteString("\\texttt{")
|
||||
escapeSpecialChars(out, text)
|
||||
out.WriteString("}")
|
||||
}
|
||||
|
||||
func (options *Latex) DoubleEmphasis(out *bytes.Buffer, text []byte) {
|
||||
out.WriteString("\\textbf{")
|
||||
out.Write(text)
|
||||
out.WriteString("}")
|
||||
}
|
||||
|
||||
func (options *Latex) Emphasis(out *bytes.Buffer, text []byte) {
|
||||
out.WriteString("\\textit{")
|
||||
out.Write(text)
|
||||
out.WriteString("}")
|
||||
}
|
||||
|
||||
func (options *Latex) Image(out *bytes.Buffer, link []byte, title []byte, alt []byte) {
|
||||
if bytes.HasPrefix(link, []byte("http://")) || bytes.HasPrefix(link, []byte("https://")) {
|
||||
// treat it like a link
|
||||
out.WriteString("\\href{")
|
||||
out.Write(link)
|
||||
out.WriteString("}{")
|
||||
out.Write(alt)
|
||||
out.WriteString("}")
|
||||
} else {
|
||||
out.WriteString("\\includegraphics{")
|
||||
out.Write(link)
|
||||
out.WriteString("}")
|
||||
}
|
||||
}
|
||||
|
||||
func (options *Latex) LineBreak(out *bytes.Buffer) {
|
||||
out.WriteString(" \\\\\n")
|
||||
}
|
||||
|
||||
func (options *Latex) Link(out *bytes.Buffer, link []byte, title []byte, content []byte) {
|
||||
out.WriteString("\\href{")
|
||||
out.Write(link)
|
||||
out.WriteString("}{")
|
||||
out.Write(content)
|
||||
out.WriteString("}")
|
||||
}
|
||||
|
||||
func (options *Latex) RawHtmlTag(out *bytes.Buffer, tag []byte) {
|
||||
}
|
||||
|
||||
func (options *Latex) TripleEmphasis(out *bytes.Buffer, text []byte) {
|
||||
out.WriteString("\\textbf{\\textit{")
|
||||
out.Write(text)
|
||||
out.WriteString("}}")
|
||||
}
|
||||
|
||||
func (options *Latex) StrikeThrough(out *bytes.Buffer, text []byte) {
|
||||
out.WriteString("\\sout{")
|
||||
out.Write(text)
|
||||
out.WriteString("}")
|
||||
}
|
||||
|
||||
// TODO: this
|
||||
func (options *Latex) FootnoteRef(out *bytes.Buffer, ref []byte, id int) {
|
||||
|
||||
}
|
||||
|
||||
func needsBackslash(c byte) bool {
|
||||
for _, r := range []byte("_{}%$&\\~#") {
|
||||
if c == r {
|
||||
return true
|
||||
}
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
func escapeSpecialChars(out *bytes.Buffer, text []byte) {
|
||||
for i := 0; i < len(text); i++ {
|
||||
// directly copy normal characters
|
||||
org := i
|
||||
|
||||
for i < len(text) && !needsBackslash(text[i]) {
|
||||
i++
|
||||
}
|
||||
if i > org {
|
||||
out.Write(text[org:i])
|
||||
}
|
||||
|
||||
// escape a character
|
||||
if i >= len(text) {
|
||||
break
|
||||
}
|
||||
out.WriteByte('\\')
|
||||
out.WriteByte(text[i])
|
||||
}
|
||||
}
|
||||
|
||||
func (options *Latex) Entity(out *bytes.Buffer, entity []byte) {
|
||||
// TODO: convert this into a unicode character or something
|
||||
out.Write(entity)
|
||||
}
|
||||
|
||||
func (options *Latex) NormalText(out *bytes.Buffer, text []byte) {
|
||||
escapeSpecialChars(out, text)
|
||||
}
|
||||
|
||||
// header and footer
|
||||
func (options *Latex) DocumentHeader(out *bytes.Buffer) {
|
||||
out.WriteString("\\documentclass{article}\n")
|
||||
out.WriteString("\n")
|
||||
out.WriteString("\\usepackage{graphicx}\n")
|
||||
out.WriteString("\\usepackage{listings}\n")
|
||||
out.WriteString("\\usepackage[margin=1in]{geometry}\n")
|
||||
out.WriteString("\\usepackage[utf8]{inputenc}\n")
|
||||
out.WriteString("\\usepackage{verbatim}\n")
|
||||
out.WriteString("\\usepackage[normalem]{ulem}\n")
|
||||
out.WriteString("\\usepackage{hyperref}\n")
|
||||
out.WriteString("\n")
|
||||
out.WriteString("\\hypersetup{colorlinks,%\n")
|
||||
out.WriteString(" citecolor=black,%\n")
|
||||
out.WriteString(" filecolor=black,%\n")
|
||||
out.WriteString(" linkcolor=black,%\n")
|
||||
out.WriteString(" urlcolor=black,%\n")
|
||||
out.WriteString(" pdfstartview=FitH,%\n")
|
||||
out.WriteString(" breaklinks=true,%\n")
|
||||
out.WriteString(" pdfauthor={Blackfriday Markdown Processor v")
|
||||
out.WriteString(VERSION)
|
||||
out.WriteString("}}\n")
|
||||
out.WriteString("\n")
|
||||
out.WriteString("\\newcommand{\\HRule}{\\rule{\\linewidth}{0.5mm}}\n")
|
||||
out.WriteString("\\addtolength{\\parskip}{0.5\\baselineskip}\n")
|
||||
out.WriteString("\\parindent=0pt\n")
|
||||
out.WriteString("\n")
|
||||
out.WriteString("\\begin{document}\n")
|
||||
}
|
||||
|
||||
func (options *Latex) DocumentFooter(out *bytes.Buffer) {
|
||||
out.WriteString("\n\\end{document}\n")
|
||||
}
|
||||
|
|
@ -1,216 +1,181 @@
|
|||
//
|
||||
// Blackfriday Markdown Processor
|
||||
// Available at http://github.com/russross/blackfriday
|
||||
//
|
||||
// Copyright © 2011 Russ Ross <russ@russross.com>.
|
||||
// Distributed under the Simplified BSD License.
|
||||
// See README.md for details.
|
||||
//
|
||||
|
||||
//
|
||||
//
|
||||
// Markdown parsing and processing
|
||||
//
|
||||
//
|
||||
|
||||
package blackfriday
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"fmt"
|
||||
"io"
|
||||
"strings"
|
||||
"unicode/utf8"
|
||||
)
|
||||
|
||||
const VERSION = "1.5"
|
||||
//
|
||||
// Markdown parsing and processing
|
||||
//
|
||||
|
||||
// Version string of the package. Appears in the rendered document when
|
||||
// CompletePage flag is on.
|
||||
const Version = "2.0"
|
||||
|
||||
// Extensions is a bitwise or'ed collection of enabled Blackfriday's
|
||||
// extensions.
|
||||
type Extensions int
|
||||
|
||||
// These are the supported markdown parsing extensions.
|
||||
// OR these values together to select multiple extensions.
|
||||
const (
|
||||
EXTENSION_NO_INTRA_EMPHASIS = 1 << iota // ignore emphasis markers inside words
|
||||
EXTENSION_TABLES // render tables
|
||||
EXTENSION_FENCED_CODE // render fenced code blocks
|
||||
EXTENSION_AUTOLINK // detect embedded URLs that are not explicitly marked
|
||||
EXTENSION_STRIKETHROUGH // strikethrough text using ~~test~~
|
||||
EXTENSION_LAX_HTML_BLOCKS // loosen up HTML block parsing rules
|
||||
EXTENSION_SPACE_HEADERS // be strict about prefix header rules
|
||||
EXTENSION_HARD_LINE_BREAK // translate newlines into line breaks
|
||||
EXTENSION_TAB_SIZE_EIGHT // expand tabs to eight spaces instead of four
|
||||
EXTENSION_FOOTNOTES // Pandoc-style footnotes
|
||||
EXTENSION_NO_EMPTY_LINE_BEFORE_BLOCK // No need to insert an empty line to start a (code, quote, ordered list, unordered list) block
|
||||
EXTENSION_HEADER_IDS // specify header IDs with {#id}
|
||||
EXTENSION_TITLEBLOCK // Titleblock ala pandoc
|
||||
EXTENSION_AUTO_HEADER_IDS // Create the header ID from the text
|
||||
EXTENSION_BACKSLASH_LINE_BREAK // translate trailing backslashes into line breaks
|
||||
EXTENSION_DEFINITION_LISTS // render definition lists
|
||||
EXTENSION_JOIN_LINES // delete newline and join lines
|
||||
NoExtensions Extensions = 0
|
||||
NoIntraEmphasis Extensions = 1 << iota // Ignore emphasis markers inside words
|
||||
Tables // Render tables
|
||||
FencedCode // Render fenced code blocks
|
||||
Autolink // Detect embedded URLs that are not explicitly marked
|
||||
Strikethrough // Strikethrough text using ~~test~~
|
||||
LaxHTMLBlocks // Loosen up HTML block parsing rules
|
||||
SpaceHeadings // Be strict about prefix heading rules
|
||||
HardLineBreak // Translate newlines into line breaks
|
||||
TabSizeEight // Expand tabs to eight spaces instead of four
|
||||
Footnotes // Pandoc-style footnotes
|
||||
NoEmptyLineBeforeBlock // No need to insert an empty line to start a (code, quote, ordered list, unordered list) block
|
||||
HeadingIDs // specify heading IDs with {#id}
|
||||
Titleblock // Titleblock ala pandoc
|
||||
AutoHeadingIDs // Create the heading ID from the text
|
||||
BackslashLineBreak // Translate trailing backslashes into line breaks
|
||||
DefinitionLists // Render definition lists
|
||||
|
||||
commonHtmlFlags = 0 |
|
||||
HTML_USE_XHTML |
|
||||
HTML_USE_SMARTYPANTS |
|
||||
HTML_SMARTYPANTS_FRACTIONS |
|
||||
HTML_SMARTYPANTS_DASHES |
|
||||
HTML_SMARTYPANTS_LATEX_DASHES
|
||||
CommonHTMLFlags HTMLFlags = UseXHTML | Smartypants |
|
||||
SmartypantsFractions | SmartypantsDashes | SmartypantsLatexDashes
|
||||
|
||||
commonExtensions = 0 |
|
||||
EXTENSION_NO_INTRA_EMPHASIS |
|
||||
EXTENSION_TABLES |
|
||||
EXTENSION_FENCED_CODE |
|
||||
EXTENSION_AUTOLINK |
|
||||
EXTENSION_STRIKETHROUGH |
|
||||
EXTENSION_SPACE_HEADERS |
|
||||
EXTENSION_HEADER_IDS |
|
||||
EXTENSION_BACKSLASH_LINE_BREAK |
|
||||
EXTENSION_DEFINITION_LISTS
|
||||
CommonExtensions Extensions = NoIntraEmphasis | Tables | FencedCode |
|
||||
Autolink | Strikethrough | SpaceHeadings | HeadingIDs |
|
||||
BackslashLineBreak | DefinitionLists
|
||||
)
|
||||
|
||||
// These are the possible flag values for the link renderer.
|
||||
// Only a single one of these values will be used; they are not ORed together.
|
||||
// These are mostly of interest if you are writing a new output format.
|
||||
const (
|
||||
LINK_TYPE_NOT_AUTOLINK = iota
|
||||
LINK_TYPE_NORMAL
|
||||
LINK_TYPE_EMAIL
|
||||
)
|
||||
// ListType contains bitwise or'ed flags for list and list item objects.
|
||||
type ListType int
|
||||
|
||||
// These are the possible flag values for the ListItem renderer.
|
||||
// Multiple flag values may be ORed together.
|
||||
// These are mostly of interest if you are writing a new output format.
|
||||
const (
|
||||
LIST_TYPE_ORDERED = 1 << iota
|
||||
LIST_TYPE_DEFINITION
|
||||
LIST_TYPE_TERM
|
||||
LIST_ITEM_CONTAINS_BLOCK
|
||||
LIST_ITEM_BEGINNING_OF_LIST
|
||||
LIST_ITEM_END_OF_LIST
|
||||
ListTypeOrdered ListType = 1 << iota
|
||||
ListTypeDefinition
|
||||
ListTypeTerm
|
||||
|
||||
ListItemContainsBlock
|
||||
ListItemBeginningOfList // TODO: figure out if this is of any use now
|
||||
ListItemEndOfList
|
||||
)
|
||||
|
||||
// CellAlignFlags holds a type of alignment in a table cell.
|
||||
type CellAlignFlags int
|
||||
|
||||
// These are the possible flag values for the table cell renderer.
|
||||
// Only a single one of these values will be used; they are not ORed together.
|
||||
// These are mostly of interest if you are writing a new output format.
|
||||
const (
|
||||
TABLE_ALIGNMENT_LEFT = 1 << iota
|
||||
TABLE_ALIGNMENT_RIGHT
|
||||
TABLE_ALIGNMENT_CENTER = (TABLE_ALIGNMENT_LEFT | TABLE_ALIGNMENT_RIGHT)
|
||||
TableAlignmentLeft CellAlignFlags = 1 << iota
|
||||
TableAlignmentRight
|
||||
TableAlignmentCenter = (TableAlignmentLeft | TableAlignmentRight)
|
||||
)
|
||||
|
||||
// The size of a tab stop.
|
||||
const (
|
||||
TAB_SIZE_DEFAULT = 4
|
||||
TAB_SIZE_EIGHT = 8
|
||||
TabSizeDefault = 4
|
||||
TabSizeDouble = 8
|
||||
)
|
||||
|
||||
// blockTags is a set of tags that are recognized as HTML block tags.
|
||||
// Any of these can be included in markdown text without special escaping.
|
||||
var blockTags = map[string]struct{}{
|
||||
"blockquote": {},
|
||||
"del": {},
|
||||
"div": {},
|
||||
"dl": {},
|
||||
"fieldset": {},
|
||||
"form": {},
|
||||
"h1": {},
|
||||
"h2": {},
|
||||
"h3": {},
|
||||
"h4": {},
|
||||
"h5": {},
|
||||
"h6": {},
|
||||
"iframe": {},
|
||||
"ins": {},
|
||||
"math": {},
|
||||
"noscript": {},
|
||||
"ol": {},
|
||||
"pre": {},
|
||||
"p": {},
|
||||
"script": {},
|
||||
"style": {},
|
||||
"table": {},
|
||||
"ul": {},
|
||||
"blockquote": struct{}{},
|
||||
"del": struct{}{},
|
||||
"div": struct{}{},
|
||||
"dl": struct{}{},
|
||||
"fieldset": struct{}{},
|
||||
"form": struct{}{},
|
||||
"h1": struct{}{},
|
||||
"h2": struct{}{},
|
||||
"h3": struct{}{},
|
||||
"h4": struct{}{},
|
||||
"h5": struct{}{},
|
||||
"h6": struct{}{},
|
||||
"iframe": struct{}{},
|
||||
"ins": struct{}{},
|
||||
"math": struct{}{},
|
||||
"noscript": struct{}{},
|
||||
"ol": struct{}{},
|
||||
"pre": struct{}{},
|
||||
"p": struct{}{},
|
||||
"script": struct{}{},
|
||||
"style": struct{}{},
|
||||
"table": struct{}{},
|
||||
"ul": struct{}{},
|
||||
|
||||
// HTML5
|
||||
"address": {},
|
||||
"article": {},
|
||||
"aside": {},
|
||||
"canvas": {},
|
||||
"figcaption": {},
|
||||
"figure": {},
|
||||
"footer": {},
|
||||
"header": {},
|
||||
"hgroup": {},
|
||||
"main": {},
|
||||
"nav": {},
|
||||
"output": {},
|
||||
"progress": {},
|
||||
"section": {},
|
||||
"video": {},
|
||||
"address": struct{}{},
|
||||
"article": struct{}{},
|
||||
"aside": struct{}{},
|
||||
"canvas": struct{}{},
|
||||
"figcaption": struct{}{},
|
||||
"figure": struct{}{},
|
||||
"footer": struct{}{},
|
||||
"header": struct{}{},
|
||||
"hgroup": struct{}{},
|
||||
"main": struct{}{},
|
||||
"nav": struct{}{},
|
||||
"output": struct{}{},
|
||||
"progress": struct{}{},
|
||||
"section": struct{}{},
|
||||
"video": struct{}{},
|
||||
}
|
||||
|
||||
// Renderer is the rendering interface.
|
||||
// This is mostly of interest if you are implementing a new rendering format.
|
||||
// Renderer is the rendering interface. This is mostly of interest if you are
|
||||
// implementing a new rendering format.
|
||||
//
|
||||
// When a byte slice is provided, it contains the (rendered) contents of the
|
||||
// element.
|
||||
//
|
||||
// When a callback is provided instead, it will write the contents of the
|
||||
// respective element directly to the output buffer and return true on success.
|
||||
// If the callback returns false, the rendering function should reset the
|
||||
// output buffer as though it had never been called.
|
||||
//
|
||||
// Currently Html and Latex implementations are provided
|
||||
// Only an HTML implementation is provided in this repository, see the README
|
||||
// for external implementations.
|
||||
type Renderer interface {
|
||||
// block-level callbacks
|
||||
BlockCode(out *bytes.Buffer, text []byte, lang string)
|
||||
BlockQuote(out *bytes.Buffer, text []byte)
|
||||
BlockHtml(out *bytes.Buffer, text []byte)
|
||||
Header(out *bytes.Buffer, text func() bool, level int, id string)
|
||||
HRule(out *bytes.Buffer)
|
||||
List(out *bytes.Buffer, text func() bool, flags int)
|
||||
ListItem(out *bytes.Buffer, text []byte, flags int)
|
||||
Paragraph(out *bytes.Buffer, text func() bool)
|
||||
Table(out *bytes.Buffer, header []byte, body []byte, columnData []int)
|
||||
TableRow(out *bytes.Buffer, text []byte)
|
||||
TableHeaderCell(out *bytes.Buffer, text []byte, flags int)
|
||||
TableCell(out *bytes.Buffer, text []byte, flags int)
|
||||
Footnotes(out *bytes.Buffer, text func() bool)
|
||||
FootnoteItem(out *bytes.Buffer, name, text []byte, flags int)
|
||||
TitleBlock(out *bytes.Buffer, text []byte)
|
||||
// RenderNode is the main rendering method. It will be called once for
|
||||
// every leaf node and twice for every non-leaf node (first with
|
||||
// entering=true, then with entering=false). The method should write its
|
||||
// rendition of the node to the supplied writer w.
|
||||
RenderNode(w io.Writer, node *Node, entering bool) WalkStatus
|
||||
|
||||
// Span-level callbacks
|
||||
AutoLink(out *bytes.Buffer, link []byte, kind int)
|
||||
CodeSpan(out *bytes.Buffer, text []byte)
|
||||
DoubleEmphasis(out *bytes.Buffer, text []byte)
|
||||
Emphasis(out *bytes.Buffer, text []byte)
|
||||
Image(out *bytes.Buffer, link []byte, title []byte, alt []byte)
|
||||
LineBreak(out *bytes.Buffer)
|
||||
Link(out *bytes.Buffer, link []byte, title []byte, content []byte)
|
||||
RawHtmlTag(out *bytes.Buffer, tag []byte)
|
||||
TripleEmphasis(out *bytes.Buffer, text []byte)
|
||||
StrikeThrough(out *bytes.Buffer, text []byte)
|
||||
FootnoteRef(out *bytes.Buffer, ref []byte, id int)
|
||||
// RenderHeader is a method that allows the renderer to produce some
|
||||
// content preceding the main body of the output document. The header is
|
||||
// understood in the broad sense here. For example, the default HTML
|
||||
// renderer will write not only the HTML document preamble, but also the
|
||||
// table of contents if it was requested.
|
||||
//
|
||||
// The method will be passed an entire document tree, in case a particular
|
||||
// implementation needs to inspect it to produce output.
|
||||
//
|
||||
// The output should be written to the supplied writer w. If your
|
||||
// implementation has no header to write, supply an empty implementation.
|
||||
RenderHeader(w io.Writer, ast *Node)
|
||||
|
||||
// Low-level callbacks
|
||||
Entity(out *bytes.Buffer, entity []byte)
|
||||
NormalText(out *bytes.Buffer, text []byte)
|
||||
|
||||
// Header and footer
|
||||
DocumentHeader(out *bytes.Buffer)
|
||||
DocumentFooter(out *bytes.Buffer)
|
||||
|
||||
GetFlags() int
|
||||
// RenderFooter is a symmetric counterpart of RenderHeader.
|
||||
RenderFooter(w io.Writer, ast *Node)
|
||||
}
|
||||
|
||||
// Callback functions for inline parsing. One such function is defined
|
||||
// for each character that triggers a response when parsing inline data.
|
||||
type inlineParser func(p *parser, out *bytes.Buffer, data []byte, offset int) int
|
||||
type inlineParser func(p *Markdown, data []byte, offset int) (int, *Node)
|
||||
|
||||
// Parser holds runtime state used by the parser.
|
||||
// This is constructed by the Markdown function.
|
||||
type parser struct {
|
||||
r Renderer
|
||||
refOverride ReferenceOverrideFunc
|
||||
// Markdown is a type that holds extensions and the runtime state used by
|
||||
// Parse, and the renderer. You can not use it directly, construct it with New.
|
||||
type Markdown struct {
|
||||
renderer Renderer
|
||||
referenceOverride ReferenceOverrideFunc
|
||||
refs map[string]*reference
|
||||
inlineCallback [256]inlineParser
|
||||
flags int
|
||||
extensions Extensions
|
||||
nesting int
|
||||
maxNesting int
|
||||
insideLink bool
|
||||
|
|
@ -219,12 +184,17 @@ type parser struct {
|
|||
// presence. If a ref is also a footnote, it's stored both in refs and here
|
||||
// in notes. Slice is nil if footnotes not enabled.
|
||||
notes []*reference
|
||||
notesRecord map[string]struct{}
|
||||
|
||||
doc *Node
|
||||
tip *Node // = doc
|
||||
oldTip *Node
|
||||
lastMatchedContainer *Node // = doc
|
||||
allClosed bool
|
||||
}
|
||||
|
||||
func (p *parser) getRef(refid string) (ref *reference, found bool) {
|
||||
if p.refOverride != nil {
|
||||
r, overridden := p.refOverride(refid)
|
||||
func (p *Markdown) getRef(refid string) (ref *reference, found bool) {
|
||||
if p.referenceOverride != nil {
|
||||
r, overridden := p.referenceOverride(refid)
|
||||
if overridden {
|
||||
if r == nil {
|
||||
return nil, false
|
||||
|
|
@ -232,7 +202,7 @@ func (p *parser) getRef(refid string) (ref *reference, found bool) {
|
|||
return &reference{
|
||||
link: []byte(r.Link),
|
||||
title: []byte(r.Title),
|
||||
noteId: 0,
|
||||
noteID: 0,
|
||||
hasBlock: false,
|
||||
text: []byte(r.Text)}, true
|
||||
}
|
||||
|
|
@ -242,9 +212,34 @@ func (p *parser) getRef(refid string) (ref *reference, found bool) {
|
|||
return ref, found
|
||||
}
|
||||
|
||||
func (p *parser) isFootnote(ref *reference) bool {
|
||||
_, ok := p.notesRecord[string(ref.link)]
|
||||
return ok
|
||||
func (p *Markdown) finalize(block *Node) {
|
||||
above := block.Parent
|
||||
block.open = false
|
||||
p.tip = above
|
||||
}
|
||||
|
||||
func (p *Markdown) addChild(node NodeType, offset uint32) *Node {
|
||||
return p.addExistingChild(NewNode(node), offset)
|
||||
}
|
||||
|
||||
func (p *Markdown) addExistingChild(node *Node, offset uint32) *Node {
|
||||
for !p.tip.canContain(node.Type) {
|
||||
p.finalize(p.tip)
|
||||
}
|
||||
p.tip.AppendChild(node)
|
||||
p.tip = node
|
||||
return node
|
||||
}
|
||||
|
||||
func (p *Markdown) closeUnmatchedBlocks() {
|
||||
if !p.allClosed {
|
||||
for p.oldTip != p.lastMatchedContainer {
|
||||
parent := p.oldTip.Parent
|
||||
p.finalize(p.oldTip)
|
||||
p.oldTip = parent
|
||||
}
|
||||
p.allClosed = true
|
||||
}
|
||||
}
|
||||
|
||||
//
|
||||
|
|
@ -271,14 +266,80 @@ type Reference struct {
|
|||
// See the documentation in Options for more details on use-case.
|
||||
type ReferenceOverrideFunc func(reference string) (ref *Reference, overridden bool)
|
||||
|
||||
// Options represents configurable overrides and callbacks (in addition to the
|
||||
// extension flag set) for configuring a Markdown parse.
|
||||
type Options struct {
|
||||
// Extensions is a flag set of bit-wise ORed extension bits. See the
|
||||
// EXTENSION_* flags defined in this package.
|
||||
Extensions int
|
||||
// New constructs a Markdown processor. You can use the same With* functions as
|
||||
// for Run() to customize parser's behavior and the renderer.
|
||||
func New(opts ...Option) *Markdown {
|
||||
var p Markdown
|
||||
for _, opt := range opts {
|
||||
opt(&p)
|
||||
}
|
||||
p.refs = make(map[string]*reference)
|
||||
p.maxNesting = 16
|
||||
p.insideLink = false
|
||||
docNode := NewNode(Document)
|
||||
p.doc = docNode
|
||||
p.tip = docNode
|
||||
p.oldTip = docNode
|
||||
p.lastMatchedContainer = docNode
|
||||
p.allClosed = true
|
||||
// register inline parsers
|
||||
p.inlineCallback[' '] = maybeLineBreak
|
||||
p.inlineCallback['*'] = emphasis
|
||||
p.inlineCallback['_'] = emphasis
|
||||
if p.extensions&Strikethrough != 0 {
|
||||
p.inlineCallback['~'] = emphasis
|
||||
}
|
||||
p.inlineCallback['`'] = codeSpan
|
||||
p.inlineCallback['\n'] = lineBreak
|
||||
p.inlineCallback['['] = link
|
||||
p.inlineCallback['<'] = leftAngle
|
||||
p.inlineCallback['\\'] = escape
|
||||
p.inlineCallback['&'] = entity
|
||||
p.inlineCallback['!'] = maybeImage
|
||||
p.inlineCallback['^'] = maybeInlineFootnote
|
||||
if p.extensions&Autolink != 0 {
|
||||
p.inlineCallback['h'] = maybeAutoLink
|
||||
p.inlineCallback['m'] = maybeAutoLink
|
||||
p.inlineCallback['f'] = maybeAutoLink
|
||||
p.inlineCallback['H'] = maybeAutoLink
|
||||
p.inlineCallback['M'] = maybeAutoLink
|
||||
p.inlineCallback['F'] = maybeAutoLink
|
||||
}
|
||||
if p.extensions&Footnotes != 0 {
|
||||
p.notes = make([]*reference, 0)
|
||||
}
|
||||
return &p
|
||||
}
|
||||
|
||||
// ReferenceOverride is an optional function callback that is called every
|
||||
// Option customizes the Markdown processor's default behavior.
|
||||
type Option func(*Markdown)
|
||||
|
||||
// WithRenderer allows you to override the default renderer.
|
||||
func WithRenderer(r Renderer) Option {
|
||||
return func(p *Markdown) {
|
||||
p.renderer = r
|
||||
}
|
||||
}
|
||||
|
||||
// WithExtensions allows you to pick some of the many extensions provided by
|
||||
// Blackfriday. You can bitwise OR them.
|
||||
func WithExtensions(e Extensions) Option {
|
||||
return func(p *Markdown) {
|
||||
p.extensions = e
|
||||
}
|
||||
}
|
||||
|
||||
// WithNoExtensions turns off all extensions and custom behavior.
|
||||
func WithNoExtensions() Option {
|
||||
return func(p *Markdown) {
|
||||
p.extensions = NoExtensions
|
||||
p.renderer = NewHTMLRenderer(HTMLRendererParameters{
|
||||
Flags: HTMLFlagsNone,
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
// WithRefOverride sets an optional function callback that is called every
|
||||
// time a reference is resolved.
|
||||
//
|
||||
// In Markdown, the link reference syntax can be made to resolve a link to
|
||||
|
|
@ -292,199 +353,108 @@ type Options struct {
|
|||
// function first, before consulting the defined refids at the bottom. If
|
||||
// the override function indicates an override did not occur, the refids at
|
||||
// the bottom will be used to fill in the link details.
|
||||
ReferenceOverride ReferenceOverrideFunc
|
||||
func WithRefOverride(o ReferenceOverrideFunc) Option {
|
||||
return func(p *Markdown) {
|
||||
p.referenceOverride = o
|
||||
}
|
||||
}
|
||||
|
||||
// MarkdownBasic is a convenience function for simple rendering.
|
||||
// It processes markdown input with no extensions enabled.
|
||||
func MarkdownBasic(input []byte) []byte {
|
||||
// set up the HTML renderer
|
||||
htmlFlags := HTML_USE_XHTML
|
||||
renderer := HtmlRenderer(htmlFlags, "", "")
|
||||
|
||||
// set up the parser
|
||||
return MarkdownOptions(input, renderer, Options{Extensions: 0})
|
||||
}
|
||||
|
||||
// Call Markdown with most useful extensions enabled
|
||||
// MarkdownCommon is a convenience function for simple rendering.
|
||||
// It processes markdown input with common extensions enabled, including:
|
||||
// Run is the main entry point to Blackfriday. It parses and renders a
|
||||
// block of markdown-encoded text.
|
||||
//
|
||||
// * Smartypants processing with smart fractions and LaTeX dashes
|
||||
// The simplest invocation of Run takes one argument, input:
|
||||
// output := Run(input)
|
||||
// This will parse the input with CommonExtensions enabled and render it with
|
||||
// the default HTMLRenderer (with CommonHTMLFlags).
|
||||
//
|
||||
// * Intra-word emphasis suppression
|
||||
// Variadic arguments opts can customize the default behavior. Since Markdown
|
||||
// type does not contain exported fields, you can not use it directly. Instead,
|
||||
// use the With* functions. For example, this will call the most basic
|
||||
// functionality, with no extensions:
|
||||
// output := Run(input, WithNoExtensions())
|
||||
//
|
||||
// * Tables
|
||||
//
|
||||
// * Fenced code blocks
|
||||
//
|
||||
// * Autolinking
|
||||
//
|
||||
// * Strikethrough support
|
||||
//
|
||||
// * Strict header parsing
|
||||
//
|
||||
// * Custom Header IDs
|
||||
func MarkdownCommon(input []byte) []byte {
|
||||
// set up the HTML renderer
|
||||
renderer := HtmlRenderer(commonHtmlFlags, "", "")
|
||||
return MarkdownOptions(input, renderer, Options{
|
||||
Extensions: commonExtensions})
|
||||
}
|
||||
|
||||
// Markdown is the main rendering function.
|
||||
// It parses and renders a block of markdown-encoded text.
|
||||
// The supplied Renderer is used to format the output, and extensions dictates
|
||||
// which non-standard extensions are enabled.
|
||||
//
|
||||
// To use the supplied Html or LaTeX renderers, see HtmlRenderer and
|
||||
// LatexRenderer, respectively.
|
||||
func Markdown(input []byte, renderer Renderer, extensions int) []byte {
|
||||
return MarkdownOptions(input, renderer, Options{
|
||||
Extensions: extensions})
|
||||
}
|
||||
|
||||
// MarkdownOptions is just like Markdown but takes additional options through
|
||||
// the Options struct.
|
||||
func MarkdownOptions(input []byte, renderer Renderer, opts Options) []byte {
|
||||
// no point in parsing if we can't render
|
||||
if renderer == nil {
|
||||
return nil
|
||||
}
|
||||
|
||||
extensions := opts.Extensions
|
||||
|
||||
// fill in the render structure
|
||||
p := new(parser)
|
||||
p.r = renderer
|
||||
p.flags = extensions
|
||||
p.refOverride = opts.ReferenceOverride
|
||||
p.refs = make(map[string]*reference)
|
||||
p.maxNesting = 16
|
||||
p.insideLink = false
|
||||
|
||||
// register inline parsers
|
||||
p.inlineCallback['*'] = emphasis
|
||||
p.inlineCallback['_'] = emphasis
|
||||
if extensions&EXTENSION_STRIKETHROUGH != 0 {
|
||||
p.inlineCallback['~'] = emphasis
|
||||
}
|
||||
p.inlineCallback['`'] = codeSpan
|
||||
p.inlineCallback['\n'] = lineBreak
|
||||
p.inlineCallback['['] = link
|
||||
p.inlineCallback['<'] = leftAngle
|
||||
p.inlineCallback['\\'] = escape
|
||||
p.inlineCallback['&'] = entity
|
||||
|
||||
if extensions&EXTENSION_AUTOLINK != 0 {
|
||||
p.inlineCallback[':'] = autoLink
|
||||
}
|
||||
|
||||
if extensions&EXTENSION_FOOTNOTES != 0 {
|
||||
p.notes = make([]*reference, 0)
|
||||
p.notesRecord = make(map[string]struct{})
|
||||
}
|
||||
|
||||
first := firstPass(p, input)
|
||||
second := secondPass(p, first)
|
||||
return second
|
||||
}
|
||||
|
||||
// first pass:
|
||||
// - normalize newlines
|
||||
// - extract references (outside of fenced code blocks)
|
||||
// - expand tabs (outside of fenced code blocks)
|
||||
// - copy everything else
|
||||
func firstPass(p *parser, input []byte) []byte {
|
||||
var out bytes.Buffer
|
||||
tabSize := TAB_SIZE_DEFAULT
|
||||
if p.flags&EXTENSION_TAB_SIZE_EIGHT != 0 {
|
||||
tabSize = TAB_SIZE_EIGHT
|
||||
}
|
||||
beg := 0
|
||||
lastFencedCodeBlockEnd := 0
|
||||
for beg < len(input) {
|
||||
// Find end of this line, then process the line.
|
||||
end := beg
|
||||
for end < len(input) && input[end] != '\n' && input[end] != '\r' {
|
||||
end++
|
||||
}
|
||||
|
||||
if p.flags&EXTENSION_FENCED_CODE != 0 {
|
||||
// track fenced code block boundaries to suppress tab expansion
|
||||
// and reference extraction inside them:
|
||||
if beg >= lastFencedCodeBlockEnd {
|
||||
if i := p.fencedCodeBlock(&out, input[beg:], false); i > 0 {
|
||||
lastFencedCodeBlockEnd = beg + i
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// add the line body if present
|
||||
if end > beg {
|
||||
if end < lastFencedCodeBlockEnd { // Do not expand tabs while inside fenced code blocks.
|
||||
out.Write(input[beg:end])
|
||||
} else if refEnd := isReference(p, input[beg:], tabSize); refEnd > 0 {
|
||||
beg += refEnd
|
||||
continue
|
||||
} else {
|
||||
expandTabs(&out, input[beg:end], tabSize)
|
||||
}
|
||||
}
|
||||
|
||||
if end < len(input) && input[end] == '\r' {
|
||||
end++
|
||||
}
|
||||
if end < len(input) && input[end] == '\n' {
|
||||
end++
|
||||
}
|
||||
out.WriteByte('\n')
|
||||
|
||||
beg = end
|
||||
}
|
||||
|
||||
// empty input?
|
||||
if out.Len() == 0 {
|
||||
out.WriteByte('\n')
|
||||
}
|
||||
|
||||
return out.Bytes()
|
||||
}
|
||||
|
||||
// second pass: actual rendering
|
||||
func secondPass(p *parser, input []byte) []byte {
|
||||
var output bytes.Buffer
|
||||
|
||||
p.r.DocumentHeader(&output)
|
||||
p.block(&output, input)
|
||||
|
||||
if p.flags&EXTENSION_FOOTNOTES != 0 && len(p.notes) > 0 {
|
||||
p.r.Footnotes(&output, func() bool {
|
||||
flags := LIST_ITEM_BEGINNING_OF_LIST
|
||||
for i := 0; i < len(p.notes); i += 1 {
|
||||
ref := p.notes[i]
|
||||
var buf bytes.Buffer
|
||||
if ref.hasBlock {
|
||||
flags |= LIST_ITEM_CONTAINS_BLOCK
|
||||
p.block(&buf, ref.title)
|
||||
} else {
|
||||
p.inline(&buf, ref.title)
|
||||
}
|
||||
p.r.FootnoteItem(&output, ref.link, buf.Bytes(), flags)
|
||||
flags &^= LIST_ITEM_BEGINNING_OF_LIST | LIST_ITEM_CONTAINS_BLOCK
|
||||
}
|
||||
|
||||
return true
|
||||
// You can use any number of With* arguments, even contradicting ones. They
|
||||
// will be applied in order of appearance and the latter will override the
|
||||
// former:
|
||||
// output := Run(input, WithNoExtensions(), WithExtensions(exts),
|
||||
// WithRenderer(yourRenderer))
|
||||
func Run(input []byte, opts ...Option) []byte {
|
||||
r := NewHTMLRenderer(HTMLRendererParameters{
|
||||
Flags: CommonHTMLFlags,
|
||||
})
|
||||
optList := []Option{WithRenderer(r), WithExtensions(CommonExtensions)}
|
||||
optList = append(optList, opts...)
|
||||
parser := New(optList...)
|
||||
ast := parser.Parse(input)
|
||||
var buf bytes.Buffer
|
||||
parser.renderer.RenderHeader(&buf, ast)
|
||||
ast.Walk(func(node *Node, entering bool) WalkStatus {
|
||||
return parser.renderer.RenderNode(&buf, node, entering)
|
||||
})
|
||||
parser.renderer.RenderFooter(&buf, ast)
|
||||
return buf.Bytes()
|
||||
}
|
||||
|
||||
p.r.DocumentFooter(&output)
|
||||
|
||||
if p.nesting != 0 {
|
||||
panic("Nesting level did not end at zero")
|
||||
// Parse is an entry point to the parsing part of Blackfriday. It takes an
|
||||
// input markdown document and produces a syntax tree for its contents. This
|
||||
// tree can then be rendered with a default or custom renderer, or
|
||||
// analyzed/transformed by the caller to whatever non-standard needs they have.
|
||||
// The return value is the root node of the syntax tree.
|
||||
func (p *Markdown) Parse(input []byte) *Node {
|
||||
p.block(input)
|
||||
// Walk the tree and finish up some of unfinished blocks
|
||||
for p.tip != nil {
|
||||
p.finalize(p.tip)
|
||||
}
|
||||
// Walk the tree again and process inline markdown in each block
|
||||
p.doc.Walk(func(node *Node, entering bool) WalkStatus {
|
||||
if node.Type == Paragraph || node.Type == Heading || node.Type == TableCell {
|
||||
p.inline(node, node.content)
|
||||
node.content = nil
|
||||
}
|
||||
return GoToNext
|
||||
})
|
||||
p.parseRefsToAST()
|
||||
return p.doc
|
||||
}
|
||||
|
||||
return output.Bytes()
|
||||
func (p *Markdown) parseRefsToAST() {
|
||||
if p.extensions&Footnotes == 0 || len(p.notes) == 0 {
|
||||
return
|
||||
}
|
||||
p.tip = p.doc
|
||||
block := p.addBlock(List, nil)
|
||||
block.IsFootnotesList = true
|
||||
block.ListFlags = ListTypeOrdered
|
||||
flags := ListItemBeginningOfList
|
||||
// Note: this loop is intentionally explicit, not range-form. This is
|
||||
// because the body of the loop will append nested footnotes to p.notes and
|
||||
// we need to process those late additions. Range form would only walk over
|
||||
// the fixed initial set.
|
||||
for i := 0; i < len(p.notes); i++ {
|
||||
ref := p.notes[i]
|
||||
p.addExistingChild(ref.footnote, 0)
|
||||
block := ref.footnote
|
||||
block.ListFlags = flags | ListTypeOrdered
|
||||
block.RefLink = ref.link
|
||||
if ref.hasBlock {
|
||||
flags |= ListItemContainsBlock
|
||||
p.block(ref.title)
|
||||
} else {
|
||||
p.inline(block, ref.title)
|
||||
}
|
||||
flags &^= ListItemBeginningOfList | ListItemContainsBlock
|
||||
}
|
||||
above := block.Parent
|
||||
finalizeList(block)
|
||||
p.tip = above
|
||||
block.Walk(func(node *Node, entering bool) WalkStatus {
|
||||
if node.Type == Paragraph || node.Type == Heading {
|
||||
p.inline(node, node.content)
|
||||
node.content = nil
|
||||
}
|
||||
return GoToNext
|
||||
})
|
||||
}
|
||||
|
||||
//
|
||||
|
|
@ -516,18 +486,56 @@ func secondPass(p *parser, input []byte) []byte {
|
|||
//
|
||||
// are not yet supported.
|
||||
|
||||
// References are parsed and stored in this struct.
|
||||
// reference holds all information necessary for a reference-style links or
|
||||
// footnotes.
|
||||
//
|
||||
// Consider this markdown with reference-style links:
|
||||
//
|
||||
// [link][ref]
|
||||
//
|
||||
// [ref]: /url/ "tooltip title"
|
||||
//
|
||||
// It will be ultimately converted to this HTML:
|
||||
//
|
||||
// <p><a href=\"/url/\" title=\"title\">link</a></p>
|
||||
//
|
||||
// And a reference structure will be populated as follows:
|
||||
//
|
||||
// p.refs["ref"] = &reference{
|
||||
// link: "/url/",
|
||||
// title: "tooltip title",
|
||||
// }
|
||||
//
|
||||
// Alternatively, reference can contain information about a footnote. Consider
|
||||
// this markdown:
|
||||
//
|
||||
// Text needing a footnote.[^a]
|
||||
//
|
||||
// [^a]: This is the note
|
||||
//
|
||||
// A reference structure will be populated as follows:
|
||||
//
|
||||
// p.refs["a"] = &reference{
|
||||
// link: "a",
|
||||
// title: "This is the note",
|
||||
// noteID: <some positive int>,
|
||||
// }
|
||||
//
|
||||
// TODO: As you can see, it begs for splitting into two dedicated structures
|
||||
// for refs and for footnotes.
|
||||
type reference struct {
|
||||
link []byte
|
||||
title []byte
|
||||
noteId int // 0 if not a footnote ref
|
||||
noteID int // 0 if not a footnote ref
|
||||
hasBlock bool
|
||||
text []byte
|
||||
footnote *Node // a link to the Item node within a list of footnotes
|
||||
|
||||
text []byte // only gets populated by refOverride feature with Reference.Text
|
||||
}
|
||||
|
||||
func (r *reference) String() string {
|
||||
return fmt.Sprintf("{link: %q, title: %q, text: %q, noteId: %d, hasBlock: %v}",
|
||||
r.link, r.title, r.text, r.noteId, r.hasBlock)
|
||||
return fmt.Sprintf("{link: %q, title: %q, text: %q, noteID: %d, hasBlock: %v}",
|
||||
r.link, r.title, r.text, r.noteID, r.hasBlock)
|
||||
}
|
||||
|
||||
// Check whether or not data starts with a reference link.
|
||||
|
|
@ -535,7 +543,7 @@ func (r *reference) String() string {
|
|||
// (in the render struct).
|
||||
// Returns the number of bytes to skip to move past it,
|
||||
// or zero if the first line is not a reference.
|
||||
func isReference(p *parser, data []byte, tabSize int) int {
|
||||
func isReference(p *Markdown, data []byte, tabSize int) int {
|
||||
// up to 3 optional leading spaces
|
||||
if len(data) < 4 {
|
||||
return 0
|
||||
|
|
@ -545,18 +553,18 @@ func isReference(p *parser, data []byte, tabSize int) int {
|
|||
i++
|
||||
}
|
||||
|
||||
noteId := 0
|
||||
noteID := 0
|
||||
|
||||
// id part: anything but a newline between brackets
|
||||
if data[i] != '[' {
|
||||
return 0
|
||||
}
|
||||
i++
|
||||
if p.flags&EXTENSION_FOOTNOTES != 0 {
|
||||
if p.extensions&Footnotes != 0 {
|
||||
if i < len(data) && data[i] == '^' {
|
||||
// we can set it to anything here because the proper noteIds will
|
||||
// be assigned later during the second pass. It just has to be != 0
|
||||
noteId = 1
|
||||
noteID = 1
|
||||
i++
|
||||
}
|
||||
}
|
||||
|
|
@ -568,7 +576,11 @@ func isReference(p *parser, data []byte, tabSize int) int {
|
|||
return 0
|
||||
}
|
||||
idEnd := i
|
||||
|
||||
// footnotes can have empty ID, like this: [^], but a reference can not be
|
||||
// empty like this: []. Break early if it's not a footnote and there's no ID
|
||||
if noteID == 0 && idOffset == idEnd {
|
||||
return 0
|
||||
}
|
||||
// spacer: colon (space | tab)* newline? (space | tab)*
|
||||
i++
|
||||
if i >= len(data) || data[i] != ':' {
|
||||
|
|
@ -599,7 +611,7 @@ func isReference(p *parser, data []byte, tabSize int) int {
|
|||
hasBlock bool
|
||||
)
|
||||
|
||||
if p.flags&EXTENSION_FOOTNOTES != 0 && noteId != 0 {
|
||||
if p.extensions&Footnotes != 0 && noteID != 0 {
|
||||
linkOffset, linkEnd, raw, hasBlock = scanFootnote(p, data, i, tabSize)
|
||||
lineEnd = linkEnd
|
||||
} else {
|
||||
|
|
@ -612,11 +624,11 @@ func isReference(p *parser, data []byte, tabSize int) int {
|
|||
// a valid ref has been found
|
||||
|
||||
ref := &reference{
|
||||
noteId: noteId,
|
||||
noteID: noteID,
|
||||
hasBlock: hasBlock,
|
||||
}
|
||||
|
||||
if noteId > 0 {
|
||||
if noteID > 0 {
|
||||
// reusing the link field for the id since footnotes don't have links
|
||||
ref.link = data[idOffset:idEnd]
|
||||
// if footnote, it's not really a title, it's the contained text
|
||||
|
|
@ -634,15 +646,12 @@ func isReference(p *parser, data []byte, tabSize int) int {
|
|||
return lineEnd
|
||||
}
|
||||
|
||||
func scanLinkRef(p *parser, data []byte, i int) (linkOffset, linkEnd, titleOffset, titleEnd, lineEnd int) {
|
||||
func scanLinkRef(p *Markdown, data []byte, i int) (linkOffset, linkEnd, titleOffset, titleEnd, lineEnd int) {
|
||||
// link: whitespace-free sequence, optionally between angle brackets
|
||||
if data[i] == '<' {
|
||||
i++
|
||||
}
|
||||
linkOffset = i
|
||||
if i == len(data) {
|
||||
return
|
||||
}
|
||||
for i < len(data) && data[i] != ' ' && data[i] != '\t' && data[i] != '\n' && data[i] != '\r' {
|
||||
i++
|
||||
}
|
||||
|
|
@ -705,13 +714,13 @@ func scanLinkRef(p *parser, data []byte, i int) (linkOffset, linkEnd, titleOffse
|
|||
return
|
||||
}
|
||||
|
||||
// The first bit of this logic is the same as (*parser).listItem, but the rest
|
||||
// The first bit of this logic is the same as Parser.listItem, but the rest
|
||||
// is much simpler. This function simply finds the entire block and shifts it
|
||||
// over by one tab if it is indeed a block (just returns the line if it's not).
|
||||
// blockEnd is the end of the section in the input buffer, and contents is the
|
||||
// extracted text that was shifted over one tab. It will need to be rendered at
|
||||
// the end of the document.
|
||||
func scanFootnote(p *parser, data []byte, i, indentSize int) (blockStart, blockEnd int, contents []byte, hasBlock bool) {
|
||||
func scanFootnote(p *Markdown, data []byte, i, indentSize int) (blockStart, blockEnd int, contents []byte, hasBlock bool) {
|
||||
if i == 0 || len(data) == 0 {
|
||||
return
|
||||
}
|
||||
|
|
|
|||
|
|
@ -0,0 +1,354 @@
|
|||
package blackfriday
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"fmt"
|
||||
)
|
||||
|
||||
// NodeType specifies a type of a single node of a syntax tree. Usually one
|
||||
// node (and its type) corresponds to a single markdown feature, e.g. emphasis
|
||||
// or code block.
|
||||
type NodeType int
|
||||
|
||||
// Constants for identifying different types of nodes. See NodeType.
|
||||
const (
|
||||
Document NodeType = iota
|
||||
BlockQuote
|
||||
List
|
||||
Item
|
||||
Paragraph
|
||||
Heading
|
||||
HorizontalRule
|
||||
Emph
|
||||
Strong
|
||||
Del
|
||||
Link
|
||||
Image
|
||||
Text
|
||||
HTMLBlock
|
||||
CodeBlock
|
||||
Softbreak
|
||||
Hardbreak
|
||||
Code
|
||||
HTMLSpan
|
||||
Table
|
||||
TableCell
|
||||
TableHead
|
||||
TableBody
|
||||
TableRow
|
||||
)
|
||||
|
||||
var nodeTypeNames = []string{
|
||||
Document: "Document",
|
||||
BlockQuote: "BlockQuote",
|
||||
List: "List",
|
||||
Item: "Item",
|
||||
Paragraph: "Paragraph",
|
||||
Heading: "Heading",
|
||||
HorizontalRule: "HorizontalRule",
|
||||
Emph: "Emph",
|
||||
Strong: "Strong",
|
||||
Del: "Del",
|
||||
Link: "Link",
|
||||
Image: "Image",
|
||||
Text: "Text",
|
||||
HTMLBlock: "HTMLBlock",
|
||||
CodeBlock: "CodeBlock",
|
||||
Softbreak: "Softbreak",
|
||||
Hardbreak: "Hardbreak",
|
||||
Code: "Code",
|
||||
HTMLSpan: "HTMLSpan",
|
||||
Table: "Table",
|
||||
TableCell: "TableCell",
|
||||
TableHead: "TableHead",
|
||||
TableBody: "TableBody",
|
||||
TableRow: "TableRow",
|
||||
}
|
||||
|
||||
func (t NodeType) String() string {
|
||||
return nodeTypeNames[t]
|
||||
}
|
||||
|
||||
// ListData contains fields relevant to a List and Item node type.
|
||||
type ListData struct {
|
||||
ListFlags ListType
|
||||
Tight bool // Skip <p>s around list item data if true
|
||||
BulletChar byte // '*', '+' or '-' in bullet lists
|
||||
Delimiter byte // '.' or ')' after the number in ordered lists
|
||||
RefLink []byte // If not nil, turns this list item into a footnote item and triggers different rendering
|
||||
IsFootnotesList bool // This is a list of footnotes
|
||||
}
|
||||
|
||||
// LinkData contains fields relevant to a Link node type.
|
||||
type LinkData struct {
|
||||
Destination []byte // Destination is what goes into a href
|
||||
Title []byte // Title is the tooltip thing that goes in a title attribute
|
||||
NoteID int // NoteID contains a serial number of a footnote, zero if it's not a footnote
|
||||
Footnote *Node // If it's a footnote, this is a direct link to the footnote Node. Otherwise nil.
|
||||
}
|
||||
|
||||
// CodeBlockData contains fields relevant to a CodeBlock node type.
|
||||
type CodeBlockData struct {
|
||||
IsFenced bool // Specifies whether it's a fenced code block or an indented one
|
||||
Info []byte // This holds the info string
|
||||
FenceChar byte
|
||||
FenceLength int
|
||||
FenceOffset int
|
||||
}
|
||||
|
||||
// TableCellData contains fields relevant to a TableCell node type.
|
||||
type TableCellData struct {
|
||||
IsHeader bool // This tells if it's under the header row
|
||||
Align CellAlignFlags // This holds the value for align attribute
|
||||
}
|
||||
|
||||
// HeadingData contains fields relevant to a Heading node type.
|
||||
type HeadingData struct {
|
||||
Level int // This holds the heading level number
|
||||
HeadingID string // This might hold heading ID, if present
|
||||
IsTitleblock bool // Specifies whether it's a title block
|
||||
}
|
||||
|
||||
// Node is a single element in the abstract syntax tree of the parsed document.
|
||||
// It holds connections to the structurally neighboring nodes and, for certain
|
||||
// types of nodes, additional information that might be needed when rendering.
|
||||
type Node struct {
|
||||
Type NodeType // Determines the type of the node
|
||||
Parent *Node // Points to the parent
|
||||
FirstChild *Node // Points to the first child, if any
|
||||
LastChild *Node // Points to the last child, if any
|
||||
Prev *Node // Previous sibling; nil if it's the first child
|
||||
Next *Node // Next sibling; nil if it's the last child
|
||||
|
||||
Literal []byte // Text contents of the leaf nodes
|
||||
|
||||
HeadingData // Populated if Type is Heading
|
||||
ListData // Populated if Type is List
|
||||
CodeBlockData // Populated if Type is CodeBlock
|
||||
LinkData // Populated if Type is Link
|
||||
TableCellData // Populated if Type is TableCell
|
||||
|
||||
content []byte // Markdown content of the block nodes
|
||||
open bool // Specifies an open block node that has not been finished to process yet
|
||||
}
|
||||
|
||||
// NewNode allocates a node of a specified type.
|
||||
func NewNode(typ NodeType) *Node {
|
||||
return &Node{
|
||||
Type: typ,
|
||||
open: true,
|
||||
}
|
||||
}
|
||||
|
||||
func (n *Node) String() string {
|
||||
ellipsis := ""
|
||||
snippet := n.Literal
|
||||
if len(snippet) > 16 {
|
||||
snippet = snippet[:16]
|
||||
ellipsis = "..."
|
||||
}
|
||||
return fmt.Sprintf("%s: '%s%s'", n.Type, snippet, ellipsis)
|
||||
}
|
||||
|
||||
// Unlink removes node 'n' from the tree.
|
||||
// It panics if the node is nil.
|
||||
func (n *Node) Unlink() {
|
||||
if n.Prev != nil {
|
||||
n.Prev.Next = n.Next
|
||||
} else if n.Parent != nil {
|
||||
n.Parent.FirstChild = n.Next
|
||||
}
|
||||
if n.Next != nil {
|
||||
n.Next.Prev = n.Prev
|
||||
} else if n.Parent != nil {
|
||||
n.Parent.LastChild = n.Prev
|
||||
}
|
||||
n.Parent = nil
|
||||
n.Next = nil
|
||||
n.Prev = nil
|
||||
}
|
||||
|
||||
// AppendChild adds a node 'child' as a child of 'n'.
|
||||
// It panics if either node is nil.
|
||||
func (n *Node) AppendChild(child *Node) {
|
||||
child.Unlink()
|
||||
child.Parent = n
|
||||
if n.LastChild != nil {
|
||||
n.LastChild.Next = child
|
||||
child.Prev = n.LastChild
|
||||
n.LastChild = child
|
||||
} else {
|
||||
n.FirstChild = child
|
||||
n.LastChild = child
|
||||
}
|
||||
}
|
||||
|
||||
// InsertBefore inserts 'sibling' immediately before 'n'.
|
||||
// It panics if either node is nil.
|
||||
func (n *Node) InsertBefore(sibling *Node) {
|
||||
sibling.Unlink()
|
||||
sibling.Prev = n.Prev
|
||||
if sibling.Prev != nil {
|
||||
sibling.Prev.Next = sibling
|
||||
}
|
||||
sibling.Next = n
|
||||
n.Prev = sibling
|
||||
sibling.Parent = n.Parent
|
||||
if sibling.Prev == nil {
|
||||
sibling.Parent.FirstChild = sibling
|
||||
}
|
||||
}
|
||||
|
||||
func (n *Node) isContainer() bool {
|
||||
switch n.Type {
|
||||
case Document:
|
||||
fallthrough
|
||||
case BlockQuote:
|
||||
fallthrough
|
||||
case List:
|
||||
fallthrough
|
||||
case Item:
|
||||
fallthrough
|
||||
case Paragraph:
|
||||
fallthrough
|
||||
case Heading:
|
||||
fallthrough
|
||||
case Emph:
|
||||
fallthrough
|
||||
case Strong:
|
||||
fallthrough
|
||||
case Del:
|
||||
fallthrough
|
||||
case Link:
|
||||
fallthrough
|
||||
case Image:
|
||||
fallthrough
|
||||
case Table:
|
||||
fallthrough
|
||||
case TableHead:
|
||||
fallthrough
|
||||
case TableBody:
|
||||
fallthrough
|
||||
case TableRow:
|
||||
fallthrough
|
||||
case TableCell:
|
||||
return true
|
||||
default:
|
||||
return false
|
||||
}
|
||||
}
|
||||
|
||||
func (n *Node) canContain(t NodeType) bool {
|
||||
if n.Type == List {
|
||||
return t == Item
|
||||
}
|
||||
if n.Type == Document || n.Type == BlockQuote || n.Type == Item {
|
||||
return t != Item
|
||||
}
|
||||
if n.Type == Table {
|
||||
return t == TableHead || t == TableBody
|
||||
}
|
||||
if n.Type == TableHead || n.Type == TableBody {
|
||||
return t == TableRow
|
||||
}
|
||||
if n.Type == TableRow {
|
||||
return t == TableCell
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
// WalkStatus allows NodeVisitor to have some control over the tree traversal.
|
||||
// It is returned from NodeVisitor and different values allow Node.Walk to
|
||||
// decide which node to go to next.
|
||||
type WalkStatus int
|
||||
|
||||
const (
|
||||
// GoToNext is the default traversal of every node.
|
||||
GoToNext WalkStatus = iota
|
||||
// SkipChildren tells walker to skip all children of current node.
|
||||
SkipChildren
|
||||
// Terminate tells walker to terminate the traversal.
|
||||
Terminate
|
||||
)
|
||||
|
||||
// NodeVisitor is a callback to be called when traversing the syntax tree.
|
||||
// Called twice for every node: once with entering=true when the branch is
|
||||
// first visited, then with entering=false after all the children are done.
|
||||
type NodeVisitor func(node *Node, entering bool) WalkStatus
|
||||
|
||||
// Walk is a convenience method that instantiates a walker and starts a
|
||||
// traversal of subtree rooted at n.
|
||||
func (n *Node) Walk(visitor NodeVisitor) {
|
||||
w := newNodeWalker(n)
|
||||
for w.current != nil {
|
||||
status := visitor(w.current, w.entering)
|
||||
switch status {
|
||||
case GoToNext:
|
||||
w.next()
|
||||
case SkipChildren:
|
||||
w.entering = false
|
||||
w.next()
|
||||
case Terminate:
|
||||
return
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
type nodeWalker struct {
|
||||
current *Node
|
||||
root *Node
|
||||
entering bool
|
||||
}
|
||||
|
||||
func newNodeWalker(root *Node) *nodeWalker {
|
||||
return &nodeWalker{
|
||||
current: root,
|
||||
root: root,
|
||||
entering: true,
|
||||
}
|
||||
}
|
||||
|
||||
func (nw *nodeWalker) next() {
|
||||
if (!nw.current.isContainer() || !nw.entering) && nw.current == nw.root {
|
||||
nw.current = nil
|
||||
return
|
||||
}
|
||||
if nw.entering && nw.current.isContainer() {
|
||||
if nw.current.FirstChild != nil {
|
||||
nw.current = nw.current.FirstChild
|
||||
nw.entering = true
|
||||
} else {
|
||||
nw.entering = false
|
||||
}
|
||||
} else if nw.current.Next == nil {
|
||||
nw.current = nw.current.Parent
|
||||
nw.entering = false
|
||||
} else {
|
||||
nw.current = nw.current.Next
|
||||
nw.entering = true
|
||||
}
|
||||
}
|
||||
|
||||
func dump(ast *Node) {
|
||||
fmt.Println(dumpString(ast))
|
||||
}
|
||||
|
||||
func dumpR(ast *Node, depth int) string {
|
||||
if ast == nil {
|
||||
return ""
|
||||
}
|
||||
indent := bytes.Repeat([]byte("\t"), depth)
|
||||
content := ast.Literal
|
||||
if content == nil {
|
||||
content = ast.content
|
||||
}
|
||||
result := fmt.Sprintf("%s%s(%q)\n", indent, ast.Type, content)
|
||||
for n := ast.FirstChild; n != nil; n = n.Next {
|
||||
result += dumpR(n, depth+1)
|
||||
}
|
||||
return result
|
||||
}
|
||||
|
||||
func dumpString(ast *Node) string {
|
||||
return dumpR(ast, 0)
|
||||
}
|
||||
|
|
@ -17,11 +17,14 @@ package blackfriday
|
|||
|
||||
import (
|
||||
"bytes"
|
||||
"io"
|
||||
)
|
||||
|
||||
type smartypantsData struct {
|
||||
// SPRenderer is a struct containing state of a Smartypants renderer.
|
||||
type SPRenderer struct {
|
||||
inSingleQuote bool
|
||||
inDoubleQuote bool
|
||||
callbacks [256]smartCallback
|
||||
}
|
||||
|
||||
func wordBoundary(c byte) bool {
|
||||
|
|
@ -118,7 +121,7 @@ func smartQuoteHelper(out *bytes.Buffer, previousChar byte, nextChar byte, quote
|
|||
return true
|
||||
}
|
||||
|
||||
func smartSingleQuote(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
|
||||
func (r *SPRenderer) smartSingleQuote(out *bytes.Buffer, previousChar byte, text []byte) int {
|
||||
if len(text) >= 2 {
|
||||
t1 := tolower(text[1])
|
||||
|
||||
|
|
@ -127,7 +130,7 @@ func smartSingleQuote(out *bytes.Buffer, smrt *smartypantsData, previousChar byt
|
|||
if len(text) >= 3 {
|
||||
nextChar = text[2]
|
||||
}
|
||||
if smartQuoteHelper(out, previousChar, nextChar, 'd', &smrt.inDoubleQuote, false) {
|
||||
if smartQuoteHelper(out, previousChar, nextChar, 'd', &r.inDoubleQuote, false) {
|
||||
return 1
|
||||
}
|
||||
}
|
||||
|
|
@ -152,7 +155,7 @@ func smartSingleQuote(out *bytes.Buffer, smrt *smartypantsData, previousChar byt
|
|||
if len(text) > 1 {
|
||||
nextChar = text[1]
|
||||
}
|
||||
if smartQuoteHelper(out, previousChar, nextChar, 's', &smrt.inSingleQuote, false) {
|
||||
if smartQuoteHelper(out, previousChar, nextChar, 's', &r.inSingleQuote, false) {
|
||||
return 0
|
||||
}
|
||||
|
||||
|
|
@ -160,7 +163,7 @@ func smartSingleQuote(out *bytes.Buffer, smrt *smartypantsData, previousChar byt
|
|||
return 0
|
||||
}
|
||||
|
||||
func smartParens(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
|
||||
func (r *SPRenderer) smartParens(out *bytes.Buffer, previousChar byte, text []byte) int {
|
||||
if len(text) >= 3 {
|
||||
t1 := tolower(text[1])
|
||||
t2 := tolower(text[2])
|
||||
|
|
@ -185,7 +188,7 @@ func smartParens(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, te
|
|||
return 0
|
||||
}
|
||||
|
||||
func smartDash(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
|
||||
func (r *SPRenderer) smartDash(out *bytes.Buffer, previousChar byte, text []byte) int {
|
||||
if len(text) >= 2 {
|
||||
if text[1] == '-' {
|
||||
out.WriteString("—")
|
||||
|
|
@ -202,7 +205,7 @@ func smartDash(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text
|
|||
return 0
|
||||
}
|
||||
|
||||
func smartDashLatex(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
|
||||
func (r *SPRenderer) smartDashLatex(out *bytes.Buffer, previousChar byte, text []byte) int {
|
||||
if len(text) >= 3 && text[1] == '-' && text[2] == '-' {
|
||||
out.WriteString("—")
|
||||
return 2
|
||||
|
|
@ -216,13 +219,13 @@ func smartDashLatex(out *bytes.Buffer, smrt *smartypantsData, previousChar byte,
|
|||
return 0
|
||||
}
|
||||
|
||||
func smartAmpVariant(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte, quote byte, addNBSP bool) int {
|
||||
func (r *SPRenderer) smartAmpVariant(out *bytes.Buffer, previousChar byte, text []byte, quote byte, addNBSP bool) int {
|
||||
if bytes.HasPrefix(text, []byte(""")) {
|
||||
nextChar := byte(0)
|
||||
if len(text) >= 7 {
|
||||
nextChar = text[6]
|
||||
}
|
||||
if smartQuoteHelper(out, previousChar, nextChar, quote, &smrt.inDoubleQuote, addNBSP) {
|
||||
if smartQuoteHelper(out, previousChar, nextChar, quote, &r.inDoubleQuote, addNBSP) {
|
||||
return 5
|
||||
}
|
||||
}
|
||||
|
|
@ -235,18 +238,18 @@ func smartAmpVariant(out *bytes.Buffer, smrt *smartypantsData, previousChar byte
|
|||
return 0
|
||||
}
|
||||
|
||||
func smartAmp(angledQuotes, addNBSP bool) func(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
|
||||
func (r *SPRenderer) smartAmp(angledQuotes, addNBSP bool) func(*bytes.Buffer, byte, []byte) int {
|
||||
var quote byte = 'd'
|
||||
if angledQuotes {
|
||||
quote = 'a'
|
||||
}
|
||||
|
||||
return func(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
|
||||
return smartAmpVariant(out, smrt, previousChar, text, quote, addNBSP)
|
||||
return func(out *bytes.Buffer, previousChar byte, text []byte) int {
|
||||
return r.smartAmpVariant(out, previousChar, text, quote, addNBSP)
|
||||
}
|
||||
}
|
||||
|
||||
func smartPeriod(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
|
||||
func (r *SPRenderer) smartPeriod(out *bytes.Buffer, previousChar byte, text []byte) int {
|
||||
if len(text) >= 3 && text[1] == '.' && text[2] == '.' {
|
||||
out.WriteString("…")
|
||||
return 2
|
||||
|
|
@ -261,13 +264,13 @@ func smartPeriod(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, te
|
|||
return 0
|
||||
}
|
||||
|
||||
func smartBacktick(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
|
||||
func (r *SPRenderer) smartBacktick(out *bytes.Buffer, previousChar byte, text []byte) int {
|
||||
if len(text) >= 2 && text[1] == '`' {
|
||||
nextChar := byte(0)
|
||||
if len(text) >= 3 {
|
||||
nextChar = text[2]
|
||||
}
|
||||
if smartQuoteHelper(out, previousChar, nextChar, 'd', &smrt.inDoubleQuote, false) {
|
||||
if smartQuoteHelper(out, previousChar, nextChar, 'd', &r.inDoubleQuote, false) {
|
||||
return 1
|
||||
}
|
||||
}
|
||||
|
|
@ -276,7 +279,7 @@ func smartBacktick(out *bytes.Buffer, smrt *smartypantsData, previousChar byte,
|
|||
return 0
|
||||
}
|
||||
|
||||
func smartNumberGeneric(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
|
||||
func (r *SPRenderer) smartNumberGeneric(out *bytes.Buffer, previousChar byte, text []byte) int {
|
||||
if wordBoundary(previousChar) && previousChar != '/' && len(text) >= 3 {
|
||||
// is it of the form digits/digits(word boundary)?, i.e., \d+/\d+\b
|
||||
// note: check for regular slash (/) or fraction slash (⁄, 0x2044, or 0xe2 81 84 in utf-8)
|
||||
|
|
@ -318,7 +321,7 @@ func smartNumberGeneric(out *bytes.Buffer, smrt *smartypantsData, previousChar b
|
|||
return 0
|
||||
}
|
||||
|
||||
func smartNumber(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
|
||||
func (r *SPRenderer) smartNumber(out *bytes.Buffer, previousChar byte, text []byte) int {
|
||||
if wordBoundary(previousChar) && previousChar != '/' && len(text) >= 3 {
|
||||
if text[0] == '1' && text[1] == '/' && text[2] == '2' {
|
||||
if len(text) < 4 || wordBoundary(text[3]) && text[3] != '/' {
|
||||
|
|
@ -346,27 +349,27 @@ func smartNumber(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, te
|
|||
return 0
|
||||
}
|
||||
|
||||
func smartDoubleQuoteVariant(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte, quote byte) int {
|
||||
func (r *SPRenderer) smartDoubleQuoteVariant(out *bytes.Buffer, previousChar byte, text []byte, quote byte) int {
|
||||
nextChar := byte(0)
|
||||
if len(text) > 1 {
|
||||
nextChar = text[1]
|
||||
}
|
||||
if !smartQuoteHelper(out, previousChar, nextChar, quote, &smrt.inDoubleQuote, false) {
|
||||
if !smartQuoteHelper(out, previousChar, nextChar, quote, &r.inDoubleQuote, false) {
|
||||
out.WriteString(""")
|
||||
}
|
||||
|
||||
return 0
|
||||
}
|
||||
|
||||
func smartDoubleQuote(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
|
||||
return smartDoubleQuoteVariant(out, smrt, previousChar, text, 'd')
|
||||
func (r *SPRenderer) smartDoubleQuote(out *bytes.Buffer, previousChar byte, text []byte) int {
|
||||
return r.smartDoubleQuoteVariant(out, previousChar, text, 'd')
|
||||
}
|
||||
|
||||
func smartAngledDoubleQuote(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
|
||||
return smartDoubleQuoteVariant(out, smrt, previousChar, text, 'a')
|
||||
func (r *SPRenderer) smartAngledDoubleQuote(out *bytes.Buffer, previousChar byte, text []byte) int {
|
||||
return r.smartDoubleQuoteVariant(out, previousChar, text, 'a')
|
||||
}
|
||||
|
||||
func smartLeftAngle(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int {
|
||||
func (r *SPRenderer) smartLeftAngle(out *bytes.Buffer, previousChar byte, text []byte) int {
|
||||
i := 0
|
||||
|
||||
for i < len(text) && text[i] != '>' {
|
||||
|
|
@ -377,54 +380,78 @@ func smartLeftAngle(out *bytes.Buffer, smrt *smartypantsData, previousChar byte,
|
|||
return i
|
||||
}
|
||||
|
||||
type smartCallback func(out *bytes.Buffer, smrt *smartypantsData, previousChar byte, text []byte) int
|
||||
|
||||
type smartypantsRenderer [256]smartCallback
|
||||
type smartCallback func(out *bytes.Buffer, previousChar byte, text []byte) int
|
||||
|
||||
// NewSmartypantsRenderer constructs a Smartypants renderer object.
|
||||
func NewSmartypantsRenderer(flags HTMLFlags) *SPRenderer {
|
||||
var (
|
||||
smartAmpAngled = smartAmp(true, false)
|
||||
smartAmpAngledNBSP = smartAmp(true, true)
|
||||
smartAmpRegular = smartAmp(false, false)
|
||||
smartAmpRegularNBSP = smartAmp(false, true)
|
||||
r SPRenderer
|
||||
|
||||
smartAmpAngled = r.smartAmp(true, false)
|
||||
smartAmpAngledNBSP = r.smartAmp(true, true)
|
||||
smartAmpRegular = r.smartAmp(false, false)
|
||||
smartAmpRegularNBSP = r.smartAmp(false, true)
|
||||
|
||||
addNBSP = flags&SmartypantsQuotesNBSP != 0
|
||||
)
|
||||
|
||||
func smartypants(flags int) *smartypantsRenderer {
|
||||
r := new(smartypantsRenderer)
|
||||
addNBSP := flags&HTML_SMARTYPANTS_QUOTES_NBSP != 0
|
||||
if flags&HTML_SMARTYPANTS_ANGLED_QUOTES == 0 {
|
||||
r['"'] = smartDoubleQuote
|
||||
if flags&SmartypantsAngledQuotes == 0 {
|
||||
r.callbacks['"'] = r.smartDoubleQuote
|
||||
if !addNBSP {
|
||||
r['&'] = smartAmpRegular
|
||||
r.callbacks['&'] = smartAmpRegular
|
||||
} else {
|
||||
r['&'] = smartAmpRegularNBSP
|
||||
r.callbacks['&'] = smartAmpRegularNBSP
|
||||
}
|
||||
} else {
|
||||
r['"'] = smartAngledDoubleQuote
|
||||
r.callbacks['"'] = r.smartAngledDoubleQuote
|
||||
if !addNBSP {
|
||||
r['&'] = smartAmpAngled
|
||||
r.callbacks['&'] = smartAmpAngled
|
||||
} else {
|
||||
r['&'] = smartAmpAngledNBSP
|
||||
r.callbacks['&'] = smartAmpAngledNBSP
|
||||
}
|
||||
}
|
||||
r['\''] = smartSingleQuote
|
||||
r['('] = smartParens
|
||||
if flags&HTML_SMARTYPANTS_DASHES != 0 {
|
||||
if flags&HTML_SMARTYPANTS_LATEX_DASHES == 0 {
|
||||
r['-'] = smartDash
|
||||
r.callbacks['\''] = r.smartSingleQuote
|
||||
r.callbacks['('] = r.smartParens
|
||||
if flags&SmartypantsDashes != 0 {
|
||||
if flags&SmartypantsLatexDashes == 0 {
|
||||
r.callbacks['-'] = r.smartDash
|
||||
} else {
|
||||
r['-'] = smartDashLatex
|
||||
r.callbacks['-'] = r.smartDashLatex
|
||||
}
|
||||
}
|
||||
r['.'] = smartPeriod
|
||||
if flags&HTML_SMARTYPANTS_FRACTIONS == 0 {
|
||||
r['1'] = smartNumber
|
||||
r['3'] = smartNumber
|
||||
r.callbacks['.'] = r.smartPeriod
|
||||
if flags&SmartypantsFractions == 0 {
|
||||
r.callbacks['1'] = r.smartNumber
|
||||
r.callbacks['3'] = r.smartNumber
|
||||
} else {
|
||||
for ch := '1'; ch <= '9'; ch++ {
|
||||
r[ch] = smartNumberGeneric
|
||||
r.callbacks[ch] = r.smartNumberGeneric
|
||||
}
|
||||
}
|
||||
r['<'] = smartLeftAngle
|
||||
r['`'] = smartBacktick
|
||||
return r
|
||||
r.callbacks['<'] = r.smartLeftAngle
|
||||
r.callbacks['`'] = r.smartBacktick
|
||||
return &r
|
||||
}
|
||||
|
||||
// Process is the entry point of the Smartypants renderer.
|
||||
func (r *SPRenderer) Process(w io.Writer, text []byte) {
|
||||
mark := 0
|
||||
for i := 0; i < len(text); i++ {
|
||||
if action := r.callbacks[text[i]]; action != nil {
|
||||
if i > mark {
|
||||
w.Write(text[mark:i])
|
||||
}
|
||||
previousChar := byte(0)
|
||||
if i > 0 {
|
||||
previousChar = text[i-1]
|
||||
}
|
||||
var tmp bytes.Buffer
|
||||
i += action(&tmp, previousChar, text[i:])
|
||||
w.Write(tmp.Bytes())
|
||||
mark = i + 1
|
||||
}
|
||||
}
|
||||
if mark < len(text) {
|
||||
w.Write(text[mark:])
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -0,0 +1,16 @@
|
|||
sudo: false
|
||||
language: go
|
||||
go:
|
||||
- 1.x
|
||||
- master
|
||||
matrix:
|
||||
allow_failures:
|
||||
- go: master
|
||||
fast_finish: true
|
||||
install:
|
||||
- # Do nothing. This is needed to prevent default install action "go get -t -v ./..." from happening here (we want it to happen inside script step).
|
||||
script:
|
||||
- go get -t -v ./...
|
||||
- diff -u <(echo -n) <(gofmt -d -s .)
|
||||
- go tool vet .
|
||||
- go test -v -race ./...
|
||||
|
|
@ -0,0 +1,21 @@
|
|||
MIT License
|
||||
|
||||
Copyright (c) 2015 Dmitri Shuralyov
|
||||
|
||||
Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
of this software and associated documentation files (the "Software"), to deal
|
||||
in the Software without restriction, including without limitation the rights
|
||||
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
copies of the Software, and to permit persons to whom the Software is
|
||||
furnished to do so, subject to the following conditions:
|
||||
|
||||
The above copyright notice and this permission notice shall be included in all
|
||||
copies or substantial portions of the Software.
|
||||
|
||||
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
SOFTWARE.
|
||||
|
|
@ -0,0 +1,36 @@
|
|||
sanitized_anchor_name
|
||||
=====================
|
||||
|
||||
[](https://travis-ci.org/shurcooL/sanitized_anchor_name) [](https://godoc.org/github.com/shurcooL/sanitized_anchor_name)
|
||||
|
||||
Package sanitized_anchor_name provides a func to create sanitized anchor names.
|
||||
|
||||
Its logic can be reused by multiple packages to create interoperable anchor names
|
||||
and links to those anchors.
|
||||
|
||||
At this time, it does not try to ensure that generated anchor names
|
||||
are unique, that responsibility falls on the caller.
|
||||
|
||||
Installation
|
||||
------------
|
||||
|
||||
```bash
|
||||
go get -u github.com/shurcooL/sanitized_anchor_name
|
||||
```
|
||||
|
||||
Example
|
||||
-------
|
||||
|
||||
```Go
|
||||
anchorName := sanitized_anchor_name.Create("This is a header")
|
||||
|
||||
fmt.Println(anchorName)
|
||||
|
||||
// Output:
|
||||
// this-is-a-header
|
||||
```
|
||||
|
||||
License
|
||||
-------
|
||||
|
||||
- [MIT License](LICENSE)
|
||||
|
|
@ -0,0 +1,29 @@
|
|||
// Package sanitized_anchor_name provides a func to create sanitized anchor names.
|
||||
//
|
||||
// Its logic can be reused by multiple packages to create interoperable anchor names
|
||||
// and links to those anchors.
|
||||
//
|
||||
// At this time, it does not try to ensure that generated anchor names
|
||||
// are unique, that responsibility falls on the caller.
|
||||
package sanitized_anchor_name // import "github.com/shurcooL/sanitized_anchor_name"
|
||||
|
||||
import "unicode"
|
||||
|
||||
// Create returns a sanitized anchor name for the given text.
|
||||
func Create(text string) string {
|
||||
var anchorName []rune
|
||||
var futureDash = false
|
||||
for _, r := range text {
|
||||
switch {
|
||||
case unicode.IsLetter(r) || unicode.IsNumber(r):
|
||||
if futureDash && len(anchorName) > 0 {
|
||||
anchorName = append(anchorName, '-')
|
||||
}
|
||||
futureDash = false
|
||||
anchorName = append(anchorName, unicode.ToLower(r))
|
||||
default:
|
||||
futureDash = true
|
||||
}
|
||||
}
|
||||
return string(anchorName)
|
||||
}
|
||||
|
|
@ -113,7 +113,7 @@ github.com/pkg/errors
|
|||
github.com/pmezard/go-difflib/difflib
|
||||
# github.com/rs/xid v0.0.0-20180525034800-088c5cf1423a
|
||||
github.com/rs/xid
|
||||
# github.com/russross/blackfriday v1.5.1
|
||||
# github.com/russross/blackfriday v2.0.0+incompatible
|
||||
github.com/russross/blackfriday
|
||||
# github.com/saintfish/chardet v0.0.0-20120816061221-3af4cd4741ca
|
||||
github.com/saintfish/chardet
|
||||
|
|
@ -121,6 +121,8 @@ github.com/saintfish/chardet
|
|||
github.com/shazow/rateio
|
||||
# github.com/shazow/ssh-chat v0.0.0-20171012174035-2078e1381991
|
||||
github.com/shazow/ssh-chat/sshd
|
||||
# github.com/shurcooL/sanitized_anchor_name v0.0.0-20170918181015-86672fcb3f95
|
||||
github.com/shurcooL/sanitized_anchor_name
|
||||
# github.com/sirupsen/logrus v0.0.0-20180213143110-8c0189d9f6bb
|
||||
github.com/sirupsen/logrus
|
||||
# github.com/spf13/afero v0.0.0-20180211162714-bbf41cb36dff
|
||||
|
|
|
|||
Loading…
Reference in New Issue