From 0be25e21501ccf8c0f27e2fa87aba00ad304c951 Mon Sep 17 00:00:00 2001 From: zeripath Date: Thu, 9 Apr 2020 11:54:50 +0100 Subject: [PATCH] Handle yaml frontmatter (#11016) Add goldmark-meta to render yaml frontmatter as a table Fix #5377 Signed-off-by: Andrew Thornton --- go.mod | 1 + go.sum | 3 + modules/markup/markdown/markdown.go | 2 + .../github.com/yuin/goldmark-meta/.gitignore | 13 ++ vendor/github.com/yuin/goldmark-meta/LICENSE | 21 ++ .../github.com/yuin/goldmark-meta/README.md | 147 ++++++++++++ vendor/github.com/yuin/goldmark-meta/go.mod | 8 + vendor/github.com/yuin/goldmark-meta/go.sum | 6 + vendor/github.com/yuin/goldmark-meta/meta.go | 218 ++++++++++++++++++ vendor/modules.txt | 3 + 10 files changed, 422 insertions(+) create mode 100644 vendor/github.com/yuin/goldmark-meta/.gitignore create mode 100644 vendor/github.com/yuin/goldmark-meta/LICENSE create mode 100644 vendor/github.com/yuin/goldmark-meta/README.md create mode 100644 vendor/github.com/yuin/goldmark-meta/go.mod create mode 100644 vendor/github.com/yuin/goldmark-meta/go.sum create mode 100644 vendor/github.com/yuin/goldmark-meta/meta.go diff --git a/go.mod b/go.mod index e792b187a..0930b0d16 100644 --- a/go.mod +++ b/go.mod @@ -106,6 +106,7 @@ require ( github.com/urfave/cli v1.20.0 github.com/yohcop/openid-go v0.0.0-20160914080427-2c050d2dae53 github.com/yuin/goldmark v1.1.25 + github.com/yuin/goldmark-meta v0.0.0-20191126180153-f0638e958b60 go.etcd.io/bbolt v1.3.3 // indirect golang.org/x/crypto v0.0.0-20200302210943-78000ba7a073 golang.org/x/net v0.0.0-20200324143707-d3edc9973b7e diff --git a/go.sum b/go.sum index 3cda494fd..5944cbb5e 100644 --- a/go.sum +++ b/go.sum @@ -614,8 +614,11 @@ github.com/xiang90/probing v0.0.0-20190116061207-43a291ad63a2/go.mod h1:UETIi67q github.com/xordataexchange/crypt v0.0.3-0.20170626215501-b2862e3d0a77/go.mod h1:aYKd//L2LvnjZzWKhF00oedf4jCCReLcmhLdhm1A27Q= github.com/yohcop/openid-go v0.0.0-20160914080427-2c050d2dae53 h1:HsIQ6yAjfjQ3IxPGrTusxp6Qxn92gNVq2x5CbvQvx3w= github.com/yohcop/openid-go v0.0.0-20160914080427-2c050d2dae53/go.mod h1:f6elajwZV+xceiaqgRL090YzLEDGSbqr3poGL3ZgXYo= +github.com/yuin/goldmark v1.1.7/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74= github.com/yuin/goldmark v1.1.25 h1:isv+Q6HQAmmL2Ofcmg8QauBmDPlUUnSoNhEcC940Rds= github.com/yuin/goldmark v1.1.25/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74= +github.com/yuin/goldmark-meta v0.0.0-20191126180153-f0638e958b60 h1:gZucqLjL1eDzVWrXj4uiWeMbAopJlBR2mKQAsTGdPwo= +github.com/yuin/goldmark-meta v0.0.0-20191126180153-f0638e958b60/go.mod h1:i9VhcIHN2PxXMbQrKqXNueok6QNONoPjNMoj9MygVL0= github.com/ziutek/mymysql v1.5.4 h1:GB0qdRGsTwQSBVYuVShFBKaXSnSnYYC2d9knnE1LHFs= github.com/ziutek/mymysql v1.5.4/go.mod h1:LMSpPZ6DbqWFxNCHW77HeMg9I646SAhApZ/wKdgO/C0= go.etcd.io/bbolt v1.3.2/go.mod h1:IbVyRI1SCnLcuJnV2u8VeU0CEYM7e686BmAb1XKL+uU= diff --git a/modules/markup/markdown/markdown.go b/modules/markup/markdown/markdown.go index 81b5635d3..c48bbab30 100644 --- a/modules/markup/markdown/markdown.go +++ b/modules/markup/markdown/markdown.go @@ -16,6 +16,7 @@ import ( giteautil "code.gitea.io/gitea/modules/util" "github.com/yuin/goldmark" + meta "github.com/yuin/goldmark-meta" "github.com/yuin/goldmark/extension" "github.com/yuin/goldmark/parser" "github.com/yuin/goldmark/renderer" @@ -53,6 +54,7 @@ func RenderRaw(body []byte, urlPrefix string, wikiMarkdown bool) []byte { extension.Ellipsis: nil, }), ), + meta.New(meta.WithTable()), ), goldmark.WithParserOptions( parser.WithAttribute(), diff --git a/vendor/github.com/yuin/goldmark-meta/.gitignore b/vendor/github.com/yuin/goldmark-meta/.gitignore new file mode 100644 index 000000000..6e4db9226 --- /dev/null +++ b/vendor/github.com/yuin/goldmark-meta/.gitignore @@ -0,0 +1,13 @@ +# Binaries for programs and plugins +*.exe +*.exe~ +*.dll +*.so +*.dylib + +# Test binary, build with `go test -c` +*.test +*.pprof + +# Output of the go coverage tool, specifically when used with LiteIDE +*.out diff --git a/vendor/github.com/yuin/goldmark-meta/LICENSE b/vendor/github.com/yuin/goldmark-meta/LICENSE new file mode 100644 index 000000000..dc5b2a690 --- /dev/null +++ b/vendor/github.com/yuin/goldmark-meta/LICENSE @@ -0,0 +1,21 @@ +MIT License + +Copyright (c) 2019 Yusuke Inuzuka + +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. diff --git a/vendor/github.com/yuin/goldmark-meta/README.md b/vendor/github.com/yuin/goldmark-meta/README.md new file mode 100644 index 000000000..98f926b35 --- /dev/null +++ b/vendor/github.com/yuin/goldmark-meta/README.md @@ -0,0 +1,147 @@ +goldmark-meta +========================= + +goldmark-meta is an extension for the [goldmark](http://github.com/yuin/goldmark) +that allows you to define document metadata in YAML format. + +Usage +-------------------- + +### Installation + +``` +go get github.com/yuin/goldmark-meta +``` + +### Markdown syntax + +YAML metadata block is a leaf block that can not have any markdown element +as a child. + +YAML metadata must start with a **YAML metadata separator**. +This separator must be at first line of the document. + +A **YAML metadata separator** is a line that only `-` is repeated. + +YAML metadata must end with a **YAML metadata separator**. + +You can define objects as a 1st level item. At deeper level, you can define +any kind of YAML element. + +Example: + +``` +--- +Title: goldmark-meta +Summary: Add YAML metadata to the document +Tags: + - markdown + - goldmark +--- + +# Heading 1 +``` + + +### Access the metadata + +```go +import ( + "bytes" + "fmt" + "github.com/yuin/goldmark" + "github.com/yuin/goldmark/extension" + "github.com/yuin/goldmark/parser" + "github.com/yuin/goldmark-meta" +) + +func main() { + markdown := goldmark.New( + goldmark.WithExtensions( + meta.Meta, + ), + ) + source := `--- +Title: goldmark-meta +Summary: Add YAML metadata to the document +Tags: + - markdown + - goldmark +--- + +# Hello goldmark-meta +` + + var buf bytes.Buffer + context := parser.NewContext() + if err := markdown.Convert([]byte(source), &buf, parser.WithContext(context)); err != nil { + panic(err) + } + metaData := meta.Get(context) + title := metaData["Title"] + fmt.Print(title) +} +``` + +### Render the metadata as a table + +You need to add `extension.TableHTMLRenderer` or the `Table` extension to +render metadata as a table. + +```go +import ( + "bytes" + "fmt" + "github.com/yuin/goldmark" + "github.com/yuin/goldmark/extension" + "github.com/yuin/goldmark/parser" + "github.com/yuin/goldmark/renderer" + "github.com/yuin/goldmark/util" + "github.com/yuin/goldmark-meta" +) + +func main() { + markdown := goldmark.New( + goldmark.WithExtensions( + meta.New(meta.WithTable()), + ), + goldmark.WithRendererOptions( + renderer.WithNodeRenderers( + util.Prioritized(extension.NewTableHTMLRenderer(), 500), + ), + ), + ) + // OR + // markdown := goldmark.New( + // goldmark.WithExtensions( + // meta.New(meta.WithTable()), + // extension.Table, + // ), + // ) + source := `--- +Title: goldmark-meta +Summary: Add YAML metadata to the document +Tags: + - markdown + - goldmark +--- + +# Hello goldmark-meta +` + + var buf bytes.Buffer + if err := markdown.Convert([]byte(source), &buf); err != nil { + panic(err) + } + fmt.Print(buf.String()) +} +``` + + +License +-------------------- +MIT + +Author +-------------------- +Yusuke Inuzuka diff --git a/vendor/github.com/yuin/goldmark-meta/go.mod b/vendor/github.com/yuin/goldmark-meta/go.mod new file mode 100644 index 000000000..b5496c175 --- /dev/null +++ b/vendor/github.com/yuin/goldmark-meta/go.mod @@ -0,0 +1,8 @@ +module github.com/yuin/goldmark-meta + +go 1.13 + +require ( + github.com/yuin/goldmark v1.1.7 + gopkg.in/yaml.v2 v2.2.2 +) diff --git a/vendor/github.com/yuin/goldmark-meta/go.sum b/vendor/github.com/yuin/goldmark-meta/go.sum new file mode 100644 index 000000000..7cd925cd5 --- /dev/null +++ b/vendor/github.com/yuin/goldmark-meta/go.sum @@ -0,0 +1,6 @@ +github.com/yuin/goldmark v1.1.7 h1:XiwWADvxJeIM1JbXqthrEhDc19hTMui+o+QaY1hGXlk= +github.com/yuin/goldmark v1.1.7/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74= +gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM= +gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= +gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw= +gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= diff --git a/vendor/github.com/yuin/goldmark-meta/meta.go b/vendor/github.com/yuin/goldmark-meta/meta.go new file mode 100644 index 000000000..286043713 --- /dev/null +++ b/vendor/github.com/yuin/goldmark-meta/meta.go @@ -0,0 +1,218 @@ +// package meta is a extension for the goldmark(http://github.com/yuin/goldmark). +// +// This extension parses YAML metadata blocks and store metadata to a +// parser.Context. +package meta + +import ( + "bytes" + "fmt" + "github.com/yuin/goldmark" + gast "github.com/yuin/goldmark/ast" + east "github.com/yuin/goldmark/extension/ast" + "github.com/yuin/goldmark/parser" + "github.com/yuin/goldmark/text" + "github.com/yuin/goldmark/util" + + "gopkg.in/yaml.v2" +) + +type data struct { + Map map[string]interface{} + Items yaml.MapSlice + Error error + Node gast.Node +} + +var contextKey = parser.NewContextKey() + +// Get returns a YAML metadata. +func Get(pc parser.Context) map[string]interface{} { + v := pc.Get(contextKey) + if v == nil { + return nil + } + d := v.(*data) + return d.Map +} + +// GetItems returns a YAML metadata. +// GetItems preserves defined key order. +func GetItems(pc parser.Context) yaml.MapSlice { + v := pc.Get(contextKey) + if v == nil { + return nil + } + d := v.(*data) + return d.Items +} + +type metaParser struct { +} + +var defaultMetaParser = &metaParser{} + +// NewParser returns a BlockParser that can parse YAML metadata blocks. +func NewParser() parser.BlockParser { + return defaultMetaParser +} + +func isSeparator(line []byte) bool { + line = util.TrimRightSpace(util.TrimLeftSpace(line)) + for i := 0; i < len(line); i++ { + if line[i] != '-' { + return false + } + } + return true +} + +func (b *metaParser) Trigger() []byte { + return []byte{'-'} +} + +func (b *metaParser) Open(parent gast.Node, reader text.Reader, pc parser.Context) (gast.Node, parser.State) { + linenum, _ := reader.Position() + if linenum != 0 { + return nil, parser.NoChildren + } + line, _ := reader.PeekLine() + if isSeparator(line) { + return gast.NewTextBlock(), parser.NoChildren + } + return nil, parser.NoChildren +} + +func (b *metaParser) Continue(node gast.Node, reader text.Reader, pc parser.Context) parser.State { + line, segment := reader.PeekLine() + if isSeparator(line) { + reader.Advance(segment.Len()) + return parser.Close + } + node.Lines().Append(segment) + return parser.Continue | parser.NoChildren +} + +func (b *metaParser) Close(node gast.Node, reader text.Reader, pc parser.Context) { + lines := node.Lines() + var buf bytes.Buffer + for i := 0; i < lines.Len(); i++ { + segment := lines.At(i) + buf.Write(segment.Value(reader.Source())) + } + d := &data{} + d.Node = node + meta := map[string]interface{}{} + if err := yaml.Unmarshal(buf.Bytes(), &meta); err != nil { + d.Error = err + } else { + d.Map = meta + } + + metaMapSlice := yaml.MapSlice{} + if err := yaml.Unmarshal(buf.Bytes(), &metaMapSlice); err != nil { + d.Error = err + } else { + d.Items = metaMapSlice + } + + pc.Set(contextKey, d) + + if d.Error == nil { + node.Parent().RemoveChild(node.Parent(), node) + } +} + +func (b *metaParser) CanInterruptParagraph() bool { + return false +} + +func (b *metaParser) CanAcceptIndentedLine() bool { + return false +} + +type astTransformer struct { +} + +var defaultASTTransformer = &astTransformer{} + +func (a *astTransformer) Transform(node *gast.Document, reader text.Reader, pc parser.Context) { + dtmp := pc.Get(contextKey) + if dtmp == nil { + return + } + d := dtmp.(*data) + if d.Error != nil { + msg := gast.NewString([]byte(fmt.Sprintf("", d.Error))) + msg.SetCode(true) + d.Node.AppendChild(d.Node, msg) + return + } + + meta := GetItems(pc) + if meta == nil { + return + } + table := east.NewTable() + alignments := []east.Alignment{} + for range meta { + alignments = append(alignments, east.AlignNone) + } + row := east.NewTableRow(alignments) + for _, item := range meta { + cell := east.NewTableCell() + cell.AppendChild(cell, gast.NewString([]byte(fmt.Sprintf("%v", item.Key)))) + row.AppendChild(row, cell) + } + table.AppendChild(table, east.NewTableHeader(row)) + + row = east.NewTableRow(alignments) + for _, item := range meta { + cell := east.NewTableCell() + cell.AppendChild(cell, gast.NewString([]byte(fmt.Sprintf("%v", item.Value)))) + row.AppendChild(row, cell) + } + table.AppendChild(table, row) + node.InsertBefore(node, node.FirstChild(), table) +} + +// Option is a functional option type for this extension. +type Option func(*meta) + +// WithTable is a functional option that renders a YAML metadata as a table. +func WithTable() Option { + return func(m *meta) { + m.Table = true + } +} + +type meta struct { + Table bool +} + +// Meta is a extension for the goldmark. +var Meta = &meta{} + +// New returns a new Meta extension. +func New(opts ...Option) goldmark.Extender { + e := &meta{} + for _, opt := range opts { + opt(e) + } + return e +} + +func (e *meta) Extend(m goldmark.Markdown) { + m.Parser().AddOptions( + parser.WithBlockParsers( + util.Prioritized(NewParser(), 0), + ), + ) + if e.Table { + m.Parser().AddOptions( + parser.WithASTTransformers( + util.Prioritized(defaultASTTransformer, 0), + ), + ) + } +} diff --git a/vendor/modules.txt b/vendor/modules.txt index ea20dc305..8a7c6706e 100644 --- a/vendor/modules.txt +++ b/vendor/modules.txt @@ -654,6 +654,9 @@ github.com/yuin/goldmark/renderer github.com/yuin/goldmark/renderer/html github.com/yuin/goldmark/text github.com/yuin/goldmark/util +# github.com/yuin/goldmark-meta v0.0.0-20191126180153-f0638e958b60 +## explicit +github.com/yuin/goldmark-meta # go.etcd.io/bbolt v1.3.3 ## explicit # go.mongodb.org/mongo-driver v1.1.1