diff options
Diffstat (limited to 'gemtext/mdconv')
| -rw-r--r-- | gemtext/mdconv/convert.go | 104 | ||||
| -rw-r--r-- | gemtext/mdconv/convert_test.go | 7 |
2 files changed, 55 insertions, 56 deletions
diff --git a/gemtext/mdconv/convert.go b/gemtext/mdconv/convert.go index 0c92f9f..9371d92 100644 --- a/gemtext/mdconv/convert.go +++ b/gemtext/mdconv/convert.go @@ -1,72 +1,72 @@ package mdconv import ( - "fmt" "io" "text/template" "tildegit.org/tjp/gus/gemtext" + "tildegit.org/tjp/gus/gemtext/internal" ) +// Convert writes markdown to a writer from the provided gemtext document. +// +// Templates can be provided to override the output for different line types. +// The templates supported are: +// - "header" is called before any lines and is passed the full Document. +// - "footer" is called after the lines and is passed the full Document. +// - "textline" is called once per line of text and is passed a gemtext.TextLine. +// - "linkline" is called once per link line and is passed a gemtext.LinkLine. +// - "preformattedtextlines" is called once for a block of preformatted text and is +// passed a slice of gemtext.PreformattedTextLines. +// - "heading1line" is called once per h1 line and is passed a gemtext.Heading1Line. +// - "heading2line" is called once per h2 line and is passed a gemtext.Heading2Line. +// - "heading3line" is called once per h3 line and is passed a gemtext.Heading3Line. +// - "listitemlines" is called once for a block of contiguous list item lines and +// is passed a slice of gemtext.ListItemLines. +// - "quoteline" is passed once per blockquote line and is passed a gemtext.QuoteLine. +// +// There exist default implementations of each of these templates, so the "overrides" +// argument can be nil. func Convert(wr io.Writer, doc gemtext.Document, overrides *template.Template) error { + if err := internal.ValidateLinks(doc); err != nil { + return err + } + tmpl, err := baseTmpl.Clone() if err != nil { return err } - if overrides != nil { - for _, override := range overrides.Templates() { - tmpl, err = tmpl.AddParseTree(override.Name(), override.Tree) - if err != nil { - return err - } + tmpl, err = internal.AddAllTemplates(tmpl, overrides) + if err != nil { + return err + } + + for _, item := range internal.RenderItems(doc) { + if err := tmpl.ExecuteTemplate(wr, item.Template, item.Object); err != nil { + return err } } - return tmpl.ExecuteTemplate(wr, "mdconv", doc) + return nil } -var baseTmpl = template.Must(template.New("mdconv").Parse(fmt.Sprintf((` -{{block "header" .}}{{end -}} -{{range . -}} -{{if .Type | eq %d}}{{block "textline" . -}} - {{. -}} -{{end -}} -{{else if .Type | eq %d}}{{block "linkline" . -}} - => [{{if eq .Label ""}}{{.URL}}{{else}}{{.Label}}{{end}}]({{.URL}}) -{{end -}} -{{else if .Type | eq %d}}{{block "preformattoggleline" . -}} - ` + "```" + ` -{{end -}} -{{else if .Type | eq %d}}{{block "preformattedtextline" . -}} - {{. -}} -{{end -}} -{{else if .Type | eq %d}}{{block "heading1line" . -}} - # {{.Body}} -{{end -}} -{{else if .Type | eq %d}}{{block "heading2line" . -}} - ## {{.Body}} -{{end -}} -{{else if .Type | eq %d}}{{block "heading3line" . -}} - ### {{.Body}} -{{end -}} -{{else if .Type | eq %d}}{{block "listitemline" . -}} - * {{.Body}} -{{end -}} -{{else if .Type | eq %d}}{{block "quoteline" . -}} - > {{.Body}} -{{end -}} -{{end -}} -{{end -}} -{{block "footer" .}}{{end -}} -`)[1:], - gemtext.LineTypeText, - gemtext.LineTypeLink, - gemtext.LineTypePreformatToggle, - gemtext.LineTypePreformattedText, - gemtext.LineTypeHeading1, - gemtext.LineTypeHeading2, - gemtext.LineTypeHeading3, - gemtext.LineTypeListItem, - gemtext.LineTypeQuote, -))) +var baseTmpl = template.Must(template.New("mdconv").Parse(` +{{ define "header" }}{{ end }} +{{ define "textline" }}{{ . }}{{ end }} +{{ define "linkline" -}} + => [{{ if eq .Label "" }}{{ .URL }}{{ else }}{{ .Label }}{{ end }}]({{ .URL }}) +{{ end }} +{{ define "preformattedtextlines" }}` + "```\n" + `{{ range . }}{{ . }}{{ end }}` + "```\n" + `{{ end }} +{{ define "heading1line" }}# {{ .Body }} +{{ end }} +{{ define "heading2line" }}## {{ .Body }} +{{ end }} +{{ define "heading3line" }}### {{ .Body }} +{{ end }} +{{ define "listitemlines" }}{{ range . }}* {{ .Body }} +{{ end }}{{ end }} +{{ define "quoteline" }}> {{ .Body }} +{{ end }} +{{ define "footer" }}{{ end }} +`)) diff --git a/gemtext/mdconv/convert_test.go b/gemtext/mdconv/convert_test.go index 6cde08b..010ddce 100644 --- a/gemtext/mdconv/convert_test.go +++ b/gemtext/mdconv/convert_test.go @@ -78,17 +78,16 @@ text: > quote: this is a quote > quote: -tjp text: -`[1:] + "pftoggle: ```\npf: doc := gemtext.Parse(req.Body)\npftoggle: ```\n" +`[1:] + "```\npf: doc := gemtext.Parse(req.Body)\n```\n" overrides := template.Must(template.New("overrides").Parse((` {{define "textline"}}text: {{.}}{{end}} {{define "linkline"}}=> link: [{{if eq .Label ""}}{{.URL}}{{else}}{{.Label}}{{end}}]({{.URL}})` + "\n" + `{{end}} - {{define "preformattoggleline"}}pftoggle: ` + "```\n" + `{{end}} - {{define "preformattedtextline"}}pf: {{.}}{{end}} + {{define "preformattedtextlines"}}` + "```\n" + `{{range . }}pf: {{.}}{{end}}` + "```\n" + `{{end}} {{define "heading1line"}}# h1: {{.Body}}` + "\n" + `{{end}} {{define "heading2line"}}## h2: {{.Body}}` + "\n" + `{{end}} {{define "heading3line"}}### h3: {{.Body}}` + "\n" + `{{end}} - {{define "listitemline"}}* li: {{.Body}}` + "\n" + `{{end}} + {{define "listitemlines"}}{{range .}}* li: {{.Body}}` + "\n" + `{{end}}{{end}} {{define "quoteline"}}> quote: {{.Body}}` + "\n" + `{{end}} `)[1:])) |