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@ -5,35 +5,78 @@ |
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package base |
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package base |
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import ( |
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import ( |
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"github.com/slene/blackfriday" |
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"bytes" |
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"path" |
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"github.com/gogits/gfm" |
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) |
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) |
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func RenderMarkdown(rawBytes []byte) []byte { |
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func isletter(c byte) bool { |
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return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') |
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} |
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func isalnum(c byte) bool { |
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return (c >= '0' && c <= '9') || isletter(c) |
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} |
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var validLinks = [][]byte{[]byte("http://"), []byte("https://"), []byte("ftp://"), []byte("mailto://")} |
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func isLink(link []byte) bool { |
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for _, prefix := range validLinks { |
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if len(link) > len(prefix) && bytes.Equal(bytes.ToLower(link[:len(prefix)]), prefix) && isalnum(link[len(prefix)]) { |
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return true |
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} |
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} |
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return false |
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} |
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type CustomRender struct { |
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gfm.Renderer |
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urlPrefix string |
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} |
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func (options *CustomRender) Link(out *bytes.Buffer, link []byte, title []byte, content []byte) { |
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if len(link) > 0 && !isLink(link) { |
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if link[0] == '#' { |
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link = append([]byte(options.urlPrefix), link...) |
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} else { |
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link = []byte(path.Join(options.urlPrefix, string(link))) |
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} |
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} |
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options.Renderer.Link(out, link, title, content) |
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} |
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func RenderMarkdown(rawBytes []byte, urlPrefix string) []byte { |
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htmlFlags := 0 |
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htmlFlags := 0 |
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htmlFlags |= blackfriday.HTML_USE_XHTML |
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htmlFlags |= gfm.HTML_USE_XHTML |
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// htmlFlags |= blackfriday.HTML_USE_SMARTYPANTS
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// htmlFlags |= gfm.HTML_USE_SMARTYPANTS
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// htmlFlags |= blackfriday.HTML_SMARTYPANTS_FRACTIONS
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// htmlFlags |= gfm.HTML_SMARTYPANTS_FRACTIONS
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// htmlFlags |= blackfriday.HTML_SMARTYPANTS_LATEX_DASHES
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// htmlFlags |= gfm.HTML_SMARTYPANTS_LATEX_DASHES
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htmlFlags |= blackfriday.HTML_SKIP_HTML |
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htmlFlags |= gfm.HTML_SKIP_HTML |
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htmlFlags |= blackfriday.HTML_SKIP_STYLE |
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htmlFlags |= gfm.HTML_SKIP_STYLE |
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htmlFlags |= blackfriday.HTML_SKIP_SCRIPT |
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htmlFlags |= gfm.HTML_SKIP_SCRIPT |
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htmlFlags |= blackfriday.HTML_GITHUB_BLOCKCODE |
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htmlFlags |= gfm.HTML_GITHUB_BLOCKCODE |
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htmlFlags |= blackfriday.HTML_OMIT_CONTENTS |
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htmlFlags |= gfm.HTML_OMIT_CONTENTS |
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htmlFlags |= blackfriday.HTML_COMPLETE_PAGE |
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htmlFlags |= gfm.HTML_COMPLETE_PAGE |
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renderer := blackfriday.HtmlRenderer(htmlFlags, "", "") |
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renderer := &CustomRender{ |
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Renderer: gfm.HtmlRenderer(htmlFlags, "", ""), |
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urlPrefix: urlPrefix, |
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} |
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// set up the parser
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// set up the parser
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extensions := 0 |
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extensions := 0 |
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extensions |= blackfriday.EXTENSION_NO_INTRA_EMPHASIS |
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extensions |= gfm.EXTENSION_NO_INTRA_EMPHASIS |
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extensions |= blackfriday.EXTENSION_TABLES |
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extensions |= gfm.EXTENSION_TABLES |
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extensions |= blackfriday.EXTENSION_FENCED_CODE |
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extensions |= gfm.EXTENSION_FENCED_CODE |
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extensions |= blackfriday.EXTENSION_AUTOLINK |
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extensions |= gfm.EXTENSION_AUTOLINK |
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extensions |= blackfriday.EXTENSION_STRIKETHROUGH |
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extensions |= gfm.EXTENSION_STRIKETHROUGH |
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extensions |= blackfriday.EXTENSION_HARD_LINE_BREAK |
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extensions |= gfm.EXTENSION_HARD_LINE_BREAK |
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extensions |= blackfriday.EXTENSION_SPACE_HEADERS |
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extensions |= gfm.EXTENSION_SPACE_HEADERS |
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extensions |= blackfriday.EXTENSION_NO_EMPTY_LINE_BEFORE_BLOCK |
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extensions |= gfm.EXTENSION_NO_EMPTY_LINE_BEFORE_BLOCK |
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body := blackfriday.Markdown(rawBytes, renderer, extensions) |
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body := gfm.Markdown(rawBytes, renderer, extensions) |
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return body |
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return body |
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} |
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} |
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