From 0d80af649a50c4b9e5e4ba764399872fc92f70f2 Mon Sep 17 00:00:00 2001
From: Lunny Xiao <xiaolunwen@gmail.com>
Date: Thu, 21 Sep 2017 13:20:14 +0800
Subject: [PATCH] Add init support of orgmode document type on file view and
 readme (#2525)

* add init support of orgmode document type on file view and readme

* fix imports

* fix imports and readmeExist

* fix imports order

* fix format

* remove unnecessary convert
---
 main.go                                       |   4 +
 models/mail.go                                |   2 +-
 modules/markup/html_test.go                   |   2 +-
 modules/{ => markup}/markdown/markdown.go     |  18 +-
 .../{ => markup}/markdown/markdown_test.go    |  43 +-
 modules/markup/markup_test.go                 |   2 +-
 modules/markup/orgmode/orgmode.go             |  56 ++
 modules/markup/orgmode/orgmode_test.go        |  54 ++
 routers/api/v1/misc/markdown.go               |   2 +-
 routers/repo/issue.go                         |   2 +-
 routers/repo/release.go                       |   2 +-
 routers/repo/view.go                          |  10 +-
 routers/repo/wiki.go                          |   2 +-
 templates/repo/view_file.tmpl                 |   4 +-
 .../github.com/chaseadamsio/goorgeous/LICENSE |  21 +
 .../chaseadamsio/goorgeous/README.org         |  66 ++
 .../chaseadamsio/goorgeous/goorgeous.go       | 803 ++++++++++++++++++
 .../chaseadamsio/goorgeous/gopher.gif         | Bin 0 -> 15232 bytes
 .../chaseadamsio/goorgeous/gopher_small.gif   | Bin 0 -> 3270 bytes
 .../chaseadamsio/goorgeous/header.go          |  70 ++
 vendor/vendor.json                            |   6 +
 21 files changed, 1103 insertions(+), 66 deletions(-)
 rename modules/{ => markup}/markdown/markdown.go (95%)
 rename modules/{ => markup}/markdown/markdown_test.go (89%)
 create mode 100644 modules/markup/orgmode/orgmode.go
 create mode 100644 modules/markup/orgmode/orgmode_test.go
 create mode 100644 vendor/github.com/chaseadamsio/goorgeous/LICENSE
 create mode 100644 vendor/github.com/chaseadamsio/goorgeous/README.org
 create mode 100644 vendor/github.com/chaseadamsio/goorgeous/goorgeous.go
 create mode 100644 vendor/github.com/chaseadamsio/goorgeous/gopher.gif
 create mode 100644 vendor/github.com/chaseadamsio/goorgeous/gopher_small.gif
 create mode 100644 vendor/github.com/chaseadamsio/goorgeous/header.go

diff --git a/main.go b/main.go
index 383dbc2093..c2acda99af 100644
--- a/main.go
+++ b/main.go
@@ -13,6 +13,10 @@ import (
 	"code.gitea.io/gitea/cmd"
 	"code.gitea.io/gitea/modules/log"
 	"code.gitea.io/gitea/modules/setting"
+	// register supported doc types
+	_ "code.gitea.io/gitea/modules/markup/markdown"
+	_ "code.gitea.io/gitea/modules/markup/orgmode"
+
 	"github.com/urfave/cli"
 )
 
diff --git a/models/mail.go b/models/mail.go
index afcddb6d23..98766f69f2 100644
--- a/models/mail.go
+++ b/models/mail.go
@@ -13,8 +13,8 @@ import (
 	"code.gitea.io/gitea/modules/base"
 	"code.gitea.io/gitea/modules/log"
 	"code.gitea.io/gitea/modules/mailer"
-	"code.gitea.io/gitea/modules/markdown"
 	"code.gitea.io/gitea/modules/markup"
+	"code.gitea.io/gitea/modules/markup/markdown"
 	"code.gitea.io/gitea/modules/setting"
 	"gopkg.in/gomail.v2"
 	"gopkg.in/macaron.v1"
diff --git a/modules/markup/html_test.go b/modules/markup/html_test.go
index 407115526d..ab2ca5ef47 100644
--- a/modules/markup/html_test.go
+++ b/modules/markup/html_test.go
@@ -10,8 +10,8 @@ import (
 	"strings"
 	"testing"
 
-	_ "code.gitea.io/gitea/modules/markdown"
 	. "code.gitea.io/gitea/modules/markup"
+	_ "code.gitea.io/gitea/modules/markup/markdown"
 	"code.gitea.io/gitea/modules/setting"
 
 	"github.com/stretchr/testify/assert"
diff --git a/modules/markdown/markdown.go b/modules/markup/markdown/markdown.go
similarity index 95%
rename from modules/markdown/markdown.go
rename to modules/markup/markdown/markdown.go
index 6cf2d9eaa1..f0ed0e03ab 100644
--- a/modules/markdown/markdown.go
+++ b/modules/markup/markdown/markdown.go
@@ -17,8 +17,8 @@ import (
 // Renderer is a extended version of underlying render object.
 type Renderer struct {
 	blackfriday.Renderer
-	urlPrefix      string
-	isWikiMarkdown bool
+	URLPrefix string
+	IsWiki    bool
 }
 
 // Link defines how formal links should be processed to produce corresponding HTML elements.
@@ -26,10 +26,10 @@ func (r *Renderer) Link(out *bytes.Buffer, link []byte, title []byte, content []
 	if len(link) > 0 && !markup.IsLink(link) {
 		if link[0] != '#' {
 			lnk := string(link)
-			if r.isWikiMarkdown {
+			if r.IsWiki {
 				lnk = markup.URLJoin("wiki", lnk)
 			}
-			mLink := markup.URLJoin(r.urlPrefix, lnk)
+			mLink := markup.URLJoin(r.URLPrefix, lnk)
 			link = []byte(mLink)
 		}
 	}
@@ -95,8 +95,8 @@ var (
 
 // Image defines how images should be processed to produce corresponding HTML elements.
 func (r *Renderer) Image(out *bytes.Buffer, link []byte, title []byte, alt []byte) {
-	prefix := r.urlPrefix
-	if r.isWikiMarkdown {
+	prefix := r.URLPrefix
+	if r.IsWiki {
 		prefix = markup.URLJoin(prefix, "wiki", "src")
 	}
 	prefix = strings.Replace(prefix, "/src/", "/raw/", 1)
@@ -129,9 +129,9 @@ func RenderRaw(body []byte, urlPrefix string, wikiMarkdown bool) []byte {
 	htmlFlags |= blackfriday.HTML_SKIP_STYLE
 	htmlFlags |= blackfriday.HTML_OMIT_CONTENTS
 	renderer := &Renderer{
-		Renderer:       blackfriday.HtmlRenderer(htmlFlags, "", ""),
-		urlPrefix:      urlPrefix,
-		isWikiMarkdown: wikiMarkdown,
+		Renderer:  blackfriday.HtmlRenderer(htmlFlags, "", ""),
+		URLPrefix: urlPrefix,
+		IsWiki:    wikiMarkdown,
 	}
 
 	// set up the parser
diff --git a/modules/markdown/markdown_test.go b/modules/markup/markdown/markdown_test.go
similarity index 89%
rename from modules/markdown/markdown_test.go
rename to modules/markup/markdown/markdown_test.go
index 1b57e4f203..9ca3de01ca 100644
--- a/modules/markdown/markdown_test.go
+++ b/modules/markup/markdown/markdown_test.go
@@ -5,13 +5,11 @@
 package markdown_test
 
 import (
-	"fmt"
-	"strconv"
 	"strings"
 	"testing"
 
-	. "code.gitea.io/gitea/modules/markdown"
 	"code.gitea.io/gitea/modules/markup"
+	. "code.gitea.io/gitea/modules/markup/markdown"
 	"code.gitea.io/gitea/modules/setting"
 
 	"github.com/stretchr/testify/assert"
@@ -21,45 +19,6 @@ const AppURL = "http://localhost:3000/"
 const Repo = "gogits/gogs"
 const AppSubURL = AppURL + Repo + "/"
 
-var numericMetas = map[string]string{
-	"format": "https://someurl.com/{user}/{repo}/{index}",
-	"user":   "someUser",
-	"repo":   "someRepo",
-	"style":  markup.IssueNameStyleNumeric,
-}
-
-var alphanumericMetas = map[string]string{
-	"format": "https://someurl.com/{user}/{repo}/{index}",
-	"user":   "someUser",
-	"repo":   "someRepo",
-	"style":  markup.IssueNameStyleAlphanumeric,
-}
-
-// numericLink an HTML to a numeric-style issue
-func numericIssueLink(baseURL string, index int) string {
-	return link(markup.URLJoin(baseURL, strconv.Itoa(index)), fmt.Sprintf("#%d", index))
-}
-
-// alphanumLink an HTML link to an alphanumeric-style issue
-func alphanumIssueLink(baseURL string, name string) string {
-	return link(markup.URLJoin(baseURL, name), name)
-}
-
-// urlContentsLink an HTML link whose contents is the target URL
-func urlContentsLink(href string) string {
-	return link(href, href)
-}
-
-// link an HTML link
-func link(href, contents string) string {
-	return fmt.Sprintf("<a href=\"%s\">%s</a>", href, contents)
-}
-
-func testRenderIssueIndexPattern(t *testing.T, input, expected string, metas map[string]string) {
-	assert.Equal(t, expected,
-		string(markup.RenderIssueIndexPattern([]byte(input), AppSubURL, metas)))
-}
-
 func TestRender_StandardLinks(t *testing.T) {
 	setting.AppURL = AppURL
 	setting.AppSubURL = AppSubURL
diff --git a/modules/markup/markup_test.go b/modules/markup/markup_test.go
index 8d061ae39e..b0ebfae57d 100644
--- a/modules/markup/markup_test.go
+++ b/modules/markup/markup_test.go
@@ -7,8 +7,8 @@ package markup_test
 import (
 	"testing"
 
-	_ "code.gitea.io/gitea/modules/markdown"
 	. "code.gitea.io/gitea/modules/markup"
+	_ "code.gitea.io/gitea/modules/markup/markdown"
 
 	"github.com/stretchr/testify/assert"
 )
diff --git a/modules/markup/orgmode/orgmode.go b/modules/markup/orgmode/orgmode.go
new file mode 100644
index 0000000000..f9223a18b5
--- /dev/null
+++ b/modules/markup/orgmode/orgmode.go
@@ -0,0 +1,56 @@
+// Copyright 2017 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package markup
+
+import (
+	"code.gitea.io/gitea/modules/markup"
+	"code.gitea.io/gitea/modules/markup/markdown"
+
+	"github.com/chaseadamsio/goorgeous"
+	"github.com/russross/blackfriday"
+)
+
+func init() {
+	markup.RegisterParser(Parser{})
+}
+
+// Parser implements markup.Parser for orgmode
+type Parser struct {
+}
+
+// Name implements markup.Parser
+func (Parser) Name() string {
+	return "orgmode"
+}
+
+// Extensions implements markup.Parser
+func (Parser) Extensions() []string {
+	return []string{".org"}
+}
+
+// Render renders orgmode rawbytes to HTML
+func Render(rawBytes []byte, urlPrefix string, metas map[string]string, isWiki bool) []byte {
+	htmlFlags := blackfriday.HTML_USE_XHTML
+	htmlFlags |= blackfriday.HTML_SKIP_STYLE
+	htmlFlags |= blackfriday.HTML_OMIT_CONTENTS
+	renderer := &markdown.Renderer{
+		Renderer:  blackfriday.HtmlRenderer(htmlFlags, "", ""),
+		URLPrefix: urlPrefix,
+		IsWiki:    isWiki,
+	}
+
+	result := goorgeous.Org(rawBytes, renderer)
+	return result
+}
+
+// RenderString reners orgmode string to HTML string
+func RenderString(rawContent string, urlPrefix string, metas map[string]string, isWiki bool) string {
+	return string(Render([]byte(rawContent), urlPrefix, metas, isWiki))
+}
+
+// Render implements markup.Parser
+func (Parser) Render(rawBytes []byte, urlPrefix string, metas map[string]string, isWiki bool) []byte {
+	return Render(rawBytes, urlPrefix, metas, isWiki)
+}
diff --git a/modules/markup/orgmode/orgmode_test.go b/modules/markup/orgmode/orgmode_test.go
new file mode 100644
index 0000000000..a68ab5d3af
--- /dev/null
+++ b/modules/markup/orgmode/orgmode_test.go
@@ -0,0 +1,54 @@
+// Copyright 2017 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package markup
+
+import (
+	"strings"
+	"testing"
+
+	"code.gitea.io/gitea/modules/markup"
+	"code.gitea.io/gitea/modules/setting"
+
+	"github.com/stretchr/testify/assert"
+)
+
+const AppURL = "http://localhost:3000/"
+const Repo = "gogits/gogs"
+const AppSubURL = AppURL + Repo + "/"
+
+func TestRender_StandardLinks(t *testing.T) {
+	setting.AppURL = AppURL
+	setting.AppSubURL = AppSubURL
+
+	test := func(input, expected string) {
+		buffer := RenderString(input, setting.AppSubURL, nil, false)
+		assert.Equal(t, strings.TrimSpace(expected), strings.TrimSpace(buffer))
+	}
+
+	googleRendered := `<p><a href="https://google.com/" title="https://google.com/">https://google.com/</a></p>`
+	test("[[https://google.com/]]", googleRendered)
+
+	lnk := markup.URLJoin(AppSubURL, "WikiPage")
+	test("[[WikiPage][WikiPage]]",
+		`<p><a href="`+lnk+`" title="WikiPage">WikiPage</a></p>`)
+}
+
+func TestRender_Images(t *testing.T) {
+	setting.AppURL = AppURL
+	setting.AppSubURL = AppSubURL
+
+	test := func(input, expected string) {
+		buffer := RenderString(input, setting.AppSubURL, nil, false)
+		assert.Equal(t, strings.TrimSpace(expected), strings.TrimSpace(buffer))
+	}
+
+	url := "../../.images/src/02/train.jpg"
+	title := "Train"
+	result := markup.URLJoin(AppSubURL, url)
+
+	test(
+		"[[file:"+url+"]["+title+"]]",
+		`<p><a href="`+result+`"><img src="`+result+`" alt="`+title+`" title="`+title+`" /></a></p>`)
+}
diff --git a/routers/api/v1/misc/markdown.go b/routers/api/v1/misc/markdown.go
index a2e65ecb0a..8e3c66841f 100644
--- a/routers/api/v1/misc/markdown.go
+++ b/routers/api/v1/misc/markdown.go
@@ -8,8 +8,8 @@ import (
 	api "code.gitea.io/sdk/gitea"
 
 	"code.gitea.io/gitea/modules/context"
-	"code.gitea.io/gitea/modules/markdown"
 	"code.gitea.io/gitea/modules/markup"
+	"code.gitea.io/gitea/modules/markup/markdown"
 	"code.gitea.io/gitea/modules/setting"
 )
 
diff --git a/routers/repo/issue.go b/routers/repo/issue.go
index 4c4f9037bf..091268116b 100644
--- a/routers/repo/issue.go
+++ b/routers/repo/issue.go
@@ -24,7 +24,7 @@ import (
 	"code.gitea.io/gitea/modules/context"
 	"code.gitea.io/gitea/modules/indexer"
 	"code.gitea.io/gitea/modules/log"
-	"code.gitea.io/gitea/modules/markdown"
+	"code.gitea.io/gitea/modules/markup/markdown"
 	"code.gitea.io/gitea/modules/notification"
 	"code.gitea.io/gitea/modules/setting"
 	"code.gitea.io/gitea/modules/util"
diff --git a/routers/repo/release.go b/routers/repo/release.go
index fe68f1b6f1..da99dd7713 100644
--- a/routers/repo/release.go
+++ b/routers/repo/release.go
@@ -12,7 +12,7 @@ import (
 	"code.gitea.io/gitea/modules/base"
 	"code.gitea.io/gitea/modules/context"
 	"code.gitea.io/gitea/modules/log"
-	"code.gitea.io/gitea/modules/markdown"
+	"code.gitea.io/gitea/modules/markup/markdown"
 	"code.gitea.io/gitea/modules/setting"
 
 	"github.com/Unknwon/paginater"
diff --git a/routers/repo/view.go b/routers/repo/view.go
index d794a57405..bfba7acac8 100644
--- a/routers/repo/view.go
+++ b/routers/repo/view.go
@@ -95,11 +95,11 @@ func renderDirectory(ctx *context.Context, treeLink string) {
 			buf = append(buf, d...)
 			newbuf := markup.Render(readmeFile.Name(), buf, treeLink, ctx.Repo.Repository.ComposeMetas())
 			if newbuf != nil {
-				ctx.Data["IsMarkdown"] = true
+				ctx.Data["IsMarkup"] = true
 			} else {
 				// FIXME This is the only way to show non-markdown files
 				// instead of a broken "View Raw" link
-				ctx.Data["IsMarkdown"] = true
+				ctx.Data["IsMarkup"] = false
 				newbuf = bytes.Replace(buf, []byte("\n"), []byte(`<br>`), -1)
 			}
 			ctx.Data["FileContent"] = string(newbuf)
@@ -197,10 +197,8 @@ func renderFile(ctx *context.Context, entry *git.TreeEntry, treeLink, rawLink st
 
 		tp := markup.Type(blob.Name())
 		isSupportedMarkup := tp != ""
-		// FIXME: currently set IsMarkdown for compatible
-		ctx.Data["IsMarkdown"] = isSupportedMarkup
-
-		readmeExist := isSupportedMarkup || markup.IsReadmeFile(blob.Name())
+		ctx.Data["IsMarkup"] = isSupportedMarkup
+		readmeExist := markup.IsReadmeFile(blob.Name())
 		ctx.Data["ReadmeExist"] = readmeExist
 		if readmeExist && isSupportedMarkup {
 			ctx.Data["FileContent"] = string(markup.Render(blob.Name(), buf, path.Dir(treeLink), ctx.Repo.Repository.ComposeMetas()))
diff --git a/routers/repo/wiki.go b/routers/repo/wiki.go
index 2a73fdc41e..019c3d5d16 100644
--- a/routers/repo/wiki.go
+++ b/routers/repo/wiki.go
@@ -18,8 +18,8 @@ import (
 	"code.gitea.io/gitea/modules/auth"
 	"code.gitea.io/gitea/modules/base"
 	"code.gitea.io/gitea/modules/context"
-	"code.gitea.io/gitea/modules/markdown"
 	"code.gitea.io/gitea/modules/markup"
+	"code.gitea.io/gitea/modules/markup/markdown"
 )
 
 const (
diff --git a/templates/repo/view_file.tmpl b/templates/repo/view_file.tmpl
index 36fccb00b3..898b9b5557 100644
--- a/templates/repo/view_file.tmpl
+++ b/templates/repo/view_file.tmpl
@@ -36,8 +36,8 @@
 		{{end}}
 	</h4>
 	<div class="ui attached table segment">
-		<div class="file-view {{if .IsMarkdown}}markdown{{else if .IsTextFile}}code-view{{end}} has-emoji">
-			{{if .IsMarkdown}}
+		<div class="file-view {{if .IsMarkup}}markdown{{else if .IsTextFile}}code-view{{end}} has-emoji">
+			{{if .IsMarkup}}
 				{{if .FileContent}}{{.FileContent | Str2html}}{{end}}
 			{{else if not .IsTextFile}}
 				<div class="view-raw ui center">
diff --git a/vendor/github.com/chaseadamsio/goorgeous/LICENSE b/vendor/github.com/chaseadamsio/goorgeous/LICENSE
new file mode 100644
index 0000000000..d7a37c6a3b
--- /dev/null
+++ b/vendor/github.com/chaseadamsio/goorgeous/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2017 Chase Adams <realchaseadams@gmail.com>
+
+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/chaseadamsio/goorgeous/README.org b/vendor/github.com/chaseadamsio/goorgeous/README.org
new file mode 100644
index 0000000000..37e0f2ec73
--- /dev/null
+++ b/vendor/github.com/chaseadamsio/goorgeous/README.org
@@ -0,0 +1,66 @@
+#+TITLE: chaseadamsio/goorgeous
+
+[[https://travis-ci.org/chaseadamsio/goorgeous.svg?branch=master]]
+[[https://coveralls.io/repos/github/chaseadamsio/goorgeous/badge.svg?branch=master]]
+
+/goorgeous is a Go Org to HTML Parser./
+
+[[file:gopher_small.gif]] 
+
+*Pronounced: Go? Org? Yes!*
+
+#+BEGIN_QUOTE
+"Org mode is for keeping notes, maintaining TODO lists, planning projects, and authoring documents with a fast and effective plain-text system."
+
+- [[orgmode.org]]
+#+END_QUOTE
+
+The purpose of this package is to come as close as possible as parsing an =*.org= document into HTML, the same way one might publish [[http://orgmode.org/worg/org-tutorials/org-publish-html-tutorial.html][with org-publish-html from Emacs]]. 
+
+* Installation
+
+#+BEGIN_SRC sh
+  go get -u github.com/chaseadamsio/goorgeous
+#+END_SRC
+
+* Usage
+
+** Org Headers
+
+To retrieve the headers from a =[]byte=, call =OrgHeaders= and it will return a =map[string]interface{}=: 
+
+#+BEGIN_SRC go
+  input := "#+title: goorgeous\n* Some Headline\n"
+  out := goorgeous.OrgHeaders(input) 
+#+END_SRC
+
+#+BEGIN_SRC go
+  map[string]interface{}{ 
+          "title": "goorgeous"
+  }
+#+END_SRC
+
+** Org Content
+
+After importing =github.com/chaseadamsio/goorgeous=, you can call =Org= with a =[]byte= and it will return an =html= version of the content as a =[]byte=
+
+#+BEGIN_SRC go
+  input := "#+TITLE: goorgeous\n* Some Headline\n"
+  out := goorgeous.Org(input) 
+#+END_SRC
+
+=out= will be:
+
+#+BEGIN_SRC html
+  <h1>Some Headline</h1>/n
+#+END_SRC
+
+* Why? 
+
+First off, I've become an unapologetic user of Emacs & ever since finding =org-mode= I use it for anything having to do with writing content, organizing my life and keeping documentation of my days/weeks/months.
+
+Although I like Emacs & =emacs-lisp=, I publish all of my html sites with [[https://gohugo.io][Hugo Static Site Generator]] and wanted to be able to write my content in =org-mode= in Emacs rather than markdown.
+
+Hugo's implementation of templating and speed are unmatched, so the only way I knew for sure I could continue to use Hugo and write in =org-mode= seamlessly was to write a golang parser for org content and submit a PR for Hugo to use it.
+* Acknowledgements
+I leaned heavily on russross' [[https://github.com/russross/blackfriday][blackfriday markdown renderer]] as both an example of how to write a parser (with some updates to leverage the go we know today) and reusing the blackfriday HTML Renderer so I didn't have to write my own!
diff --git a/vendor/github.com/chaseadamsio/goorgeous/goorgeous.go b/vendor/github.com/chaseadamsio/goorgeous/goorgeous.go
new file mode 100644
index 0000000000..f1b2671d65
--- /dev/null
+++ b/vendor/github.com/chaseadamsio/goorgeous/goorgeous.go
@@ -0,0 +1,803 @@
+package goorgeous
+
+import (
+	"bufio"
+	"bytes"
+	"regexp"
+
+	"github.com/russross/blackfriday"
+	"github.com/shurcooL/sanitized_anchor_name"
+)
+
+type inlineParser func(p *parser, out *bytes.Buffer, data []byte, offset int) int
+
+type footnotes struct {
+	id  string
+	def string
+}
+
+type parser struct {
+	r              blackfriday.Renderer
+	inlineCallback [256]inlineParser
+	notes          []footnotes
+}
+
+// NewParser returns a new parser with the inlineCallbacks required for org content
+func NewParser(renderer blackfriday.Renderer) *parser {
+	p := new(parser)
+	p.r = renderer
+
+	p.inlineCallback['='] = generateVerbatim
+	p.inlineCallback['~'] = generateCode
+	p.inlineCallback['/'] = generateEmphasis
+	p.inlineCallback['_'] = generateUnderline
+	p.inlineCallback['*'] = generateBold
+	p.inlineCallback['+'] = generateStrikethrough
+	p.inlineCallback['['] = generateLinkOrImg
+
+	return p
+}
+
+// OrgCommon is the easiest way to parse a byte slice of org content and makes assumptions
+// that the caller wants to use blackfriday's HTMLRenderer with XHTML
+func OrgCommon(input []byte) []byte {
+	renderer := blackfriday.HtmlRenderer(blackfriday.HTML_USE_XHTML, "", "")
+	return OrgOptions(input, renderer)
+}
+
+// Org is a convenience name for OrgOptions
+func Org(input []byte, renderer blackfriday.Renderer) []byte {
+	return OrgOptions(input, renderer)
+}
+
+// OrgOptions takes an org content byte slice and a renderer to use
+func OrgOptions(input []byte, renderer blackfriday.Renderer) []byte {
+	// in the case that we need to render something in isEmpty but there isn't a new line char
+	input = append(input, '\n')
+	var output bytes.Buffer
+
+	p := NewParser(renderer)
+
+	scanner := bufio.NewScanner(bytes.NewReader(input))
+	// used to capture code blocks
+	marker := ""
+	syntax := ""
+	listType := ""
+	inParagraph := false
+	inList := false
+	inTable := false
+	inFixedWidthArea := false
+	var tmpBlock bytes.Buffer
+
+	for scanner.Scan() {
+		data := scanner.Bytes()
+
+		if !isEmpty(data) && isComment(data) || IsKeyword(data) {
+			switch {
+			case inList:
+				if tmpBlock.Len() > 0 {
+					p.generateList(&output, tmpBlock.Bytes(), listType)
+				}
+				inList = false
+				listType = ""
+				tmpBlock.Reset()
+			case inTable:
+				if tmpBlock.Len() > 0 {
+					p.generateTable(&output, tmpBlock.Bytes())
+				}
+				inTable = false
+				tmpBlock.Reset()
+			case inParagraph:
+				if tmpBlock.Len() > 0 {
+					p.generateParagraph(&output, tmpBlock.Bytes()[:len(tmpBlock.Bytes())-1])
+				}
+				inParagraph = false
+				tmpBlock.Reset()
+			case inFixedWidthArea:
+				if tmpBlock.Len() > 0 {
+					tmpBlock.WriteString("</pre>\n")
+					output.Write(tmpBlock.Bytes())
+				}
+				inFixedWidthArea = false
+				tmpBlock.Reset()
+			}
+
+		}
+
+		switch {
+		case isEmpty(data):
+			switch {
+			case inList:
+				if tmpBlock.Len() > 0 {
+					p.generateList(&output, tmpBlock.Bytes(), listType)
+				}
+				inList = false
+				listType = ""
+				tmpBlock.Reset()
+			case inTable:
+				if tmpBlock.Len() > 0 {
+					p.generateTable(&output, tmpBlock.Bytes())
+				}
+				inTable = false
+				tmpBlock.Reset()
+			case inParagraph:
+				if tmpBlock.Len() > 0 {
+					p.generateParagraph(&output, tmpBlock.Bytes()[:len(tmpBlock.Bytes())-1])
+				}
+				inParagraph = false
+				tmpBlock.Reset()
+			case inFixedWidthArea:
+				if tmpBlock.Len() > 0 {
+					tmpBlock.WriteString("</pre>\n")
+					output.Write(tmpBlock.Bytes())
+				}
+				inFixedWidthArea = false
+				tmpBlock.Reset()
+			case marker != "":
+				tmpBlock.WriteByte('\n')
+			default:
+				continue
+			}
+		case isPropertyDrawer(data) || marker == "PROPERTIES":
+			if marker == "" {
+				marker = "PROPERTIES"
+			}
+			if bytes.Equal(data, []byte(":END:")) {
+				marker = ""
+			}
+			continue
+		case isBlock(data) || marker != "":
+			matches := reBlock.FindSubmatch(data)
+			if len(matches) > 0 {
+				if string(matches[1]) == "END" {
+					switch marker {
+					case "QUOTE":
+						var tmpBuf bytes.Buffer
+						p.inline(&tmpBuf, tmpBlock.Bytes())
+						p.r.BlockQuote(&output, tmpBuf.Bytes())
+					case "CENTER":
+						var tmpBuf bytes.Buffer
+						output.WriteString("<center>\n")
+						p.inline(&tmpBuf, tmpBlock.Bytes())
+						output.Write(tmpBuf.Bytes())
+						output.WriteString("</center>\n")
+					default:
+						tmpBlock.WriteByte('\n')
+						p.r.BlockCode(&output, tmpBlock.Bytes(), syntax)
+					}
+					marker = ""
+					tmpBlock.Reset()
+					continue
+				}
+
+			}
+			if marker != "" {
+				if marker != "SRC" && marker != "EXAMPLE" {
+					var tmpBuf bytes.Buffer
+					tmpBuf.Write([]byte("<p>\n"))
+					p.inline(&tmpBuf, data)
+					tmpBuf.WriteByte('\n')
+					tmpBuf.Write([]byte("</p>\n"))
+					tmpBlock.Write(tmpBuf.Bytes())
+
+				} else {
+					tmpBlock.WriteByte('\n')
+					tmpBlock.Write(data)
+				}
+
+			} else {
+				marker = string(matches[2])
+				syntax = string(matches[3])
+			}
+		case isFootnoteDef(data):
+			matches := reFootnoteDef.FindSubmatch(data)
+			for i := range p.notes {
+				if p.notes[i].id == string(matches[1]) {
+					p.notes[i].def = string(matches[2])
+				}
+			}
+		case isTable(data):
+			if inTable != true {
+				inTable = true
+			}
+			tmpBlock.Write(data)
+			tmpBlock.WriteByte('\n')
+		case IsKeyword(data):
+			continue
+		case isComment(data):
+			p.generateComment(&output, data)
+		case isHeadline(data):
+			p.generateHeadline(&output, data)
+		case isDefinitionList(data):
+			if inList != true {
+				listType = "dl"
+				inList = true
+			}
+			var work bytes.Buffer
+			flags := blackfriday.LIST_TYPE_DEFINITION
+			matches := reDefinitionList.FindSubmatch(data)
+			flags |= blackfriday.LIST_TYPE_TERM
+			p.inline(&work, matches[1])
+			p.r.ListItem(&tmpBlock, work.Bytes(), flags)
+			work.Reset()
+			flags &= ^blackfriday.LIST_TYPE_TERM
+			p.inline(&work, matches[2])
+			p.r.ListItem(&tmpBlock, work.Bytes(), flags)
+		case isUnorderedList(data):
+			if inList != true {
+				listType = "ul"
+				inList = true
+			}
+			matches := reUnorderedList.FindSubmatch(data)
+			var work bytes.Buffer
+			p.inline(&work, matches[2])
+			p.r.ListItem(&tmpBlock, work.Bytes(), 0)
+		case isOrderedList(data):
+			if inList != true {
+				listType = "ol"
+				inList = true
+			}
+			matches := reOrderedList.FindSubmatch(data)
+			var work bytes.Buffer
+			tmpBlock.WriteString("<li")
+			if len(matches[2]) > 0 {
+				tmpBlock.WriteString(" value=\"")
+				tmpBlock.Write(matches[2])
+				tmpBlock.WriteString("\"")
+				matches[3] = matches[3][1:]
+			}
+			p.inline(&work, matches[3])
+			tmpBlock.WriteString(">")
+			tmpBlock.Write(work.Bytes())
+			tmpBlock.WriteString("</li>\n")
+		case isHorizontalRule(data):
+			p.r.HRule(&output)
+		case isExampleLine(data):
+			if inParagraph == true {
+				if len(tmpBlock.Bytes()) > 0 {
+					p.generateParagraph(&output, tmpBlock.Bytes()[:len(tmpBlock.Bytes())-1])
+					inParagraph = false
+				}
+				tmpBlock.Reset()
+			}
+			if inFixedWidthArea != true {
+				tmpBlock.WriteString("<pre class=\"example\">\n")
+				inFixedWidthArea = true
+			}
+			matches := reExampleLine.FindSubmatch(data)
+			tmpBlock.Write(matches[1])
+			tmpBlock.WriteString("\n")
+			break
+		default:
+			if inParagraph == false {
+				inParagraph = true
+				if inFixedWidthArea == true {
+					if tmpBlock.Len() > 0 {
+						tmpBlock.WriteString("</pre>")
+						output.Write(tmpBlock.Bytes())
+					}
+					inFixedWidthArea = false
+					tmpBlock.Reset()
+				}
+			}
+			tmpBlock.Write(data)
+			tmpBlock.WriteByte('\n')
+		}
+	}
+
+	if len(tmpBlock.Bytes()) > 0 {
+		if inParagraph == true {
+			p.generateParagraph(&output, tmpBlock.Bytes()[:len(tmpBlock.Bytes())-1])
+		} else if inFixedWidthArea == true {
+			tmpBlock.WriteString("</pre>\n")
+			output.Write(tmpBlock.Bytes())
+		}
+	}
+
+	// Writing footnote def. list
+	if len(p.notes) > 0 {
+		flags := blackfriday.LIST_ITEM_BEGINNING_OF_LIST
+		p.r.Footnotes(&output, func() bool {
+			for i := range p.notes {
+				p.r.FootnoteItem(&output, []byte(p.notes[i].id), []byte(p.notes[i].def), flags)
+			}
+			return true
+		})
+	}
+
+	return output.Bytes()
+}
+
+// Org Syntax has been broken up into 4 distinct sections based on
+// the org-syntax draft (http://orgmode.org/worg/dev/org-syntax.html):
+// - Headlines
+// - Greater Elements
+// - Elements
+// - Objects
+
+// Headlines
+func isHeadline(data []byte) bool {
+	if !charMatches(data[0], '*') {
+		return false
+	}
+	level := 0
+	for level < 6 && charMatches(data[level], '*') {
+		level++
+	}
+	return charMatches(data[level], ' ')
+}
+
+func (p *parser) generateHeadline(out *bytes.Buffer, data []byte) {
+	level := 1
+	status := ""
+	priority := ""
+
+	for level < 6 && data[level] == '*' {
+		level++
+	}
+
+	start := skipChar(data, level, ' ')
+
+	data = data[start:]
+	i := 0
+
+	// Check if has a status so it can be rendered as a separate span that can be hidden or
+	// modified with CSS classes
+	if hasStatus(data[i:4]) {
+		status = string(data[i:4])
+		i += 5 // one extra character for the next whitespace
+	}
+
+	// Check if the next byte is a priority marker
+	if data[i] == '[' && hasPriority(data[i+1]) {
+		priority = string(data[i+1])
+		i += 4 // for "[c]" + ' '
+	}
+
+	tags, tagsFound := findTags(data, i)
+
+	headlineID := sanitized_anchor_name.Create(string(data[i:]))
+
+	generate := func() bool {
+		dataEnd := len(data)
+		if tagsFound > 0 {
+			dataEnd = tagsFound
+		}
+
+		headline := bytes.TrimRight(data[i:dataEnd], " \t")
+
+		if status != "" {
+			out.WriteString("<span class=\"todo " + status + "\">" + status + "</span>")
+			out.WriteByte(' ')
+		}
+
+		if priority != "" {
+			out.WriteString("<span class=\"priority " + priority + "\">[" + priority + "]</span>")
+			out.WriteByte(' ')
+		}
+
+		p.inline(out, headline)
+
+		if tagsFound > 0 {
+			for _, tag := range tags {
+				out.WriteByte(' ')
+				out.WriteString("<span class=\"tags " + tag + "\">" + tag + "</span>")
+				out.WriteByte(' ')
+			}
+		}
+		return true
+	}
+
+	p.r.Header(out, generate, level, headlineID)
+}
+
+func hasStatus(data []byte) bool {
+	return bytes.Contains(data, []byte("TODO")) || bytes.Contains(data, []byte("DONE"))
+}
+
+func hasPriority(char byte) bool {
+	return (charMatches(char, 'A') || charMatches(char, 'B') || charMatches(char, 'C'))
+}
+
+func findTags(data []byte, start int) ([]string, int) {
+	tags := []string{}
+	tagOpener := 0
+	tagMarker := tagOpener
+	for tIdx := start; tIdx < len(data); tIdx++ {
+		if tagMarker > 0 && data[tIdx] == ':' {
+			tags = append(tags, string(data[tagMarker+1:tIdx]))
+			tagMarker = tIdx
+		}
+		if data[tIdx] == ':' && tagOpener == 0 && data[tIdx-1] == ' ' {
+			tagMarker = tIdx
+			tagOpener = tIdx
+		}
+	}
+	return tags, tagOpener
+}
+
+// Greater Elements
+// ~~ Definition Lists
+var reDefinitionList = regexp.MustCompile(`^\s*-\s+(.+?)\s+::\s+(.*)`)
+
+func isDefinitionList(data []byte) bool {
+	return reDefinitionList.Match(data)
+}
+
+// ~~ Example lines
+var reExampleLine = regexp.MustCompile(`^\s*:\s(\s*.*)|^\s*:$`)
+
+func isExampleLine(data []byte) bool {
+	return reExampleLine.Match(data)
+}
+
+// ~~ Ordered Lists
+var reOrderedList = regexp.MustCompile(`^(\s*)\d+\.\s+\[?@?(\d*)\]?(.+)`)
+
+func isOrderedList(data []byte) bool {
+	return reOrderedList.Match(data)
+}
+
+// ~~ Unordered Lists
+var reUnorderedList = regexp.MustCompile(`^(\s*)[-\+]\s+(.+)`)
+
+func isUnorderedList(data []byte) bool {
+	return reUnorderedList.Match(data)
+}
+
+// ~~ Tables
+var reTableHeaders = regexp.MustCompile(`^[|+-]*$`)
+
+func isTable(data []byte) bool {
+	return charMatches(data[0], '|')
+}
+
+func (p *parser) generateTable(output *bytes.Buffer, data []byte) {
+	var table bytes.Buffer
+	rows := bytes.Split(bytes.Trim(data, "\n"), []byte("\n"))
+	hasTableHeaders := len(rows) > 1
+	if len(rows) > 1 {
+		hasTableHeaders = reTableHeaders.Match(rows[1])
+	}
+	tbodySet := false
+
+	for idx, row := range rows {
+		var rowBuff bytes.Buffer
+		if hasTableHeaders && idx == 0 {
+			table.WriteString("<thead>")
+			for _, cell := range bytes.Split(row[1:len(row)-1], []byte("|")) {
+				p.r.TableHeaderCell(&rowBuff, bytes.Trim(cell, " \t"), 0)
+			}
+			p.r.TableRow(&table, rowBuff.Bytes())
+			table.WriteString("</thead>\n")
+		} else if hasTableHeaders && idx == 1 {
+			continue
+		} else {
+			if !tbodySet {
+				table.WriteString("<tbody>")
+				tbodySet = true
+			}
+			if !reTableHeaders.Match(row) {
+				for _, cell := range bytes.Split(row[1:len(row)-1], []byte("|")) {
+					var cellBuff bytes.Buffer
+					p.inline(&cellBuff, bytes.Trim(cell, " \t"))
+					p.r.TableCell(&rowBuff, cellBuff.Bytes(), 0)
+				}
+				p.r.TableRow(&table, rowBuff.Bytes())
+			}
+			if tbodySet && idx == len(rows)-1 {
+				table.WriteString("</tbody>\n")
+				tbodySet = false
+			}
+		}
+	}
+
+	output.WriteString("\n<table>\n")
+	output.Write(table.Bytes())
+	output.WriteString("</table>\n")
+}
+
+// ~~ Property Drawers
+
+func isPropertyDrawer(data []byte) bool {
+	return bytes.Equal(data, []byte(":PROPERTIES:"))
+}
+
+// ~~ Dynamic Blocks
+var reBlock = regexp.MustCompile(`^#\+(BEGIN|END)_(\w+)\s*([0-9A-Za-z_\-]*)?`)
+
+func isBlock(data []byte) bool {
+	return reBlock.Match(data)
+}
+
+// ~~ Footnotes
+var reFootnoteDef = regexp.MustCompile(`^\[fn:([\w]+)\] +(.+)`)
+
+func isFootnoteDef(data []byte) bool {
+	return reFootnoteDef.Match(data)
+}
+
+// Elements
+// ~~ Keywords
+func IsKeyword(data []byte) bool {
+	return len(data) > 2 && charMatches(data[0], '#') && charMatches(data[1], '+') && !charMatches(data[2], ' ')
+}
+
+// ~~ Comments
+func isComment(data []byte) bool {
+	return charMatches(data[0], '#') && charMatches(data[1], ' ')
+}
+
+func (p *parser) generateComment(out *bytes.Buffer, data []byte) {
+	var work bytes.Buffer
+	work.WriteString("<!-- ")
+	work.Write(data[2:])
+	work.WriteString(" -->")
+	work.WriteByte('\n')
+	out.Write(work.Bytes())
+}
+
+// ~~ Horizontal Rules
+var reHorizontalRule = regexp.MustCompile(`^\s*?-----\s?$`)
+
+func isHorizontalRule(data []byte) bool {
+	return reHorizontalRule.Match(data)
+}
+
+// ~~ Paragraphs
+func (p *parser) generateParagraph(out *bytes.Buffer, data []byte) {
+	generate := func() bool {
+		p.inline(out, bytes.Trim(data, " "))
+		return true
+	}
+	p.r.Paragraph(out, generate)
+}
+
+func (p *parser) generateList(output *bytes.Buffer, data []byte, listType string) {
+	generateList := func() bool {
+		output.WriteByte('\n')
+		p.inline(output, bytes.Trim(data, " "))
+		return true
+	}
+	switch listType {
+	case "ul":
+		p.r.List(output, generateList, 0)
+	case "ol":
+		p.r.List(output, generateList, blackfriday.LIST_TYPE_ORDERED)
+	case "dl":
+		p.r.List(output, generateList, blackfriday.LIST_TYPE_DEFINITION)
+	}
+}
+
+// Objects
+
+func (p *parser) inline(out *bytes.Buffer, data []byte) {
+	i, end := 0, 0
+
+	for i < len(data) {
+		for end < len(data) && p.inlineCallback[data[end]] == nil {
+			end++
+		}
+
+		p.r.Entity(out, data[i:end])
+
+		if end >= len(data) {
+			break
+		}
+		i = end
+
+		handler := p.inlineCallback[data[i]]
+
+		if consumed := handler(p, out, data, i); consumed > 0 {
+			i += consumed
+			end = i
+			continue
+		}
+
+		end = i + 1
+	}
+}
+
+func isAcceptablePreOpeningChar(dataIn, data []byte, offset int) bool {
+	if len(dataIn) == len(data) {
+		return true
+	}
+
+	char := dataIn[offset-1]
+	return charMatches(char, ' ') || isPreChar(char)
+}
+
+func isPreChar(char byte) bool {
+	return charMatches(char, '>') || charMatches(char, '(') || charMatches(char, '{') || charMatches(char, '[')
+}
+
+func isAcceptablePostClosingChar(char byte) bool {
+	return charMatches(char, ' ') || isTerminatingChar(char)
+}
+
+func isTerminatingChar(char byte) bool {
+	return charMatches(char, '.') || charMatches(char, ',') || charMatches(char, '?') || charMatches(char, '!') || charMatches(char, ')') || charMatches(char, '}') || charMatches(char, ']')
+}
+
+func findLastCharInInline(data []byte, char byte) int {
+	timesFound := 0
+	last := 0
+	// Start from character after the inline indicator
+	for i := 1; i < len(data); i++ {
+		if timesFound == 1 {
+			break
+		}
+		if data[i] == char {
+			if len(data) == i+1 || (len(data) > i+1 && isAcceptablePostClosingChar(data[i+1])) {
+				last = i
+				timesFound += 1
+			}
+		}
+	}
+	return last
+}
+
+func generator(p *parser, out *bytes.Buffer, dataIn []byte, offset int, char byte, doInline bool, renderer func(*bytes.Buffer, []byte)) int {
+	data := dataIn[offset:]
+	c := byte(char)
+	start := 1
+	i := start
+	if len(data) <= 1 {
+		return 0
+	}
+
+	lastCharInside := findLastCharInInline(data, c)
+
+	// Org mode spec says a non-whitespace character must immediately follow.
+	// if the current char is the marker, then there's no text between, not a candidate
+	if isSpace(data[i]) || lastCharInside == i || !isAcceptablePreOpeningChar(dataIn, data, offset) {
+		return 0
+	}
+
+	if lastCharInside > 0 {
+		var work bytes.Buffer
+		if doInline {
+			p.inline(&work, data[start:lastCharInside])
+			renderer(out, work.Bytes())
+		} else {
+			renderer(out, data[start:lastCharInside])
+		}
+		next := lastCharInside + 1
+		return next
+	}
+
+	return 0
+}
+
+// ~~ Text Markup
+func generateVerbatim(p *parser, out *bytes.Buffer, data []byte, offset int) int {
+	return generator(p, out, data, offset, '=', false, p.r.CodeSpan)
+}
+
+func generateCode(p *parser, out *bytes.Buffer, data []byte, offset int) int {
+	return generator(p, out, data, offset, '~', false, p.r.CodeSpan)
+}
+
+func generateEmphasis(p *parser, out *bytes.Buffer, data []byte, offset int) int {
+	return generator(p, out, data, offset, '/', true, p.r.Emphasis)
+}
+
+func generateUnderline(p *parser, out *bytes.Buffer, data []byte, offset int) int {
+	underline := func(out *bytes.Buffer, text []byte) {
+		out.WriteString("<span style=\"text-decoration: underline;\">")
+		out.Write(text)
+		out.WriteString("</span>")
+	}
+
+	return generator(p, out, data, offset, '_', true, underline)
+}
+
+func generateBold(p *parser, out *bytes.Buffer, data []byte, offset int) int {
+	return generator(p, out, data, offset, '*', true, p.r.DoubleEmphasis)
+}
+
+func generateStrikethrough(p *parser, out *bytes.Buffer, data []byte, offset int) int {
+	return generator(p, out, data, offset, '+', true, p.r.StrikeThrough)
+}
+
+// ~~ Images and Links (inc. Footnote)
+var reLinkOrImg = regexp.MustCompile(`\[\[(.+?)\]\[?(.*?)\]?\]`)
+
+func generateLinkOrImg(p *parser, out *bytes.Buffer, data []byte, offset int) int {
+	data = data[offset+1:]
+	start := 1
+	i := start
+	var hyperlink []byte
+	isImage := false
+	isFootnote := false
+	closedLink := false
+	hasContent := false
+
+	if bytes.Equal(data[0:3], []byte("fn:")) {
+		isFootnote = true
+	} else if data[0] != '[' {
+		return 0
+	}
+
+	if bytes.Equal(data[1:6], []byte("file:")) {
+		isImage = true
+	}
+
+	for i < len(data) {
+		currChar := data[i]
+		switch {
+		case charMatches(currChar, ']') && closedLink == false:
+			if isImage {
+				hyperlink = data[start+5 : i]
+			} else if isFootnote {
+				refid := data[start+2 : i]
+				if bytes.Equal(refid, bytes.Trim(refid, " ")) {
+					p.notes = append(p.notes, footnotes{string(refid), "DEFINITION NOT FOUND"})
+					p.r.FootnoteRef(out, refid, len(p.notes))
+					return i + 2
+				} else {
+					return 0
+				}
+			} else if bytes.Equal(data[i-4:i], []byte(".org")) {
+				orgStart := start
+				if bytes.Equal(data[orgStart:orgStart+2], []byte("./")) {
+					orgStart = orgStart + 1
+				}
+				hyperlink = data[orgStart : i-4]
+			} else {
+				hyperlink = data[start:i]
+			}
+			closedLink = true
+		case charMatches(currChar, '['):
+			start = i + 1
+			hasContent = true
+		case charMatches(currChar, ']') && closedLink == true && hasContent == true && isImage == true:
+			p.r.Image(out, hyperlink, data[start:i], data[start:i])
+			return i + 3
+		case charMatches(currChar, ']') && closedLink == true && hasContent == true:
+			var tmpBuf bytes.Buffer
+			p.inline(&tmpBuf, data[start:i])
+			p.r.Link(out, hyperlink, tmpBuf.Bytes(), tmpBuf.Bytes())
+			return i + 3
+		case charMatches(currChar, ']') && closedLink == true && hasContent == false && isImage == true:
+			p.r.Image(out, hyperlink, hyperlink, hyperlink)
+			return i + 2
+		case charMatches(currChar, ']') && closedLink == true && hasContent == false:
+			p.r.Link(out, hyperlink, hyperlink, hyperlink)
+			return i + 2
+		}
+		i++
+	}
+
+	return 0
+}
+
+// Helpers
+func skipChar(data []byte, start int, char byte) int {
+	i := start
+	for i < len(data) && charMatches(data[i], char) {
+		i++
+	}
+	return i
+}
+
+func isSpace(char byte) bool {
+	return charMatches(char, ' ')
+}
+
+func isEmpty(data []byte) bool {
+	if len(data) == 0 {
+		return true
+	}
+
+	for i := 0; i < len(data) && !charMatches(data[i], '\n'); i++ {
+		if !charMatches(data[i], ' ') && !charMatches(data[i], '\t') {
+			return false
+		}
+	}
+	return true
+}
+
+func charMatches(a byte, b byte) bool {
+	return a == b
+}
diff --git a/vendor/github.com/chaseadamsio/goorgeous/gopher.gif b/vendor/github.com/chaseadamsio/goorgeous/gopher.gif
new file mode 100644
index 0000000000000000000000000000000000000000..be7567e3cfd666ee40c56b1d808f97116c092053
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literal 0
HcmV?d00001

diff --git a/vendor/github.com/chaseadamsio/goorgeous/header.go b/vendor/github.com/chaseadamsio/goorgeous/header.go
new file mode 100644
index 0000000000..66e8b99321
--- /dev/null
+++ b/vendor/github.com/chaseadamsio/goorgeous/header.go
@@ -0,0 +1,70 @@
+package goorgeous
+
+import (
+	"bufio"
+	"bytes"
+	"regexp"
+	"strings"
+)
+
+// ExtractOrgHeaders finds and returns all of the headers
+// from a bufio.Reader and returns them as their own byte slice
+func ExtractOrgHeaders(r *bufio.Reader) (fm []byte, err error) {
+	var out bytes.Buffer
+	endOfHeaders := true
+	for endOfHeaders {
+		p, err := r.Peek(2)
+		if err != nil {
+			return nil, err
+		}
+		if !charMatches(p[0], '#') && !charMatches(p[1], '+') {
+			endOfHeaders = false
+			break
+		}
+		line, _, err := r.ReadLine()
+		if err != nil {
+			return nil, err
+		}
+		out.Write(line)
+		out.WriteByte('\n')
+	}
+	return out.Bytes(), nil
+}
+
+var reHeader = regexp.MustCompile(`^#\+(\w+?): (.*)`)
+
+// OrgHeaders find all of the headers from a byte slice and returns
+// them as a map of string interface
+func OrgHeaders(input []byte) (map[string]interface{}, error) {
+	out := make(map[string]interface{})
+	scanner := bufio.NewScanner(bytes.NewReader(input))
+
+	for scanner.Scan() {
+		data := scanner.Bytes()
+		if !charMatches(data[0], '#') && !charMatches(data[1], '+') {
+			return out, nil
+		}
+		matches := reHeader.FindSubmatch(data)
+
+		if len(matches) < 3 {
+			continue
+		}
+
+		key := string(matches[1])
+		val := matches[2]
+		switch {
+		case strings.ToLower(key) == "tags" || strings.ToLower(key) == "categories" || strings.ToLower(key) == "aliases":
+			bTags := bytes.Split(val, []byte(" "))
+			tags := make([]string, len(bTags))
+			for idx, tag := range bTags {
+				tags[idx] = string(tag)
+			}
+			out[key] = tags
+		default:
+			out[key] = string(val)
+		}
+
+	}
+	return out, nil
+
+}
diff --git a/vendor/vendor.json b/vendor/vendor.json
index d9cb18cd1a..101c72c217 100644
--- a/vendor/vendor.json
+++ b/vendor/vendor.json
@@ -299,6 +299,12 @@
 			"revision": "fb1f79c6b65acda83063cbc69f6bba1522558bfc",
 			"revisionTime": "2016-01-17T19:21:50Z"
 		},
+		{
+			"checksumSHA1": "x1svIugw39oEZGU5/HMUHzgRUZM=",
+			"path": "github.com/chaseadamsio/goorgeous",
+			"revision": "098da33fde5f9220736531b3cb26a2dec86a8367",
+			"revisionTime": "2017-09-01T13:22:37Z"
+		},
 		{
 			"checksumSHA1": "agNqSytP0indDCoGizlMyC1L/m4=",
 			"path": "github.com/coreos/etcd/error",