From eaca75c5cb7dd2878c9fdb88585e3949380a0b2b Mon Sep 17 00:00:00 2001
From: Mikito Takada <mikito.takada@gmail.com>
Date: Thu, 29 Oct 2015 20:25:00 -0700
Subject: [PATCH] Add linkification for local links that point to .md files

---
 lib/convert-md.js        | 42 +++++++++++++++++++++++++++++++++++++++-
 readme.md                |  4 +++-
 test/integration.test.js | 32 ++++++++++++++++++++++++++++++
 todo.md                  | 33 ++++++++++++++++++++++++++++++-
 4 files changed, 108 insertions(+), 3 deletions(-)

diff --git a/lib/convert-md.js b/lib/convert-md.js
index 4177b26..9e9182c 100644
--- a/lib/convert-md.js
+++ b/lib/convert-md.js
@@ -1,4 +1,6 @@
-var pi = require('pipe-iterators'),
+var url = require('url'),
+    path = require('path'),
+    pi = require('pipe-iterators'),
     md = require('markdown-stream-utils');
 
 // A wrapper around md.convertMd that includes the custom heading generation and id
@@ -37,6 +39,44 @@ module.exports = function(argv) {
       '>\n';
   };
 
+  renderer.link = function(href, title, text) {
+    if (this.options.sanitize) {
+      try {
+       var prot = decodeURIComponent(unescape(href))
+          .replace(/[^\w:]/g, '')
+          .toLowerCase();
+      } catch (e) {
+        return '';
+      }
+      if (prot.indexOf('javascript:') === 0 || prot.indexOf('vbscript:') === 0) {
+        return '';
+      }
+    }
+    var parsed = url.parse(href);
+    // convert [.md] in local links (e.g. links with no protocol)
+    if (!parsed.protocol) {
+      var ext = path.extname(parsed.pathname);
+      if (ext === '.markdown' ||
+          ext === '.mdown' ||
+          ext === '.mkd' ||
+          ext === '.mkdn' ||
+          ext === '.md') {
+        var dirname = path.dirname(parsed.pathname);
+        parsed.pathname = dirname +
+              (dirname.charAt(dirname.length - 1) === '/' ? '' : '/') +
+              path.basename(parsed.pathname, ext) + '.html';
+        href = url.format(parsed);
+      }
+    }
+
+    var out = '<a href="' + href + '"';
+    if (title) {
+      out += ' title="' + title + '"';
+    }
+    out += '>' + text + '</a>';
+    return out;
+  };
+
   // reset the header counts for each file, so that idCount is not shared across the whole render
   return pi.pipeline([
     pi.forEach(function() {
diff --git a/readme.md b/readme.md
index 41c5740..e27d1f9 100644
--- a/readme.md
+++ b/readme.md
@@ -6,7 +6,9 @@ Looking for something to generate a blog from Markdown files? Check out [ghost-r
 
 ## Features
 
-- `v3.1.2` adds default classes that allow you to [style headings in the table of contents](#table-of-contents). See [the changelog](./changelog.md) for changes made in older versions.
+- `v3.1.4` adds linkification for relative links to markdown files, e.g. `[link](./foo.md)` -> `<a href="./foo.html">link</a>`.
+- `v3.1.3` added a few additional properties to the programmatic API.
+- `v3.1.2` added default classes that allow you to [style headings in the table of contents](#table-of-contents). See [the changelog](./changelog.md) for changes made in older versions.
 - Includes 15+ ready-made CSS stylesheets for Markdown, see the bottom of the readme for screenshots.
 - Reuse the stylesheets or use the `generate-md` tool to convert a folder of Markdown files to HTML using one of the built-in layouts or a custom layout.
 - Completely static output is easy to host anywhere.
diff --git a/test/integration.test.js b/test/integration.test.js
index 4513b11..c375174 100644
--- a/test/integration.test.js
+++ b/test/integration.test.js
@@ -312,5 +312,37 @@ describe('integration tests', function() {
         done();
       });
     });
+
+    it('replaces .md in local links but not in remote links ', function(done) {
+      render({
+        contents: [
+          'title: Hello world',
+          'author: Anonymous',
+          '----',
+          '# Test',
+          '[foo](./foo.md)',
+          '[bar](bar.md)',
+          '[baz](/baz.md)',
+          '[multi](./multi.md.md)',
+          '[http](http://foo.md)',
+          '[https](https://foo.md)',
+          '[ftp](ftp://foo.md)',
+          '[javascript](javascript://foo.md)',
+        ].join('\n')
+       }, { template: '{{> content}}' }, function(html) {
+        assert.equal(html, [
+            '<h1 id="test"><a class="header-link" href="#test"></a>Test</h1>',
+            '<p><a href="./foo.html">foo</a>',
+            '<a href="./bar.html">bar</a>',
+            '<a href="/baz.html">baz</a>',
+            '<a href="./multi.md.html">multi</a>',
+            '<a href="http://foo.md">http</a>',
+            '<a href="https://foo.md">https</a>',
+            '<a href="ftp://foo.md">ftp</a>',
+            '<a href="javascript://foo.md">javascript</a></p>\n',
+          ].join('\n'));
+        done();
+      });
+    });
   });
 });
diff --git a/todo.md b/todo.md
index 96f22f3..5ae12c9 100644
--- a/todo.md
+++ b/todo.md
@@ -9,9 +9,40 @@
 - ship integration: https://github.com/carrot/ship
 - emoji support
 - static asset revisioning via https://www.npmjs.com/package/rev-hash, https://github.com/galkinrost/gulp-rev-css-url
+- better theming:
+  - grid system: bootstrap (grid only)
+  - typography:
+    - heading font
+    - body font
+    - code font
+  - color palette
+    - material design shades, e.g. https://www.materialpalette.com/pink/indigo
+    - background color
+    - text color
+      - heading text
+      - body text
+      - link color
+      - emphasis
+        - styles for bold text
+        - styles for italic text
+  - components
+    - CSS
+      - headings
+      - paragraphs
+      - blockquotes
+      - ordered lists
+      - unordered lists
+      - nested lists
+      - inline code blocks
+      - code blocks
+      - images
+      - tables
+      - horizontal rule
+    - nav bar
+    - menu
+    - headings (hover link)
 - express plugin e.g. equivalent to express.static()
 - docco style
-- linkify .md links
 - themes
   - https://github.com/nrbernard/droplr-markdown-css
   - https://github.com/chrisopedia/base16-marked