mirror of
https://github.com/discourse/discourse.git
synced 2024-12-12 03:13:41 +08:00
575bc4af73
We were having a minor issue with emails with embedded images that had newlines in the alt string; for example: ``` <p class="MsoNormal"><span style="font-size:11.0pt"><img width="898" height="498" style="width:9.3541in;height:5.1875in" id="Picture_x0020_5" src="cid:image003.png@01DA4EBA.0400B610" alt="A screenshot of a computer program Description automatically generated"></span><span style="font-size:11.0pt"><o:p></o:p></span></p> ``` Once this was parsed and converted to markdown (or directly to HTML in some cases), this caused an issue in the composer and the post UI, where the markdown parser didn't know how to deal with this, making the HTML show directly instead of showing an image. The easiest way to deal with this is to just strip \n from image alt and title attrs in the HTMLToMarkdown class.
530 lines
17 KiB
Ruby
530 lines
17 KiB
Ruby
# frozen_string_literal: true
|
|
|
|
require "html_to_markdown"
|
|
|
|
RSpec.describe HtmlToMarkdown do
|
|
def html_to_markdown(html, opts = {})
|
|
HtmlToMarkdown.new(html, opts).to_markdown
|
|
end
|
|
|
|
it "remove whitespaces" do
|
|
html = <<-HTML
|
|
<div dir="auto">Hello,
|
|
<div dir="auto"><br></div>
|
|
<div dir="auto"> This is the 1st paragraph. </div>
|
|
<div dir="auto"><br></div>
|
|
<div dir="auto">
|
|
This is another paragraph
|
|
</div>
|
|
</div>
|
|
HTML
|
|
|
|
expect(html_to_markdown(html)).to eq(
|
|
"Hello,\n\nThis is the 1st paragraph.\n\nThis is another paragraph",
|
|
)
|
|
|
|
html = <<~HTML
|
|
<body text="#000000" bgcolor="#FFFFFF">
|
|
<p>Let me see if it happens by answering your message through
|
|
Thunderbird.</p>
|
|
<p>Long sentence 1 Long sentence 1 Long sentence 1 Long sentence 1
|
|
Long sentence 1 Long sentence 1 Long sentence 1 Long sentence 1
|
|
Long sentence 1 Long sentence 1 Long sentence 1 Long sentence 1
|
|
Long sentence 1 Long sentence 1 Long sentence 1 Long sentence 1
|
|
Long sentence 1 Long sentence 1 Long sentence 1 Long sentence 1
|
|
Long sentence 1
|
|
</p>
|
|
</body>
|
|
HTML
|
|
|
|
markdown = <<~MD
|
|
Let me see if it happens by answering your message through Thunderbird.
|
|
|
|
Long sentence 1 Long sentence 1 Long sentence 1 Long sentence 1 Long sentence 1 Long sentence 1 Long sentence 1 Long sentence 1 Long sentence 1 Long sentence 1 Long sentence 1 Long sentence 1 Long sentence 1 Long sentence 1 Long sentence 1 Long sentence 1 Long sentence 1 Long sentence 1 Long sentence 1 Long sentence 1 Long sentence 1
|
|
MD
|
|
|
|
expect(html_to_markdown(html)).to eq(markdown.strip)
|
|
|
|
html = <<~HTML
|
|
<p> This post
|
|
has lots<br> of
|
|
space
|
|
</p>
|
|
<pre> This space was left untouched !</pre>
|
|
HTML
|
|
|
|
markdown = <<~MD
|
|
This post has lots
|
|
of space
|
|
|
|
```
|
|
This space was left untouched !
|
|
```
|
|
MD
|
|
|
|
expect(html_to_markdown(html)).to eq(markdown.strip)
|
|
end
|
|
|
|
it "doesn't error on non-inline elements like (aside, section)" do
|
|
html = <<~HTML
|
|
<aside class="quote no-group">
|
|
<blockquote>
|
|
<p>Hello,<br>is it me you're looking for?</p>
|
|
</blockquote>
|
|
<br>
|
|
</aside>
|
|
HTML
|
|
|
|
markdown = <<~MD
|
|
> Hello,
|
|
> is it me you're looking for?
|
|
MD
|
|
|
|
expect(html_to_markdown(html)).to eq(markdown.strip)
|
|
end
|
|
|
|
it "skips hidden tags" do
|
|
expect(html_to_markdown("<p>Hello <span hidden>cruel </span>World!</p>")).to eq("Hello World!")
|
|
end
|
|
|
|
it "converts <strong>" do
|
|
expect(html_to_markdown("<strong>Strong</strong>")).to eq("**Strong**")
|
|
expect(html_to_markdown("<strong>Str*ng</strong>")).to eq("__Str*ng__")
|
|
end
|
|
|
|
it "converts <b>" do
|
|
expect(html_to_markdown("<b>Bold</b>")).to eq("**Bold**")
|
|
expect(html_to_markdown("<b>B*ld</b>")).to eq("__B*ld__")
|
|
|
|
html = <<~HTML
|
|
Before
|
|
<p><b>Bold
|
|
<br>
|
|
<br>
|
|
</b>
|
|
</p>
|
|
After
|
|
HTML
|
|
expect(html_to_markdown(html)).to eq("Before\n\n**Bold**\n\nAfter")
|
|
end
|
|
|
|
it "converts <em>" do
|
|
expect(html_to_markdown("<em>Emphasis</em>")).to eq("*Emphasis*")
|
|
expect(html_to_markdown("<em>Emph*sis</em>")).to eq("_Emph*sis_")
|
|
end
|
|
|
|
it "converts <i>" do
|
|
expect(html_to_markdown("<i>Italic</i>")).to eq("*Italic*")
|
|
expect(html_to_markdown("<i>It*lic</i>")).to eq("_It*lic_")
|
|
end
|
|
|
|
it "converts <a>" do
|
|
expect(html_to_markdown(%Q{<a href="https://www.discourse.org">Discourse</a>})).to eq(
|
|
"[Discourse](https://www.discourse.org)",
|
|
)
|
|
end
|
|
|
|
it "supports SiteSetting.allowed_href_schemes" do
|
|
SiteSetting.allowed_href_schemes = "tel|steam"
|
|
expect(html_to_markdown(%Q{<a href="steam://store/48000">LIMBO</a>})).to eq(
|
|
"[LIMBO](steam://store/48000)",
|
|
)
|
|
end
|
|
|
|
it "removes empty & invalid <a>" do
|
|
expect(html_to_markdown("<a>Discourse</a>")).to eq("Discourse")
|
|
expect(html_to_markdown(%Q{<a href="">Discourse</a>})).to eq("Discourse")
|
|
expect(html_to_markdown(%Q{<a href="foo.bar">Discourse</a>})).to eq("Discourse")
|
|
end
|
|
|
|
HTML_WITH_IMG ||= %Q{<img src="https://www.discourse.org/logo.svg" alt="Discourse Logo">}
|
|
HTML_WITH_CID_IMG ||= %Q{<img src="cid:ii_1525434659ddb4cb" title="Discourse Logo">}
|
|
|
|
it "converts <img>" do
|
|
expect(html_to_markdown(HTML_WITH_IMG)).to eq(
|
|
"",
|
|
)
|
|
end
|
|
|
|
it "keeps <img> with 'keep_img_tags'" do
|
|
expect(html_to_markdown(HTML_WITH_IMG, keep_img_tags: true)).to eq(HTML_WITH_IMG)
|
|
end
|
|
|
|
it "removes newlines from img alt text" do
|
|
html_with_alt_newlines =
|
|
%Q{<img src="https://www.discourse.org/logo.svg" alt="Discourse\n\nLogo">}
|
|
expect(html_to_markdown(html_with_alt_newlines)).to eq(
|
|
"",
|
|
)
|
|
end
|
|
|
|
it "removes empty & invalid <img>" do
|
|
expect(html_to_markdown("<img>")).to eq("")
|
|
expect(html_to_markdown(%Q{<img src="">})).to eq("")
|
|
expect(html_to_markdown(%Q{<img src="foo.bar">})).to eq("")
|
|
end
|
|
|
|
it "keeps <img> with src='cid:' with 'keep_cid_imgs'" do
|
|
expect(html_to_markdown(HTML_WITH_CID_IMG, keep_cid_imgs: true)).to eq(HTML_WITH_CID_IMG)
|
|
end
|
|
|
|
it "removes newlines from img alt text with cid images" do
|
|
html_with_cid_alt_newlines = %Q{<img src="cid:ii_1525434659ddb4cb" title="Discourse\n\nLogo">}
|
|
expect(html_to_markdown(html_with_cid_alt_newlines, keep_cid_imgs: true)).to eq(
|
|
%Q{<img src="cid:ii_1525434659ddb4cb" title="Discourse Logo">},
|
|
)
|
|
end
|
|
|
|
it "skips hidden <img>" do
|
|
expect(html_to_markdown(%Q{<img src="https://www.discourse.org/logo.svg" width=0>})).to eq("")
|
|
expect(html_to_markdown(%Q{<img src="https://www.discourse.org/logo.svg" height="0">})).to eq(
|
|
"",
|
|
)
|
|
end
|
|
|
|
it "supports width/height on <img>" do
|
|
expect(html_to_markdown(%Q{<img src="https://www.discourse.org/logo.svg" height=100>})).to eq(
|
|
"",
|
|
)
|
|
expect(html_to_markdown(%Q{<img src="https://www.discourse.org/logo.svg" width=200>})).to eq(
|
|
"",
|
|
)
|
|
expect(
|
|
html_to_markdown(%Q{<img src="https://www.discourse.org/logo.svg" height=100 width=200>}),
|
|
).to eq("")
|
|
end
|
|
|
|
(1..6).each do |n|
|
|
it "converts <h#{n}>" do
|
|
expect(html_to_markdown("<h#{n}>Header #{n}</h#{n}>")).to eq("#" * n + " Header #{n}")
|
|
end
|
|
end
|
|
|
|
it "converts <br>" do
|
|
expect(html_to_markdown("Before<br>Inside<br>After")).to eq("Before\nInside\nAfter")
|
|
end
|
|
|
|
it "skips <br> inside <p> if next character is \n" do
|
|
expect(html_to_markdown("<p>Before<br>\nInside<br>After</p>")).to eq("Before\nInside\nAfter")
|
|
end
|
|
|
|
it "converts <hr>" do
|
|
expect(html_to_markdown("Before<hr>Inside<hr>After")).to eq(
|
|
"Before\n\n---\n\nInside\n\n---\n\nAfter",
|
|
)
|
|
end
|
|
|
|
it "converts <tt>" do
|
|
expect(html_to_markdown("<tt>Teletype</tt>")).to eq("`Teletype`")
|
|
end
|
|
|
|
it "converts <code>" do
|
|
expect(html_to_markdown("<code>Code</code>")).to eq("`Code`")
|
|
end
|
|
|
|
it "supports <ins>" do
|
|
expect(html_to_markdown("This is an <ins>insertion</ins>")).to eq(
|
|
"This is an <ins>insertion</ins>",
|
|
)
|
|
end
|
|
|
|
it "supports <del>" do
|
|
expect(html_to_markdown("This is a <del>deletion</del>")).to eq("This is a <del>deletion</del>")
|
|
end
|
|
|
|
it "supports <sub>" do
|
|
expect(html_to_markdown("H<sub>2</sub>O")).to eq("H<sub>2</sub>O")
|
|
end
|
|
|
|
it "supports <mark>" do
|
|
expect(html_to_markdown("<mark>This is highlighted!</mark>")).to eq(
|
|
"<mark>This is highlighted!</mark>",
|
|
)
|
|
end
|
|
|
|
it "supports <sup>" do
|
|
expect(html_to_markdown("<sup>Super Script!</sup>")).to eq("<sup>Super Script!</sup>")
|
|
end
|
|
|
|
it "supports <small>" do
|
|
expect(html_to_markdown("<small>Small</small>")).to eq("<small>Small</small>")
|
|
end
|
|
|
|
it "supports <kbd>" do
|
|
expect(html_to_markdown("<kbd>CTRL</kbd>+<kbd>C</kbd>")).to eq("<kbd>CTRL</kbd>+<kbd>C</kbd>")
|
|
end
|
|
|
|
it "supports <abbr>" do
|
|
expect(
|
|
html_to_markdown(%Q{<abbr title="Civilized Discourse Construction Kit, Inc.">CDCK</abbr>}),
|
|
).to eq(%Q{<abbr title="Civilized Discourse Construction Kit, Inc.">CDCK</abbr>})
|
|
end
|
|
|
|
it "supports <s>" do
|
|
expect(html_to_markdown("<s>Strike Through</s>")).to eq("~~Strike Through~~")
|
|
end
|
|
|
|
it "supports <strike>" do
|
|
expect(html_to_markdown("<strike>Strike Through</strike>")).to eq("~~Strike Through~~")
|
|
end
|
|
|
|
it "supports <blockquote>" do
|
|
expect(html_to_markdown("<blockquote>Quote</blockquote>")).to eq("> Quote")
|
|
end
|
|
|
|
it "supports <ul>" do
|
|
expect(html_to_markdown("<ul><li>🍏</li><li>🍐</li><li>🍌</li></ul>")).to eq("- 🍏\n- 🍐\n- 🍌")
|
|
expect(html_to_markdown("<ul>\n<li>🍏</li>\n<li>🍐</li>\n<li>🍌</li>\n</ul>")).to eq(
|
|
"- 🍏\n- 🍐\n- 🍌",
|
|
)
|
|
end
|
|
|
|
it "supports <ol>" do
|
|
expect(html_to_markdown("<ol><li>🍆</li><li>🍅</li><li>🍄</li></ol>")).to eq("1. 🍆\n1. 🍅\n1. 🍄")
|
|
end
|
|
|
|
it "supports <p> inside <li>" do
|
|
expect(html_to_markdown("<ul><li><p>🍏</p></li><li><p>🍐</p></li><li><p>🍌</p></li></ul>")).to eq(
|
|
"- 🍏\n\n- 🍐\n\n- 🍌",
|
|
)
|
|
end
|
|
|
|
it "supports <ul> inside <ul>" do
|
|
expect(html_to_markdown(<<-HTML)).to eq(
|
|
<ul>
|
|
<li>Fruits
|
|
<ul>
|
|
<li>🍏</li>
|
|
<li>🍐</li>
|
|
<li>🍌</li>
|
|
</ul>
|
|
</li>
|
|
<li>Vegetables
|
|
<ul>
|
|
<li>🍆</li>
|
|
<li>🍅</li>
|
|
<li>🍄</li>
|
|
</ul>
|
|
</li>
|
|
</ul>
|
|
HTML
|
|
"- Fruits\n - 🍏\n - 🍐\n - 🍌\n- Vegetables\n - 🍆\n - 🍅\n - 🍄",
|
|
)
|
|
end
|
|
|
|
it "supports bare <li>" do
|
|
expect(html_to_markdown("<li>I'm alone</li>")).to eq("- I'm alone")
|
|
end
|
|
|
|
it "supports <pre>" do
|
|
expect(html_to_markdown("<pre>var foo = 'bar';</pre>")).to eq("```\nvar foo = 'bar';\n```")
|
|
expect(html_to_markdown("<pre><code>var foo = 'bar';</code></pre>")).to eq(
|
|
"```\nvar foo = 'bar';\n```",
|
|
)
|
|
expect(
|
|
html_to_markdown(%Q{<pre><code class="lang-javascript">var foo = 'bar';</code></pre>}),
|
|
).to eq("```javascript\nvar foo = 'bar';\n```")
|
|
expect(
|
|
html_to_markdown(
|
|
"<pre> function f() {\n console.log('Hello world!');\n }</pre>",
|
|
),
|
|
).to eq("```\n function f() {\n console.log('Hello world!');\n }\n```")
|
|
end
|
|
|
|
it "supports <pre> inside <blockquote>" do
|
|
expect(
|
|
html_to_markdown("<blockquote><pre><code>var foo = 'bar';</code></pre></blockquote>"),
|
|
).to eq("> ```\n> var foo = 'bar';\n> ```")
|
|
end
|
|
|
|
it "works" do
|
|
expect(
|
|
html_to_markdown(
|
|
"<ul><li><p>A list item with a blockquote:</p><blockquote><p>This is a <strong>blockquote</strong><br>inside a list item.</p></blockquote></li></ul>",
|
|
),
|
|
).to eq(
|
|
"- A list item with a blockquote:\n\n > This is a **blockquote**\n > inside a list item.",
|
|
)
|
|
end
|
|
|
|
it "supports html document" do
|
|
expect(html_to_markdown("<html><body>Hello<div>World</div></body></html>")).to eq(
|
|
"Hello\nWorld",
|
|
)
|
|
end
|
|
|
|
it "handles <p>" do
|
|
expect(html_to_markdown("<p>1st paragraph</p><p>2nd paragraph</p>")).to eq(
|
|
"1st paragraph\n\n2nd paragraph",
|
|
)
|
|
expect(
|
|
html_to_markdown(
|
|
"<body><p>1st paragraph</p>\n <p> 2nd paragraph\n 2nd paragraph</p>\n<p>3rd paragraph</p></body>",
|
|
),
|
|
).to eq("1st paragraph\n\n2nd paragraph 2nd paragraph\n\n3rd paragraph")
|
|
end
|
|
|
|
it "handles <div>" do
|
|
expect(html_to_markdown("<div>1st div</div><div>2nd div</div>")).to eq("1st div\n2nd div")
|
|
end
|
|
|
|
it "swallows <span>" do
|
|
expect(html_to_markdown("<span>Span</span>")).to eq("Span")
|
|
end
|
|
|
|
it "swallows <u>" do
|
|
expect(html_to_markdown("<u>Underline</u>")).to eq("Underline")
|
|
end
|
|
|
|
it "removes <script>" do
|
|
expect(html_to_markdown("<script>var foo = 'bar'</script>")).to eq("")
|
|
end
|
|
|
|
it "removes <style>" do
|
|
expect(html_to_markdown("<style>* { margin: 0 }</style>")).to eq("")
|
|
end
|
|
|
|
it "handles <p> and <div> within <span>" do
|
|
html = "<div>1st paragraph<span><div>2nd paragraph</div><p>3rd paragraph</p></span></div>"
|
|
expect(html_to_markdown(html)).to eq("1st paragraph\n2nd paragraph\n\n3rd paragraph")
|
|
end
|
|
|
|
it "handles <p> and <div> within <font>" do
|
|
html =
|
|
"<font>1st paragraph<br><span>2nd paragraph</span><div>3rd paragraph</div><p>4th paragraph</p></font>"
|
|
expect(html_to_markdown(html)).to eq(
|
|
"1st paragraph\n2nd paragraph\n3rd paragraph\n\n4th paragraph",
|
|
)
|
|
end
|
|
|
|
context "with an oddly placed <br>" do
|
|
it "handles <strong>" do
|
|
expect(html_to_markdown("Hello <strong><br>Bold</strong> World")).to eq(
|
|
"Hello\n**Bold** World",
|
|
)
|
|
expect(html_to_markdown("Hello <strong>Bold<br></strong> World")).to eq(
|
|
"Hello **Bold**\nWorld",
|
|
)
|
|
expect(html_to_markdown("Hello <strong>Bold<br>text</strong> World")).to eq(
|
|
"Hello **Bold**\n**text** World",
|
|
)
|
|
end
|
|
|
|
it "handles <em>" do
|
|
expect(html_to_markdown("Hello <em><br>Italic</em> World")).to eq("Hello\n*Italic* World")
|
|
expect(html_to_markdown("Hello <em>Italic<br></em> World")).to eq("Hello *Italic*\nWorld")
|
|
expect(html_to_markdown("Hello <em>Italic<br>text</em> World")).to eq(
|
|
"Hello *Italic*\n*text* World",
|
|
)
|
|
end
|
|
|
|
it "works" do
|
|
expect(html_to_markdown("<div>A <b> B <i> C <br> D </i> E <br> F </b> G</div>")).to eq(
|
|
"A __B *C*__\n__*D* E__\n**F** G",
|
|
)
|
|
end
|
|
end
|
|
|
|
context "with an empty tag" do
|
|
it "handles <strong>" do
|
|
expect(html_to_markdown("<strong></strong>")).to eq("")
|
|
expect(html_to_markdown("<strong> </strong>")).to eq("")
|
|
expect(html_to_markdown("Some<strong> </strong>text")).to eq("Some text")
|
|
expect(html_to_markdown("Some<strong> </strong>text")).to eq("Some text")
|
|
end
|
|
|
|
it "handles <em>" do
|
|
expect(html_to_markdown("<em></em>")).to eq("")
|
|
expect(html_to_markdown("<em> </em>")).to eq("")
|
|
expect(html_to_markdown("Some<em> </em>text")).to eq("Some text")
|
|
expect(html_to_markdown("Some<em> </em>text")).to eq("Some text")
|
|
end
|
|
end
|
|
|
|
context "with spaces around text" do
|
|
it "handles <strong>" do
|
|
expect(html_to_markdown("<strong> Bold</strong>")).to eq("**Bold**")
|
|
expect(html_to_markdown("<strong> Bold</strong>")).to eq("**Bold**")
|
|
expect(html_to_markdown("<strong>Bold </strong>")).to eq("**Bold**")
|
|
expect(html_to_markdown("<strong>Bold </strong>")).to eq("**Bold**")
|
|
expect(html_to_markdown("Some<strong> bold</strong> text")).to eq("Some **bold** text")
|
|
expect(html_to_markdown("Some<strong> bold</strong> text")).to eq("Some **bold** text")
|
|
expect(html_to_markdown("Some <strong>bold </strong>text")).to eq("Some **bold** text")
|
|
expect(html_to_markdown("Some <strong>bold </strong>text")).to eq("Some **bold** text")
|
|
end
|
|
|
|
it "handles <em>" do
|
|
expect(html_to_markdown("<em> Italic</em>")).to eq("*Italic*")
|
|
expect(html_to_markdown("<em> Italic</em>")).to eq("*Italic*")
|
|
expect(html_to_markdown("<em>Italic </em>")).to eq("*Italic*")
|
|
expect(html_to_markdown("<em>Italic </em>")).to eq("*Italic*")
|
|
expect(html_to_markdown("Some<em> italic</em> text")).to eq("Some *italic* text")
|
|
expect(html_to_markdown("Some<em> italic</em> text")).to eq("Some *italic* text")
|
|
expect(html_to_markdown("Some <em>italic </em>text")).to eq("Some *italic* text")
|
|
expect(html_to_markdown("Some <em>italic </em>text")).to eq("Some *italic* text")
|
|
end
|
|
end
|
|
|
|
it "supports <table>" do
|
|
html = <<~HTML
|
|
<table>
|
|
<thead>
|
|
<tr>
|
|
<th>This</th>
|
|
<th>is</th>
|
|
<th>the</th>
|
|
<th><i>headers</i></th>
|
|
</tr>
|
|
</thead>
|
|
<tbody>
|
|
<tr>
|
|
<td>I am</td>
|
|
<td>the</td>
|
|
<td><b>first</b></td>
|
|
<td>row</td>
|
|
</tr>
|
|
<tr>
|
|
<td>And this</td>
|
|
<td>is the</td>
|
|
<td>2<sup>nd</sup></td>
|
|
<td>line</td>
|
|
</tr>
|
|
</tbody>
|
|
</table>
|
|
HTML
|
|
|
|
markdown = <<~MD
|
|
| This | is | the | *headers* |
|
|
| - | - | - | - |
|
|
| I am | the | **first** | row |
|
|
| And this | is the | 2<sup>nd</sup> | line |
|
|
MD
|
|
|
|
expect(html_to_markdown(html)).to eq(markdown.strip)
|
|
|
|
expect(html_to_markdown("<table><tr><td>Hello</td><td>World</td></tr></table>")).to eq(
|
|
"| Hello | World |\n| - | - |",
|
|
)
|
|
end
|
|
|
|
it "doesn't swallow badly formatted <table>" do
|
|
html = <<~HTML
|
|
<table>
|
|
<tr>
|
|
<th>1</th>
|
|
<th>2</th>
|
|
<th>3</th>
|
|
<th>4</th>
|
|
</tr>
|
|
<tr>
|
|
<td>One</td>
|
|
<td>Two</td>
|
|
<td>Three</td>
|
|
</tr>
|
|
</table>
|
|
HTML
|
|
|
|
expect(html_to_markdown(html)).to eq("1 2 3 4 \nOne Two Three")
|
|
end
|
|
end
|