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Support parsing and removing a YAML metadata block in markdown.

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This commit is contained in:
Sean Harvey 2017-03-21 16:33:57 +13:00
parent d474be2841
commit 484e57e404
7 changed files with 152 additions and 123 deletions
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40
code/DocumentationParser.php
View File

@ -218,7 +218,7 @@ class DocumentationParser
!
\[
(.*?) # image title (non greedy)
\]
\]
\(
(.*?) # image url (non greedy)
\)
@ -432,18 +432,18 @@ class DocumentationParser
public static function rewrite_relative_links($md, $page)
{
$baselink = $page->getEntity()->Link();
$re = '/
([^\!]?) # exclude image format
\[
(.*?) # link title (non greedy)
\]
\]
\(
(.*?) # link url (non greedy)
\)
/x';
preg_match_all($re, $md, $matches);
// relative path (relative to module base folder), without the filename.
// For "sapphire/en/current/topics/templates", this would be "templates"
$relativePath = DocumentationHelper::normalizePath(dirname($page->getRelativePath()));
@ -522,36 +522,4 @@ class DocumentationParser
return $md;
}
/**
* Strips out the metadata for a page
*
* @param DocumentationPage
*/
public static function retrieve_meta_data(DocumentationPage $page)
{
$md = $page->getMarkdown();
if ($md) {
// get the text up to the first empty line
$extPattern = "/^(.+)\n\r*\n/Uis";
$matches = preg_match($extPattern, $md, $block);
if ($matches && $block[1]) {
// find the key/value pairs
$lines = preg_split('/\v+/', $block[1]);
$key = '';
$value = '';
foreach ($lines as $line) {
if (strpos($line, ':') !== false) {
list($key, $value) = explode(':', $line, 2);
$key = trim($key);
$value = trim($value);
} else {
$value .= ' ' . trim($line);
}
$page->setMetaData($key, $value);
}
}
}
}
}

91
code/models/DocumentationPage.php
View File

@ -172,13 +172,6 @@ class DocumentationPage extends ViewableData
return false;
}
public function setMetaData($key, $value)
{
$key = strtolower($key);
$this->$key = $value;
}
/**
* @return string
*/
@ -280,37 +273,66 @@ class DocumentationPage extends ViewableData
*/
public function populateMetaDataFromText(&$md, $removeMetaData = false)
{
if ($md) {
// get the text up to the first empty line
$extPattern = "/^(.+)\n\r*\n/Uis";
$matches = preg_match($extPattern, $md, $block);
if (!$md) {
return;
}
if ($matches && $block[1]) {
$metaDataFound = false;
// find the key/value pairs
$lines = preg_split('/\v+/', $block[1]);
$key = '';
$value = '';
foreach ($lines as $line) {
if (strpos($line, ':') !== false) {
list($key, $value) = explode(':', $line, 2);
$key = trim($key);
$value = trim($value);
} else {
$value .= ' ' . trim($line);
}
if (property_exists(get_class(), $key)) {
$this->$key = $value;
$metaDataFound = true;
}
// See if there is YAML metadata block at the top of the document. e.g.
// ---
// property: value
// another: value
// ---
//
// If we found one, then we'll use a YAML parser to extract the
// data out and then remove the whole block from the markdown string.
$parser = new \Mni\FrontYAML\Parser();
$document = $parser->parse($md, false);
$yaml = $document->getYAML();
if ($yaml) {
foreach ($yaml as $key => $value) {
if (!property_exists(get_class($this), $key)) {
continue;
}
$this->$key = $value;
}
if ($removeMetaData) {
$md = $document->getContent();
}
return;
}
// optionally remove the metadata block (only on the page that
// is displayed)
if ($metaDataFound && $removeMetaData) {
$md = preg_replace($extPattern, '', $md);
// this is the alternative way of parsing the properties out that don't contain
// a YAML block declared with ---
//
// get the text up to the first empty line
$extPattern = "/^(.+)\n\r*\n/Uis";
$matches = preg_match($extPattern, $md, $block);
if ($matches && $block[1]) {
$metaDataFound = false;
// find the key/value pairs
$lines = preg_split('/\v+/', $block[1]);
$key = '';
$value = '';
foreach ($lines as $line) {
if (strpos($line, ':') !== false) {
list($key, $value) = explode(':', $line, 2);
$key = trim($key);
$value = trim($value);
} else {
$value .= ' ' . trim($line);
}
if (property_exists(get_class(), $key)) {
$this->$key = $value;
$metaDataFound = true;
}
}
// optionally remove the metadata block (only on the page that
// is displayed)
if ($metaDataFound && $removeMetaData) {
$md = preg_replace($extPattern, '', $md);
}
}
}
@ -328,3 +350,4 @@ class DocumentationPage extends ViewableData
return sprintf(get_class($this) .': %s)', $this->getPath());
}
}

43
composer.json
View File

@ -1,24 +1,25 @@
{
"name": "silverstripe/docsviewer",
"description": "Documentation viewer module for SilverStripe",
"type": "silverstripe-module",
"keywords": ["silverstripe", "documentation"],
"license": "BSD-3-Clause",
"authors": [{
"name": "Will Rossiter",
"homepage": "http://wilr.github.io",
"email": "will@fullscreen.io"
}],
"support": {
"email": "will@fullscreen.io",
"irc": "irc://irc.freenode.org/silverstripe"
},
"name": "silverstripe/docsviewer",
"description": "Documentation viewer module for SilverStripe",
"type": "silverstripe-module",
"keywords": ["silverstripe", "documentation"],
"license": "BSD-3-Clause",
"authors": [{
"name": "Will Rossiter",
"homepage": "http://wilr.github.io",
"email": "will@fullscreen.io"
}],
"support": {
"email": "will@fullscreen.io",
"irc": "irc://irc.freenode.org/silverstripe"
},
"require": {
"silverstripe/framework": "~3.1",
"erusev/parsedown-extra": "0.2.2",
"erusev/parsedown": "~1.1.0"
},
"suggest": {
"silverstripe/staticpublisher": "Allows publishing documentation as HTML"
}
"silverstripe/framework": "~3.1",
"erusev/parsedown-extra": "0.2.2",
"erusev/parsedown": "~1.1.0",
"mnapoli/front-yaml": "^1.5"
},
"suggest": {
"silverstripe/staticpublisher": "Allows publishing documentation as HTML"
}
}

80
tests/DocumentationParserTest.php
View File

@ -11,7 +11,7 @@ class DocumentationParserTest extends SapphireTest
public function tearDown()
{
parent::tearDown();
Config::unnest();
}
@ -21,7 +21,7 @@ class DocumentationParserTest extends SapphireTest
Config::nest();
// explicitly use dev/docs. Custom paths should be tested separately
// explicitly use dev/docs. Custom paths should be tested separately
Config::inst()->update(
'DocumentationViewer', 'link_base', 'dev/docs/'
);
@ -48,7 +48,7 @@ class DocumentationParserTest extends SapphireTest
'subpage.md',
DOCSVIEWER_PATH. '/tests/docs/en/subfolder/subpage.md'
);
$this->subSubPage = new DocumentationPage(
$this->entity,
'subsubpage.md',
@ -128,13 +128,12 @@ with multiple
lines
and tab indent
and escaped < brackets
```
Normal text after code block
HTML;
$this->assertContains($expected, $result, 'Custom code blocks with ::: prefix');
$expected = <<<HTML
```
code block
@ -149,7 +148,7 @@ Fenced code block
```
HTML;
$this->assertContains($expected, $result, 'Backtick code blocks');
$expected = <<<HTML
```php
Fenced box with
@ -171,7 +170,7 @@ HTML;
$this->indexPage->getMarkdown(),
$this->indexPage
);
$this->assertContains(
'[link: subfolder index](dev/docs/en/documentationparsertest/2.4/subfolder/)',
$result
@ -183,7 +182,7 @@ HTML;
$this->page->getMarkdown(),
$this->page
);
$this->assertContains(
'[link: subfolder index](dev/docs/en/documentationparsertest/2.4/subfolder/)',
$result
@ -217,7 +216,7 @@ HTML;
'[link: relative](dev/docs/en/documentationparsertest/2.4/subfolder/subpage.md/)',
$result
);
$this->assertContains(
'[link: absolute index](dev/docs/en/documentationparsertest/2.4/)',
$result
@ -233,22 +232,22 @@ HTML;
'[link: relative index](dev/docs/en/documentationparsertest/2.4/)',
$result
);
$this->assertContains(
'[link: relative parent page](dev/docs/en/documentationparsertest/2.4/test/)',
$result
);
$this->assertContains(
'[link: absolute parent page](dev/docs/en/documentationparsertest/2.4/test/)',
$result
);
$result = DocumentationParser::rewrite_relative_links(
$this->subSubPage->getMarkdown(),
$this->subSubPage
);
$this->assertContains(
'[link: absolute index](dev/docs/en/documentationparsertest/2.4/)',
$result
@ -286,7 +285,7 @@ HTML;
}
public function testImageRewrites()
{
$result = DocumentationParser::rewrite_image_links(
@ -311,7 +310,7 @@ HTML;
),
$result
);
$expected = Controller::join_links(
Director::absoluteBaseURL(), DOCSVIEWER_DIR, '/tests/docs/en/_images/image.png'
);
@ -321,7 +320,7 @@ HTML;
$result
);
}
public function testApiLinks()
{
@ -357,14 +356,14 @@ HTML;
}
}
public function testHeadlineAnchors()
{
$result = DocumentationParser::rewrite_heading_anchors(
$this->page->getMarkdown(),
$this->page
);
/*
# Heading one {#Heading-one}
@ -379,7 +378,7 @@ HTML;
## Heading duplicate {#Heading-duplicate-2}
## Heading duplicate {#Heading-duplicate-3}
*/
$this->assertContains('# Heading one {#heading-one}', $result);
@ -395,14 +394,41 @@ HTML;
public function testRetrieveMetaData()
{
DocumentationParser::retrieve_meta_data($this->metaDataPage);
$this->assertEquals('Dr. Foo Bar.', $this->metaDataPage->author);
$this->assertEquals("Foo Bar's Test page.", $this->metaDataPage->getTitle());
$this->assertEquals("Foo Bar's Test page.", $this->metaDataPage->getTitle());
$this->assertEquals("A long intro that splits over many lines", $this->metaDataPage->getIntroduction());
$this->metaDataPage->getMarkdown(true);
$this->assertEquals('Foo Bar\'s Test page.', $this->metaDataPage->getTitle());
$this->assertEquals('A long intro that splits over many lines', $this->metaDataPage->getIntroduction());
$this->assertEquals('Foo Bar Test page description', $this->metaDataPage->getSummary());
$parsed = DocumentationParser::parse($this->metaDataPage);
$expected = <<<HTML
<h1 id="content">Content</h1>
HTML;
$this->assertEquals($parsed, $expected, 'Metadata block removed, parsed correctly');
}
public function testRetrieveMetaDataYamlBlock()
{
$page = new DocumentationPage(
$this->entityAlt,
'MetaDataYamlBlockTest.md',
DOCSVIEWER_PATH . '/tests/docs-parser/en/MetaDataYamlBlockTest.md'
);
$page->getMarkdown(true);
$this->assertEquals('Foo Bar\'s Test page.', $page->getTitle());
$this->assertEquals('This is the page\'s description', $page->getSummary());
$parsed = DocumentationParser::parse($page);
$expected = <<<HTML
<h2 id="content-2">Content</h2>
<p>Content goes here.</p>
<hr />
<h2>randomblock: ignored</h2>
HTML;
$this->assertEquals($parsed, $expected, 'YAML metadata block removed, parsed correctly');
}
public function testRewritingRelativeLinksToFiles()
{
$parsed = DocumentationParser::parse($this->filePage);
@ -411,7 +437,7 @@ HTML;
DOCSVIEWER_DIR .'/tests/docs-parser/en/_images/external_link.png',
$parsed
);
$this->assertContains(
DOCSVIEWER_DIR .'/tests/docs-parser/en/_images/test.tar.gz',
$parsed

7
tests/docs-parser/en/MetaDataTest.md
View File

@ -1,7 +1,6 @@
Title: Foo Bar's Test page.
Author: Dr. Foo Bar.
Another: Test.
Introduction: A long intro that
title: Foo Bar's Test page.
summary: Foo Bar Test page description
introduction: A long intro that
splits over
many lines

13
tests/docs-parser/en/MetaDataYamlBlockTest.md Normal file
View File

@ -0,0 +1,13 @@
---
title: "Foo Bar's Test page."
summary: "This is the page's description"
---
## Content
Content goes here.
---
randomblock: ignored
---

1
tests/docs/en/test.md
View File

@ -29,7 +29,6 @@ test
lines
and tab indent
and escaped < brackets
Normal text after code block