Add a basic Remarkup document rendering engine

Summary:
Ref T13105. Although Markdown is trickier to deal with, we can handle Remarkup easily.

This may need some support for encoding options.

Test Plan: Viewed `.remarkup` files, got remarkup document presentation by default. Viewed other text files, got an option to render as remarkup.

Reviewers: avivey

Reviewed By: avivey

Subscribers: mydeveloperday, avivey

Maniphest Tasks: T13105

Differential Revision: https://secure.phabricator.com/D19251

resources/celerity/map.php

@@ -9,7 +9,7 @@ return array(
   'names' => array(
     'conpherence.pkg.css' => 'e68cf1fa',
     'conpherence.pkg.js' => '15191c65',
-    'core.pkg.css' => '6da3c0e5',
+    'core.pkg.css' => 'afe29a6c',
     'core.pkg.js' => 'b9b4a943',
     'differential.pkg.css' => '113e692c',
     'differential.pkg.js' => 'f6d809c0',
@@ -168,7 +168,7 @@ return array(
     'rsrc/css/phui/phui-object-box.css' => '9cff003c',
     'rsrc/css/phui/phui-pager.css' => 'edcbc226',
     'rsrc/css/phui/phui-pinboard-view.css' => '2495140e',
-    'rsrc/css/phui/phui-property-list-view.css' => '6ef560df',
+    'rsrc/css/phui/phui-property-list-view.css' => '94a14381',
     'rsrc/css/phui/phui-remarkup-preview.css' => '54a34863',
     'rsrc/css/phui/phui-segment-bar-view.css' => 'b1d1b892',
     'rsrc/css/phui/phui-spacing.css' => '042804d6',
@@ -850,7 +850,7 @@ return array(
     'phui-oi-simple-ui-css' => 'a8beebea',
     'phui-pager-css' => 'edcbc226',
     'phui-pinboard-view-css' => '2495140e',
-    'phui-property-list-view-css' => '6ef560df',
+    'phui-property-list-view-css' => '94a14381',
     'phui-remarkup-preview-css' => '54a34863',
     'phui-segment-bar-view-css' => 'b1d1b892',
     'phui-spacing-css' => '042804d6',

src/__phutil_library_map__.php

@@ -3967,6 +3967,7 @@ phutil_register_library_map(array(
     'PhabricatorRemarkupCowsayBlockInterpreter' => 'infrastructure/markup/interpreter/PhabricatorRemarkupCowsayBlockInterpreter.php',
     'PhabricatorRemarkupCustomBlockRule' => 'infrastructure/markup/rule/PhabricatorRemarkupCustomBlockRule.php',
     'PhabricatorRemarkupCustomInlineRule' => 'infrastructure/markup/rule/PhabricatorRemarkupCustomInlineRule.php',
+    'PhabricatorRemarkupDocumentEngine' => 'applications/files/document/PhabricatorRemarkupDocumentEngine.php',
     'PhabricatorRemarkupEditField' => 'applications/transactions/editfield/PhabricatorRemarkupEditField.php',
     'PhabricatorRemarkupFigletBlockInterpreter' => 'infrastructure/markup/interpreter/PhabricatorRemarkupFigletBlockInterpreter.php',
     'PhabricatorRemarkupUIExample' => 'applications/uiexample/examples/PhabricatorRemarkupUIExample.php',
@@ -9710,6 +9711,7 @@ phutil_register_library_map(array(
     'PhabricatorRemarkupCowsayBlockInterpreter' => 'PhutilRemarkupBlockInterpreter',
     'PhabricatorRemarkupCustomBlockRule' => 'PhutilRemarkupBlockRule',
     'PhabricatorRemarkupCustomInlineRule' => 'PhutilRemarkupRule',
+    'PhabricatorRemarkupDocumentEngine' => 'PhabricatorDocumentEngine',
     'PhabricatorRemarkupEditField' => 'PhabricatorEditField',
     'PhabricatorRemarkupFigletBlockInterpreter' => 'PhutilRemarkupBlockInterpreter',
     'PhabricatorRemarkupUIExample' => 'PhabricatorUIExample',

src/applications/files/document/PhabricatorDocumentRef.php

@@ -7,6 +7,7 @@ final class PhabricatorDocumentRef
   private $mimeType;
   private $file;
   private $byteLength;
+  private $snippet;
 
   public function setFile(PhabricatorFile $file) {
     $this->file = $file;
@@ -104,4 +105,17 @@ final class PhabricatorDocumentRef
     return $mime_type;
   }
 
+  public function isProbablyText() {
+    $snippet = $this->getSnippet();
+    return (strpos($snippet, "\0") === false);
+  }
+
+  public function getSnippet() {
+    if ($this->snippet === null) {
+      $this->snippet = $this->loadData(null, (1024 * 1024 * 1));
+    }
+
+    return $this->snippet;
+  }
+
 }

src/applications/files/document/PhabricatorRemarkupDocumentEngine.php

@@ -0,0 +1,47 @@
+<?php
+
+final class PhabricatorRemarkupDocumentEngine
+  extends PhabricatorDocumentEngine {
+
+  const ENGINEKEY = 'remarkup';
+
+  public function getViewAsLabel(PhabricatorDocumentRef $ref) {
+    return pht('View as Remarkup');
+  }
+
+  protected function getDocumentIconIcon(PhabricatorDocumentRef $ref) {
+    return 'fa-file-text-o';
+  }
+
+  protected function getContentScore(PhabricatorDocumentRef $ref) {
+    $name = $ref->getName();
+    if (preg_match('/\\.remarkup\z/i', $name)) {
+      return 2000;
+    }
+
+    return 500;
+  }
+
+  protected function canRenderDocumentType(PhabricatorDocumentRef $ref) {
+    return $ref->isProbablyText();
+  }
+
+  protected function newDocumentContent(PhabricatorDocumentRef $ref) {
+    $viewer = $this->getViewer();
+
+    $content = $ref->loadData();
+    $content = phutil_utf8ize($content);
+
+    $remarkup = new PHUIRemarkupView($viewer, $content);
+
+    $container = phutil_tag(
+      'div',
+      array(
+        'class' => 'document-engine-remarkup',
+      ),
+      $remarkup);
+
+    return $container;
+  }
+
+}

webroot/rsrc/css/phui/phui-property-list-view.css

@@ -244,3 +244,7 @@ div.phui-property-list-stacked .phui-property-list-properties
   margin: 20px;
   white-space: pre;
 }
+
+.document-engine-remarkup {
+  margin: 20px;
+}