Diffusion: basic file browse capability

Summary:
Very rough cut of file browsing. Not terribly useful yet, but it does
cause file data to appear in the browser window.

Test Plan:
viewed a file from a git repo

Reviewed By: jwilson
Reviewers: aran, jwilson
CC: jwilson
Differential Revision: 64

src/__phutil_library_map__.php

@@ -143,10 +143,14 @@ phutil_register_library_map(array(
     'DifferentialSubscribeController' => 'applications/differential/controller/subscribe',
     'DifferentialUnitStatus' => 'applications/differential/constants/unitstatus',
     'DiffusionBrowseController' => 'applications/diffusion/controller/browse',
+    'DiffusionBrowseFileController' => 'applications/diffusion/controller/file',
     'DiffusionBrowseQuery' => 'applications/diffusion/query/browse/base',
     'DiffusionBrowseTableView' => 'applications/diffusion/view/browsetable',
     'DiffusionController' => 'applications/diffusion/controller/base',
+    'DiffusionFileContent' => 'applications/diffusion/data/filecontent',
+    'DiffusionFileContentQuery' => 'applications/diffusion/query/filecontent/base',
     'DiffusionGitBrowseQuery' => 'applications/diffusion/query/browse/git',
+    'DiffusionGitFileContentQuery' => 'applications/diffusion/query/filecontent/git',
     'DiffusionHomeController' => 'applications/diffusion/controller/home',
     'DiffusionRepositoryPath' => 'applications/diffusion/data/repositorypath',
     'Javelin' => 'infrastructure/javelin/api',
@@ -428,9 +432,11 @@ phutil_register_library_map(array(
     'DifferentialRevisionViewController' => 'DifferentialController',
     'DifferentialSubscribeController' => 'DifferentialController',
     'DiffusionBrowseController' => 'DiffusionController',
+    'DiffusionBrowseFileController' => 'DiffusionController',
     'DiffusionBrowseTableView' => 'AphrontView',
     'DiffusionController' => 'PhabricatorController',
     'DiffusionGitBrowseQuery' => 'DiffusionBrowseQuery',
+    'DiffusionGitFileContentQuery' => 'DiffusionFileContentQuery',
     'DiffusionHomeController' => 'DiffusionController',
     'ManiphestController' => 'PhabricatorController',
     'ManiphestDAO' => 'PhabricatorLiskDAO',

src/applications/diffusion/controller/browse/DiffusionBrowseController.php

@@ -66,7 +66,11 @@ class DiffusionBrowseController extends DiffusionController {
           $severity = AphrontErrorView::SEVERITY_WARNING;
           break;
         case DiffusionBrowseQuery::REASON_IS_FILE:
-          throw new Exception("TODO: implement this");
+          $controller = new DiffusionBrowseFileController($this->getRequest());
+          $controller->setRepository($repository);
+          $controller->setPath($this->path);
+          $controller->setCommit($this->commit);
+          return $this->delegateToController($controller);
           break;
         default:
           throw new Exception("Unknown failure reason!");

src/applications/diffusion/controller/browse/__init__.php

@@ -7,6 +7,7 @@
 
 
 phutil_require_module('phabricator', 'applications/diffusion/controller/base');
+phutil_require_module('phabricator', 'applications/diffusion/controller/file');
 phutil_require_module('phabricator', 'applications/diffusion/query/browse/base');
 phutil_require_module('phabricator', 'applications/diffusion/view/browsetable');
 phutil_require_module('phabricator', 'view/form/error');

src/applications/diffusion/controller/file/DiffusionBrowseFileController.php

@@ -0,0 +1,64 @@
+<?php
+
+/*
+ * Copyright 2011 Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+class DiffusionBrowseFileController extends DiffusionController {
+
+  private $callsign;
+  private $path;
+  private $line;
+  private $commit;
+  private $view;
+
+  private $repository;
+
+  public function setRepository(DiffusionRepository $repository) {
+    $this->repository = $repository;
+  }
+
+  public function setCommit($commit) {
+    $this->commit = $commit;
+    return $this;
+  }
+
+  public function setPath($path) {
+    $this->path = $path;
+    return $this;
+  }
+
+  public function processRequest() {
+    $file_query = DiffusionFileContentQuery::newFromRepository(
+      $this->repository,
+      $this->path,
+      $this->commit);
+    $file_content = $file_query->loadFileContent();
+
+    $corpus = phutil_render_tag(
+      'textarea',
+      array(
+      ),
+      phutil_escape_html($file_content->getCorpus()));
+
+    // TODO: blame, color, line numbers, highlighting, etc etc
+
+    return $this->buildStandardPageResponse(
+      $corpus,
+      array(
+        'title' => 'Browse',
+      ));
+  }
+}

src/applications/diffusion/controller/file/__init__.php

@@ -0,0 +1,15 @@
+<?php
+/**
+ * This file is automatically generated. Lint this module to rebuild it.
+ * @generated
+ */
+
+
+
+phutil_require_module('phabricator', 'applications/diffusion/controller/base');
+phutil_require_module('phabricator', 'applications/diffusion/query/filecontent/base');
+
+phutil_require_module('phutil', 'markup');
+
+
+phutil_require_source('DiffusionBrowseFileController.php');

src/applications/diffusion/data/filecontent/DiffusionFileContent.php

@@ -0,0 +1,32 @@
+<?php
+
+/*
+ * Copyright 2011 Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+final class DiffusionFileContent {
+
+  private $corpus;
+
+  final public function setCorpus($corpus) {
+    $this->corpus = $corpus;
+    return $this;
+  }
+
+  final public function getCorpus() {
+    return $this->corpus;
+  }
+
+}

src/applications/diffusion/data/filecontent/__init__.php

@@ -0,0 +1,10 @@
+<?php
+/**
+ * This file is automatically generated. Lint this module to rebuild it.
+ * @generated
+ */
+
+
+
+
+phutil_require_source('DiffusionFileContent.php');

src/applications/diffusion/query/filecontent/base/DiffusionFileContentQuery.php

@@ -0,0 +1,70 @@
+<?php
+
+/*
+ * Copyright 2011 Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+abstract class DiffusionFileContentQuery {
+
+  private $repository;
+  private $path;
+  private $commit;
+
+  final private function __construct() {
+    // <private>
+  }
+
+  final public static function newFromRepository(
+    PhabricatorRepository $repository,
+    $path = '/',
+    $commit = null) {
+
+    switch ($repository->getVersionControlSystem()) {
+      case 'git':
+        $class = 'DiffusionGitFileContentQuery';
+        break;
+      default:
+        throw new Exception("Unsupported VCS!");
+    }
+
+    PhutilSymbolLoader::loadClass($class);
+    $query = new $class();
+
+    $query->repository = $repository;
+    $query->path = $path;
+    $query->commit = $commit;
+
+    return $query;
+  }
+
+  final protected function getRepository() {
+    return $this->repository;
+  }
+
+  final protected function getPath() {
+    return $this->path;
+  }
+
+  final protected function getCommit() {
+    return $this->commit;
+  }
+
+
+  final public function loadFileContent() {
+    return $this->executeQuery();
+  }
+
+  abstract protected function executeQuery();
+}

src/applications/diffusion/query/filecontent/base/__init__.php

@@ -0,0 +1,12 @@
+<?php
+/**
+ * This file is automatically generated. Lint this module to rebuild it.
+ * @generated
+ */
+
+
+
+phutil_require_module('phutil', 'symbols');
+
+
+phutil_require_source('DiffusionFileContentQuery.php');

src/applications/diffusion/query/filecontent/git/DiffusionGitFileContentQuery.php

@@ -0,0 +1,42 @@
+<?php
+
+/*
+ * Copyright 2011 Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+final class DiffusionGitFileContentQuery extends DiffusionFileContentQuery {
+
+  protected function executeQuery() {
+    $repository = $this->getRepository();
+    $path = $this->getPath();
+    $commit = nonempty($this->getCommit(), 'HEAD');
+
+    $local_path = $repository->getDetail('local-path');
+    $git = PhabricatorEnv::getEnvConfig('git.path');
+
+    list($corpus) = execx(
+      '(cd %s && %s cat-file blob %s:%s)',
+      $local_path,
+      $git,
+      $commit,
+      $path);
+
+    $file_content = new DiffusionFileContent();
+    $file_content->setCorpus($corpus);
+
+    return $file_content;
+  }
+
+}

src/applications/diffusion/query/filecontent/git/__init__.php

@@ -0,0 +1,17 @@
+<?php
+/**
+ * This file is automatically generated. Lint this module to rebuild it.
+ * @generated
+ */
+
+
+
+phutil_require_module('phabricator', 'applications/diffusion/data/filecontent');
+phutil_require_module('phabricator', 'applications/diffusion/query/filecontent/base');
+phutil_require_module('phabricator', 'infrastructure/env');
+
+phutil_require_module('phutil', 'future/exec');
+phutil_require_module('phutil', 'utils');
+
+
+phutil_require_source('DiffusionGitFileContentQuery.php');