diff --git a/src/__phutil_library_map__.php b/src/__phutil_library_map__.php
--- a/src/__phutil_library_map__.php
+++ b/src/__phutil_library_map__.php
@@ -150,6 +150,8 @@
     'PhutilDocblockParserTestCase' => 'parser/__tests__/PhutilDocblockParserTestCase.php',
     'PhutilEditDistanceMatrix' => 'utils/PhutilEditDistanceMatrix.php',
     'PhutilEditDistanceMatrixTestCase' => 'utils/__tests__/PhutilEditDistanceMatrixTestCase.php',
+    'PhutilEditorConfig' => 'parser/PhutilEditorConfig.php',
+    'PhutilEditorConfigTestCase' => 'parser/__tests__/PhutilEditorConfigTestCase.php',
     'PhutilEmailAddress' => 'parser/PhutilEmailAddress.php',
     'PhutilEmailAddressTestCase' => 'parser/__tests__/PhutilEmailAddressTestCase.php',
     'PhutilEmptyAuthAdapter' => 'auth/PhutilEmptyAuthAdapter.php',
@@ -587,6 +589,7 @@
     'PhutilDisqusAuthAdapter' => 'PhutilOAuthAuthAdapter',
     'PhutilDocblockParserTestCase' => 'PhutilTestCase',
     'PhutilEditDistanceMatrixTestCase' => 'PhutilTestCase',
+    'PhutilEditorConfigTestCase' => 'PhutilTestCase',
     'PhutilEmailAddressTestCase' => 'PhutilTestCase',
     'PhutilEmptyAuthAdapter' => 'PhutilAuthAdapter',
     'PhutilErrorHandlerTestCase' => 'PhutilTestCase',
diff --git a/src/parser/PhutilEditorConfig.php b/src/parser/PhutilEditorConfig.php
new file mode 100644
--- /dev/null
+++ b/src/parser/PhutilEditorConfig.php
@@ -0,0 +1,97 @@
+<?php
+
+/**
+ * Utilities for parsing [[http://editorconfig.org/ | EditorConfig]] files.
+ */
+final class PhutilEditorConfig {
+
+  private $configs;
+  private $rootPath;
+
+  /**
+   * Constructor.
+   *
+   * @param string  The root directory.
+   */
+  public function __construct($root) {
+    $this->rootPath = $root;
+
+    $paths = id(new FileFinder($root))
+      ->withType('f')
+      ->withName('.editorconfig')
+      ->find();
+
+    foreach ($paths as $path) {
+      $this->addEditorConfigFile(Filesystem::resolvePath($path, $root));
+    }
+  }
+
+  private function addEditorConfigFile($path) {
+    $file = Filesystem::readFile($path);
+    $config = phutil_ini_decode($file);
+
+    $path = dirname($path);
+    $this->configs[$path] = array();
+
+    foreach ($config as $key => $value) {
+      if (preg_match('@/@', $key)) {
+        $this->configs[$path][phutil_glob_to_regex('**/'.$key)] = $value;
+      } else if (preg_match('@^/@', $key)) {
+        $this->configs[$path][phutil_glob_to_regex(substr($key, 1))] = $value;
+      } else {
+        $this->configs[$path][phutil_glob_to_regex($key)] = $value;
+      }
+    }
+  }
+
+  public function getConfig($path, $key) {
+    $config = $this->config;
+    $parts  = explode(DIRECTORY_SEPARATOR, $path);
+
+    foreach ($parts as $part) {
+      $config = idx($config, $part);
+    }
+  }
+
+  public function setConfig($path, $key, $value) {
+    foreach ($this->configs as $config_path => $config) {
+      if (Filesystem::isDescendant($path, $config_path)) {
+        foreach ($config as $config_key => $config_value) {
+
+        }
+      }
+    }
+  }
+
+  public function matches($path) {
+
+  }
+
+
+
+
+  /**
+   * Return the paths of all EditorConfig files that were found.
+   *
+   * @return list<string>
+   */
+  public function getPaths() {
+    $paths = array();
+
+    foreach (array_keys($this->configs) as $path) {
+      $paths[] = $path.'/.editorconfig';
+    }
+
+    return $paths;
+  }
+
+  /**
+   * Return the root path.
+   *
+   * @return string
+   */
+  public function getRootPath() {
+    return $this->rootPath;
+  }
+
+}
diff --git a/src/parser/__tests__/PhutilEditorConfigTestCase.php b/src/parser/__tests__/PhutilEditorConfigTestCase.php
new file mode 100644
--- /dev/null
+++ b/src/parser/__tests__/PhutilEditorConfigTestCase.php
@@ -0,0 +1,50 @@
+<?php
+
+/**
+ * @group testcase
+ */
+final class PhutilEditorConfigTestCase extends PhutilTestCase {
+
+  public function testGetPaths() {
+    $tests = array(
+      dirname(__FILE__) => array(
+        dirname(__FILE__).'/editorconfig/.editorconfig',
+        dirname(__FILE__).'/editorconfig/subdir1/.editorconfig',
+        dirname(__FILE__).'/editorconfig/subdir2/.editorconfig',
+      ),
+      dirname(__FILE__).'/editorconfig/subdir1' => array(
+        dirname(__FILE__).'/editorconfig/subdir1/.editorconfig',
+      ),
+      dirname(__FILE__).'/editorconfig/subdir2' => array(
+        dirname(__FILE__).'/editorconfig/subdir2/.editorconfig',
+      ),
+      dirname(__FILE__).'/../../../' => array(
+        Filesystem::resolvePath('.editorconfig', dirname(__FILE__).'/../../..'),
+        dirname(__FILE__).'/editorconfig/.editorconfig',
+        dirname(__FILE__).'/editorconfig/subdir1/.editorconfig',
+        dirname(__FILE__).'/editorconfig/subdir2/.editorconfig',
+      ),
+    );
+
+    foreach ($tests as $input => $expect) {
+      $editorconfig = new PhutilEditorConfig($input);
+      $this->assertEqual($expect, $editorconfig->getPaths());
+    }
+  }
+
+  public function testGetRootPath() {
+    $tests = array(
+      dirname(__FILE__) => dirname(__FILE__),
+      dirname(__FILE__).'/editorconfig/subdir1'
+        => dirname(__FILE__).'/editorconfig/subdir1',
+      dirname(__FILE__).'/editorconfig/subdir2'
+        => dirname(__FILE__).'/editorconfig/subdir2',
+    );
+
+    foreach ($tests as $input => $expect) {
+      $editorconfig = new PhutilEditorConfig($input);
+      $this->assertEqual($expect, $editorconfig->getRootPath());
+    }
+  }
+
+}
diff --git a/src/parser/__tests__/editorconfig/.editorconfig b/src/parser/__tests__/editorconfig/.editorconfig
new file mode 100644
diff --git a/src/parser/__tests__/editorconfig/subdir1/.editorconfig b/src/parser/__tests__/editorconfig/subdir1/.editorconfig
new file mode 100644
diff --git a/src/parser/__tests__/editorconfig/subdir2/.editorconfig b/src/parser/__tests__/editorconfig/subdir2/.editorconfig
new file mode 100644
--- /dev/null
+++ b/src/parser/__tests__/editorconfig/subdir2/.editorconfig
@@ -0,0 +1 @@
+root = true