Remove dependency on Sass

- Convert *.sass files to vanilla CSS
- Start using CSS variables
- Add PHP minifier

3 files changed, 243 insertions, 0 deletions

diff --git a/libs/path-converter/src/Converter.php b/libs/path-converter/src/Converter.php
new file mode 100755
index 00000000..519d3c84
--- /dev/null
+++ b/libs/path-converter/src/Converter.php
@@ -0,0 +1,196 @@
+<?php
+
+namespace MatthiasMullie\PathConverter;
+
+/**
+ * Convert paths relative from 1 file to another.
+ *
+ * E.g.
+ *     ../../images/icon.jpg relative to /css/imports/icons.css
+ * becomes
+ *     ../images/icon.jpg relative to /css/minified.css
+ *
+ * Please report bugs on https://github.com/matthiasmullie/path-converter/issues
+ *
+ * @author Matthias Mullie <pathconverter@mullie.eu>
+ * @copyright Copyright (c) 2015, Matthias Mullie. All rights reserved
+ * @license MIT License
+ */
+class Converter implements ConverterInterface
+{
+    /**
+     * @var string
+     */
+    protected $from;
+
+    /**
+     * @var string
+     */
+    protected $to;
+
+    /**
+     * @param string $from The original base path (directory, not file!)
+     * @param string $to   The new base path (directory, not file!)
+     * @param string $root Root directory (defaults to `getcwd`)
+     */
+    public function __construct($from, $to, $root = '')
+    {
+        $shared = $this->shared($from, $to);
+        if ($shared === '') {
+            // when both paths have nothing in common, one of them is probably
+            // absolute while the other is relative
+            $root = $root ?: getcwd();
+            $from = strpos($from, $root) === 0 ? $from : preg_replace('/\/+/', '/', $root.'/'.$from);
+            $to = strpos($to, $root) === 0 ? $to : preg_replace('/\/+/', '/', $root.'/'.$to);
+
+            // or traveling the tree via `..`
+            // attempt to resolve path, or assume it's fine if it doesn't exist
+            $from = @realpath($from) ?: $from;
+            $to = @realpath($to) ?: $to;
+        }
+
+        $from = $this->dirname($from);
+        $to = $this->dirname($to);
+
+        $from = $this->normalize($from);
+        $to = $this->normalize($to);
+
+        $this->from = $from;
+        $this->to = $to;
+    }
+
+    /**
+     * Normalize path.
+     *
+     * @param string $path
+     *
+     * @return string
+     */
+    protected function normalize($path)
+    {
+        // deal with different operating systems' directory structure
+        $path = rtrim(str_replace(DIRECTORY_SEPARATOR, '/', $path), '/');
+
+        /*
+         * Example:
+         *     /home/forkcms/frontend/cache/compiled_templates/../../core/layout/css/../images/img.gif
+         * to
+         *     /home/forkcms/frontend/core/layout/images/img.gif
+         */
+        do {
+            $path = preg_replace('/[^\/]+(?<!\.\.)\/\.\.\//', '', $path, -1, $count);
+        } while ($count);
+
+        return $path;
+    }
+
+    /**
+     * Figure out the shared path of 2 locations.
+     *
+     * Example:
+     *     /home/forkcms/frontend/core/layout/images/img.gif
+     * and
+     *     /home/forkcms/frontend/cache/minified_css
+     * share
+     *     /home/forkcms/frontend
+     *
+     * @param string $path1
+     * @param string $path2
+     *
+     * @return string
+     */
+    protected function shared($path1, $path2)
+    {
+        // $path could theoretically be empty (e.g. no path is given), in which
+        // case it shouldn't expand to array(''), which would compare to one's
+        // root /
+        $path1 = $path1 ? explode('/', $path1) : array();
+        $path2 = $path2 ? explode('/', $path2) : array();
+
+        $shared = array();
+
+        // compare paths & strip identical ancestors
+        foreach ($path1 as $i => $chunk) {
+            if (isset($path2[$i]) && $path1[$i] == $path2[$i]) {
+                $shared[] = $chunk;
+            } else {
+                break;
+            }
+        }
+
+        return implode('/', $shared);
+    }
+
+    /**
+     * Convert paths relative from 1 file to another.
+     *
+     * E.g.
+     *     ../images/img.gif relative to /home/forkcms/frontend/core/layout/css
+     * should become:
+     *     ../../core/layout/images/img.gif relative to
+     *     /home/forkcms/frontend/cache/minified_css
+     *
+     * @param string $path The relative path that needs to be converted
+     *
+     * @return string The new relative path
+     */
+    public function convert($path)
+    {
+        // quit early if conversion makes no sense
+        if ($this->from === $this->to) {
+            return $path;
+        }
+
+        $path = $this->normalize($path);
+        // if we're not dealing with a relative path, just return absolute
+        if (strpos($path, '/') === 0) {
+            return $path;
+        }
+
+        // normalize paths
+        $path = $this->normalize($this->from.'/'.$path);
+
+        // strip shared ancestor paths
+        $shared = $this->shared($path, $this->to);
+        $path = mb_substr($path, mb_strlen($shared));
+        $to = mb_substr($this->to, mb_strlen($shared));
+
+        // add .. for every directory that needs to be traversed to new path
+        $to = str_repeat('../', count(array_filter(explode('/', $to))));
+
+        return $to.ltrim($path, '/');
+    }
+
+    /**
+     * Attempt to get the directory name from a path.
+     *
+     * @param string $path
+     *
+     * @return string
+     */
+    protected function dirname($path)
+    {
+        if (@is_file($path)) {
+            return dirname($path);
+        }
+
+        if (@is_dir($path)) {
+            return rtrim($path, '/');
+        }
+
+        // no known file/dir, start making assumptions
+
+        // ends in / = dir
+        if (mb_substr($path, -1) === '/') {
+            return rtrim($path, '/');
+        }
+
+        // has a dot in the name, likely a file
+        if (preg_match('/.*\..*$/', basename($path)) !== 0) {
+            return dirname($path);
+        }
+
+        // you're on your own here!
+        return $path;
+    }
+}
diff --git a/libs/path-converter/src/ConverterInterface.php b/libs/path-converter/src/ConverterInterface.php
new file mode 100755
index 00000000..dc1b7657
--- /dev/null
+++ b/libs/path-converter/src/ConverterInterface.php
@@ -0,0 +1,24 @@
+<?php
+
+namespace MatthiasMullie\PathConverter;
+
+/**
+ * Convert file paths.
+ *
+ * Please report bugs on https://github.com/matthiasmullie/path-converter/issues
+ *
+ * @author Matthias Mullie <pathconverter@mullie.eu>
+ * @copyright Copyright (c) 2015, Matthias Mullie. All rights reserved
+ * @license MIT License
+ */
+interface ConverterInterface
+{
+    /**
+     * Convert file paths.
+     *
+     * @param string $path The path to be converted
+     *
+     * @return string The new path
+     */
+    public function convert($path);
+}
diff --git a/libs/path-converter/src/NoConverter.php b/libs/path-converter/src/NoConverter.php
new file mode 100755
index 00000000..2fcfd0f2
--- /dev/null
+++ b/libs/path-converter/src/NoConverter.php
@@ -0,0 +1,23 @@
+<?php
+
+namespace MatthiasMullie\PathConverter;
+
+/**
+ * Don't convert paths.
+ *
+ * Please report bugs on https://github.com/matthiasmullie/path-converter/issues
+ *
+ * @author Matthias Mullie <pathconverter@mullie.eu>
+ * @copyright Copyright (c) 2015, Matthias Mullie. All rights reserved
+ * @license MIT License
+ */
+class NoConverter implements ConverterInterface
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function convert($path)
+    {
+        return $path;
+    }
+}