Adding upstream version 2.12.1.upstream/2.12.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 255 insertions, 0 deletions

diff --git a/library/Icinga/Web/LessCompiler.php b/library/Icinga/Web/LessCompiler.php
new file mode 100644
index 0000000..d7eda09
--- /dev/null
+++ b/library/Icinga/Web/LessCompiler.php
@@ -0,0 +1,255 @@
+<?php
+/* Icinga Web 2 | (c) 2013 Icinga Development Team | GPLv2+ */
+
+namespace Icinga\Web;
+
+use Icinga\Application\Logger;
+use Icinga\Util\LessParser;
+use Less_Exception_Parser;
+
+/**
+ * Compile LESS into CSS
+ *
+ * Comments will be removed always. lessc is messing them up.
+ */
+class LessCompiler
+{
+    /**
+     * lessphp compiler
+     *
+     * @var LessParser
+     */
+    protected $lessc;
+
+    /**
+     * Array of LESS files
+     *
+     * @var string[]
+     */
+    protected $lessFiles = array();
+
+    /**
+     * Array of module LESS files indexed by module names
+     *
+     * @var array[]
+     */
+    protected $moduleLessFiles = array();
+
+    /**
+     * LESS source
+     *
+     * @var string
+     */
+    protected $source;
+
+    /**
+     * Path of the LESS theme
+     *
+     * @var string
+     */
+    protected $theme;
+
+    /**
+     * Path of the LESS theme mode
+     *
+     * @var string
+     */
+    protected $themeMode;
+
+    /**
+     * Create a new LESS compiler
+     */
+    public function __construct()
+    {
+        $this->lessc = new LessParser();
+    }
+
+    /**
+     * Add a Web 2 LESS file
+     *
+     * @param   string  $lessFile   Path to the LESS file
+     *
+     * @return  $this
+     */
+    public function addLessFile($lessFile)
+    {
+        $this->lessFiles[] = realpath($lessFile);
+        return $this;
+    }
+
+    /**
+     * Add a module LESS file
+     *
+     * @param   string  $moduleName Name of the module
+     * @param   string  $lessFile   Path to the LESS file
+     *
+     * @return  $this
+     */
+    public function addModuleLessFile($moduleName, $lessFile)
+    {
+        if (! isset($this->moduleLessFiles[$moduleName])) {
+            $this->moduleLessFiles[$moduleName] = array();
+        }
+        $this->moduleLessFiles[$moduleName][] = realpath($lessFile);
+        return $this;
+    }
+
+    /**
+     * Get the list of LESS files added to the compiler
+     *
+     * @return string[]
+     */
+    public function getLessFiles()
+    {
+        $lessFiles = $this->lessFiles;
+
+        foreach ($this->moduleLessFiles as $moduleLessFiles) {
+            $lessFiles = array_merge($lessFiles, $moduleLessFiles);
+        }
+
+        if ($this->theme !== null) {
+            $lessFiles[] = $this->theme;
+        }
+
+        if ($this->themeMode !== null) {
+            $lessFiles[] = $this->themeMode;
+        }
+
+        return $lessFiles;
+    }
+
+    /**
+     * Set the path to the LESS theme
+     *
+     * @param   ?string  $theme  Path to the LESS theme
+     *
+     * @return  $this
+     */
+    public function setTheme($theme)
+    {
+        if ($theme === null || (is_file($theme) && is_readable($theme))) {
+            $this->theme = $theme;
+        } else {
+            Logger::error('Can\t load theme %s. Make sure that the theme exists and is readable', $theme);
+        }
+        return $this;
+    }
+
+    /**
+     * Set the path to the LESS theme mode
+     *
+     * @param   string  $themeMode  Path to the LESS theme mode
+     *
+     * @return  $this
+     */
+    public function setThemeMode($themeMode)
+    {
+        if (is_file($themeMode) && is_readable($themeMode)) {
+            $this->themeMode = $themeMode;
+        } else {
+            Logger::error('Can\t load theme mode %s. Make sure that the theme mode exists and is readable', $themeMode);
+        }
+        return $this;
+    }
+
+    /**
+     * Instruct the compiler to minify CSS
+     *
+     * @return  $this
+     */
+    public function compress()
+    {
+        $this->lessc->setFormatter('compressed');
+        return $this;
+    }
+
+    /**
+     * Render to CSS
+     *
+     * @return  string
+     */
+    public function render()
+    {
+        foreach ($this->lessFiles as $lessFile) {
+            $this->source .= file_get_contents($lessFile);
+        }
+
+        $moduleCss = '';
+        $exportedVars = [];
+        foreach ($this->moduleLessFiles as $moduleName => $moduleLessFiles) {
+            $moduleCss .= '.icinga-module.module-' . $moduleName . ' {';
+
+            foreach ($moduleLessFiles as $moduleLessFile) {
+                $content = file_get_contents($moduleLessFile);
+
+                $pattern = '/^@exports:\s*{((?:\s*@[^:}]+:[^;]*;\s+)+)};$/m';
+                if (preg_match_all($pattern, $content, $matches, PREG_SET_ORDER)) {
+                    foreach ($matches as $match) {
+                        $content = str_replace($match[0], '', $content);
+                        foreach (explode("\n", trim($match[1])) as $line) {
+                            list($name, $value) = explode(':', $line, 2);
+                            $exportedVars[trim($name)] = trim($value, ' ;');
+                        }
+                    }
+                }
+
+                $moduleCss .= $content;
+            }
+
+            $moduleCss .= '}';
+        }
+
+        $this->source .= $moduleCss;
+
+        $varExports = '';
+        foreach ($exportedVars as $name => $value) {
+            $varExports .= sprintf("%s: %s;\n", $name, $value);
+        }
+
+        // exported vars are injected at the beginning to avoid that they are
+        // able to override other variables, that's what themes are for
+        $this->source = $varExports . "\n\n" . $this->source;
+
+        if ($this->theme !== null) {
+            $this->source .= file_get_contents($this->theme);
+        }
+
+        if ($this->themeMode !== null) {
+            $this->source .= file_get_contents($this->themeMode);
+        }
+
+        try {
+            return preg_replace(
+                '/(\.icinga-module\.module-[^\s]+) (#layout\.[^\s]+)/m',
+                '\2 \1',
+                $this->lessc->compile($this->source)
+            );
+        } catch (Less_Exception_Parser $e) {
+            $excerpt = substr($this->source, $e->index - 500, 1000);
+
+            $lines = [];
+            $found = false;
+            $pos = $e->index - 500;
+            foreach (explode("\n", $excerpt) as $i => $line) {
+                if ($i === 0) {
+                    $pos += strlen($line);
+                    $lines[] = '.. ' . $line;
+                } else {
+                    $pos += strlen($line) + 1;
+                    $sep = '   ';
+                    if (! $found && $pos > $e->index) {
+                        $found = true;
+                        $sep = '!! ';
+                    }
+
+                    $lines[] = $sep . $line;
+                }
+            }
+
+            $lines[] = '..';
+            $excerpt = join("\n", $lines);
+
+            return sprintf("%s\n%s\n\n\n%s", $e->getMessage(), $e->getTraceAsString(), $excerpt);
+        }
+    }
+}