mot de passe

1 files changed, 126 insertions, 0 deletions

diff --git a/lib/HtmlFormatter.php b/lib/HtmlFormatter.php
new file mode 100644
index 0000000..89605ac
--- /dev/null
+++ b/lib/HtmlFormatter.php
@@ -0,0 +1,126 @@
+<?php
+// https://github.com/mihaeu/html-formatter
+
+namespace Mihaeu;
+
+class HtmlFormatter
+{
+    /**
+     * Formats HTML by re-indenting the tags and removing unnecessary whitespace.
+     *
+     * @param string $html HTML string.
+     * @param string $indentWith Characters that are being used for indentation (default = 4 spaces).
+     * @param string $tagsWithoutIndentation Comma-separated list of HTML tags that should not be indented (default = html,link,img,meta)
+     * @return string Re-indented HTML.
+     */
+    public static function format($html, $indentWith = '    ', $tagsWithoutIndentation = 'html,link,img,meta')
+    {
+        // replace newlines (CRLF and LF), followed by a non-whitespace character, with a space
+        $html = preg_replace('/\\r?\\n([^\s])/', ' $1', $html);
+
+        // remove all remaining line feeds and replace tabs with spaces
+        $html = str_replace(["\n", "\r", "\t"], ['', '', ' '], $html);
+        $elements = preg_split('/(<.+>)/U', $html, -1, PREG_SPLIT_NO_EMPTY | PREG_SPLIT_DELIM_CAPTURE);
+        $dom = self::parseDom($elements);
+
+        $indent = 0;
+        $output = array();
+        foreach ($dom as $index => $element)
+        {
+            if ($element['opening'])
+            {
+                $output[] = "\n".str_repeat($indentWith, $indent).trim($element['content']);
+
+                // make sure that only the elements who have not been blacklisted are being indented
+                if ( ! in_array($element['type'], explode(',', $tagsWithoutIndentation)))
+                {
+                    ++$indent;
+                }
+            }
+            else if ($element['standalone'])
+            {
+                $output[] = "\n".str_repeat($indentWith, $indent).trim($element['content']);
+            }
+            else if ($element['closing'])
+            {
+                --$indent;
+                $lf = "\n".str_repeat($indentWith, abs($indent));
+                if (isset($dom[$index - 1]) && $dom[$index - 1]['opening'])
+                {
+                    $lf = '';
+                }
+                $output[] = $lf.trim($element['content']);
+            }
+            else if ($element['text'])
+            {
+                // $output[] = "\n".str_repeat($indentWith, $indent).trim($element['content']);
+                $output[] = "\n".str_repeat($indentWith, $indent).preg_replace('/ [ \t]*/', ' ', $element['content']);
+            }
+            else if ($element['comment'])
+            {
+                $output[] = "\n".str_repeat($indentWith, $indent).trim($element['content']);
+            }
+        }
+
+        return trim(implode('', $output));
+    }
+
+    /**
+     * Parses an array of HTML tokens and adds basic information about about the type of 
+     * tag the token represents.
+     *
+     * @param Array $elements Array of HTML tokens (tags and text tokens).
+     * @return Array HTML elements with extra information.
+     */
+    public static function parseDom(Array $elements)
+    {
+        $dom = array();
+        foreach ($elements as $element)
+        {
+            $isText = false;
+            $isComment = false;
+            $isClosing = false;
+            $isOpening = false;
+            $isStandalone = false;
+
+            $currentElement = trim($element);
+
+            // comment
+            if (strpos($currentElement, '<!') === 0)
+            {
+                $isComment = true;
+            }
+            // closing tag
+            else if (strpos($currentElement, '</') === 0)
+            {
+                $isClosing = true;
+            }
+            // stand-alone tag
+            else if (preg_match('/\/>$/', $currentElement))
+            {
+                $isStandalone = true;
+            }
+            // normal opening tag
+            else if (strpos($currentElement, '<') === 0)
+            {
+                $isOpening = true;
+            }
+            // text
+            else
+            {
+                $isText = true;
+            }
+
+            $dom[] = array(
+                'text'              => $isText,
+                'comment'           => $isComment,
+                'closing'           => $isClosing,
+                'opening'           => $isOpening,
+                'standalone'        => $isStandalone,
+                'content'           => $element,
+                'type'              => preg_replace('/^<\/?(\w+)[ >].*$/U', '$1', $element)
+            );
+        }
+        return $dom;
+    }
+}