Issue #3002872 Support to add styles and scripts in head tag

.gitignore

@@ -0,0 +1,10 @@
+# folders and files to be ignored by git
+
+############
+## OSes
+############
+
+[Tt]humbs.db
+[Dd]esktop.ini
+*.DS_store
+.DS_store?

header_and_footer_scripts.install

@@ -15,4 +15,7 @@ function header_and_footer_scripts_uninstall() {
   \Drupal::service('config.factory')
     ->getEditable('hfs_footer_scripts.settings')
     ->delete();
+  \Drupal::service('config.factory')
+    ->getEditable('hfs_header_scripts.settings')
+    ->delete();
 }

header_and_footer_scripts.links.task.yml

@@ -1,3 +1,7 @@
+hfs.admin.header_settings:
+  route_name: hfs.admin.header_settings
+  title: 'Header Scripts'
+  base_route: hfs.admin.body_settings
 hfs.admin.body_settings:
   route_name: hfs.admin.body_settings
   title: 'Body Scripts'

header_and_footer_scripts.module

@@ -256,3 +256,135 @@ function header_and_footer_scripts_page_bottom(array &$page_bottom) {
     }
   }
 }
+
+/**
+ * Implements hook_page_attachments_alter().
+ *
+ * Alter CSS/JS files before they are output on the page.
+ * which are defined on the settings page.
+ */
+function header_and_footer_scripts_page_attachments_alter(array &$attachments) {
+  $header_section = \Drupal::config('hfs_header_scripts.settings')->get();
+  if (isset($header_section['styles']) && !empty($header_section['styles'])) {
+    $output_styles = preg_split("/(<\/style>|\/>)/", $header_section['styles']);
+    $i = 1;
+	  $i = count($attachments['#attached']['html_head']) + 1;
+    foreach ($output_styles as $row) {
+      if (empty($row)) {
+        continue;
+      }
+
+      $style_tag  = 'style';
+      $style_attr = '';
+      $value      = '';
+
+      $style_attributes = preg_replace('/(<style|<link)/', '', $row, 1);
+      $get_style_attr   = preg_split('/(>)/', $style_attributes, 2);
+
+      if (isset($get_style_attr[1])) {
+        $value = $get_style_attr[1];
+      }
+
+      $get_style_tag = preg_split('/<link/', $row, 2);
+
+      if (isset($get_style_tag[1])) {
+        $style_tag = 'link';
+      }
+
+      if (isset($get_style_attr[0]) && !empty($get_style_attr[0])) {
+        $get_attr   = preg_replace('/(\'|\")/', '', $get_style_attr[0]);
+        $get_attr   = preg_replace('/\s+/', ',', $get_attr);
+        $get_attr   = preg_replace('/(,=,|,=|=,)/', '=', $get_attr);
+        $fetch_attr = explode(',', $get_attr);
+
+        foreach ($fetch_attr as $attr) {
+          if (empty($attr)) {
+            continue;
+          }
+
+          $attr_key_value = explode('=', $attr);
+          if (isset($attr_key_value[0]) && isset($attr_key_value[1])) {
+            $style_attr[$attr_key_value[0]] = $attr_key_value[1];
+          }
+          else {
+            $style_attr[$attr_key_value[0]] = $attr_key_value[0];
+          }
+        }
+      }
+
+      $attachments['#attached']['html_head'][$i][0] = array(
+        '#type'  => 'html_tag',
+        '#tag'   => $style_tag,
+        '#value' => $value
+      );
+      if (is_array($style_attr)) {
+        $attachments['#attached']['html_head'][$i][0]['#attributes'] = $style_attr;
+      }
+	    $attachments['#attached']['html_head'][$i][1] = 'header-and-footer-css-' . $i;
+		
+      $i++;
+    }
+  }
+  if (isset($header_section['scripts']) && !empty($header_section['scripts'])) {
+    $output_scripts = preg_split("/(<\/script>|<\/noscript>)/", $header_section['scripts']);
+    $i = 1;
+	  $i = count($attachments['#attached']['html_head']) +1;
+    foreach ($output_scripts as $row) {
+
+      if (empty($row)) {
+        continue;
+      }
+
+      $script_tag  = 'script';
+      $script_attr = '';
+      $value       = '';
+
+      $script_attributes = preg_replace('/(<script|<noscript)/', '', $row, 1);
+      $get_script_attr   = preg_split('/(>)/', $script_attributes, 2);
+
+      if (isset($get_script_attr[1])) {
+        $value = $get_script_attr[1];
+      }
+
+      $get_script_tag = preg_split('/<noscript/', $row, 2);
+
+      if (isset($get_script_tag[1])) {
+        $script_tag = 'noscript';
+      }
+
+      if (isset($get_script_attr[0]) && !empty($get_script_attr[0])) {
+        $get_attr   = preg_replace('/(\'|\")/', '', $get_script_attr[0]);
+        $get_attr   = preg_replace('/\s+/', ',', $get_attr);
+        $get_attr   = preg_replace('/(,=,|,=|=,)/', '=', $get_attr);
+        $fetch_attr = explode(',', $get_attr);
+
+        foreach ($fetch_attr as $attr) {
+          if (empty($attr)) {
+            continue;
+          }
+
+          $attr_key_value = explode('=', $attr);
+          if (isset($attr_key_value[0]) && isset($attr_key_value[1])) {
+            $script_attr[$attr_key_value[0]] = $attr_key_value[1];
+          }
+          else {
+            $script_attr[$attr_key_value[0]] = $attr_key_value[0];
+          }
+        }
+      }
+
+      $attachments['#attached']['html_head'][$i] = array(
+        array(
+          '#type'  => 'html_tag',
+          '#tag'   => $script_tag,
+          '#value' => $value,
+        ),
+        'header-and-footer-scripts-' . $i
+      );
+      if (is_array($script_attr)) {
+        $attachments['#attached']['html_head'][$i][0]['#attributes'] = $script_attr;
+      }
+      $i++;
+    }
+  }
+}

header_and_footer_scripts.routing.yml

@@ -1,8 +1,15 @@
+hfs.admin.header_settings:
+  path: '/admin/config/development/hfs/header'
+  defaults:
+    _form: '\Drupal\header_and_footer_scripts\Form\HeaderForm'
+    _title: 'HFS (Header Footer Scripts)'
+  requirements:
+    _permission: 'header_and_footer_scripts_settings'
 hfs.admin.body_settings:
   path: '/admin/config/development/hfs/body'
   defaults:
     _form: '\Drupal\header_and_footer_scripts\Form\BodyForm'
-    _title: 'HFS (Header Footer Scripts)'
+    _title: 'HFS (Header Footer Scripts) for Body'
   requirements:
     _permission: 'header_and_footer_scripts_settings'
 hfs.admin.footer_settings:

src/Form/HeaderForm.php

@@ -0,0 +1,76 @@
+<?php
+
+namespace Drupal\header_and_footer_scripts\Form;
+
+use Drupal\Core\Form\ConfigFormBase;
+use Symfony\Component\HttpFoundation\Request;
+use Drupal\Core\Form\FormStateInterface;
+
+/**
+ * Provide settings page for adding CSS/JS before the end of body tag.
+ */
+class HeaderForm extends ConfigFormBase {
+
+  /**
+   * Implements FormBuilder::getFormId.
+   */
+  public function getFormId() {
+    return 'hfs_header_settings';
+  }
+
+  /**
+   * Implements ConfigFormBase::getEditableConfigNames.
+   */
+  protected function getEditableConfigNames() {
+    return ['hfs_header_scripts.settings'];
+  }
+
+  /**
+   * Implements FormBuilder::buildForm.
+   */
+  public function buildForm(array $form, FormStateInterface $form_state, Request $request = NULL) {
+    $header_section = $this->config('hfs_header_scripts.settings')->get();
+
+    $form['hfs_header'] = [
+      '#type'        => 'fieldset',
+      '#title'       => $this->t('Add Scripts and Styles in Header'),
+      '#description' => $this->t('All the defined scripts and styles in this section would be added just before closing the <strong>body</strong> tag.'),
+    ];
+
+    $form['hfs_header']['styles'] = [
+      '#type'          => 'textarea',
+      '#title'         => $this->t('Header Styles'),
+      '#default_value' => isset($header_section['styles']) ? $header_section['styles'] : '',
+      '#description'   => $this->t('<p>You can add multiple <strong>stylesheets</strong> here with multiple ways, For example: </p><p>1. &lt;link type="text/css" rel="stylesheet" href="http://www.example.com/style.css" media="all" /&gt;</p><p> 2. &lt;link type="text/css" rel="stylesheet" href="/style.css" media="all" /&gt;</p><p> 3. &lt;style&gt;#header { color: grey; }&lt;/style&gt;</p>'),
+      '#rows'          => 10,
+    ];
+
+    $form['hfs_header']['scripts'] = [
+      '#type'          => 'textarea',
+      '#title'         => $this->t('Header Scripts'),
+      '#default_value' => isset($header_section['scripts']) ? $header_section['scripts'] : '',
+      '#description'   => $this->t('<p>You can add multiple <strong>scripts</strong> here with multiple ways, For example: </p><p>1. &lt;script type="text/javascript" src="http://www.example.com/script.js"&gt;&lt;/script&gt;</p><p> 2. &lt;script type="text/javascript" src="/script.js"&gt;&lt;/script&gt;</p><p> 3. &lt;script type="text/javascript"&gt;console.log("HFS Header");&lt;/script&gt;</p>'),
+      '#rows'          => 10,
+    ];
+
+    return parent::buildForm($form, $form_state);
+  }
+
+  /**
+   * Implements FormBuilder::submitForm().
+   *
+   * Serialize the user's settings and save it to the Drupal's config Table.
+   */
+  public function submitForm(array &$form, FormStateInterface $form_state) {
+    $values = $form_state->getValues();
+
+    $this->configFactory()
+      ->getEditable('hfs_header_scripts.settings')
+      ->set('styles', $values['styles'])
+      ->set('scripts', $values['scripts'])
+      ->save();
+
+    drupal_set_message($this->t('Your Settings have been saved.'), 'status');
+  }
+
+}