first import

sites/all/modules/diff/includes/file.inc

@@ -0,0 +1,111 @@
+<?php
+
+/**
+ * @file
+ * Provide diff field functions for the file module.
+ */
+
+/**
+ * Diff field callback for preloading file entities.
+ */
+function file_field_diff_view_prepare(&$old_items, &$new_items, $context) {
+  $fids = array();
+  foreach (array_merge_recursive($old_items, $new_items) as $info) {
+    $fids[$info['fid']] = $info['fid'];
+  }
+  $files = file_load_multiple($fids);
+
+  foreach ($old_items as $delta => $info) {
+    $old_items[$delta]['file'] = isset($files[$info['fid']]) ? $files[$info['fid']] : NULL;
+  }
+  foreach ($new_items as $delta => $info) {
+    $new_items[$delta]['file'] = isset($files[$info['fid']]) ? $files[$info['fid']] : NULL;
+  }
+}
+
+/**
+ * Diff field callback for parsing file field comparative values.
+ */
+function file_field_diff_view($items, $context) {
+  $field = $context['field'];
+  $instance = $context['instance'];
+  $settings = $context['settings'];
+
+  $diff_items = array();
+  foreach ($items as $delta => $item) {
+    if (isset($item['file'])) {
+      $output = array();
+
+      // We populate as much as possible to allow the best flexability in any
+      // string overrides.
+      $t_args = array();
+      foreach ($item as $key => $value) {
+        if (is_scalar($value)) {
+          $t_args['!' . $key] = $value;
+        }
+      }
+      // Some states do not have the file properties in the item, so put these
+      // out of the main file object.
+      if (!empty($item['file'])) {
+        $file_values = (array) $item['file'];
+        foreach ($file_values as $key => $value) {
+          if (is_scalar($value) && !isset($t_args['!' . $key])) {
+            $t_args['!' . $key] = $value;
+          }
+        }
+      }
+
+      $output['file'] = t('File: !filename', $t_args);
+      if ($settings['compare_description_field'] && !empty($instance['settings']['description_field'])) {
+        if (!empty($item['description'])) {
+          $output['description'] = t('Description: !description', $t_args);
+        }
+      }
+      if ($settings['show_id']) {
+        $output['fid'] = t('File ID: !fid', $t_args);
+      }
+      if ($settings['compare_display_field'] && !empty($field['settings']['display_field'])) {
+        $output['display'] = $item['display'] ? t('Displayed') : t('Hidden');
+      }
+      $diff_items[$delta] = implode('; ', $output);
+    }
+  }
+
+  return $diff_items;
+}
+
+/**
+ * Provide default field comparison options.
+ */
+function file_field_diff_default_options($field_type) {
+  return array(
+    'show_id' => 0,
+    'compare_display_field' => 0,
+    'compare_description_field' => 0,
+  );
+}
+
+/**
+ * Provide a form for setting the field comparison options.
+ */
+function file_field_diff_options_form($field_type, $settings) {
+  $options_form = array();
+  $options_form['show_id'] = array(
+    '#type' => 'checkbox',
+    '#title' => t('Show file ID'),
+    '#default_value' => $settings['show_id'],
+  );
+  $options_form['compare_description_field'] = array(
+    '#type' => 'checkbox',
+    '#title' => t('Compare description field'),
+    '#default_value' => $settings['compare_description_field'],
+    '#description' => t('This is only used if the "Enable <em>Description</em> field" is checked in the instance settings.'),
+  );
+  $options_form['compare_display_field'] = array(
+    '#type' => 'checkbox',
+    '#title' => t('Compare display state field'),
+    '#default_value' => $settings['compare_display_field'],
+    '#description' => t('This is only used if the "Enable <em>Display</em> field" is checked in the field settings.'),
+  );
+  return $options_form;
+}