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<?php
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// $Id$
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/**
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* @file
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* Provides file attachment functionality for comments.
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*
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* Written by Heine Deelstra. Copyright (c) 2008 by Ustima (http://ustima.com). All rights reserved.
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*
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* This module is licensed under GPL v2. See LICENSE.txt for more information.
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*/
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/**
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* @todo private file system support.
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* @todo Single file attachments.
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* @todo Inline images.
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* @todo React to content type changes
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*/
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/**
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* Implementation of hook_menu().
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*/
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function comment_upload_menu() {
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$items = array();
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$items['comment-upload/js'] = array(
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'type' => MENU_CALLBACK,
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'page callback' => 'comment_upload_js',
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'access arguments' => array('upload files to comments'),
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);
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return $items;
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}
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/**
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* Implementation of hook_perm().
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*/
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function comment_upload_perm() {
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return array('upload files to comments');
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}
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function comment_upload_theme() {
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return array(
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'comment_upload_attachments' => array(
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'arguments' => array('files' => NULL),
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),
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'comment_upload_form_current' => array(
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'arguments' => array('form' => NULL),
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),
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'comment_upload_form_new' => array(
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'arguments' => array('form' => NULL),
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),
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);
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}
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/**
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* Add an Attachments for comments setting to the content type settings forms.
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*
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* Implementation of hook_form_alter().
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*/
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function comment_upload_form_alter(&$form, $form_state, $form_id) {
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if ($form_id == 'node_type_form' && isset($form['identity']['type'])) {
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$form['comment']['comment_upload'] = array(
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'#type' => 'radios',
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'#title' => t('Attachments on comments'),
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'#default_value' => variable_get('comment_upload_'. $form['#node_type']->type, 1),
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'#options' => array(t('Disabled'), t('Enabled')), '#weight' => 20,
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);
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}
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}
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/**
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* Hook into the comment_form to support file uploads.
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*
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* Implementation of hook_form_form-id_alter().
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*/
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function comment_upload_form_comment_form_alter(&$form, &$form_state) {
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if (!user_access('upload files to comments')) {
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return;
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}
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// Check whether attachments are enabled for comments on this content type.
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$node = node_load($form['nid']['#value']);
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if (!variable_get('comment_upload_'. $node->type, 0)) {
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return;
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}
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$files = array();
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$cid = $form['cid']['#value'];
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// Rebuild indicates whether we have a pristine form (FALSE) or one that has been trough validation -> submission once.
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if (empty($form_state['rebuild'])) {
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if ($cid) {
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// Attempt to load files for an existing comment.
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$files = comment_upload_load_files($cid);
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}
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$form_state['storage']['comment_upload_files'] = $files;
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}
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else {
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// Using the Attach button without JS does not generate a preview.
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// Rape the comment form.
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// Comment_form was not build to rebuild a form an fetch values from $form_state.
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// To preserve changes made by the user, we build the part of the form we just received,
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// mapping $_POST values to #default_values.
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// Because rebuild is TRUE, $_POST has been validated. Nevertheless this is insane.
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$form['#post'] = $_POST;
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unset($form['#post']['op']);
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$build_form = form_builder('comment_form', $form, $state);
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comment_upload_value_to_default($build_form, $form);
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if (isset($form_state['values']['files'])) {
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$files = $form_state['values']['files'];
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}
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}
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$form['attachments'] = array(
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'#type' => 'fieldset',
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'#access' => user_access('upload files'), // TODO: Change perm.
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'#title' => t('File attachments'),
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'#collapsible' => TRUE,
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'#collapsed' => count($files) == 0,
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'#description' => t('Changes made to the attachments are not permanent until you save this post. The first "listed" file will be included in RSS feeds.'),
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'#prefix' => '<div class="attachments">',
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'#suffix' => '</div>',
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);
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// Wrapper for fieldset contents (used by ahah.js).
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$form['attachments']['wrapper'] = array(
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'#prefix' => '<div id="attach-wrapper">',
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'#suffix' => '</div>',
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);
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$form['attachments']['wrapper'] += comment_upload_upload_form($files);
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$form['#attributes']['enctype'] = 'multipart/form-data';
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$form['store_file_information'] = array(
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'#type' => 'value',
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'#value' => $files,
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);
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// Comment_form dynamically adds buttons such as preview / save in the
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// formbuilder. As the attachment fieldset contains an AHAH element, the
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// #cache property of the form will be set to TRUE and the formbuilder will
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// no longer be called. Therefore, comment_upload needs to implement preview
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// functionality as well.
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$form['preview'] = array(
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'#type' => 'submit',
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'#value' => t('Preview'),
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'#submit' => array('comment_upload_comment_form_intermittent_submit'),
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'#weight' => 20,
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);
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$form['#submit'] = array('comment_upload_comment_form_submit', 'comment_form_submit');
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}
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/*
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* Listen to node deletion and delete files from comments on that node.
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*
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* (comment_nodeapi does not call comment APIs when deleting).
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*
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* Implementation of hook_nodeapi().
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*/
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function comment_upload_nodeapi(&$node, $op, $arg = 0) {
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if ($op == 'delete') {
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$result = db_query("SELECT fid, nid, filepath FROM {comment_upload} cu INNER JOIN {files} f ON cu.fid = f.fid WHERE cu.nid = %d", $node->nid);
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while ($row = db_fetch_array($result)) {
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// comment_upload_delete_file just needs a filepath and a fid.
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comment_upload_delete_file($row);
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}
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}
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}
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/**
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* Traverse a build form and #value to corresponding #default_values in an unbuild form.
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*
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* @param array $build_form
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* @param array $form
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*/
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function comment_upload_value_to_default($build_form, &$form) {
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if (!is_array($build_form)) {
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return;
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}
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foreach (element_children($build_form) as $key) {
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if (isset($form[$key]) && isset($build_form[$key]['#value'])) {
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$form[$key]['#default_value'] = $build_form[$key]['#value'];
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}
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comment_upload_value_to_default($build_form[$key], $form[$key]);
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}
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}
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/**
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* Build the section of the upload_form that holds the attachments table and upload element.
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*
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* @param array $files
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* @return array
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*/
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function comment_upload_upload_form($files = array()) {
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$form = array('#theme' => 'comment_upload_form_new');
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if (!empty($files) && is_array($files)) {
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$count = count($files);
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$form['files']['#theme'] = 'comment_upload_form_current';
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$form['files']['#tree'] = TRUE;
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foreach ($files as $key => $file) {
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$file = (object) $file;
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$form['files'][$key] = comment_upload_create_file_element($file, $count);
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}
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}
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$limits = _upload_file_limits($GLOBALS['user']);
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$form['new']['upload'] = array(
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'#type' => 'file',
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'#title' => t('Attach new file'),
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'#size' => 40,
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'#description' => ($limits['resolution'] ? t('Images are larger than %resolution will be resized. ', array('%resolution' => $limits['resolution'])) : '') . t('The maximum upload size is %filesize. Only files with the following extensions may be uploaded: %extensions. ', array('%extensions' => $limits['extensions'], '%filesize' => format_size($limits['file_size']))),
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);
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$form['new']['attach'] = array(
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'#type' => 'submit',
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'#value' => t('Attach'),
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'#name' => 'attach',
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'#ahah' => array(
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'path' => 'comment-upload/js',
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'wrapper' => 'attach-wrapper',
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'progress' => array('type' => 'bar', 'message' => t('Please wait...')),
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),
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'#submit' => array('comment_upload_comment_form_attach_submit'),
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);
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return $form;
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}
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/**
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* Create the form elements for one file in the attachments table.
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*
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* @param object $file
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* @param integer $count
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* @return array
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*/
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function comment_upload_create_file_element($file, $count) {
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$element = array();
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$description = "<small>". check_plain(file_create_url($file->filepath)) ."</small>";
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$element['description'] = array('#type' => 'textfield', '#default_value' => !empty($file->description) ? $file->description : $file->filename, '#maxlength' => 256, '#description' => $description );
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$element['size'] = array('#value' => format_size($file->filesize));
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$element['remove'] = array('#type' => 'checkbox', '#default_value' => !empty($file->remove));
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$element['list'] = array('#type' => 'checkbox', '#default_value' => $file->list);
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$element['weight'] = array('#type' => 'weight', '#delta' => $count, '#default_value' => $file->weight);
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$element['filename'] = array('#type' => 'value', '#value' => $file->filename);
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$element['filepath'] = array('#type' => 'value', '#value' => $file->filepath);
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$element['filemime'] = array('#type' => 'value', '#value' => $file->filemime);
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$element['filesize'] = array('#type' => 'value', '#value' => $file->filesize);
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$element['fid'] = array('#type' => 'value', '#value' => $file->fid);
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$element['new'] = array('#type' => 'value', '#value' => FALSE);
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return $element;
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}
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/**
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* Implementation of hook_comment().
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*/
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function comment_upload_comment(&$a1, $op) {
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switch ($op) {
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case 'insert':
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case 'update':
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comment_upload_save($a1);
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break;
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case 'delete':
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comment_upload_comment_delete($a1);
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break;
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case 'view':
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comment_upload_comment_view($a1);
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break;
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}
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}
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/**
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* Remove files when the comment is deleted.
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*
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* @param object $comment
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*/
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function comment_upload_comment_delete($comment) {
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$files = comment_upload_load_files($comment->cid);
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if (!empty($files)) {
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foreach ($files as $fid => $file) {
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comment_upload_delete_file($file);
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}
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}
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}
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/**
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* Add attachments to the comment on view or preview.
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*
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* @param object $comment
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*/
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function comment_upload_comment_view(&$comment) {
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| 305 |
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| 306 |
if (isset($comment->files)) {
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$files = $comment->files;
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}
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else {
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$files = comment_upload_load_files($comment->cid);
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}
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if (isset($files) && count($files)) {
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$comment->comment .= theme('comment_upload_attachments', $files);
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}
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}
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/**
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* Save the changes made to attachments.
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*
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* @param array $comment
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*/
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function comment_upload_save($comment) {
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| 324 |
if (!user_access('upload files to comments')) {
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return;
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}
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| 328 |
if (!isset($comment['files']) || !is_array($comment['files'])) {
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return;
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}
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| 332 |
foreach ($comment['files'] as $fid => $file) {
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| 333 |
if (!empty($file['remove'])) {
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comment_upload_delete_file($file);
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}
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// Later: make this nicer: add a 'new' flag for new files.
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if (!empty($file['new'])) {
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db_query("INSERT INTO {comment_upload} (fid, cid, nid, list, description, weight) VALUES (%d, %d, %d, %d, '%s', %d)", $fid, $comment['cid'], $comment['nid'], $file['list'], $file['description'], $file['weight']);
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$file = (object)$file;
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file_set_status($file, FILE_STATUS_PERMANENT);
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}
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else {
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db_query("UPDATE {comment_upload} SET list = %d, description = '%s', weight = %d WHERE fid = %d", $file['list'], $file['description'], $file['weight'], $fid);
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}
|
| 348 |
}
|
| 349 |
}
|
| 350 |
|
| 351 |
/**
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| 352 |
* React to the Attach button; update file information on AHAH request.
|
| 353 |
*
|
| 354 |
*/
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| 355 |
function comment_upload_js() {
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$cached_form_state = array();
|
| 357 |
|
| 358 |
if (!$stored_form = form_get_cache($_POST['form_build_id'], $cached_form_state)) {
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| 359 |
exit();
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| 360 |
}
|
| 361 |
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| 362 |
$form_state = array('values' => $_POST, 'storage' => $cached_form_state['storage']);
|
| 363 |
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| 364 |
comment_upload_process_files($stored_form, $form_state);
|
| 365 |
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| 366 |
foreach ($form_state['values']['files'] as $fid => $file) {
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| 367 |
$files[$fid] = $form_state['storage']['comment_upload_files'][$fid];
|
| 368 |
}
|
| 369 |
|
| 370 |
$upload_form = comment_upload_upload_form($files);
|
| 371 |
|
| 372 |
$stored_form['attachments']['wrapper'] = array_merge($stored_form['attachments']['wrapper'], $upload_form);
|
| 373 |
$cached_form_state['storage']['comment_upload_files'] = $form_state['storage']['comment_upload_files'];
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| 374 |
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| 375 |
form_set_cache($_POST['form_build_id'], $stored_form, $cached_form_state);
|
| 376 |
|
| 377 |
foreach ($files as $fid => $file) {
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| 378 |
if (is_numeric($fid)) {
|
| 379 |
$upload_form['files'][$fid]['description']['#default_value'] = $form_state['values']['files'][$fid]['description'];
|
| 380 |
$upload_form['files'][$fid]['list']['#default_value'] = isset($form_state['values']['files'][$fid]['list']) ? 1 : 0;
|
| 381 |
$upload_form['files'][$fid]['remove']['#default_value'] = isset($form_state['values']['files'][$fid]['remove']) ? 1 : 0;
|
| 382 |
$upload_form['files'][$fid]['weight']['#default_value'] = $form_state['values']['files'][$fid]['weight'];
|
| 383 |
}
|
| 384 |
}
|
| 385 |
|
| 386 |
// Render the form for output.
|
| 387 |
$upload_form += array(
|
| 388 |
'#post' => $_POST,
|
| 389 |
'#programmed' => FALSE,
|
| 390 |
'#tree' => FALSE,
|
| 391 |
'#parents' => array(),
|
| 392 |
);
|
| 393 |
|
| 394 |
drupal_alter('form', $upload_form, array(), 'comment_upload_js');
|
| 395 |
|
| 396 |
$form_state = array('submitted' => FALSE);
|
| 397 |
|
| 398 |
$build_form = form_builder('comment_upload_js', $upload_form, $form_state);
|
| 399 |
$output = theme('status_messages') . drupal_render($build_form);
|
| 400 |
|
| 401 |
// We send the updated file attachments form.
|
| 402 |
// Don't call drupal_json(). ahah.js uses an iframe and
|
| 403 |
// the header output by drupal_json() causes problems in some browsers.
|
| 404 |
print drupal_to_js(array('status' => TRUE, 'data' => $output));
|
| 405 |
exit();
|
| 406 |
}
|
| 407 |
|
| 408 |
/**
|
| 409 |
* Process file uploads.
|
| 410 |
*
|
| 411 |
* @param array $form
|
| 412 |
* @param array $form_state
|
| 413 |
*/
|
| 414 |
function comment_upload_process_files($form, &$form_state) {
|
| 415 |
|
| 416 |
$limits = _upload_file_limits($GLOBALS['user']);
|
| 417 |
$validators = array(
|
| 418 |
'file_validate_extensions' => array($limits['extensions']),
|
| 419 |
'file_validate_image_resolution' => array($limits['resolution']),
|
| 420 |
'file_validate_size' => array($limits['file_size'], $limits['user_size']),
|
| 421 |
);
|
| 422 |
|
| 423 |
// Save new file uploads.
|
| 424 |
if (user_access('upload files to comments') && ($file = file_save_upload('upload', $validators, file_directory_path()))) {
|
| 425 |
$file->list = variable_get('upload_list_default', 1);
|
| 426 |
$file->description = $file->filename;
|
| 427 |
$file->weight = 0;
|
| 428 |
if (!isset($form_state['values']['files'][$file->fid]['filepath'])) {
|
| 429 |
$form_state['values']['files'][$file->fid] = (array)$file;
|
| 430 |
$file->new = TRUE;
|
| 431 |
$form_state['storage']['comment_upload_files'][$file->fid] = (array) $file;
|
| 432 |
}
|
| 433 |
}
|
| 434 |
else {
|
| 435 |
// If no file has been entered, we have an upload element in files.
|
| 436 |
unset($form_state['values']['files']['upload']);
|
| 437 |
}
|
| 438 |
|
| 439 |
if (isset($form_state['values']['files'])) {
|
| 440 |
foreach ($form_state['values']['files'] as $fid => $file) {
|
| 441 |
$form_state['values']['files'][$fid]['new'] = !empty($form_state['storage']['comment_upload_files'][$fid]['new']) ? TRUE : FALSE;
|
| 442 |
}
|
| 443 |
}
|
| 444 |
|
| 445 |
// Order the form according to the set file weight values.
|
| 446 |
if (!empty($form_state['values']['files'])) {
|
| 447 |
$microweight = 0.001;
|
| 448 |
foreach ($form_state['values']['files'] as $fid => $file) {
|
| 449 |
if (is_numeric($fid)) {
|
| 450 |
$form_state['values']['files'][$fid]['#weight'] = $file['weight'] + $microweight;
|
| 451 |
$microweight += 0.001;
|
| 452 |
}
|
| 453 |
}
|
| 454 |
uasort($form_state['values']['files'], 'element_sort');
|
| 455 |
}
|
| 456 |
|
| 457 |
}
|
| 458 |
|
| 459 |
/**
|
| 460 |
* Additional submit handler for the comment form.
|
| 461 |
*
|
| 462 |
* @param array $form
|
| 463 |
* @param array $form_state
|
| 464 |
*/
|
| 465 |
function comment_upload_comment_form_submit($form, &$form_state) {
|
| 466 |
comment_upload_process_files($form, $form_state);
|
| 467 |
unset($form_state['storage']);
|
| 468 |
}
|
| 469 |
|
| 470 |
/**
|
| 471 |
* Submit handler for the preview and attach button.
|
| 472 |
*
|
| 473 |
* @param array $form
|
| 474 |
* @param array $form_state
|
| 475 |
*/
|
| 476 |
function comment_upload_comment_form_intermittent_submit($form, &$form_state) {
|
| 477 |
comment_upload_process_files($form, $form_state);
|
| 478 |
$form_state['rebuild'] = TRUE;
|
| 479 |
return;
|
| 480 |
}
|
| 481 |
|
| 482 |
|
| 483 |
/**
|
| 484 |
* Theme the attachments list.
|
| 485 |
*
|
| 486 |
* Taken from upload.module.
|
| 487 |
*
|
| 488 |
* @ingroup themeable
|
| 489 |
*/
|
| 490 |
function theme_comment_upload_form_current(&$form) {
|
| 491 |
$header = array('', t('Delete'), t('List'), t('Description'), t('Weight'), t('Size'));
|
| 492 |
drupal_add_tabledrag('comment-upload-attachments', 'order', 'sibling', 'comment-upload-weight');
|
| 493 |
|
| 494 |
foreach (element_children($form) as $key) {
|
| 495 |
// Add class to group weight fields for drag and drop.
|
| 496 |
$form[$key]['weight']['#attributes']['class'] = 'comment-upload-weight';
|
| 497 |
|
| 498 |
$row = array('');
|
| 499 |
$row[] = drupal_render($form[$key]['remove']);
|
| 500 |
$row[] = drupal_render($form[$key]['list']);
|
| 501 |
$row[] = drupal_render($form[$key]['description']);
|
| 502 |
$row[] = drupal_render($form[$key]['weight']);
|
| 503 |
$row[] = drupal_render($form[$key]['size']);
|
| 504 |
$rows[] = array('data' => $row, 'class' => 'draggable');
|
| 505 |
}
|
| 506 |
$output = theme('table', $header, $rows, array('id' => 'comment-upload-attachments'));
|
| 507 |
$output .= drupal_render($form);
|
| 508 |
return $output;
|
| 509 |
}
|
| 510 |
|
| 511 |
function theme_comment_upload_form_new($form) {
|
| 512 |
drupal_add_tabledrag('comment=upload-attachments', 'order', 'sibling', 'comment-upload-weight');
|
| 513 |
$output = drupal_render($form);
|
| 514 |
return $output;
|
| 515 |
}
|
| 516 |
|
| 517 |
function theme_comment_upload_attachments($files) {
|
| 518 |
$header = array(t('Attachment'), t('Size'));
|
| 519 |
$rows = array();
|
| 520 |
|
| 521 |
foreach ($files as $file) {
|
| 522 |
$file = (object)$file;
|
| 523 |
if ($file->list && empty($file->remove)) {
|
| 524 |
$href = file_create_url($file->filepath);
|
| 525 |
$text = $file->description ? $file->description : $file->filename;
|
| 526 |
$rows[] = array(l($text, $href), format_size($file->filesize));
|
| 527 |
}
|
| 528 |
}
|
| 529 |
if (count($rows)) {
|
| 530 |
return theme('table', $header, $rows, array('id' => 'attachments'));
|
| 531 |
}
|
| 532 |
}
|
| 533 |
|
| 534 |
/**
|
| 535 |
* Load attachments that belong to the comment.
|
| 536 |
*
|
| 537 |
* @param integer $cid
|
| 538 |
* @return array
|
| 539 |
*/
|
| 540 |
function comment_upload_load_files($cid) {
|
| 541 |
$files = array();
|
| 542 |
|
| 543 |
$result = db_query('SELECT * FROM {files} f INNER JOIN {comment_upload} cu ON f.fid = cu.fid WHERE cu.cid = %d ORDER BY cu.weight, f.fid', $cid);
|
| 544 |
while ($file = db_fetch_array($result)) {
|
| 545 |
$files[$file['fid']] = $file;
|
| 546 |
}
|
| 547 |
return $files;
|
| 548 |
}
|
| 549 |
|
| 550 |
/**
|
| 551 |
* Delete a file and its associated records.
|
| 552 |
*
|
| 553 |
* @param array $file
|
| 554 |
*/
|
| 555 |
function comment_upload_delete_file($file) {
|
| 556 |
file_delete($file['filepath']);
|
| 557 |
db_query('DELETE FROM {files} WHERE fid = %d', $file['fid']);
|
| 558 |
db_query("DELETE FROM {comment_upload} WHERE fid = %d", $file['fid']);
|
| 559 |
}
|
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