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<?php
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/**
* @file
* Displays Printer-friendly versions of Drupal pages.
*
* This is the core module of the PF package, with the Drupal hooks
* and other administrative functions.
define('PRINT_LOGO_OPTIONS_DEFAULT', 1);
define('PRINT_LOGO_URL_DEFAULT', '');
define('PRINT_FOOTER_OPTIONS_DEFAULT', 1);
define('PRINT_FOOTER_USER_DEFAULT', '');
define('PRINT_CSS_DEFAULT', '');
define('PRINT_URLS_DEFAULT', 1);
define('PRINT_COMMENTS_DEFAULT', 0);
define('PRINT_NEWWINDOW_DEFAULT', 1);
define('PRINT_HTML_LINK_POS_DEFAULT', 'link');
define('PRINT_HTML_SHOW_LINK_DEFAULT', 1);
define('PRINT_HTML_NODE_LINK_VISIBILITY_DEFAULT', 0);
define('PRINT_HTML_NODE_LINK_PAGES_DEFAULT', '');
define('PRINT_HTML_LINK_CLASS_DEFAULT', 'print-page');
define('PRINT_HTML_SYS_LINK_VISIBILITY_DEFAULT', 1);
define('PRINT_HTML_LINK_USE_ALIAS_DEFAULT', 0);
define('PRINT_HTML_BOOK_LINK_DEFAULT', 1);
define('PRINT_HTML_NEW_WINDOW_DEFAULT', 0);
define('PRINT_HTML_SENDTOPRINTER_DEFAULT', 0);
define('PRINT_SOURCEURL_ENABLED_DEFAULT', 1);
define('PRINT_SOURCEURL_DATE_DEFAULT', 0);
define('PRINT_SOURCEURL_FORCENODE_DEFAULT', 0);
define('PRINT_ROBOTS_NOINDEX_DEFAULT', 1);
define('PRINT_ROBOTS_NOFOLLOW_DEFAULT', 1);
define('PRINT_ROBOTS_NOARCHIVE_DEFAULT', 0);
define('PRINT_TYPE_SHOW_LINK_DEFAULT', 1);
define('PRINT_TYPE_COMMENT_LINK_DEFAULT', 0);
define('PRINT_TYPE_URLLIST_DEFAULT', 1);
define('PRINT_ALLOW_NORMAL_LINK', 1);
define('PRINT_ALLOW_BOOK_LINK', 2);
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define('PRINT_TYPE_FIELDS_WEIGHT', 30);
require_once(drupal_get_path('module', 'print') .'/print.admin.inc');
require_once(drupal_get_path('module', 'print') .'/print.pages.inc');
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* Implementation of hook_perm().
*/
function print_perm() {
return array('access print', 'administer print', 'node-specific print configuration', 'use PHP for link visibility');
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/**
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* Implementation of hook_menu().
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*/
function print_menu($may_cache) {
$items = array();
'path' => PRINT_PATH,
'title' => t('Printer-friendly'),
'callback' => 'print_controller_html',
'access' => user_access('access print'),
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'type' => MENU_CALLBACK,
$items[] = array(
'path' => 'admin/settings/print',
'title' => t('Printer, e-mail and PDF versions'),
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'description' => t('Adds a printer-friendly version link to content and administrative pages.'),
'callback' => 'drupal_get_form',
'callback arguments' => array('print_html_settings'),
'access' => user_access('administer print'),
);
$items[] = array(
'path' => 'admin/settings/print/html',
'title' => t('Web page'),
'weight' => 1,
'type' => MENU_DEFAULT_LOCAL_TASK,
);
$items[] = array(
'path' => 'admin/settings/print/html/options',
'title' => t('Options'),
'weight' => 1,
'type' => MENU_DEFAULT_LOCAL_TASK,
);
$items[] = array(
'path' => 'admin/settings/print/html/strings',
'title' => t('Text strings'),
'callback' => 'drupal_get_form',
'callback arguments' => array('print_html_strings_settings'),
'access' => array('administer print'),
'weight' => 2,
'type' => MENU_LOCAL_TASK,
);
$items[] = array(
'path' => 'admin/settings/print/common',
'title' => t('Settings'),
'callback' => 'drupal_get_form',
'callback arguments' => array('print_main_settings'),
'access' => user_access('administer print'),
$items[] = array(
'path' => 'admin/settings/print/common/options',
'title' => t('Options'),
'weight' => 1,
'type' => MENU_DEFAULT_LOCAL_TASK,
);
$items[] = array(
'path' => 'admin/settings/print/common/strings',
'title' => t('Text strings'),
'callback' => 'drupal_get_form',
'callback arguments' => array('print_main_strings_settings'),
'access' => array('administer print'),
'weight' => 2,
'type' => MENU_LOCAL_TASK,
);
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return $items;
}
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/**
* Implementation of hook_block().
*/
function print_block($op = 'list', $delta = 0, $edit = array()) {
switch ($op) {
case 'list':
$block[0]['info'] = t('Printer, e-mail and PDF versions');
$block[1]['info'] = t('Most printed');
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return $block;
break;
case 'configure':
return '';
case 'save':
return;
case 'view':
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$nid = preg_replace('!^node/!', '', $_GET['q']);
if (is_numeric($nid)) {
$node = node_load(array('nid' => $nid));
}
else {
$node = NULL;
}
$funcs = get_defined_functions();
$block['content'] = '';
foreach ($funcs['user'] as $func) {
if (preg_match('!^print.*?_insert_link$!', $func)) {
$link = $func(NULL, $node);
if (!empty($link)) {
$block['content'] .= $link .'<br />';
}
}
$block['subject'] = t('Most printed');
$result = db_query_range("SELECT path FROM {print_page_counter} ORDER BY totalcount DESC", 0, 3);
if (db_affected_rows()) {
$block['content'] = '<div class="item-list"><ul>';
while ($obj = db_fetch_object($result)) {
$block['content'] .= '<li>'. l(_print_get_title($obj->path), $obj->path) .'</li>';
}
$block['content'] .= '</ul></div>';
}
break;
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}
return $block;
break;
}
}
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/**
* Implementation of hook_link().
*/
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function print_link($type, $node = NULL, $teaser = FALSE) {
// Prevent links from being shown for event nodes when in calendar view
if (preg_match('!^event_node!', $type)) {
return;
}
$print_html_link_pos = variable_get('print_html_link_pos', array(PRINT_HTML_LINK_POS_DEFAULT => PRINT_HTML_LINK_POS_DEFAULT));
$print_html_link_use_alias = variable_get('print_html_link_use_alias', PRINT_HTML_LINK_USE_ALIAS_DEFAULT);
$allowed_type = print_link_allowed(array('type' => $type, 'node' => $node, 'teaser' => $teaser));
if (($allowed_type === PRINT_ALLOW_NORMAL_LINK) && !isset($node->parent) && !empty($print_html_link_pos['link'])) {
drupal_add_css(drupal_get_path('module', 'print') .'/css/printlinks.css');
$links = array();
$format = theme('print_format_link');
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$query_arr = $_GET;
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$query_arr['comment'] = $node->cid;
$query = print_query_string_encode($query_arr, array('q'));
if ($print_html_link_use_alias) {
$path = drupal_get_path_alias('node/'. $node->nid);
}
else {
$path = $node->nid;
}
$links['print_html'] = array(
'href' => PRINT_PATH .'/'. $path,
'title' => $format['text'],
'attributes' => $format['attributes'],
'html' => $format['html'],
'query' => $query,
);
return $links;
return;
/**
* Implementation of hook_link_alter().
*/
function print_link_alter(&$node, &$links) {
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foreach ($links as $module => $link) {
if (strpos($module, 'book_printer') !== FALSE) {
$print_html_book_link = variable_get('print_html_book_link', PRINT_HTML_BOOK_LINK_DEFAULT);
$format = theme('print_format_link');
switch ($print_html_book_link) {
case 1:
$path = $link['href'];
break;
case 2:
$print_html_link_use_alias = variable_get('print_html_link_use_alias', PRINT_HTML_LINK_USE_ALIAS_DEFAULT);
$path = $print_html_link_use_alias ? $node->path : $node->nid;
break;
}
$links[$module] = array(
'href' => PRINT_PATH .'/'. $path,
'title' => $format['text'],
'attributes' => $format['attributes'],
'html' => $format['html'],
);
/**
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* Implementation of hook_help().
*/
switch ($path) {
case 'admin/help#print':
// Return a line-break version of the module README
return filter_filter('process', 2, NULL, file_get_contents(drupal_get_path('module', 'print') .'/README.txt') );
$print_html_link_pos = variable_get('print_html_link_pos', array(PRINT_HTML_LINK_POS_DEFAULT => PRINT_HTML_LINK_POS_DEFAULT));
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if ((preg_match('!^node/\d+$!', $path) == 0) && !(empty($print_html_link_pos['link']) && empty($print_html_link_pos['corner']))) {
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static $output = FALSE;
if ($output === FALSE) {
$output = TRUE;
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$link = print_insert_link();
if ($link) {
return "<span class='print-syslink'>$link</span>";
}
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}
}
}
/**
* Implementation of hook_nodeapi().
*/
function print_nodeapi(&$node, $op = 'view', $teaser, $page) {
switch ($op) {
case 'view':
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$node->content['print_links'] = array(
'#value' => "<span class='print-link'></span>",
'#weight' => -101,
);
$print_html_link_pos = variable_get('print_html_link_pos', array(PRINT_HTML_LINK_POS_DEFAULT => PRINT_HTML_LINK_POS_DEFAULT));
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if (($teaser === FALSE) && !empty($print_html_link_pos['corner']) &&
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$link = print_insert_link(NULL, $node);
if ($link) {
$node->content['print_links']['#value'] = preg_replace('!</span>$!', $link .'</span>', $node->content['print_links']['#value']);
_print_set_node_fields($node);
if (user_access('administer print') || user_access('node-specific print configuration')) {
_print_node_conf_modify($node->nid, $node->print_display, $node->print_display_comment, $node->print_display_urllist);
}
break;
case 'delete':
db_query("DELETE FROM {print_node_conf} WHERE nid = %d", $node->nid);
db_query("DELETE FROM {print_page_counter} WHERE path = '%s'", $node->path);
break;
/**
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* Implementation of hook_form_alter().
*/
function print_form_alter($form_id, &$form) {
// Add the node-type settings option to activate the printer-friendly version link
if ((user_access('administer print') || user_access('node-specific print configuration')) && (($form_id == 'node_type_form') ||
(isset($form['type']) && isset($form['#node']) && $form['type']['#value'] .'_node_form' == $form_id))) {
'#title' => t('Printer, e-mail and PDF versions'),
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'#weight' => PRINT_TYPE_FIELDS_WEIGHT,
$form['print']['label'] = array(
'#type' => 'markup',
'#value' => '<p><strong>'. t('Printer-friendly version') .'</strong></p>',
);
'#type' => 'checkbox',
'#type' => 'checkbox',
'#title' => t('Show link in individual comments'),
$form['print']['print_display_urllist'] = array(
'#type' => 'checkbox',
'#title' => t('Show Printer-friendly URLs list'),
);
if ($form_id == 'node_type_form') {
$form['print']['print_display']['#default_value'] = variable_get('print_display_'. $form['#node_type']->type, PRINT_TYPE_SHOW_LINK_DEFAULT);
$form['print']['print_display_comment']['#default_value'] = variable_get('print_display_comment_'. $form['#node_type']->type, PRINT_TYPE_COMMENT_LINK_DEFAULT);
$form['print']['print_display_urllist']['#default_value'] = variable_get('print_display_urllist_'. $form['#node_type']->type, PRINT_TYPE_URLLIST_DEFAULT);
}
else {
$node = $form['#node'];
$form['print']['print_display']['#default_value'] = isset($node->print_display) ? $node->print_display : PRINT_TYPE_SHOW_LINK_DEFAULT;
$form['print']['print_display_comment']['#default_value'] = isset($node->print_display_comment) ? $node->print_display_comment : PRINT_TYPE_COMMENT_LINK_DEFAULT;
$form['print']['print_display_urllist']['#default_value'] = isset($node->print_display_urllist) ? $node->print_display_urllist : PRINT_TYPE_URLLIST_DEFAULT;
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$form['print']['label']['#value'] = '<p><em>'. t('The settings below only apply in case the corresponding type-specific setting is also enabled (except for the "Show link in individual comments").') .'</em></p>'. $form['print']['label']['#value'];
/**
* Auxiliary function to assign the per-node settings to the node object fields
*
* @param $node
* node to be modified
*/
function _print_set_node_fields(&$node) {
if (isset($node->nid)) {
$res = db_fetch_object(db_query("SELECT link, comments, url_list FROM {print_node_conf} WHERE nid = %d", $node->nid));
}
else {
$res = FALSE;
}
$node->print_display = $res ? intval($res->link) : PRINT_TYPE_SHOW_LINK_DEFAULT;
$node->print_display_comment = $res ? intval($res->comments) : PRINT_TYPE_COMMENT_LINK_DEFAULT;
$node->print_display_urllist = $res ? intval($res->url_list) : PRINT_TYPE_URLLIST_DEFAULT;
}
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/**
* Auxiliary function to discover a given page's title
*
* @param $path
* path of the page being identified
* @return
* string with the page's title
*/
function _print_get_title($path) {
$path = drupal_get_normal_path($path);
$nid = preg_replace('!^node/!', '', $path);
if (is_numeric($nid)) {
$res = db_fetch_object(db_query("SELECT title FROM {node} WHERE nid = %d", $nid));
return $res->title;
}
else {
$res = db_fetch_object(db_query("SELECT title FROM {menu} WHERE path = '%s'", $path));
return $res->link_title;
}
}
/**
* Update the print_node_conf table to reflect the given attributes
* If updating to the default values, delete the record.
*
* @param $nid
* value of the nid field (primary key)
* @param $link
* value of the link field (0 or 1)
* @param $comments
* value of the comments field (0 or 1)
* @param $url_list
* value of the url_list field (0 or 1)
*/
function _print_node_conf_modify($nid, $link, $comments, $url_list) {
if (($link == PRINT_TYPE_SHOW_LINK_DEFAULT) && ($comments == PRINT_TYPE_COMMENT_LINK_DEFAULT) &&
($url_list == PRINT_TYPE_URLLIST_DEFAULT)) {
db_query("DELETE FROM {print_node_conf} WHERE nid = %d", $nid);
}
else {
db_query("UPDATE {print_node_conf} SET link = %d, comments = %d, url_list = %d WHERE nid = %d", $link, $comments, $url_list, $nid);
if (!db_affected_rows()) {
db_query("INSERT INTO {print_node_conf} (nid, link, comments, url_list) VALUES (%d, %d, %d, %d)", $nid, $link, $comments, $url_list);
}
}
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/**
* Auxiliary function to fill the Printer-friendly link attributes
*
* @param $title
* text to displayed by the link when hovering over it with the mouse
* @param $class
* class attribute to be used in the link
* @param $new_window
* if TRUE opens the target page in a new window
function print_fill_attributes($title = '', $class = '', $new_window = FALSE) {
$print_newwindow = variable_get('print_newwindow', PRINT_NEWWINDOW_DEFAULT);
$print_robots_noindex = variable_get('print_robots_noindex', PRINT_ROBOTS_NOINDEX_DEFAULT);
$attributes = array();
$attributes['title'] = $title;
if (!empty($class)) {
$attributes['class'] = $class;
}
case 0:
$attributes['target'] = '_blank';
break;
case 1:
$attributes['onclick'] = 'window.open(this.href); return false';
break;
}
}
$attributes['rel'] = 'nofollow';
}
/**
* Auxiliary function to set the link text and html flag
*
* @param $type
* type of link: 0 or 1 for a text-only link, 2 for icon-only and 3 for
* both text and icon
* @param $text
* text to be displayed on the link to the printer-friendly page
* @param $img
* path to the icon file
* @return
* array with the link text and html flag
*/
function _print_format_link_aux($type = 0, $text = '', $img = '') {
if ($type >= 2) {
$html = TRUE;
switch ($type) {
case 2:
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$text = theme('image', $img, $text, $text, array('class' => 'print-icon'));
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$text = theme('image', $img, $text, $text, array('class' => 'print-icon print-icon-margin')) . $text;
break;
}
}
else {
$html = FALSE;
}
return array('text' => $text,
'html' => $html,
);
}
/**
* Format the Printer-friendly link
*
* @return
* array of formatted attributes
* @ingroup themeable
*/
function theme_print_format_link() {
$print_html_link_class = variable_get('print_html_link_class', PRINT_HTML_LINK_CLASS_DEFAULT);
$print_html_new_window = variable_get('print_html_new_window', PRINT_HTML_NEW_WINDOW_DEFAULT);
$print_html_show_link = variable_get('print_html_show_link', PRINT_HTML_SHOW_LINK_DEFAULT);
$print_html_link_text = variable_get('print_html_link_text', t('Printer-friendly version'));
$img = drupal_get_path('module', 'print') .'/icons/print_icon.gif';
$title = t('Display a printer-friendly version of this page.');
$class = strip_tags($print_html_link_class);
$new_window = $print_html_new_window;
$format = _print_format_link_aux($print_html_show_link, $print_html_link_text, $img);
return array('text' => $format['text'],
'html' => $format['html'],
'attributes' => print_fill_attributes($title, $class, $new_window),
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);
}
/**
* Auxiliary function to display a formatted Printer-friendly link
*
* Function made available so that developers may call this function from
* their defined pages/blocks.
*
* @param $path
* path of the original page (optional). If not specified, the current URL
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* @param $node
* an optional node object, to be used in defining the path, if used, the
* path argument is irrelevant
* @return
* string with the HTML link to the printer-friendly page
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function print_insert_link($path = NULL, $node = NULL) {
if ($node !== NULL) {
$nid = $node->nid;
$path = 'node/'. $nid;
$allowed_type = print_link_allowed(array('node' => $node));
}
else {
if ($path === NULL) {
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$nid = preg_replace('!^node/!', '', $_GET['q']);
$path = $_GET['q'];
}
else {
$nid = NULL;
}
$allowed_type = print_link_allowed(array('path' => $path));
}
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if ($allowed_type) {
if ($nid !== NULL) {
if ($allowed_type === PRINT_ALLOW_BOOK_LINK) {
$path = 'book/export/html/'. $nid;
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if (variable_get('print_html_link_use_alias', PRINT_HTML_LINK_USE_ALIAS_DEFAULT)) {
$path = drupal_get_path_alias($path);
}
else {
$path = $nid;
}
}
$path = PRINT_PATH .'/'. $path;
$query = print_query_string_encode($_GET, array('q'));
if (empty($query)) {
$query = NULL;
}
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drupal_add_css(drupal_get_path('module', 'print') .'/css/printlinks.css');
$format = theme('print_format_link');
return '<span class="print_html">'. l($format['text'], $path, $format['attributes'], $query, NULL, TRUE, $format['html']) .'</span>';
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else {
return FALSE;
}
}
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/**
* Check if a path matches any pattern in a set of patterns.
*
* @param $path
* The path to match.
* @param $patterns
* String containing a set of patterns separated by \n, \r or \r\n.
*
* @return
* Boolean value: TRUE if the path matches a pattern, FALSE otherwise.
*/
function _print_match_path($path, $patterns) {
static $regexps;
if (!isset($regexps[$patterns])) {
$regexps[$patterns] = '/^('. preg_replace(array('/(\r\n?|\n)/', '/\\\\\*/', '/(^|\|)\\\\<front\\\\>($|\|)/'), array('|', '.*', '\1'. preg_quote(variable_get('site_frontpage', 'node'), '/') .'\2'), preg_quote($patterns, '/')) .')$/';
}
return preg_match($regexps[$patterns], $path);
}
/**
* Determine if the current page is enabled according to the visibility settings
*
* @param $visibility
* current visibility settings:
* 0 for show on every page except the listed pages
* 1 for show on only the listed pages
* @param $pages
* list of pages
* @return
* TRUE if it is enabled, FALSE otherwise
*/
function _print_page_match($visibility, $pages) {
if ($pages) {
if ($visibility == 2) {
return drupal_eval($pages);
}
$path = drupal_get_path_alias($_GET['q']);
$page_match = _print_match_path($path, $pages);
if ($path != $_GET['q']) {
$page_match = $page_match || _print_match_path($_GET['q'], $pages);
}
return !($visibility xor $page_match);
}
else {
}
}
/**
* Determine a the link to the PF version is allowed depending on all possible settings
*
* @param $args
* array containing the possible parameters:
* teaser, node, type, path
* @return
* FALSE if not allowed
* PRINT_ALLOW_NORMAL_LINK if a normal link is allowed
* PRINT_ALLOW_BOOK_LINK if a link is allowed in a book node
*/
function print_link_allowed($args) {
if (!empty($args['teaser']) || !user_access('access print')) {
// If showing only the teaser or the user is not allowed or link is disabled
return FALSE;
}
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if (!empty($args['path'])) {
$nid = preg_replace('!^node/!', '', drupal_get_normal_path($args['path']));
if (is_numeric($nid)) {
$args['node'] = node_load(array('nid' => $nid));
}
}
if ($node_type === FALSE) {
if (isset($node->type)) {
$node_type = $node->type;
}
else {
$node_type = '';
}
}
// Node
$print_html_node_link_visibility = variable_get('print_html_node_link_visibility', PRINT_HTML_NODE_LINK_VISIBILITY_DEFAULT);
$print_html_node_link_pages = variable_get('print_html_node_link_pages', PRINT_HTML_NODE_LINK_PAGES_DEFAULT);
!_print_page_match($print_html_node_link_visibility, $print_html_node_link_pages)) {
// Page not in visibility list or we are working!
return FALSE;
}
elseif (isset($args['type']) && ($args['type'] == 'comment') && isset($node_type)) {
$res = db_fetch_object(db_query("SELECT comments FROM {print_node_conf} WHERE nid = %d", $node->nid));
$print_display_comment = $res ? intval($res->comments) : PRINT_TYPE_COMMENT_LINK_DEFAULT;
if (($print_display_comment) ||
variable_get('print_display_comment_'. $node_type, PRINT_TYPE_COMMENT_LINK_DEFAULT)) {
return PRINT_ALLOW_NORMAL_LINK;
}
if ((!$node->print_display) || (isset($node_type) &&
!variable_get('print_display_'. $node_type, PRINT_TYPE_SHOW_LINK_DEFAULT))) {
// Link for this node type is disabled
return FALSE;
}
// Node is a book;
$print_html_book_link = variable_get('print_html_book_link', PRINT_HTML_BOOK_LINK_DEFAULT);
switch ($print_html_book_link) {
case 1:
if (user_access('see printer-friendly version')) {
return PRINT_ALLOW_BOOK_LINK;
}
break;
case 2:
return PRINT_ALLOW_NORMAL_LINK;
}
}
else {
return PRINT_ALLOW_NORMAL_LINK;
}
}
}
else {
// 'System' page
$print_html_sys_link_visibility = variable_get('print_html_sys_link_visibility', PRINT_HTML_SYS_LINK_VISIBILITY_DEFAULT);
$print_html_sys_link_pages = variable_get('print_html_sys_link_pages', PRINT_HTML_SYS_LINK_PAGES_DEFAULT);
return _print_page_match($print_html_sys_link_visibility, $print_html_sys_link_pages);
}
/**
* Parse an array into a valid urlencoded query string.
* Modified from drupal_query_string_encode to prevent re-encoding of
* encoded original.
*
* @param $query
* The array to be processed e.g. $_GET
* @param $exclude
* The array filled with keys to be excluded.
* @return
* urlencoded string which can be appended to/as the URL query string
*/
function print_query_string_encode($query, $exclude = array(), $parent = '') {
$params = array();
foreach ($query as $key => $value) {
if ($parent) {
$key = $parent .'['. $key .']';
}
if (in_array($key, $exclude)) {
continue;
}
if (is_array($value)) {
$params[] = print_query_string_encode($value, $exclude, $key);
}
else {
$params[] = $key .'='. rawurlencode($value);
}
return implode('&', $params);
}