Google Doc Embedder - Version 1.5

Version Description

Improved error checking.
Improved customization options for download text.
Added option to override default browser behavior for PDF links (force download).
Added option to reset options to defaults.

Release Info

Developer	k3davis
Plugin	Google Doc Embedder
Version	1.5
Comparing to
See all releases

Code changes from version 1.0.3 to 1.5

Files changed (7) hide show

functions.php +106 -0
gviewer.php +49 -32
options.php +67 -16
pdf.php +49 -0
readme.txt +7 -1
screenshot-2.png +0 -0
uninstall.php +3 -3

functions.php ADDED Viewed

	@@ -0,0 +1,106 @@


1	+ <?php
2	+
3	+ function getDefaults() {
4	+ // set global default settings
5	+ $defaults = array(
6	+ "gde_default_width" => "600",
7	+ "gde_default_height" => "500",
8	+ "gde_show_dl" => 1,
9	+ "gde_link_text" => "Download (%FT, %FS)",
10	+ "gde_link_pos" => "below",
11	+ "gde_link_func" => "default"
12	+ );
13	+
14	+ return $defaults;
15	+ }
16	+
17	+ function validLink($link) {
18	+
19	+ $urlregex = "^https?\:\/\/([a-z0-9+!(),;?&=\$_.-]+(\:[a-z0-9+!(),;?&=\$_.-]+)?@)?[a-z0-9+\$_-]+(\.[a-z0-9+\$_-]+)(\:[0-9]{2,5})?(\/([a-z0-9+\$_-]\.?)+)\/?(\?[a-z+&\$_.-][a-z0-9;:@/&%=+\$_.-])?(#[a-z_.-][a-z0-9+\$_.-])?\$";
20	+
21	+ if (eregi($urlregex, $link)) {
22	+ return true;
23	+ } else {
24	+ return false;
25	+ }
26	+ }
27	+
28	+ function validType($link, $exts) {
29	+
30	+ if(preg_match("/($exts)$/i",$link)){
31	+ return true;
32	+ } else {
33	+ return false;
34	+ }
35	+ }
36	+
37	+ function validUrl($url) {
38	+
39	+ // checks for existence and returns filesize
40	+ $handle = curl_init($url);
41	+ if (false === $handle)
42	+ {
43	+ return false;
44	+ }
45	+ curl_setopt($handle, CURLOPT_HEADER, true);
46	+ curl_setopt($handle, CURLOPT_FAILONERROR, true);
47	+ curl_setopt($handle, CURLOPT_HTTPHEADER, Array("User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.15) Gecko/20080623 Firefox/2.0.0.15") ); // needed for some sites (such as digg.com)
48	+ curl_setopt($handle, CURLOPT_NOBODY, true);
49	+ curl_setopt($handle, CURLOPT_FOLLOWLOCATION, true); // only useful in case of redirects
50	+ curl_setopt($handle, CURLOPT_RETURNTRANSFER, true);
51	+ $data = curl_exec($handle);
52	+ curl_close($handle);
53	+
54	+ $contentLength = "Unknown";
55	+ if (preg_match('/Content-Length: (\d+)/', $data, $matches)) {
56	+ $contentLength = (int)$matches[1];
57	+ }
58	+ return $contentLength;
59	+ }
60	+
61	+ function splitFilename($filename) {
62	+ $pos = strrpos($filename, '.');
63	+ if ($pos === false)
64	+ { // dot is not found in the filename
65	+ return array($filename, ''); // no extension
66	+ }
67	+ else
68	+ {
69	+ $basename = substr($filename, 0, $pos);
70	+ $extension = strtoupper(substr($filename, $pos+1));
71	+ return array($basename, $extension);
72	+ }
73	+ }
74	+
75	+ function formatBytes($bytes, $precision = 2) {
76	+ $units = array('B', 'KB', 'MB', 'GB', 'TB');
77	+
78	+ $bytes = max($bytes, 0);
79	+ $pow = floor(($bytes ? log($bytes) : 0) / log(1024));
80	+ $pow = min($pow, count($units) - 1);
81	+
82	+ $bytes /= pow(1024, $pow);
83	+
84	+ return round($bytes, $precision) . '' . $units[$pow];
85	+ }
86	+
87	+ function sanitizeOpt($value) {
88	+ $value = ereg_replace('[^0-9]+', '', $value);
89	+ return $value;
90	+ }
91	+
92	+ function getPluginUrl() {
93	+ // this is a backwards-compatibility function for WP 2.5
94	+ if (!function_exists('plugins_url')) {
95	+ return get_option('siteurl') . '/wp-content/plugins/' . plugin_basename(dirname(__FILE__));
96	+ }
97	+
98	+ return plugins_url(plugin_basename(dirname(__FILE__)));
99	+ }
100	+
101	+
102	+ function shortUrl($u) {
103	+ return file_get_contents('http://tinyurl.com/api-create.php?url='.$u);
104	+ }
105	+
106	+ ?>

gviewer.php CHANGED Viewed

@@ -5,7 +5,7 @@ Plugin Name: Google Doc Embedder
             Plugin URI: http://wordpress.org/extend/plugins/google-document-embedder/
             Description: Lets you embed PDF files and PowerPoint presentations in a page or post using the Google Document Viewer.
             Author: Kevin Davis
-            -
            Version: 1.0.3
             */
             /*  Copyright 2009 Kevin Davis. E-mail: kev@tnw.org
@@ -24,12 +24,13 @@ Version: 1.0.3
                 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
             */
-            -
            include('wpframe.php');
             // usage: [gview file="http://path.to/file.pdf" save="1" width="600" height="500"]
             function gviewer_func($atts) {
-            -
            	// defaults
             	$dl = get_option('gde_show_dl');
             	$wd = get_option('gde_default_width');
             	$ht = get_option('gde_default_height');
@@ -49,54 +50,70 @@ function gviewer_func($atts) {
             		$code = "\n<!-- GDE EMBED ERROR: invalid URL, please use fully qualified URL -->\n";
             	} elseif (!validType($file,$exts)) {
             		$code = "\n<!-- GDE EMBED ERROR: unsupported file type -->\n";
             	} else {
-            -
             		$code=<<<HERE
-            -
            <iframe src="http://docs.google.com/gview?url=%U%&embedded=true" style="width:%W%px; height:%H%px;" frameborder="0"></iframe>
             HERE;
             		$code = str_replace("%U%", $file, $code);
             		$code = str_replace("%W%", $width, $code);
             		$code = str_replace("%H%", $height, $code);
-            -
            		if ($save == "1") {
-            -
            		$code .= "<p class=\"gde-dl\"><a href=\"$file\" target=\"_blank\">$txt</a></p>";
-            -
            		}
+            	}
             	return $code;
+            }
-            -
            function validLink($link) {
-            -
-            -
            $urlregex = "^https?\:\/\/([a-z0-9+!*(),;?&=\$_.-]+(\:[a-z0-9+!*(),;?&=\$_.-]+)?@)?[a-z0-9+\$_-]+(\.[a-z0-9+\$_-]+)*(\:[0-9]{2,5})?(\/([a-z0-9+\$_-]\.?)+)*\/?(\?[a-z+&\$_.-][a-z0-9;:@/&%=+\$_.-]*)?(#[a-z_.-][a-z0-9+\$_.-]*)?\$";
-            -
-            -
                if (eregi($urlregex, $link)) {
-            -
                    return true;
-            -
                } else {
-            -
                    return false;
-            -
                }
-            -
            }
-            -
-            -
            function validType($link, $exts) {
-            -
-            -
            	if(preg_match("/($exts)$/i",$link)){
-            -
                    return true;
-            -
                } else {
-            -
                    return false;
-            -
                }
-            -
            }
-            -
             // activate plugin
             register_activation_hook( __FILE__, 'gde_activate');
             function gde_activate() {
             	global $wpdb;
             	// initial options
-            -
            	add_option('gde_default_width', '600');
-            -
            	add_option('gde_default_height', '500');
-            -
            	add_option('gde_show_dl', 1);
-            -
            	add_option('gde_link_text', 'download file');
+            }
             // add an option page


5	Plugin URI: http://wordpress.org/extend/plugins/google-document-embedder/
6	Description: Lets you embed PDF files and PowerPoint presentations in a page or post using the Google Document Viewer.
7	Author: Kevin Davis
8	+ Version: 1.5
9	*/
10
11	/* Copyright 2009 Kevin Davis. E-mail: kev@tnw.org

24	Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
25	*/
26
27	+ include_once('wpframe.php');
28	+ include_once('functions.php');
29
30	// usage: [gview file="http://path.to/file.pdf" save="1" width="600" height="500"]
31	function gviewer_func($atts) {
32
33	+ // current settings
34	$dl = get_option('gde_show_dl');
35	$wd = get_option('gde_default_width');
36	$ht = get_option('gde_default_height');

50	$code = "\n<!-- GDE EMBED ERROR: invalid URL, please use fully qualified URL -->\n";
51	} elseif (!validType($file,$exts)) {
52	$code = "\n<!-- GDE EMBED ERROR: unsupported file type -->\n";
53	+ } elseif (!$fsize = validUrl($file)) {
54	+ $code = "\n<!-- GDE EMBED ERROR: file not found -->\n";
55	} else {
56	+ $fn = basename($file);
57	+ $fnp = splitFilename($fn);
58	+ $fsize = formatBytes($fsize);
59	+
60	$code=<<<HERE
61	+ <iframe src="http://docs.google.com/gview?url=%U%&embedded=true" style="width:%W%px; height:%H%px;" frameborder="0" class="gde-frame"></iframe>\n
62	HERE;
63
64	+ if ($save == "1") {
65	+
66	+ $dlMethod = get_option('gde_link_func');
67	+ if ($fnp[1] == "PDF") {
68	+ if ($dlMethod == "force" or $dlMethod == "force-mask") {
69	+ $dlFile = getPluginUrl();
70	+ $fileParts = parse_url($file);
71	+ $fileStr = str_replace($fileParts['scheme']."://","",$file);
72	+ $dlFile .= "/pdf.php?file=".$fileStr."&dl=1&fn=".$fn;
73	+ $target = "_self";
74	+ } elseif ($dlMethod == "default") {
75	+ $dlFile = $file;
76	+ $target = "_blank";
77	+ }
78	+ if ($dlMethod == "force-mask") {
79	+ $dlFile = shortUrl($dlFile);
80	+ }
81	+
82	+ } else {
83	+ $dlFile = $file;
84	+ $target = "_blank";
85	+ }
86	+ $linkcode = "<p class=\"gde-link\"><a href=\"$dlFile\" target=\"$target\">$txt</a></p>";
87	+
88	+ if (get_option('gde_link_pos') == "above") {
89	+ $code = $linkcode . '' . $code;
90	+ } else {
91	+ $code = $code . '' . $linkcode;
92	+ }
93	+ }
94	+
95	$code = str_replace("%U%", $file, $code);
96	$code = str_replace("%W%", $width, $code);
97	$code = str_replace("%H%", $height, $code);
98	+ $code = str_replace("%FN", $fn, $code);
99	+ $code = str_replace("%FT", $fnp[1], $code);
100	+ $code = str_replace("%FS", $fsize, $code);
101
102	}
103
104	return $code;
105	}
106




















107	// activate plugin
108	register_activation_hook( __FILE__, 'gde_activate');
109	function gde_activate() {
110	global $wpdb;
111
112	// initial options
113	+ $defaults = getDefaults();
114	+ foreach($defaults as $set => $val) {
115	+ add_option($set, $val);
116	+ }
117	}
118
119	// add an option page

options.php CHANGED Viewed

	@@ -1,19 +1,46 @@
1	<?php
2	- ~~include~~('wpframe.php');

3
4	- if(isset($_REQUEST['~~submit~~']) ~~and $_REQUEST['submit']~~) {














5	if(isset($_POST['gde_show_dl'])) {
6	update_option('gde_show_dl', 1);
7	} else {
8	update_option('gde_show_dl', 0);
9	}
10	if(isset($_POST['gde_default_width'])) {
11	- ~~update_option('gde_default_width',~~ ~~sanitizeOpt(~~$_POST['gde_default_width']));

12	}
13	if(isset($_POST['gde_default_height'])) {
14	- ~~update_option('gde_default_height',~~ ~~sanitizeOpt(~~$_POST['gde_default_height']));





15	}
16	- if(isset($_POST['~~gde_link_text~~'])) ~~update_option('gde_link_text', $_POST['gde_link_text']);~~






17	showMessage("Options updated");
18	}
19	?>
	@@ -26,7 +53,7 @@ if(isset($_REQUEST['submit']) and $_REQUEST['submit']) {
26	<table class="form-table">
27	<tr valign="top">
28	<td colspan="2"><strong>Global Viewer Size</strong><br/>
29	- ~~<em>~~To override on individual posts, manually set height= and width= in the post shortcode.</td>
30	</tr>
31	<tr valign="top">
32	<th scope="row">Default Width</th>
	@@ -38,20 +65,43 @@ if(isset($_REQUEST['submit']) and $_REQUEST['submit']) {
38	</tr>
39	<tr valign="top">
40	<td colspan="2"><strong>Download Link Options</strong><br/>
41	- ~~<em>~~To override ~~the~~ display setting on an individual post, use ~~the~~ save= ~~attribute~~.</em></td>
42	</tr>
43	<tr valign="top">
44	- <td colspan="2"><?php ~~showOption~~('gde_show_dl', t('~~Show~~ the download link by default')); ?></td>
45	</tr>
46	<tr valign="top">
47	<th scope="row">Link Text</th>
48	- <td><input type="text" name="gde_link_text" value="<?php echo get_option('gde_link_text'); ?>" ~~/></td>~~





















49	</tr>
50	</table>
51	<p class="submit">
52	<input type="hidden" id="user-id" name="user_ID" value="<?php echo (int) $user_ID ?>" />
53	<span id="autosave"></span>
54	- <input type="submit" name="submit" value="<?php e('Save Options') ?>" ~~style="font-weight: bold;"~~ />


55	</p>
56
57	</form>
	@@ -59,15 +109,16 @@ if(isset($_REQUEST['submit']) and $_REQUEST['submit']) {
59	</div>
60
61	<?php
62	- function ~~showOption~~($option, $title) {
63	?>
64	<input type="checkbox" name="<?php echo $option; ?>" value="1" id="<?php echo $option?>" <?php if(get_option($option)) print " checked='checked'"; ?> />
65	<label for="<?php echo $option?>"><?php e($title) ?></label><br />
66
67	<?php
68	}
69	-
70	- ~~function sanitizeOpt($value) {~~
71	- $value = ~~ereg_replace~~(~~'[^0-9]+',~~ ~~'',~~ $value);
72	- ~~return $value;~~
73	- }


1	<?php
2	+ include_once('wpframe.php');
3	+ include_once('functions.php');
4
5	+ if(isset($_REQUEST['defaults'])) {
6	+
7	+ // reset to plug-in defaults
8	+ $set = getDefaults();
9	+ update_option('gde_default_width', $set['gde_default_width']);
10	+ update_option('gde_default_height', $set['gde_default_height']);
11	+ update_option('gde_show_dl', $set['gde_show_dl']);
12	+ update_option('gde_link_text', $set['gde_link_text']);
13	+ update_option('gde_link_pos', $set['gde_link_pos']);
14	+ update_option('gde_link_func', $set['gde_link_func']);
15	+
16	+ showMessage("Options reset to defaults");
17	+ } elseif(isset($_REQUEST['submit'])) {
18	+
19	+ // change user defaults
20	if(isset($_POST['gde_show_dl'])) {
21	update_option('gde_show_dl', 1);
22	} else {
23	update_option('gde_show_dl', 0);
24	}
25	if(isset($_POST['gde_default_width'])) {
26	+ $neww = $_POST['gde_default_width'];
27	+ if (strlen($neww) > 0) update_option('gde_default_width', sanitizeOpt($neww));
28	}
29	if(isset($_POST['gde_default_height'])) {
30	+ $newh = $_POST['gde_default_height'];
31	+ if (strlen($newh) > 0) update_option('gde_default_height', sanitizeOpt($newh));
32	+ }
33	+ if(isset($_POST['gde_link_text'])) {
34	+ $newt = $_POST['gde_link_text'];
35	+ if (strlen(utf8_decode($newt))) update_option('gde_link_text', $newt);
36	}
37	+ if(isset($_POST['gde_link_pos'])) {
38	+ update_option('gde_link_pos', $_POST['gde_link_pos']);
39	+ }
40	+ if(isset($_POST['gde_link_func'])) {
41	+ update_option('gde_link_func', $_POST['gde_link_func']);
42	+ }
43	+
44	showMessage("Options updated");
45	}
46	?>

53	<table class="form-table">
54	<tr valign="top">
55	<td colspan="2"><strong>Global Viewer Size</strong><br/>
56	+ To override on individual posts, manually set <code>height=</code> and <code>width=</code> (number in px) in the post shortcode.</td>
57	</tr>
58	<tr valign="top">
59	<th scope="row">Default Width</th>

65	</tr>
66	<tr valign="top">
67	<td colspan="2"><strong>Download Link Options</strong><br/>
68	+ To override display setting on an individual post, use <code>save="1"</code> (show) or <code>save="0"</code> (hide) in the post shortcode.</em></td>
69	</tr>
70	<tr valign="top">
71	+ <td colspan="2"><?php showCheck('gde_show_dl', t('Display the download link by default')); ?></td>
72	</tr>
73	<tr valign="top">
74	<th scope="row">Link Text</th>
75	+ <td><input type="text" size="50" name="gde_link_text" value="<?php echo get_option('gde_link_text'); ?>" /><br/>
76	+ <em>You can further customize text using these dynamic replacements:</em><br/>
77	+ <code>%FN</code> : filename
78	+ <code>%FT</code> : file type
79	+ <code>%FS</code> : file size</td>
80	+ </tr>
81	+ <tr valign="top">
82	+ <th scope="row">Link Position</th>
83	+ <td><select name="gde_link_pos">
84	+ <?php showOption('above', 'gde_link_pos', t('Above Viewer')); ?>
85	+ <?php showOption('below', 'gde_link_pos', t('Below Viewer')); ?>
86	+ </select>
87	+ </td>
88	+ </tr>
89	+ <r valign="top">
90	+ <th scope="row">Link Behavior</th>
91	+ <td><select name="gde_link_func">
92	+ <?php showOption('default', 'gde_link_func', t('Browser Default')); ?>
93	+ <?php showOption('force', 'gde_link_func', t('Force Download')); ?>
94	+ <?php showOption('force-mask', 'gde_link_func', t('Force Download (Mask URL)')); ?>
95	+ </select>
96	+ </td>
97	</tr>
98	</table>
99	<p class="submit">
100	<input type="hidden" id="user-id" name="user_ID" value="<?php echo (int) $user_ID ?>" />
101	<span id="autosave"></span>
102	+ <input type="submit" name="submit" value="<?php e('Save Options') ?>" />
103	+
104	+ <input type="submit" name="defaults" value="<?php e('Reset to Defaults') ?>" onClick="javascript:return confirm('Are you sure you want to reset all settings to defaults?')" />
105	</p>
106
107	</form>

109	</div>
110
111	<?php
112	+ function showCheck($option, $title) {
113	?>
114	<input type="checkbox" name="<?php echo $option; ?>" value="1" id="<?php echo $option?>" <?php if(get_option($option)) print " checked='checked'"; ?> />
115	<label for="<?php echo $option?>"><?php e($title) ?></label><br />
116
117	<?php
118	}
119	+ function showOption($value, $option, $title) {
120	+ ?>
121	+ <option value="<?php echo $value; ?>"<?php if((get_option($option)) == $value) print " selected='yes'"; ?>><?php echo $title; ?></option>
122	+ <?php
123	+ }
124	+ ?>

pdf.php ADDED Viewed

	@@ -0,0 +1,49 @@


1	+ <?php
2	+
3	+ /* Calls remote PDF file locally (automates remote fetch)
4	+
5	+ USAGE: pdf.php?
6	+ file=file.pdf (the name of the remote file, required)
7	+ download=1 (force save dialog rather than display in browser, optional)
8	+ */
9	+
10	+ $str = $_SERVER['QUERY_STRING'];
11	+ parse_str($str);
12	+
13	+ if (!$file) {
14	+ echo "<html>No filename specified, action cancelled.</html>\n";
15	+ exit;
16	+ } elseif (!preg_match("/.pdf$/i",$file)) {
17	+ # invalid filename or hack attempt
18	+ echo "<html>Invalid filename, action cancelled.</html>\n";
19	+ exit;
20	+ }
21	+
22	+ $file = "http://".$file;
23	+ $handle = fopen("$file", "rb");
24	+
25	+ if (!$handle) {
26	+ # file doesn't exist
27	+ echo "<html>Nonexistant filename, action cancelled.</html>\n";
28	+ fclose($handle);
29	+ exit;
30	+ }
31	+
32	+ $contents = '';
33	+ while (!feof($handle)) {
34	+ $contents .= fread($handle, 8192);
35	+ }
36	+ fclose($handle);
37	+
38	+
39	+ // We'll be outputting a PDF
40	+ header('Content-type: application/pdf');
41	+
42	+ // force save dialog with given name
43	+ if ($dl) {
44	+ header('Content-Disposition: attachment; filename="'.$fn.'"');
45	+ }
46	+
47	+ // spit it out
48	+ echo $contents;
49	+ ?>

readme.txt CHANGED Viewed

	@@ -44,7 +44,7 @@ Optional attributes:
44	* `height=` : To override the default height of the viewer, enter a new height value (number in pixels)
45
46	= Nothing is showing up! What do I do? =
47	- View the source on the web page where you've embedded the viewer. In order to degrade gracefully in case an error occurs, error messages will be inserted as HTML comments in these pages at the spot the viewer is called.
48
49	= I wish the plug-in had feature XYZ... =
50	That's not a question ;) but if you have any particular ideas on further development of this plug-in, please <a href="http://wordpress.org/tags/google-document-embedder?forum_id=10#postform">post a message</a> and I'll see what I can do.
	@@ -56,6 +56,12 @@ That's not a question ;) but if you have any particular ideas on further develop
56
57	== Changelog ==
58






59	= 1.0.3 =
60	* Installation bug fix.
61


44	* `height=` : To override the default height of the viewer, enter a new height value (number in pixels)
45
46	= Nothing is showing up! What do I do? =
47	+ View the source on the web page where you've embedded the viewer. In order to degrade gracefully in case an error occurs, error messages will be inserted as HTML comments in these pages at the spot the viewer is called: `<-- GDE ERROR: (error) -->`
48
49	= I wish the plug-in had feature XYZ... =
50	That's not a question ;) but if you have any particular ideas on further development of this plug-in, please <a href="http://wordpress.org/tags/google-document-embedder?forum_id=10#postform">post a message</a> and I'll see what I can do.

56
57	== Changelog ==
58
59	+ = 1.5 =
60	+ * Improved error checking.
61	+ * Improved customization options for download text.
62	+ * Added option to override default browser behavior for PDF links (force download).
63	+ * Added option to reset options to defaults.
64	+
65	= 1.0.3 =
66	* Installation bug fix.
67

screenshot-2.png CHANGED Viewed

Binary file

uninstall.php CHANGED Viewed

	@@ -1,10 +1,10 @@
1	<?php

2
3	// perform cleanup, be a good citizen
4
5	- $options = ~~array~~(~~'gde_default_width','gde_default_height','gde_show_dl','gde_link_text'~~);
6	-
7	- foreach ($options as $opt) {
8	delete_option($opt);
9	}
10


1	<?php
2	+ include_once('functions.php');
3
4	// perform cleanup, be a good citizen
5
6	+ $options = getDefaults();
7	+ foreach ($options as $opt => $val) {

8	delete_option($opt);
9	}
10