5 * Example XKCD Drush command.
7 * To run this *fun* command, execute `drush --include=./examples xkcd` from
8 * within your drush directory.
10 * See `drush topic docs-commands` for more information about command authoring.
12 * You can copy this file to any of the following
13 * 1. A .drush folder in your HOME folder.
14 * 2. Anywhere in a folder tree below an active module on your site.
15 * 3. /usr/share/drush/commands (configurable)
16 * 4. In an arbitrary folder specified with the --include option.
17 * 5. Drupal's /drush or /sites/all/drush folders, or in the /drush
18 * folder in the directory above the Drupal root.
22 * Implements hook_drush_command().
24 * In this hook, you specify which commands your drush module makes available,
25 * what it does and description.
27 * Notice how this structure closely resembles how you define menu hooks.
29 * See `drush topic docs-commands` for a list of recognized keys.
31 function xkcd_drush_command() {
34 // The 'xkcd' command.
35 $items['xkcd-fetch'] = array(
36 'description' => "Retrieve and display xkcd cartoons.",
38 'search' => 'Optional argument to retrive the cartoons matching an index number, keyword search or "random". If omitted the latest cartoon will be retrieved.',
41 'image-viewer' => 'Command to use to view images (e.g. xv, firefox). Defaults to "display" (from ImageMagick).',
42 'google-custom-search-api-key' => 'Google Custom Search API Key, available from https://code.google.com/apis/console/. Default key limited to 100 queries/day globally.',
45 'drush xkcd' => 'Retrieve and display the latest cartoon.',
46 'drush xkcd sandwich' => 'Retrieve and display cartoons about sandwiches.',
47 'drush xkcd 123 --image-viewer=eog' => 'Retrieve and display cartoon #123 in eog.',
48 'drush xkcd random --image-viewer=firefox' => 'Retrieve and display a random cartoon in Firefox.',
50 'aliases' => array('xkcd'),
51 // No bootstrap at all.
52 'bootstrap' => DRUSH_BOOTSTRAP_NONE,
59 * Implements hook_drush_help().
61 * This function is called whenever a drush user calls
62 * 'drush help <name-of-your-command>'. This hook is optional. If a command
63 * does not implement this hook, the command's description is used instead.
65 * This hook is also used to look up help metadata, such as help
66 * category title and summary. See the comments below for a description.
68 function xkcd_drush_help($section) {
70 case 'drush:xkcd-fetch':
71 return dt("A command line tool (1) for a web site tool (2), that emulates
72 (badly) a web based tool (3) that emulates (badly) a command line tool (4) to
73 access a web site (5) with awesome geek humor.\n
76 (3) http://uni.xkcd.com/
78 (5) http://xkcd.com/");
83 * Implements drush_hook_COMMAND().
85 * The command callback is where the action takes place.
87 * The function name should be same as command name but with dashes turned to
88 * underscores and 'drush_commandfile_' prepended, where 'commandfile' is
89 * taken from the file 'commandfile.drush.inc', which in this case is
90 * 'sandwich'. Note also that a simplification step is also done in instances
91 * where the commandfile name is the same as the beginning of the command name,
92 * "drush_example_example_foo" is simplified to just "drush_example_foo".
93 * To also implement a hook that is called before your command, implement
94 * "drush_hook_pre_example_foo". For a list of all available hooks for a
95 * given command, run drush in --debug mode.
97 * If for some reason you do not want your hook function to be named
98 * after your command, you may define a 'callback' item in your command
99 * object that specifies the exact name of the function that should be
102 * In this function, all of Drupal's API is (usually) available, including
103 * any functions you have added in your own modules/themes.
105 * @see drush_invoke()
108 * @param string $search
109 * An optional string with search keyworks, cartoon ID or "random".
111 function drush_xkcd_fetch($search = '') {
112 if (empty($search)) {
113 drush_xkcd_display('http://xkcd.com');
115 elseif (is_numeric($search)) {
116 drush_xkcd_display('http://xkcd.com/' . $search);
118 elseif ($search == 'random') {
119 $xkcd_response = @json_decode(file_get_contents('http://xkcd.com/info.0.json'));
120 if (!empty($xkcd_response->num)) {
121 drush_xkcd_display('http://xkcd.com/' . rand(1, $xkcd_response->num));
125 // This uses an API key with a limited number of searches per.
126 $search_response = @json_decode(file_get_contents('https://www.googleapis.com/customsearch/v1?key=' . drush_get_option('google-custom-search-api-key', 'AIzaSyDpE01VDNNT73s6CEeJRdSg5jukoG244ek') . '&cx=012652707207066138651:zudjtuwe28q&q=' . $search));
127 if (!empty($search_response->items)) {
128 foreach ($search_response->items as $item) {
129 drush_xkcd_display($item->link);
133 drush_set_error('DRUSH_XKCD_SEARCH_FAIL', dt('The search failed or produced no results.'));
139 * Display a given XKCD cartoon.
141 * Retrieve and display a table of metadata for an XKCD cartoon, then retrieve
142 * and display the cartoon using a specified image viewer.
145 * A string with the URL of the cartoon to display.
147 function drush_xkcd_display($url) {
148 $xkcd_response = @json_decode(file_get_contents($url . '/info.0.json'));
149 if (!empty($xkcd_response->num)) {
150 $data = (array) $xkcd_response;
151 $data['date'] = $data['year'] . '/' . $data['month'] . '/' . $data['day'];
152 unset($data['safe_title'], $data['news'], $data['link'], $data['year'], $data['month'], $data['day']);
153 drush_print_table(drush_key_value_to_array_table($data));
154 $img = drush_download_file($data['img']);
155 drush_register_file_for_deletion($img);
156 drush_shell_exec(drush_get_option('image-viewer', 'display') . ' ' . $img);
159 drush_set_error('DRUSH_XKCD_METADATA_FAIL', dt('Unable to retrieve cartoon metadata.'));