К новейшей редакции | Содержимое файла | Последнее изменение | Открыть журнал | RSS
| Редакция | Автор | № строки | Строка |
|---|---|---|---|
| 69 | alex-w | 1 | <?php |
| 2 | /** |
||
| 3 | * PEAR_Frontend, the singleton-based frontend for user input/output |
||
| 4 | * |
||
| 5 | * PHP versions 4 and 5 |
||
| 6 | * |
||
| 7 | * LICENSE: This source file is subject to version 3.0 of the PHP license |
||
| 8 | * that is available through the world-wide-web at the following URI: |
||
| 9 | * http://www.php.net/license/3_0.txt. If you did not receive a copy of |
||
| 10 | * the PHP License and are unable to obtain it through the web, please |
||
| 11 | * send a note to license@php.net so we can mail you a copy immediately. |
||
| 12 | * |
||
| 13 | * @category pear |
||
| 14 | * @package PEAR |
||
| 15 | * @author Greg Beaver <cellog@php.net> |
||
| 16 | * @copyright 1997-2008 The PHP Group |
||
| 17 | * @license http://www.php.net/license/3_0.txt PHP License 3.0 |
||
| 18 | * @version CVS: $Id: Frontend.php,v 1.13 2008/01/03 20:26:35 cellog Exp $ |
||
| 19 | * @link http://pear.php.net/package/PEAR |
||
| 20 | * @since File available since Release 1.4.0a1 |
||
| 21 | */ |
||
| 22 | |||
| 23 | /** |
||
| 24 | * Which user interface class is being used. |
||
| 25 | * @var string class name |
||
| 26 | */ |
||
| 27 | $GLOBALS['_PEAR_FRONTEND_CLASS'] = 'PEAR_Frontend_CLI'; |
||
| 28 | |||
| 29 | /** |
||
| 30 | * Instance of $_PEAR_Command_uiclass. |
||
| 31 | * @var object |
||
| 32 | */ |
||
| 33 | $GLOBALS['_PEAR_FRONTEND_SINGLETON'] = null; |
||
| 34 | |||
| 35 | /** |
||
| 36 | * Singleton-based frontend for PEAR user input/output |
||
| 37 | * |
||
| 38 | * @category pear |
||
| 39 | * @package PEAR |
||
| 40 | * @author Greg Beaver <cellog@php.net> |
||
| 41 | * @copyright 1997-2008 The PHP Group |
||
| 42 | * @license http://www.php.net/license/3_0.txt PHP License 3.0 |
||
| 43 | * @version Release: 1.7.2 |
||
| 44 | * @link http://pear.php.net/package/PEAR |
||
| 45 | * @since Class available since Release 1.4.0a1 |
||
| 46 | */ |
||
| 47 | class PEAR_Frontend extends PEAR |
||
| 48 | { |
||
| 49 | /** |
||
| 50 | * Retrieve the frontend object |
||
| 51 | * @return PEAR_Frontend_CLI|PEAR_Frontend_Web|PEAR_Frontend_Gtk |
||
| 52 | * @static |
||
| 53 | */ |
||
| 54 | function &singleton($type = null) |
||
| 55 | { |
||
| 56 | if ($type === null) { |
||
| 57 | if (!isset($GLOBALS['_PEAR_FRONTEND_SINGLETON'])) { |
||
| 58 | $a = false; |
||
| 59 | return $a; |
||
| 60 | } |
||
| 61 | return $GLOBALS['_PEAR_FRONTEND_SINGLETON']; |
||
| 62 | } else { |
||
| 63 | $a = PEAR_Frontend::setFrontendClass($type); |
||
| 64 | return $a; |
||
| 65 | } |
||
| 66 | } |
||
| 67 | |||
| 68 | /** |
||
| 69 | * Set the frontend class that will be used by calls to {@link singleton()} |
||
| 70 | * |
||
| 71 | * Frontends are expected to conform to the PEAR naming standard of |
||
| 72 | * _ => DIRECTORY_SEPARATOR (PEAR_Frontend_CLI is in PEAR/Frontend/CLI.php) |
||
| 73 | * @param string $uiclass full class name |
||
| 74 | * @return PEAR_Frontend |
||
| 75 | * @static |
||
| 76 | */ |
||
| 77 | function &setFrontendClass($uiclass) |
||
| 78 | { |
||
| 79 | if (is_object($GLOBALS['_PEAR_FRONTEND_SINGLETON']) && |
||
| 80 | is_a($GLOBALS['_PEAR_FRONTEND_SINGLETON'], $uiclass)) { |
||
| 81 | return $GLOBALS['_PEAR_FRONTEND_SINGLETON']; |
||
| 82 | } |
||
| 83 | if (!class_exists($uiclass)) { |
||
| 84 | $file = str_replace('_', '/', $uiclass) . '.php'; |
||
| 85 | if (PEAR_Frontend::isIncludeable($file)) { |
||
| 86 | include_once $file; |
||
| 87 | } |
||
| 88 | } |
||
| 89 | if (class_exists($uiclass)) { |
||
| 90 | $obj = &new $uiclass; |
||
| 91 | // quick test to see if this class implements a few of the most |
||
| 92 | // important frontend methods |
||
| 93 | if (is_a($obj, 'PEAR_Frontend')) { |
||
| 94 | $GLOBALS['_PEAR_FRONTEND_SINGLETON'] = &$obj; |
||
| 95 | $GLOBALS['_PEAR_FRONTEND_CLASS'] = $uiclass; |
||
| 96 | return $obj; |
||
| 97 | } else { |
||
| 98 | $err = PEAR::raiseError("not a frontend class: $uiclass"); |
||
| 99 | return $err; |
||
| 100 | } |
||
| 101 | } |
||
| 102 | $err = PEAR::raiseError("no such class: $uiclass"); |
||
| 103 | return $err; |
||
| 104 | } |
||
| 105 | |||
| 106 | /** |
||
| 107 | * Set the frontend class that will be used by calls to {@link singleton()} |
||
| 108 | * |
||
| 109 | * Frontends are expected to be a descendant of PEAR_Frontend |
||
| 110 | * @param PEAR_Frontend |
||
| 111 | * @return PEAR_Frontend |
||
| 112 | * @static |
||
| 113 | */ |
||
| 114 | function &setFrontendObject($uiobject) |
||
| 115 | { |
||
| 116 | if (is_object($GLOBALS['_PEAR_FRONTEND_SINGLETON']) && |
||
| 117 | is_a($GLOBALS['_PEAR_FRONTEND_SINGLETON'], get_class($uiobject))) { |
||
| 118 | return $GLOBALS['_PEAR_FRONTEND_SINGLETON']; |
||
| 119 | } |
||
| 120 | if (!is_a($uiobject, 'PEAR_Frontend')) { |
||
| 121 | $err = PEAR::raiseError('not a valid frontend class: (' . |
||
| 122 | get_class($uiobject) . ')'); |
||
| 123 | return $err; |
||
| 124 | } |
||
| 125 | $GLOBALS['_PEAR_FRONTEND_SINGLETON'] = &$uiobject; |
||
| 126 | $GLOBALS['_PEAR_FRONTEND_CLASS'] = get_class($uiobject); |
||
| 127 | return $uiobject; |
||
| 128 | } |
||
| 129 | |||
| 130 | /** |
||
| 131 | * @param string $path relative or absolute include path |
||
| 132 | * @return boolean |
||
| 133 | * @static |
||
| 134 | */ |
||
| 135 | function isIncludeable($path) |
||
| 136 | { |
||
| 137 | if (file_exists($path) && is_readable($path)) { |
||
| 138 | return true; |
||
| 139 | } |
||
| 140 | $fp = @fopen($path, 'r', true); |
||
| 141 | if ($fp) { |
||
| 142 | fclose($fp); |
||
| 143 | return true; |
||
| 144 | } |
||
| 145 | return false; |
||
| 146 | } |
||
| 147 | |||
| 148 | /** |
||
| 149 | * @param PEAR_Config |
||
| 150 | */ |
||
| 151 | function setConfig(&$config) |
||
| 152 | { |
||
| 153 | } |
||
| 154 | |||
| 155 | /** |
||
| 156 | * This can be overridden to allow session-based temporary file management |
||
| 157 | * |
||
| 158 | * By default, all files are deleted at the end of a session. The web installer |
||
| 159 | * needs to be able to sustain a list over many sessions in order to support |
||
| 160 | * user interaction with install scripts |
||
| 161 | */ |
||
| 162 | function addTempFile($file) |
||
| 163 | { |
||
| 164 | $GLOBALS['_PEAR_Common_tempfiles'][] = $file; |
||
| 165 | } |
||
| 166 | |||
| 167 | /** |
||
| 168 | * Log an action |
||
| 169 | * |
||
| 170 | * @param string $msg the message to log |
||
| 171 | * @param boolean $append_crlf |
||
| 172 | * @return boolean true |
||
| 173 | * @abstract |
||
| 174 | */ |
||
| 175 | function log($msg, $append_crlf = true) |
||
| 176 | { |
||
| 177 | } |
||
| 178 | |||
| 179 | /** |
||
| 180 | * Run a post-installation script |
||
| 181 | * |
||
| 182 | * @param array $scripts array of post-install scripts |
||
| 183 | * @abstract |
||
| 184 | */ |
||
| 185 | function runPostinstallScripts(&$scripts) |
||
| 186 | { |
||
| 187 | } |
||
| 188 | |||
| 189 | /** |
||
| 190 | * Display human-friendly output formatted depending on the |
||
| 191 | * $command parameter. |
||
| 192 | * |
||
| 193 | * This should be able to handle basic output data with no command |
||
| 194 | * @param mixed $data data structure containing the information to display |
||
| 195 | * @param string $command command from which this method was called |
||
| 196 | * @abstract |
||
| 197 | */ |
||
| 198 | function outputData($data, $command = '_default') |
||
| 199 | { |
||
| 200 | } |
||
| 201 | |||
| 202 | /** |
||
| 203 | * Display a modal form dialog and return the given input |
||
| 204 | * |
||
| 205 | * A frontend that requires multiple requests to retrieve and process |
||
| 206 | * data must take these needs into account, and implement the request |
||
| 207 | * handling code. |
||
| 208 | * @param string $command command from which this method was called |
||
| 209 | * @param array $prompts associative array. keys are the input field names |
||
| 210 | * and values are the description |
||
| 211 | * @param array $types array of input field types (text, password, |
||
| 212 | * etc.) keys have to be the same like in $prompts |
||
| 213 | * @param array $defaults array of default values. again keys have |
||
| 214 | * to be the same like in $prompts. Do not depend |
||
| 215 | * on a default value being set. |
||
| 216 | * @return array input sent by the user |
||
| 217 | * @abstract |
||
| 218 | */ |
||
| 219 | function userDialog($command, $prompts, $types = array(), $defaults = array()) |
||
| 220 | { |
||
| 221 | } |
||
| 222 | } |
||
| 223 | ?> |