| // +----------------------------------------------------------------------+ // // $Id: Getopt.php,v 1.21.4.7 2003/12/05 21:57:01 andrei Exp $ require_once 'PEAR.php'; /** * Command-line options parsing class. * * @author Andrei Zmievski * */ class Console_Getopt { /** * Parses the command-line options. * * The first parameter to this function should be the list of command-line * arguments without the leading reference to the running program. * * The second parameter is a string of allowed short options. Each of the * option letters can be followed by a colon ':' to specify that the option * requires an argument, or a double colon '::' to specify that the option * takes an optional argument. * * The third argument is an optional array of allowed long options. The * leading '--' should not be included in the option name. Options that * require an argument should be followed by '=', and options that take an * option argument should be followed by '=='. * * The return value is an array of two elements: the list of parsed * options and the list of non-option command-line arguments. Each entry in * the list of parsed options is a pair of elements - the first one * specifies the option, and the second one specifies the option argument, * if there was one. * * Long and short options can be mixed. * * Most of the semantics of this function are based on GNU getopt_long(). * * @param array $args an array of command-line arguments * @param string $short_options specifies the list of allowed short options * @param array $long_options specifies the list of allowed long options * * @return array two-element array containing the list of parsed options and * the non-option arguments * * @access public * */ function getopt2($args, $short_options, $long_options = null) { return Console_Getopt::doGetopt(2, $args, $short_options, $long_options); } /** * This function expects $args to start with the script name (POSIX-style). * Preserved for backwards compatibility. * @see getopt2() */ function getopt($args, $short_options, $long_options = null) { return Console_Getopt::doGetopt(1, $args, $short_options, $long_options); } /** * The actual implementation of the argument parsing code. */ function doGetopt($version, $args, $short_options, $long_options = null) { // in case you pass directly readPHPArgv() as the first arg if (PEAR::isError($args)) { return $args; } if (empty($args)) { return array(array(), array()); } $opts = array(); $non_opts = array(); settype($args, 'array'); if ($long_options) { sort($long_options); } /* * Preserve backwards compatibility with callers that relied on * erroneous POSIX fix. */ if ($version < 2) { if (isset($args[0]{0}) && $args[0]{0} != '-') { array_shift($args); } } reset($args); while (list($i, $arg) = each($args)) { /* The special element '--' means explicit end of options. Treat the rest of the arguments as non-options and end the loop. */ if ($arg == '--') { $non_opts = array_merge($non_opts, array_slice($args, $i + 1)); break; } if ($arg{0} != '-' || (strlen($arg) > 1 && $arg{1} == '-' && !$long_options)) { $non_opts = array_merge($non_opts, array_slice($args, $i)); break; } elseif (strlen($arg) > 1 && $arg{1} == '-') { $error = Console_Getopt::_parseLongOption(substr($arg, 2), $long_options, $opts, $args); if (PEAR::isError($error)) return $error; } else { $error = Console_Getopt::_parseShortOption(substr($arg, 1), $short_options, $opts, $args); if (PEAR::isError($error)) return $error; } } return array($opts, $non_opts); } /** * @access private * */ function _parseShortOption($arg, $short_options, &$opts, &$args) { for ($i = 0; $i < strlen($arg); $i++) { $opt = $arg{$i}; $opt_arg = null; /* Try to find the short option in the specifier string. */ if (($spec = strstr($short_options, $opt)) === false || $arg{$i} == ':') { return PEAR::raiseError("Console_Getopt: unrecognized option -- $opt"); } if (strlen($spec) > 1 && $spec{1} == ':') { if (strlen($spec) > 2 && $spec{2} == ':') { if ($i + 1 < strlen($arg)) { /* Option takes an optional argument. Use the remainder of the arg string if there is anything left. */ $opts[] = array($opt, substr($arg, $i + 1)); break; } } else { /* Option requires an argument. Use the remainder of the arg string if there is anything left. */ if ($i + 1 < strlen($arg)) { $opts[] = array($opt, substr($arg, $i + 1)); break; } else if (list(, $opt_arg) = each($args)) /* Else use the next argument. */; else return PEAR::raiseError("Console_Getopt: option requires an argument -- $opt"); } } $opts[] = array($opt, $opt_arg); } } /** * @access private * */ function _parseLongOption($arg, $long_options, &$opts, &$args) { @list($opt, $opt_arg) = explode('=', $arg); $opt_len = strlen($opt); for ($i = 0; $i < count($long_options); $i++) { $long_opt = $long_options[$i]; $opt_start = substr($long_opt, 0, $opt_len); /* Option doesn't match. Go on to the next one. */ if ($opt_start != $opt) continue; $opt_rest = substr($long_opt, $opt_len); /* Check that the options uniquely matches one of the allowed options. */ if ($opt_rest != '' && $opt{0} != '=' && $i + 1 < count($long_options) && $opt == substr($long_options[$i+1], 0, $opt_len)) { return PEAR::raiseError("Console_Getopt: option --$opt is ambiguous"); } if (substr($long_opt, -1) == '=') { if (substr($long_opt, -2) != '==') { /* Long option requires an argument. Take the next argument if one wasn't specified. */; if (!strlen($opt_arg) && !(list(, $opt_arg) = each($args))) { return PEAR::raiseError("Console_Getopt: option --$opt requires an argument"); } } } else if ($opt_arg) { return PEAR::raiseError("Console_Getopt: option --$opt doesn't allow an argument"); } $opts[] = array('--' . $opt, $opt_arg); return; } return PEAR::raiseError("Console_Getopt: unrecognized option --$opt"); } /** * Safely read the $argv PHP array across different PHP configurations. * Will take care on register_globals and register_argc_argv ini directives * * @access public * @return mixed the $argv PHP array or PEAR error if not registered */ function readPHPArgv() { global $argv; if (!is_array($argv)) { if (!@is_array($_SERVER['argv'])) { if (!@is_array($GLOBALS['HTTP_SERVER_VARS']['argv'])) { return PEAR::raiseError("Console_Getopt: Could not read cmd args (register_argc_argv=Off?)"); } return $GLOBALS['HTTP_SERVER_VARS']['argv']; } return $_SERVER['argv']; } return $argv; } } ?>