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<?php
/*
getopts by ALeX Kazik
Code: https://github.com/alexkazik/getopts
Docs: https://github.com/alexkazik/getopts/wiki/Documentation
Homepage: http://alex.kazik.de/195/getopts/
License: Creative Commons Attribution 3.0 Unported License
http://creativecommons.org/licenses/by/3.0/
*/
function getopts($params, $args=NULL, $raw=false){
// check input
if(!is_array($params)){
trigger_error('Invalid params table', E_USER_ERROR);
}
if($args === NULL && is_array($_SERVER['argv'])){
$args = $_SERVER['argv'];
array_shift($args);
}
if(!is_array($args)){
trigger_error('Invalid args table', E_USER_ERROR);
}
if(!is_bool($raw)){
trigger_error('Invalid raw option', E_USER_ERROR);
}
// mb_substr, which returns '' in case of an empty mb_substr (usually false)
$mb_substr = function ($string, $start, $length = null) { // is not used, only for definition
$ret = call_user_func_array('mb_substr', func_get_args());
if ($ret === false){
return '';
} else {
return $ret;
}
};
// get arg (either implicit or the following)
$get_arg = function (&$next, &$args, &$num) { // pass by reference: num may be changed, others: performance
if ($next !== true) {
return $next;
} elseif ($num + 1 >= count($args)){
return false;
} else {
$num += 1;
return $args[$num];
}
};
// all types & subtypes
$types_subtypes = ['S' => 'stcr', 'V' => 'smar', 'O' => 'smar', 'A' => 'sr'];
// output
$Ores = [];
$Oerr = [];
$Oags = [];
// parsed options
$short = [];
$long = [];
$type = [];
// parse options
foreach($params AS $opt => $names){
if(is_string($names)){
$names = preg_split('/ +/', $names);
}
if(!is_array($names) || count($names) < 2){
trigger_error('Invalid type/name(s) to param "'.$opt.'"', E_USER_ERROR);
}
$ty = array_shift($names);
if(!is_string($ty) || mb_strlen($ty) < 1 || mb_strlen($ty) > 2){
trigger_error('Invalid type to param "'.$opt.'"', E_USER_ERROR);
}
$ty0 = $ty[0];
if(!isset($types_subtypes[$ty0])){
trigger_error('Invalid type to param "'.$opt.'"', E_USER_ERROR);
}
if(mb_strlen($ty) == 1){
$ty1 = $types_subtypes[$ty0][0];
}else{
$ty1 = $ty[1];
if(mb_strpos($types_subtypes[$ty0], $ty1) === false){
trigger_error('Invalid type to param "'.$opt.'"', E_USER_ERROR);
}
}
$type[$opt] = $ty0.$ty1;
foreach($names AS $name){
if(!is_string($name)){
trigger_error('Invalid names to param "'.$opt.'"', E_USER_ERROR);
}
if(!preg_match('!^(-)?([0-9a-zA-Z]+)$!', $name, $r)){
trigger_error('Invalid name to param "'.$opt.'"', E_USER_ERROR);
}
if($r[1] == '-' || mb_strlen($r[2]) > 1){
if(isset($long[$r[2]])){
trigger_error('Duplicate option name "'.$r[2].'"', E_USER_ERROR);
}
$long[$r[2]] = $opt;
}else{
if(isset($short[$r[2]])){
trigger_error('Duplicate option name "'.$r[2].'"', E_USER_ERROR);
}
$short[$r[2]] = $opt;
}
}
$Ores[$opt] = [];
}
// parse arguments
for($num=0; $num<count($args); $num++){
$arg = $args[$num];
if($arg == '--'){
// end of options, copy all other args
$num++;
for(; $num<count($args); $num++){
$Oags[] = $args[$num];
}
break;
}else if($arg == ''){
// empty -> skip
continue;
}else if($arg[0] != '-'){
// not an option -> copy to args
$Oags[] = $arg;
continue;
}
// this arg is an option!
if($arg[1] == '-'){
// long option
$p = mb_strpos($arg, '=');
if($p !== false){
$next = $mb_substr($arg, $p+1);
$arg = mb_substr($arg, 2, $p-2);
}else{
$next = true;
$arg = mb_substr($arg, 2);
}
if(!isset($long[$arg])){
$Oerr[] = 'Unknown option "--'.$arg.'"';
}else{
$opt = $long[$arg];
$Earg = '--'.$arg;
switch($type[$opt][0]){
case 'S':
$Ores[$opt][] = $next;
break;
case 'V':
if(($val = $get_arg($next,$args,$num)) === false){
$Oerr[] = 'Missing artument to option "'.$Earg.'"';
}else{
$Ores[$opt][] = $val;
}
break;
case 'O':
$Ores[$opt][] = $next;
break;
case 'A':
if(($val = $get_arg($next,$args,$num)) === false){
$Oerr[] = 'Missing artument to option "'.$Earg.'"';
}else{
$p = mb_strpos($val, '=');
if($p === false){
$Oerr[] = 'Malformed artument to option "'.$Earg.'" (a "=" is missing)';
}else if(isset($Ores[$opt][mb_substr($val, 0, $p)])){
$Oerr[] = 'Duplicate key "'.mb_substr($val, 0, $p).'" to option "'.$Earg.'"';
}else{
$Ores[$opt][mb_substr($val, 0, $p)] = $mb_substr($val, $p+1);
}
}
break;
}
}
}else{
// short option(s)
for($i=1; $i<mb_strlen($arg); $i++){
$c = $arg[$i];
$next = $mb_substr($arg, $i+1);
if($next == ''){
$next = true;
}else if($next[0] == '='){
$next = $mb_substr($next, 1);
}
if(!isset($short[$c])){
$Oerr[] = 'Unknown option "-'.$c.'"';
$i = mb_strlen($arg);
}else{
$opt = $short[$c];
$Earg = '-'.$c;
switch($type[$opt][0]){
case 'S':
$Ores[$opt][] = true;
break;
case 'V':
if(($val = $get_arg($next,$args,$num)) === false){
$Oerr[] = 'Missing artument to option "'.$Earg.'"';
}else{
$Ores[$opt][] = $val;
}
$i = mb_strlen($arg);
break;
case 'O':
$Ores[$opt][] = $next;
$i = mb_strlen($arg);
break;
case 'A':
if(($val = $get_arg($next,$args,$num)) === false){
$Oerr[] = 'Missing artument to option "'.$Earg.'"';
}else{
$p = mb_strpos($val, '=');
if($p === false){
$Oerr[] = 'Malformed artument to option "'.$Earg.'" (a "=" is missing)';
}else if(isset($Ores[$opt][mb_substr($val, 0, $p)])){
$Oerr[] = 'Duplicate key "'.mb_substr($val, 0, $p).'" to option "'.$Earg.'"';
}else{
$Ores[$opt][mb_substr($val, 0, $p)] = $mb_substr($val, $p+1);
}
}
$i = mb_strlen($arg);
break;
}
}
}
}
}
// reformat result
if(!$raw){
foreach($Ores AS $opt => &$r){
switch($type[$opt]){
case 'Ss':
$r = count($r) > 0;
break;
case 'St':
$r = (count($r) & 1) == 1;
break;
case 'Sc':
$r = count($r);
break;
case 'Vs':
if(count($r) == 0){
// no option
$r = false;
}else{
// pick last entry
$r = array_pop($r);
}
break;
case 'Os':
if(count($r) == 0){
// no option
$r = false;
}else{
// pick last entry; if possible last used (non true) entry
do{
$rr = array_pop($r);
}while($rr === true && count($r) > 0);
$r = $rr;
}
break;
case 'Vm':
case 'Om':
if(count($r) == 0){
// no option
$r = false;
}else{
// as array
// (already done)
}
break;
case 'Va':
case 'Oa':
// false if none, direct (string) if only one, array otherwise
if(count($r) == 0){
// no option
$r = false;
}else if(count($r) == 1){
// a single option
$r = array_pop($r);
}else{
// as array
// (already done)
}
break;
case 'As':
// as array
// (already done)
break;
}
}
}
// errors?
if(count($Oerr) == 0){
$Oerr = false;
}
// result
return [$Oerr, $Ores, $Oags];
}
?>
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