53 lines
1.8 KiB
PHP
53 lines
1.8 KiB
PHP
<?php
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$actions = [];
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class Action {
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private $function_name;
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private $no_of_args;
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private $args_type;
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public function setFunctionName(string $s) { $this->function_name = $s; return $this; }
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public function setArgumentsTypes(array $a) { $this->args_type = $a; $this->no_of_args = count($a); return $this; }
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public function getExpectedNoOfArguments() { return $this->no_of_args; }
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public function getFunctionName() { return $this->function_name; }
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}
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function registerAction(Action $a) { global $actions; $actions[$a->getFunctionName()] = $a; return true;}
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// Register all actions available
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require_once __DIR__."/actions/index.php";
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function ResolveActions(string $text) {
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global $actions;
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$function_name_regex_format = "@([a-zA-Z_][a-zA-Z0-9_]+)";
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$arguments_regex_format = "([\w:\/\.-]+)";
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if (preg_match("/$function_name_regex_format( |$)/",$text,$matches)) {
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$function_name = $matches[1];
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if ( !isset($actions[$function_name]) ||
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!function_exists($function_name )) return "[[ Action $function_name not available. ]]";
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$action = $actions[$function_name];
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// Fetch the arguments
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$reg_exp = array_fill(0,$action->getExpectedNoOfArguments(),"([\w:\/\.-]+)");
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array_unshift($reg_exp, $function_name_regex_format);
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if (!preg_match("/".implode(" ",$reg_exp)."/",$text,$matches))
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return "[[ Action $function_name was passed with wrong number of arguemnts. Expected: ".$a->getExpectedNoOfArguments()." ]]";
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$full_action_requested_string = $matches[0];
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array_shift($matches); // Clip the first whole-string result
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array_shift($matches); // Clip the function name
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$arguments = $matches;
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$actionResult = call_user_func_array($function_name, $arguments);
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$text = str_replace($full_action_requested_string,$actionResult,$text);
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}
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return $text;
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}
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