madlisp/run.php

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PHP
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<?php
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require(__DIR__ . '/vendor/autoload.php');
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if (php_sapi_name() != 'cli') {
exit('Currently only cli usage is supported.');
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}
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function ml_repl($lisp)
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{
// Read history
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$historyFile = $_SERVER['HOME'] . DIRECTORY_SEPARATOR . '.madlisp_history';
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if (is_readable($historyFile)) {
readline_read_history($historyFile);
}
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while (true) {
$input = readline('> ');
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try {
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$lisp->rep($input, true);
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} catch (MadLisp\MadLispException $ex) {
print('error: ' . $ex->getMessage());
} catch (TypeError $ex) {
print('error: invalid argument type: ' . $ex->getMessage());
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}
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print(PHP_EOL);
if ($input) {
readline_add_history($input);
readline_write_history($historyFile);
}
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}
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}
// Create the Lisp interpreter
$factory = new MadLisp\LispFactory();
$lisp = $factory->make();
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// Load the user's init file if present
$initfile = $_SERVER['HOME'] . DIRECTORY_SEPARATOR . '.madlisp_init';
if (is_readable($initfile)) {
$lisp->readEval("(load \"$initfile\")");
}
if ($argc < 2) {
// Read input from stdin
$input = file_get_contents('php://stdin');
$lisp->rep($input, false);
} elseif ($argv[1] == '-r') {
// Run the repl
ml_repl($lisp);
} elseif ($argv[1] == '-e') {
// Evaluate next argument
$lisp->rep($argv[2] ?? '', false);
} elseif ($argv[1] == '-h') {
// Show help
print("Usage:" . PHP_EOL);
print("-e <code> :: Evaluate code" . PHP_EOL);
print("-h :: Show this help" . PHP_EOL);
print("-r :: Run the interactive Repl" . PHP_EOL);
print("<filename> :: Evaluate file" . PHP_EOL);
print("<no arguments> :: Read from stdin" . PHP_EOL);
} else {
// Read file
$file = $argv[1];
if (is_readable($file)) {
$input = "(load \"$file\")";
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$lisp->rep($input, false);
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} else {
print("Unable to read file: $file\n");
exit(1); // exit with error code
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}
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}