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<?php
/**
* This file is part of the Latte (https://latte.nette.org)
* Copyright (c) 2008 David Grudl (https://davidgrudl.com)
*/
declare(strict_types=1);
namespace Latte;
/**
* PHP helpers.
* @internal
*/
class PhpHelpers
{
/**
* Optimizes code readability.
*/
public static function reformatCode(string $source): string
{
$res = $php = '';
$lastChar = ';';
$tokens = new \ArrayIterator(token_get_all($source));
$level = $openLevel = 0;
$lineLength = 100;
$specialBrace = false;
foreach ($tokens as $n => $token) {
$next = $tokens[$n + 1] ?? [null, ''];
if (is_array($token)) {
[$name, $token] = ($tmp = $token);
if ($name === T_INLINE_HTML) {
$res .= $token;
} elseif ($name === T_OPEN_TAG) {
$openLevel = $level;
} elseif ($name === T_CLOSE_TAG) {
if ($next[0] === T_OPEN_TAG) { // remove ?)<?php
if (!strspn($lastChar, ';{:/' . ($specialBrace ? '' : '}'))) {
$php = rtrim($php) . ($lastChar = ';') . "\n" . str_repeat("\t", $level);
} elseif (substr($next[1], -1) === "\n") {
$php .= "\n" . str_repeat("\t", $level);
}
$tokens->next();
} else {
if (trim($php) !== '' || substr($res, -1) === '<') { // skip <?php ?) but preserve <<?php
$inline = strpos($php, "\n") === false && strlen($res) - strrpos($res, "\n") < $lineLength;
$res .= '<?php' . ($inline ? ' ' : "\n" . str_repeat("\t", $openLevel));
if (strpos($next[1], "\n") === false) {
$token = rtrim($token, "\n");
} else {
$php = rtrim($php, "\t");
}
$res .= $php . $token;
}
$php = '';
$lastChar = ';';
}
} elseif ($name === T_ELSE || $name === T_ELSEIF) {
if ($next === ':' && $lastChar === '}') {
$php .= ';'; // semicolon needed in if(): ... if() ... else:
}
$lastChar = '';
$php .= $token;
} elseif ($name === T_DOC_COMMENT || $name === T_COMMENT) {
$php .= preg_replace("#\n[ \t]*+(?!\n)#", "\n" . str_repeat("\t", $level), $token);
} elseif ($name === T_WHITESPACE) {
$prev = $tokens[$n - 1];
$lines = substr_count($token, "\n");
if ($prev === '}' && in_array($next[0], [T_ELSE, T_ELSEIF, T_CATCH, T_FINALLY], true)) {
$token = ' ';
} elseif ($prev === '{' || $prev === '}' || $prev === ';' || $lines) {
$token = str_repeat("\n", max(1, $lines)) . str_repeat("\t", $level); // indent last line
} elseif ($prev[0] === T_OPEN_TAG) {
$token = '';
}
$php .= $token;
} elseif ($name === T_OBJECT_OPERATOR) {
$lastChar = '->';
$php .= $token;
} else {
if (in_array($name, [T_CURLY_OPEN, T_DOLLAR_OPEN_CURLY_BRACES], true)) {
$level++;
}
$lastChar = '';
$php .= $token;
}
} else {
if ($token === '{' || $token === '[') {
$level++;
if ($lastChar === '->' || $lastChar === '$') {
$specialBrace = true;
}
} elseif ($token === '}' || $token === ']') {
$level--;
$php .= "\x08";
} elseif ($token === ';') {
$specialBrace = false;
if ($next[0] !== T_WHITESPACE) {
$token .= "\n" . str_repeat("\t", $level); // indent last line
}
}
$lastChar = $token;
$php .= $token;
}
}
if ($php) {
$res .= "<?php\n" . str_repeat("\t", $openLevel) . $php;
}
$res = str_replace(["\t\x08", "\x08"], '', $res);
return $res;
}
/**
* @param mixed $value
*/
public static function dump($value, bool $multiline = false): string
{
if (is_array($value)) {
$indexed = $value && array_keys($value) === range(0, count($value) - 1);
$s = '';
foreach ($value as $k => $v) {
$s .= $multiline
? ($s === '' ? "\n" : '') . "\t" . ($indexed ? '' : self::dump($k) . ' => ') . self::dump($v) . ",\n"
: ($s === '' ? '' : ', ') . ($indexed ? '' : self::dump($k) . ' => ') . self::dump($v);
}
return '[' . $s . ']';
} elseif ($value === null) {
return 'null';
} else {
return var_export($value, true);
}
}
public static function inlineHtmlToEcho(string $source): string
{
$res = '';
$tokens = token_get_all($source);
for ($i = 0; $i < \count($tokens); $i++) {
$token = $tokens[$i];
if (is_array($token)) {
if ($token[0] === T_INLINE_HTML) {
$str = $token[1];
$n = $i + 1;
while (isset($tokens[$n])) {
if ($tokens[$n][0] === T_INLINE_HTML) {
$str .= $tokens[$n][1];
$i = $n;
} elseif (
$tokens[$n][0] !== T_OPEN_TAG
&& $tokens[$n][0] !== T_CLOSE_TAG
&& $tokens[$n][0] !== T_WHITESPACE
) {
break;
}
$n++;
}
$export = $str === "\n" ? '"\n"' : var_export($str, true);
$res .= "<?php echo $export ?>";
continue;
}
$res .= $token[1];
} else {
$res .= $token;
}
}
return $res;
}
}