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<?php |
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namespace Gettext\Utils; |
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class PhpFunctionsScanner extends FunctionsScanner |
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{ |
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protected $tokens; |
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/** |
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* Constructor. |
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* |
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* @param string $code The php code to scan |
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*/ |
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public function __construct($code) |
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{ |
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$this->tokens = token_get_all($code); |
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} |
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/** |
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* Decodes a T_CONSTANT_ENCAPSED_STRING string. |
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* |
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* @param string $value |
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* |
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* @return string |
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*/ |
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public static function decodeString($value) |
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{ |
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$result = ''; |
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if ($value[0] === "'" || strpos($value, '$') === false) { |
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if (strpos($value, '\\') === false) { |
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$result = substr($value, 1, -1); |
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} else { |
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$result = eval("return $value;"); |
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} |
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} else { |
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$value = substr($value, 1, -1); |
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while (($p = strpos($value, '\\')) !== false) { |
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if (!isset($value[$p + 1])) { |
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break; |
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} |
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if ($p > 0) { |
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$result .= substr($value, 0, $p); |
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} |
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$value = substr($value, $p + 1); |
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$p = strpos($value, '$'); |
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if ($p === false) { |
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$result .= eval('return "\\'.$value.'";'); |
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$value = ''; |
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break; |
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} |
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if ($p === 0) { |
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$result .= '$'; |
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$value = substr($value, 1); |
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} else { |
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$result .= eval('return "\\'.substr($value, 0, $p).'";'); |
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$value = substr($value, $p); |
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} |
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} |
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$result .= $value; |
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} |
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return $result; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getFunctions() |
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{ |
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$count = count($this->tokens); |
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$bufferFunctions = array(); |
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$functions = array(); |
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$simpleDoubleQuote = array( |
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'n' => "\n", |
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'r' => "\r", |
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't' => "\t", |
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'v' => "\v", |
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'e' => "\f", |
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'\\' => '\\', |
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'$' => '$', |
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'"' => '"', |
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); |
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for ($k = 0; $k < $count; ++$k) { |
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$value = $this->tokens[$k]; |
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//close the current function |
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if (is_string($value)) { |
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if ($value === ')' && isset($bufferFunctions[0])) { |
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$functions[] = array_shift($bufferFunctions); |
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} |
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continue; |
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} |
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//add an argument to the current function |
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if (isset($bufferFunctions[0]) && ($value[0] === T_CONSTANT_ENCAPSED_STRING)) { |
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$bufferFunctions[0][2][] = static::decodeString($value[1]); |
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continue; |
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} |
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//new function found |
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if (($value[0] === T_STRING) && is_string($this->tokens[$k + 1]) && ($this->tokens[$k + 1] === '(')) { |
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array_unshift($bufferFunctions, array($value[1], $value[2], array())); |
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++$k; |
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continue; |
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} |
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} |
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return $functions; |
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} |
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} |
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oscarotero /
Gettext
This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently.
Both the
$myVarassignment in line 1 and the$higherassignment in line 2 are dead. The first because$myVaris never used and the second because$higheris always overwritten for every possible time line.