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<?php
/**
* Matomo - free/libre analytics platform
*
* @link https://matomo.org
* @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
*/
namespace Matomo\Ini;
/**
* Reads INI configuration.
*/
class IniReader
{
/**
* @var bool
*/
private $useNativeFunction;
public function __construct()
{
$this->useNativeFunction = function_exists('parse_ini_string');
}
/**
* Reads a INI configuration file and returns it as an array.
*
* The array returned is multidimensional, indexed by section names:
*
* ```
* array(
* 'Section 1' => array(
* 'value1' => 'hello',
* 'value2' => 'world',
* ),
* 'Section 2' => array(
* 'value3' => 'foo',
* )
* );
* ```
*
* @param string $filename The file to read.
* @throws IniReadingException
* @return array
*/
public function readFile($filename)
{
$ini = $this->getContentOfIniFile($filename);
return $this->readString($ini);
}
/**
* Reads a INI configuration string and returns it as an array.
*
* The array returned is multidimensional, indexed by section names:
*
* ```
* array(
* 'Section 1' => array(
* 'value1' => 'hello',
* 'value2' => 'world',
* ),
* 'Section 2' => array(
* 'value3' => 'foo',
* )
* );
* ```
*
* @param string $ini String containing INI configuration.
* @throws IniReadingException
* @return array
*/
public function readString($ini)
{
// On PHP 5.3.3 an empty line return is needed at the end
// See http://3v4l.org/jD1Lh
$ini .= "\n";
if ($this->useNativeFunction) {
$array = $this->readWithNativeFunction($ini);
} else {
$array = $this->readWithAlternativeImplementation($ini);
}
return $array;
}
/**
* @param string $ini
* @throws IniReadingException
* @return array
*/
private function readWithNativeFunction($ini)
{
$array = @parse_ini_string($ini, true);
if ($array === false) {
$e = error_get_last();
throw new \Matomo\Ini\IniReadingException('Syntax error in INI configuration: ' . $e['message']);
}
// We cannot use INI_SCANNER_RAW by default because it is buggy under PHP 5.3.14 and 5.4.4
// http://3v4l.org/m24cT
$rawValues = @parse_ini_string($ini, true, INI_SCANNER_RAW);
if ($rawValues === false) {
return $this->decode($array, $array);
}
$array = $this->decode($array, $rawValues);
return $array;
}
private function getContentOfIniFile($filename)
{
if (!file_exists($filename) || !is_readable($filename)) {
throw new \Matomo\Ini\IniReadingException(sprintf("The file %s doesn't exist or is not readable", $filename));
}
$content = $this->getFileContent($filename);
if ($content === false) {
throw new \Matomo\Ini\IniReadingException(sprintf('Impossible to read the file %s', $filename));
}
return $content;
}
/**
* Reads ini comments for each key.
*
* The array returned is multidimensional, indexed by section names:
*
* ```
* array(
* 'Section 1' => array(
* 'key1' => 'comment 1',
* 'key2' => 'comment 2',
* ),
* 'Section 2' => array(
* 'key3' => 'comment 3',
* )
* );
* ```
*
* @param string $filename The path to a file.
* @throws IniReadingException
* @return array
*/
public function readComments($filename)
{
$ini = $this->getContentOfIniFile($filename);
$ini = $this->splitIniContentIntoLines($ini);
$descriptions = array();
$section = '';
$lastComment = '';
foreach ($ini as $line) {
$line = trim($line);
if (strpos($line, '[') === 0) {
$tmp = explode(']', $line);
$section = trim(substr($tmp[0], 1));
$descriptions[$section] = array();
$lastComment = '';
continue;
}
if ($line === '') {
$lastComment = "\n";
continue;
}
if (!preg_match('/^[a-zA-Z0-9[]/', $line)) {
if (strpos($line, ';') === 0) {
$line = trim(substr($line, 1));
}
// comment
$lastComment .= $line . "\n";
continue;
}
[$key, $value] = explode('=', $line, 2);
$key = trim($key);
if (strpos($key, '[]') === strlen($key) - 2) {
$key = substr($key, 0, -2);
}
if (empty($descriptions[$section][$key])) {
$descriptions[$section][$key] = $lastComment;
}
$lastComment = '';
}
return $descriptions;
}
private function splitIniContentIntoLines($ini)
{
if (is_string($ini)) {
$ini = explode("\n", str_replace("\r", "\n", $ini));
}
return $ini;
}
/**
* Reimplementation in case `parse_ini_file()` is disabled.
*
* @author Andrew Sohn <asohn (at) aircanopy (dot) net>
* @author anthon (dot) pang (at) gmail (dot) com
*
* @param string $ini
* @return array
*/
private function readWithAlternativeImplementation($ini)
{
$ini = $this->splitIniContentIntoLines($ini);
if (count($ini) == 0) {
return array();
}
$sections = array();
$values = array();
$result = array();
$globals = array();
$i = 0;
foreach ($ini as $line) {
$line = trim($line);
$line = str_replace("\t", " ", $line);
// Comments
if (!preg_match('/^[a-zA-Z0-9[]/', $line)) {
continue;
}
// Sections
if ($line[0] == '[') {
$tmp = explode(']', $line);
$sections[] = trim(substr($tmp[0], 1));
$i++;
continue;
}
// Key-value pair
[$key, $value] = explode('=', $line, 2);
$key = trim($key);
$value = trim($value);
if (strstr($value, ";")) {
$tmp = explode(';', $value);
if (count($tmp) == 2) {
if ($value[0] != '"' && $value[0] != "'" || preg_match('/^".*"\\s*;/', $value) || preg_match('/^".*;[^"]*$/', $value) || preg_match("/^'.*'\\s*;/", $value) || preg_match("/^'.*;[^']*\$/", $value)) {
$value = $tmp[0];
}
} else {
if ($value[0] == '"') {
$value = preg_replace('/^"(.*)".*/', '$1', $value);
} elseif ($value[0] == "'") {
$value = preg_replace("/^'(.*)'.*/", '$1', $value);
} else {
$value = $tmp[0];
}
}
}
$value = trim($value);
// Special keywords
if ($value === 'true' || $value === 'yes' || $value === 'on') {
$value = true;
} elseif ($value === 'false' || $value === 'no' || $value === 'off') {
$value = false;
} elseif ($value === '' || $value === 'null') {
$value = null;
}
if (is_string($value)) {
if (preg_match('/^"(.*)"$/', $value)) {
$value = preg_replace('/^"(.*)"$/', '$1', $value);
$value = str_replace('\\"', '"', $value);
} elseif (preg_match("/^'(.*)'\$/", $value)) {
$value = preg_replace("/^'(.*)'\$/", '$1', $value);
$value = str_replace("\\'", "'", $value);
} else {
$value = trim($value, "'\"");
}
}
if ($i == 0) {
if (substr($key, -2) == '[]') {
$globals[substr($key, 0, -2)][] = $value;
} else {
$globals[$key] = $value;
}
} else {
if (substr($key, -2) == '[]') {
$values[$i - 1][substr($key, 0, -2)][] = $value;
} else {
$values[$i - 1][$key] = $value;
}
}
}
for ($j = 0; $j < $i; $j++) {
if (isset($values[$j])) {
$result[$sections[$j]] = $values[$j];
} else {
$result[$sections[$j]] = array();
}
}
$finalResult = $result + $globals;
return $this->decode($finalResult, $finalResult);
}
/**
* @param string $filename
* @return bool|string Returns false if failure.
*/
private function getFileContent($filename)
{
if (function_exists('file_get_contents')) {
return file_get_contents($filename);
} elseif (function_exists('file')) {
$ini = file($filename);
if ($ini !== false) {
return implode("\n", $ini);
}
} elseif (function_exists('fopen') && function_exists('fread')) {
$handle = fopen($filename, 'r');
if (!$handle) {
return false;
}
$ini = fread($handle, filesize($filename));
fclose($handle);
return $ini;
}
return false;
}
/**
* We have to decode values manually because parse_ini_file() has a poor implementation.
*
* @param mixed $value The array decoded by `parse_ini_file`
* @param mixed $rawValue The same array but with raw strings, so that we can re-decode manually
* and override the poor job of `parse_ini_file`
* @return mixed
*/
private function decode($value, $rawValue)
{
if (is_array($value)) {
foreach ($value as $i => &$subValue) {
$subValue = $this->decode($subValue, $rawValue[$i]);
}
return $value;
}
if (!is_string($value)) {
return $value;
}
$value = $this->decodeBoolean($value, $rawValue);
$value = $this->decodeNull($value, $rawValue);
if (is_numeric($value) && $this->noLossWhenCastToInt($value)) {
return $value + 0;
}
return $value;
}
private function decodeBoolean($value, $rawValue)
{
if ($value === '1' && ($rawValue === 'true' || $rawValue === 'yes' || $rawValue === 'on')) {
return true;
}
if ($value === '' && ($rawValue === 'false' || $rawValue === 'no' || $rawValue === 'off')) {
return false;
}
return $value;
}
private function decodeNull($value, $rawValue)
{
if ($value === '' && $rawValue === 'null') {
return null;
}
return $value;
}
private function noLossWhenCastToInt($value)
{
return (string) ($value + 0) === $value;
}
/**
* @return bool
*/
public function isUseNativeFunction()
{
return $this->useNativeFunction;
}
/**
* @param bool $useNativeFunction
*
* @return IniReader
*/
public function setUseNativeFunction($useNativeFunction)
{
$this->useNativeFunction = $useNativeFunction;
return $this;
}
}