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sfYamlInline.php 0000666 00000025701 15252544611 0007665 0 ustar 00 <?php
/*
* This file is part of the symfony package.
* (c) Fabien Potencier <fabien.potencier@symfony-project.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
if (!defined('_ECRIRE_INC_VERSION')) return;
/**
* sfYamlInline implements a YAML parser/dumper for the YAML inline syntax.
*
* @package symfony
* @subpackage yaml
* @author Fabien Potencier <fabien.potencier@symfony-project.com>
* @version SVN: $Id: sfYamlInline.class.php 16177 2009-03-11 08:32:48Z fabien $
*/
class sfYamlInline
{
/**
* Convert a YAML string to a PHP array.
*
* @param string $value A YAML string
*
* @return array A PHP array representing the YAML string
*/
static public function load($value)
{
$value = trim($value);
if (0 == strlen($value))
{
return '';
}
switch ($value[0])
{
case '[':
return self::parseSequence($value);
case '{':
return self::parseMapping($value);
default:
return self::parseScalar($value);
}
}
/**
* Dumps a given PHP variable to a YAML string.
*
* @param mixed $value The PHP variable to convert
*
* @return string The YAML string representing the PHP array
*/
static public function dump($value)
{
$trueValues = '1.1' == sfYaml::getSpecVersion() ? array('true', 'on', '+', 'yes', 'y') : array('true');
$falseValues = '1.1' == sfYaml::getSpecVersion() ? array('false', 'off', '-', 'no', 'n') : array('false');
switch (true)
{
case is_resource($value):
throw new InvalidArgumentException('Unable to dump PHP resources in a YAML file.');
case is_object($value):
return '!!php/object:'.serialize($value);
case is_array($value):
return self::dumpArray($value);
case null === $value:
return 'null';
case true === $value:
return 'true';
case false === $value:
return 'false';
case ctype_digit($value):
return is_string($value) ? "'$value'" : (int) $value;
case is_numeric($value):
return is_infinite($value) ? str_ireplace('INF', '.Inf', strval($value)) : (is_string($value) ? "'$value'" : $value);
case false !== strpos($value, "\n"):
return sprintf('"%s"', str_replace(array('"', "\n", "\r"), array('\\"', '\n', '\r'), $value));
case preg_match('/[ \s \' " \: \{ \} \[ \] , & \* \#] | \A[ - ? | < > = ! % @ ]/x', $value):
return sprintf("'%s'", str_replace('\'', '\'\'', $value));
case '' == $value:
return "''";
case preg_match(self::getTimestampRegex(), $value):
return "'$value'";
case in_array(strtolower($value), $trueValues):
return "'$value'";
case in_array(strtolower($value), $falseValues):
return "'$value'";
case in_array(strtolower($value), array('null', '~')):
return "'$value'";
default:
return $value;
}
}
/**
* Dumps a PHP array to a YAML string.
*
* @param array $value The PHP array to dump
*
* @return string The YAML string representing the PHP array
*/
static protected function dumpArray($value)
{
// array
$keys = array_keys($value);
if (
(1 == count($keys) && '0' == $keys[0])
||
(count($keys) > 1 && array_reduce($keys, create_function('$v,$w', 'return (integer) $v + $w;'), 0) == count($keys) * (count($keys) - 1) / 2))
{
$output = array();
foreach ($value as $val)
{
$output[] = self::dump($val);
}
return sprintf('[%s]', implode(', ', $output));
}
// mapping
$output = array();
foreach ($value as $key => $val)
{
$output[] = sprintf('%s: %s', self::dump($key), self::dump($val));
}
return sprintf('{ %s }', implode(', ', $output));
}
/**
* Parses a scalar to a YAML string.
*
* @param scalar $scalar
* @param string $delimiters
* @param array $stringDelimiter
* @param integer $i
* @param boolean $evaluate
*
* @return string A YAML string
*/
static public function parseScalar($scalar, $delimiters = null, $stringDelimiters = array('"', "'"), &$i = 0, $evaluate = true)
{
if (in_array($scalar[$i], $stringDelimiters))
{
// quoted scalar
$output = self::parseQuotedScalar($scalar, $i);
// skip next delimiter
++$i;
}
else
{
// "normal" string
if (!$delimiters)
{
$output = substr($scalar, $i);
$i += strlen($output);
// remove comments
if (false !== $strpos = strpos($output, ' #'))
{
$output = rtrim(substr($output, 0, $strpos));
}
}
else if (preg_match('/^(.+?)('.implode('|', $delimiters).')/', substr($scalar, $i), $match))
{
$output = $match[1];
$i += strlen($output);
}
else
{
throw new InvalidArgumentException(sprintf('Malformed inline YAML string (%s).', $scalar));
}
$output = $evaluate ? self::evaluateScalar($output) : $output;
}
return $output;
}
/**
* Parses a quoted scalar to YAML.
*
* @param string $scalar
* @param integer $i
*
* @return string A YAML string
*/
static protected function parseQuotedScalar($scalar, &$i)
{
$delimiter = $scalar[$i];
++$i;
$buffer = '';
$len = strlen($scalar);
$escaped = '"' == $delimiter ? '\\"' : "''";
while ($i < $len)
{
if (isset($scalar[$i + 1]) && $escaped == $scalar[$i].$scalar[$i + 1])
{
$buffer .= $delimiter;
++$i;
}
else if ($delimiter == $scalar[$i])
{
break;
}
else
{
$buffer .= $scalar[$i];
}
++$i;
}
if ('"' == $delimiter)
{
// evaluate the string
$buffer = str_replace(array('\\n', '\\r'), array("\n", "\r"), $buffer);
if (strpos($buffer,'\\x')!==false){
$buffer = preg_replace_callback(',\\\\x([0-9a-f]+),', create_function('$m', 'return chr(hexdec($m[1]));'), $buffer);
}
}
return $buffer;
}
/**
* Parses a sequence to a YAML string.
*
* @param string $sequence
* @param integer $i
*
* @return string A YAML string
*/
static protected function parseSequence($sequence, &$i = 0)
{
$output = array();
$len = strlen($sequence);
$i += 1;
// [foo, bar, ...]
while ($i < $len)
{
switch ($sequence[$i])
{
case '[':
// nested sequence
$output[] = self::parseSequence($sequence, $i);
break;
case '{':
// nested mapping
$output[] = self::parseMapping($sequence, $i);
break;
case ']':
return $output;
case ',':
case ' ':
break;
default:
$isQuoted = in_array($sequence[$i], array('"', "'"));
$value = self::parseScalar($sequence, array(',', ']'), array('"', "'"), $i);
if (!$isQuoted && false !== strpos($value, ': '))
{
// embedded mapping?
try
{
$value = self::parseMapping('{'.$value.'}');
}
catch (InvalidArgumentException $e)
{
// no, it's not
}
}
$output[] = $value;
--$i;
}
++$i;
}
throw new InvalidArgumentException(sprintf('Malformed inline YAML string %s', $sequence));
}
/**
* Parses a mapping to a YAML string.
*
* @param string $mapping
* @param integer $i
*
* @return string A YAML string
*/
static protected function parseMapping($mapping, &$i = 0)
{
$output = array();
$len = strlen($mapping);
$i += 1;
// {foo: bar, bar:foo, ...}
while ($i < $len)
{
switch ($mapping[$i])
{
case ' ':
case ',':
++$i;
continue 2;
case '}':
return $output;
}
// key
$key = self::parseScalar($mapping, array(':', ' '), array('"', "'"), $i, false);
// value
$done = false;
while ($i < $len)
{
switch ($mapping[$i])
{
case '[':
// nested sequence
$output[$key] = self::parseSequence($mapping, $i);
$done = true;
break;
case '{':
// nested mapping
$output[$key] = self::parseMapping($mapping, $i);
$done = true;
break;
case ':':
case ' ':
break;
default:
$output[$key] = self::parseScalar($mapping, array(',', '}'), array('"', "'"), $i);
$done = true;
--$i;
}
++$i;
if ($done)
{
continue 2;
}
}
}
throw new InvalidArgumentException(sprintf('Malformed inline YAML string %s', $mapping));
}
/**
* Evaluates scalars and replaces magic values.
*
* @param string $scalar
*
* @return string A YAML string
*/
static protected function evaluateScalar($scalar)
{
$scalar = trim($scalar);
$trueValues = '1.1' == sfYaml::getSpecVersion() ? array('true', 'on', '+', 'yes', 'y') : array('true');
$falseValues = '1.1' == sfYaml::getSpecVersion() ? array('false', 'off', '-', 'no', 'n') : array('false');
switch (true)
{
case 'null' == strtolower($scalar):
case '' == $scalar:
case '~' == $scalar:
return null;
case 0 === strpos($scalar, '!str'):
return (string) substr($scalar, 5);
case 0 === strpos($scalar, '! '):
return intval(self::parseScalar(substr($scalar, 2)));
case 0 === strpos($scalar, '!!php/object:'):
return unserialize(substr($scalar, 13));
case ctype_digit($scalar):
$raw = $scalar;
$cast = intval($scalar);
return '0' == $scalar[0] ? octdec($scalar) : (((string) $raw == (string) $cast) ? $cast : $raw);
case in_array(strtolower($scalar), $trueValues):
return true;
case in_array(strtolower($scalar), $falseValues):
return false;
case is_numeric($scalar):
return '0x' == $scalar[0].$scalar[1] ? hexdec($scalar) : floatval($scalar);
case 0 == strcasecmp($scalar, '.inf'):
case 0 == strcasecmp($scalar, '.NaN'):
return -log(0);
case 0 == strcasecmp($scalar, '-.inf'):
return log(0);
case preg_match('/^(-|\+)?[0-9,]+(\.[0-9]+)?$/', $scalar):
return floatval(str_replace(',', '', $scalar));
case preg_match(self::getTimestampRegex(), $scalar):
return strtotime($scalar);
default:
return (string) $scalar;
}
}
static protected function getTimestampRegex()
{
return <<<EOF
~^
(?P<year>[0-9][0-9][0-9][0-9])
-(?P<month>[0-9][0-9]?)
-(?P<day>[0-9][0-9]?)
(?:(?:[Tt]|[ \t]+)
(?P<hour>[0-9][0-9]?)
:(?P<minute>[0-9][0-9])
:(?P<second>[0-9][0-9])
(?:\.(?P<fraction>[0-9]*))?
(?:[ \t]*(?P<tz>Z|(?P<tz_sign>[-+])(?P<tz_hour>[0-9][0-9]?)
(?::(?P<tz_minute>[0-9][0-9]))?))?)?
$~x
EOF;
}
}
sfYaml.php 0000666 00000007142 15252544611 0006525 0 ustar 00 <?php
/*
* This file is part of the symfony package.
* (c) 2004-2006 Fabien Potencier <fabien.potencier@symfony-project.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
if (!defined('_ECRIRE_INC_VERSION')) return;
/**
* sfYaml offers convenience methods to load and dump YAML.
*
* @package symfony
* @subpackage yaml
* @author Fabien Potencier <fabien.potencier@symfony-project.com>
* @version SVN: $Id: sfYaml.class.php 8988 2008-05-15 20:24:26Z fabien $
*/
class sfYaml
{
static protected
$spec = '1.2';
/**
* Sets the YAML specification version to use.
*
* @param string $version The YAML specification version
*/
static public function setSpecVersion($version)
{
if (!in_array($version, array('1.1', '1.2')))
{
throw new InvalidArgumentException(sprintf('Version %s of the YAML specifications is not supported', $version));
}
self::$spec = $version;
}
/**
* Gets the YAML specification version to use.
*
* @return string The YAML specification version
*/
static public function getSpecVersion()
{
return self::$spec;
}
/**
* Loads YAML into a PHP array.
*
* The load method, when supplied with a YAML stream (string or file),
* will do its best to convert YAML in a file into a PHP array.
*
* Usage:
* <code>
* $array = sfYaml::load('config.yml');
* print_r($array);
* </code>
*
* @param string $input Path of YAML file or string containing YAML
*
* @return array The YAML converted to a PHP array
*
* @throws InvalidArgumentException If the YAML is not valid
*/
public static function load($input)
{
$file = '';
// if input is a file, load it
if (strpos($input, "\n") === false && is_file($input))
{
$file = $input;
$content = $yaml = file_get_contents($input);
// if the file contains valid PHP, process it
if (strpos($content, '<'.'?') !== false
AND !(defined('_YAML_EVAL_PHP') AND !_YAML_EVAL_PHP))
{
ob_start();
$retval = eval('?'.'>'.$yaml);
$content = ob_get_clean();
// syntax error?
if ($retval === FALSE)
$content = $yaml;
}
// if an array is returned by the config file assume it's in plain php form else in YAML
$input = is_array($retval) ? $retval : $content;
}
// if an array is returned by the config file assume it's in plain php form else in YAML
if (is_array($input))
{
return $input;
}
require_once dirname(__FILE__).'/sfYamlParser.php';
$yaml = new sfYamlParser();
try
{
$ret = $yaml->parse($input);
}
catch (Exception $e)
{
throw new InvalidArgumentException(sprintf('Unable to parse %s: %s', $file ? sprintf('file "%s"', $file) : 'string', $e->getMessage()));
}
return $ret;
}
/**
* Dumps a PHP array to a YAML string.
*
* The dump method, when supplied with an array, will do its best
* to convert the array into friendly YAML.
*
* @param array $array PHP array
* @param integer $inline The level where you switch to inline YAML
*
* @return string A YAML string representing the original PHP array
*/
public static function dump($array, $inline = 2)
{
require_once dirname(__FILE__).'/sfYamlDumper.php';
$yaml = new sfYamlDumper();
return $yaml->dump($array, $inline);
}
}
/**
* Wraps echo to automatically provide a newline.
*
* @param string $string The string to echo with new line
*/
function echoln($string)
{
echo $string."\n";
}
sfYamlDumper.php 0000666 00000003312 15252544611 0007675 0 ustar 00 <?php
/*
* This file is part of the symfony package.
* (c) Fabien Potencier <fabien.potencier@symfony-project.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
if (!defined('_ECRIRE_INC_VERSION')) return;
require_once(dirname(__FILE__).'/sfYamlInline.php');
/**
* sfYamlDumper dumps PHP variables to YAML strings.
*
* @package symfony
* @subpackage yaml
* @author Fabien Potencier <fabien.potencier@symfony-project.com>
* @version SVN: $Id: sfYamlDumper.class.php 10575 2008-08-01 13:08:42Z nicolas $
*/
class sfYamlDumper
{
/**
* Dumps a PHP value to YAML.
*
* @param mixed $input The PHP value
* @param integer $inline The level where you switch to inline YAML
* @param integer $indent The level o indentation indentation (used internally)
*
* @return string The YAML representation of the PHP value
*/
public function dump($input, $inline = 0, $indent = 0)
{
$output = '';
$prefix = $indent ? str_repeat(' ', $indent) : '';
if ($inline <= 0 || !is_array($input) || empty($input))
{
$output .= $prefix.sfYamlInline::dump($input);
}
else
{
$isAHash = array_keys($input) !== range(0, count($input) - 1);
foreach ($input as $key => $value)
{
$willBeInlined = $inline - 1 <= 0 || !is_array($value) || empty($value);
$output .= sprintf('%s%s%s%s',
$prefix,
$isAHash ? sfYamlInline::dump($key).':' : '-',
$willBeInlined ? ' ' : "\n",
$this->dump($value, $inline - 1, $willBeInlined ? 0 : $indent + 2)
).($willBeInlined ? "\n" : '');
}
}
return $output;
}
}
sfYamlParser.php 0000666 00000034514 15252544611 0007705 0 ustar 00 <?php
/*
* This file is part of the symfony package.
* (c) Fabien Potencier <fabien.potencier@symfony-project.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
if (!defined('_ECRIRE_INC_VERSION')) return;
require_once(dirname(__FILE__).'/sfYamlInline.php');
/**
* sfYamlParser parses YAML strings to convert them to PHP arrays.
*
* @package symfony
* @subpackage yaml
* @author Fabien Potencier <fabien.potencier@symfony-project.com>
* @version SVN: $Id: sfYamlParser.class.php 10832 2008-08-13 07:46:08Z fabien $
*/
class sfYamlParser
{
protected
$value = '',
$offset = 0,
$lines = array(),
$currentLineNb = -1,
$currentLine = '',
$refs = array();
/**
* Constructor
*
* @param integer $offset The offset of YAML document (used for line numbers in error messages)
*/
public function __construct($offset = 0)
{
$this->offset = $offset;
}
/**
* Parses a YAML string to a PHP value.
*
* @param string $value A YAML string
*
* @return mixed A PHP value
*
* @throws InvalidArgumentException If the YAML is not valid
*/
public function parse($value)
{
$this->value = $this->cleanup($value);
$this->currentLineNb = -1;
$this->currentLine = '';
$this->lines = explode("\n", $this->value);
$data = array();
while ($this->moveToNextLine())
{
if ($this->isCurrentLineEmpty())
{
continue;
}
// tab?
if (preg_match('#^\t+#', $this->currentLine))
{
throw new InvalidArgumentException(sprintf('A YAML file cannot contain tabs as indentation at line %d (%s).', $this->getRealCurrentLineNb() + 1, $this->currentLine));
}
$isRef = $isInPlace = $isProcessed = false;
if (preg_match('#^\-(\s+(?P<value>.+?))?\s*$#', $this->currentLine, $values))
{
if (isset($values['value']) && preg_match('#^&(?P<ref>[^ ]+) *(?P<value>.*)#', $values['value'], $matches))
{
$isRef = $matches['ref'];
$values['value'] = $matches['value'];
}
// array
if (!isset($values['value']) || '' == trim($values['value'], ' ') || 0 === strpos(ltrim($values['value'], ' '), '#'))
{
$c = $this->getRealCurrentLineNb() + 1;
$parser = new sfYamlParser($c);
$parser->refs =& $this->refs;
$data[] = $parser->parse($this->getNextEmbedBlock());
}
else
{
if (preg_match('/^([^ ]+)\: +({.*?)$/', $values['value'], $matches))
{
$data[] = array($matches[1] => sfYamlInline::load($matches[2]));
}
else
{
$data[] = $this->parseValue($values['value']);
}
}
}
else if (preg_match('#^(?P<key>[^ ].*?) *\:(\s+(?P<value>.+?))?\s*$#', $this->currentLine, $values))
{
$key = sfYamlInline::parseScalar($values['key']);
if ('<<' === $key)
{
if (isset($values['value']) && '*' === substr($values['value'], 0, 1))
{
$isInPlace = substr($values['value'], 1);
if (!array_key_exists($isInPlace, $this->refs))
{
throw new InvalidArgumentException(sprintf('Reference "%s" does not exist at line %s (%s).', $isInPlace, $this->getRealCurrentLineNb() + 1, $this->currentLine));
}
}
else
{
if (isset($values['value']) && $values['value'] !== '')
{
$value = $values['value'];
}
else
{
$value = $this->getNextEmbedBlock();
}
$c = $this->getRealCurrentLineNb() + 1;
$parser = new sfYamlParser($c);
$parser->refs =& $this->refs;
$parsed = $parser->parse($value);
$merged = array();
if (!is_array($parsed))
{
throw new InvalidArgumentException(sprintf("YAML merge keys used with a scalar value instead of an array at line %s (%s)", $this->getRealCurrentLineNb() + 1, $this->currentLine));
}
else if (isset($parsed[0]))
{
// Numeric array, merge individual elements
foreach (array_reverse($parsed) as $parsedItem)
{
if (!is_array($parsedItem))
{
throw new InvalidArgumentException(sprintf("Merge items must be arrays at line %s (%s).", $this->getRealCurrentLineNb() + 1, $parsedItem));
}
$merged = array_merge($parsedItem, $merged);
}
}
else
{
// Associative array, merge
$merged = array_merge($merge, $parsed);
}
$isProcessed = $merged;
}
}
else if (isset($values['value']) && preg_match('#^&(?P<ref>[^ ]+) *(?P<value>.*)#', $values['value'], $matches))
{
$isRef = $matches['ref'];
$values['value'] = $matches['value'];
}
if ($isProcessed)
{
// Merge keys
$data = $isProcessed;
}
// hash
else if (!isset($values['value']) || '' == trim($values['value'], ' ') || 0 === strpos(ltrim($values['value'], ' '), '#'))
{
// if next line is less indented or equal, then it means that the current value is null
if ($this->isNextLineIndented())
{
$data[$key] = null;
}
else
{
$c = $this->getRealCurrentLineNb() + 1;
$parser = new sfYamlParser($c);
$parser->refs =& $this->refs;
$data[$key] = $parser->parse($this->getNextEmbedBlock());
}
}
else
{
if ($isInPlace)
{
$data = $this->refs[$isInPlace];
}
else
{
$data[$key] = $this->parseValue($values['value']);
}
}
}
else
{
// one liner?
if (1 == count(explode("\n", rtrim($this->value, "\n"))))
{
$value = sfYamlInline::load($this->lines[0]);
if (is_array($value))
{
$first = reset($value);
if ('*' === substr($first, 0, 1))
{
$data = array();
foreach ($value as $alias)
{
$data[] = $this->refs[substr($alias, 1)];
}
$value = $data;
}
}
return $value;
}
throw new InvalidArgumentException(sprintf('Unable to parse line %d (%s).', $this->getRealCurrentLineNb() + 1, $this->currentLine));
}
if ($isRef)
{
$this->refs[$isRef] = end($data);
}
}
return empty($data) ? null : $data;
}
/**
* Returns the current line number (takes the offset into account).
*
* @return integer The current line number
*/
protected function getRealCurrentLineNb()
{
return $this->currentLineNb + $this->offset;
}
/**
* Returns the current line indentation.
*
* @return integer The current line indentation
*/
protected function getCurrentLineIndentation()
{
return strlen($this->currentLine) - strlen(ltrim($this->currentLine, ' '));
}
/**
* Returns the next embed block of YAML.
*
* @return string A YAML string
*/
protected function getNextEmbedBlock()
{
$this->moveToNextLine();
$newIndent = $this->getCurrentLineIndentation();
if (!$this->isCurrentLineEmpty() && 0 == $newIndent)
{
throw new InvalidArgumentException(sprintf('Indentation problem at line %d (%s)', $this->getRealCurrentLineNb() + 1, $this->currentLine));
}
$data = array(substr($this->currentLine, $newIndent));
while ($this->moveToNextLine())
{
if ($this->isCurrentLineEmpty())
{
if ($this->isCurrentLineBlank())
{
$data[] = substr($this->currentLine, $newIndent);
}
continue;
}
$indent = $this->getCurrentLineIndentation();
if (preg_match('#^(?P<text> *)$#', $this->currentLine, $match))
{
// empty line
$data[] = $match['text'];
}
else if ($indent >= $newIndent)
{
$data[] = substr($this->currentLine, $newIndent);
}
else if (0 == $indent)
{
$this->moveToPreviousLine();
break;
}
else
{
throw new InvalidArgumentException(sprintf('Indentation problem at line %d (%s)', $this->getRealCurrentLineNb() + 1, $this->currentLine));
}
}
return implode("\n", $data);
}
/**
* Moves the parser to the next line.
*/
protected function moveToNextLine()
{
if ($this->currentLineNb >= count($this->lines) - 1)
{
return false;
}
$this->currentLine = $this->lines[++$this->currentLineNb];
return true;
}
/**
* Moves the parser to the previous line.
*/
protected function moveToPreviousLine()
{
$this->currentLine = $this->lines[--$this->currentLineNb];
}
/**
* Parses a YAML value.
*
* @param string $value A YAML value
*
* @return mixed A PHP value
*/
protected function parseValue($value)
{
if ('*' === substr($value, 0, 1))
{
if (false !== $pos = strpos($value, '#'))
{
$value = substr($value, 1, $pos - 2);
}
else
{
$value = substr($value, 1);
}
if (!array_key_exists($value, $this->refs))
{
throw new InvalidArgumentException(sprintf('Reference "%s" does not exist (%s).', $value, $this->currentLine));
}
return $this->refs[$value];
}
if (preg_match('/^(?P<separator>\||>)(?P<modifiers>\+|\-|\d+|\+\d+|\-\d+|\d+\+|\d+\-)?(?P<comments> +#.*)?$/', $value, $matches))
{
$modifiers = isset($matches['modifiers']) ? $matches['modifiers'] : '';
return $this->parseFoldedScalar($matches['separator'], preg_replace('#\d+#', '', $modifiers), intval(abs($modifiers)));
}
else
{
return sfYamlInline::load($value);
}
}
/**
* Parses a folded scalar.
*
* @param string $separator The separator that was used to begin this folded scalar (| or >)
* @param string $indicator The indicator that was used to begin this folded scalar (+ or -)
* @param integer $indentation The indentation that was used to begin this folded scalar
*
* @return string The text value
*/
protected function parseFoldedScalar($separator, $indicator = '', $indentation = 0)
{
$separator = '|' == $separator ? "\n" : ' ';
$text = '';
$notEOF = $this->moveToNextLine();
while ($notEOF && $this->isCurrentLineBlank())
{
$text .= "\n";
$notEOF = $this->moveToNextLine();
}
if (!$notEOF)
{
return '';
}
if (!preg_match('#^(?P<indent>'.($indentation ? str_repeat(' ', $indentation) : ' +').')(?P<text>.*)$#', $this->currentLine, $matches))
{
$this->moveToPreviousLine();
return '';
}
$textIndent = $matches['indent'];
$previousIndent = 0;
$text .= $matches['text'].$separator;
while ($this->currentLineNb + 1 < count($this->lines))
{
$this->moveToNextLine();
if (preg_match('#^(?P<indent> {'.strlen($textIndent).',})(?P<text>.+)$#', $this->currentLine, $matches))
{
if (' ' == $separator && $previousIndent != $matches['indent'])
{
$text = substr($text, 0, -1)."\n";
}
$previousIndent = $matches['indent'];
$text .= str_repeat(' ', $diff = strlen($matches['indent']) - strlen($textIndent)).$matches['text'].($diff ? "\n" : $separator);
}
else if (preg_match('#^(?P<text> *)$#', $this->currentLine, $matches))
{
$text .= preg_replace('#^ {1,'.strlen($textIndent).'}#', '', $matches['text'])."\n";
}
else
{
$this->moveToPreviousLine();
break;
}
}
if (' ' == $separator)
{
// replace last separator by a newline
$text = preg_replace('/ (\n*)$/', "\n$1", $text);
}
switch ($indicator)
{
case '':
$text = preg_replace('#\n+$#s', "\n", $text);
break;
case '+':
break;
case '-':
$text = preg_replace('#\n+$#s', '', $text);
break;
}
return $text;
}
/**
* Returns true if the next line is indented.
*
* @return Boolean Returns true if the next line is indented, false otherwise
*/
protected function isNextLineIndented()
{
$currentIndentation = $this->getCurrentLineIndentation();
$notEOF = $this->moveToNextLine();
while ($notEOF && $this->isCurrentLineEmpty())
{
$notEOF = $this->moveToNextLine();
}
if (false === $notEOF)
{
return false;
}
$ret = false;
if ($this->getCurrentLineIndentation() <= $currentIndentation)
{
$ret = true;
}
$this->moveToPreviousLine();
return $ret;
}
/**
* Returns true if the current line is blank or if it is a comment line.
*
* @return Boolean Returns true if the current line is empty or if it is a comment line, false otherwise
*/
protected function isCurrentLineEmpty()
{
return $this->isCurrentLineBlank() || $this->isCurrentLineComment();
}
/**
* Returns true if the current line is blank.
*
* @return Boolean Returns true if the current line is blank, false otherwise
*/
protected function isCurrentLineBlank()
{
return '' == trim($this->currentLine, ' ');
}
/**
* Returns true if the current line is a comment line.
*
* @return Boolean Returns true if the current line is a comment line, false otherwise
*/
protected function isCurrentLineComment()
{
//checking explicitly the first char of the trim is faster than loops or strpos
$ltrimmedLine = ltrim($this->currentLine, ' ');
return $ltrimmedLine[0] === '#';
}
/**
* Cleanups a YAML string to be parsed.
*
* @param string $value The input YAML string
*
* @return string A cleaned up YAML string
*/
protected function cleanup($value)
{
$value = str_replace(array("\r\n", "\r"), "\n", $value);
if (!preg_match("#\n$#", $value))
{
$value .= "\n";
}
// strip YAML header
preg_replace('#^\%YAML[: ][\d\.]+.*\n#s', '', $value);
// remove ---
$value = preg_replace('#^\-\-\-.*?\n#s', '', $value);
return $value;
}
}