public function Parser::parse in Service Container 7
Same name and namespace in other branches
- 7.2 modules/providers/service_container_symfony/lib/Symfony/Component/Yaml/Parser.php \Symfony\Component\Yaml\Parser::parse()
Parses a YAML string to a PHP value.
Parameters
string $value A YAML string:
bool $exceptionOnInvalidType true if an exception must be thrown on invalid types (a PHP resource or object), false otherwise:
bool $objectSupport true if object support is enabled, false otherwise:
bool $objectForMap true if maps should return a stdClass instead of array():
Return value
mixed A PHP value
Throws
ParseException If the YAML is not valid
File
- modules/
providers/ service_container_symfony/ lib/ Symfony/ Component/ Yaml/ Parser.php, line 53
Class
- Parser
- Parser parses YAML strings to convert them to PHP arrays.
Namespace
Symfony\Component\YamlCode
public function parse($value, $exceptionOnInvalidType = false, $objectSupport = false, $objectForMap = false) {
if (!preg_match('//u', $value)) {
throw new ParseException('The YAML value does not appear to be valid UTF-8.');
}
$this->currentLineNb = -1;
$this->currentLine = '';
$value = $this
->cleanup($value);
$this->lines = explode("\n", $value);
if (function_exists('mb_internal_encoding') && (int) ini_get('mbstring.func_overload') & 2) {
$mbEncoding = mb_internal_encoding();
mb_internal_encoding('UTF-8');
}
$data = array();
$context = null;
$allowOverwrite = false;
while ($this
->moveToNextLine()) {
if ($this
->isCurrentLineEmpty()) {
continue;
}
// tab?
if ("\t" === $this->currentLine[0]) {
throw new ParseException('A YAML file cannot contain tabs as indentation.', $this
->getRealCurrentLineNb() + 1, $this->currentLine);
}
$isRef = $mergeNode = false;
if (preg_match('#^\\-((?P<leadspaces>\\s+)(?P<value>.+?))?\\s*$#u', $this->currentLine, $values)) {
if ($context && 'mapping' == $context) {
throw new ParseException('You cannot define a sequence item when in a mapping');
}
$context = 'sequence';
if (isset($values['value']) && preg_match('#^&(?P<ref>[^ ]+) *(?P<value>.*)#u', $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;
$parser = new self($c);
$parser->refs =& $this->refs;
$data[] = $parser
->parse($this
->getNextEmbedBlock(null, true), $exceptionOnInvalidType, $objectSupport, $objectForMap);
}
else {
if (isset($values['leadspaces']) && preg_match('#^(?P<key>' . Inline::REGEX_QUOTED_STRING . '|[^ \'"\\{\\[].*?) *\\:(\\s+(?P<value>.+?))?\\s*$#u', $values['value'], $matches)) {
// this is a compact notation element, add to next block and parse
$c = $this
->getRealCurrentLineNb();
$parser = new self($c);
$parser->refs =& $this->refs;
$block = $values['value'];
if ($this
->isNextLineIndented()) {
$block .= "\n" . $this
->getNextEmbedBlock($this
->getCurrentLineIndentation() + strlen($values['leadspaces']) + 1);
}
$data[] = $parser
->parse($block, $exceptionOnInvalidType, $objectSupport, $objectForMap);
}
else {
$data[] = $this
->parseValue($values['value'], $exceptionOnInvalidType, $objectSupport, $objectForMap);
}
}
}
elseif (preg_match('#^(?P<key>' . Inline::REGEX_QUOTED_STRING . '|[^ \'"\\[\\{].*?) *\\:(\\s+(?P<value>.+?))?\\s*$#u', $this->currentLine, $values) && (false === strpos($values['key'], ' #') || in_array($values['key'][0], array(
'"',
"'",
)))) {
if ($context && 'sequence' == $context) {
throw new ParseException('You cannot define a mapping item when in a sequence');
}
$context = 'mapping';
// force correct settings
Inline::parse(null, $exceptionOnInvalidType, $objectSupport, $objectForMap, $this->refs);
try {
$key = Inline::parseScalar($values['key']);
} catch (ParseException $e) {
$e
->setParsedLine($this
->getRealCurrentLineNb() + 1);
$e
->setSnippet($this->currentLine);
throw $e;
}
if ('<<' === $key) {
$mergeNode = true;
$allowOverwrite = true;
if (isset($values['value']) && 0 === strpos($values['value'], '*')) {
$refName = substr($values['value'], 1);
if (!array_key_exists($refName, $this->refs)) {
throw new ParseException(sprintf('Reference "%s" does not exist.', $refName), $this
->getRealCurrentLineNb() + 1, $this->currentLine);
}
$refValue = $this->refs[$refName];
if (!is_array($refValue)) {
throw new ParseException('YAML merge keys used with a scalar value instead of an array.', $this
->getRealCurrentLineNb() + 1, $this->currentLine);
}
foreach ($refValue as $key => $value) {
if (!isset($data[$key])) {
$data[$key] = $value;
}
}
}
else {
if (isset($values['value']) && $values['value'] !== '') {
$value = $values['value'];
}
else {
$value = $this
->getNextEmbedBlock();
}
$c = $this
->getRealCurrentLineNb() + 1;
$parser = new self($c);
$parser->refs =& $this->refs;
$parsed = $parser
->parse($value, $exceptionOnInvalidType, $objectSupport, $objectForMap);
if (!is_array($parsed)) {
throw new ParseException('YAML merge keys used with a scalar value instead of an array.', $this
->getRealCurrentLineNb() + 1, $this->currentLine);
}
if (isset($parsed[0])) {
// If the value associated with the merge key is a sequence, then this sequence is expected to contain mapping nodes
// and each of these nodes is merged in turn according to its order in the sequence. Keys in mapping nodes earlier
// in the sequence override keys specified in later mapping nodes.
foreach ($parsed as $parsedItem) {
if (!is_array($parsedItem)) {
throw new ParseException('Merge items must be arrays.', $this
->getRealCurrentLineNb() + 1, $parsedItem);
}
foreach ($parsedItem as $key => $value) {
if (!isset($data[$key])) {
$data[$key] = $value;
}
}
}
}
else {
// If the value associated with the key is a single mapping node, each of its key/value pairs is inserted into the
// current mapping, unless the key already exists in it.
foreach ($parsed as $key => $value) {
if (!isset($data[$key])) {
$data[$key] = $value;
}
}
}
}
}
elseif (isset($values['value']) && preg_match('#^&(?P<ref>[^ ]+) *(?P<value>.*)#u', $values['value'], $matches)) {
$isRef = $matches['ref'];
$values['value'] = $matches['value'];
}
if ($mergeNode) {
// Merge keys
}
elseif (!isset($values['value']) || '' == trim($values['value'], ' ') || 0 === strpos(ltrim($values['value'], ' '), '#')) {
// hash
// if next line is less indented or equal, then it means that the current value is null
if (!$this
->isNextLineIndented() && !$this
->isNextLineUnIndentedCollection()) {
// Spec: Keys MUST be unique; first one wins.
// But overwriting is allowed when a merge node is used in current block.
if ($allowOverwrite || !isset($data[$key])) {
$data[$key] = null;
}
}
else {
$c = $this
->getRealCurrentLineNb() + 1;
$parser = new self($c);
$parser->refs =& $this->refs;
$value = $parser
->parse($this
->getNextEmbedBlock(), $exceptionOnInvalidType, $objectSupport, $objectForMap);
// Spec: Keys MUST be unique; first one wins.
// But overwriting is allowed when a merge node is used in current block.
if ($allowOverwrite || !isset($data[$key])) {
$data[$key] = $value;
}
}
}
else {
$value = $this
->parseValue($values['value'], $exceptionOnInvalidType, $objectSupport, $objectForMap);
// Spec: Keys MUST be unique; first one wins.
// But overwriting is allowed when a merge node is used in current block.
if ($allowOverwrite || !isset($data[$key])) {
$data[$key] = $value;
}
}
}
else {
// multiple documents are not supported
if ('---' === $this->currentLine) {
throw new ParseException('Multiple documents are not supported.');
}
// 1-liner optionally followed by newline(s)
if ($this->lines[0] === trim($value)) {
try {
$value = Inline::parse($this->lines[0], $exceptionOnInvalidType, $objectSupport, $objectForMap, $this->refs);
} catch (ParseException $e) {
$e
->setParsedLine($this
->getRealCurrentLineNb() + 1);
$e
->setSnippet($this->currentLine);
throw $e;
}
if (is_array($value)) {
$first = reset($value);
if (is_string($first) && 0 === strpos($first, '*')) {
$data = array();
foreach ($value as $alias) {
$data[] = $this->refs[substr($alias, 1)];
}
$value = $data;
}
}
if (isset($mbEncoding)) {
mb_internal_encoding($mbEncoding);
}
return $value;
}
switch (preg_last_error()) {
case PREG_INTERNAL_ERROR:
$error = 'Internal PCRE error.';
break;
case PREG_BACKTRACK_LIMIT_ERROR:
$error = 'pcre.backtrack_limit reached.';
break;
case PREG_RECURSION_LIMIT_ERROR:
$error = 'pcre.recursion_limit reached.';
break;
case PREG_BAD_UTF8_ERROR:
$error = 'Malformed UTF-8 data.';
break;
case PREG_BAD_UTF8_OFFSET_ERROR:
$error = 'Offset doesn\'t correspond to the begin of a valid UTF-8 code point.';
break;
default:
$error = 'Unable to parse.';
}
throw new ParseException($error, $this
->getRealCurrentLineNb() + 1, $this->currentLine);
}
if ($isRef) {
$this->refs[$isRef] = end($data);
}
}
if (isset($mbEncoding)) {
mb_internal_encoding($mbEncoding);
}
return empty($data) ? null : $data;
}