X-Git-Url: http://git.cyclocoop.org/?p=velocampus%2Fweb%2Fwww.git;a=blobdiff_plain;f=www%2Fplugins%2Fauto%2Fyaml%2Fsfyaml%2FsfYamlParser.php;fp=www%2Fplugins%2Fauto%2Fyaml%2Fsfyaml%2FsfYamlParser.php;h=baa5f76e2269896848c719cbc77aec04e3c486be;hp=0000000000000000000000000000000000000000;hb=80b4d3e85f78d402ed2e73f8f5d1bf4c19962eed;hpb=aaf970bf4cdaf76689ecc10609048e18d073820c

diff --git a/www/plugins/auto/yaml/sfyaml/sfYamlParser.php b/www/plugins/auto/yaml/sfyaml/sfYamlParser.php
new file mode 100644
index 0000000..baa5f76
--- /dev/null
+++ b/www/plugins/auto/yaml/sfyaml/sfYamlParser.php
@@ -0,0 +1,540 @@
+<?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.
+ */
+
+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;
+  }
+}