original_string: function _validateValue($entry, $wholeentry)
      {
          //There is no @ allowed if the entry is enclosed by braces
          if (preg_match('/^{.*@.*}$/', $entry)) {
              $this->_generateWarning('WARNING_AT_IN_BRACES', $entry, $wholeentry);
          }
          //No escaped " allowed if the entry is enclosed by double quotes
          if (preg_match('/^\".*\\".*\"$/', $entry)) {
              $this->_generateWarning('WARNING_ESCAPED_DOUBLE_QUOTE_INSIDE_DOUBLE_QUOTES', $entry, $wholeentry);
          }
          //Amount of Braces is not correct
          $open = 0;
          $lastchar = '';
          $char = '';
          for ($i = 0; $i < strlen($entry); $i++) {
              $char = substr($entry, $i, 1);
              if (('{' == $char) && ('\\' != $lastchar)) {
                  $open++;
              }
              if (('}' == $char) && ('\\' != $lastchar)) {
                  $open--;
              }
              $lastchar = $char;
          }
          if (0 != $open) {
              $this->_generateWarning('WARNING_UNBALANCED_AMOUNT_OF_BRACES', $entry, $wholeentry);
          }
      }
code: function _validateValue($entry, $wholeentry)
      {
          //There is no @ allowed if the entry is enclosed by braces
          if (preg_match('/^{.*@.*}$/', $entry)) {
              $this->_generateWarning('WARNING_AT_IN_BRACES', $entry, $wholeentry);
          }
          //No escaped " allowed if the entry is enclosed by double quotes
          if (preg_match('/^\".*\\".*\"$/', $entry)) {
              $this->_generateWarning('WARNING_ESCAPED_DOUBLE_QUOTE_INSIDE_DOUBLE_QUOTES', $entry, $wholeentry);
          }
          //Amount of Braces is not correct
          $open = 0;
          $lastchar = '';
          $char = '';
          for ($i = 0; $i < strlen($entry); $i++) {
              $char = substr($entry, $i, 1);
              if (('{' == $char) && ('\\' != $lastchar)) {
                  $open++;
              }
              if (('}' == $char) && ('\\' != $lastchar)) {
                  $open--;
              }
              $lastchar = $char;
          }
          if (0 != $open) {
              $this->_generateWarning('WARNING_UNBALANCED_AMOUNT_OF_BRACES', $entry, $wholeentry);
          }
      }
code_tokens: function _validateValue ( $ entry , $ wholeentry ) { //There is no @ allowed if the entry is enclosed by braces if ( preg_match ( '/^{.*@.*}$/' , $ entry ) ) { $ this -> _generateWarning ( 'WARNING_AT_IN_BRACES' , $ entry , $ wholeentry ) ; } //No escaped " allowed if the entry is enclosed by double quotes if ( preg_match ( '/^\".*\\".*\"$/' , $ entry ) ) { $ this -> _generateWarning ( 'WARNING_ESCAPED_DOUBLE_QUOTE_INSIDE_DOUBLE_QUOTES' , $ entry , $ wholeentry ) ; } //Amount of Braces is not correct $ open = 0 ; $ lastchar = '' ; $ char = '' ; for ( $ i = 0 ; $ i < strlen ( $ entry ) ; $ i ++ ) { $ char = substr ( $ entry , $ i , 1 ) ; if ( ( '{' == $ char ) && ( '\\' != $ lastchar ) ) { $ open ++ ; } if ( ( '}' == $ char ) && ( '\\' != $ lastchar ) ) { $ open -- ; } $ lastchar = $ char ; } if ( 0 != $ open ) { $ this -> _generateWarning ( 'WARNING_UNBALANCED_AMOUNT_OF_BRACES' , $ entry , $ wholeentry ) ; } }
docstring: Validation of a value
  
  There may be several problems with the value of a field.
  These problems exist but do not break the parsing.
  If a problem is detected a warning is appended to the array warnings.
  
  @access private
  @param string $entry The entry aka one line which which should be validated
  @param string $wholeentry The whole BibTex Entry which the one line is part of
  @return void
docstring_tokens: Validation of a value