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<?php
/**
* Source Code Highlighting
*
* The classes in this file are responsible for the dynamic @example, and
* <programlisting role="tutorial"> tags output. Using the
* WordParser, the phpDocumentor_TutorialHighlightParser
* retrieves PHP tokens one by one from the array generated by
* {@link WordParser} source retrieval functions
* and then highlights them individually.
*
* It accomplishes this highlighting through the assistance of methods in
* the output Converter passed to its parse() method, and then returns the
* fully highlighted source as a string
*
* phpDocumentor :: automatic documentation generator
*
* PHP versions 4 and 5
*
* Copyright (c) 2003-2006 Gregory Beaver
*
* LICENSE:
*
* This library is free software; you can redistribute it
* and/or modify it under the terms of the GNU Lesser General
* Public License as published by the Free Software Foundation;
* either version 2.1 of the License, or (at your option) any
* later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* @package phpDocumentor
* @subpackage Parsers
* @author Gregory Beaver <cellog@php.net>
* @copyright 2003-2006 Gregory Beaver
* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
* @version CVS: $Id: TutorialHighlightParser.inc,v 1.4 2006/05/01 04:13:51 cellog Exp $
* @tutorial tags.example.pkg, tags.filesource.pkg
* @link http://www.phpdoc.org
* @link http://pear.php.net/PhpDocumentor
* @since 1.3.0
*/
/**
* Highlights source code using {@link parse()}
* @package phpDocumentor
* @subpackage Parsers
*/
class phpDocumentor_TutorialHighlightParser extends Parser
{
/**#@+ @access private */
/**
* Highlighted source is built up in this string
* @var string
*/
var $_output;
/**
* contents of the current source code line as it is parsed
* @var string
*/
var $_line;
/**
* Used to retrieve highlighted tokens
* @var Converter a descendant of Converter
*/
var $_converter;
/**
* Path to file being highlighted, if this is from a @filesource tag
* @var false|string full path
*/
var $_filesourcepath;
/**
* @var array
*/
var $eventHandlers = array(
TUTORIAL_EVENT_NOEVENTS => 'defaultHandler',
TUTORIAL_EVENT_ITAG => 'defaultHandler',
TUTORIAL_EVENT_ATTRIBUTE => 'attrHandler',
TUTORIAL_EVENT_OPENTAG => 'defaultHandler',
TUTORIAL_EVENT_CLOSETAG => 'defaultHandler',
TUTORIAL_EVENT_ENTITY => 'defaultHandler',
TUTORIAL_EVENT_COMMENT => 'defaultHandler',
TUTORIAL_EVENT_SINGLEQUOTE => 'defaultHandler',
TUTORIAL_EVENT_DOUBLEQUOTE => 'defaultHandler',
);
/**#@-*/
/**
* @uses Converter::SourceLine() encloses {@link $_line} in a
* converter-specific format
*/
function newLineNum()
{
$this->_line .= $this->_converter->flushHighlightCache();
$this->_output .= $this->_converter->SourceLine($this->_pv_curline + 1, $this->_line, $this->_path);
$this->_line = '';
}
/**
* Start the parsing at a certain line number
*/
function setLineNum($num)
{
$this->_wp->linenum = $num;
}
/**
* Parse a new file
*
* The parse() method is a do...while() loop that retrieves tokens one by
* one from the {@link $_event_stack}, and uses the token event array set up
* by the class constructor to call event handlers.
*
* The event handlers each process the tokens passed to them, and use the
* {@link _addoutput()} method to append the processed tokens to the
* {@link $_line} variable. The word parser calls {@link newLineNum()}
* every time a line is reached.
*
* In addition, the event handlers use special linking functions
* {@link _link()} and its cousins (_classlink(), etc.) to create in-code
* hyperlinks to the documentation for source code elements that are in the
* source code.
*
* @uses setupStates() initialize parser state variables
* @uses configWordParser() pass $parse_data to prepare retrieval of tokens
* @param string
* @param Converter
* @param false|string full path to file with @filesource tag, if this
* is a @filesource parse
* @param false|integer starting line number from {@}source linenum}
* @staticvar integer used for recursion limiting if a handler for
* an event is not found
* @return bool
*/
function parse ($parse_data, &$converter, $filesourcepath = false, $linenum = false)
{
static $endrecur = 0;
$parse_data = str_replace(array("\r\n", "\t"), array("\n", ' '), $parse_data);
$this->_converter = &$converter;
$converter->startHighlight();
$this->_path = $filesourcepath;
$this->setupStates($parse_data);
$this->configWordParser(TUTORIAL_EVENT_NOEVENTS);
if ($linenum !== false) $this->setLineNum($linenum);
// initialize variables so E_ALL error_reporting doesn't complain
$pevent = 0;
$word = 0;
do
{
$lpevent = $pevent;
$pevent = $this->_event_stack->getEvent();
if ($lpevent != $pevent)
{
$this->_last_pevent = $lpevent;
$this->configWordParser($pevent);
}
$this->_wp->setWhitespace(true);
$dbg_linenum = $this->_wp->linenum;
$dbg_pos = $this->_wp->getPos();
$this->_pv_last_word = $word;
$this->_pv_curline = $this->_wp->linenum;
$word = $this->_wp->getWord();
if (0)//PHPDOCUMENTOR_DEBUG == true)
{
echo "LAST: ";
echo "|" . $this->_pv_last_word;
echo "|\n";
echo "PEVENT: " . $this->getParserEventName($pevent) . "\n";
echo "LASTPEVENT: " . $this->getParserEventName($this->_last_pevent) . "\n";
// echo "LINE: ".$this->_line."\n";
// echo "OUTPUT: ".$this->_output."\n";
echo $dbg_linenum.'-'.$dbg_pos . ": ";
echo '|'.htmlspecialchars($word);
echo "|\n";
echo "-------------------\n\n\n";
flush();
}
if (isset($this->eventHandlers[$pevent]))
{
$handle = $this->eventHandlers[$pevent];
$this->$handle($word, $pevent);
} else
{
debug('WARNING: possible error, no handler for event number '.$pevent);
if ($endrecur++ == 25)
{
die("FATAL ERROR, recursion limit reached");
}
}
} while (!($word === false));
if (strlen($this->_line)) $this->newLineNum();
return $this->_output;
}
/**#@+
* Event Handlers
*
* All Event Handlers use {@link checkEventPush()} and
* {@link checkEventPop()} to set up the event stack and parser state.
* @access private
* @param string|array token value
* @param integer parser event from {@link Parser.inc}
*/
/**
* Most tokens only need highlighting, and this method handles them
*/
function defaultHandler($word, $pevent)
{
if ($word == "\n") {
$this->newLineNum();
return;
}
if ($this->checkEventPush($word, $pevent)) {
$this->_wp->backupPos($word);
return;
}
$this->_addoutput($word);
$this->checkEventPop($word, $pevent);
}
/**
* Most tokens only need highlighting, and this method handles them
*/
function attrHandler($word, $pevent)
{
if ($word == "\n") {
$this->newLineNum();
return;
}
if ($e = $this->checkEventPush($word, $pevent)) {
if ($e == TUTORIAL_EVENT_SINGLEQUOTE || $e == TUTORIAL_EVENT_DOUBLEQUOTE) {
$this->_addoutput($word);
}
return;
}
if ($this->checkEventPop($word, $pevent)) {
$this->_wp->backupPos($word);
return;
}
$this->_addoutput($word);
}
/**#@+
* Output Methods
* @access private
*/
/**
* This method adds output to {@link $_line}
*
* If a string with variables like "$test this" is present, then special
* handling is used to allow processing of the variable in context.
* @see _flush_save()
*/
function _addoutput($word, $preformatted = false)
{
$type =
array(
TUTORIAL_EVENT_ATTRIBUTE => 'attribute',
TUTORIAL_EVENT_SINGLEQUOTE => 'attributevalue',
TUTORIAL_EVENT_DOUBLEQUOTE => 'attributevalue',
TUTORIAL_EVENT_CLOSETAG => 'closetag',
TUTORIAL_EVENT_ENTITY => 'entity',
TUTORIAL_EVENT_ITAG => 'itag',
TUTORIAL_EVENT_OPENTAG => 'opentag',
TUTORIAL_EVENT_COMMENT => 'comment',
);
$a = $this->_event_stack->getEvent();
if (in_array($a, array_keys($type))) {
$this->_line .= $this->_converter->highlightTutorialSource($type[$a], $word);
} else {
$this->_line .= $this->_converter->flushHighlightCache();
$this->_line .= $this->_converter->postProcess($word);
}
}
/**#@-*/
/**
* tell the parser's WordParser {@link $wp} to set up tokens to parse words by.
* tokens are word separators. In English, a space or punctuation are examples of tokens.
* In PHP, a token can be a ;, a parenthesis, or even the word "function"
* @param $value integer an event number
* @see WordParser
*/
function configWordParser($e)
{
$this->_wp->setSeperator($this->tokens[($e + 100)]);
}
/**
* this function checks whether parameter $word is a token for pushing a new event onto the Event Stack.
* @return mixed returns false, or the event number
*/
function checkEventPush($word,$pevent)
{
$e = false;
if (isset($this->pushEvent[$pevent]))
{
if (isset($this->pushEvent[$pevent][strtolower($word)]))
$e = $this->pushEvent[$pevent][strtolower($word)];
}
if ($e)
{
$this->_event_stack->pushEvent($e);
return $e;
} else {
return false;
}
}
/**
* this function checks whether parameter $word is a token for popping the current event off of the Event Stack.
* @return mixed returns false, or the event number popped off of the stack
*/
function checkEventPop($word,$pevent)
{
if (!isset($this->popEvent[$pevent])) return false;
if (in_array(strtolower($word),$this->popEvent[$pevent]))
{
return $this->_event_stack->popEvent();
} else {
return false;
}
}
/**
* Initialize all parser state variables
* @param boolean true if we are highlighting an inline {@}source} tag's
* output
* @param false|string name of class we are going to start from
* @uses $_wp sets to a new {@link phpDocumentor_HighlightWordParser}
*/
function setupStates($parsedata)
{
$this->_output = '';
$this->_line = '';
unset($this->_wp);
$this->_wp = new WordParser;
$this->_wp->setup($parsedata);
$this->_event_stack = new EventStack;
$this->_event_stack->popEvent();
$this->_event_stack->pushEvent(TUTORIAL_EVENT_NOEVENTS);
$this->_pv_linenum = null;
$this->_pv_next_word = false;
}
/**
* Initialize the {@link $tokenpushEvent, $wordpushEvent} arrays
*/
function phpDocumentor_TutorialHighlightParser()
{
$this->allowableInlineTags = $GLOBALS['_phpDocumentor_inline_tutorial_tags_allowed'];
$this->inlineTagHandlers = array('*' => 'handleDefaultInlineTag');
$this->tokens[STATE_TUTORIAL_NOEVENTS] = array("\n",'{@', '<!--', '</', '<', '&');
$this->tokens[STATE_TUTORIAL_ITAG] = array("\n","}");
$this->tokens[STATE_TUTORIAL_OPENTAG] = array("\n","\t"," ", '>', '/>');
$this->tokens[STATE_TUTORIAL_CLOSETAG] = array("\n",'>');
$this->tokens[STATE_TUTORIAL_COMMENT] = array("\n",'-->');
$this->tokens[STATE_TUTORIAL_ENTITY] = array("\n",';');
$this->tokens[STATE_TUTORIAL_ATTRIBUTE] = array("\n",'"',"'",'>','/>');
$this->tokens[STATE_TUTORIAL_DOUBLEQUOTE] = array("\n",'"','&','{@');
$this->tokens[STATE_TUTORIAL_SINGLEQUOTE] = array("\n","'",'&','{@');
/**************************************************************/
$this->pushEvent[TUTORIAL_EVENT_NOEVENTS] =
array(
"{@" => TUTORIAL_EVENT_ITAG,
'<' => TUTORIAL_EVENT_OPENTAG,
'</' => TUTORIAL_EVENT_CLOSETAG,
'&' => TUTORIAL_EVENT_ENTITY,
'<!--' => TUTORIAL_EVENT_COMMENT,
);
/**************************************************************/
$this->pushEvent[TUTORIAL_EVENT_OPENTAG] =
array(
" " => TUTORIAL_EVENT_ATTRIBUTE,
"\n" => TUTORIAL_EVENT_ATTRIBUTE,
);
/**************************************************************/
$this->pushEvent[TUTORIAL_EVENT_ATTRIBUTE] =
array(
"'" => TUTORIAL_EVENT_SINGLEQUOTE,
'"' => TUTORIAL_EVENT_DOUBLEQUOTE,
);
/**************************************************************/
$this->pushEvent[TUTORIAL_EVENT_SINGLEQUOTE] =
array(
'&' => TUTORIAL_EVENT_ENTITY,
'{@' => TUTORIAL_EVENT_ITAG,
);
/**************************************************************/
$this->pushEvent[TUTORIAL_EVENT_DOUBLEQUOTE] =
array(
'&' => TUTORIAL_EVENT_ENTITY,
'{@' => TUTORIAL_EVENT_ITAG,
);
/**************************************************************/
$this->popEvent[TUTORIAL_EVENT_ENTITY] = array(';');
/**************************************************************/
$this->popEvent[TUTORIAL_EVENT_SINGLEQUOTE] = array("'");
/**************************************************************/
$this->popEvent[TUTORIAL_EVENT_DOUBLEQUOTE] = array('"');
/**************************************************************/
$this->popEvent[TUTORIAL_EVENT_OPENTAG] = array('>', '/>');
/**************************************************************/
$this->popEvent[TUTORIAL_EVENT_CLOSETAG] = array('>');
/**************************************************************/
$this->popEvent[TUTORIAL_EVENT_COMMENT] = array('-->');
/**************************************************************/
$this->popEvent[TUTORIAL_EVENT_ATTRIBUTE] = array('>','/>');
/**************************************************************/
$this->popEvent[TUTORIAL_EVENT_ITAG] = array('}');
/**************************************************************/
}
function getParserEventName ($value)
{
$lookup = array(
TUTORIAL_EVENT_NOEVENTS => "TUTORIAL_EVENT_NOEVENTS",
TUTORIAL_EVENT_ITAG => "TUTORIAL_EVENT_ITAG",
TUTORIAL_EVENT_OPENTAG => "TUTORIAL_EVENT_OPENTAG",
TUTORIAL_EVENT_ATTRIBUTE => "TUTORIAL_EVENT_ATTRIBUTE",
TUTORIAL_EVENT_CLOSETAG => "TUTORIAL_EVENT_CLOSETAG",
TUTORIAL_EVENT_ENTITY => "TUTORIAL_EVENT_ENTITY",
TUTORIAL_EVENT_COMMENT => "TUTORIAL_EVENT_COMMENT",
TUTORIAL_EVENT_SINGLEQUOTE => "TUTORIAL_EVENT_SINGLEQUOTE",
TUTORIAL_EVENT_DOUBLEQUOTE => "TUTORIAL_EVENT_DOUBLEQUOTE",
);
if (isset($lookup[$value]))
return $lookup[$value];
else return $value;
}
}
/** starting state */
define("TUTORIAL_EVENT_NOEVENTS" , 1);
/** currently in starting state */
define("STATE_TUTORIAL_NOEVENTS" , 101);
/** used when an {@}inline tag} is found */
define("TUTORIAL_EVENT_ITAG" , 2);
/** currently parsing an {@}inline tag} */
define("STATE_TUTORIAL_ITAG" , 102);
/** used when an open <tag> is found */
define("TUTORIAL_EVENT_OPENTAG" , 3);
/** currently parsing an open <tag> */
define("STATE_TUTORIAL_OPENTAG" , 103);
/** used when a <tag attr="attribute"> is found */
define("TUTORIAL_EVENT_ATTRIBUTE" , 4);
/** currently parsing an open <tag> */
define("STATE_TUTORIAL_ATTRIBUTE" , 104);
/** used when a close </tag> is found */
define("TUTORIAL_EVENT_CLOSETAG" , 5);
/** currently parsing a close </tag> */
define("STATE_TUTORIAL_CLOSETAG" , 105);
/** used when an &entity; is found */
define("TUTORIAL_EVENT_ENTITY" , 6);
/** currently parsing an &entity; */
define("STATE_TUTORIAL_ENTITY" , 106);
/** used when a <!-- comment --> is found */
define("TUTORIAL_EVENT_COMMENT" , 7);
/** currently parsing a <!-- comment --> */
define("STATE_TUTORIAL_COMMENT" , 107);
/** used when a <!-- comment --> is found */
define("TUTORIAL_EVENT_SINGLEQUOTE" , 8);
/** currently parsing a <!-- comment --> */
define("STATE_TUTORIAL_SINGLEQUOTE" , 108);
/** used when a <!-- comment --> is found */
define("TUTORIAL_EVENT_DOUBLEQUOTE" , 9);
/** currently parsing a <!-- comment --> */
define("STATE_TUTORIAL_DOUBLEQUOTE" , 109);
?>
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