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Diffstat (limited to 'lib/htmlpurifier/library/HTMLPurifier/Injector/AutoParagraph.php')
-rw-r--r--lib/htmlpurifier/library/HTMLPurifier/Injector/AutoParagraph.php345
1 files changed, 0 insertions, 345 deletions
diff --git a/lib/htmlpurifier/library/HTMLPurifier/Injector/AutoParagraph.php b/lib/htmlpurifier/library/HTMLPurifier/Injector/AutoParagraph.php
deleted file mode 100644
index afa760892..000000000
--- a/lib/htmlpurifier/library/HTMLPurifier/Injector/AutoParagraph.php
+++ /dev/null
@@ -1,345 +0,0 @@
-<?php
-
-/**
- * Injector that auto paragraphs text in the root node based on
- * double-spacing.
- * @todo Ensure all states are unit tested, including variations as well.
- * @todo Make a graph of the flow control for this Injector.
- */
-class HTMLPurifier_Injector_AutoParagraph extends HTMLPurifier_Injector
-{
-
- public $name = 'AutoParagraph';
- public $needed = array('p');
-
- private function _pStart() {
- $par = new HTMLPurifier_Token_Start('p');
- $par->armor['MakeWellFormed_TagClosedError'] = true;
- return $par;
- }
-
- public function handleText(&$token) {
- $text = $token->data;
- // Does the current parent allow <p> tags?
- if ($this->allowsElement('p')) {
- if (empty($this->currentNesting) || strpos($text, "\n\n") !== false) {
- // Note that we have differing behavior when dealing with text
- // in the anonymous root node, or a node inside the document.
- // If the text as a double-newline, the treatment is the same;
- // if it doesn't, see the next if-block if you're in the document.
-
- $i = $nesting = null;
- if (!$this->forwardUntilEndToken($i, $current, $nesting) && $token->is_whitespace) {
- // State 1.1: ... ^ (whitespace, then document end)
- // ----
- // This is a degenerate case
- } else {
- if (!$token->is_whitespace || $this->_isInline($current)) {
- // State 1.2: PAR1
- // ----
-
- // State 1.3: PAR1\n\nPAR2
- // ------------
-
- // State 1.4: <div>PAR1\n\nPAR2 (see State 2)
- // ------------
- $token = array($this->_pStart());
- $this->_splitText($text, $token);
- } else {
- // State 1.5: \n<hr />
- // --
- }
- }
- } else {
- // State 2: <div>PAR1... (similar to 1.4)
- // ----
-
- // We're in an element that allows paragraph tags, but we're not
- // sure if we're going to need them.
- if ($this->_pLookAhead()) {
- // State 2.1: <div>PAR1<b>PAR1\n\nPAR2
- // ----
- // Note: This will always be the first child, since any
- // previous inline element would have triggered this very
- // same routine, and found the double newline. One possible
- // exception would be a comment.
- $token = array($this->_pStart(), $token);
- } else {
- // State 2.2.1: <div>PAR1<div>
- // ----
-
- // State 2.2.2: <div>PAR1<b>PAR1</b></div>
- // ----
- }
- }
- // Is the current parent a <p> tag?
- } elseif (
- !empty($this->currentNesting) &&
- $this->currentNesting[count($this->currentNesting)-1]->name == 'p'
- ) {
- // State 3.1: ...<p>PAR1
- // ----
-
- // State 3.2: ...<p>PAR1\n\nPAR2
- // ------------
- $token = array();
- $this->_splitText($text, $token);
- // Abort!
- } else {
- // State 4.1: ...<b>PAR1
- // ----
-
- // State 4.2: ...<b>PAR1\n\nPAR2
- // ------------
- }
- }
-
- public function handleElement(&$token) {
- // We don't have to check if we're already in a <p> tag for block
- // tokens, because the tag would have been autoclosed by MakeWellFormed.
- if ($this->allowsElement('p')) {
- if (!empty($this->currentNesting)) {
- if ($this->_isInline($token)) {
- // State 1: <div>...<b>
- // ---
-
- // Check if this token is adjacent to the parent token
- // (seek backwards until token isn't whitespace)
- $i = null;
- $this->backward($i, $prev);
-
- if (!$prev instanceof HTMLPurifier_Token_Start) {
- // Token wasn't adjacent
-
- if (
- $prev instanceof HTMLPurifier_Token_Text &&
- substr($prev->data, -2) === "\n\n"
- ) {
- // State 1.1.4: <div><p>PAR1</p>\n\n<b>
- // ---
-
- // Quite frankly, this should be handled by splitText
- $token = array($this->_pStart(), $token);
- } else {
- // State 1.1.1: <div><p>PAR1</p><b>
- // ---
-
- // State 1.1.2: <div><br /><b>
- // ---
-
- // State 1.1.3: <div>PAR<b>
- // ---
- }
-
- } else {
- // State 1.2.1: <div><b>
- // ---
-
- // Lookahead to see if <p> is needed.
- if ($this->_pLookAhead()) {
- // State 1.3.1: <div><b>PAR1\n\nPAR2
- // ---
- $token = array($this->_pStart(), $token);
- } else {
- // State 1.3.2: <div><b>PAR1</b></div>
- // ---
-
- // State 1.3.3: <div><b>PAR1</b><div></div>\n\n</div>
- // ---
- }
- }
- } else {
- // State 2.3: ...<div>
- // -----
- }
- } else {
- if ($this->_isInline($token)) {
- // State 3.1: <b>
- // ---
- // This is where the {p} tag is inserted, not reflected in
- // inputTokens yet, however.
- $token = array($this->_pStart(), $token);
- } else {
- // State 3.2: <div>
- // -----
- }
-
- $i = null;
- if ($this->backward($i, $prev)) {
- if (
- !$prev instanceof HTMLPurifier_Token_Text
- ) {
- // State 3.1.1: ...</p>{p}<b>
- // ---
-
- // State 3.2.1: ...</p><div>
- // -----
-
- if (!is_array($token)) $token = array($token);
- array_unshift($token, new HTMLPurifier_Token_Text("\n\n"));
- } else {
- // State 3.1.2: ...</p>\n\n{p}<b>
- // ---
-
- // State 3.2.2: ...</p>\n\n<div>
- // -----
-
- // Note: PAR<ELEM> cannot occur because PAR would have been
- // wrapped in <p> tags.
- }
- }
- }
- } else {
- // State 2.2: <ul><li>
- // ----
-
- // State 2.4: <p><b>
- // ---
- }
- }
-
- /**
- * Splits up a text in paragraph tokens and appends them
- * to the result stream that will replace the original
- * @param $data String text data that will be processed
- * into paragraphs
- * @param $result Reference to array of tokens that the
- * tags will be appended onto
- * @param $config Instance of HTMLPurifier_Config
- * @param $context Instance of HTMLPurifier_Context
- */
- private function _splitText($data, &$result) {
- $raw_paragraphs = explode("\n\n", $data);
- $paragraphs = array(); // without empty paragraphs
- $needs_start = false;
- $needs_end = false;
-
- $c = count($raw_paragraphs);
- if ($c == 1) {
- // There were no double-newlines, abort quickly. In theory this
- // should never happen.
- $result[] = new HTMLPurifier_Token_Text($data);
- return;
- }
- for ($i = 0; $i < $c; $i++) {
- $par = $raw_paragraphs[$i];
- if (trim($par) !== '') {
- $paragraphs[] = $par;
- } else {
- if ($i == 0) {
- // Double newline at the front
- if (empty($result)) {
- // The empty result indicates that the AutoParagraph
- // injector did not add any start paragraph tokens.
- // This means that we have been in a paragraph for
- // a while, and the newline means we should start a new one.
- $result[] = new HTMLPurifier_Token_End('p');
- $result[] = new HTMLPurifier_Token_Text("\n\n");
- // However, the start token should only be added if
- // there is more processing to be done (i.e. there are
- // real paragraphs in here). If there are none, the
- // next start paragraph tag will be handled by the
- // next call to the injector
- $needs_start = true;
- } else {
- // We just started a new paragraph!
- // Reinstate a double-newline for presentation's sake, since
- // it was in the source code.
- array_unshift($result, new HTMLPurifier_Token_Text("\n\n"));
- }
- } elseif ($i + 1 == $c) {
- // Double newline at the end
- // There should be a trailing </p> when we're finally done.
- $needs_end = true;
- }
- }
- }
-
- // Check if this was just a giant blob of whitespace. Move this earlier,
- // perhaps?
- if (empty($paragraphs)) {
- return;
- }
-
- // Add the start tag indicated by \n\n at the beginning of $data
- if ($needs_start) {
- $result[] = $this->_pStart();
- }
-
- // Append the paragraphs onto the result
- foreach ($paragraphs as $par) {
- $result[] = new HTMLPurifier_Token_Text($par);
- $result[] = new HTMLPurifier_Token_End('p');
- $result[] = new HTMLPurifier_Token_Text("\n\n");
- $result[] = $this->_pStart();
- }
-
- // Remove trailing start token; Injector will handle this later if
- // it was indeed needed. This prevents from needing to do a lookahead,
- // at the cost of a lookbehind later.
- array_pop($result);
-
- // If there is no need for an end tag, remove all of it and let
- // MakeWellFormed close it later.
- if (!$needs_end) {
- array_pop($result); // removes \n\n
- array_pop($result); // removes </p>
- }
-
- }
-
- /**
- * Returns true if passed token is inline (and, ergo, allowed in
- * paragraph tags)
- */
- private function _isInline($token) {
- return isset($this->htmlDefinition->info['p']->child->elements[$token->name]);
- }
-
- /**
- * Looks ahead in the token list and determines whether or not we need
- * to insert a <p> tag.
- */
- private function _pLookAhead() {
- $this->current($i, $current);
- if ($current instanceof HTMLPurifier_Token_Start) $nesting = 1;
- else $nesting = 0;
- $ok = false;
- while ($this->forwardUntilEndToken($i, $current, $nesting)) {
- $result = $this->_checkNeedsP($current);
- if ($result !== null) {
- $ok = $result;
- break;
- }
- }
- return $ok;
- }
-
- /**
- * Determines if a particular token requires an earlier inline token
- * to get a paragraph. This should be used with _forwardUntilEndToken
- */
- private function _checkNeedsP($current) {
- if ($current instanceof HTMLPurifier_Token_Start){
- if (!$this->_isInline($current)) {
- // <div>PAR1<div>
- // ----
- // Terminate early, since we hit a block element
- return false;
- }
- } elseif ($current instanceof HTMLPurifier_Token_Text) {
- if (strpos($current->data, "\n\n") !== false) {
- // <div>PAR1<b>PAR1\n\nPAR2
- // ----
- return true;
- } else {
- // <div>PAR1<b>PAR1...
- // ----
- }
- }
- return null;
- }
-
-}
-
-// vim: et sw=4 sts=4
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