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htmltidy/src/parser.c

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/* parser.c -- HTML Parser
(c) 1998-2007 (W3C) MIT, ERCIM, Keio University
See tidy.h for the copyright notice.
*/
#include "tidy-int.h"
#include "lexer.h"
#include "parser.h"
#include "message.h"
#include "clean.h"
#include "tags.h"
#include "tmbstr.h"
#ifdef _MSC_VER
#include "sprtf.h"
#endif
#ifndef SPRTF
#define SPRTF printf
#endif
#ifdef AUTO_INPUT_ENCODING
#include "charsets.h"
#endif
/*
Issue #72 - Need to know to avoid error-reporting - no warning only if --show-body-only yes
Issue #132 - likewise avoid warning if showing body only
*/
#define showingBodyOnly(doc) (cfgAutoBool(doc,TidyBodyOnly) == TidyYesState) ? yes : no
Bool TY_(CheckNodeIntegrity)(Node *node)
{
#ifndef NO_NODE_INTEGRITY_CHECK
Node *child;
if (node->prev)
{
if (node->prev->next != node)
return no;
}
if (node->next)
{
if (node->next == node || node->next->prev != node)
return no;
}
if (node->parent)
{
if (node->prev == NULL && node->parent->content != node)
return no;
if (node->next == NULL && node->parent->last != node)
return no;
}
for (child = node->content; child; child = child->next)
if ( child->parent != node || !TY_(CheckNodeIntegrity)(child) )
return no;
#endif
return yes;
}
/*
used to determine how attributes
without values should be printed
this was introduced to deal with
user defined tags e.g. Cold Fusion
*/
Bool TY_(IsNewNode)(Node *node)
{
if (node && node->tag)
{
return (node->tag->model & CM_NEW);
}
return yes;
}
void TY_(CoerceNode)(TidyDocImpl* doc, Node *node, TidyTagId tid, Bool obsolete, Bool unexpected)
{
const Dict* tag = TY_(LookupTagDef)(tid);
Node* tmp = TY_(InferredTag)(doc, tag->id);
if (obsolete)
TY_(ReportWarning)(doc, node, tmp, OBSOLETE_ELEMENT);
else if (unexpected)
TY_(ReportError)(doc, node, tmp, REPLACING_UNEX_ELEMENT);
else
TY_(ReportNotice)(doc, node, tmp, REPLACING_ELEMENT);
TidyDocFree(doc, tmp->element);
TidyDocFree(doc, tmp);
node->was = node->tag;
node->tag = tag;
node->type = StartTag;
node->implicit = yes;
TidyDocFree(doc, node->element);
node->element = TY_(tmbstrdup)(doc->allocator, tag->name);
}
/* extract a node and its children from a markup tree */
Node *TY_(RemoveNode)(Node *node)
{
if (node->prev)
node->prev->next = node->next;
if (node->next)
node->next->prev = node->prev;
if (node->parent)
{
if (node->parent->content == node)
node->parent->content = node->next;
if (node->parent->last == node)
node->parent->last = node->prev;
}
node->parent = node->prev = node->next = NULL;
return node;
}
/* remove node from markup tree and discard it */
Node *TY_(DiscardElement)( TidyDocImpl* doc, Node *element )
{
Node *next = NULL;
if (element)
{
next = element->next;
TY_(RemoveNode)(element);
TY_(FreeNode)( doc, element);
}
return next;
}
/*
insert "node" into markup tree as the firt element
of content of "element"
*/
void TY_(InsertNodeAtStart)(Node *element, Node *node)
{
node->parent = element;
if (element->content == NULL)
element->last = node;
else
element->content->prev = node;
node->next = element->content;
node->prev = NULL;
element->content = node;
}
/*
insert "node" into markup tree as the last element
of content of "element"
*/
void TY_(InsertNodeAtEnd)(Node *element, Node *node)
{
node->parent = element;
node->prev = element->last;
if (element->last != NULL)
element->last->next = node;
else
element->content = node;
element->last = node;
}
/*
insert "node" into markup tree in place of "element"
which is moved to become the child of the node
*/
static void InsertNodeAsParent(Node *element, Node *node)
{
node->content = element;
node->last = element;
node->parent = element->parent;
element->parent = node;
if (node->parent->content == element)
node->parent->content = node;
if (node->parent->last == element)
node->parent->last = node;
node->prev = element->prev;
element->prev = NULL;
if (node->prev)
node->prev->next = node;
node->next = element->next;
element->next = NULL;
if (node->next)
node->next->prev = node;
}
/* insert "node" into markup tree before "element" */
void TY_(InsertNodeBeforeElement)(Node *element, Node *node)
{
Node *parent;
parent = element->parent;
node->parent = parent;
node->next = element;
node->prev = element->prev;
element->prev = node;
if (node->prev)
node->prev->next = node;
if (parent->content == element)
parent->content = node;
}
/* insert "node" into markup tree after "element" */
void TY_(InsertNodeAfterElement)(Node *element, Node *node)
{
Node *parent;
parent = element->parent;
node->parent = parent;
/* AQ - 13 Jan 2000 fix for parent == NULL */
if (parent != NULL && parent->last == element)
parent->last = node;
else
{
node->next = element->next;
/* AQ - 13 Jan 2000 fix for node->next == NULL */
if (node->next != NULL)
node->next->prev = node;
}
element->next = node;
node->prev = element;
}
static Bool CanPrune( TidyDocImpl* doc, Node *element )
{
if ( !cfgBool(doc, TidyDropEmptyElems) )
return no;
if ( TY_(nodeIsText)(element) )
return yes;
if ( element->content )
return no;
if ( element->tag == NULL )
return no;
if ( element->tag->model & CM_BLOCK && element->attributes != NULL )
return no;
if ( nodeIsA(element) && element->attributes != NULL )
return no;
if ( nodeIsP(element) && !cfgBool(doc, TidyDropEmptyParas) )
return no;
if ( element->tag->model & CM_ROW )
return no;
if ( element->tag->model & CM_EMPTY )
return no;
if ( nodeIsAPPLET(element) )
return no;
if ( nodeIsOBJECT(element) )
return no;
if ( nodeIsSCRIPT(element) && attrGetSRC(element) )
return no;
if ( nodeIsTITLE(element) )
return no;
/* #433359 - fix by Randy Waki 12 Mar 01 */
if ( nodeIsIFRAME(element) )
return no;
/* fix for bug 770297 */
if (nodeIsTEXTAREA(element))
return no;
/* fix for ISSUE #7 https://github.com/w3c/tidy-html5/issues/7 */
if (nodeIsCANVAS(element))
return no;
if (nodeIsPROGRESS(element))
return no;
if ( attrGetID(element) || attrGetNAME(element) )
return no;
/* fix for bug 695408; a better fix would look for unknown and */
/* known proprietary attributes that make the element significant */
if (attrGetDATAFLD(element))
return no;
/* fix for bug 723772, don't trim new-...-tags */
if (element->tag->id == TidyTag_UNKNOWN)
return no;
if (nodeIsBODY(element))
return no;
if (nodeIsCOLGROUP(element))
return no;
/* HTML5 - do NOT drop empty option if it has attributes */
if ( nodeIsOPTION(element) && element->attributes != NULL )
return no;
/* fix for #103 - don't drop empty dd tags lest document not validate */
if (nodeIsDD(element))
return no;
return yes;
}
/* return next element */
Node *TY_(TrimEmptyElement)( TidyDocImpl* doc, Node *element )
{
if ( CanPrune(doc, element) )
{
if (element->type != TextNode)
TY_(ReportNotice)(doc, element, NULL, TRIM_EMPTY_ELEMENT);
return TY_(DiscardElement)(doc, element);
}
return element->next;
}
Node* TY_(DropEmptyElements)(TidyDocImpl* doc, Node* node)
{
Node* next;
while (node)
{
next = node->next;
if (node->content)
TY_(DropEmptyElements)(doc, node->content);
if (!TY_(nodeIsElement)(node) &&
!(TY_(nodeIsText)(node) && !(node->start < node->end)))
{
node = next;
continue;
}
next = TY_(TrimEmptyElement)(doc, node);
node = next;
}
return node;
}
/*
errors in positioning of form start or end tags
generally require human intervention to fix
Issue #166 - repeated <main> element also uses this flag
to indicate duplicates, discarded
*/
static void BadForm( TidyDocImpl* doc )
{
doc->badForm |= flg_BadForm;
/* doc->errors++; */
}
/*
This maps
<em>hello </em><strong>world</strong>
to
<em>hello</em> <strong>world</strong>
If last child of element is a text node
then trim trailing white space character
moving it to after element's end tag.
*/
static void TrimTrailingSpace( TidyDocImpl* doc, Node *element, Node *last )
{
Lexer* lexer = doc->lexer;
byte c;
if (TY_(nodeIsText)(last))
{
if (last->end > last->start)
{
c = (byte) lexer->lexbuf[ last->end - 1 ];
if ( c == ' '
#ifdef COMMENT_NBSP_FIX
|| c == 160
#endif
)
{
#ifdef COMMENT_NBSP_FIX
/* take care with <td>&nbsp;</td> */
if ( c == 160 &&
( element->tag == doc->tags.tag_td ||
element->tag == doc->tags.tag_th )
)
{
if (last->end > last->start + 1)
last->end -= 1;
}
else
#endif
{
last->end -= 1;
if ( (element->tag->model & CM_INLINE) &&
!(element->tag->model & CM_FIELD) )
lexer->insertspace = yes;
}
}
}
}
}
#if 0
static Node *EscapeTag(Lexer *lexer, Node *element)
{
Node *node = NewNode(lexer->allocator, lexer);
node->start = lexer->lexsize;
AddByte(lexer, '<');
if (element->type == EndTag)
AddByte(lexer, '/');
if (element->element)
{
char *p;
for (p = element->element; *p != '\0'; ++p)
AddByte(lexer, *p);
}
else if (element->type == DocTypeTag)
{
uint i;
AddStringLiteral( lexer, "!DOCTYPE " );
for (i = element->start; i < element->end; ++i)
AddByte(lexer, lexer->lexbuf[i]);
}
if (element->type == StartEndTag)
AddByte(lexer, '/');
AddByte(lexer, '>');
node->end = lexer->lexsize;
return node;
}
#endif /* 0 */
/* Only true for text nodes. */
Bool TY_(IsBlank)(Lexer *lexer, Node *node)
{
Bool isBlank = TY_(nodeIsText)(node);
if ( isBlank )
isBlank = ( node->end == node->start || /* Zero length */
( node->end == node->start+1 /* or one blank. */
&& lexer->lexbuf[node->start] == ' ' ) );
return isBlank;
}
/*
This maps
<p>hello<em> world</em>
to
<p>hello <em>world</em>
Trims initial space, by moving it before the
start tag, or if this element is the first in
parent's content, then by discarding the space
*/
static void TrimInitialSpace( TidyDocImpl* doc, Node *element, Node *text )
{
Lexer* lexer = doc->lexer;
Node *prev, *node;
if ( TY_(nodeIsText)(text) &&
lexer->lexbuf[text->start] == ' ' &&
text->start < text->end )
{
if ( (element->tag->model & CM_INLINE) &&
!(element->tag->model & CM_FIELD) )
{
prev = element->prev;
if (TY_(nodeIsText)(prev))
{
if (prev->end == 0 || lexer->lexbuf[prev->end - 1] != ' ')
lexer->lexbuf[(prev->end)++] = ' ';
++(element->start);
}
else /* create new node */
{
node = TY_(NewNode)(lexer->allocator, lexer);
node->start = (element->start)++;
node->end = element->start;
lexer->lexbuf[node->start] = ' ';
TY_(InsertNodeBeforeElement)(element ,node);
#if !defined(NDEBUG) && defined(_MSC_VER)
SPRTF("TrimInitialSpace: Created text node, inserted before <%s>\n",
(element->element ? element->element : "unknown"));
#endif
}
}
/* discard the space in current node */
++(text->start);
}
}
static Bool IsPreDescendant(Node* node)
{
Node *parent = node->parent;
while (parent)
{
if (parent->tag && parent->tag->parser == TY_(ParsePre))
return yes;
parent = parent->parent;
}
return no;
}
static Bool CleanTrailingWhitespace(TidyDocImpl* doc, Node* node)
{
Node* next;
if (!TY_(nodeIsText)(node))
return no;
if (node->parent->type == DocTypeTag)
return no;
if (IsPreDescendant(node))
return no;
if (node->parent->tag && node->parent->tag->parser == TY_(ParseScript))
return no;
next = node->next;
/* <p>... </p> */
if (!next && !TY_(nodeHasCM)(node->parent, CM_INLINE))
return yes;
/* <div><small>... </small><h3>...</h3></div> */
if (!next && node->parent->next && !TY_(nodeHasCM)(node->parent->next, CM_INLINE))
return yes;
if (!next)
return no;
if (nodeIsBR(next))
return yes;
if (TY_(nodeHasCM)(next, CM_INLINE))
return no;
/* <a href='/'>...</a> <p>...</p> */
if (next->type == StartTag)
return yes;
/* <strong>...</strong> <hr /> */
if (next->type == StartEndTag)
return yes;
/* evil adjacent text nodes, Tidy should not generate these :-( */
if (TY_(nodeIsText)(next) && next->start < next->end
&& TY_(IsWhite)(doc->lexer->lexbuf[next->start]))
return yes;
return no;
}
static Bool CleanLeadingWhitespace(TidyDocImpl* ARG_UNUSED(doc), Node* node)
{
if (!TY_(nodeIsText)(node))
return no;
if (node->parent->type == DocTypeTag)
return no;
if (IsPreDescendant(node))
return no;
if (node->parent->tag && node->parent->tag->parser == TY_(ParseScript))
return no;
/* <p>...<br> <em>...</em>...</p> */
if (nodeIsBR(node->prev))
return yes;
/* <p> ...</p> */
if (node->prev == NULL && !TY_(nodeHasCM)(node->parent, CM_INLINE))
return yes;
/* <h4>...</h4> <em>...</em> */
if (node->prev && !TY_(nodeHasCM)(node->prev, CM_INLINE) &&
TY_(nodeIsElement)(node->prev))
return yes;
/* <p><span> ...</span></p> */
if (!node->prev && !node->parent->prev && !TY_(nodeHasCM)(node->parent->parent, CM_INLINE))
return yes;
return no;
}
static void CleanSpaces(TidyDocImpl* doc, Node* node)
{
Node* next;
while (node)
{
next = node->next;
if (TY_(nodeIsText)(node) && CleanLeadingWhitespace(doc, node))
while (node->start < node->end && TY_(IsWhite)(doc->lexer->lexbuf[node->start]))
++(node->start);
if (TY_(nodeIsText)(node) && CleanTrailingWhitespace(doc, node))
while (node->end > node->start && TY_(IsWhite)(doc->lexer->lexbuf[node->end - 1]))
--(node->end);
if (TY_(nodeIsText)(node) && !(node->start < node->end))
{
TY_(RemoveNode)(node);
TY_(FreeNode)(doc, node);
node = next;
continue;
}
if (node->content)
CleanSpaces(doc, node->content);
node = next;
}
}
/*
Move initial and trailing space out.
This routine maps:
hello<em> world</em>
to
hello <em>world</em>
and
<em>hello </em><strong>world</strong>
to
<em>hello</em> <strong>world</strong>
*/
static void TrimSpaces( TidyDocImpl* doc, Node *element)
{
Node* text = element->content;
if (nodeIsPRE(element) || IsPreDescendant(element))
return;
if (TY_(nodeIsText)(text))
TrimInitialSpace(doc, element, text);
text = element->last;
if (TY_(nodeIsText)(text))
TrimTrailingSpace(doc, element, text);
}
static Bool DescendantOf( Node *element, TidyTagId tid )
{
Node *parent;
for ( parent = element->parent;
parent != NULL;
parent = parent->parent )
{
if ( TagIsId(parent, tid) )
return yes;
}
return no;
}
static Bool InsertMisc(Node *element, Node *node)
{
if (node->type == CommentTag ||
node->type == ProcInsTag ||
node->type == CDATATag ||
node->type == SectionTag ||
node->type == AspTag ||
node->type == JsteTag ||
node->type == PhpTag )
{
TY_(InsertNodeAtEnd)(element, node);
return yes;
}
if ( node->type == XmlDecl )
{
Node* root = element;
while ( root && root->parent )
root = root->parent;
if ( root && !(root->content && root->content->type == XmlDecl))
{
TY_(InsertNodeAtStart)( root, node );
return yes;
}
}
/* Declared empty tags seem to be slipping through
** the cracks. This is an experiment to figure out
** a decent place to pick them up.
*/
if ( node->tag &&
TY_(nodeIsElement)(node) &&
TY_(nodeCMIsEmpty)(node) && TagId(node) == TidyTag_UNKNOWN &&
(node->tag->versions & VERS_PROPRIETARY) != 0 )
{
TY_(InsertNodeAtEnd)(element, node);
return yes;
}
return no;
}
static void ParseTag( TidyDocImpl* doc, Node *node, GetTokenMode mode )
{
Lexer* lexer = doc->lexer;
if (node->tag == NULL) /* [i_a]2 prevent crash for active content (php, asp) docs */
return;
/*
Fix by GLP 2000-12-21. Need to reset insertspace if this
is both a non-inline and empty tag (base, link, meta, isindex, hr, area).
*/
if (node->tag->model & CM_EMPTY)
{
lexer->waswhite = no;
if (node->tag->parser == NULL)
return;
}
else if (!(node->tag->model & CM_INLINE))
lexer->insertspace = no;
if (node->tag->parser == NULL)
return;
if (node->type == StartEndTag)
return;
lexer->parent = node; /* [i_a]2 added this - not sure why - CHECKME: */
(*node->tag->parser)( doc, node, mode );
}
/*
the doctype has been found after other tags,
and needs moving to before the html element
*/
static void InsertDocType( TidyDocImpl* doc, Node *element, Node *doctype )
{
Node* existing = TY_(FindDocType)( doc );
if ( existing )
{
TY_(ReportError)(doc, element, doctype, DISCARDING_UNEXPECTED );
TY_(FreeNode)( doc, doctype );
}
else
{
TY_(ReportError)(doc, element, doctype, DOCTYPE_AFTER_TAGS );
while ( !nodeIsHTML(element) )
element = element->parent;
TY_(InsertNodeBeforeElement)( element, doctype );
}
}
/*
move node to the head, where element is used as starting
point in hunt for head. normally called during parsing
*/
static void MoveToHead( TidyDocImpl* doc, Node *element, Node *node )
{
Node *head;
TY_(RemoveNode)( node ); /* make sure that node is isolated */
if ( TY_(nodeIsElement)(node) )
{
TY_(ReportError)(doc, element, node, TAG_NOT_ALLOWED_IN );
head = TY_(FindHEAD)(doc);
assert(head != NULL);
TY_(InsertNodeAtEnd)(head, node);
if ( node->tag->parser )
ParseTag( doc, node, IgnoreWhitespace );
}
else
{
TY_(ReportError)(doc, element, node, DISCARDING_UNEXPECTED);
TY_(FreeNode)( doc, node );
}
}
/* moves given node to end of body element */
static void MoveNodeToBody( TidyDocImpl* doc, Node* node )
{
Node* body = TY_(FindBody)( doc );
if ( body )
{
TY_(RemoveNode)( node );
TY_(InsertNodeAtEnd)( body, node );
}
}
static void AddClassNoIndent( TidyDocImpl* doc, Node *node )
{
ctmbstr sprop =
"padding-left: 2ex; margin-left: 0ex"
"; margin-top: 0ex; margin-bottom: 0ex";
if ( !cfgBool(doc, TidyDecorateInferredUL) )
return;
if ( cfgBool(doc, TidyMakeClean) )
TY_(AddStyleAsClass)( doc, node, sprop );
else
TY_(AddStyleProperty)( doc, node, sprop );
}
/*
element is node created by the lexer
upon seeing the start tag, or by the
parser when the start tag is inferred
*/
void TY_(ParseBlock)( TidyDocImpl* doc, Node *element, GetTokenMode mode)
{
#if !defined(NDEBUG) && defined(_MSC_VER)
static int in_parse_block = 0;
static int parse_block_cnt = 0;
#endif
Lexer* lexer = doc->lexer;
Node *node;
Bool checkstack = yes;
uint istackbase = 0;
#if !defined(NDEBUG) && defined(_MSC_VER)
in_parse_block++;
parse_block_cnt++;
SPRTF("Entering ParseBlock %d... %d %s\n",in_parse_block,parse_block_cnt,
((element && element->element) ? element->element : ""));
#endif
if ( element->tag->model & CM_EMPTY ) {
#if !defined(NDEBUG) && defined(_MSC_VER)
in_parse_block--;
SPRTF("Exit ParseBlockL 1 %d...\n",in_parse_block);
#endif
return;
}
if ( nodeIsFORM(element) &&
DescendantOf(element, TidyTag_FORM) )
TY_(ReportError)(doc, element, NULL, ILLEGAL_NESTING );
/*
InlineDup() asks the lexer to insert inline emphasis tags
currently pushed on the istack, but take care to avoid
propagating inline emphasis inside OBJECT or APPLET.
For these elements a fresh inline stack context is created
and disposed of upon reaching the end of the element.
They thus behave like table cells in this respect.
*/
if (element->tag->model & CM_OBJECT)
{
istackbase = lexer->istackbase;
lexer->istackbase = lexer->istacksize;
}
if (!(element->tag->model & CM_MIXED))
TY_(InlineDup)( doc, NULL );
/*\
* Issue #212 - If it is likely that it may be necessary
* to move a leading space into a text node before this
* element, then keep the mode MixedContent to keep any
* leading space
\*/
if ( !(element->tag->model & CM_INLINE) ||
(element->tag->model & CM_FIELD ) )
{
mode = IgnoreWhitespace;
}
else if (mode == IgnoreWhitespace)
{
/* Issue #212 - Further fix in case ParseBlock() is called with 'IgnoreWhitespace'
when such a leading space may need to be inserted before this element to
preverve the browser view */
mode = MixedContent;
}
while ((node = TY_(GetToken)(doc, mode /*MixedContent*/)) != NULL)
{
/* end tag for this element */
if (node->type == EndTag && node->tag &&
(node->tag == element->tag || element->was == node->tag))
{
TY_(FreeNode)( doc, node );
if (element->tag->model & CM_OBJECT)
{
/* pop inline stack */
while (lexer->istacksize > lexer->istackbase)
TY_(PopInline)( doc, NULL );
lexer->istackbase = istackbase;
}
element->closed = yes;
TrimSpaces( doc, element );
#if !defined(NDEBUG) && defined(_MSC_VER)
in_parse_block--;
SPRTF("Exit ParseBlock 2 %d...\n",in_parse_block);
#endif
return;
}
#if OBSOLETE /* Issue #380 Kill this code! But leave in src, just in case! */
if ( nodeIsBODY( node ) && DescendantOf( element, TidyTag_HEAD ))
{
/* If we're in the HEAD, close it before proceeding.
This is an extremely rare occurance, but has been observed.
****************************************************************
Issue #380 - This can cause an INFINITE loop!
This code was added to SF CVS Tidy
revision 1.121 by lpassey, Wed Jul 28 18:08:06 2004 UTC
****************************************************************
*/
TY_(UngetToken)( doc );
break;
}
#endif /* #if OBSOLETE */
if ( nodeIsHTML(node) || nodeIsHEAD(node) || nodeIsBODY(node) )
{
if ( TY_(nodeIsElement)(node) )
TY_(ReportError)(doc, element, node, DISCARDING_UNEXPECTED );
TY_(FreeNode)( doc, node );
continue;
}
if (node->type == EndTag)
{
if (node->tag == NULL)
{
TY_(ReportError)(doc, element, node, DISCARDING_UNEXPECTED );
TY_(FreeNode)( doc, node );
continue;
}
else if ( nodeIsBR(node) )
node->type = StartTag;
else if ( nodeIsP(node) )
{
/* Cannot have a block inside a paragraph, so no checking
for an ancestor is necessary -- but we _can_ have
paragraphs inside a block, so change it to an implicit
empty paragraph, to be dealt with according to the user's
options
*/
node->type = StartEndTag;
node->implicit = yes;
#if OBSOLETE
TY_(CoerceNode)(doc, node, TidyTag_BR, no, no);
TY_(FreeAttrs)( doc, node ); /* discard align attribute etc. */
TY_(InsertNodeAtEnd)( element, node );
node = InferredTag(doc, TidyTag_BR);
#endif
}
else if (DescendantOf( element, node->tag->id ))
{
/*
if this is the end tag for an ancestor element
then infer end tag for this element
*/
TY_(UngetToken)( doc );
break;
#if OBSOLETE
Node *parent;
for ( parent = element->parent;
parent != NULL;
parent = parent->parent )
{
if (node->tag == parent->tag)
{
if (!(element->tag->model & CM_OPT))
TY_(ReportError)(doc, element, node, MISSING_ENDTAG_BEFORE );
TY_(UngetToken)( doc );
if (element->tag->model & CM_OBJECT)
{
/* pop inline stack */
while (lexer->istacksize > lexer->istackbase)
TY_(PopInline)( doc, NULL );
lexer->istackbase = istackbase;
}
TrimSpaces( doc, element );
return;
}
}
#endif
}
else
{
/* special case </tr> etc. for stuff moved in front of table */
if ( lexer->exiled
&& (TY_(nodeHasCM)(node, CM_TABLE) || nodeIsTABLE(node)) )
{
TY_(UngetToken)( doc );
TrimSpaces( doc, element );
#if !defined(NDEBUG) && defined(_MSC_VER)
in_parse_block--;
SPRTF("Exit ParseBlock 2 %d...\n",in_parse_block);
#endif
return;
}
}
}
/* mixed content model permits text */
if (TY_(nodeIsText)(node))
{
if ( checkstack )
{
checkstack = no;
if (!(element->tag->model & CM_MIXED))
{
if ( TY_(InlineDup)(doc, node) > 0 )
continue;
}
}
TY_(InsertNodeAtEnd)(element, node);
mode = MixedContent;
/*
HTML4 strict doesn't allow mixed content for
elements with %block; as their content model
*/
/*
But only body, map, blockquote, form and
noscript have content model %block;
*/
if ( nodeIsBODY(element) ||
nodeIsMAP(element) ||
nodeIsBLOCKQUOTE(element) ||
nodeIsFORM(element) ||
nodeIsNOSCRIPT(element) )
TY_(ConstrainVersion)( doc, ~VERS_HTML40_STRICT );
continue;
}
if ( InsertMisc(element, node) )
continue;
/* allow PARAM elements? */
if ( nodeIsPARAM(node) )
{
if ( TY_(nodeHasCM)(element, CM_PARAM) && TY_(nodeIsElement)(node) )
{
TY_(InsertNodeAtEnd)(element, node);
continue;
}
/* otherwise discard it */
TY_(ReportError)(doc, element, node, DISCARDING_UNEXPECTED );
TY_(FreeNode)( doc, node );
continue;
}
/* allow AREA elements? */
if ( nodeIsAREA(node) )
{
if ( nodeIsMAP(element) && TY_(nodeIsElement)(node) )
{
TY_(InsertNodeAtEnd)(element, node);
continue;
}
/* otherwise discard it */
TY_(ReportError)(doc, element, node, DISCARDING_UNEXPECTED );
TY_(FreeNode)( doc, node );
continue;
}
/* ignore unknown start/end tags */
if ( node->tag == NULL )
{
TY_(ReportError)(doc, element, node, DISCARDING_UNEXPECTED );
TY_(FreeNode)( doc, node );
continue;
}
/*
Allow CM_INLINE elements here.
Allow CM_BLOCK elements here unless
lexer->excludeBlocks is yes.
LI and DD are special cased.
Otherwise infer end tag for this element.
*/
if ( !TY_(nodeHasCM)(node, CM_INLINE) )
{
if ( !TY_(nodeIsElement)(node) )
{
if ( nodeIsFORM(node) )
BadForm( doc );
TY_(ReportError)(doc, element, node, DISCARDING_UNEXPECTED );
TY_(FreeNode)( doc, node );
continue;
}
/* #427671 - Fix by Randy Waki - 10 Aug 00 */
/*
If an LI contains an illegal FRAME, FRAMESET, OPTGROUP, or OPTION
start tag, discard the start tag and let the subsequent content get
parsed as content of the enclosing LI. This seems to mimic IE and
Netscape, and avoids an infinite loop: without this check,
ParseBlock (which is parsing the LI's content) and ParseList (which
is parsing the LI's parent's content) repeatedly defer to each
other to parse the illegal start tag, each time inferring a missing
</li> or <li> respectively.
NOTE: This check is a bit fragile. It specifically checks for the
four tags that happen to weave their way through the current series
of tests performed by ParseBlock and ParseList to trigger the
infinite loop.
*/
if ( nodeIsLI(element) )
{
if ( nodeIsFRAME(node) ||
nodeIsFRAMESET(node) ||
nodeIsOPTGROUP(node) ||
nodeIsOPTION(node) )
{
TY_(ReportError)(doc, element, node, DISCARDING_UNEXPECTED );
TY_(FreeNode)( doc, node ); /* DSR - 27Apr02 avoid memory leak */
continue;
}
}
if ( nodeIsTD(element) || nodeIsTH(element) )
{
/* if parent is a table cell, avoid inferring the end of the cell */
if ( TY_(nodeHasCM)(node, CM_HEAD) )
{
MoveToHead( doc, element, node );
continue;
}
if ( TY_(nodeHasCM)(node, CM_LIST) )
{
TY_(UngetToken)( doc );
node = TY_(InferredTag)(doc, TidyTag_UL);
AddClassNoIndent(doc, node);
lexer->excludeBlocks = yes;
}
else if ( TY_(nodeHasCM)(node, CM_DEFLIST) )
{
TY_(UngetToken)( doc );
node = TY_(InferredTag)(doc, TidyTag_DL);
lexer->excludeBlocks = yes;
}
/* infer end of current table cell */
if ( !TY_(nodeHasCM)(node, CM_BLOCK) )
{
TY_(UngetToken)( doc );
TrimSpaces( doc, element );
#if !defined(NDEBUG) && defined(_MSC_VER)
in_parse_block--;
SPRTF("Exit ParseBlock 3 %d...\n",in_parse_block);
#endif
return;
}
}
else if ( TY_(nodeHasCM)(node, CM_BLOCK) )
{
if ( lexer->excludeBlocks )
{
if ( !TY_(nodeHasCM)(element, CM_OPT) )
TY_(ReportError)(doc, element, node, MISSING_ENDTAG_BEFORE );
TY_(UngetToken)( doc );
if ( TY_(nodeHasCM)(element, CM_OBJECT) )
lexer->istackbase = istackbase;
TrimSpaces( doc, element );
#if !defined(NDEBUG) && defined(_MSC_VER)
in_parse_block--;
SPRTF("Exit ParseBlock 4 %d...\n",in_parse_block);
#endif
return;
}
}
else /* things like list items */
{
if (node->tag->model & CM_HEAD)
{
MoveToHead( doc, element, node );
continue;
}
/*
special case where a form start tag
occurs in a tr and is followed by td or th
*/
if ( nodeIsFORM(element) &&
nodeIsTD(element->parent) &&
element->parent->implicit )
{
if ( nodeIsTD(node) )
{
TY_(ReportError)(doc, element, node, DISCARDING_UNEXPECTED );
TY_(FreeNode)( doc, node );
continue;
}
if ( nodeIsTH(node) )
{
TY_(ReportError)(doc, element, node, DISCARDING_UNEXPECTED );
TY_(FreeNode)( doc, node );
node = element->parent;
TidyDocFree(doc, node->element);
node->element = TY_(tmbstrdup)(doc->allocator, "th");
node->tag = TY_(LookupTagDef)( TidyTag_TH );
continue;
}
}
if ( !TY_(nodeHasCM)(element, CM_OPT) && !element->implicit )
TY_(ReportError)(doc, element, node, MISSING_ENDTAG_BEFORE );
TY_(UngetToken)( doc );
if ( TY_(nodeHasCM)(node, CM_LIST) )
{
if ( element->parent && element->parent->tag &&
element->parent->tag->parser == TY_(ParseList) )
{
TrimSpaces( doc, element );
#if !defined(NDEBUG) && defined(_MSC_VER)
in_parse_block--;
SPRTF("Exit ParseBlock 5 %d...\n",in_parse_block);
#endif
return;
}
node = TY_(InferredTag)(doc, TidyTag_UL);
AddClassNoIndent(doc, node);
}
else if ( TY_(nodeHasCM)(node, CM_DEFLIST) )
{
if ( nodeIsDL(element->parent) )
{
TrimSpaces( doc, element );
#if !defined(NDEBUG) && defined(_MSC_VER)
in_parse_block--;
SPRTF("Exit ParseBlock 6 %d...\n",in_parse_block);
#endif
return;
}
node = TY_(InferredTag)(doc, TidyTag_DL);
}
else if ( TY_(nodeHasCM)(node, CM_TABLE) || TY_(nodeHasCM)(node, CM_ROW) )
{
/* http://tidy.sf.net/issue/1316307 */
/* In exiled mode, return so table processing can
continue. */
if (lexer->exiled) {
#if !defined(NDEBUG) && defined(_MSC_VER)
in_parse_block--;
SPRTF("Exit ParseBlock 7 %d...\n",in_parse_block);
#endif
return;
}
node = TY_(InferredTag)(doc, TidyTag_TABLE);
}
else if ( TY_(nodeHasCM)(element, CM_OBJECT) )
{
/* pop inline stack */
while ( lexer->istacksize > lexer->istackbase )
TY_(PopInline)( doc, NULL );
lexer->istackbase = istackbase;
TrimSpaces( doc, element );
#if !defined(NDEBUG) && defined(_MSC_VER)
in_parse_block--;
SPRTF("Exit ParseBlock 8 %d...\n",in_parse_block);
#endif
return;
}
else
{
TrimSpaces( doc, element );
#if !defined(NDEBUG) && defined(_MSC_VER)
in_parse_block--;
SPRTF("Exit ParseBlock 9 %d...\n",in_parse_block);
#endif
return;
}
}
}
/*\
* Issue #307 - an <A> tag to ends any open <A> element
* Like #427827 - fixed by Randy Waki and Bjoern Hoehrmann 23 Aug 00
* in ParseInline(), fix copied HERE to ParseBlock()
* href: http://www.w3.org/TR/html-markup/a.html
* The interactive element a must not appear as a descendant of the a element.
\*/
if ( nodeIsA(node) && !node->implicit &&
(nodeIsA(element) || DescendantOf(element, TidyTag_A)) )
{
if (node->type != EndTag && node->attributes == NULL
&& cfgBool(doc, TidyCoerceEndTags) )
{
node->type = EndTag;
TY_(ReportError)(doc, element, node, COERCE_TO_ENDTAG);
TY_(UngetToken)( doc );
continue;
}
if (nodeIsA(element))
{
TY_(UngetToken)( doc );
}
TY_(ReportError)(doc, element, node, MISSING_ENDTAG_BEFORE);
if (!(mode & Preformatted))
TrimSpaces(doc, element);
#if !defined(NDEBUG) && defined(_MSC_VER)
in_parse_block--;
SPRTF("Exit ParseBlock 9b %d...\n",in_parse_block);
#endif
return;
}
/* parse known element */
if (TY_(nodeIsElement)(node))
{
if (node->tag->model & CM_INLINE)
{
if (checkstack && !node->implicit)
{
checkstack = no;
if (!(element->tag->model & CM_MIXED)) /* #431731 - fix by Randy Waki 25 Dec 00 */
{
if ( TY_(InlineDup)(doc, node) > 0 )
continue;
}
}
mode = MixedContent;
}
else
{
checkstack = yes;
mode = IgnoreWhitespace;
}
/* trim white space before <br> */
if ( nodeIsBR(node) )
TrimSpaces( doc, element );
TY_(InsertNodeAtEnd)(element, node);
if (node->implicit)
TY_(ReportError)(doc, element, node, INSERTING_TAG );
/* Issue #212 - WHY is this hard coded to 'IgnoreWhitespace' while an
effort has been made above to set a 'MixedContent' mode in some cases?
WHY IS THE 'mode' VARIABLE NOT USED HERE???? */
ParseTag( doc, node, IgnoreWhitespace /*MixedContent*/ );
continue;
}
/* discard unexpected tags */
if (node->type == EndTag)
TY_(PopInline)( doc, node ); /* if inline end tag */
TY_(ReportError)(doc, element, node, DISCARDING_UNEXPECTED );
TY_(FreeNode)( doc, node );
continue;
}
if (!(element->tag->model & CM_OPT))
TY_(ReportError)(doc, element, node, MISSING_ENDTAG_FOR);
if (element->tag->model & CM_OBJECT)
{
/* pop inline stack */
while ( lexer->istacksize > lexer->istackbase )
TY_(PopInline)( doc, NULL );
lexer->istackbase = istackbase;
}
TrimSpaces( doc, element );
#if !defined(NDEBUG) && defined(_MSC_VER)
in_parse_block--;
SPRTF("Exit ParseBlock 10 %d...\n",in_parse_block);
#endif
}
/* [i_a] svg / math */
struct MatchingDescendantData
{
Node *found_node;
Bool *passed_marker_node;
/* input: */
TidyTagId matching_tagId;
Node *node_to_find;
Node *marker_node;
};
static NodeTraversalSignal FindDescendant_cb(TidyDocImpl* ARG_UNUSED(doc), Node* node, void *propagate)
{
struct MatchingDescendantData *cb_data = (struct MatchingDescendantData *)propagate;
if (TagId(node) == cb_data->matching_tagId)
{
/* make sure we match up 'unknown' tags exactly! */
if (cb_data->matching_tagId != TidyTag_UNKNOWN ||
(node->element != NULL &&
cb_data->node_to_find != NULL &&
cb_data->node_to_find->element != NULL &&
0 == TY_(tmbstrcmp)(cb_data->node_to_find->element, node->element)))
{
cb_data->found_node = node;
return ExitTraversal;
}
}
if (cb_data->passed_marker_node && node == cb_data->marker_node)
*cb_data->passed_marker_node = yes;
return VisitParent;
}
/*
Search the parent chain (from 'parent' upwards up to the root) for a node matching the
given 'node'.
When the search passes beyond the 'marker_node' (which is assumed to sit in the
parent chain), this will be flagged by setting the boolean referenced by
'is_parent_of_marker' to yes.
'is_parent_of_marker' and 'marker_node' are optional parameters and may be NULL.
*/
static Node *FindMatchingDescendant( Node *parent, Node *node, Node *marker_node, Bool *is_parent_of_marker )
{
struct MatchingDescendantData cb_data = { 0 };
cb_data.matching_tagId = TagId(node);
cb_data.node_to_find = node;
cb_data.marker_node = marker_node;
assert(node);
if (is_parent_of_marker)
*is_parent_of_marker = no;
TY_(TraverseNodeTree)(NULL, parent, FindDescendant_cb, &cb_data);
return cb_data.found_node;
}
/*
Act as a generic XML (sub)tree parser: collect each node and add it to the DOM, without any further validation.
TODO : add schema- or other-hierarchy-definition-based validation of the subtree here...
*/
void TY_(ParseNamespace)(TidyDocImpl* doc, Node *basenode, GetTokenMode mode)
{
Lexer* lexer = doc->lexer;
Node *node;
Node *parent = basenode;
uint istackbase;
AttVal* av; /* #130 MathML attr and entity fix! */
/* a la <table>: defer popping elements off the inline stack */
TY_(DeferDup)( doc );
istackbase = lexer->istackbase;
lexer->istackbase = lexer->istacksize;
mode = OtherNamespace; /* Preformatted; IgnoreWhitespace; */
while ((node = TY_(GetToken)(doc, mode)) != NULL)
{
/*
fix check to skip action in InsertMisc for regular/empty
nodes, which we don't want here...
The way we do it here is by checking and processing everything
and only what remains goes into InsertMisc()
*/
/* is this a close tag? And does it match the current parent node? */
if (node->type == EndTag)
{
/*
to prevent end tags flowing from one 'alternate namespace' we
check this in two phases: first we check if the tag is a
descendant of the current node, and when it is, we check whether
it is the end tag for a node /within/ or /outside/ the basenode.
*/
Bool outside;
Node *mp = FindMatchingDescendant(parent, node, basenode, &outside);
if (mp != NULL)
{
/*
when mp != parent as we might expect,
infer end tags until we 'hit' the matched
parent or the basenode
*/
Node *n;
for (n = parent;
n != NULL && n != basenode->parent && n != mp;
n = n->parent)
{
/* n->implicit = yes; */
n->closed = yes;
TY_(ReportError)(doc, n->parent, n, MISSING_ENDTAG_BEFORE);
}
/* Issue #369 - Since 'assert' is DEBUG only, and there are
simple cases where these can be fired, removing them
pending feedback from the original author!
assert(outside == no ? n == mp : 1);
assert(outside == yes ? n == basenode->parent : 1);
=================================================== */
if (outside == no)
{
/* EndTag for a node within the basenode subtree. Roll on... */
n->closed = yes;
TY_(FreeNode)(doc, node);
node = n;
parent = node->parent;
}
else
{
/* EndTag for a node outside the basenode subtree: let the caller handle that. */
TY_(UngetToken)( doc );
node = basenode;
parent = node->parent;
}
/* when we've arrived at the end-node for the base node, it's quitting time */
if (node == basenode)
{
lexer->istackbase = istackbase;
assert(basenode->closed == yes);
return;
}
}
else
{
/* unmatched close tag: report an error and discard */
/* TY_(ReportError)(doc, parent, node, NON_MATCHING_ENDTAG); Issue #308 - Seems wrong warning! */
TY_(ReportError)(doc, parent, node, DISCARDING_UNEXPECTED);
assert(parent);
/* assert(parent->tag != node->tag); Issue #308 - Seems would always be true! */
TY_(FreeNode)( doc, node); /* Issue #308 - Discard unexpected end tag memory */
}
}
else if (node->type == StartTag)
{
/* #130 MathML attr and entity fix!
care if it has attributes, and 'accidently' any of those attributes match known */
for ( av = node->attributes; av; av = av->next )
{
av->dict = 0; /* does something need to be freed? */
}
/* add another child to the current parent */
TY_(InsertNodeAtEnd)(parent, node);
parent = node;
}
else
{
/* #130 MathML attr and entity fix!
care if it has attributes, and 'accidently' any of those attributes match known */
for ( av = node->attributes; av; av = av->next )
{
av->dict = 0; /* does something need to be freed? */
}
TY_(InsertNodeAtEnd)(parent, node);
}
}
TY_(ReportError)(doc, basenode->parent, basenode, MISSING_ENDTAG_FOR);
}
void TY_(ParseInline)( TidyDocImpl* doc, Node *element, GetTokenMode mode )
{
#if !defined(NDEBUG) && defined(_MSC_VER)
static int in_parse_inline = 0;
#endif
Lexer* lexer = doc->lexer;
Node *node, *parent;
#if !defined(NDEBUG) && defined(_MSC_VER)
in_parse_inline++;
SPRTF("Entering ParseInline %d...\n",in_parse_inline);
#endif
if (element->tag->model & CM_EMPTY) {
#if !defined(NDEBUG) && defined(_MSC_VER)
in_parse_inline--;
SPRTF("Exit ParseInline 1 %d...\n",in_parse_inline);
#endif
return;
}
/*
ParseInline is used for some block level elements like H1 to H6
For such elements we need to insert inline emphasis tags currently
on the inline stack. For Inline elements, we normally push them
onto the inline stack provided they aren't implicit or OBJECT/APPLET.
This test is carried out in PushInline and PopInline, see istack.c
InlineDup(...) is not called for elements with a CM_MIXED (inline and
block) content model, e.g. <del> or <ins>, otherwise constructs like
<p>111<a name='foo'>222<del>333</del>444</a>555</p>
<p>111<span>222<del>333</del>444</span>555</p>
<p>111<em>222<del>333</del>444</em>555</p>
will get corrupted.
*/
if ((TY_(nodeHasCM)(element, CM_BLOCK) || nodeIsDT(element)) &&
!TY_(nodeHasCM)(element, CM_MIXED))
TY_(InlineDup)(doc, NULL);
else if (TY_(nodeHasCM)(element, CM_INLINE))
TY_(PushInline)(doc, element);
if ( nodeIsNOBR(element) )
doc->badLayout |= USING_NOBR;
else if ( nodeIsFONT(element) )
doc->badLayout |= USING_FONT;
/* Inline elements may or may not be within a preformatted element */
if (mode != Preformatted)
mode = MixedContent;
while ((node = TY_(GetToken)(doc, mode)) != NULL)
{
/* end tag for current element */
if (node->tag == element->tag && node->type == EndTag)
{
if (element->tag->model & CM_INLINE)
TY_(PopInline)( doc, node );
TY_(FreeNode)( doc, node );
if (!(mode & Preformatted))
TrimSpaces(doc, element);
/*
if a font element wraps an anchor and nothing else
then move the font element inside the anchor since
otherwise it won't alter the anchor text color
*/
if ( nodeIsFONT(element) &&
element->content && element->content == element->last )
{
Node *child = element->content;
if ( nodeIsA(child) )
{
child->parent = element->parent;
child->next = element->next;
child->prev = element->prev;
element->next = NULL;
element->prev = NULL;
element->parent = child;
element->content = child->content;
element->last = child->last;
child->content = element;
TY_(FixNodeLinks)(child);
TY_(FixNodeLinks)(element);
}
}
element->closed = yes;
TrimSpaces( doc, element );
#if !defined(NDEBUG) && defined(_MSC_VER)
in_parse_inline--;
SPRTF("Exit ParseInline 2 %d...\n",in_parse_inline);
#endif
return;
}
/* <u>...<u> map 2nd <u> to </u> if 1st is explicit */
/* (see additional conditions below) */
/* otherwise emphasis nesting is probably unintentional */
/* big, small, sub, sup have cumulative effect to leave them alone */
if ( node->type == StartTag
&& node->tag == element->tag
&& TY_(IsPushed)( doc, node )
&& !node->implicit
&& !element->implicit
&& node->tag && (node->tag->model & CM_INLINE)
&& !nodeIsA(node)
&& !nodeIsFONT(node)
&& !nodeIsBIG(node)
&& !nodeIsSMALL(node)
&& !nodeIsSUB(node)
&& !nodeIsSUP(node)
&& !nodeIsQ(node)
&& !nodeIsSPAN(node)
&& cfgBool(doc, TidyCoerceEndTags)
)
{
/* proceeds only if "node" does not have any attribute and
follows a text node not finishing with a space */
if (element->content != NULL && node->attributes == NULL
&& TY_(nodeIsText)(element->last)
&& !TY_(TextNodeEndWithSpace)(doc->lexer, element->last) )
{
TY_(ReportWarning)(doc, element, node, COERCE_TO_ENDTAG_WARN);
node->type = EndTag;
TY_(UngetToken)(doc);
continue;
}
if (node->attributes == NULL || element->attributes == NULL)
TY_(ReportWarning)(doc, element, node, NESTED_EMPHASIS);
}
else if ( TY_(IsPushed)(doc, node) && node->type == StartTag &&
nodeIsQ(node) )
{
/*\
* Issue #215 - such nested quotes are NOT a problem if HTML5, so
* only issue this warning if NOT HTML5 mode.
\*/
if (TY_(HTMLVersion)(doc) != HT50)
{
TY_(ReportWarning)(doc, element, node, NESTED_QUOTATION);
}
}
if ( TY_(nodeIsText)(node) )
{
/* only called for 1st child */
if ( element->content == NULL && !(mode & Preformatted) )
TrimSpaces( doc, element );
if ( node->start >= node->end )
{
TY_(FreeNode)( doc, node );
continue;
}
TY_(InsertNodeAtEnd)(element, node);
continue;
}
/* mixed content model so allow text */
if (InsertMisc(element, node))
continue;
/* deal with HTML tags */
if ( nodeIsHTML(node) )
{
if ( TY_(nodeIsElement)(node) )
{
TY_(ReportError)(doc, element, node, DISCARDING_UNEXPECTED );
TY_(FreeNode)( doc, node );
continue;
}
/* otherwise infer end of inline element */
TY_(UngetToken)( doc );
if (!(mode & Preformatted))
TrimSpaces(doc, element);
#if !defined(NDEBUG) && defined(_MSC_VER)
in_parse_inline--;
SPRTF("Exit ParseInline 3 %d...\n",in_parse_inline);
#endif
return;
}
/* within <dt> or <pre> map <p> to <br> */
if ( nodeIsP(node) &&
node->type == StartTag &&
( (mode & Preformatted) ||
nodeIsDT(element) ||
DescendantOf(element, TidyTag_DT )
)
)
{
node->tag = TY_(LookupTagDef)( TidyTag_BR );
TidyDocFree(doc, node->element);
node->element = TY_(tmbstrdup)(doc->allocator, "br");
TrimSpaces(doc, element);
TY_(InsertNodeAtEnd)(element, node);
continue;
}
/* <p> allowed within <address> in HTML 4.01 Transitional */
if ( nodeIsP(node) &&
node->type == StartTag &&
nodeIsADDRESS(element) )
{
TY_(ConstrainVersion)( doc, ~VERS_HTML40_STRICT );
TY_(InsertNodeAtEnd)(element, node);
(*node->tag->parser)( doc, node, mode );
continue;
}
/* ignore unknown and PARAM tags */
if ( node->tag == NULL || nodeIsPARAM(node) )
{
TY_(ReportError)(doc, element, node, DISCARDING_UNEXPECTED);
TY_(FreeNode)( doc, node );
continue;
}
if ( nodeIsBR(node) && node->type == EndTag )
node->type = StartTag;
if ( node->type == EndTag )
{
/* coerce </br> to <br> */
if ( nodeIsBR(node) )
node->type = StartTag;
else if ( nodeIsP(node) )
{
/* coerce unmatched </p> to <br><br> */
if ( !DescendantOf(element, TidyTag_P) )
{
TY_(CoerceNode)(doc, node, TidyTag_BR, no, no);
TrimSpaces( doc, element );
TY_(InsertNodeAtEnd)( element, node );
node = TY_(InferredTag)(doc, TidyTag_BR);
TY_(InsertNodeAtEnd)( element, node ); /* todo: check this */
continue;
}
}
else if ( TY_(nodeHasCM)(node, CM_INLINE)
&& !nodeIsA(node)
&& !TY_(nodeHasCM)(node, CM_OBJECT)
&& TY_(nodeHasCM)(element, CM_INLINE) )
{
/* allow any inline end tag to end current element */
/* http://tidy.sf.net/issue/1426419 */
/* but, like the browser, retain an earlier inline element.
This is implemented by setting the lexer into a mode
where it gets tokens from the inline stack rather than
from the input stream. Check if the scenerio fits. */
if ( !nodeIsA(element)
&& (node->tag != element->tag)
&& TY_(IsPushed)( doc, node )
&& TY_(IsPushed)( doc, element ) )
{
/* we have something like
<b>bold <i>bold and italic</b> italics</i> */
if ( TY_(SwitchInline)( doc, element, node ) )
{
TY_(ReportError)(doc, element, node, NON_MATCHING_ENDTAG);
TY_(UngetToken)( doc ); /* put this back */
TY_(InlineDup1)( doc, NULL, element ); /* dupe the <i>, after </b> */
if (!(mode & Preformatted))
TrimSpaces( doc, element );
#if !defined(NDEBUG) && defined(_MSC_VER)
in_parse_inline--;
SPRTF("Exit ParseInline 4 %d...\n",in_parse_inline);
#endif
return; /* close <i>, but will re-open it, after </b> */
}
}
TY_(PopInline)( doc, element );
if ( !nodeIsA(element) )
{
if ( nodeIsA(node) && node->tag != element->tag )
{
TY_(ReportError)(doc, element, node, MISSING_ENDTAG_BEFORE );
TY_(UngetToken)( doc );
}
else
{
TY_(ReportError)(doc, element, node, NON_MATCHING_ENDTAG);
TY_(FreeNode)( doc, node);
}
if (!(mode & Preformatted))
TrimSpaces(doc, element);
#if !defined(NDEBUG) && defined(_MSC_VER)
in_parse_inline--;
SPRTF("Exit ParseInline 5 %d...\n",in_parse_inline);
#endif
return;
}
/* if parent is <a> then discard unexpected inline end tag */
TY_(ReportError)(doc, element, node, DISCARDING_UNEXPECTED);
TY_(FreeNode)( doc, node);
continue;
} /* special case </tr> etc. for stuff moved in front of table */
else if ( lexer->exiled
&& (TY_(nodeHasCM)(node, CM_TABLE) || nodeIsTABLE(node)) )
{
TY_(UngetToken)( doc );
TrimSpaces(doc, element);
#if !defined(NDEBUG) && defined(_MSC_VER)
in_parse_inline--;
SPRTF("Exit ParseInline 6 %d...\n",in_parse_inline);
#endif
return;
}
}
/* allow any header tag to end current header */
if ( TY_(nodeHasCM)(node, CM_HEADING) && TY_(nodeHasCM)(element, CM_HEADING) )
{
if ( node->tag == element->tag )
{
TY_(ReportError)(doc, element, node, NON_MATCHING_ENDTAG );
TY_(FreeNode)( doc, node);
}
else
{
TY_(ReportError)(doc, element, node, MISSING_ENDTAG_BEFORE );
TY_(UngetToken)( doc );
}
if (!(mode & Preformatted))
TrimSpaces(doc, element);
#if !defined(NDEBUG) && defined(_MSC_VER)
in_parse_inline--;
SPRTF("Exit ParseInline 7 %d...\n",in_parse_inline);
#endif
return;
}
/*
an <A> tag to ends any open <A> element
but <A href=...> is mapped to </A><A href=...>
*/
/* #427827 - fix by Randy Waki and Bjoern Hoehrmann 23 Aug 00 */
/* if (node->tag == doc->tags.tag_a && !node->implicit && TY_(IsPushed)(doc, node)) */
if ( nodeIsA(node) && !node->implicit &&
(nodeIsA(element) || DescendantOf(element, TidyTag_A)) )
{
/* coerce <a> to </a> unless it has some attributes */
/* #427827 - fix by Randy Waki and Bjoern Hoehrmann 23 Aug 00 */
/* other fixes by Dave Raggett */
/* if (node->attributes == NULL) */
if (node->type != EndTag && node->attributes == NULL
&& cfgBool(doc, TidyCoerceEndTags) )
{
node->type = EndTag;
TY_(ReportError)(doc, element, node, COERCE_TO_ENDTAG);
/* TY_(PopInline)( doc, node ); */
TY_(UngetToken)( doc );
continue;
}
TY_(UngetToken)( doc );
TY_(ReportError)(doc, element, node, MISSING_ENDTAG_BEFORE);
/* TY_(PopInline)( doc, element ); */
if (!(mode & Preformatted))
TrimSpaces(doc, element);
#if !defined(NDEBUG) && defined(_MSC_VER)
in_parse_inline--;
SPRTF("Exit ParseInline 8 %d...\n",in_parse_inline);
#endif
return;
}
if (element->tag->model & CM_HEADING)
{
if ( nodeIsCENTER(node) || nodeIsDIV(node) )
{
if (!TY_(nodeIsElement)(node))
{
TY_(ReportError)(doc, element, node, DISCARDING_UNEXPECTED);
TY_(FreeNode)( doc, node);
continue;
}
TY_(ReportError)(doc, element, node, TAG_NOT_ALLOWED_IN);
/* insert center as parent if heading is empty */
if (element->content == NULL)
{
InsertNodeAsParent(element, node);
continue;
}
/* split heading and make center parent of 2nd part */
TY_(InsertNodeAfterElement)(element, node);
if (!(mode & Preformatted))
TrimSpaces(doc, element);
element = TY_(CloneNode)( doc, element );
TY_(InsertNodeAtEnd)(node, element);
continue;
}
if ( nodeIsHR(node) )
{
if ( !TY_(nodeIsElement)(node) )
{
TY_(ReportError)(doc, element, node, DISCARDING_UNEXPECTED);
TY_(FreeNode)( doc, node);
continue;
}
TY_(ReportError)(doc, element, node, TAG_NOT_ALLOWED_IN);
/* insert hr before heading if heading is empty */
if (element->content == NULL)
{
TY_(InsertNodeBeforeElement)(element, node);
continue;
}
/* split heading and insert hr before 2nd part */
TY_(InsertNodeAfterElement)(element, node);
if (!(mode & Preformatted))
TrimSpaces(doc, element);
element = TY_(CloneNode)( doc, element );
TY_(InsertNodeAfterElement)(node, element);
continue;
}
}
if ( nodeIsDT(element) )
{
if ( nodeIsHR(node) )
{
Node *dd;
if ( !TY_(nodeIsElement)(node) )
{
TY_(ReportError)(doc, element, node, DISCARDING_UNEXPECTED);
TY_(FreeNode)( doc, node);
continue;
}
TY_(ReportError)(doc, element, node, TAG_NOT_ALLOWED_IN);
dd = TY_(InferredTag)(doc, TidyTag_DD);
/* insert hr within dd before dt if dt is empty */
if (element->content == NULL)
{
TY_(InsertNodeBeforeElement)(element, dd);
TY_(InsertNodeAtEnd)(dd, node);
continue;
}
/* split dt and insert hr within dd before 2nd part */
TY_(InsertNodeAfterElement)(element, dd);
TY_(InsertNodeAtEnd)(dd, node);
if (!(mode & Preformatted))
TrimSpaces(doc, element);
element = TY_(CloneNode)( doc, element );
TY_(InsertNodeAfterElement)(dd, element);
continue;
}
}
/*
if this is the end tag for an ancestor element
then infer end tag for this element
*/
if (node->type == EndTag)
{
for (parent = element->parent;
parent != NULL; parent = parent->parent)
{
if (node->tag == parent->tag)
{
if (!(element->tag->model & CM_OPT) && !element->implicit)
TY_(ReportError)(doc, element, node, MISSING_ENDTAG_BEFORE);
if( TY_(IsPushedLast)( doc, element, node ) )
TY_(PopInline)( doc, element );
TY_(UngetToken)( doc );
if (!(mode & Preformatted))
TrimSpaces(doc, element);
#if !defined(NDEBUG) && defined(_MSC_VER)
in_parse_inline--;
SPRTF("Exit ParseInline 9 %d...\n",in_parse_inline);
#endif
return;
}
}
}
/* block level tags end this element */
if (!(node->tag->model & CM_INLINE) &&
!(element->tag->model & CM_MIXED))
{
if ( !TY_(nodeIsElement)(node) )
{
TY_(ReportError)(doc, element, node, DISCARDING_UNEXPECTED);
TY_(FreeNode)( doc, node);
continue;
}
/* HTML5 */
if (nodeIsDATALIST(element)) {
TY_(ConstrainVersion)( doc, ~VERS_HTML5 );
} else
if (!(element->tag->model & CM_OPT))
TY_(ReportError)(doc, element, node, MISSING_ENDTAG_BEFORE);
if (node->tag->model & CM_HEAD && !(node->tag->model & CM_BLOCK))
{
MoveToHead(doc, element, node);
continue;
}
/*
prevent anchors from propagating into block tags
except for headings h1 to h6
*/
if ( nodeIsA(element) )
{
if (node->tag && !(node->tag->model & CM_HEADING))
TY_(PopInline)( doc, element );
else if (!(element->content))
{
TY_(DiscardElement)( doc, element );
TY_(UngetToken)( doc );
#if !defined(NDEBUG) && defined(_MSC_VER)
in_parse_inline--;
SPRTF("Exit ParseInline 10 %d...\n",in_parse_inline);
#endif
return;
}
}
TY_(UngetToken)( doc );
if (!(mode & Preformatted))
TrimSpaces(doc, element);
#if !defined(NDEBUG) && defined(_MSC_VER)
in_parse_inline--;
SPRTF("Exit ParseInline 11 %d...\n",in_parse_inline);
#endif
return;
}
/* parse inline element */
if (TY_(nodeIsElement)(node))
{
if (node->implicit)
TY_(ReportError)(doc, element, node, INSERTING_TAG);
/* trim white space before <br> */
if ( nodeIsBR(node) )
TrimSpaces(doc, element);
TY_(InsertNodeAtEnd)(element, node);
ParseTag(doc, node, mode);
continue;
}
/* discard unexpected tags */
TY_(ReportError)(doc, element, node, DISCARDING_UNEXPECTED);
TY_(FreeNode)( doc, node );
continue;
}
if (!(element->tag->model & CM_OPT))
TY_(ReportError)(doc, element, node, MISSING_ENDTAG_FOR);
#if !defined(NDEBUG) && defined(_MSC_VER)
in_parse_inline--;
SPRTF("Exit ParseInline 12 %d...\n",in_parse_inline);
#endif
}
void TY_(ParseEmpty)(TidyDocImpl* doc, Node *element, GetTokenMode mode)
{
Lexer* lexer = doc->lexer;
if ( lexer->isvoyager )
{
Node *node = TY_(GetToken)( doc, mode);
if ( node )
{
if ( !(node->type == EndTag && node->tag == element->tag) )
{
/* TY_(ReportError)(doc, element, node, ELEMENT_NOT_EMPTY); */
TY_(UngetToken)( doc );
}
else
{
TY_(FreeNode)( doc, node );
}
}
}
}
void TY_(ParseDefList)(TidyDocImpl* doc, Node *list, GetTokenMode mode)
{
Lexer* lexer = doc->lexer;
Node *node, *parent;
if (list->tag->model & CM_EMPTY)
return;
lexer->insert = NULL; /* defer implicit inline start tags */
while ((node = TY_(GetToken)( doc, IgnoreWhitespace)) != NULL)
{
if (node->tag == list->tag && node->type == EndTag)
{
TY_(FreeNode)( doc, node);
list->closed = yes;
return;
}
/* deal with comments etc. */
if (InsertMisc(list, node))
continue;
if (TY_(nodeIsText)(node))
{
TY_(UngetToken)( doc );
node = TY_(InferredTag)(doc, TidyTag_DT);
TY_(ReportError)(doc, list, node, MISSING_STARTTAG);
}
if (node->tag == NULL)
{
TY_(ReportError)(doc, list, node, DISCARDING_UNEXPECTED);
TY_(FreeNode)( doc, node);
continue;
}
/*
if this is the end tag for an ancestor element
then infer end tag for this element
*/
if (node->type == EndTag)
{
Bool discardIt = no;
if ( nodeIsFORM(node) )
{
BadForm( doc );
TY_(ReportError)(doc, list, node, DISCARDING_UNEXPECTED);
TY_(FreeNode)( doc, node );
continue;
}
for (parent = list->parent;
parent != NULL; parent = parent->parent)
{
/* Do not match across BODY to avoid infinite loop
between ParseBody and this parser,
See http://tidy.sf.net/bug/1098012. */
if (nodeIsBODY(parent))
{
discardIt = yes;
break;
}
if (node->tag == parent->tag)
{
TY_(ReportError)(doc, list, node, MISSING_ENDTAG_BEFORE);
TY_(UngetToken)( doc );
return;
}
}
if (discardIt)
{
TY_(ReportError)(doc, list, node, DISCARDING_UNEXPECTED);
TY_(FreeNode)( doc, node);
continue;
}
}
/* center in a dt or a dl breaks the dl list in two */
if ( nodeIsCENTER(node) )
{
if (list->content)
TY_(InsertNodeAfterElement)(list, node);
else /* trim empty dl list */
{
TY_(InsertNodeBeforeElement)(list, node);
/* #540296 tidy dumps with empty definition list */
#if 0
TY_(DiscardElement)(list);
#endif
}
/* #426885 - fix by Glenn Carroll 19 Apr 00, and
Gary Dechaines 11 Aug 00 */
/* ParseTag can destroy node, if it finds that
* this <center> is followed immediately by </center>.
* It's awkward but necessary to determine if this
* has happened.
*/
parent = node->parent;
/* and parse contents of center */
lexer->excludeBlocks = no;
ParseTag( doc, node, mode);
lexer->excludeBlocks = yes;
/* now create a new dl element,
* unless node has been blown away because the
* center was empty, as above.
*/
if (parent->last == node)
{
list = TY_(InferredTag)(doc, TidyTag_DL);
TY_(InsertNodeAfterElement)(node, list);
}
continue;
}
if ( !(nodeIsDT(node) || nodeIsDD(node)) )
{
TY_(UngetToken)( doc );
if (!(node->tag->model & (CM_BLOCK | CM_INLINE)))
{
TY_(ReportError)(doc, list, node, TAG_NOT_ALLOWED_IN);
return;
}
/* if DD appeared directly in BODY then exclude blocks */
if (!(node->tag->model & CM_INLINE) && lexer->excludeBlocks)
return;
node = TY_(InferredTag)(doc, TidyTag_DD);
TY_(ReportError)(doc, list, node, MISSING_STARTTAG);
}
if (node->type == EndTag)
{
TY_(ReportError)(doc, list, node, DISCARDING_UNEXPECTED);
TY_(FreeNode)( doc, node);
continue;
}
/* node should be <DT> or <DD>*/
TY_(InsertNodeAtEnd)(list, node);
ParseTag( doc, node, IgnoreWhitespace);
}
TY_(ReportError)(doc, list, node, MISSING_ENDTAG_FOR);
}
static Bool FindLastLI( Node *list, Node **lastli )
{
Node *node;
*lastli = NULL;
for ( node = list->content; node ; node = node->next )
if ( nodeIsLI(node) && node->type == StartTag )
*lastli=node;
return *lastli ? yes:no;
}
void TY_(ParseList)(TidyDocImpl* doc, Node *list, GetTokenMode ARG_UNUSED(mode))
{
#if !defined(NDEBUG) && defined(_MSC_VER)
static int in_parse_list = 0;
#endif
Lexer* lexer = doc->lexer;
Node *node, *parent, *lastli;
Bool wasblock;
#if !defined(NDEBUG) && defined(_MSC_VER)
in_parse_list++;
SPRTF("Entering ParseList %d...\n",in_parse_list);
#endif
if (list->tag->model & CM_EMPTY)
{
#if !defined(NDEBUG) && defined(_MSC_VER)
in_parse_list--;
SPRTF("Exit ParseList 1 %d... CM_EMPTY\n",in_parse_list);
#endif
return;
}
lexer->insert = NULL; /* defer implicit inline start tags */
while ((node = TY_(GetToken)( doc, IgnoreWhitespace)) != NULL)
{
if (node->tag == list->tag && node->type == EndTag)
{
TY_(FreeNode)( doc, node);
list->closed = yes;
#if !defined(NDEBUG) && defined(_MSC_VER)
in_parse_list--;
SPRTF("Exit ParseList 2 %d... Endtag\n",in_parse_list);
#endif
return;
}
/* deal with comments etc. */
if (InsertMisc(list, node))
continue;
if (node->type != TextNode && node->tag == NULL)
{
TY_(ReportError)(doc, list, node, DISCARDING_UNEXPECTED);
TY_(FreeNode)( doc, node);
continue;
}
/*
if this is the end tag for an ancestor element
then infer end tag for this element
*/
if (node->type == EndTag)
{
if ( nodeIsFORM(node) )
{
BadForm( doc );
TY_(ReportError)(doc, list, node, DISCARDING_UNEXPECTED);
TY_(FreeNode)( doc, node );
continue;
}
if (TY_(nodeHasCM)(node,CM_INLINE))
{
TY_(ReportError)(doc, list, node, DISCARDING_UNEXPECTED);
TY_(PopInline)( doc, node );
TY_(FreeNode)( doc, node);
continue;
}
for ( parent = list->parent;
parent != NULL; parent = parent->parent )
{
/* Do not match across BODY to avoid infinite loop
between ParseBody and this parser,
See http://tidy.sf.net/bug/1053626. */
if (nodeIsBODY(parent))
break;
if (node->tag == parent->tag)
{
TY_(ReportError)(doc, list, node, MISSING_ENDTAG_BEFORE);
TY_(UngetToken)( doc );
#if !defined(NDEBUG) && defined(_MSC_VER)
in_parse_list--;
SPRTF("Exit ParseList 3 %d... No End Tag\n",in_parse_list);
#endif
return;
}
}
TY_(ReportError)(doc, list, node, DISCARDING_UNEXPECTED);
TY_(FreeNode)( doc, node);
continue;
}
if ( nodeIsLI(node) || TY_(IsHTML5Mode)(doc))
{
/* node is <LI>
Issue #396 - A <ul> can have Zero or more li elements
*/
TY_(InsertNodeAtEnd)(list,node);
}
else
{
TY_(UngetToken)( doc );
if (TY_(nodeHasCM)(node,CM_BLOCK) && lexer->excludeBlocks)
{
TY_(ReportError)(doc, list, node, MISSING_ENDTAG_BEFORE);
#if !defined(NDEBUG) && defined(_MSC_VER)
in_parse_list--;
SPRTF("Exit ParseList 4 %d... No End Tag\n",in_parse_list);
#endif
return;
}
/* http://tidy.sf.net/issue/1316307 */
/* In exiled mode, return so table processing can continue. */
else if ( lexer->exiled
&& (TY_(nodeHasCM)(node, CM_TABLE|CM_ROWGRP|CM_ROW)
|| nodeIsTABLE(node)) )
{
#if !defined(NDEBUG) && defined(_MSC_VER)
in_parse_list--;
SPRTF("Exit ParseList 5 %d... exiled\n",in_parse_list);
#endif
return;
}
/* http://tidy.sf.net/issue/836462
If "list" is an unordered list, insert the next tag within
the last <li> to preserve the numbering to match the visual
rendering of most browsers. */
if ( nodeIsOL(list) && FindLastLI(list, &lastli) )
{
/* Create a node for error reporting */
node = TY_(InferredTag)(doc, TidyTag_LI);
TY_(ReportError)(doc, list, node, MISSING_STARTTAG );
TY_(FreeNode)( doc, node);
node = lastli;
}
else
{
/* Add an inferred <li> */
wasblock = TY_(nodeHasCM)(node,CM_BLOCK);
node = TY_(InferredTag)(doc, TidyTag_LI);
/* Add "display: inline" to avoid a blank line after <li> with
Internet Explorer. See http://tidy.sf.net/issue/836462 */
TY_(AddStyleProperty)( doc, node,
wasblock
? "list-style: none; display: inline"
: "list-style: none"
);
TY_(ReportError)(doc, list, node, MISSING_STARTTAG );
TY_(InsertNodeAtEnd)(list,node);
}
}
ParseTag( doc, node, IgnoreWhitespace);
}
TY_(ReportError)(doc, list, node, MISSING_ENDTAG_FOR);
#if !defined(NDEBUG) && defined(_MSC_VER)
in_parse_list--;
SPRTF("Exit ParseList 6 %d... missing end tag\n",in_parse_list);
#endif
}
/*
unexpected content in table row is moved to just before
the table in accordance with Netscape and IE. This code
assumes that node hasn't been inserted into the row.
*/
static void MoveBeforeTable( TidyDocImpl* ARG_UNUSED(doc), Node *row,
Node *node )
{
Node *table;
/* first find the table element */
for (table = row->parent; table; table = table->parent)
{
if ( nodeIsTABLE(table) )
{
TY_(InsertNodeBeforeElement)( table, node );
return;
}
}
/* No table element */
TY_(InsertNodeBeforeElement)( row->parent, node );
}
/*
if a table row is empty then insert an empty cell
this practice is consistent with browser behavior
and avoids potential problems with row spanning cells
*/
static void FixEmptyRow(TidyDocImpl* doc, Node *row)
{
Node *cell;
if (row->content == NULL)
{
cell = TY_(InferredTag)(doc, TidyTag_TD);
TY_(InsertNodeAtEnd)(row, cell);
TY_(ReportError)(doc, row, cell, MISSING_STARTTAG);
}
}
void TY_(ParseRow)(TidyDocImpl* doc, Node *row, GetTokenMode ARG_UNUSED(mode))
{
Lexer* lexer = doc->lexer;
Node *node;
Bool exclude_state;
if (row->tag->model & CM_EMPTY)
return;
while ((node = TY_(GetToken)(doc, IgnoreWhitespace)) != NULL)
{
if (node->tag == row->tag)
{
if (node->type == EndTag)
{
TY_(FreeNode)( doc, node);
row->closed = yes;