mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-01 14:45:29 +00:00
507 lines
13 KiB
C++
507 lines
13 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
|
|
*
|
|
* The contents of this file are subject to the Netscape Public License
|
|
* Version 1.0 (the "License"); you may not use this file except in
|
|
* compliance with the License. You may obtain a copy of the License at
|
|
* http://www.mozilla.org/NPL/
|
|
*
|
|
* Software distributed under the License is distributed on an "AS IS"
|
|
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
|
|
* the License for the specific language governing rights and limitations
|
|
* under the License.
|
|
*
|
|
* The Original Code is Mozilla Communicator client code.
|
|
*
|
|
* The Initial Developer of the Original Code is Netscape Communications
|
|
* Corporation. Portions created by Netscape are Copyright (C) 1998
|
|
* Netscape Communications Corporation. All Rights Reserved.
|
|
*/
|
|
#include "nsIFrameUtil.h"
|
|
#include "nsWellFormedDTD.h"
|
|
#include "nsParserCIID.h"
|
|
#include "nsIContent.h"
|
|
#include "nsIParser.h"
|
|
#include "nsIXMLContentSink.h"
|
|
#include "nsIURL.h"
|
|
#include "nsIInputStream.h"
|
|
#include "nsHTMLEntities.h"
|
|
#include "nsINameSpaceManager.h"
|
|
#include "stdlib.h"
|
|
|
|
static NS_DEFINE_IID(kIFrameUtilIID, NS_IFRAME_UTIL_IID);
|
|
static NS_DEFINE_IID(kIXMLContentIID, NS_IXMLCONTENT_IID);
|
|
static NS_DEFINE_IID(kIXMLContentSinkIID, NS_IXMLCONTENT_SINK_IID);
|
|
static NS_DEFINE_IID(kCParserIID, NS_IPARSER_IID);
|
|
static NS_DEFINE_IID(kCParserCID, NS_PARSER_IID);
|
|
|
|
// XXX Code copied from nsHTMLContentSink. It should be shared.
|
|
static void
|
|
GetAttributeValueAt(const nsIParserNode& aNode,
|
|
PRInt32 aIndex,
|
|
nsString& aResult)
|
|
{
|
|
// Copy value
|
|
const nsString& value = aNode.GetValueAt(aIndex);
|
|
aResult.Truncate();
|
|
aResult.Append(value);
|
|
|
|
// Strip quotes if present
|
|
PRUnichar first = aResult.First();
|
|
if ((first == '"') || (first == '\'')) {
|
|
if (aResult.Last() == first) {
|
|
aResult.Cut(0, 1);
|
|
PRInt32 pos = aResult.Length() - 1;
|
|
if (pos >= 0) {
|
|
aResult.Cut(pos, 1);
|
|
}
|
|
} else {
|
|
// Mismatched quotes - leave them in
|
|
}
|
|
}
|
|
|
|
// Reduce any entities
|
|
// XXX Note: as coded today, this will only convert well formed
|
|
// entities. This may not be compatible enough.
|
|
// XXX there is a table in navigator that translates some numeric entities
|
|
// should we be doing that? If so then it needs to live in two places (bad)
|
|
// so we should add a translate numeric entity method from the parser...
|
|
char cbuf[100];
|
|
PRInt32 index = 0;
|
|
while (index < aResult.Length()) {
|
|
// If we have the start of an entity (and it's not at the end of
|
|
// our string) then translate the entity into it's unicode value.
|
|
if ((aResult.CharAt(index++) == '&') && (index < aResult.Length())) {
|
|
PRInt32 start = index - 1;
|
|
PRUnichar e = aResult.CharAt(index);
|
|
if (e == '#') {
|
|
// Convert a numeric character reference
|
|
index++;
|
|
char* cp = cbuf;
|
|
char* limit = cp + sizeof(cbuf) - 1;
|
|
PRBool ok = PR_FALSE;
|
|
PRInt32 slen = aResult.Length();
|
|
while ((index < slen) && (cp < limit)) {
|
|
PRUnichar e = aResult.CharAt(index);
|
|
if (e == ';') {
|
|
index++;
|
|
ok = PR_TRUE;
|
|
break;
|
|
}
|
|
if ((e >= '0') && (e <= '9')) {
|
|
*cp++ = char(e);
|
|
index++;
|
|
continue;
|
|
}
|
|
break;
|
|
}
|
|
if (!ok || (cp == cbuf)) {
|
|
continue;
|
|
}
|
|
*cp = '\0';
|
|
if (cp - cbuf > 5) {
|
|
continue;
|
|
}
|
|
PRInt32 ch = PRInt32( ::atoi(cbuf) );
|
|
if (ch > 65535) {
|
|
continue;
|
|
}
|
|
|
|
// Remove entity from string and replace it with the integer
|
|
// value.
|
|
aResult.Cut(start, index - start);
|
|
aResult.Insert(PRUnichar(ch), start);
|
|
index = start + 1;
|
|
}
|
|
else if (((e >= 'A') && (e <= 'Z')) ||
|
|
((e >= 'a') && (e <= 'z'))) {
|
|
// Convert a named entity
|
|
index++;
|
|
char* cp = cbuf;
|
|
char* limit = cp + sizeof(cbuf) - 1;
|
|
*cp++ = char(e);
|
|
PRBool ok = PR_FALSE;
|
|
PRInt32 slen = aResult.Length();
|
|
while ((index < slen) && (cp < limit)) {
|
|
PRUnichar e = aResult.CharAt(index);
|
|
if (e == ';') {
|
|
index++;
|
|
ok = PR_TRUE;
|
|
break;
|
|
}
|
|
if (((e >= '0') && (e <= '9')) ||
|
|
((e >= 'A') && (e <= 'Z')) ||
|
|
((e >= 'a') && (e <= 'z'))) {
|
|
*cp++ = char(e);
|
|
index++;
|
|
continue;
|
|
}
|
|
break;
|
|
}
|
|
if (!ok || (cp == cbuf)) {
|
|
continue;
|
|
}
|
|
*cp = '\0';
|
|
PRInt32 ch = NS_EntityToUnicode(cbuf);
|
|
if (ch < 0) {
|
|
continue;
|
|
}
|
|
|
|
// Remove entity from string and replace it with the integer
|
|
// value.
|
|
aResult.Cut(start, index - start);
|
|
aResult.Insert(PRUnichar(ch), start);
|
|
index = start + 1;
|
|
}
|
|
else if (e == '{') {
|
|
// Convert a script entity
|
|
// XXX write me!
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// XXX Code copied from nsHTMLContentSink. It should be shared.
|
|
static nsresult
|
|
AddAttributes(const nsIParserNode& aNode, nsIContent* aContent)
|
|
{
|
|
// Add tag attributes to the content attributes
|
|
nsAutoString name, value;
|
|
PRInt32 ac = aNode.GetAttributeCount();
|
|
for (PRInt32 i = 0; i < ac; i++) {
|
|
// Get upper-cased key
|
|
const nsString& key = aNode.GetKeyAt(i);
|
|
// XXX need to parse namespace from name
|
|
// XXX need to uppercase name if HTML namespace
|
|
key.ToUpperCase(name);
|
|
|
|
nsIAtom* nameAtom = NS_NewAtom(name);
|
|
if (NS_CONTENT_ATTR_NOT_THERE == aContent->GetAttribute(kNameSpaceID_None, nameAtom, value)) {
|
|
// Get value and remove mandatory quotes
|
|
GetAttributeValueAt(aNode, i, value);
|
|
|
|
// Add attribute to content
|
|
aContent->SetAttribute(kNameSpaceID_None, nameAtom, value, PR_FALSE);
|
|
}
|
|
NS_RELEASE(nameAtom);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
static nsresult
|
|
NewElement(const nsIParserNode& aNode, nsIXMLContent** aResult)
|
|
{
|
|
NS_PRECONDITION(nsnull != aResult, "null pointer");
|
|
if (nsnull == aResult) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
*aResult = nsnull;
|
|
|
|
nsAutoString tag = aNode.GetText();
|
|
nsIAtom* tagAtom = NS_NewAtom(tag);
|
|
if (nsnull == tagAtom) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
nsIXMLContent* xmlContent;
|
|
nsresult rv = NS_NewXMLElement(&xmlContent, tagAtom);
|
|
NS_RELEASE(tagAtom);
|
|
if (NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
rv = AddAttributes(aNode, xmlContent);
|
|
if (NS_FAILED(rv)) {
|
|
NS_RELEASE(xmlContent);
|
|
return rv;
|
|
}
|
|
|
|
*aResult = xmlContent;
|
|
return rv;
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
|
|
/**
|
|
* This class provides a sink for the xml parser and in particular knows
|
|
* how to process frame regression data.
|
|
*/
|
|
class nsFrameRegressionDataSink : public nsIXMLContentSink {
|
|
public:
|
|
nsFrameRegressionDataSink();
|
|
~nsFrameRegressionDataSink();
|
|
|
|
NS_DECL_ISUPPORTS
|
|
|
|
NS_IMETHOD WillBuildModel(void);
|
|
NS_IMETHOD DidBuildModel(PRInt32 aQualityLevel);
|
|
NS_IMETHOD WillInterrupt(void);
|
|
NS_IMETHOD WillResume(void);
|
|
NS_IMETHOD SetParser(nsIParser* aParser);
|
|
NS_IMETHOD OpenContainer(const nsIParserNode& aNode);
|
|
NS_IMETHOD CloseContainer(const nsIParserNode& aNode);
|
|
NS_IMETHOD AddLeaf(const nsIParserNode& aNode);
|
|
NS_IMETHOD AddComment(const nsIParserNode& aNode);
|
|
NS_IMETHOD AddProcessingInstruction(const nsIParserNode& aNode);
|
|
NS_IMETHOD NotifyError(nsresult aErrorResult);
|
|
NS_IMETHOD AddXMLDecl(const nsIParserNode& aNode);
|
|
NS_IMETHOD AddDocTypeDecl(const nsIParserNode& aNode);
|
|
NS_IMETHOD AddCharacterData(const nsIParserNode& aNode);
|
|
NS_IMETHOD AddUnparsedEntity(const nsIParserNode& aNode);
|
|
NS_IMETHOD AddNotation(const nsIParserNode& aNode);
|
|
NS_IMETHOD AddEntityReference(const nsIParserNode& aNode);
|
|
|
|
nsIXMLContent* GetRoot() const { return mRoot; }
|
|
|
|
protected:
|
|
nsIXMLContent* mRoot;
|
|
nsIXMLContent* mCurrentContainer;
|
|
};
|
|
|
|
nsFrameRegressionDataSink::nsFrameRegressionDataSink()
|
|
{
|
|
mRoot = nsnull;
|
|
mCurrentContainer = nsnull;
|
|
mRefCnt = 1;
|
|
}
|
|
|
|
nsFrameRegressionDataSink::~nsFrameRegressionDataSink()
|
|
{
|
|
NS_IF_RELEASE(mRoot);
|
|
NS_IF_RELEASE(mCurrentContainer);
|
|
}
|
|
|
|
NS_IMPL_ISUPPORTS(nsFrameRegressionDataSink, kIXMLContentSinkIID)
|
|
|
|
NS_IMETHODIMP
|
|
nsFrameRegressionDataSink::WillBuildModel()
|
|
{
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsFrameRegressionDataSink::DidBuildModel(PRInt32 aQualityLevel)
|
|
{
|
|
mRoot->List();
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsFrameRegressionDataSink::WillInterrupt()
|
|
{
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsFrameRegressionDataSink::WillResume()
|
|
{
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsFrameRegressionDataSink::SetParser(nsIParser* aParser)
|
|
{
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsFrameRegressionDataSink::OpenContainer(const nsIParserNode& aNode)
|
|
{
|
|
nsIXMLContent* element;
|
|
nsresult rv = NewElement(aNode, &element);
|
|
if (NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
if (nsnull == mRoot) {
|
|
mRoot = element;
|
|
mCurrentContainer = element;
|
|
NS_ADDREF(element);
|
|
}
|
|
else {
|
|
NS_ASSERTION(nsnull != mCurrentContainer, "whoops");
|
|
mCurrentContainer->AppendChildTo(element, PR_FALSE);
|
|
mCurrentContainer = element;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsFrameRegressionDataSink::CloseContainer(const nsIParserNode& aNode)
|
|
{
|
|
NS_PRECONDITION(nsnull != mRoot, "whoops");
|
|
NS_PRECONDITION(nsnull != mCurrentContainer, "whoops");
|
|
|
|
nsresult rv = NS_OK;
|
|
if (mCurrentContainer == mRoot) {
|
|
NS_RELEASE(mCurrentContainer);
|
|
}
|
|
else {
|
|
nsIContent* parent;
|
|
rv = mCurrentContainer->GetParent(parent);
|
|
if (NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
NS_ASSERTION(nsnull != parent, "whoops");
|
|
nsIXMLContent* xmlContent;
|
|
rv = parent->QueryInterface(kIXMLContentIID, (void**) &xmlContent);
|
|
NS_ASSERTION(NS_SUCCEEDED(rv), "whoops");
|
|
if (NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
NS_RELEASE(parent);
|
|
NS_RELEASE(mCurrentContainer);
|
|
mCurrentContainer = xmlContent;
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsFrameRegressionDataSink::AddLeaf(const nsIParserNode& aNode)
|
|
{
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsFrameRegressionDataSink::AddComment(const nsIParserNode& aNode)
|
|
{
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsFrameRegressionDataSink::AddProcessingInstruction(const nsIParserNode& aNode)
|
|
{
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsFrameRegressionDataSink::NotifyError(nsresult aErrorResult)
|
|
{
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsFrameRegressionDataSink::AddXMLDecl(const nsIParserNode& aNode)
|
|
{
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsFrameRegressionDataSink::AddDocTypeDecl(const nsIParserNode& aNode)
|
|
{
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsFrameRegressionDataSink::AddCharacterData(const nsIParserNode& aNode)
|
|
{
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsFrameRegressionDataSink::AddUnparsedEntity(const nsIParserNode& aNode)
|
|
{
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsFrameRegressionDataSink::AddNotation(const nsIParserNode& aNode)
|
|
{
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsFrameRegressionDataSink::AddEntityReference(const nsIParserNode& aNode)
|
|
{
|
|
return NS_OK;
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
|
|
class nsFrameUtil : public nsIFrameUtil {
|
|
public:
|
|
nsFrameUtil();
|
|
~nsFrameUtil();
|
|
|
|
NS_DECL_ISUPPORTS
|
|
NS_IMETHOD LoadFrameRegressionData(nsIURL* aURL, nsIXMLContent** aResult);
|
|
};
|
|
|
|
nsresult NS_NewFrameUtil(nsIFrameUtil** aResult);
|
|
nsresult
|
|
NS_NewFrameUtil(nsIFrameUtil** aResult)
|
|
{
|
|
NS_PRECONDITION(nsnull != aResult, "null pointer");
|
|
if (nsnull == aResult) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
*aResult = nsnull;
|
|
|
|
nsFrameUtil* it = new nsFrameUtil();
|
|
if (nsnull == it) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
return it->QueryInterface(kIFrameUtilIID, (void**) aResult);
|
|
}
|
|
|
|
nsFrameUtil::nsFrameUtil()
|
|
{
|
|
NS_INIT_REFCNT();
|
|
}
|
|
|
|
nsFrameUtil::~nsFrameUtil()
|
|
{
|
|
}
|
|
|
|
NS_IMPL_ISUPPORTS(nsFrameUtil, kIFrameUtilIID);
|
|
|
|
NS_IMETHODIMP
|
|
nsFrameUtil::LoadFrameRegressionData(nsIURL* aURL, nsIXMLContent** aResult)
|
|
{
|
|
NS_PRECONDITION(nsnull != aResult, "null pointer");
|
|
if (nsnull == aResult) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
|
|
nsFrameRegressionDataSink* sink = new nsFrameRegressionDataSink();
|
|
if (nsnull == sink) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
nsIParser* parser;
|
|
nsresult rv = nsRepository::CreateInstance(kCParserCID, nsnull, kCParserIID,
|
|
(void **)&parser);
|
|
if (NS_FAILED(rv)) {
|
|
delete sink;
|
|
return rv;
|
|
}
|
|
|
|
// XXX since the parser can't sync load data, we do it right here
|
|
nsAutoString theWholeDarnThing;
|
|
nsIInputStream* iin;
|
|
rv = NS_OpenURL(aURL, &iin);
|
|
if (NS_OK != rv) {
|
|
return rv;
|
|
}
|
|
for (;;) {
|
|
char buf[4000];
|
|
PRUint32 rc;
|
|
rv = iin->Read(buf, 0, sizeof(buf), &rc);
|
|
if (NS_FAILED(rv) || (rc <= 0)) {
|
|
break;
|
|
}
|
|
theWholeDarnThing.Append(buf, rc);
|
|
}
|
|
NS_RELEASE(iin);
|
|
|
|
// XXX yucky API
|
|
nsIDTD* theDTD = 0;
|
|
NS_NewWellFormed_DTD(&theDTD);
|
|
parser->RegisterDTD(theDTD);
|
|
parser->SetContentSink(sink);
|
|
parser->Parse(theWholeDarnThing, PR_FALSE);
|
|
NS_RELEASE(parser);
|
|
|
|
*aResult = sink->GetRoot();
|
|
NS_RELEASE(sink);
|
|
|
|
return rv;
|
|
}
|