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dynamic DTD support

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This commit is contained in:
rickg
1998-07-10 05:35:23 +00:00
parent 064faadefa
commit 241a248569
56 changed files with 6482 additions and 468 deletions
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194
parser/htmlparser/src/nsParser.cpp
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@@ -31,6 +31,13 @@
#include "nsIDTDDebug.h"
#include "nshtmlpars.h"
#define rickgdebug 1
#ifdef rickgdebug
#include "CRtfDTD.h"
#include "nsWellFormedDTD.h"
#endif
static NS_DEFINE_IID(kISupportsIID, NS_ISUPPORTS_IID);
static NS_DEFINE_IID(kClassIID, NS_PARSER_IID);
static NS_DEFINE_IID(kIParserIID, NS_IPARSER_IID);
@@ -136,7 +143,8 @@ CSharedParserObjects gSharedParserObjects;
*/
nsParser::nsParser() :
mTokenDeque(gTokenDeallocator),
mContentType()
mSourceType(),
mTargetType()
{
NS_INIT_REFCNT();
mDTDDebug = 0;
@@ -270,6 +278,15 @@ nsIContentSink* nsParser::SetContentSink(nsIContentSink* aSink) {
* @return nothing.
*/
void nsParser::RegisterDTD(nsIDTD* aDTD){
#ifdef rickgdebug
nsIDTD* rv=0;
NS_NewRTF_DTD(&rv);
gSharedParserObjects.RegisterDTD(rv);
NS_NewWellFormed_DTD(&rv);
gSharedParserObjects.RegisterDTD(rv);
#endif
gSharedParserObjects.RegisterDTD(aDTD);
}
@@ -309,28 +326,31 @@ eParseMode DetermineParseMode() {
* @param
* @return
*/
PRBool FindSuitableDTD(eProcessType aProcessType,eParseMode aMode,nsString& aContentType, nsIDTD*& aDefaultDTD) {
PRBool result=PR_FALSE;
PRBool FindSuitableDTD( eParseMode aMode,
nsString& aSourceType,
nsString& aTargetType,
nsIDTD*& aDefaultDTD) {
if(aDefaultDTD) {
if(aDefaultDTD->IsCapableOf(aProcessType,aContentType,0)) {
result=PR_TRUE;
}
}
else {
nsDequeIterator b=gSharedParserObjects.mDTDDeque.Begin();
nsDequeIterator e=gSharedParserObjects.mDTDDeque.End();
//Let's start by tring the defaultDTD, if one exists...
if(aDefaultDTD && (aDefaultDTD->CanParse(aSourceType,0)))
return PR_TRUE;
while(b<e){
nsIDTD* theDTD=(nsIDTD*)b.GetCurrent();
if(theDTD && theDTD->IsCapableOf(aProcessType,aContentType,0)) {
PRBool result=PR_FALSE;
nsDequeIterator b=gSharedParserObjects.mDTDDeque.Begin();
nsDequeIterator e=gSharedParserObjects.mDTDDeque.End();
while(b<e){
nsIDTD* theDTD=(nsIDTD*)b.GetCurrent();
if(theDTD) {
result=theDTD->CanParse(aSourceType,0);
if(result){
aDefaultDTD=theDTD;
result=PR_TRUE;
break;
}
++b;
}
}
b++;
}
return result;
}
@@ -341,22 +361,30 @@ PRBool FindSuitableDTD(eProcessType aProcessType,eParseMode aMode,nsString& aCon
*
* @update gess6/22/98
* @param aBuffer -- nsString containing sample data to be analyzed.
* @param aType -- may hold typename given from netlib; will hold result given by DTD's.
* @return auto-detect result: eValid, eInvalid, eUnknown
*/
eAutoDetectResult nsParser::AutoDetectContentType(nsString& aBuffer) {
eAutoDetectResult nsParser::AutoDetectContentType(nsString& aBuffer,nsString& aType) {
//The process:
// You should go out and ask each DTD if they
// recognize the content in the scanner.
// Somebody should say yes, or we can't continue.
//This method may change mContentType and mDTD.
//This method may change mSourceType and mDTD.
//It absolutely changes mAutoDetectStatus
nsDequeIterator b=gSharedParserObjects.mDTDDeque.Begin();
nsDequeIterator e=gSharedParserObjects.mDTDDeque.End();
mAutoDetectStatus=eUnknownDetect;
if(PR_TRUE==mContentType.Equals(kHTMLTextContentType)) {
mAutoDetectStatus=eValidDetect;
}
while((b<e) && (eUnknownDetect==mAutoDetectStatus)){
nsIDTD* theDTD=(nsIDTD*)b.GetCurrent();
if(theDTD) {
mAutoDetectStatus=theDTD->AutoDetectContentType(aBuffer,aType);
}
b++;
}
return mAutoDetectStatus;
}
@@ -373,13 +401,13 @@ eAutoDetectResult nsParser::AutoDetectContentType(nsString& aBuffer) {
* @param
* @return
*/
PRInt32 nsParser::WillBuildModel(eProcessType aProcessType, const char* aFilename){
PRInt32 nsParser::WillBuildModel(const char* aFilename){
mMajorIteration=-1;
mMinorIteration=-1;
mParseMode=DetermineParseMode();
if(PR_TRUE==FindSuitableDTD(aProcessType,mParseMode,mContentType,mDTD)) {
if(PR_TRUE==FindSuitableDTD(mParseMode,mSourceType,mTargetType,mDTD)) {
mDTD->SetParser(this);
mDTD->SetContentSink(mSink);
mDTD->WillBuildModel(aFilename);
@@ -439,11 +467,12 @@ PRBool nsParser::Parse(const char* aFilename){
if(aFilename) {
//ok, time to create our tokenizer and begin the process
mTargetType=kHTMLTextContentType;
mScanner=new CScanner(aFilename,mParseMode);
if(mScanner) {
mScanner->Eof();
if(eValidDetect==AutoDetectContentType(mScanner->GetBuffer())) {
WillBuildModel(eParsing,aFilename);
if(eValidDetect==AutoDetectContentType(mScanner->GetBuffer(),mSourceType)) {
WillBuildModel(aFilename);
status=ResumeParse();
DidBuildModel(status);
}
@@ -452,6 +481,18 @@ PRBool nsParser::Parse(const char* aFilename){
return status;
}
/**
* Cause parser to parse input from given stream
* @update gess5/11/98
* @param aStream is the i/o source
* @return TRUE if all went well -- FALSE otherwise
*/
PRInt32 nsParser::Parse(fstream& aStream){
PRInt32 result=0;
return result;
}
/**
* This is the main controlling routine in the parsing process.
* Note that it may get called multiple times for the same scanner,
@@ -467,54 +508,6 @@ PRBool nsParser::Parse(const char* aFilename){
* @return PR_TRUE if parse succeeded, PR_FALSE otherwise.
*/
PRInt32 nsParser::Parse(nsIURL* aURL,nsIStreamObserver* aListener, nsIDTDDebug * aDTDDebug) {
PRInt32 status;
status = BeginParse(aURL, aListener, aDTDDebug);
if (NS_OK == status) {
status=mURL->Open(this);
}
return status;
}
/**
* Call this method if all you want to do is parse 1 string full of HTML text.
*
* @update gess5/11/98
* @param anHTMLString contains a string-full of real HTML
* @param appendTokens tells us whether we should insert tokens inline, or append them.
* @return TRUE if all went well -- FALSE otherwise
*/
PRInt32 nsParser::Parse(nsString& aSourceBuffer,PRBool appendTokens){
PRInt32 result=kNoError;
mScanner=new CScanner();
mScanner->Append(aSourceBuffer);
if(eValidDetect==AutoDetectContentType(aSourceBuffer)) {
WillBuildModel(eParsing,"from-string");
result=ResumeParse();
DidBuildModel(result);
}
return result;
}
/**
* This is the main controlling routine in the parsing process.
* Note that it may get called multiple times for the same scanner,
* since this is a pushed based system, and all the tokens may
* not have been consumed by the scanner during a given invocation
* of this method.
*
* NOTE: We don't call willbuildmodel here, because it will happen
* as a result of calling OnStartBinding later on.
*
* @update gess 3/25/98
* @param aFilename -- const char* containing file to be parsed.
* @return PR_TRUE if parse succeeded, PR_FALSE otherwise.
*/
PRInt32 nsParser::BeginParse(nsIURL* aURL,nsIStreamObserver* aListener, nsIDTDDebug * aDTDDebug) {
NS_PRECONDITION(0!=aURL,kNullURL);
PRInt32 status=kBadURL;
@@ -537,36 +530,27 @@ PRInt32 nsParser::BeginParse(nsIURL* aURL,nsIStreamObserver* aListener, nsIDTDDe
return status;
}
/**
*
* @update gess6/23/98
* @param
* @return
*/
PRInt32 nsParser::Convert(nsIURL* aURL,char* aSourceForm,char* aTargetForm,nsIStreamListener* aListener) {
PRInt32 result=0;
return result;
}
/**
*
* @update gess6/23/98
* @param
* @return
* Call this method if all you want to do is parse 1 string full of HTML text.
*
* @update gess5/11/98
* @param anHTMLString contains a string-full of real HTML
* @param appendTokens tells us whether we should insert tokens inline, or append them.
* @return TRUE if all went well -- FALSE otherwise
*/
PRInt32 nsParser::Convert(const char* aFilename,char* aSourceForm,char* aTargetForm) {
PRInt32 result=0;
return result;
}
PRInt32 nsParser::Parse(nsString& aSourceBuffer,PRBool appendTokens){
PRInt32 result=kNoError;
/**
*
* @update gess6/23/98
* @param
* @return
*/
PRInt32 nsParser::Convert(nsString& anHTMLString,char* aSourceForm,char* aTargetForm,PRBool appendTokens){
PRInt32 result=0;
mTargetType=kHTMLTextContentType;
mScanner=new CScanner();
mScanner->Append(aSourceBuffer);
if(eValidDetect==AutoDetectContentType(aSourceBuffer,mSourceType)) {
WillBuildModel("");
result=ResumeParse();
DidBuildModel(result);
}
return result;
}
@@ -722,14 +706,14 @@ nsParser::OnProgress(PRInt32 aProgress, PRInt32 aProgressMax,
* @param
* @return
*/
nsresult nsParser::OnStartBinding(const char *aContentType){
nsresult nsParser::OnStartBinding(const char *aSourceType){
if (nsnull != mObserver) {
mObserver->OnStartBinding(aContentType);
mObserver->OnStartBinding(aSourceType);
}
mAutoDetectStatus=eUnknownDetect;
mDTD=0;
mContentType=aContentType;
mSourceType=aSourceType;
return kNoError;
}
@@ -773,8 +757,8 @@ nsresult nsParser::OnDataAvailable(nsIInputStream *pIStream, PRInt32 length){
mScanner->Append(mTransferBuffer,len);
if(eUnknownDetect==mAutoDetectStatus) {
if(eValidDetect==AutoDetectContentType(mScanner->GetBuffer())) {
nsresult result=WillBuildModel(eParsing,mURL->GetSpec());
if(eValidDetect==AutoDetectContentType(mScanner->GetBuffer(),mSourceType)) {
nsresult result=WillBuildModel(mURL->GetSpec());
} //if
}
} //if