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gecko-dev/parser/html/nsHtml5MetaScanner.cpp
Henri Sivonen deaa1352fa Bug 539887 - Make document.written meta charset affect the charset of document.opened documents in the HTML5 parser. r=bnewman. 
--HG--
extra : rebase_source : 71434258f5a6f330e1e0583826fbb415fb110b0b
2010-03-09 14:39:32 +02:00

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/*
* Copyright (c) 2007 Henri Sivonen
* Copyright (c) 2008-2009 Mozilla Foundation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
/*
* THIS IS A GENERATED FILE. PLEASE DO NOT EDIT.
* Please edit MetaScanner.java instead and regenerate.
*/
#define nsHtml5MetaScanner_cpp__
#include "prtypes.h"
#include "nsIAtom.h"
#include "nsHtml5AtomTable.h"
#include "nsString.h"
#include "nsINameSpaceManager.h"
#include "nsIContent.h"
#include "nsIDocument.h"
#include "nsTraceRefcnt.h"
#include "jArray.h"
#include "nsHtml5DocumentMode.h"
#include "nsHtml5ArrayCopy.h"
#include "nsHtml5NamedCharacters.h"
#include "nsHtml5Atoms.h"
#include "nsHtml5ByteReadable.h"
#include "nsIUnicodeDecoder.h"
#include "nsAHtml5TreeBuilderState.h"
#include "nsAHtml5EncodingDeclarationHandler.h"
#include "nsHtml5Tokenizer.h"
#include "nsHtml5TreeBuilder.h"
#include "nsHtml5AttributeName.h"
#include "nsHtml5ElementName.h"
#include "nsHtml5HtmlAttributes.h"
#include "nsHtml5StackNode.h"
#include "nsHtml5UTF16Buffer.h"
#include "nsHtml5StateSnapshot.h"
#include "nsHtml5Portability.h"
#include "nsHtml5MetaScanner.h"
void
nsHtml5MetaScanner::stateLoop(PRInt32 state)
{
PRInt32 c = -1;
PRBool reconsume = PR_FALSE;
stateloop: for (; ; ) {
switch(state) {
case NS_HTML5META_SCANNER_DATA: {
for (; ; ) {
if (reconsume) {
reconsume = PR_FALSE;
} else {
c = read();
}
switch(c) {
case -1: {
goto stateloop_end;
}
case '<': {
state = NS_HTML5META_SCANNER_TAG_OPEN;
goto dataloop_end;
}
default: {
continue;
}
}
}
dataloop_end: ;
}
case NS_HTML5META_SCANNER_TAG_OPEN: {
for (; ; ) {
c = read();
switch(c) {
case -1: {
goto stateloop_end;
}
case 'm':
case 'M': {
metaState = NS_HTML5META_SCANNER_M;
state = NS_HTML5META_SCANNER_TAG_NAME;
goto tagopenloop_end;
}
case '!': {
state = NS_HTML5META_SCANNER_MARKUP_DECLARATION_OPEN;
goto stateloop;
}
case '\?':
case '/': {
state = NS_HTML5META_SCANNER_SCAN_UNTIL_GT;
goto stateloop;
}
case '>': {
state = NS_HTML5META_SCANNER_DATA;
goto stateloop;
}
default: {
if ((c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z')) {
metaState = NS_HTML5META_SCANNER_NO;
state = NS_HTML5META_SCANNER_TAG_NAME;
goto tagopenloop_end;
}
state = NS_HTML5META_SCANNER_DATA;
reconsume = PR_TRUE;
goto stateloop;
}
}
}
tagopenloop_end: ;
}
case NS_HTML5META_SCANNER_TAG_NAME: {
for (; ; ) {
c = read();
switch(c) {
case -1: {
goto stateloop_end;
}
case ' ':
case '\t':
case '\n':
case '\f': {
state = NS_HTML5META_SCANNER_BEFORE_ATTRIBUTE_NAME;
goto tagnameloop_end;
}
case '/': {
state = NS_HTML5META_SCANNER_SELF_CLOSING_START_TAG;
goto stateloop;
}
case '>': {
state = NS_HTML5META_SCANNER_DATA;
goto stateloop;
}
case 'e':
case 'E': {
if (metaState == NS_HTML5META_SCANNER_M) {
metaState = NS_HTML5META_SCANNER_E;
} else {
metaState = NS_HTML5META_SCANNER_NO;
}
continue;
}
case 't':
case 'T': {
if (metaState == NS_HTML5META_SCANNER_E) {
metaState = NS_HTML5META_SCANNER_T;
} else {
metaState = NS_HTML5META_SCANNER_NO;
}
continue;
}
case 'a':
case 'A': {
if (metaState == NS_HTML5META_SCANNER_T) {
metaState = NS_HTML5META_SCANNER_A;
} else {
metaState = NS_HTML5META_SCANNER_NO;
}
continue;
}
default: {
metaState = NS_HTML5META_SCANNER_NO;
continue;
}
}
}
tagnameloop_end: ;
}
case NS_HTML5META_SCANNER_BEFORE_ATTRIBUTE_NAME: {
for (; ; ) {
if (reconsume) {
reconsume = PR_FALSE;
} else {
c = read();
}
switch(c) {
case -1: {
goto stateloop_end;
}
case ' ':
case '\t':
case '\n':
case '\f': {
continue;
}
case '/': {
state = NS_HTML5META_SCANNER_SELF_CLOSING_START_TAG;
goto stateloop;
}
case '>': {
state = NS_HTML5META_SCANNER_DATA;
goto stateloop;
}
case 'c':
case 'C': {
contentIndex = 0;
charsetIndex = 0;
state = NS_HTML5META_SCANNER_ATTRIBUTE_NAME;
goto beforeattributenameloop_end;
}
default: {
contentIndex = -1;
charsetIndex = -1;
state = NS_HTML5META_SCANNER_ATTRIBUTE_NAME;
goto beforeattributenameloop_end;
}
}
}
beforeattributenameloop_end: ;
}
case NS_HTML5META_SCANNER_ATTRIBUTE_NAME: {
for (; ; ) {
c = read();
switch(c) {
case -1: {
goto stateloop_end;
}
case ' ':
case '\t':
case '\n':
case '\f': {
state = NS_HTML5META_SCANNER_AFTER_ATTRIBUTE_NAME;
goto stateloop;
}
case '/': {
state = NS_HTML5META_SCANNER_SELF_CLOSING_START_TAG;
goto stateloop;
}
case '=': {
strBufLen = 0;
state = NS_HTML5META_SCANNER_BEFORE_ATTRIBUTE_VALUE;
goto attributenameloop_end;
}
case '>': {
state = NS_HTML5META_SCANNER_DATA;
goto stateloop;
}
default: {
if (metaState == NS_HTML5META_SCANNER_A) {
if (c >= 'A' && c <= 'Z') {
c += 0x20;
}
if (contentIndex == 6) {
contentIndex = -1;
} else if (contentIndex > -1 && contentIndex < 6 && (c == CONTENT[contentIndex + 1])) {
contentIndex++;
}
if (charsetIndex == 6) {
charsetIndex = -1;
} else if (charsetIndex > -1 && charsetIndex < 6 && (c == CHARSET[charsetIndex + 1])) {
charsetIndex++;
}
}
continue;
}
}
}
attributenameloop_end: ;
}
case NS_HTML5META_SCANNER_BEFORE_ATTRIBUTE_VALUE: {
for (; ; ) {
c = read();
switch(c) {
case -1: {
goto stateloop_end;
}
case ' ':
case '\t':
case '\n':
case '\f': {
continue;
}
case '\"': {
state = NS_HTML5META_SCANNER_ATTRIBUTE_VALUE_DOUBLE_QUOTED;
goto beforeattributevalueloop_end;
}
case '\'': {
state = NS_HTML5META_SCANNER_ATTRIBUTE_VALUE_SINGLE_QUOTED;
goto stateloop;
}
case '>': {
state = NS_HTML5META_SCANNER_DATA;
goto stateloop;
}
default: {
if (charsetIndex == 6 || contentIndex == 6) {
addToBuffer(c);
}
state = NS_HTML5META_SCANNER_ATTRIBUTE_VALUE_UNQUOTED;
goto stateloop;
}
}
}
beforeattributevalueloop_end: ;
}
case NS_HTML5META_SCANNER_ATTRIBUTE_VALUE_DOUBLE_QUOTED: {
for (; ; ) {
if (reconsume) {
reconsume = PR_FALSE;
} else {
c = read();
}
switch(c) {
case -1: {
goto stateloop_end;
}
case '\"': {
if (tryCharset()) {
goto stateloop_end;
}
state = NS_HTML5META_SCANNER_AFTER_ATTRIBUTE_VALUE_QUOTED;
goto attributevaluedoublequotedloop_end;
}
default: {
if (metaState == NS_HTML5META_SCANNER_A && (contentIndex == 6 || charsetIndex == 6)) {
addToBuffer(c);
}
continue;
}
}
}
attributevaluedoublequotedloop_end: ;
}
case NS_HTML5META_SCANNER_AFTER_ATTRIBUTE_VALUE_QUOTED: {
for (; ; ) {
c = read();
switch(c) {
case -1: {
goto stateloop_end;
}
case ' ':
case '\t':
case '\n':
case '\f': {
state = NS_HTML5META_SCANNER_BEFORE_ATTRIBUTE_NAME;
goto stateloop;
}
case '/': {
state = NS_HTML5META_SCANNER_SELF_CLOSING_START_TAG;
goto afterattributevaluequotedloop_end;
}
case '>': {
state = NS_HTML5META_SCANNER_DATA;
goto stateloop;
}
default: {
state = NS_HTML5META_SCANNER_BEFORE_ATTRIBUTE_NAME;
reconsume = PR_TRUE;
goto stateloop;
}
}
}
afterattributevaluequotedloop_end: ;
}
case NS_HTML5META_SCANNER_SELF_CLOSING_START_TAG: {
c = read();
switch(c) {
case -1: {
goto stateloop_end;
}
case '>': {
state = NS_HTML5META_SCANNER_DATA;
goto stateloop;
}
default: {
state = NS_HTML5META_SCANNER_BEFORE_ATTRIBUTE_NAME;
reconsume = PR_TRUE;
goto stateloop;
}
}
}
case NS_HTML5META_SCANNER_ATTRIBUTE_VALUE_UNQUOTED: {
for (; ; ) {
if (reconsume) {
reconsume = PR_FALSE;
} else {
c = read();
}
switch(c) {
case -1: {
goto stateloop_end;
}
case ' ':
case '\t':
case '\n':
case '\f': {
if (tryCharset()) {
goto stateloop_end;
}
state = NS_HTML5META_SCANNER_BEFORE_ATTRIBUTE_NAME;
goto stateloop;
}
case '>': {
if (tryCharset()) {
goto stateloop_end;
}
state = NS_HTML5META_SCANNER_DATA;
goto stateloop;
}
default: {
if (metaState == NS_HTML5META_SCANNER_A && (contentIndex == 6 || charsetIndex == 6)) {
addToBuffer(c);
}
continue;
}
}
}
}
case NS_HTML5META_SCANNER_AFTER_ATTRIBUTE_NAME: {
for (; ; ) {
c = read();
switch(c) {
case -1: {
goto stateloop_end;
}
case ' ':
case '\t':
case '\n':
case '\f': {
continue;
}
case '/': {
if (tryCharset()) {
goto stateloop_end;
}
state = NS_HTML5META_SCANNER_SELF_CLOSING_START_TAG;
goto stateloop;
}
case '=': {
state = NS_HTML5META_SCANNER_BEFORE_ATTRIBUTE_VALUE;
goto stateloop;
}
case '>': {
if (tryCharset()) {
goto stateloop_end;
}
state = NS_HTML5META_SCANNER_DATA;
goto stateloop;
}
case 'c':
case 'C': {
contentIndex = 0;
charsetIndex = 0;
state = NS_HTML5META_SCANNER_ATTRIBUTE_NAME;
goto stateloop;
}
default: {
contentIndex = -1;
charsetIndex = -1;
state = NS_HTML5META_SCANNER_ATTRIBUTE_NAME;
goto stateloop;
}
}
}
}
case NS_HTML5META_SCANNER_MARKUP_DECLARATION_OPEN: {
for (; ; ) {
c = read();
switch(c) {
case -1: {
goto stateloop_end;
}
case '-': {
state = NS_HTML5META_SCANNER_MARKUP_DECLARATION_HYPHEN;
goto markupdeclarationopenloop_end;
}
default: {
state = NS_HTML5META_SCANNER_SCAN_UNTIL_GT;
reconsume = PR_TRUE;
goto stateloop;
}
}
}
markupdeclarationopenloop_end: ;
}
case NS_HTML5META_SCANNER_MARKUP_DECLARATION_HYPHEN: {
for (; ; ) {
c = read();
switch(c) {
case -1: {
goto stateloop_end;
}
case '-': {
state = NS_HTML5META_SCANNER_COMMENT_START;
goto markupdeclarationhyphenloop_end;
}
default: {
state = NS_HTML5META_SCANNER_SCAN_UNTIL_GT;
reconsume = PR_TRUE;
goto stateloop;
}
}
}
markupdeclarationhyphenloop_end: ;
}
case NS_HTML5META_SCANNER_COMMENT_START: {
for (; ; ) {
c = read();
switch(c) {
case -1: {
goto stateloop_end;
}
case '-': {
state = NS_HTML5META_SCANNER_COMMENT_START_DASH;
goto stateloop;
}
case '>': {
state = NS_HTML5META_SCANNER_DATA;
goto stateloop;
}
default: {
state = NS_HTML5META_SCANNER_COMMENT;
goto commentstartloop_end;
}
}
}
commentstartloop_end: ;
}
case NS_HTML5META_SCANNER_COMMENT: {
for (; ; ) {
c = read();
switch(c) {
case -1: {
goto stateloop_end;
}
case '-': {
state = NS_HTML5META_SCANNER_COMMENT_END_DASH;
goto commentloop_end;
}
default: {
continue;
}
}
}
commentloop_end: ;
}
case NS_HTML5META_SCANNER_COMMENT_END_DASH: {
for (; ; ) {
c = read();
switch(c) {
case -1: {
goto stateloop_end;
}
case '-': {
state = NS_HTML5META_SCANNER_COMMENT_END;
goto commentenddashloop_end;
}
default: {
state = NS_HTML5META_SCANNER_COMMENT;
goto stateloop;
}
}
}
commentenddashloop_end: ;
}
case NS_HTML5META_SCANNER_COMMENT_END: {
for (; ; ) {
c = read();
switch(c) {
case -1: {
goto stateloop_end;
}
case '>': {
state = NS_HTML5META_SCANNER_DATA;
goto stateloop;
}
case '-': {
continue;
}
default: {
state = NS_HTML5META_SCANNER_COMMENT;
goto stateloop;
}
}
}
}
case NS_HTML5META_SCANNER_COMMENT_START_DASH: {
c = read();
switch(c) {
case -1: {
goto stateloop_end;
}
case '-': {
state = NS_HTML5META_SCANNER_COMMENT_END;
goto stateloop;
}
case '>': {
state = NS_HTML5META_SCANNER_DATA;
goto stateloop;
}
default: {
state = NS_HTML5META_SCANNER_COMMENT;
goto stateloop;
}
}
}
case NS_HTML5META_SCANNER_ATTRIBUTE_VALUE_SINGLE_QUOTED: {
for (; ; ) {
if (reconsume) {
reconsume = PR_FALSE;
} else {
c = read();
}
switch(c) {
case -1: {
goto stateloop_end;
}
case '\'': {
if (tryCharset()) {
goto stateloop_end;
}
state = NS_HTML5META_SCANNER_AFTER_ATTRIBUTE_VALUE_QUOTED;
goto stateloop;
}
default: {
if (metaState == NS_HTML5META_SCANNER_A && (contentIndex == 6 || charsetIndex == 6)) {
addToBuffer(c);
}
continue;
}
}
}
}
case NS_HTML5META_SCANNER_SCAN_UNTIL_GT: {
for (; ; ) {
if (reconsume) {
reconsume = PR_FALSE;
} else {
c = read();
}
switch(c) {
case -1: {
goto stateloop_end;
}
case '>': {
state = NS_HTML5META_SCANNER_DATA;
goto stateloop;
}
default: {
continue;
}
}
}
}
}
}
stateloop_end: ;
stateSave = state;
}
void
nsHtml5MetaScanner::addToBuffer(PRInt32 c)
{
if (strBufLen == strBuf.length) {
jArray<PRUnichar,PRInt32> newBuf = jArray<PRUnichar,PRInt32>(strBuf.length + (strBuf.length << 1));
nsHtml5ArrayCopy::arraycopy(strBuf, newBuf, strBuf.length);
strBuf.release();
strBuf = newBuf;
}
strBuf[strBufLen++] = (PRUnichar) c;
}
PRBool
nsHtml5MetaScanner::tryCharset()
{
if (metaState != NS_HTML5META_SCANNER_A || !(contentIndex == 6 || charsetIndex == 6)) {
return PR_FALSE;
}
nsString* attVal = nsHtml5Portability::newStringFromBuffer(strBuf, 0, strBufLen);
nsString* candidateEncoding;
if (contentIndex == 6) {
candidateEncoding = nsHtml5TreeBuilder::extractCharsetFromContent(attVal);
nsHtml5Portability::releaseString(attVal);
} else {
candidateEncoding = attVal;
}
if (!candidateEncoding) {
return PR_FALSE;
}
PRBool success = tryCharset(candidateEncoding);
nsHtml5Portability::releaseString(candidateEncoding);
contentIndex = -1;
charsetIndex = -1;
return success;
}
void
nsHtml5MetaScanner::initializeStatics()
{
}
void
nsHtml5MetaScanner::releaseStatics()
{
}
#include "nsHtml5MetaScannerCppSupplement.h"
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