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HTMLTokenizer.m
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HTMLTokenizer.m
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// HTMLTokenizer.m
//
// Public domain. https://github.com/nolanw/HTMLReader
#import "HTMLTokenizer.h"
#import "HTMLEntities.h"
#import "HTMLParser.h"
#import "HTMLPreprocessedInputStream.h"
#import "HTMLString.h"
@interface HTMLTagToken ()
- (void)appendLongCharacterToTagName:(UTF32Char)character;
@end
@interface HTMLDOCTYPEToken ()
- (void)appendLongCharacterToName:(UTF32Char)character;
- (void)appendStringToPublicIdentifier:(NSString *)string;
- (void)appendStringToSystemIdentifier:(NSString *)string;
@end
@interface HTMLCommentToken ()
- (void)appendString:(NSString *)string;
- (void)appendLongCharacter:(UTF32Char)character;
@end
@interface HTMLParser ()
@property (readonly, strong, nonatomic) HTMLElement *adjustedCurrentNode;
@end
@implementation HTMLTokenizer
{
HTMLPreprocessedInputStream *_inputStream;
HTMLTokenizerState _state;
NSMutableArray *_tokenQueue;
NSMutableString *_characterBuffer;
id _currentToken;
HTMLTokenizerState _sourceAttributeValueState;
NSMutableString *_currentAttributeName;
NSMutableString *_currentAttributeValue;
NSMutableString *_temporaryBuffer;
UTF32Char _additionalAllowedCharacter;
NSString *_mostRecentEmittedStartTagName;
BOOL _done;
}
- (instancetype)initWithString:(NSString *)string
{
self = [super init];
if (!self) return nil;
_inputStream = [[HTMLPreprocessedInputStream alloc] initWithString:string];
__weak __typeof__(self) weakSelf = self;
[_inputStream setErrorBlock:^(NSString *error) {
[weakSelf emitParseError:@"%@", error];
}];
self.state = HTMLDataTokenizerState;
_tokenQueue = [NSMutableArray new];
_characterBuffer = [NSMutableString new];
return self;
}
- (NSString *)string
{
return _inputStream.string;
}
- (void)setLastStartTag:(NSString *)tagName
{
_mostRecentEmittedStartTagName = [tagName copy];
}
- (void)dataState
{
NSString *string = [self consumeCharactersUpToFirstPassingTest:^BOOL(UTF32Char c) {
if (c == '\0') {
[self emitParseError:@"U+0000 NULL in data state"];
}
return c == '&' || c == '<';
}];
[self emitCharacterTokenWithString:string];
switch ([self consumeNextInputCharacter]) {
case '&':
return [self switchToState:HTMLCharacterReferenceInDataTokenizerState];
case '<':
return [self switchToState:HTMLTagOpenTokenizerState];
case EOF:
_done = YES;
break;
}
}
- (void)characterReferenceInDataState
{
[self switchToState:HTMLDataTokenizerState];
_additionalAllowedCharacter = (UTF32Char)EOF;
NSString *data = [self attemptToConsumeCharacterReference];
if (data) {
[self emitCharacterTokenWithString:data];
} else {
[self emitCharacterTokenWithString:@"&"];
}
}
- (void)RCDATAState
{
NSString *string = [self consumeCharactersUpToFirstPassingTest:^BOOL(UTF32Char c) {
if (c == '\0') {
[self emitParseError:@"U+0000 NULL in RCDATA state"];
}
return c == '&' || c == '<';
}];
[self emitCharacterTokenWithString:[string stringByReplacingOccurrencesOfString:@"\0" withString:@"\uFFFD"]];
switch ([self consumeNextInputCharacter]) {
case '&':
return [self switchToState:HTMLCharacterReferenceInRCDATATokenizerState];
case '<':
return [self switchToState:HTMLRCDATALessThanSignTokenizerState];
case EOF:
_done = YES;
break;
}
}
- (void)characterReferenceInRCDATAState
{
[self switchToState:HTMLRCDATATokenizerState];
_additionalAllowedCharacter = (UTF32Char)EOF;
NSString *data = [self attemptToConsumeCharacterReference];
if (data) {
[self emitCharacterTokenWithString:data];
} else {
[self emitCharacterTokenWithString:@"&"];
}
}
- (void)RAWTEXTState
{
NSString *string = [self consumeCharactersUpToFirstPassingTest:^BOOL(UTF32Char c) {
if (c == '\0') {
[self emitParseError:@"U+0000 NULL in RAWTEXT state"];
}
return c == '<';
}];
[self emitCharacterTokenWithString:[string stringByReplacingOccurrencesOfString:@"\0" withString:@"\uFFFD"]];
switch ([self consumeNextInputCharacter]) {
case '<':
return [self switchToState:HTMLRAWTEXTLessThanSignTokenizerState];
case EOF:
_done = YES;
break;
}
}
- (void)scriptDataState
{
NSString *string = [self consumeCharactersUpToFirstPassingTest:^BOOL(UTF32Char c) {
if (c == '\0') {
[self emitParseError:@"U+0000 NULL in script data state"];
}
return c == '<';
}];
[self emitCharacterTokenWithString:[string stringByReplacingOccurrencesOfString:@"\0" withString:@"\uFFFD"]];
switch ([self consumeNextInputCharacter]) {
case '<':
return [self switchToState:HTMLScriptDataLessThanSignTokenizerState];
case EOF:
_done = YES;
break;
}
}
- (void)PLAINTEXTState
{
NSString *string = [self consumeCharactersUpToFirstPassingTest:^BOOL(UTF32Char c) {
if (c == '\0') {
[self emitParseError:@"U+0000 NULL in PLAINTEXT state"];
}
return NO;
}];
[self emitCharacterTokenWithString:[string stringByReplacingOccurrencesOfString:@"\0" withString:@"\uFFFD"]];
_done = YES;
}
static inline BOOL is_upper(NSInteger c)
{
return c >= 'A' && c <= 'Z';
}
static inline BOOL is_lower(NSInteger c)
{
return c >= 'a' && c <= 'z';
}
- (void)tagOpenState
{
UTF32Char c;
switch (c = [self consumeNextInputCharacter]) {
case '!':
[self switchToState:HTMLMarkupDeclarationOpenTokenizerState];
break;
case '/':
[self switchToState:HTMLEndTagOpenTokenizerState];
break;
case '?':
[self emitParseError:@"Bogus ? in tag open state"];
[self switchToState:HTMLBogusCommentTokenizerState];
// SPEC We are to "emit a comment token whose data is the concatenation of all characters starting from and including the character that caused the state machine to switch into the bogus comment state...". This is effectively, but not explicitly, reconsuming the current input character.
[_inputStream reconsumeCurrentInputCharacter];
break;
default:
if (is_upper(c) || is_lower(c)) {
_currentToken = [HTMLStartTagToken new];
unichar toAppend = c + (is_upper(c) ? 0x0020 : 0);
[_currentToken appendLongCharacterToTagName:toAppend];
[self switchToState:HTMLTagNameTokenizerState];
} else {
[self emitParseError:@"Unexpected character in tag open state"];
[self switchToState:HTMLDataTokenizerState];
[self emitCharacterTokenWithString:@"<"];
[self reconsume:c];
}
break;
}
}
- (void)endTagOpenState
{
UTF32Char c;
switch (c = [self consumeNextInputCharacter]) {
case '>':
[self emitParseError:@"Unexpected > in end tag open state"];
[self switchToState:HTMLDataTokenizerState];
break;
case EOF:
[self emitParseError:@"EOF in end tag open state"];
[self switchToState:HTMLDataTokenizerState];
[self emitCharacterTokenWithString:@"</"];
[self reconsume:c];
break;
default:
if (is_upper(c) || is_lower(c)) {
_currentToken = [HTMLEndTagToken new];
unichar toAppend = c + (is_upper(c) ? 0x0020 : 0);
[_currentToken appendLongCharacterToTagName:toAppend];
[self switchToState:HTMLTagNameTokenizerState];
} else {
[self emitParseError:@"Unexpected character in end tag open state"];
[self switchToState:HTMLBogusCommentTokenizerState];
// SPEC We are to "emit a comment token whose data is the concatenation of all characters starting from and including the character that caused the state machine to switch into the bogus comment state...". This is effectively, but not explicitly, reconsuming the current input character.
[self reconsume:c];
}
break;
}
}
- (void)tagNameState
{
UTF32Char c;
switch (c = [self consumeNextInputCharacter]) {
case '\t':
case '\n':
case '\f':
case ' ':
[self switchToState:HTMLBeforeAttributeNameTokenizerState];
break;
case '/':
[self switchToState:HTMLSelfClosingStartTagTokenizerState];
break;
case '>':
[self switchToState:HTMLDataTokenizerState];
[self emitCurrentToken];
break;
case '\0':
[self emitParseError:@"U+0000 NULL in tag name state"];
[_currentToken appendLongCharacterToTagName:0xFFFD];
break;
case EOF:
[self emitParseError:@"EOF in tag name state"];
[self switchToState:HTMLDataTokenizerState];
break;
default:
if (is_upper(c)) {
[_currentToken appendLongCharacterToTagName:(UTF32Char)c + 0x0020];
} else {
[_currentToken appendLongCharacterToTagName:(UTF32Char)c];
}
break;
}
}
- (void)RCDATALessThanSignState
{
UTF32Char c = [self consumeNextInputCharacter];
if (c == '/') {
_temporaryBuffer = [NSMutableString new];
[self switchToState:HTMLRCDATAEndTagOpenTokenizerState];
} else {
[self switchToState:HTMLRCDATATokenizerState];
[self emitCharacterTokenWithString:@"<"];
[self reconsume:c];
}
}
- (void)RCDATAEndTagOpenState
{
UTF32Char c = [self consumeNextInputCharacter];
if (is_upper(c)) {
_currentToken = [HTMLEndTagToken new];
[_currentToken appendLongCharacterToTagName:(UTF32Char)c + 0x0020];
AppendLongCharacter(_temporaryBuffer, (UTF32Char)c);
[self switchToState:HTMLRCDATAEndTagNameTokenizerState];
} else if (is_lower(c)) {
_currentToken = [HTMLEndTagToken new];
[_currentToken appendLongCharacterToTagName:(UTF32Char)c];
AppendLongCharacter(_temporaryBuffer, (UTF32Char)c);
[self switchToState:HTMLRCDATAEndTagNameTokenizerState];
} else {
[self switchToState:HTMLRCDATATokenizerState];
[self emitCharacterTokenWithString:@"</"];
[self reconsume:c];
}
}
- (void)RCDATAEndTagNameState
{
UTF32Char c;
switch (c = [self consumeNextInputCharacter]) {
case '\t':
case '\n':
case '\f':
case ' ':
if ([self currentTagIsAppropriateEndTagToken]) {
[self switchToState:HTMLBeforeAttributeNameTokenizerState];
return;
}
break;
case '/':
if ([self currentTagIsAppropriateEndTagToken]) {
[self switchToState:HTMLSelfClosingStartTagTokenizerState];
return;
}
break;
case '>':
if ([self currentTagIsAppropriateEndTagToken]) {
[self switchToState:HTMLDataTokenizerState];
[self emitCurrentToken];
return;
}
break;
}
if (is_upper(c)) {
[_currentToken appendLongCharacterToTagName:(UTF32Char)c + 0x0020];
AppendLongCharacter(_temporaryBuffer, (UTF32Char)c);
} else if (is_lower(c)) {
[_currentToken appendLongCharacterToTagName:(UTF32Char)c];
AppendLongCharacter(_temporaryBuffer, (UTF32Char)c);
} else {
[self switchToState:HTMLRCDATATokenizerState];
[self emitCharacterTokenWithString:@"</"];
[self emitCharacterTokenWithString:_temporaryBuffer];
[self reconsume:c];
}
}
- (void)RAWTEXTLessThanSignState
{
UTF32Char c = [self consumeNextInputCharacter];
if (c == '/') {
_temporaryBuffer = [NSMutableString new];
[self switchToState:HTMLRAWTEXTEndTagOpenTokenizerState];
} else {
[self switchToState:HTMLRAWTEXTTokenizerState];
[self emitCharacterTokenWithString:@"<"];
[self reconsume:c];
}
}
- (void)RAWTEXTEndTagOpenState
{
UTF32Char c = [self consumeNextInputCharacter];
if (is_upper(c)) {
_currentToken = [HTMLEndTagToken new];
[_currentToken appendLongCharacterToTagName:(UTF32Char)c + 0x0020];
AppendLongCharacter(_temporaryBuffer, (UTF32Char)c);
[self switchToState:HTMLRAWTEXTEndTagNameTokenizerState];
} else if (is_lower(c)) {
_currentToken = [HTMLEndTagToken new];
[_currentToken appendLongCharacterToTagName:(UTF32Char)c];
AppendLongCharacter(_temporaryBuffer, (UTF32Char)c);
[self switchToState:HTMLRAWTEXTEndTagNameTokenizerState];
} else {
[self switchToState:HTMLRAWTEXTTokenizerState];
[self emitCharacterTokenWithString:@"</"];
[self reconsume:c];
}
}
- (void)RAWTEXTEndTagNameState
{
UTF32Char c;
switch (c = [self consumeNextInputCharacter]) {
case '\t':
case '\n':
case '\f':
case ' ':
if ([self currentTagIsAppropriateEndTagToken]) {
[self switchToState:HTMLBeforeAttributeNameTokenizerState];
return;
}
break;
case '/':
if ([self currentTagIsAppropriateEndTagToken]) {
[self switchToState:HTMLSelfClosingStartTagTokenizerState];
return;
}
break;
case '>':
if ([self currentTagIsAppropriateEndTagToken]) {
[self switchToState:HTMLDataTokenizerState];
[self emitCurrentToken];
return;
}
break;
}
if (is_upper(c)) {
[_currentToken appendLongCharacterToTagName:(UTF32Char)c + 0x0020];
AppendLongCharacter(_temporaryBuffer, (UTF32Char)c);
} else if (is_lower(c)) {
[_currentToken appendLongCharacterToTagName:(UTF32Char)c];
AppendLongCharacter(_temporaryBuffer, (UTF32Char)c);
} else {
[self switchToState:HTMLRAWTEXTTokenizerState];
[self emitCharacterTokenWithString:@"</"];
[self emitCharacterTokenWithString:_temporaryBuffer];
[self reconsume:c];
}
}
- (void)scriptDataLessThanSignState
{
UTF32Char c;
switch (c = [self consumeNextInputCharacter]) {
case '/':
_temporaryBuffer = [NSMutableString new];
[self switchToState:HTMLScriptDataEndTagOpenTokenizerState];
break;
case '!':
[self switchToState:HTMLScriptDataEscapeStartTokenizerState];
[self emitCharacterTokenWithString:@"<!"];
break;
default:
[self switchToState:HTMLScriptDataTokenizerState];
[self emitCharacterTokenWithString:@"<"];
[self reconsume:c];
break;
}
}
- (void)scriptDataEndTagOpenState
{
UTF32Char c = [self consumeNextInputCharacter];
if (is_upper(c)) {
_currentToken = [HTMLEndTagToken new];
[_currentToken appendLongCharacterToTagName:(UTF32Char)c + 0x0020];
AppendLongCharacter(_temporaryBuffer, (UTF32Char)c);
[self switchToState:HTMLScriptDataEndTagNameTokenizerState];
} else if (is_lower(c)) {
_currentToken = [HTMLEndTagToken new];
[_currentToken appendLongCharacterToTagName:(UTF32Char)c];
AppendLongCharacter(_temporaryBuffer, (UTF32Char)c);
[self switchToState:HTMLScriptDataEndTagNameTokenizerState];
} else {
[self switchToState:HTMLScriptDataTokenizerState];
[self emitCharacterTokenWithString:@"</"];
[self reconsume:c];
}
}
- (void)scriptDataEndTagNameState
{
UTF32Char c;
switch (c = [self consumeNextInputCharacter]) {
case '\t':
case '\n':
case '\f':
case ' ':
if ([self currentTagIsAppropriateEndTagToken]) {
[self switchToState:HTMLBeforeAttributeNameTokenizerState];
return;
}
break;
case '/':
if ([self currentTagIsAppropriateEndTagToken]) {
[self switchToState:HTMLSelfClosingStartTagTokenizerState];
return;
}
break;
case '>':
if ([self currentTagIsAppropriateEndTagToken]) {
[self switchToState:HTMLDataTokenizerState];
[self emitCurrentToken];
return;
}
break;
}
if (is_upper(c)) {
[_currentToken appendLongCharacterToTagName:(UTF32Char)c + 0x0020];
AppendLongCharacter(_temporaryBuffer, (UTF32Char)c);
} else if (is_lower(c)) {
[_currentToken appendLongCharacterToTagName:(UTF32Char)c];
AppendLongCharacter(_temporaryBuffer, (UTF32Char)c);
} else {
[self switchToState:HTMLScriptDataTokenizerState];
[self emitCharacterTokenWithString:@"</"];
[self emitCharacterTokenWithString:_temporaryBuffer];
[self reconsume:c];
}
}
- (void)scriptDataEscapeStartState
{
UTF32Char c = [self consumeNextInputCharacter];
if (c == '-') {
[self switchToState:HTMLScriptDataEscapeStartDashTokenizerState];
[self emitCharacterTokenWithString:@"-"];
} else {
[self switchToState:HTMLScriptDataTokenizerState];
[self reconsume:c];
}
}
- (void)scriptDataEscapeStartDashState
{
UTF32Char c = [self consumeNextInputCharacter];
if (c == '-') {
[self switchToState:HTMLScriptDataEscapedDashDashTokenizerState];
[self emitCharacterTokenWithString:@"-"];
} else {
[self switchToState:HTMLScriptDataTokenizerState];
[self reconsume:c];
}
}
- (void)scriptDataEscapedState
{
NSString *string = [self consumeCharactersUpToFirstPassingTest:^BOOL(UTF32Char c) {
if (c == '\0') {
[self emitParseError:@"U+0000 NULL in script data escaped state"];
}
return c == '-' || c == '<';
}];
[self emitCharacterTokenWithString:[string stringByReplacingOccurrencesOfString:@"\0" withString:@"\uFFFD"]];
switch ([self consumeNextInputCharacter]) {
case '-':
[self switchToState:HTMLScriptDataEscapedDashTokenizerState];
[self emitCharacterTokenWithString:@"-"];
break;
case '<':
return [self switchToState:HTMLScriptDataEscapedLessThanSignTokenizerState];
case EOF:
[self switchToState:HTMLDataTokenizerState];
[self emitParseError:@"EOF in script data escaped state"];
[self reconsume:EOF];
break;
}
}
- (void)scriptDataEscapedDashState
{
UTF32Char c;
switch (c = [self consumeNextInputCharacter]) {
case '-':
[self switchToState:HTMLScriptDataEscapedDashDashTokenizerState];
[self emitCharacterTokenWithString:@"-"];
break;
case '<':
[self switchToState:HTMLScriptDataEscapedLessThanSignTokenizerState];
break;
case '\0':
[self emitParseError:@"U+0000 NULL in script data escaped dash state"];
[self switchToState:HTMLScriptDataEscapedTokenizerState];
[self emitCharacterTokenWithString:@"\uFFFD"];
break;
case EOF:
[self emitParseError:@"EOF in script data escaped dash state"];
[self switchToState:HTMLDataTokenizerState];
[self reconsume:EOF];
break;
default:
[self switchToState:HTMLScriptDataEscapedTokenizerState];
[self emitCharacterToken:(UTF32Char)c];
break;
}
}
- (void)scriptDataEscapedDashDashState
{
UTF32Char c;
switch (c = [self consumeNextInputCharacter]) {
case '-':
[self emitCharacterTokenWithString:@"-"];
break;
case '<':
[self switchToState:HTMLScriptDataEscapedLessThanSignTokenizerState];
break;
case '>':
[self switchToState:HTMLScriptDataTokenizerState];
[self emitCharacterTokenWithString:@">"];
break;
case '\0':
[self emitParseError:@"U+0000 NULL in script data escaped dash dash state"];
[self switchToState:HTMLScriptDataEscapedTokenizerState];
[self emitCharacterTokenWithString:@"\uFFFD"];
break;
case EOF:
[self emitParseError:@"EOF in script data escaped dash dash state"];
[self switchToState:HTMLDataTokenizerState];
[self reconsume:EOF];
break;
default:
[self switchToState:HTMLScriptDataEscapedTokenizerState];
[self emitCharacterToken:(UTF32Char)c];
break;
}
}
- (void)scriptDataEscapedLessThanSignState
{
UTF32Char c;
switch (c = [self consumeNextInputCharacter]) {
case '/':
_temporaryBuffer = [NSMutableString new];
[self switchToState:HTMLScriptDataEscapedEndTagOpenTokenizerState];
break;
default:
if (is_upper(c)) {
_temporaryBuffer = [NSMutableString new];
AppendLongCharacter(_temporaryBuffer, (UTF32Char)c + 0x0020);
[self switchToState:HTMLScriptDataDoubleEscapeStartTokenizerState];
[self emitCharacterTokenWithString:@"<"];
[self emitCharacterToken:(UTF32Char)c];
} else if (is_lower(c)) {
_temporaryBuffer = [NSMutableString new];
AppendLongCharacter(_temporaryBuffer, (UTF32Char)c);
[self switchToState:HTMLScriptDataDoubleEscapeStartTokenizerState];
[self emitCharacterTokenWithString:@"<"];
[self emitCharacterToken:(UTF32Char)c];
} else {
[self switchToState:HTMLScriptDataEscapedTokenizerState];
[self emitCharacterTokenWithString:@"<"];
[self reconsume:c];
}
break;
}
}
- (void)scriptDataEscapedEndTagOpenState
{
UTF32Char c = [self consumeNextInputCharacter];
if (is_upper(c)) {
_currentToken = [HTMLEndTagToken new];
[_currentToken appendLongCharacterToTagName:(UTF32Char)c + 0x0020];
AppendLongCharacter(_temporaryBuffer, (UTF32Char)c);
[self switchToState:HTMLScriptDataEscapedEndTagNameTokenizerState];
} else if (is_lower(c)) {
_currentToken = [HTMLEndTagToken new];
[_currentToken appendLongCharacterToTagName:(UTF32Char)c];
AppendLongCharacter(_temporaryBuffer, (UTF32Char)c);
[self switchToState:HTMLScriptDataEscapedEndTagNameTokenizerState];
} else {
[self switchToState:HTMLScriptDataEscapedTokenizerState];
[self emitCharacterTokenWithString:@"</"];
[self reconsume:c];
}
}
- (void)scriptDataEscapedEndTagNameState
{
UTF32Char c;
switch (c = [self consumeNextInputCharacter]) {
case '\t':
case '\n':
case '\f':
case ' ':
if ([self currentTagIsAppropriateEndTagToken]) {
[self switchToState:HTMLBeforeAttributeNameTokenizerState];
return;
}
break;
case '/':
if ([self currentTagIsAppropriateEndTagToken]) {
[self switchToState:HTMLSelfClosingStartTagTokenizerState];
return;
}
break;
case '>':
if ([self currentTagIsAppropriateEndTagToken]) {
[self switchToState:HTMLDataTokenizerState];
[self emitCurrentToken];
return;
}
break;
}
if (is_upper(c)) {
[_currentToken appendLongCharacterToTagName:(UTF32Char)c + 0x0020];
AppendLongCharacter(_temporaryBuffer, (UTF32Char)c);
} else if (is_lower(c)) {
[_currentToken appendLongCharacterToTagName:(UTF32Char)c];
AppendLongCharacter(_temporaryBuffer, (UTF32Char)c);
} else {
[self switchToState:HTMLScriptDataEscapedTokenizerState];
[self emitCharacterTokenWithString:@"</"];
[self emitCharacterTokenWithString:_temporaryBuffer];
[self reconsume:c];
}
}
- (void)scriptDataDoubleEscapeStartState
{
UTF32Char c;
switch (c = [self consumeNextInputCharacter]) {
case '\t':
case '\n':
case '\f':
case ' ':
case '/':
case '>':
if ([_temporaryBuffer isEqualToString:@"script"]) {
[self switchToState:HTMLScriptDataDoubleEscapedTokenizerState];
} else {
[self switchToState:HTMLScriptDataEscapedTokenizerState];
}
[self emitCharacterToken:(UTF32Char)c];
break;
default:
if (is_upper(c)) {
AppendLongCharacter(_temporaryBuffer, (UTF32Char)c + 0x0020);
[self emitCharacterToken:(UTF32Char)c];
} else if (is_lower(c)) {
AppendLongCharacter(_temporaryBuffer, (UTF32Char)c);
[self emitCharacterToken:(UTF32Char)c];
} else {
[self switchToState:HTMLScriptDataEscapedTokenizerState];
[self reconsume:c];
}
break;
}
}
- (void)scriptDataDoubleEscapedState
{
NSString *string = [self consumeCharactersUpToFirstPassingTest:^BOOL(UTF32Char c) {
if (c == '\0') {
[self emitParseError:@"U+0000 NULL in script data double escaped state"];
}
return c == '-' || c == '<';
}];
[self emitCharacterTokenWithString:[string stringByReplacingOccurrencesOfString:@"\0" withString:@"\uFFFD"]];
switch ([self consumeNextInputCharacter]) {
case '-':
[self switchToState:HTMLScriptDataDoubleEscapedDashTokenizerState];
[self emitCharacterTokenWithString:@"-"];
break;
case '<':
[self switchToState:HTMLScriptDataDoubleEscapedLessThanSignTokenizerState];
[self emitCharacterTokenWithString:@"<"];
break;
case EOF:
[self emitParseError:@"EOF in script data double escaped state"];
[self switchToState:HTMLDataTokenizerState];
[self reconsume:EOF];
break;
}
}
- (void)scriptDataDoubleEscapedDashState
{
UTF32Char c;
switch (c = [self consumeNextInputCharacter]) {
case '-':
[self switchToState:HTMLScriptDataDoubleEscapedDashDashTokenizerState];
[self emitCharacterTokenWithString:@"-"];
break;
case '<':
[self switchToState:HTMLScriptDataDoubleEscapedLessThanSignTokenizerState];
[self emitCharacterTokenWithString:@"<"];
break;
case '\0':
[self emitParseError:@"U+0000 NULL in script data double escaped dash state"];
[self switchToState:HTMLScriptDataDoubleEscapedTokenizerState];
[self emitCharacterTokenWithString:@"\uFFFD"];
break;
case EOF:
[self emitParseError:@"EOF in script data double escaped dash state"];
[self switchToState:HTMLDataTokenizerState];
[self reconsume:EOF];
break;
default:
[self switchToState:HTMLScriptDataDoubleEscapedTokenizerState];
[self emitCharacterToken:(UTF32Char)c];
break;
}
}
- (void)scriptDataDoubleEscapedDashDashState
{
UTF32Char c;
switch (c = [self consumeNextInputCharacter]) {
case '-':
[self emitCharacterTokenWithString:@"-"];
break;
case '<':
[self switchToState:HTMLScriptDataDoubleEscapedLessThanSignTokenizerState];
[self emitCharacterTokenWithString:@"<"];
break;
case '>':
[self switchToState:HTMLScriptDataTokenizerState];
[self emitCharacterTokenWithString:@">"];
break;
case '\0':
[self emitParseError:@"U+0000 NULL in script data double escaped dash dash state"];
[self switchToState:HTMLScriptDataDoubleEscapedTokenizerState];
[self emitCharacterTokenWithString:@"\uFFFD"];
break;
case EOF:
[self emitParseError:@"EOF in script data double escaped dash dash state"];
[self switchToState:HTMLDataTokenizerState];
[self reconsume:EOF];
break;
default:
[self switchToState:HTMLScriptDataDoubleEscapedTokenizerState];
[self emitCharacterToken:(UTF32Char)c];
break;
}
}
- (void)scriptDataDoubleEscapedLessThanSignState
{
UTF32Char c = [self consumeNextInputCharacter];
if (c == '/') {
_temporaryBuffer = [NSMutableString new];
[self switchToState:HTMLScriptDataDoubleEscapeEndTokenizerState];
[self emitCharacterTokenWithString:@"/"];
} else {
[self switchToState:HTMLScriptDataDoubleEscapedTokenizerState];
[self reconsume:c];
}
}
- (void)scriptDataDoubleEscapeEndState
{
UTF32Char c;
switch (c = [self consumeNextInputCharacter]) {
case '\t':
case '\n':
case '\f':
case ' ':
case '/':
case '>':
if ([_temporaryBuffer isEqualToString:@"script"]) {
[self switchToState:HTMLScriptDataEscapedTokenizerState];
} else {
[self switchToState:HTMLScriptDataDoubleEscapedTokenizerState];
}
[self emitCharacterToken:(UTF32Char)c];
break;
default:
if (is_upper(c)) {
AppendLongCharacter(_temporaryBuffer, (UTF32Char)c + 0x0020);
[self emitCharacterToken:(UTF32Char)c];
} else if (is_lower(c)) {
AppendLongCharacter(_temporaryBuffer, (UTF32Char)c);
[self emitCharacterToken:(UTF32Char)c];
} else {
[self switchToState:HTMLScriptDataDoubleEscapedTokenizerState];
[self reconsume:c];
}
break;
}
}
- (void)beforeAttributeNameState
{
UTF32Char c;
switch (c = [self consumeNextInputCharacter]) {
case '\t':
case '\n':
case '\f':
case ' ':
break;
case '/':
[self switchToState:HTMLSelfClosingStartTagTokenizerState];
break;
case '>':
[self switchToState:HTMLDataTokenizerState];
[self emitCurrentToken];
break;
case '\0':
[self emitParseError:@"U+0000 NULL in before attribute name state"];
_currentAttributeName = [NSMutableString new];
AppendLongCharacter(_currentAttributeName, 0xFFFD);
[self switchToState:HTMLAttributeNameTokenizerState];
break;
case '"':
case '\'':
case '<':
case '=':
[self emitParseError:@"Unexpected %c in before attribute name state", (char)c];
goto anythingElse;
case EOF:
[self emitParseError:@"EOF in before attribute name state"];
[self switchToState:HTMLDataTokenizerState];
[self reconsume:EOF];
break;
default:
anythingElse:
_currentAttributeName = [NSMutableString new];
if (is_upper(c)) {
AppendLongCharacter(_currentAttributeName, (UTF32Char)c + 0x0020);
} else {
AppendLongCharacter(_currentAttributeName, (UTF32Char)c);
}
[self switchToState:HTMLAttributeNameTokenizerState];
break;
}
}
- (void)attributeNameState
{
UTF32Char c;
switch (c = [self consumeNextInputCharacter]) {
case '\t':
case '\n':
case '\f':
case ' ':
[self switchToState:HTMLAfterAttributeNameTokenizerState];
break;
case '/':
[self addCurrentAttributeToCurrentToken];
[self switchToState:HTMLSelfClosingStartTagTokenizerState];
break;
case '=':
[self switchToState:HTMLBeforeAttributeValueTokenizerState];
break;
case '>':
[self addCurrentAttributeToCurrentToken];
[self switchToState:HTMLDataTokenizerState];
[self emitCurrentToken];
break;
case '\0':
[self emitParseError:@"U+0000 NULL in attribute name state"];
AppendLongCharacter(_currentAttributeName, 0xFFFD);
break;
case '"':
case '\'':
case '<':
[self emitParseError:@"Unexpected %c in attribute name state", (char)c];
goto anythingElse;
case EOF:
[self emitParseError:@"EOF in attribute name state"];
[self addCurrentAttributeToCurrentToken];
[self switchToState:HTMLDataTokenizerState];
[self reconsume:EOF];
break;
default:
anythingElse:
if (is_upper(c)) {
AppendLongCharacter(_currentAttributeName, (UTF32Char)c + 0x0020);
} else {
AppendLongCharacter(_currentAttributeName, (UTF32Char)c);
}
break;
}
}
- (void)afterAttributeNameState
{
UTF32Char c;
switch (c = [self consumeNextInputCharacter]) {
case '\t':
case '\n':
case '\f':
case ' ':
break;
case '/':
[self addCurrentAttributeToCurrentToken];
[self switchToState:HTMLSelfClosingStartTagTokenizerState];
break;
case '=':
[self switchToState:HTMLBeforeAttributeValueTokenizerState];
break;