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// Copyright 2010 Todd Ditchendorf
//
// Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#import "TDXmlTokenizer.h"
#import "XMLReader.h"
#import "TDXmlToken.h"
@interface TDXmlTokenizer ()
@property (nonatomic, retain) XMLReader *reader;
@end
@implementation TDXmlTokenizer
+ (id)tokenizerWithContentsOfFile:(NSString *)path {
return [[[self alloc] initWithContentsOfFile:path] autorelease];
}
- (id)init {
return nil;
}
- (id)initWithContentsOfFile:(NSString *)path {
self = [super init];
if (self) {
self.reader = [[[XMLReader alloc] initWithContentsOfFile:path] autorelease];
}
return self;
}
- (void)dealloc {
self.reader = nil;
[super dealloc];
}
- (TDXmlToken *)nextToken {
TDXmlToken *tok = nil;
NSInteger ret = -1;
NSInteger nodeType = -1;
do {
ret = [reader read];
nodeType = reader.nodeType;
} while (nodeType == TDTT_XML_SIGNIFICANT_WHITESPACE || nodeType == TDTT_XML_WHITESPACE);
if (ret <= 0) {
tok = [TDXmlToken EOFToken];
} else {
tok = [TDXmlToken tokenWithTokenType:reader.nodeType stringValue:reader.name];
}
return tok;
}
@synthesize reader;
@end