hpple: is it possible to get text value like javascript textContent - ios

Question

Is it possible to get only all the text content of the child elements recursively in hpple. Any method in TFHppleElement class?
such as the javascript
document.getElementById("testdiv").textContent

Answer 1

I'm using this code to get all content of the news title
NSURL *newURL = [NSURL URLWithString:#"http://somesite"];
NSData *newsData = [NSData dataWithContentsOfURL: newURL];
TFHpple *newsParser = [TFHpple hppleWithHTMLData: newsData];
NSString *newsXpathQueryString = #"//div[#class='item column-1']";
NSArray *newsNodes = [newsParser searchWithXPathQuery: newsXpathQueryString];
NSMutableArray *newNews = [[NSMutableArray alloc] initWithCapacity: 0];
for (TFHppleElement *element in newsNodes)
{
News *news = [[News alloc] init];
[newNews addObject: news];
news.title = [[element content] stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];
news.photo_url = [element objectForKey:#"src"];
_allNews = newNews;
[self.tableView reloadData];
}
}
you can use
news.title = [[element firstChild]content] to get children elements content

Answer 2

I wanted something like this - a quick boiler plate code, it is not an elegant solution with static contents. Please let me know, how can this be improved :)
#pragma mark - Hpple XML parser
/* The documents contents lots of nested div, table, span, style etc. */
- (NSString *) extractDefinition
{
NSString *html = [self.webView stringByEvaluatingJavaScriptFromString: #"document.getElementById('innerframe').innerHTML"];
if ([Resources stringIsEmpty:html]) {
return nil;
}
return [self extractSubDiv:html];
}
- (NSString *)extractSubDiv:(NSString *)html
{
TFHpple *hppleParser = [TFHpple hppleWithHTMLData:[html dataUsingEncoding:NSUTF8StringEncoding]];
NSString * xpathQuery;
xpathQuery = #"//div[#id='columnboth']";
NSArray * defNodes = [hppleParser searchWithXPathQuery:xpathQuery];
NSString * text = nil;
if ([defNodes count] > 0) {
TFHppleElement * element = [defNodes objectAtIndex:0];
text = [self parseContents:element];
} else {
xpathQuery = #"//div[#id='columnsingle']";
defNodes = [hppleParser searchWithXPathQuery:xpathQuery];
if ([defNodes count] > 0) {
TFHppleElement * element = [defNodes objectAtIndex:0];
text = [self parseContents:element];
}
}
return text;
}
- (NSString *) parseContents:(TFHppleElement *)element {
NSArray * innhold = [element searchWithXPathQuery:#"//div[contains(#class,'articlecontents')]"];
return [self getTextFromArray:innhold];
}
static NSMutableString * contents;
- (NSString *) getTextFromArray:(NSArray *)hppleElments {
NSMutableString * text = [[NSMutableString new] autorelease];
contents = nil;
contents = [[NSMutableString new] autorelease];
for (TFHppleElement * e in hppleElments) {
[text appendFormat:#"%# ", [self getText:e]];
}
return text;
}
/* Here are more nested div and then span for text. */
- (NSString *) getText:(TFHppleElement *)element
{
if ([element isTextNode]) {
[contents appendFormat:#" %#", element.content];
}
for (TFHppleElement * e in element.children) {
[self getText:e];
}
return contents;
}