I have some XML which looks like this:
<?xml version='1.0'?>
<methodResponse>
<params>
<param>
<value><array><data>
<value><array><data>
<value><dateTime.iso8601>20100508T14:49:56</dateTime.iso8601></value>
<value><string></string></value>
<value><string>comment</string></value>
<value><string></string></value>
<value><string>Milestone milestone1 deleted</string></value>
<value><int>1</int></value>
</data></array></value>
</data></array></value>
</param>
</params>
</methodRepsonse>
NSXMLParser seems to not be giving any data back for the blank values resulting in an array with 4 items in it instead of 6.
Is there anything I can do to NSXMLParser to make it return an empty string for the blank values so that I can maintain the order of the data when it is returned?
So after whipping up a quick sample with a delegate that just prints out what's happening during parsing I don't see anything at all wrong with what's being parsed.
I suspect however that you're relying on an incorrect expectation that between calls to didStartElement... and didEndElement... you should get a foundCharacters... call with an empty string? My question is based on the way you phrased the title of your question because there's no such thing as a "blank value." Either there is a value, or there isn't.
Imagine instead your XML contained <string/> instead of the exactly equivalent <string></string>. You still get start/end notifications.
You should be creating your NSMutableString (presumably the type that you're using for your <string> elements) in didStartElement... when <string> is found, appending to that string IF foundCharacters... is called (it can get called more than once with the value in chunks), and tossing it into your array when it's done on didEndElement....
If you really want to be more robust, you'll also be wanting detect an error condition if you find the start of a new element before your string ends, assuming that it is in fact an error for you.
Not quite sure I understand your problem here. NSXMLParser would at least report the beginning and end of the elements. Would that not be enough the get them in the right order?
Related
Papa Parse seems wise, but I think he might be giving me null. I'm just:
Papa.parse(countries);
Where countries is a string containing the XMLHttpRequest of the countries csv file from a timezone database here:
https://timezonedb.com/download
But Papa Parse seems to have added an empty array to the end of it's data array. So when I'm searching and sorting through the array, that one empty guy at the end is giving me troubles. I can write around it but it's not ideal, and I thought Papa Parse was supposed to make those kind of csv parsing problems go away. Am I Parsing wrong?
Here is the end of the PapaParsed Array in console:
You need to use skipEmptyLines: true in parse config. For example:
Papa.parse(this.csvData, {skipEmptyLines: true,})
it was adding empty line to my iteration as well. i decided to skip it by doing loop:
for(let i=0;i<data.length -1;i++){
We can also use below syntax to remove empty lines from the record.
For example, in order to remove empty values from header, we can use the below code snippet.
headers.filter(Boolean);
In my app Web services are created in dot net and i am consuming those and I am getting response.In that all the fields like company,type,location everything are strings and there is no problem with this..And there is one more field called Exhibit number actually it is a Integer but they are created as string only.While I am displaying this it is showing zero instead of that number.. Here is my code...
//Storing into Array
[SurveyFilesArray addObject:[NSDictionary dictionaryWithObjectsAndKeys:[dic objectForKey:#"FileName"],#"FileName",[dic objectForKey:#"ExibhitNumber"],#"ExhibitNumber",[dic objectForKey:#"Description"],#"Description",[dic objectForKey:#"FileQuality"],#"FileQuality",nil]];
//Retrieving from Array..
NSLog(#"???%#???",[NSString stringWithFormat:#"%d",[[[SurveyFilesArray objectAtIndex:indexPath.row]objectForKey:#"ExibhitNumber"]intValue]]);
NSLog(#"%d",[[[SurveyFilesArray objectAtIndex:indexPath.row]objectForKey:#"ExibhitNumber"]intValue]);
You have typos in your code.
In the order of your code:
Ex-ib-hit-Number
Ex-hib-it-Number
These are 2 different strings.
In your example code you save it correctly written as Ex-hib-it. But you try to access it with ex-ib-hit afterwards. This cannot work.
I have the following Problem, given this XML Datastructure:
<level1>
<level2ElementTypeA></level2ElementTypeA>
<level2ElementTypeB>
<level3ElementTypeA>String1Ineed<level3ElementTypeB>
</level2ElementTypeB>
...
<level2ElementTypeC>
<level3ElementTypeB attribute1>
<level4ElementTypeA>String2Ineed<level4ElementTypeA>
<level3ElementTypeB>
<level2ElementTypeC>
...
<level2ElementTypeD></level2ElementTypeD>
</level1>
<level1>...</level1>
I need to create an Entity which contain: String1Ineed and String2Ineed.
So every time I came across a level3ElementTypeB with a certain value in attribute1, I have my String2Ineed. The ugly part is how to obtain String1Ineed, which is located in the first element of type level2ElementTypeB above the current level2ElementTypeC.
My 'imperative' solution looks like that that I always keep an variable with the last value of String1Ineed and if I hit criteria for String2Ineed, I simply use that. If we look at this from a plain collection processing point of view. How would you model the backtracking logic between String1Ineed and String2Ineed? Using the State Monad?
Isn't this what XPATH is for? You can find String2Ineed and then change the axis to search back for String1Ineed.
This question has been asked before, I know. However, nobody has answered it well. I'm wondering how to parse a PDF's "table of contents" on the iPhone. The docs tell me to use CGPDFDocumentGetCatalog but not how to use it. All they say is that it returns a dictionary. Also, I can't find any example code. Any suggestions?
looks like the closest thing seen on SO is Create a table of contents from a pdf file
It's basically just parsing the CGPDFDictionary called "Outline" in the CGPDFPage.
// get outline & loop through dictionary...
CGPDFDictionaryRef outlineRef;
if(CGPDFDictionaryGetDictionary(pdfDocDictionary, "Outlines", &outlineRef)) {
}
then you start with the First element and parse your way through.
CGPDFDictionaryGetDictionary(outlineRef, "First", &firstEntry)
You want to get the Title and the Destination.
NSString *outlineTitle = PSPDFStringFromPDFDict(outlineElementRef, #"Title");
CGPDFDictionaryGetObject(outlineElementRef, "Dest", &destinationRef)
The tricky thing starts with getting the correct destination, because there are (horray, PDF!) several ways to store it, plus several ways that are not defined in the PDF Reference but still out in the wild. Plus several variants that are just broken and you have to deal with it.
For example, you could get the Count of the outline dictionary using
CGPDFInteger elements;
if(CGPDFDictionaryGetInteger(outlineRef, "Count", &elements)) {
PSPDFLog(#"parsing outline: %ld elements. (Count will be ignored anyway)", (long int)elements);
}else {
PSPDFLogError(#"Error while parsing outline. No outlineRef?");
}
But note that Count sometimes is invalid due to broken PDF creation tools. See PDF as HTML. Even if it's broken, parsers will do their best to display as much data as they can. So my advice is to ignore Count and parse the dictionary anyway. (A few weeks ago I encountered a document that had Count = -10. Go figure)
I can't post the full code, as it's from my commercial PDF library PSPDFKit, and I need to make a living out of it ;) But this should get you started.
EDIT*
hi guys , lets say i have an array with 5 Strings = "1","2","3","4","5".
Im also doing parsing of xml. So how do i check whether a parse xml value is the same value of either one of the objects IN the array?
solved * i put them in a for loop to, looping through each array.value and making a root (if else) that checks whether the value in the array is equal to the parsed xml value