objective C NSString stringwithformat of a URL - objective-c

i need my application to send an HTTP request to my server, this is the link, but for some reason, when i create an NSString stringwithformat not all of the string is copied into the string,
this is my URL:
http://192.168.50.204:8080/webapi/originate?sofia/internal/408%25192.168.50.204%20'set:effective_caller_id_number=722772408,bridge:sofia/gateway/012smile/<PHONENUMBER>#212.199.220.21'%20inline%200545890183%200545890183
if i put it in my browser it is working fine.
and this is the code:
self.feedURLString = [NSString stringWithFormat:#"http://192.168.50.204:8080/webapi/originate?sofia/internal/%#%25192.168.50.204%20'set:effective_caller_id_number=722772%#,bridge:sofia/gateway/012smile/%##212.199.220.21'%20inline%20%#%20%#",extention,extention,PhoneNumber,PhoneNumber, PhoneNumber];
keep in mind that there are some %20 and %25 in the URL, maybe it causes the problem...
the string i get in the NSLog is:
feedURLString = http://192.168.50.204:8080/webapi/originate?sofia/internal/408220'set:effective_caller_id_number=722772408,bridge:sofia/gateway/012smile/0545890183#212.199.220.21' 93610576nline2#2#

remove the %20 and %25 from the string
then use the stringByAddingPercentEscapesUsingEncoding command from NSString
string = [sURL stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];

You're right, the %20 are almost certainly causing a problem.
Any places in the string you want an actual % symbol in the result, you should be writing %%.
Another option that some people use is to leave the %s as they are, but use stringByReplacingOccurrencesOfString:withString: to do the substitiation.
eg:
NSString *str = #"http://{HOST}/{USER}/blah";
str = [str stringByReplacingOccurrencesOfString:"{HOST}" withString:hostname];
str = [str stringByReplacingOccurrencesOfString:"{USER}" withString:username];

Try writing the url with the normal characters instead of %20 and %25, then add in your variables, and when you have the complete url string use
[feedURLString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEndocing];
Edit: sorry for double, I guess the anwser was obvious :)

Related

NSURL: Escape Backslash using NSCharacterSet

This may be a duplicate question, but I have checked all over and can't find a working answer for iOS9. -stringByAddingPercentEscapesUsingEncoding has been deprecated. I need to use -stringByAddingPercentEncodingWithAllowedCharacters
Below is the string that needs the backslashes escaped so that the API can authenticate the session and return a response.
NSString *base = #"http://domain.com/interface/?end=imember";
NSCharacterSet *set = [NSCharacterSet URLQueryAllowedCharacterSet];
NSString *key = [#"&client_key=KOB3N6KX9JXF2MRPO5U.BRFYM7TYVE\/16KIJVXZA6R7H\/1LD1K\/JYIYG7IZP2HA7NUYOVNT3CJG==&token=SGD7E9B29TQ.8HIITZ37XW3GLK5OGLZNLCDM=" stringByAddingPercentEncodingWithAllowedCharacters:set];
The standard URL Character sets don't escape the backslashes, I have tried them all:
URLUserAllowedCharacterSet
URLPasswordAllowedCharacterSet
URLHostAllowedCharacterSet
URLPathAllowedCharacterSet
URLQueryAllowedCharacterSet
URLFragmentAllowedCharacterSet
Please if someone could assist, I am rather new to development. Is it possible to create a custom allowed set which includes the backslash?
EDIT:
This is what the url should look like:
http://domain.com/interface/?end=imember&client_key=KOB3N6KX9JXF2MRPO5U.BRFYM7TYVE\/16KIJVXZA6R7H\/1LD1K\/JYIYG7IZP2HA7NUYOVNT3CJG==&token=SGD7E9B29TQ.8HIITZ37XW3GLK5OGLZNLCDM=
The exact solution for you answer is below.I got it from Zaph's answer.That is the better answer than other answer.
NSString *unescaped = #"http://domain.com/interface/?end=imember"];
NSString *escapedString = [unescaped stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLHostAllowedCharacterSet]];
NSLog(#"escapedString: %#", escapedString);
URL Encoding Character Sets are
URLFragmentAllowedCharacterSet "#%<>[\]^`{|}
URLHostAllowedCharacterSet "#%/<>?#\^`{|}
URLPasswordAllowedCharacterSet "#%/:<>?#[\]^`{|}
URLPathAllowedCharacterSet "#%;<>?[\]^`{|}
URLQueryAllowedCharacterSet "#%<>[\]^`{|}
URLUserAllowedCharacterSet "#%/:<>?#[\]^`

How to replace &ndash with Objective-C

I'm getting JSON back from an API, and when the article text returns, alot of times there will be a dash. But the dash comes thru as &ndash instead how the actual -...
How do I convert the &ndash to just the actual -?
Thanks for the help!
NSString *myString = #"Here is &ndash some text";
myString = [myString stringByReplacingOccurrencesOfString:#"&ndash" withString:#"-"];

How to Use An Escape URL String With Formatting in Objective-C

I need to gather data from a website based on the user's input.
searchString is the user inputted value, such as "search this string".
NSString *withoutSpaces = [searchString stringByReplacingOccurrencesOfString:#" " withString:#"%20"];
Here, I need to replace spaces with %20
Next, I need to put the new string without spaces (replaced with %20) into another string.
NSString *unescapedSearchString = [NSString stringWithFormat:
#"website.com/query?=%22%#%22", withoutSpaces];
The site I need is not really "website.com", but that's just an example. I also need the %22 to remain at the beginning and end.
As you can see, I need the %# to format the new withoutSpaces user input into the website URL.
I did a search and found examples but I could not find any with formatting such as in my case using %#.
What's the best way to "escape" the characters and keep my formatted string? Currently, when I try to access data from the website, it comes back as null. However, when I try a string without the %# formatting and an actual value, I successfully retrieve the data from a website.
Any help is greatly appreciated.
You should do things this way:
NSString *searchString = ... // the raw search string with spaces and all
NSString *quoted = [NSString stringWithFormat:#"\"%#\"", searchString];
NSString *escaped = [quoted stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
NSString *urlString = [NSString stringWithFormat:#"website.com?query=%#&value=all", escaped];
BTW - the URL seems a little off. There should be a variable name before the = and after the ?.

URL from string gives null

I have a string which gives the path, and another which appends the parameters to it. When i put them in a string and display, I'm getting in the correct format. If i try to put the entire string in NSURL, it displays NULL.
What is the format to get it?
NSString *booking=urlForBooking.bookHall;
NSLog(#" book %#",booking); // this prints --- http://10.2.0.76:8080/ConferenceHall/BookingHallServlet
NSString *bookingString=[booking stringByAppendingString:[NSString stringWithFormat:#"? employeeId=%#&conferenceHallId=%#&bookingId=%d&purpouse=%#&fromDate=%#&toDate=%#&comments=%#&submit=1",empId,_hallId,_bookingId,_purpose,fromDateStr,toDateStr,_comments]];
NSLog(#"book str %#",bookingString); //this prints --- ?employeeId=3306&conferenceHallId=112&bookingId=0&purpouse=S&fromDate=25/Feb/2013 13:29&toDate=25/Feb/2013 15:29&comments=C&submit=1
NSURL *bookingURL=[NSURL URLWithString:bookingString];
NSLog(#"BOOK %#",bookingURL); //here I'm not getting the url(combined string), it gives null.
That is because the URL your are building contains charters that are not valid in an URL, like spaces and slashes.
You should escape these characters:
NSString *bookingPath =[bookingString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
NSURL *bookingURL=[NSURL URLWithString:bookingPath];
You might need to replace the slashes in the date because they might not be encoded correctly.
NSString *bookingString=[NSString stringWithFormat:#"%#?employeeId=%#&conferenceHallId=%#&bookingId=%d&purpouse=%#&fromDate=%#&toDate=%#&comments=%#&submit=1",
booking,
empId,
_hallId,
_bookingId,
[_purpose stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding],
[fromDateStr stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding],
[toDateStr stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding],
[_comments stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
NSURL *bookingURL=[NSURL URLWithString:bookingString];
NSLog(#"BOOK %#",bookingURL);
Your URL string is incorrect in some way, and as such is getting parsed to nil. The documentation for NSURL tells you this can happen:
Return Value An NSURL object initialized with URLString. If the string
was malformed, returns nil.
You shouldn't have all those leading spaces after the ? portion of your URL, and the entire thing needs to be escaped prior to parsing it into a URL.
The spaces in _ bookingString_ (before employeeId and in the date) kill your URL.

stringByReplacingOccurrence does not replace string

I need to parse a FILE URL in my application, and replace the %20 for a SPACE. I am using stringByReplacingOccurance:
NSString *strippedContent = [finalFilePath stringByReplacingOccurrencesOfString:#"%20" withString:#" "];
But when I display strippedContent in an NSLog, all of the %20 strings are still there. Here is an example of the file name I hope to parse:
.../Documents/Inbox/Test%20Doc%20From%20Another%20App.txt
It seems as if NSFileManager cannot find the document when it has the %20 in it.
The file path is being passed from another application through the "Open In..." dialogue. Is there any way to remove the %20 with stringByReplacingOccurrence or when the URL is imported?
NSString provides a method that performs the conversion that you need:
NSString *strippedContent = [finalFilePath stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
Yes you should use:
NSString * strippedContent = [finalFilePath stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding];