Multiple strings in one NSString - iphone

i am getting multiple string from HTMl to one NSString, every time the string is replaced by a new string. i tried NSArray it says NSString is strong for array. i want all the strings store in NSString one by one. how can i do that ?
TFHpple *tutorialsParser = [TFHpple hppleWithHTMLData:nsData];
NSString *tutorialsXpathQueryString = #"//div[#id='NewsPageArticle']/p/span ";
// NSString *tutorialsXpathQueryString = #"//div[#class='entry']/ul/li/a";
NSArray *tutorialsNodes = [tutorialsParser searchWithXPathQuery:tutorialsXpathQueryString];
// 4
NSMutableArray *newTutorials = [[NSMutableArray alloc] initWithCapacity:0];
for (TFHppleElement *element in tutorialsNodes) {
// 5
Tutorial *tutorial = [[Tutorial alloc] init];
[newTutorials addObject:tutorial];
// 6
tutorial.title = [[element firstChild] content];


You should use NSMutableString for appending string
NSMutableString aString = [[NSMutableString alloc]initWithString:yourHTMLString];
[aString appendString:parsedHTMLString];

Related

Convert String into special - splitting an NSString

I have a string like: "mocktail, wine, beer"
How can I convert this into: "mocktail", "wine", "beer"?

the following gives you the desired result:
NSString *_inputString = #"\"mocktail, wine, beer\"";
NSLog(#"input string : %#", _inputString);
NSLog(#"output string : %#", [_inputString stringByReplacingOccurrencesOfString:#", " withString:#"\", \""]);
the result is:
input string : "mocktail, wine, beer"
output string : "mocktail", "wine", "beer"

You need to use:
NSArray * components = [myString componentsSeparatedByString: #", "];

NSString *string = #"mocktail, wine, beer";
//remove whitespaces
NSString *trimmedString = [string stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];
//get array of string
NSArray *array = [trimmedString componentsSeparatedByString:#","];
NSMutableArray *newArray = [[NSMutableArray alloc] init];
for (NSString *trimmedString in array) {
NSString *newString = [NSMutableString stringWithFormat:#"'%#'", trimmedString];
[newArray addObject:newString];
}
//merge new strings
NSString *finalString = [NSString stringWithFormat:#"%#", [newArray objectAtIndex:0]];
for (NSInteger i = 1; i < [newArray count]; i++) {
finalString = [NSString stringWithFormat:#"%#, %#", finalString, [newArray objectAtIndex:i]];
}

Without knowing spesifically about iOS or objective-c, I assume you could use a split function.
In almost any higher level programming language there is such a function.
Try:
Objective-C split
This gets you an array of Strings. You can then practically do with those what you want to do, e.g. surrounding them with single quotes and appending them back together. :D

Retrieve the substring of a strings which are in array

I am new to iphone.I have an array which contains the objects like below
"04_Num/04Num001.mp3",
"04_Num/04Num002.mp3",
"04_Num/04Num003.mp3",
"04_Num/04Num004.mp3",
"04_Num/04Num005.mp3",
"04_Num/04Num006.mp3",
"04_Num/04Num007.mp3",
"04_Num/04Num008.mp3",
"04_Num/04Num009.mp3",
"04_Num/04Num010.mp3",
"04_Num/04Num011.mp3",
"04_Num/04Num012.mp3",
"04_Num/04Num013.mp3",
"04_Num/04Num014.mp3",
"04_Num/04Num015.mp3",
"04_Num/04Num016.mp3",
"04_Num/04Num017.mp3",
"04_Num/04Num018.mp3",
"04_Num/04Num019.mp3",
"04_Num/04Num020.mp3",
"04_Num/04Num021.mp3",
"04_Num/04Num022.mp3",
"04_Num/04Num023.mp3",
"04_Num/04Num024.mp3",
"04_Num/04Num025.mp3",
"04_Num/04Num026.mp3",
"04_Num/04Num027.mp3",
"04_Num/04Num028.mp3",
"04_Num/04Num029.mp3",
"04_Num/04Num030.mp3",
"04_Num/04Num031.mp3",
"04_Num/04Num032.mp3",
"04_Num/04Num033.mp3",
"04_Num/04Num034.mp3",
"04_Num/04Num035.mp3",
"04_Num/04Num036.mp3"
but here i want retrieve the strings(objects)only after the / (i.e) for example 04_Num/04Num033.mp3 in this i want only the string 04Num033.mp3.Like this for all the above and then i have to place in an array
how it is possible if any body know this please help me...

lastPathComponent is what you need. You could do it like so:
NSMutableArray *files = [[NSMutableArray alloc] initWithCapacity:0];
for (NSString *file in songs) //Where songs is the array with the paths you have provided
{
[files addObject:[file lastPathComponent]];
}

You can separate the string into two parts using NSString's
componentsSeparatedByString:
method, and use the last string component
// Let's call your array of strings as stringsArray
NSMutableArray *prefixStrings = [[NSMutableArray alloc] init];
for (NSString *str in stringsArray) {
NSArray *stringComponents = [str componentsSeparatedByString:#"/"];
if ([stringComponents count]) {
[prefixStrings addObject:[stringComponents objectAtIndex:1]];
} }

parsing array elements in iPhone

NSBundle *bundle = [NSBundle mainBundle];
NSString *pthpath = [bundle pathForResource:#"path" ofType:#"txt"];
NSString *content = [NSString stringWithContentsOfFile:pthpath encoding:NSUTF8StringEncoding error:nil];
array=[[NSArray alloc ]init];
array = [content componentsSeparatedByString:#"~"];
=====================================================================
here content is:
87,348~51,347~135,132~182,133~268,346~236,347~159,168~87,347#118,298~115,297~200,298~189,266~128,265~117,299#222,352~268,353~264,340~219,342~225,355#186,262~199,299~212,297~195,257~188,260
and array is:
"87,348",
"51,347",
"135,132",
"182,133",
"268,346",
"236,347",
"159,168",
"87,347#118,298",
"115,297",
"200,298",
"189,266",
"128,265",
"117,299#222,352",
"268,353",
"264,340",
"219,342",
"225,355#186,262",
"199,299",
"212,297",
"195,257",
"188,260"
But I want to again create an array by parsing with #. Please help me out...........

for (NSString *string in array) {
NSArray *subArray = [string componentsSeparatedByString:#"#"];
for (NSString *substring in subArray)
etc. etc.
(Next time try to have your question better formatted and articulated please.)

Instead of using componentsSeparatedByString:, use componentsSeparatedByCharactersInSet: and create a character set with the separators you want.
Also, you are creating an array there (array = [[NSArray alloc] init]) and when you do array = [content componentsSeparatedByString:#"#"] you are leaking the just allocated array. In general, seems like you should read more about how objects and references work.

I think from following code you may get some idea, if I understood your question correctly,
NSMutableArray *resultArray = [[NSMutableArray alloc] initWithCapacity:1];
NSArray *tempArray1 = nil;
NSArray *tempArray2 = nil;
NSString *content = #"87,348~51,347~135,132~182,133~268,346~236,347~159,168~87,347#118,298~115,297~200,298~189,266~128,265~117,299#222,352~268,353~264,340~219,342~225,355#186,262~199,299~212,297~195,257~188,260";
tempArray1 = [content componentsSeparatedByString:#"#"];
for(NSString *string in tempArray1)
{
tempArray2 = [string componentsSeparatedByString:#"~"];
[resultArray addObjectsFromArray:tempArray2];
}
NSLog(#"ResultArray :%#", resultArray);

obj-c problem setting array with componentsSeperatedByString

I have a data source with about 2000 lines that look like the following:
6712,Anaktuvuk Pass Airport,Anaktuvuk Pass,United States,AKP,PAKP,68.1336,-151.743,2103,-9,A
What I am interested in is the 6th section of this string so I want to turn it into an array, then i want to check the 6th section [5] for an occurrance of that string "PAKP"
Code:
NSBundle *bundle = [NSBundle mainBundle];
NSString *airportsPath = [bundle pathForResource:#"airports" ofType:#"dat"];
NSData *data = [NSData dataWithContentsOfFile:airportsPath];
NSString *dataString = [[[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding] autorelease];
NSArray *dataArray = [dataString componentsSeparatedByString:#"\n"];
NSRange locationOfAirport;
NSString *workingString = [[NSString alloc]initWithFormat:#""];
NSString *searchedAirport = [[NSString alloc]initWithFormat:#""];
NSString *airportData = [[NSString alloc]initWithFormat:#""];
int d;
for (d=0; d < [dataArray count]; d=d+1) {
workingString = [dataArray objectAtIndex:d];
testTextBox = workingString; //works correctly
NSArray *workingArray = [workingString componentsSeparatedByString:#","];
testTextBox2 = [workingArray objectAtIndex: 0]; //correctly displays the first section "6712"
testTextBox3 = [workingArray objectAtIndex:1] //throws exception index beyond bounds
locationOfAirport = [[workingArray objectAtIndex:5] rangeOfString:#"PAKP"];
}
the problem is that when the workingArray populates, it only populates with a single object (the first component of the string which is "6712". If i have it display the workingString, it correctly displays the entire string, but for some reason, it isn't correctly making the array using the commas.
i tried it without using the data file and it worked fine, so the problem comes from how I am importing the data.
ideas?

You code works. You should run it with the debugger to see what's happening. At a guess, your input data isn't what you think it is - possibly a different encoding, or different line endings.
See sample:
NSString *dataString = #"6712,Anaktuvuk Pass Airport,Anaktuvuk Pass,United States,AKP,PAKP,68.1336,-151.743,2103,-9,A";
NSArray *dataArray = [dataString componentsSeparatedByString:#"\n"];
for (NSString *workingString in dataArray) {
NSString *testTextBox = workingString; //works correctly
NSArray *workingArray = [workingString componentsSeparatedByString:#","];
NSString *testTextBox2 = [workingArray objectAtIndex: 0]; //correctly displays the first section "6712"
NSString *testTextBox3 = [workingArray objectAtIndex:1]; //throws exception index beyond bounds
NSRange locationOfAirport = [[workingArray objectAtIndex:5] rangeOfString:#"PAKP"];
}

there was a problem in the data where there were a few "\"s that caused the errors.

iPhone parsing url for GET params

I have an string which is got from parsing an xml site.
http://www.arijasoft.com/givemesomthing.php?a=3434&b=435edsf&c=500
I want to have an NSString function that will be able to parse the value of c.
Is there a default function or do i have to write it manually.

You could use Regular expression via RegExKit Lite:
http://regexkit.sourceforge.net/RegexKitLite/
Or you could separate the string into components (which is less nice):
NSString *url=#"http://www.arijasoft.com/givemesomthing.php?a=3434&b=435edsf&c=500";
NSArray *comp1 = [url componentsSeparatedByString:#"?"];
NSString *query = [comp1 lastObject];
NSArray *queryElements = [query componentsSeparatedByString:#"&"];
for (NSString *element in queryElements) {
NSArray *keyVal = [element componentsSeparatedByString:#"="];
if (keyVal.count > 0) {
NSString *variableKey = [keyVal objectAtIndex:0];
NSString *value = (keyVal.count == 2) ? [keyVal lastObject] : nil;
}
}

I made a class that does this parsing for you using an NSScanner, as an answer to the same question a few days ago. You might find it useful.
You can easily use it like:
URLParser *parser = [[[URLParser alloc] initWithURLString:#"http://www.arijasoft.com/givemesomthing.php?a=3434&b=435edsf&c=500"] autorelease];
NSString *c = [parser valueForVariable:#"c"]; //c=500

Try the following:
NSURL *url = [NSURL URLWithString:#"http://www.arijasoft.com/givemesomthing.php?a=3434&b=435edsf&c=500"];
NSMutableString *parameterString = [NSMutableString stringWithFormat:#"{%#;}",[url parameterString]];
[parameterString replaceOccurrencesOfString:#"&" withString:#";"];
// Convert string into Dictionary
NSPropertyListFormat format;
NSString *error;
NSDictionary *paramDict = [NSPropertyListSerialization propertyListFromData:[parameterString dataUsingEncoding:NSUTF8StringEncoding] mutabilityOption: NSPropertyListImmutable format:&format errorDescription:&error];
// Now take the parameter you want
NSString *value = [paramDict valueForKey:#"c"];

Here is the native iOS approach using NSURLComponents and NSURLQueryItem classes:
NSString *theURLString = #"http://www.arijasoft.com/givemesomthing.php?a=3434&b=435edsf&c=500";
NSArray<NSURLQueryItem *> *theQueryItemsArray = [NSURLComponents componentsWithString:theURLString].queryItems;
for (NSURLQueryItem *theQueryItem in theQueryItemsArray)
{
NSLog(#"%# %#", theQueryItem.name, theQueryItem.value);
}