my iPad app has a small download facility, for which I want to append the data using an NSFileHandle. The problem is the creation call only returns null file handles. What could be the problem? Her...

I am reading data from a NSFileHandle (from a NSPipe) using a readabilityHandler block: fileHandle.readabilityHandler = ^( NSFileHandle *handle ) { [self processData: [handle availableData]]; } ...

I have a text file having data as given e.g. PUFGUjVRallYZDNaazFtVjVObU1zWm5ZcUJUYU5ORk4zbGthNHNDVUdSMlFVQmpSVEoxUUNSallYaFhkanBITXBGR1NTQnpZRTltZE1OalVzSkdXQ0Z6WXR0V2RpTmpTdXgwTWs5V1lZSkZiWjFXT...

I have a Swift program that reads from FileHandle.standardInput (in Objective-C, this would be +[NSFileHandle fileHandleWithStandardInput]. It should terminate reading when it hits end-of-file on t...

I used NSFileHandle to writedata to a file. NSFilehandle *handle = [NSFileHandle fileHandleForWritingAtPath:@"path/of/file"]; @try { [handle writedata:data]; } @catch (NSException *e) { // when...

I'm trying to use a Pipe's fileHandleForReading's readabilityHandler to read both the standardOutput and standardError of a Process. However, the moment the terminationHandler is called is actually...

I want to store pictures taken from camera and video recordings from my application in a separate folder in temporary directories for a while. And as the task is being completed, they shall be goin...

First of all, I am new to iOS and Swift and come from a background of Android/Java programming. So to me the idea of catching an exception from an attempt to write to a file is second nature, in ca...

Using an NSFileHandle, it is pretty easy to remove n number of characters from the end of the file using truncateFileAtOffset. -(void)removeCharacters:(int)numberOfCharacters fromEndOfFile:(NSFile...

My application navigation based. UItextView for notes UIViewController. I am writing data for text to file. Now i need to write in append mode , the below code i am trying but every time is writing...

I'm trying to find a file size. NSFileHandle *output = [NSFileHandle fileHandleForWritingAtPath:self.finalPath]; //seek to begin of the file [output seekToFileOffset:0]; NSData *mydata = [output...

This could be rather broad problem but I could not find any online resource addressing or explaining this matter. The question is after creating NSFileHandle *writer = [NSFileHandle fileHandleForW...

I'm attempting to read data from the Standard Error of a NSTask in Cocoa using waitForDataInBackgroundAndNotify. The following code does read the stream, so it's already working partially. The pr...

I'm having a problem with EPIPE in my iOS app, and it's not being caught in the @try/@catch/@finally block. How can I catch this signal (SIGPIPE, likely)... I've built a "web proxy" into my app t...

First of all, when debugging and running in Xcode everything works as expected. But when I try to "share" my app, i.e. make a release build, my NSTask won't output any standardOutput while standar...

Starting from OS X 10.7 and iOS 5.0 NSFileHandle has two new properties: readabilityHandler and writeabilityHandler. I tried to use writeabilityHandler, but no luck. The documentation is weird, it ...

I am currently trying to wrap my head around the hole NSTask, NSPipe, NSFileHandle business. So I thought I write a little tool, which can compile and run C code. I also wanted to be able to redire...

I want to read the contents of an assets library file in iOS NSFileHandle fileHandleForReadingFromUrl using the asset defaultRepresentation url seems to always return 0x0... I'll keep looking for...

I am trying to make a customized input stream based off of the one by Dave DeLong here that also allows for reading data from a server via NSURL. So far, I have this approach, which works fine for ...

Update 4 Per Greg's suggestion I've created one pair of image/text that shows the output from a 37k image to base64 encoded, using 100k chunks. Since the file is only 37k it's safe to say the loop ...