[3R1C]

I need to point an NSTask at a file that always begins with 'logfile_' but the exact ending changes. Like these examples:

logfile_02.txt
logfile_03.txt
logfile_04.txt
etc…

There is always one and only one of these files in the parent directory at any given time. So in pseudo code, I want to tell my NSTask, 'Hey NSTask! The path to the file you need, is the only file in the directory that contains the string @"logfile_". I dont care what the ending is." What would be the easiest way to accomplish this?

[tobli]

What about "logfile_*", just as you would do it at the command line? Make sure you first set the correct directory path by using setCurrentDirectoryPath:.

/Tobias

[3R1C]

That doesn't appear to work here. Perhaps if I give more detail about what exactly Im doing, a solution will be more clear. Inside a known directory, exists a file that has the string "logfile_" in it. Inside this file, there is one line that contains the word "Completed in it. I need to get this line from this text file. What I was doing previously was using NSTask to do a grep with the word to search for and the file path to logfile_01.txt as arguments. this worked fine until I realized that the file name changed after a time. Here is my present code that only works until the file name changes.

-(void)grepForProgBarStart
{
NSTask *initializeProgressBar=[[NSTask alloc] init];
NSPipe *pipe=[[NSPipe alloc] init];
NSFileHandle *handle;
NSString *FAHOneLog = @"/Users/xaos01/Library/Application\ Support/Origami/FAH1/work/logfile_01.txt:";
NSString *string;

[initializeProgressBar setLaunchPath:@"/usr/bin/grep"];
[initializeProgressBar setArguments:[NSArray arrayWithObjects:@"Completed", FAHOneLog, nil]];
[initializeProgressBar setStandardOutputipe];
handle=[pipe fileHandleForReading];
[initializeProgressBar launch];
string=[[NSString alloc] initWithData:[handle readDataToEndOfFile] encoding:NSASCIIStringEncoding];
string = [[string componentsSeparatedByString:@": "] objectAtIndex:1];
string = [[string componentsSeparatedByString:@","] objectAtIndex:0];
[progressBar setDoubleValue:[string intValue]];
[pipe release];
[initializeProgressBar release];
}

Would it help if I wasnt using grep to do this?

Other ways to determine the right file:

Its always the second file in the directory when the directory is sorted alphabeticaly.
Its always the only file that ends in ".txt"

could i some how make an array of strings that contain the name of each file in the known directory and then use objectAtIndex to give me the string at object 1? I believe the answer lies in making an array of the file names and doing something with it but Im not sure.

[3R1C]

OK. I have a solution, but I'd like your opinions on its efficiency. This method is called evry 5 seconds:

-(void)grepForProgBarStart
{
NSString *logfile = [NSString alloc];
NSString *string;
NSString *file;

NSDirectoryEnumerator *enumerator = [[NSFileManager defaultManager] enumeratorAtPath:FAHOneLog];
if ([cartman getPID:@"FAH2Console-v219-OSX.bin"] != 0) {
while (file = [enumerator nextObject]) {
if ([[file pathExtension] isEqualToString:@"txt"]) {
logfile = [logfile initWithContentsOfFile:[FAHOneLog stringByAppendingString:file]];
string = [[logfile componentsSeparatedByString:@"- Frames Completed: "] objectAtIndex:1];
string = [[string componentsSeparatedByString:@","] objectAtIndex:0];
[progressBar setDoubleValue:[string intValue]];
}
}
}
[logfile release];
}

Do any of you see a way to make this better? Is this method better than using grep to get the line?