Attempt at exercise 5

[esc]

#import <Foundation/Foundation.h>


@interface NSString (TempFiles)
- (NSString *) temporaryFileName: (NSString *) tf;
@end

@implementation NSString (TempFiles)
- (NSString *) temporaryFileName: (NSString *) tmpfile
{
   NSProcessInfo *proc = [NSProcessInfo processInfo];
   NSString *uniquestr = [proc globallyUniqueString];
   
   return [tmpfile stringByAppendingPathComponent:uniquestr];
}
@end

int main (int argc, const char * argv[]) {
    NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
   
   char *template = malloc(sizeof(char) * 128);
   strcpy(template, "/tmp/temp.XXXXXXXX");
   
   NSString *tmpfilename = NSTemporaryDirectory();

    printf("Unique file name by Foundation methods =\n");
   printf("%s\n", [[tmpfilename temporaryFileName:tmpfilename] UTF8String]);
   
   mkstemp(template);
   printf("Unique file name by mkstemp = %s\n", template);
   
    [pool drain];
    return 0;
}

Sample output:

Unique file name by Foundation methods =
/var/folders/HB/HBtCxZ2SEbuSnIsdX70KCU+++TM/-Tmp-/0395F071-1DDD-4AAF-B591-F1F18C24A1D6-19934-0000E5893FD9445B
Unique file name by mkstemp = /tmp/temp.aiNyOFRN

[mdeh]

Wendy...we are working on the same program!
But..you are doing it in C...which is great...but not sure if malloc, strcpy are necessarily the methods that non-C are familiar with and within scope of the exercise....
Having said that...I cannot get mine to work.....          ..so maybe some help?
Found the error.....don't even ask!!!!


TempFiles.h

Code: (Objective-C)

#import <Foundation/Foundation.h>


@interface NSString(TempFiles)

+(NSString *) temporaryFileName;

@end

TempFiles.m

Code: (Objective-C)

#import "TempFiles.h"


@implementation NSString (TempFiles)


+(NSString *) temporaryFileName
{
	NSString * tempDir = NSTemporaryDirectory();
	NSString * uniqueFileName = [[NSProcessInfo processInfo]globallyUniqueString];
	return [tempDir stringByAppendingPathComponent: uniqueFileName];
}

@end

main.m

Code: (Objective-C)

#import "TempFiles.h"
#define	 NUM_OF_STRINGS  10

int main (int argc, const char * argv[]) {
    NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
	NSMutableArray *myStrings = [[NSMutableArray alloc]init];
	NSFileManager			*fm = [ NSFileManager defaultManager];
	BOOL						done = NO;
	
	
	
	int x;
	
	
	for ( x = 0; x < NUM_OF_STRINGS; x ++)
	{
		[myStrings addObject:[NSString temporaryFileName]];
		
		
		/* create a file at that location */
		
		done = [fm createFileAtPath:[myStrings lastObject] contents:nil attributes:nil];
		
		if ( !done)
		{
			NSLog(@"Could not create file");
			return 1;
		}
		
		
	}
	
	/* show unique names */
	
	for ( id unique_show in myStrings)
		NSLog(@"%@", unique_show);
	
	/*now delete those from temporary folder*/
	
	for ( id unique_delete in myStrings)
	{
		
		done =	[fm removeFileAtPath: unique_delete handler: nil];
	if (!done)
		NSLog(@"Did not delete file: %@", unique_delete);
	else
		NSLog(@"Deleted: %@", unique_delete);
		
		}
    [pool drain];
    return 0;
}

[esc]

But..you are doing it in C...which is great...but not sure if malloc, strcpy are necessarily the methods that non-C are familiar with and within scope of the exercise....

oops, my use of malloc and strcpy was quick and dirty for calling mkstemp()...I'll go back to do it within Objective-C.  Thanks for pointing this out!