Looking at this code and offer some suggestions/criticism.
Note that GC is not yet covered. It's an answer to exercise 16.1 as follows.
Assumes that the files and directory reside in the current working directory.
Thanks in advance.
Note that GC is not yet covered. It's an answer to exercise 16.1 as follows.
Assumes that the files and directory reside in the current working directory.
Thanks in advance.
Code:
#import <Foundation/NSObject.h>
#import <Foundation/NSFileManager.h>
#import <Foundation/NSString.h>
#import <Foundation/NSProcessInfo.h>
#import <Foundation/NSEnumerator.h>
#import <Foundation/NSAutoreleasePool.h>
#define ONEARGUMENT 1
int main (int argc, const char * argv[]) {
NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
NSFileManager *fm = [NSFileManager defaultManager];
NSProcessInfo *proc = [NSProcessInfo processInfo];
NSArray *args = [proc arguments];
BOOL isDirectory = NO, exists = NO;
NSString *working_directory, *destDir, *srcfile, *destfile;
NSInteger argCount;
NSLog(@"Current directory: %@", [fm currentDirectoryPath]);
/* check for correct usage */
if ( [[proc arguments] count] == ONEARGUMENT )
{
NSLog(@"Usage: file1, file2..., prog");
return 1;
}
/*check last argument is a directory */
working_directory = [ fm currentDirectoryPath];
destDir = [working_directory stringByAppendingPathComponent: [[proc arguments]lastObject ]];
exists = [ fm fileExistsAtPath: destDir isDirectory: &isDirectory];
if (!exists )
{
NSLog(@"Usage: Directory does not exist");
return 2;
}
if ( !isDirectory )
{
NSLog(@"Usage: Last file must be a Directory");
return 3;
}
/* iterate through[proc arguments] */
argCount = args.count;
int fileCount = 1;
while (--argCount > 1)
{
srcfile = [args objectAtIndex: fileCount++];
/*is source file readable */
if ( [ fm isReadableFileAtPath: srcfile] == NO)
{
NSLog(@"Error: Source file %@ is unreadable", srcfile);
return 4;
}
/*create destination path */
destfile = [ destDir stringByAppendingPathComponent: srcfile];
/* remove file if exists at destination */
[fm removeItemAtPath:destfile error:nil];
if ([fm copyPath:srcfile toPath:destfile handler:nil] == NO)
{
NSLog(@"Error: copy failed" );
return 5;
}
NSLog(@"Copy of %@ to %@ succeeded", srcfile, destfile);
NSLog(@"Contents of source:%@", [NSString stringWithContentsOfFile:srcfile encoding:NSUTF8StringEncoding error:nil]);
NSLog(@"Contents of destination:%@",[NSString stringWithContentsOfFile:destfile encoding:NSUTF8StringEncoding error:nil]);
}
[pool drain];
return 0;
}
