1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
|
#import "XADException.h"
#import "CSFileHandle.h"
#import "CSZlibHandle.h"
#import "CSBzip2Handle.h"
NSString *XADExceptionName=@"XADException";
@implementation XADException
+(void)raiseUnknownException { [self raiseExceptionWithXADError:XADUnknownError]; }
+(void)raiseInputException { [self raiseExceptionWithXADError:XADInputError]; }
+(void)raiseOutputException { [self raiseExceptionWithXADError:XADOutputError]; }
+(void)raiseIllegalDataException { [self raiseExceptionWithXADError:XADIllegalDataError]; }
+(void)raiseNotSupportedException { [self raiseExceptionWithXADError:XADNotSupportedError]; }
+(void)raisePasswordException { [self raiseExceptionWithXADError:XADPasswordError]; }
+(void)raiseDecrunchException { [self raiseExceptionWithXADError:XADDecrunchError]; }
+(void)raiseChecksumException { [self raiseExceptionWithXADError:XADChecksumError]; }
+(void)raiseDataFormatException { [self raiseExceptionWithXADError:XADDataFormatError]; }
+(void)raiseOutOfMemoryException { [self raiseExceptionWithXADError:XADOutOfMemoryError]; }
+(void)raiseExceptionWithXADError:(XADError)errnum
{
// [NSException raise:@"XADException" format:@"%@",[self describeXADError:errnum]];
[[[[NSException alloc] initWithName:XADExceptionName reason:[self describeXADError:errnum]
userInfo:[NSDictionary dictionaryWithObject:[NSNumber numberWithInt:errnum]
forKey:@"XADError"]] autorelease] raise];
}
+(XADError)parseException:(id)exception
{
if([exception isKindOfClass:[NSException class]])
{
NSException *e=exception;
NSString *name=[e name];
if([name isEqual:XADExceptionName])
{
return [[[e userInfo] objectForKey:@"XADError"] intValue];
}
else if([name isEqual:CSCannotOpenFileException]) return XADOpenFileError;
else if([name isEqual:CSFileErrorException]) return XADUnknownError; // TODO: use ErrNo in userInfo to figure out better error
else if([name isEqual:CSOutOfMemoryException]) return XADOutOfMemoryError;
else if([name isEqual:CSEndOfFileException]) return XADInputError;
else if([name isEqual:CSNotImplementedException]) return XADNotSupportedError;
else if([name isEqual:CSNotSupportedException]) return XADNotSupportedError;
else if([name isEqual:CSZlibException]) return XADDecrunchError;
else if([name isEqual:CSBzip2Exception]) return XADDecrunchError;
}
return XADUnknownError;
}
+(NSString *)describeXADError:(XADError)error
{
switch(error)
{
case XADNoError: return nil;
case XADUnknownError: return @"Unknown error";
case XADInputError: return @"Attempted to read more data than was available";
case XADOutputError: return @"Failed to write to file";
case XADBadParametersError: return @"Function called with illegal parameters";
case XADOutOfMemoryError: return @"Not enough memory available";
case XADIllegalDataError: return @"Data is corrupted";
case XADNotSupportedError: return @"File is not fully supported";
case XADResourceError: return @"Required resource missing";
case XADDecrunchError: return @"Error on decrunching";
case XADFiletypeError: return @"Unknown file type";
case XADOpenFileError: return @"Opening file failed";
case XADSkipError: return @"File, disk has been skipped";
case XADBreakError: return @"User cancelled extraction";
case XADFileExistsError: return @"File already exists";
case XADPasswordError: return @"Missing or wrong password";
case XADMakeDirectoryError: return @"Could not create directory";
case XADChecksumError: return @"Wrong checksum";
case XADVerifyError: return @"Verify failed (disk hook)";
case XADGeometryError: return @"Wrong drive geometry";
case XADDataFormatError: return @"Unknown data format";
case XADEmptyError: return @"Source contains no files";
case XADFileSystemError: return @"Unknown filesystem";
case XADFileDirectoryError: return @"Name of file exists as directory";
case XADShortBufferError: return @"Buffer was too short";
case XADEncodingError: return @"Text encoding was defective";
case XADLinkError: return @"Could not create symlink";
default: return [NSString stringWithFormat:@"Error %d",error];
}
}
@end
|