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
|
#import "XADSplitFileParser.h"
#import "XADRegex.h"
@implementation XADSplitFileParser
+(int)requiredHeaderSize { return 0; }
+(BOOL)recognizeFileWithHandle:(CSHandle *)handle firstBytes:(NSData *)data name:(NSString *)name
{
if(!name) return NO;
// Check if filename is of the form .001
NSArray *matches=[name substringsCapturedByPattern:@"^(.*)\\.([0-9]{3})$" options:REG_ICASE];
if(!matches) return NO;
// Find another filename in the series. Pick .001 if the given file is not already that,
// and .002 otherwise.
NSString *otherext;
if([[matches objectAtIndex:2] isEqual:@"001"]) otherext=@"002";
else otherext=@"001";
// Check if this other file exists, too.
NSString *othername=[NSString stringWithFormat:@"%@.%@",[matches objectAtIndex:1],otherext];
return [[NSFileManager defaultManager] fileExistsAtPath:othername];
}
+(NSArray *)volumesForHandle:(CSHandle *)handle firstBytes:(NSData *)data name:(NSString *)name
{
NSArray *matches=[name substringsCapturedByPattern:@"^(.*)\\.[0-9]{3}$" options:REG_ICASE];
if(matches)
{
return [self scanForVolumesWithFilename:name
regex:[XADRegex regexWithPattern:[NSString stringWithFormat:@"^%@\\.[0-9]{3}$",
[[matches objectAtIndex:1] escapedPattern]] options:REG_ICASE]
firstFileExtension:nil];
}
return nil;
}
-(void)parse
{
NSString *basename=[[self name] stringByDeletingPathExtension];
CSHandle *handle=[self handle];
NSMutableDictionary *dict=[NSMutableDictionary dictionaryWithObjectsAndKeys:
[self XADPathWithUnseparatedString:basename],XADFileNameKey,
[NSNumber numberWithLongLong:[handle fileSize]],XADFileSizeKey,
[NSNumber numberWithLongLong:[handle fileSize]],XADCompressedSizeKey,
nil];
NSString *ext=[basename pathExtension];
if([ext caseInsensitiveCompare:@"zip"]==0)
[dict setObject:[NSNumber numberWithBool:YES] forKey:XADIsArchiveKey];
[self addEntryWithDictionary:dict];
}
-(CSHandle *)handleForEntryWithDictionary:(NSDictionary *)dict wantChecksum:(BOOL)checksum
{
CSHandle *handle=[self handle];
[handle seekToFileOffset:0];
return handle;
}
-(NSString *)formatName { return @"Split file"; }
@end
|
