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   1 //
   2 //  PithosLocalObjectState.m
   3 //  pithos-macos
   4 //
   5 // Copyright 2011 GRNET S.A. All rights reserved.
   6 //
   7 // Redistribution and use in source and binary forms, with or
   8 // without modification, are permitted provided that the following
   9 // conditions are met:
  10 //
  11 //   1. Redistributions of source code must retain the above
  12 //      copyright notice, this list of conditions and the following
  13 //      disclaimer.
  14 //
  15 //   2. Redistributions in binary form must reproduce the above
  16 //      copyright notice, this list of conditions and the following
  17 //      disclaimer in the documentation and/or other materials
  18 //      provided with the distribution.
  19 //
  20 // THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
  21 // OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  22 // WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  23 // PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
  24 // CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  25 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  26 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
  27 // USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  28 // AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29 // LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  30 // ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  31 // POSSIBILITY OF SUCH DAMAGE.
  32 //
  33 // The views and conclusions contained in the software and
  34 // documentation are those of the authors and should not be
  35 // interpreted as representing official policies, either expressed
  36 // or implied, of GRNET S.A.
  37
  38 #import "PithosLocalObjectState.h"
  39 #import "PithosUtilities.h"
  40 #import "HashMapHash.h"
  41
  42 @implementation PithosLocalObjectState
  43 @synthesize filePath, isDirectory, exists, hash, tmpFilePath;
  44
  45 #pragma mark -
  46 #pragma mark Object Lifecycle
  47
  48 - (id)initWithFile:(NSString *)aFilePath blockHash:(NSString *)blockHash blockSize:(NSUInteger)blockSize {
  49     if ((self = [self init])) {
  50         self.filePath = aFilePath;
  51         if ([[NSFileManager defaultManager] fileExistsAtPath:filePath isDirectory:&isDirectory] && !isDirectory) {
  52             self.hash = [HashMapHash calculateHashMapHash:[HashMapHash calculateObjectHashMap:aFilePath
  53                                                                                 withBlockHash:blockHash
  54                                                                                  andBlockSize:blockSize]];
  55         }
  56     }
  57     return self;
  58 }
  59
  60 - (id)initWithHash:(NSString *)aHash directory:(BOOL)anIsDirectory {
  61     if ((self = [self init])) {
  62         if (anIsDirectory)
  63             isDirectory = YES;
  64         else if ([aHash length] == 64)
  65             self.hash = aHash;
  66     }
  67     return self;
  68 }
  69
  70 + (id)localObjectState {
  71     return [[[self alloc] init] autorelease];
  72 }
  73
  74 + (id)localObjectStateWithFile:(NSString *)aFilePath blockHash:(NSString *)blockHash blockSize:(NSUInteger)blockSize {
  75     return [[[self alloc] initWithFile:aFilePath blockHash:blockHash blockSize:blockSize] autorelease];
  76 }
  77
  78 + (id)localObjectStateWithHash:(NSString *)aHash directory:(BOOL)anIsDirectory {
  79     return [[[self alloc] initWithHash:aHash directory:anIsDirectory] autorelease];
  80 }
  81
  82 - (void)dealloc {
  83     self.tmpFilePath = nil;
  84     [filePath release];
  85     [hash release];
  86     [super dealloc];
  87 }
  88
  89 - (NSString *)description {
  90     return [NSString stringWithFormat:@"hash: %@, filePath: %@, isDirectory: %d",
  91             hash, filePath, isDirectory];
  92 }
  93
  94 - (BOOL)isEqualToState:(PithosLocalObjectState *)aState {
  95     if (self.isDirectory)
  96         // Object is a directory, check the other
  97         return aState.isDirectory;
  98     else if (aState.isDirectory)
  99         // Object is not a directory, while the other is
 100         return NO;
 101     else if (!self.exists)
 102         // Object doesn't exist, check the other
 103         return (!aState.exists);
 104     else if (!aState.exists)
 105         // Object exists, while the other doesn't
 106         return NO;
 107     else
 108         // Both objects exist, check that they have the same hash
 109         return [self.hash isEqualToString:aState.hash];
 110 }
 111
 112 #pragma mark -
 113 #pragma mark Properties
 114
 115 - (void)setIsDirectory:(BOOL)anIsDirectory {
 116     isDirectory = anIsDirectory;
 117     if (isDirectory) {
 118         self.hash = nil;
 119         self.tmpFilePath = nil;
 120     }
 121 }
 122
 123 - (void)setTmpFilePath:(NSString *)aTmpFilePath {
 124     if (![tmpFilePath isEqualToString:aTmpFilePath]) {
 125         if (!aTmpFilePath) {
 126             NSFileManager *fileManager = [NSFileManager defaultManager];
 127             if ([fileManager fileExistsAtPath:tmpFilePath]) {
 128                 NSError *error = nil;
 129                 if (![fileManager removeItemAtPath:tmpFilePath error:&error] || error)
 130                     [PithosUtilities fileActionFailedAlertWithTitle:@"Remove File Error"
 131                                                             message:[NSString stringWithFormat:@"Cannot remove file at '%@'", tmpFilePath]
 132                                                               error:error];
 133             }
 134         }
 135         [tmpFilePath release];
 136         tmpFilePath = [aTmpFilePath retain];
 137     }
 138 }
 139
 140 - (BOOL)exists {
 141     return (isDirectory || hash);
 142 }
 143
 144 - (void)setHash:(NSString *)aHash {
 145     [hash release];
 146     if ([aHash length] == 64)
 147         hash = [aHash retain];
 148     else
 149         hash = nil;
 150 }
 151
 152 #pragma mark -
 153 #pragma mark NSCoding
 154
 155 - (id)initWithCoder:(NSCoder *)decoder {
 156     if ((self = [super init])) {
 157         self.hash = [decoder decodeObjectForKey:@"hash"];
 158         self.filePath = [decoder decodeObjectForKey:@"filePath"];
 159         self.isDirectory = [decoder decodeBoolForKey:@"isDirectory"];
 160         self.tmpFilePath = [decoder decodeObjectForKey:@"tmpFilePath"];
 161     }
 162     return self;
 163 }
 164
 165 - (void)encodeWithCoder:(NSCoder *)encoder {
 166     [encoder encodeObject:hash forKey:@"hash"];
 167     [encoder encodeObject:filePath forKey:@"filePath"];
 168     [encoder encodeBool:isDirectory forKey:@"isDirectory"];
 169     [encoder encodeObject:tmpFilePath forKey:@"tmpFilePath"];
 170 }
 171
 172 @end