root / pithos-macos / BytesSizeTransformer.m @ cb6abe72
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// BytesSizeTransformer.m |
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// pithos-macos |
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// |
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// Copyright 2011 GRNET S.A. All rights reserved. |
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// |
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// Redistribution and use in source and binary forms, with or |
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// without modification, are permitted provided that the following |
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// conditions are met: |
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// |
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// 1. Redistributions of source code must retain the above |
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// copyright notice, this list of conditions and the following |
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// disclaimer. |
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// |
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// 2. Redistributions in binary form must reproduce the above |
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// copyright notice, this list of conditions and the following |
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// disclaimer in the documentation and/or other materials |
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// provided with the distribution. |
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// |
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// THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS |
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// OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
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// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
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// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR |
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// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
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// USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
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// AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
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// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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// POSSIBILITY OF SUCH DAMAGE. |
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// |
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// The views and conclusions contained in the software and |
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// documentation are those of the authors and should not be |
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// interpreted as representing official policies, either expressed |
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// or implied, of GRNET S.A. |
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#import "BytesSizeTransformer.h" |
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@implementation BytesSizeTransformer |
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+ (Class)transformedValueClass { |
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return [NSString class]; |
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} |
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|
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+ (BOOL)allowsReverseTransformation { |
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return NO; |
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} |
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|
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- (id)transformedValue:(id)value { |
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if (value == nil) |
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return nil; |
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double bytes = [value unsignedIntegerValue] + 0.0; |
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if (bytes <= 999) { |
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return [NSString stringWithFormat:@"%d B", (int)bytes]; |
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} else if (bytes <= 999000) { |
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return [NSString stringWithFormat:@"%d KB", (int)ceil(bytes / 1000)]; |
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} else if (bytes <= 999900000) { |
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double megabytes = floor(bytes / 1000000); |
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double hundredkilobytes = ceil((bytes - megabytes * 1000000) / 100000); |
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if (hundredkilobytes == 10) { |
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megabytes++; |
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hundredkilobytes = 0; |
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} |
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if (hundredkilobytes == 0) { |
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return [NSString stringWithFormat:@"%d MB", (int)megabytes]; |
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} else { |
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return [NSString stringWithFormat:@"%d.%d MB", (int)megabytes, (int)hundredkilobytes]; |
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} |
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} else { |
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double gigabytes = floor(bytes / 1000000000); |
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double hundredmegabytes = ceil((bytes - gigabytes * 1000000000) / 100000000); |
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if (hundredmegabytes == 10) { |
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gigabytes++; |
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hundredmegabytes = 0; |
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} |
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if (hundredmegabytes == 0) { |
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return [NSString stringWithFormat:@"%d GB", (int)gigabytes]; |
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} else { |
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return [NSString stringWithFormat:@"%d.%d GB", (int)gigabytes, (int)hundredmegabytes]; |
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} |
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} |
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} |
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+ (void)initialize { |
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[[self class] setValueTransformer:[self new] forName:@"BytesSizeTransformer"]; |
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} |
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@end |