transmission/macosx/StringAdditions.m

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/******************************************************************************
* Copyright (c) 2005-2006 Transmission authors and contributors
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*****************************************************************************/
#import "StringAdditions.h"
#import "Utils.h"
@implementation NSString (StringAdditions)
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+ (NSString *) stringWithInt: (int) value
{
return [NSString stringWithFormat: @"%d", value];
}
+ (NSString *) stringForFileSize: (uint64_t) size
{
if (size < 1024)
{
/* 0 to 1023 bytes */
return [NSString stringWithFormat: @"%lld bytes", size];
}
NSString * unit;
if (size < 1048576)
{
unit = @" KB";
}
else if (size < 1073741824)
{
unit = @" MB";
size /= 1024;
}
else
{
unit = @" GB";
size /= 1048576;
}
NSString * value;
if (size < 10240)
/* 1.00 to 9.99 XB */
value = [NSString stringWithFormat: @"%lld.%02lld",
size / 1024, ( size % 1024 ) * 100 / 1024];
else if (size < 102400)
/* 10.0 to 99.9 XB */
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value = [NSString stringWithFormat: @"%lld.%lld",
size / 1024, ( size % 1024 ) * 10 / 1024];
else
/* 100+ XB */
value = [NSString stringWithFormat: @"%lld", size / 1024];
return [value stringByAppendingString: unit];
}
+ (NSString *) stringForSpeed: (float) speed
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{
return [[self stringForSpeedAbbrev: speed]
stringByAppendingString: @"B/s"];
}
+ (NSString *) stringForSpeedAbbrev: (float) speed
{
if (speed < 1000) /* 0.0 K to 999.9 K */
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return [NSString stringWithFormat: @"%.1f K", speed];
else if (speed < 102400) /* 0.98 M to 99.99 M */
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return [NSString stringWithFormat: @"%.2f M", speed / 1024];
else if (speed < 1024000) /* 100.0 M to 999.9 M */
return [NSString stringWithFormat: @"%.1f M", speed / 1024];
else /* Insane speeds */
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return [NSString stringWithFormat: @"%.2f G", speed / 1048576];
}
+ (NSString *) stringForRatio: (uint64_t) down upload: (uint64_t) up
{
if( !down && !up )
return @"N/A";
if( !down )
return [NSString stringWithUTF8String: "\xE2\x88\x9E"];
float ratio = (float) up / (float) down;
if( ratio < 10.0 )
return [NSString stringWithFormat: @"%.2f", ratio];
else if( ratio < 100.0 )
return [NSString stringWithFormat: @"%.1f", ratio];
else
return [NSString stringWithFormat: @"%.0f", ratio];
}
- (NSString *) stringFittingInWidth: (float) width
withAttributes: (NSDictionary *) attributes
{
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int i;
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float realWidth = [self sizeWithAttributes: attributes].width;
/* The whole string fits */
if( realWidth <= width )
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return self;
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/* Width is too small */
if ( [NS_ELLIPSIS sizeWithAttributes: attributes].width > width )
return @"";
/* Don't worry about ellipsis until the end */
width -= [NS_ELLIPSIS sizeWithAttributes: attributes].width;
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/* Approximate how many characters we'll need to drop... */
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i = [self length] * (width / realWidth);
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/* ... then refine it */
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NSString * newString = [self substringToIndex: i];
realWidth = [newString sizeWithAttributes: attributes].width;
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if( realWidth < width )
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{
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NSString * smallerString;
do
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{
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smallerString = newString;
newString = [self substringToIndex: ++i];
} while ([newString sizeWithAttributes: attributes].width <= width);
newString = smallerString;
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}
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else if( realWidth > width )
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{
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do
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{
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newString = [self substringToIndex: --i];
} while ([newString sizeWithAttributes: attributes].width > width);
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}
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else;
return [newString stringByAppendingString: NS_ELLIPSIS];
}
@end