transmission/macosx/StringAdditions.m

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/******************************************************************************
* $Id$
*
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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"
@implementation NSString (StringAdditions)
+ (NSString *) ellipsis
{
return [NSString stringWithUTF8String: "\xE2\x80\xA6"];
}
- (NSString *) stringByAppendingEllipsis
{
return [self stringByAppendingString: [NSString ellipsis]];
}
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+ (NSString *) stringWithInt: (int) value
{
return [NSString stringWithFormat: @"%d", value];
}
+ (NSString *) stringForFileSize: (uint64_t) size
{
if (size < 1024)
return [NSString stringWithFormat: @"%lld bytes", size];
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float convertedSize = (float) size;
NSString * unit;
if (size < 1048576)
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{
convertedSize /= 1024.0;
unit = @" KB";
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}
else if (size < 1073741824)
{
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convertedSize /= 1048576.0;
unit = @" MB";
}
else
{
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convertedSize /= 1073741824.0;
unit = @" GB";
}
NSString * sizeString;
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//attempt to have values with 3 digits
if (convertedSize < 10.0)
sizeString = [NSString stringWithFormat: @"%.2f", convertedSize];
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else if (convertedSize < 100.0)
sizeString = [NSString stringWithFormat: @"%.1f", convertedSize];
else
sizeString = [NSString stringWithFormat: @"%.0f", convertedSize];
return [sizeString stringByAppendingString: unit];
}
+ (NSString *) stringForSpeed: (float) speed
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{
return [[self stringForSpeedAbbrev: speed] stringByAppendingString: @"B/s"];
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}
+ (NSString *) stringForSpeedAbbrev: (float) speed
{
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if (speed < 1000.0) //0.0 K to 999.9 K
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return [NSString stringWithFormat: @"%.1f K", speed];
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else if (speed < 102400.0) //0.98 M to 99.99 M
return [NSString stringWithFormat: @"%.2f M", speed / 1024.0];
else if (speed < 1024000.0) //100.0 M to 999.9 M
return [NSString stringWithFormat: @"%.1f M", speed / 1024.0];
else //insane speeds
return [NSString stringWithFormat: @"%.2f G", speed / 1048576.0];
}
+ (NSString *) stringForRatioWithDownload: (uint64_t) down upload: (uint64_t) up
{
if (down == 0)
return up == 0 ? @"N/A" : [NSString stringWithUTF8String: "\xE2\x88\x9E"];
float ratio = (float) up / (float) down;
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if (ratio < 10.0)
return [NSString stringWithFormat: @"%.2f", ratio];
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else if (ratio < 100.0)
return [NSString stringWithFormat: @"%.1f", ratio];
else
return [NSString stringWithFormat: @"%.0f", ratio];
}
- (NSAttributedString *) attributedStringFittingInWidth: (float) width
attributes: (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 )
return [[[NSAttributedString alloc] initWithString: self attributes: attributes] autorelease];
float ellipsisWidth = [[NSString ellipsis] sizeWithAttributes: attributes].width;
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/* Width is too small */
if ( ellipsisWidth > width )
return [[[NSAttributedString alloc] initWithString: @"" attributes: attributes] autorelease];
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/* Don't worry about ellipsis until the end */
width -= ellipsisWidth;
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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 [[[NSAttributedString alloc] initWithString: [newString stringByAppendingEllipsis]
attributes: attributes] autorelease];
}
@end