transmission/macosx/StringAdditions.m

188 lines
6.1 KiB
Objective-C

/******************************************************************************
* $Id$
*
* 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]];
}
+ (NSString *) stringWithInt: (int) value
{
return [NSString stringWithFormat: @"%d", value];
}
+ (NSString *) stringForFileSize: (uint64_t) size
{
if (size < 1024)
return [NSString stringWithFormat: @"%lld bytes", size];
float convertedSize = (float) size;
NSString * unit;
if (size < 1048576)
{
convertedSize /= 1024.0;
unit = @" KB";
}
else if (size < 1073741824)
{
convertedSize /= 1048576.0;
unit = @" MB";
}
else
{
convertedSize /= 1073741824.0;
unit = @" GB";
}
NSString * sizeString;
//attempt to have values with 3 digits
if (convertedSize < 10.0)
sizeString = [NSString stringWithFormat: @"%.2f", convertedSize];
else if (convertedSize < 100.0)
sizeString = [NSString stringWithFormat: @"%.1f", convertedSize];
else
sizeString = [NSString stringWithFormat: @"%.0f", convertedSize];
return [sizeString stringByAppendingString: unit];
}
+ (NSString *) stringForSpeed: (float) speed
{
return [[self stringForSpeedAbbrev: speed] stringByAppendingString: @"B/s"];
}
+ (NSString *) stringForSpeedAbbrev: (float) speed
{
if (speed < 1000.0) //0.0 K to 999.9 K
return [NSString stringWithFormat: @"%.1f K", speed];
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;
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];
}
- (NSAttributedString *) attributedStringFittingInWidth: (float) width
attributes: (NSDictionary *) attributes
{
int i;
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;
/* Width is too small */
if ( ellipsisWidth > width )
return [[[NSAttributedString alloc] initWithString: @"" attributes: attributes] autorelease];
/* Don't worry about ellipsis until the end */
width -= ellipsisWidth;
/* Approximate how many characters we'll need to drop... */
i = [self length] * (width / realWidth);
/* ... then refine it */
NSString * newString = [self substringToIndex: i];
realWidth = [newString sizeWithAttributes: attributes].width;
if( realWidth < width )
{
NSString * smallerString;
do
{
smallerString = newString;
newString = [self substringToIndex: ++i];
} while ([newString sizeWithAttributes: attributes].width <= width);
newString = smallerString;
}
else if( realWidth > width )
{
do
{
newString = [self substringToIndex: --i];
} while ([newString sizeWithAttributes: attributes].width > width);
}
else;
return [[[NSAttributedString alloc] initWithString: [newString stringByAppendingEllipsis]
attributes: attributes] autorelease];
}
- (NSComparisonResult) compareIP: (NSString *) string
{
if ([self isEqualToString: string])
return NSOrderedSame;
NSEnumerator * selfSections = [[self componentsSeparatedByString: @"."] objectEnumerator],
* newSections = [[string componentsSeparatedByString: @"."] objectEnumerator];
NSComparisonResult result;
NSString * selfString = [selfSections nextObject], * newString = [newSections nextObject];
while (selfString && newString)
{
if ((result = [selfString compare: newString options: NSNumericSearch]) != NSOrderedSame)
return result;
selfString = [selfSections nextObject];
newString = [newSections nextObject];
}
if (selfString)
return NSOrderedDescending;
else if (newString)
return NSOrderedAscending;
else
return NSOrderedSame;
}
@end