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transmission/macosx/StringAdditions.m
2006-02-09 13:44:14 +00:00

112 lines
3.2 KiB
Objective-C

//
// StringAdditions.m
// Transmission
//
// Created by Mitchell Livingston on 1/16/06.
// Copyright 2006 __MyCompanyName__. All rights reserved.
//
#import "StringAdditions.h"
#import "Utils.h"
@implementation NSString (StringAdditions)
+ (NSString *) stringForFileSize: (uint64_t) size
{
if (size < 1024)
return [NSString stringWithFormat: @"%lld bytes", size];
else if (size < 1048576)
return [NSString stringWithFormat: @"%lld.%lld KB",
size / 1024, ( size % 1024 ) / 103];
else if (size < 1073741824)
return [NSString stringWithFormat: @"%lld.%lld MB",
size / 1048576, ( size % 1048576 ) / 104858];
else
return [NSString stringWithFormat: @"%lld.%lld GB",
size / 1073741824, ( size % 1073741824 ) / 107374183];
}
+ (NSString *) stringForSpeed: (float) speed
{
return [[self stringForSpeedAbbrev: speed]
stringByAppendingString: @"B/s"];
}
+ (NSString *) stringForSpeedAbbrev: (float) speed
{
if (speed < 1000) /* 0.0 K to 999.9 K */
return [NSString stringWithFormat: @"%.1f K", speed];
else if (speed < 102400) /* 0.98 M to 99.99 M */
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 */
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
{
float w;
int i;
NSString * newString;
w = [self sizeWithAttributes: attributes].width;
if( w <= width )
/* The whole string fits */
return self;
/* Approximate how many characters we'll need to drop... */
i = [self length] * width / w - 1;
/* ... then refine it */
newString = [[self substringToIndex: i]
stringByAppendingString: NS_ELLIPSIS];
w = [newString sizeWithAttributes: attributes].width;
if( w < width )
{
NSString * bakString;
for( ;; )
{
bakString = newString;
newString = [[self substringToIndex: ++i]
stringByAppendingString: NS_ELLIPSIS];
if( [newString sizeWithAttributes: attributes].width > width )
return bakString;
}
}
else if( w > width )
{
for( ;; )
{
newString = [[self substringToIndex: --i]
stringByAppendingString: NS_ELLIPSIS];
if( [newString sizeWithAttributes: attributes].width <= width )
return newString;
}
}
else
{
return newString;
}
}
@end