NSString utility parts of the width-based truncation patch, bug 161387. Patch from Max Horn.
This commit is contained in:
sfraser%netscape.com
Родитель
ff2876e028
Коммит
2d05b3e393
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@ -1,63 +0,0 @@
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|||
/* ***** BEGIN LICENSE BLOCK *****
|
||||
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
|
||||
*
|
||||
* The contents of this file are subject to the Mozilla Public License Version
|
||||
* 1.1 (the "License"); you may not use this file except in compliance with
|
||||
* the License. You may obtain a copy of the License at
|
||||
* http://www.mozilla.org/MPL/
|
||||
*
|
||||
* Software distributed under the License is distributed on an "AS IS" basis,
|
||||
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
||||
* for the specific language governing rights and limitations under the
|
||||
* License.
|
||||
*
|
||||
* The Original Code is Chimera code.
|
||||
*
|
||||
* The Initial Developer of the Original Code is
|
||||
* Netscape Communications Corporation.
|
||||
* Portions created by the Initial Developer are Copyright (C) 2002
|
||||
* the Initial Developer. All Rights Reserved.
|
||||
*
|
||||
* Contributor(s):
|
||||
* Simon Fraser <sfraser@netscape.com>
|
||||
*
|
||||
* Alternatively, the contents of this file may be used under the terms of
|
||||
* either the GNU General Public License Version 2 or later (the "GPL"), or
|
||||
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
||||
* in which case the provisions of the GPL or the LGPL are applicable instead
|
||||
* of those above. If you wish to allow use of your version of this file only
|
||||
* under the terms of either the GPL or the LGPL, and not to allow others to
|
||||
* use your version of this file under the terms of the MPL, indicate your
|
||||
* decision by deleting the provisions above and replace them with the notice
|
||||
* and other provisions required by the GPL or the LGPL. If you do not delete
|
||||
* the provisions above, a recipient may use your version of this file under
|
||||
* the terms of any one of the MPL, the GPL or the LGPL.
|
||||
*
|
||||
* ***** END LICENSE BLOCK ***** */
|
||||
|
||||
#import <Foundation/Foundation.h>
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||||
#import "nscore.h"
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||||
|
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class nsAString;
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||||
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typedef enum
|
||||
{
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kTruncateAtStart,
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kTruncateAtMiddle,
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kTruncateAtEnd
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} ETruncationType;
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||||
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||||
|
||||
// a category to extend NSString
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@interface NSString (ChimeraStringUtils)
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||||
|
||||
+ (id)ellipsisString;
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||||
+ (id)stringWithPRUnichars:(const PRUnichar*)inString;
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||||
+ (id)stringWith_nsAString:(const nsAString&)inString;
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- (void)assignTo_nsAString:(nsAString&)ioString;
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|
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- (NSString *)stringByRemovingCharactersInSet:(NSCharacterSet*)characterSet;
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- (NSString *)stringByReplacingCharactersInSet:(NSCharacterSet*)characterSet withString:(NSString*)string;
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- (NSString*)stringByTruncatingTo:(int)maxCharacters at:(ETruncationType)truncationType;
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|
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@end
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||||
|
|
@ -1,171 +0,0 @@
|
|||
/* ***** BEGIN LICENSE BLOCK *****
|
||||
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
|
||||
*
|
||||
* The contents of this file are subject to the Mozilla Public License Version
|
||||
* 1.1 (the "License"); you may not use this file except in compliance with
|
||||
* the License. You may obtain a copy of the License at
|
||||
* http://www.mozilla.org/MPL/
|
||||
*
|
||||
* Software distributed under the License is distributed on an "AS IS" basis,
|
||||
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
||||
* for the specific language governing rights and limitations under the
|
||||
* License.
|
||||
*
|
||||
* The Original Code is Chimera code.
|
||||
*
|
||||
* The Initial Developer of the Original Code is
|
||||
* Netscape Communications Corporation.
|
||||
* Portions created by the Initial Developer are Copyright (C) 2002
|
||||
* the Initial Developer. All Rights Reserved.
|
||||
*
|
||||
* Contributor(s):
|
||||
* Simon Fraser <sfraser@netscape.com>
|
||||
*
|
||||
* Alternatively, the contents of this file may be used under the terms of
|
||||
* either the GNU General Public License Version 2 or later (the "GPL"), or
|
||||
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
||||
* in which case the provisions of the GPL or the LGPL are applicable instead
|
||||
* of those above. If you wish to allow use of your version of this file only
|
||||
* under the terms of either the GPL or the LGPL, and not to allow others to
|
||||
* use your version of this file under the terms of the MPL, indicate your
|
||||
* decision by deleting the provisions above and replace them with the notice
|
||||
* and other provisions required by the GPL or the LGPL. If you do not delete
|
||||
* the provisions above, a recipient may use your version of this file under
|
||||
* the terms of any one of the MPL, the GPL or the LGPL.
|
||||
*
|
||||
* ***** END LICENSE BLOCK ***** */
|
||||
|
||||
#import "NSString+Utils.h"
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||||
|
||||
#include "nsString.h"
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||||
#include "nsPromiseFlatString.h"
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||||
#include "nsCRT.h"
|
||||
|
||||
@implementation NSString (ChimeraStringUtils)
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||||
|
||||
|
||||
+ (id)ellipsisString
|
||||
{
|
||||
static NSString* sEllipsisString = nil;
|
||||
if (!sEllipsisString)
|
||||
{
|
||||
unichar ellipsisChar = 0x2026;
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||||
sEllipsisString = [[NSString alloc] initWithCharacters:&ellipsisChar length:1];
|
||||
}
|
||||
|
||||
return sEllipsisString;
|
||||
}
|
||||
|
||||
+ (id)stringWithPRUnichars:(const PRUnichar*)inString
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||||
{
|
||||
if (inString)
|
||||
return [self stringWithCharacters:inString length:nsCRT::strlen(inString)];
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||||
else
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||||
return [self string];
|
||||
}
|
||||
|
||||
+ (id)stringWith_nsAString:(const nsAString&)inString
|
||||
{
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nsPromiseFlatString flatString = PromiseFlatString(inString);
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return [self stringWithCharacters:flatString.get() length:flatString.Length()];
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||||
}
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||||
|
||||
#define ASSIGN_STACK_BUFFER_CHARACTERS 256
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||||
|
||||
- (void)assignTo_nsAString:(nsAString&)ioString
|
||||
{
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||||
PRUnichar stackBuffer[ASSIGN_STACK_BUFFER_CHARACTERS];
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PRUnichar* buffer = stackBuffer;
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// XXX maybe fix this to use SetLength(0), SetLength(len), and a writing iterator.
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unsigned int len = [self length];
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if (len + 1 > ASSIGN_STACK_BUFFER_CHARACTERS)
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||||
{
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buffer = (PRUnichar *)malloc(sizeof(PRUnichar) * (len + 1));
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||||
if (!buffer)
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||||
return;
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||||
}
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||||
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[self getCharacters: buffer]; // does not null terminate
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ioString.Assign(buffer, len);
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if (buffer != stackBuffer)
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free(buffer);
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||||
}
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||||
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||||
- (NSString *)stringByRemovingCharactersInSet:(NSCharacterSet*)characterSet
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||||
{
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||||
NSScanner* cleanerScanner = [NSScanner scannerWithString:self];
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||||
NSMutableString* cleanString = [NSMutableString stringWithCapacity:[self length]];
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||||
|
||||
while (![cleanerScanner isAtEnd])
|
||||
{
|
||||
NSString* stringFragment;
|
||||
if ([cleanerScanner scanUpToCharactersFromSet:characterSet intoString:&stringFragment])
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||||
[cleanString appendString:stringFragment];
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||||
|
||||
[cleanerScanner scanCharactersFromSet:characterSet intoString:nil];
|
||||
}
|
||||
|
||||
return cleanString;
|
||||
}
|
||||
|
||||
- (NSString *)stringByReplacingCharactersInSet:(NSCharacterSet*)characterSet withString:(NSString*)string
|
||||
{
|
||||
NSScanner* cleanerScanner = [NSScanner scannerWithString:self];
|
||||
NSMutableString* cleanString = [NSMutableString stringWithCapacity:[self length]];
|
||||
|
||||
while (![cleanerScanner isAtEnd])
|
||||
{
|
||||
NSString* stringFragment;
|
||||
if ([cleanerScanner scanUpToCharactersFromSet:characterSet intoString:&stringFragment])
|
||||
[cleanString appendString:stringFragment];
|
||||
|
||||
if ([cleanerScanner scanCharactersFromSet:characterSet intoString:nil])
|
||||
[cleanString appendString:string];
|
||||
}
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||||
|
||||
return cleanString;
|
||||
}
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||||
|
||||
- (NSString*)stringByTruncatingTo:(int)maxCharacters at:(ETruncationType)truncationType
|
||||
{
|
||||
if ([self length] > maxCharacters)
|
||||
{
|
||||
NSMutableString *croppedString = [self mutableCopy];
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||||
NSRange replaceRange;
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||||
replaceRange.length = [self length] - maxCharacters;
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||||
|
||||
switch (truncationType)
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||||
{
|
||||
case kTruncateAtStart:
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||||
replaceRange.location = 0;
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||||
break;
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||||
|
||||
case kTruncateAtMiddle:
|
||||
replaceRange.location = maxCharacters / 2;
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||||
break;
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||||
|
||||
case kTruncateAtEnd:
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||||
replaceRange.location = maxCharacters;
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||||
break;
|
||||
|
||||
default:
|
||||
#if DEBUG
|
||||
NSLog(@"Unknown truncation type in stringByTruncatingTo::");
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||||
#endif
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||||
break;
|
||||
}
|
||||
|
||||
[croppedString replaceCharactersInRange:replaceRange withString:[NSString ellipsisString]];
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||||
return croppedString;
|
||||
}
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||||
else
|
||||
{
|
||||
return [[self copy] autorelease];
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
@end
|
||||
|
|
@ -58,6 +58,13 @@ typedef enum
|
|||
|
||||
- (NSString *)stringByRemovingCharactersInSet:(NSCharacterSet*)characterSet;
|
||||
- (NSString *)stringByReplacingCharactersInSet:(NSCharacterSet*)characterSet withString:(NSString*)string;
|
||||
- (NSString*)stringByTruncatingTo:(int)maxCharacters at:(ETruncationType)truncationType;
|
||||
- (NSString *)stringByTruncatingTo:(unsigned int)maxCharacters at:(ETruncationType)truncationType;
|
||||
|
||||
@end
|
||||
|
||||
@interface NSMutableString (ChimeraMutableStringUtils)
|
||||
|
||||
- (void)truncateTo:(unsigned)maxCharacters at:(ETruncationType)truncationType;
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||||
- (void)truncateToWidth:(float)maxWidth at:(ETruncationType)truncationType withAttributes:(NSDictionary *)attributes;
|
||||
|
||||
@end
|
||||
|
|
|
|||
|
|
@ -35,12 +35,14 @@
|
|||
*
|
||||
* ***** END LICENSE BLOCK ***** */
|
||||
|
||||
#import <AppKit/AppKit.h> // for NSStringDrawing.h
|
||||
#import "NSString+Utils.h"
|
||||
|
||||
#include "nsString.h"
|
||||
#include "nsPromiseFlatString.h"
|
||||
#include "nsCRT.h"
|
||||
|
||||
|
||||
@implementation NSString (ChimeraStringUtils)
|
||||
|
||||
|
||||
|
|
@ -70,12 +72,12 @@
|
|||
return [self stringWithCharacters:flatString.get() length:flatString.Length()];
|
||||
}
|
||||
|
||||
#define ASSIGN_STACK_BUFFER_CHARACTERS 256
|
||||
#define ASSIGN_STACK_BUFFER_CHARACTERS 256
|
||||
|
||||
- (void)assignTo_nsAString:(nsAString&)ioString
|
||||
{
|
||||
PRUnichar stackBuffer[ASSIGN_STACK_BUFFER_CHARACTERS];
|
||||
PRUnichar* buffer = stackBuffer;
|
||||
PRUnichar stackBuffer[ASSIGN_STACK_BUFFER_CHARACTERS];
|
||||
PRUnichar* buffer = stackBuffer;
|
||||
|
||||
// XXX maybe fix this to use SetLength(0), SetLength(len), and a writing iterator.
|
||||
unsigned int len = [self length];
|
||||
|
|
@ -87,7 +89,7 @@
|
|||
return;
|
||||
}
|
||||
|
||||
[self getCharacters: buffer]; // does not null terminate
|
||||
[self getCharacters: buffer]; // does not null terminate
|
||||
ioString.Assign(buffer, len);
|
||||
|
||||
if (buffer != stackBuffer)
|
||||
|
|
@ -129,43 +131,99 @@
|
|||
return cleanString;
|
||||
}
|
||||
|
||||
- (NSString*)stringByTruncatingTo:(int)maxCharacters at:(ETruncationType)truncationType
|
||||
- (NSString*)stringByTruncatingTo:(unsigned in)maxCharacters at:(ETruncationType)truncationType
|
||||
{
|
||||
if ([self length] > maxCharacters)
|
||||
{
|
||||
NSMutableString *croppedString = [self mutableCopy];
|
||||
NSRange replaceRange;
|
||||
replaceRange.length = [self length] - maxCharacters;
|
||||
|
||||
switch (truncationType)
|
||||
{
|
||||
case kTruncateAtStart:
|
||||
replaceRange.location = 0;
|
||||
break;
|
||||
|
||||
case kTruncateAtMiddle:
|
||||
replaceRange.location = maxCharacters / 2;
|
||||
break;
|
||||
|
||||
case kTruncateAtEnd:
|
||||
replaceRange.location = maxCharacters;
|
||||
break;
|
||||
|
||||
default:
|
||||
#if DEBUG
|
||||
NSLog(@"Unknown truncation type in stringByTruncatingTo::");
|
||||
#endif
|
||||
break;
|
||||
}
|
||||
|
||||
[croppedString replaceCharactersInRange:replaceRange withString:[NSString ellipsisString]];
|
||||
return croppedString;
|
||||
NSMutableString *mutableCopy = [self mutableCopy];
|
||||
[mutableCopy truncateTo:maxCharacters at:truncationType];
|
||||
return [mutableCopy autorelease];
|
||||
}
|
||||
else
|
||||
|
||||
return [[self copy] autorelease];
|
||||
}
|
||||
|
||||
@end
|
||||
|
||||
|
||||
@implementation NSMutableString (ChimeraMutableStringUtils)
|
||||
|
||||
- (void)truncateTo:(unsigned)maxCharacters at:(ETruncationType)truncationType
|
||||
{
|
||||
if ([self length] > maxCharacters)
|
||||
{
|
||||
return [[self copy] autorelease];
|
||||
NSRange replaceRange;
|
||||
replaceRange.length = [self length] - maxCharacters;
|
||||
|
||||
switch (truncationType)
|
||||
{
|
||||
case kTruncateAtStart:
|
||||
replaceRange.location = 0;
|
||||
break;
|
||||
|
||||
case kTruncateAtMiddle:
|
||||
replaceRange.location = maxCharacters / 2;
|
||||
break;
|
||||
|
||||
case kTruncateAtEnd:
|
||||
replaceRange.location = maxCharacters;
|
||||
break;
|
||||
|
||||
default:
|
||||
#if DEBUG
|
||||
NSLog(@"Unknown truncation type in stringByTruncatingTo::");
|
||||
#endif
|
||||
replaceRange.location = maxCharacters;
|
||||
break;
|
||||
}
|
||||
|
||||
[self replaceCharactersInRange:replaceRange withString:[NSString ellipsisString]];
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
- (void)truncateToWidth:(float)maxWidth at:(ETruncationType)truncationType withAttributes:(NSDictionary *)attributes
|
||||
{
|
||||
// First check if we have to truncate at all.
|
||||
if ([self sizeWithAttributes:attributes].width > maxWidth)
|
||||
{
|
||||
// Essentially, we perform a binary search on the string length
|
||||
// which fits best into maxWidth.
|
||||
|
||||
float width;
|
||||
int lo = 0;
|
||||
int hi = [self length];
|
||||
int mid;
|
||||
|
||||
// Make a backup copy of the string so that we can restore it if we fail low.
|
||||
NSMutableString *backup = [self mutableCopy];
|
||||
|
||||
while (hi >= lo)
|
||||
{
|
||||
mid = (hi + lo) / 2;
|
||||
|
||||
// Cut to mid chars and calculate the resulting width
|
||||
[self truncateTo:mid at:truncationType];
|
||||
width = [self sizeWithAttributes:attributes].width;
|
||||
|
||||
if (width > maxWidth) {
|
||||
// Fail high - string is still to wide. For the next cut, we can simply
|
||||
// work on the already cut string, so we don't restore using the backup.
|
||||
hi = mid - 1;
|
||||
} else if (width == maxWidth) {
|
||||
// Perfect match, abort the search.
|
||||
break;
|
||||
} else {
|
||||
// Fail low - we cut off to much. Restore the string before cutting again.
|
||||
lo = mid + 1;
|
||||
[self setString:backup];
|
||||
}
|
||||
}
|
||||
// Perform the final cut (unless this was already a perfect match).
|
||||
if (width != maxWidth)
|
||||
[self truncateTo:hi at:truncationType];
|
||||
[backup release];
|
||||
}
|
||||
}
|
||||
|
||||
@end
|
||||
|
|
|
|||
|
|
@ -1,63 +0,0 @@
|
|||
/* ***** BEGIN LICENSE BLOCK *****
|
||||
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
|
||||
*
|
||||
* The contents of this file are subject to the Mozilla Public License Version
|
||||
* 1.1 (the "License"); you may not use this file except in compliance with
|
||||
* the License. You may obtain a copy of the License at
|
||||
* http://www.mozilla.org/MPL/
|
||||
*
|
||||
* Software distributed under the License is distributed on an "AS IS" basis,
|
||||
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
||||
* for the specific language governing rights and limitations under the
|
||||
* License.
|
||||
*
|
||||
* The Original Code is Chimera code.
|
||||
*
|
||||
* The Initial Developer of the Original Code is
|
||||
* Netscape Communications Corporation.
|
||||
* Portions created by the Initial Developer are Copyright (C) 2002
|
||||
* the Initial Developer. All Rights Reserved.
|
||||
*
|
||||
* Contributor(s):
|
||||
* Simon Fraser <sfraser@netscape.com>
|
||||
*
|
||||
* Alternatively, the contents of this file may be used under the terms of
|
||||
* either the GNU General Public License Version 2 or later (the "GPL"), or
|
||||
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
||||
* in which case the provisions of the GPL or the LGPL are applicable instead
|
||||
* of those above. If you wish to allow use of your version of this file only
|
||||
* under the terms of either the GPL or the LGPL, and not to allow others to
|
||||
* use your version of this file under the terms of the MPL, indicate your
|
||||
* decision by deleting the provisions above and replace them with the notice
|
||||
* and other provisions required by the GPL or the LGPL. If you do not delete
|
||||
* the provisions above, a recipient may use your version of this file under
|
||||
* the terms of any one of the MPL, the GPL or the LGPL.
|
||||
*
|
||||
* ***** END LICENSE BLOCK ***** */
|
||||
|
||||
#import <Foundation/Foundation.h>
|
||||
#import "nscore.h"
|
||||
|
||||
class nsAString;
|
||||
|
||||
typedef enum
|
||||
{
|
||||
kTruncateAtStart,
|
||||
kTruncateAtMiddle,
|
||||
kTruncateAtEnd
|
||||
} ETruncationType;
|
||||
|
||||
|
||||
// a category to extend NSString
|
||||
@interface NSString (ChimeraStringUtils)
|
||||
|
||||
+ (id)ellipsisString;
|
||||
+ (id)stringWithPRUnichars:(const PRUnichar*)inString;
|
||||
+ (id)stringWith_nsAString:(const nsAString&)inString;
|
||||
- (void)assignTo_nsAString:(nsAString&)ioString;
|
||||
|
||||
- (NSString *)stringByRemovingCharactersInSet:(NSCharacterSet*)characterSet;
|
||||
- (NSString *)stringByReplacingCharactersInSet:(NSCharacterSet*)characterSet withString:(NSString*)string;
|
||||
- (NSString*)stringByTruncatingTo:(int)maxCharacters at:(ETruncationType)truncationType;
|
||||
|
||||
@end
|
||||
|
|
@ -1,171 +0,0 @@
|
|||
/* ***** BEGIN LICENSE BLOCK *****
|
||||
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
|
||||
*
|
||||
* The contents of this file are subject to the Mozilla Public License Version
|
||||
* 1.1 (the "License"); you may not use this file except in compliance with
|
||||
* the License. You may obtain a copy of the License at
|
||||
* http://www.mozilla.org/MPL/
|
||||
*
|
||||
* Software distributed under the License is distributed on an "AS IS" basis,
|
||||
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
||||
* for the specific language governing rights and limitations under the
|
||||
* License.
|
||||
*
|
||||
* The Original Code is Chimera code.
|
||||
*
|
||||
* The Initial Developer of the Original Code is
|
||||
* Netscape Communications Corporation.
|
||||
* Portions created by the Initial Developer are Copyright (C) 2002
|
||||
* the Initial Developer. All Rights Reserved.
|
||||
*
|
||||
* Contributor(s):
|
||||
* Simon Fraser <sfraser@netscape.com>
|
||||
*
|
||||
* Alternatively, the contents of this file may be used under the terms of
|
||||
* either the GNU General Public License Version 2 or later (the "GPL"), or
|
||||
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
||||
* in which case the provisions of the GPL or the LGPL are applicable instead
|
||||
* of those above. If you wish to allow use of your version of this file only
|
||||
* under the terms of either the GPL or the LGPL, and not to allow others to
|
||||
* use your version of this file under the terms of the MPL, indicate your
|
||||
* decision by deleting the provisions above and replace them with the notice
|
||||
* and other provisions required by the GPL or the LGPL. If you do not delete
|
||||
* the provisions above, a recipient may use your version of this file under
|
||||
* the terms of any one of the MPL, the GPL or the LGPL.
|
||||
*
|
||||
* ***** END LICENSE BLOCK ***** */
|
||||
|
||||
#import "NSString+Utils.h"
|
||||
|
||||
#include "nsString.h"
|
||||
#include "nsPromiseFlatString.h"
|
||||
#include "nsCRT.h"
|
||||
|
||||
@implementation NSString (ChimeraStringUtils)
|
||||
|
||||
|
||||
+ (id)ellipsisString
|
||||
{
|
||||
static NSString* sEllipsisString = nil;
|
||||
if (!sEllipsisString)
|
||||
{
|
||||
unichar ellipsisChar = 0x2026;
|
||||
sEllipsisString = [[NSString alloc] initWithCharacters:&ellipsisChar length:1];
|
||||
}
|
||||
|
||||
return sEllipsisString;
|
||||
}
|
||||
|
||||
+ (id)stringWithPRUnichars:(const PRUnichar*)inString
|
||||
{
|
||||
if (inString)
|
||||
return [self stringWithCharacters:inString length:nsCRT::strlen(inString)];
|
||||
else
|
||||
return [self string];
|
||||
}
|
||||
|
||||
+ (id)stringWith_nsAString:(const nsAString&)inString
|
||||
{
|
||||
nsPromiseFlatString flatString = PromiseFlatString(inString);
|
||||
return [self stringWithCharacters:flatString.get() length:flatString.Length()];
|
||||
}
|
||||
|
||||
#define ASSIGN_STACK_BUFFER_CHARACTERS 256
|
||||
|
||||
- (void)assignTo_nsAString:(nsAString&)ioString
|
||||
{
|
||||
PRUnichar stackBuffer[ASSIGN_STACK_BUFFER_CHARACTERS];
|
||||
PRUnichar* buffer = stackBuffer;
|
||||
|
||||
// XXX maybe fix this to use SetLength(0), SetLength(len), and a writing iterator.
|
||||
unsigned int len = [self length];
|
||||
|
||||
if (len + 1 > ASSIGN_STACK_BUFFER_CHARACTERS)
|
||||
{
|
||||
buffer = (PRUnichar *)malloc(sizeof(PRUnichar) * (len + 1));
|
||||
if (!buffer)
|
||||
return;
|
||||
}
|
||||
|
||||
[self getCharacters: buffer]; // does not null terminate
|
||||
ioString.Assign(buffer, len);
|
||||
|
||||
if (buffer != stackBuffer)
|
||||
free(buffer);
|
||||
}
|
||||
|
||||
- (NSString *)stringByRemovingCharactersInSet:(NSCharacterSet*)characterSet
|
||||
{
|
||||
NSScanner* cleanerScanner = [NSScanner scannerWithString:self];
|
||||
NSMutableString* cleanString = [NSMutableString stringWithCapacity:[self length]];
|
||||
|
||||
while (![cleanerScanner isAtEnd])
|
||||
{
|
||||
NSString* stringFragment;
|
||||
if ([cleanerScanner scanUpToCharactersFromSet:characterSet intoString:&stringFragment])
|
||||
[cleanString appendString:stringFragment];
|
||||
|
||||
[cleanerScanner scanCharactersFromSet:characterSet intoString:nil];
|
||||
}
|
||||
|
||||
return cleanString;
|
||||
}
|
||||
|
||||
- (NSString *)stringByReplacingCharactersInSet:(NSCharacterSet*)characterSet withString:(NSString*)string
|
||||
{
|
||||
NSScanner* cleanerScanner = [NSScanner scannerWithString:self];
|
||||
NSMutableString* cleanString = [NSMutableString stringWithCapacity:[self length]];
|
||||
|
||||
while (![cleanerScanner isAtEnd])
|
||||
{
|
||||
NSString* stringFragment;
|
||||
if ([cleanerScanner scanUpToCharactersFromSet:characterSet intoString:&stringFragment])
|
||||
[cleanString appendString:stringFragment];
|
||||
|
||||
if ([cleanerScanner scanCharactersFromSet:characterSet intoString:nil])
|
||||
[cleanString appendString:string];
|
||||
}
|
||||
|
||||
return cleanString;
|
||||
}
|
||||
|
||||
- (NSString*)stringByTruncatingTo:(int)maxCharacters at:(ETruncationType)truncationType
|
||||
{
|
||||
if ([self length] > maxCharacters)
|
||||
{
|
||||
NSMutableString *croppedString = [self mutableCopy];
|
||||
NSRange replaceRange;
|
||||
replaceRange.length = [self length] - maxCharacters;
|
||||
|
||||
switch (truncationType)
|
||||
{
|
||||
case kTruncateAtStart:
|
||||
replaceRange.location = 0;
|
||||
break;
|
||||
|
||||
case kTruncateAtMiddle:
|
||||
replaceRange.location = maxCharacters / 2;
|
||||
break;
|
||||
|
||||
case kTruncateAtEnd:
|
||||
replaceRange.location = maxCharacters;
|
||||
break;
|
||||
|
||||
default:
|
||||
#if DEBUG
|
||||
NSLog(@"Unknown truncation type in stringByTruncatingTo::");
|
||||
#endif
|
||||
break;
|
||||
}
|
||||
|
||||
[croppedString replaceCharactersInRange:replaceRange withString:[NSString ellipsisString]];
|
||||
return croppedString;
|
||||
}
|
||||
else
|
||||
{
|
||||
return [[self copy] autorelease];
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
@end
|
||||
|
|
@ -58,6 +58,13 @@ typedef enum
|
|||
|
||||
- (NSString *)stringByRemovingCharactersInSet:(NSCharacterSet*)characterSet;
|
||||
- (NSString *)stringByReplacingCharactersInSet:(NSCharacterSet*)characterSet withString:(NSString*)string;
|
||||
- (NSString*)stringByTruncatingTo:(int)maxCharacters at:(ETruncationType)truncationType;
|
||||
- (NSString *)stringByTruncatingTo:(unsigned int)maxCharacters at:(ETruncationType)truncationType;
|
||||
|
||||
@end
|
||||
|
||||
@interface NSMutableString (ChimeraMutableStringUtils)
|
||||
|
||||
- (void)truncateTo:(unsigned)maxCharacters at:(ETruncationType)truncationType;
|
||||
- (void)truncateToWidth:(float)maxWidth at:(ETruncationType)truncationType withAttributes:(NSDictionary *)attributes;
|
||||
|
||||
@end
|
||||
|
|
|
|||
|
|
@ -35,12 +35,14 @@
|
|||
*
|
||||
* ***** END LICENSE BLOCK ***** */
|
||||
|
||||
#import <AppKit/AppKit.h> // for NSStringDrawing.h
|
||||
#import "NSString+Utils.h"
|
||||
|
||||
#include "nsString.h"
|
||||
#include "nsPromiseFlatString.h"
|
||||
#include "nsCRT.h"
|
||||
|
||||
|
||||
@implementation NSString (ChimeraStringUtils)
|
||||
|
||||
|
||||
|
|
@ -70,12 +72,12 @@
|
|||
return [self stringWithCharacters:flatString.get() length:flatString.Length()];
|
||||
}
|
||||
|
||||
#define ASSIGN_STACK_BUFFER_CHARACTERS 256
|
||||
#define ASSIGN_STACK_BUFFER_CHARACTERS 256
|
||||
|
||||
- (void)assignTo_nsAString:(nsAString&)ioString
|
||||
{
|
||||
PRUnichar stackBuffer[ASSIGN_STACK_BUFFER_CHARACTERS];
|
||||
PRUnichar* buffer = stackBuffer;
|
||||
PRUnichar stackBuffer[ASSIGN_STACK_BUFFER_CHARACTERS];
|
||||
PRUnichar* buffer = stackBuffer;
|
||||
|
||||
// XXX maybe fix this to use SetLength(0), SetLength(len), and a writing iterator.
|
||||
unsigned int len = [self length];
|
||||
|
|
@ -87,7 +89,7 @@
|
|||
return;
|
||||
}
|
||||
|
||||
[self getCharacters: buffer]; // does not null terminate
|
||||
[self getCharacters: buffer]; // does not null terminate
|
||||
ioString.Assign(buffer, len);
|
||||
|
||||
if (buffer != stackBuffer)
|
||||
|
|
@ -129,43 +131,99 @@
|
|||
return cleanString;
|
||||
}
|
||||
|
||||
- (NSString*)stringByTruncatingTo:(int)maxCharacters at:(ETruncationType)truncationType
|
||||
- (NSString*)stringByTruncatingTo:(unsigned in)maxCharacters at:(ETruncationType)truncationType
|
||||
{
|
||||
if ([self length] > maxCharacters)
|
||||
{
|
||||
NSMutableString *croppedString = [self mutableCopy];
|
||||
NSRange replaceRange;
|
||||
replaceRange.length = [self length] - maxCharacters;
|
||||
|
||||
switch (truncationType)
|
||||
{
|
||||
case kTruncateAtStart:
|
||||
replaceRange.location = 0;
|
||||
break;
|
||||
|
||||
case kTruncateAtMiddle:
|
||||
replaceRange.location = maxCharacters / 2;
|
||||
break;
|
||||
|
||||
case kTruncateAtEnd:
|
||||
replaceRange.location = maxCharacters;
|
||||
break;
|
||||
|
||||
default:
|
||||
#if DEBUG
|
||||
NSLog(@"Unknown truncation type in stringByTruncatingTo::");
|
||||
#endif
|
||||
break;
|
||||
}
|
||||
|
||||
[croppedString replaceCharactersInRange:replaceRange withString:[NSString ellipsisString]];
|
||||
return croppedString;
|
||||
NSMutableString *mutableCopy = [self mutableCopy];
|
||||
[mutableCopy truncateTo:maxCharacters at:truncationType];
|
||||
return [mutableCopy autorelease];
|
||||
}
|
||||
else
|
||||
|
||||
return [[self copy] autorelease];
|
||||
}
|
||||
|
||||
@end
|
||||
|
||||
|
||||
@implementation NSMutableString (ChimeraMutableStringUtils)
|
||||
|
||||
- (void)truncateTo:(unsigned)maxCharacters at:(ETruncationType)truncationType
|
||||
{
|
||||
if ([self length] > maxCharacters)
|
||||
{
|
||||
return [[self copy] autorelease];
|
||||
NSRange replaceRange;
|
||||
replaceRange.length = [self length] - maxCharacters;
|
||||
|
||||
switch (truncationType)
|
||||
{
|
||||
case kTruncateAtStart:
|
||||
replaceRange.location = 0;
|
||||
break;
|
||||
|
||||
case kTruncateAtMiddle:
|
||||
replaceRange.location = maxCharacters / 2;
|
||||
break;
|
||||
|
||||
case kTruncateAtEnd:
|
||||
replaceRange.location = maxCharacters;
|
||||
break;
|
||||
|
||||
default:
|
||||
#if DEBUG
|
||||
NSLog(@"Unknown truncation type in stringByTruncatingTo::");
|
||||
#endif
|
||||
replaceRange.location = maxCharacters;
|
||||
break;
|
||||
}
|
||||
|
||||
[self replaceCharactersInRange:replaceRange withString:[NSString ellipsisString]];
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
- (void)truncateToWidth:(float)maxWidth at:(ETruncationType)truncationType withAttributes:(NSDictionary *)attributes
|
||||
{
|
||||
// First check if we have to truncate at all.
|
||||
if ([self sizeWithAttributes:attributes].width > maxWidth)
|
||||
{
|
||||
// Essentially, we perform a binary search on the string length
|
||||
// which fits best into maxWidth.
|
||||
|
||||
float width;
|
||||
int lo = 0;
|
||||
int hi = [self length];
|
||||
int mid;
|
||||
|
||||
// Make a backup copy of the string so that we can restore it if we fail low.
|
||||
NSMutableString *backup = [self mutableCopy];
|
||||
|
||||
while (hi >= lo)
|
||||
{
|
||||
mid = (hi + lo) / 2;
|
||||
|
||||
// Cut to mid chars and calculate the resulting width
|
||||
[self truncateTo:mid at:truncationType];
|
||||
width = [self sizeWithAttributes:attributes].width;
|
||||
|
||||
if (width > maxWidth) {
|
||||
// Fail high - string is still to wide. For the next cut, we can simply
|
||||
// work on the already cut string, so we don't restore using the backup.
|
||||
hi = mid - 1;
|
||||
} else if (width == maxWidth) {
|
||||
// Perfect match, abort the search.
|
||||
break;
|
||||
} else {
|
||||
// Fail low - we cut off to much. Restore the string before cutting again.
|
||||
lo = mid + 1;
|
||||
[self setString:backup];
|
||||
}
|
||||
}
|
||||
// Perform the final cut (unless this was already a perfect match).
|
||||
if (width != maxWidth)
|
||||
[self truncateTo:hi at:truncationType];
|
||||
[backup release];
|
||||
}
|
||||
}
|
||||
|
||||
@end
|
||||
|
|
|
|||
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