зеркало из https://github.com/mozilla/pjs.git
172 строки
5.1 KiB
Plaintext
172 строки
5.1 KiB
Plaintext
/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Chimera code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 2002
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Simon Fraser <sfraser@netscape.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#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"
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@implementation NSString (ChimeraStringUtils)
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+ (id)ellipsisString
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{
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static NSString* sEllipsisString = nil;
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if (!sEllipsisString)
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{
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unichar ellipsisChar = 0x2026;
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sEllipsisString = [[NSString alloc] initWithCharacters:&ellipsisChar length:1];
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}
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return sEllipsisString;
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}
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+ (id)stringWithPRUnichars:(const PRUnichar*)inString
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{
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if (inString)
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return [self stringWithCharacters:inString length:nsCRT::strlen(inString)];
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else
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return [self string];
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}
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+ (id)stringWith_nsAString:(const nsAString&)inString
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{
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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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{
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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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[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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- (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])
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{
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NSString* stringFragment;
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if ([cleanerScanner scanUpToCharactersFromSet:characterSet intoString:&stringFragment])
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[cleanString appendString:stringFragment];
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[cleanerScanner scanCharactersFromSet:characterSet intoString:nil];
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}
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return cleanString;
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}
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- (NSString *)stringByReplacingCharactersInSet:(NSCharacterSet*)characterSet withString:(NSString*)string
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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])
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{
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NSString* stringFragment;
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if ([cleanerScanner scanUpToCharactersFromSet:characterSet intoString:&stringFragment])
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[cleanString appendString:stringFragment];
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if ([cleanerScanner scanCharactersFromSet:characterSet intoString:nil])
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[cleanString appendString:string];
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}
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return cleanString;
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}
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- (NSString*)stringByTruncatingTo:(int)maxCharacters at:(ETruncationType)truncationType
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{
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if ([self length] > maxCharacters)
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{
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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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{
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case kTruncateAtStart:
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replaceRange.location = 0;
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break;
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case kTruncateAtMiddle:
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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;
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default:
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#if DEBUG
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NSLog(@"Unknown truncation type in stringByTruncatingTo::");
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#endif
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break;
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}
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[croppedString replaceCharactersInRange:replaceRange withString:[NSString ellipsisString]];
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return croppedString;
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}
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else
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{
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return [[self copy] autorelease];
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}
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}
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@end
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