// // $Id$ // // SPArrayAdditions.m // sequel-pro // // Created by Jakob Egger on March 24, 2009 // // This program is free software; you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation; either version 2 of the License, or // (at your option) any later version. // // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // // You should have received a copy of the GNU General Public License // along with this program; if not, write to the Free Software // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA // // More info at <http://code.google.com/p/sequel-pro/> #import "SPArrayAdditions.h" #import "SPStringAdditions.h" @implementation NSArray (SPArrayAdditions) - (NSString *)componentsJoinedAndBacktickQuoted; /* * This method quotes all elements with backticks and then joins them with * commas. Use it for field lists as in "SELECT (...) FROM somewhere" */ { NSString *result = [NSString string]; for (NSString *component in self) { if ([result length]) result = [result stringByAppendingString: @","]; result = [result stringByAppendingString: [component backtickQuotedString] ]; } return result; } - (NSArray *)subarrayWithIndexes:(NSIndexSet *)indexes { NSMutableArray *subArray = [NSMutableArray arrayWithCapacity:[indexes count]]; unsigned count = [self count]; unsigned index = [indexes firstIndex]; while ( index != NSNotFound ) { if ( index < count ) [subArray addObject: [self objectAtIndex: index]]; index = [indexes indexGreaterThanIndex: index]; } return subArray; } @end