source/browser/BSThreadListUpdateTask.m

//
//  BSThreadListUpdateTask.m
//  BathyScaphe
//
//  Created by Hori,Masaki on 06/03/29.
//  Copyright 2006 BathyScaphe Project. All rights reserved.
//

#import "BSThreadListUpdateTask.h"
#import "BSDBThreadList.h"
#import "BoardListItem.h"
#import "DatabaseManager.h"
#import "AppDefaults.h"

NSString *BSThreadListUpdateTaskDidFinishNotification = @"BSThreadListUpdateTaskDidFinishNotification";

@implementation BSThreadListUpdateTask

+ (id)taskWithBSDBThreadList:(BSDBThreadList *)threadList
{
        return [[[[self class] alloc] initWithBSDBThreadList:threadList] autorelease];
}
- (id)initWithBSDBThreadList:(BSDBThreadList *)threadList
{
        if(self = [super init]) {
                target = threadList; //[threadList retain];
                progress = YES;
                userCanceled = NO;
                
                bbsName = [[[target boardListItem] representName] copy];
        }
        
        return self;
}
- (void)dealloc
{
        [cursor release];
        
        [super dealloc];
}

- (id) identifier
{
        return [NSValue valueWithPointer:self];
}

- (NSString *) title
{
        return bbsName;
}
- (NSString *) messageInProgress
{
        return [NSString stringWithFormat:
                NSLocalizedStringFromTable(@"Updating Thread(%@)", @"ThreadsList", @""),
                bbsName];
}

- (IBAction) cancel : (id) sender
{
        userCanceled = YES;
        target = nil;
}

#pragma mark-
/*
static inline NSArray *componentsSeparatedByWhiteSpace(NSString *string)
{
        NSMutableArray *result = [NSMutableArray array];
        NSScanner *s = [NSScanner scannerWithString : string];
        NSCharacterSet *cs = [NSCharacterSet whitespaceCharacterSet];
        NSString *str;
        
        while ([s scanUpToCharactersFromSet : cs intoString : &str]) {
                [result addObject : str];
        }
        
        if ([result count] == 0) {
                return nil;
        }
        
        return result;
}
static inline NSString *whereClauseFromSearchString(NSString *searchString)
{
        NSMutableString *clause;
        NSArray *searchs;
        NSEnumerator *searchsEnum;
        NSString *token;
        
        NSString *p = @"";
        
        searchs = componentsSeparatedByWhiteSpace(searchString);
        
        if (!searchs || [searchs count] == 0) {
                return nil;
        }
        
        clause = [NSMutableString stringWithFormat : @" WHERE "];
        
        searchsEnum = [searchs objectEnumerator];
        while (token = [searchsEnum nextObject]) {
                if ([token hasPrefix : @"!"]) {
                        if ([token length] == 1) continue;
                        
                        [clause appendFormat : @"%@NOT %@ LIKE '%%%@%%' ",
                                p, ThreadNameColumn, [token substringFromIndex : 1]];
                } else {
                        [clause appendFormat : @"%@%@ LIKE '%%%@%%' ",
                                p, ThreadNameColumn, token];
                }
                p = @"AND ";
        }
        
        return clause;
}
*/
- (NSString *) sqlForList
{
        NSString *targetTable = [[target boardListItem] query];
        NSMutableString *sql;
//      NSString *searchCondition;
        
        sql = [NSMutableString stringWithFormat : @"SELECT * FROM (%@) ",targetTable];
/*      
        if ([target searchString] && ![[target searchString] isEmpty]) {
                searchCondition = whereClauseFromSearchString([target searchString]);
                if (searchCondition) {
                        [sql appendString : searchCondition];
                }
        }
*/      
        return sql;
}
- (id)cursor
{
        return cursor;
}
- (void) setCursor:(id)new
{
        id temp = cursor;
        cursor = [new retain];
        [temp release];
}
- (void) doExecuteWithLayout : (CMRThreadLayout *) layout
{
        id <SQLiteMutableCursor> result = nil;
                
        SQLiteDB *db = [[DatabaseManager defaultManager] databaseForCurrentThread];
        NSString *sql;
        
        UTILAssertNotNil(db);
        
        sql = [self sqlForList];
        if(userCanceled) goto final;
        result = [db cursorForSQL : sql];
        if ([db lastErrorID] != 0) {
                NSLog(@"sql error on %s line %d.\n\tReason   : %@", __FILE__, __LINE__, [db lastError]);
                result = nil;
        }       
        
final:
        [self setCursor:result];
        [self postTaskDidFinishNotification];
}

@end

@implementation BSThreadListUpdateTask(Notification)

- (void) postTaskDidFinishNotification
{
        NSNotificationCenter    *nc_;
                
        nc_ = [NSNotificationCenter defaultCenter];
        [nc_ postNotificationName : BSThreadListUpdateTaskDidFinishNotification
                                           object : self];
}
@end

@implementation NSString(BSThreadListUpdateTaskAddition)
- (NSComparisonResult)numericCompare:(NSString *)string
{
        return [self compare:string options:NSNumericSearch];
}
@end

@implementation NSNumber(BSThreadListUpdateTaskAddition)
- (NSComparisonResult)numericCompare:(id)obj
{
        return [self compare:obj];
}
@end
@implementation NSDate(BSThreadListUpdateTaskAddition)
- (NSComparisonResult)numericCompare:(id)obj
{
        return [self compare:obj];
}
@end