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/* FormatTester.m - this file is part of Cynthiune
*
* Copyright (C) 2003, 2004 Wolfgang Sourdeau
*
* Author: Wolfgang Sourdeau <wolfgang@contre.com>
*
* This file 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, or (at your option)
* any later version.
*
* This file 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; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#import <Foundation/NSArray.h>
#import <Foundation/NSPathUtilities.h>
#import <Foundation/NSString.h>
#import <Cynthiune/Format.h>
#import "FormatTester.h"
@implementation FormatTester : NSObject
+ (id) formatTester
{
static FormatTester *singleton = nil;
if (!singleton)
singleton = [self new];
return singleton;
}
- (id) init
{
if ((self = [super init]))
{
formatList = [NSMutableArray array];
extensionsList = [NSMutableArray array];
[formatList retain];
[extensionsList retain];
}
return self;
}
- (void) registerFormatClass: (Class) aClass
{
if ([aClass conformsToProtocol: @protocol(Format)])
{
[formatList addObject: aClass];
[extensionsList
addObjectsFromArray: [aClass acceptedFileExtensions]];
}
else
NSLog (@"Class '%@' not conform to 'Format' protocol...\n",
NSStringFromClass (aClass));
}
- (NSArray *) acceptedFileExtensions
{
return extensionsList;
}
- (Class) formatClassAtIndex: (unsigned int) formatNumber
{
Class formatClass;
if (formatNumber < [formatList count])
formatClass = [formatList objectAtIndex: formatNumber];
else
formatClass = Nil;
return formatClass;
}
- (BOOL) formatClass: (Class) formatClass
acceptsFileExtension: (NSString *) extension
{
unsigned int count, max;
BOOL result;
NSArray *extensions;
NSString *currentExtension;
result = NO;
if ([formatList containsObject: formatClass])
{
extensions = [formatClass acceptedFileExtensions];
max = [extensions count];
count = 0;
while (count < max && !result)
{
currentExtension = [extensions objectAtIndex: count];
result = ([extension caseInsensitiveCompare: currentExtension]
== NSOrderedSame);
count++;
}
}
return result;
}
- (Class) formatClassForFileExtension: (NSString *) extension
{
unsigned int count, max;
Class currentFormatClass, resultClass;
count = 0;
max = [formatList count];
resultClass = nil;
while (count < max && !resultClass)
{
currentFormatClass = [formatList objectAtIndex: count];
if ([self formatClass: currentFormatClass
acceptsFileExtension: extension])
resultClass = currentFormatClass;
count++;
}
return resultClass;
}
- (int) formatNumberForFile: (NSString *) file
{
Class testClass;
int formatNumber, count;
formatNumber = -1;
count = 0;
while (formatNumber == -1
&& count < [formatList count])
{
testClass = [formatList objectAtIndex: count];
if (([testClass canTestFileHeaders]
&& [testClass streamTestOpen: file])
|| [self formatClass: testClass
acceptsFileExtension: [file pathExtension]])
formatNumber = count;
else
count++;
}
return formatNumber;
}
- (Class) formatClassForFile: (NSString *) file
{
int formatNumber;
Class formatClass;
formatNumber = [self formatNumberForFile: file];
if (formatNumber > -1)
formatClass = [formatList objectAtIndex: formatNumber];
else
formatClass = Nil;
return formatClass;
}
- (BOOL) extensionIsSupported: (NSString *) extension
{
NSMutableArray *extensions;
NSString *currentExtension;
BOOL result;
unsigned int count, max;
result = NO;
extensions = [NSMutableArray arrayWithObjects: @"m3u", @"pls", @"cPls", nil];
[extensions addObjectsFromArray: extensionsList];
count = 0;
max = [extensions count];
while (!result && count < max)
{
currentExtension = [extensions objectAtIndex: count];
result = ([currentExtension caseInsensitiveCompare: extension]
== NSOrderedSame);
count++;
}
return result;
}
- (BOOL) fileIsPlaylist: (NSString *) filename
{
NSString *extension;
extension = [filename pathExtension];
return ([extension caseInsensitiveCompare: @"cPls"] == NSOrderedSame
|| [extension caseInsensitiveCompare: @"m3u"] == NSOrderedSame
|| [extension caseInsensitiveCompare: @"pls"] == NSOrderedSame);
}
@end
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