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//
// KSWebLocation.m
//
// Copyright (c) 2007-2011, Mike Abdullah, Dan Wood and Karelia Software
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL MIKE ABDULLAH, DAN WOOD OR KARELIA SOFTWARE BE LIABLE FOR ANY
// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//


#import "KSWebLocation.h"

#import "KSURLFormatter.h"


@implementation KSWebLocation

+ (id)webLocationWithURL:(NSURL *)URL;
{
    return [self webLocationWithURL:URL title:nil];
}

+ (id)webLocationWithURL:(NSURL *)URL title:(NSString *)title
{
return [[[self alloc] initWithURL:URL title:title] autorelease];
}

#pragma mark Init & Dealloc

- (id)initWithURL:(NSURL *)URL title:(NSString *)name
{
NSParameterAssert(URL);

if ((self = [super init]))
{
_URL = [URL copy];
_title = [name copy];
}

return self;
}

- (id)initWithURL:(NSURL *)URL;
{
    return [self initWithURL:URL title:nil];
}

- (id)init
{
return [self initWithURL:nil title:nil];
}

- (void)dealloc
{
[_URL release];
[_title release];

[super dealloc];
}

#pragma mark Accessors

- (NSURL *)URL { return _URL; }

- (NSString *)title { return _title; }

- (NSString *)description;
{
    return [NSString stringWithFormat:
            @"%@ %@ %@",
            [super description],
            [[self URL] absoluteString],
            [self title]];
}

#pragma mark Equality

- (NSUInteger)hash
{
NSUInteger result = [[self URL] hash] | [[self title] hash];
return result;
}

- (BOOL)isEqual:(id)anObject
{
if (self == anObject)
{
return YES;
}
else if ([anObject isKindOfClass:[KSWebLocation class]])
{
return [self isEqualToWebLocation:anObject];
}
else
{
return NO;
}
}

- (BOOL)isEqualToWebLocation:(KSWebLocation *)aWebLocation
{
BOOL result = [[aWebLocation URL] isEqual:[self URL]] && [[aWebLocation title] isEqualToString:[self title]];
return result;
}

#pragma mark Copying

- (id)copyWithZone:(NSZone *)zone
{
// KSWebLocations are effectively immutable (could add a mutable subclass if needed in the future) so retain
return [self retain];
}

#pragma mark Archiving

- (void)encodeWithCoder:(NSCoder *)encoder
{
[encoder encodeObject:[self URL] forKey:@"URL"];
[encoder encodeObject:[self title] forKey:@"name"];
}

- (id)initWithCoder:(NSCoder *)decoder
{
if ((self = [super init]))
{
_URL = [[decoder decodeObjectForKey:@"URL"] retain];
_title = [[decoder decodeObjectForKey:@"name"] retain];
}

return self;
}

#pragma mark Support

// Pass in nil for aName if we want to use ID
+ (NSData *)readFromResourceFileAtPath:(NSString *)aPath type:(ResType) aType named:(NSString *)aName id:(NSInteger)anID
{
ResFileRefNum fileRef = 0;
NSData *result = nil;
@try
{
FSRef theFSRef;
if (noErr == FSPathMakeRef((const UInt8 *)[aPath UTF8String], &theFSRef, NULL ))
{
fileRef = FSOpenResFile(&theFSRef, fsRdPerm);
if (noErr == ResError())
{
Handle theResHandle = NULL;
ResFileRefNum thePreviousRefNum = CurResFile(); // save current resource
Str255 thePName;

UseResFile(fileRef); // set this resource to be current

if (noErr == ResError())
{
if (aName) // use name
{
Str255 pString;
// Create pascal string -- assume MacRoman encoding for resource names?
BOOL success = CFStringGetPascalString((CFStringRef)aName,
pString,
[aName length],
kCFStringEncodingMacRomanLatin1);
if (success)
{
theResHandle = Get1NamedResource( aType, thePName );
}
}
else // use ID
{
theResHandle = Get1Resource( aType, anID );
}

if (theResHandle && noErr == ResError())
{
// Wow, this is a trip down memory lane for Dan!
HLock(theResHandle);
result = [NSData dataWithBytes:*theResHandle length:GetHandleSize(theResHandle)];
HUnlock(theResHandle);
ReleaseResource(theResHandle);
}
}
UseResFile( thePreviousRefNum ); // reset back to resource previously set
}
}
}
@finally
{
if( fileRef > 0)
{
CloseResFile(fileRef);
}
}
return result;
}

@end


#pragma mark -


@implementation KSWebLocation (WeblocFiles)

+ (id)webLocationWithContentsOfWeblocFile:(NSURL *)weblocURL
{
return [[[self alloc] initWithContentsOfWeblocFile:weblocURL] autorelease];
}

- (id)initWithContentsOfWeblocFile:(NSURL *)weblocURL
{
NSString *weblocPath = [weblocURL path];

// Use the Carbon Resource Manager to read 'url ' resource #256.
// String sems to be pre ASCII, with 2-bytes converted to % escapes
NSData *urlData = [[self class] readFromResourceFileAtPath:weblocPath
                                                          type:'url '
                                                         named:nil
                                                            id:256];

NSString *URLString = [[NSString alloc] initWithData:urlData encoding:NSASCIIStringEncoding];
NSURL *URL = [KSURLFormatter URLFromString:URLString];
    [URLString release];


// Use the Carbon Resource Manager to read 'urln' resource #256.
// empirically, this seems to be UTF8 encoded.
NSData *nameData = [[self class] readFromResourceFileAtPath:weblocPath
                                                           type:'urln'
                                                          named:nil
                                                             id:256];

NSString *nameString = [[NSString alloc] initWithData:nameData
                                                 encoding:NSUTF8StringEncoding];

self = [self initWithURL:URL title:nameString];
    
    [nameString release];
    return self;
}

@end
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