2014/2/23 Cocoa #23

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2014/2/23 Cocoa #23

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@interface NSString ( CocoaStudy23 )-(id) initWithData:(NSData *)data IANACharSetName:(NSString *)charSetName;@end

@implementation NSString ( CocoaStudy23 )-(id) initWithData:(NSData *)data IANACharSetName:(NSString *)charSetName{ CFStringEncoding cfCharset = CFStringConvertIANACharSetNameToEncoding((CFStringRef)charSetName); NSStringEncoding nsCharset = CFStringConvertEncodingToNSStringEncoding(cfCharset); return [self initWithData:data encoding:nsCharset];}@end

@implementation AppController

-(void) awakeFromNib{

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UInt8 cString[] = { 0x82, 0xA9, 0x82, 0xC8, 0x8A, 0xBF, 0x95, 0x5C, 0 };

NSData *streamedString = [NSData dataWithBytes:(void *)&cString length:sizeof cString]; NSString *testString = [[NSString alloc]initWithData:streamedString IANACharSetName:@"Shift-JIS"]; NSLog( testString );}

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2014/2/23 Cocoa #23

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-(void) awakeFromNib{ NSString *targetFile = @"/Users/msyk/Documents/apple-reg.pdf"; NSString *prefMIMEType = [self preferedMIMETypeFromFile:targetFile]; NSLog( prefMIMEType );

targetFile = @"file.xls"; prefMIMEType = [self preferedMIMETypeFromFile:targetFile]; NSLog( prefMIMEType );}

- (NSString *)preferedMIMETypeFromFile:(NSString *)targetFile{ NSString *currentFileExtension = [targetFile pathExtension]; CFStringRef uti = UTTypeCreatePreferredIdentifierForTag( kUTTagClassFilenameExtension, (CFStringRef)currentFileExtension, NULL); CFStringRef prefferdMIMEType = UTTypeCopyPreferredTagWithClass(uti, kUTTagClassMIMEType); return (NSString *)prefferdMIMEType;}

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- (NSString *)preferedMIMETypeFromFile:(NSString *)targetFile{ FSRef ref; FSPathMakeRef ((unsigned char*)[targetFile fileSystemRepresentation], &ref, NULL); CFDictionaryRef values = NULL; CFStringRef attrs[] = { kLSItemContentType, kLSItemExtension, kLSItemRoleHandlerDisplayName }; CFStringRef prefferdMIMEType = NULL; CFArrayRef attrNames = CFArrayCreate(NULL, (const void **)attrs, 3 , NULL); if ( LSCopyItemAttributes(&ref, kLSRolesAll, attrNames, &values) == noErr ) { CFTypeRef uti = CFDictionaryGetValue(values, kLSItemContentType); CFStringRef extInfo = CFDictionaryGetValue(values, kLSItemExtension); CFStringRef appInfo = CFDictionaryGetValue(values, kLSItemRoleHandlerDisplayName); NSLog ( @"%@ -> %@ -> %@", uti, extInfo, appInfo ); prefferdMIMEType = UTTypeCopyPreferredTagWithClass( uti, kUTTagClassMIMEType ); } if ( prefferdMIMEType == nil ) { /* Your Own Codes */ } return (NSString *)prefferdMIMEType;}

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struct LSItemInfoRecord {

LSItemInfoFlags flags; //調べた項目に対するフラグ情報。ビットごとに意味があるが調べるには以下の表の定義定数を使う

OSType filetype; //ファイルタイプ

OSType creator; //クリエイタ

CFStringRef extension; //ファイルの拡張子を示すCFStringへの参照（使用後のリリース必要）

CFStringRef iconFileName; //（未使用）

LSKindID kindID; //（未使用）

};

typedef struct LSItemInfoRecord LSItemInfoRecord;

2014/2/23 Cocoa #23

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