GMFinderInfo.m

// ================================================================
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//
//  GMFinderInfo.m
//  Fuse4X
//
//  Created by ted on 12/29/07.
//
#import "GMFinderInfo.h"

// All fields should be in network order. See CoreServices/CarbonCore/Finder.h
// for details on what flags and extendedFlags can be.
#pragma pack(push, 1)
typedef struct {
  union {
    struct {
      UInt32 type;
      UInt32 creator;
    } fileInfo;
    struct {
      UInt16 y1;  // Top left of window.
      UInt16 x1;
      UInt16 y2;  // Bottom right of window.
      UInt16 x2;
    } dirInfo;
  } fileOrDirInfo;
  UInt16 flags;  // Finder flags.
  struct {
    UInt16 y;
    UInt16 x;
  } location;
  UInt16 reserved;
} GenericFinderInfo;

typedef struct {
  UInt32 ignored0;
  UInt32 ignored1;
  UInt16 extendedFlags;  // Extended finder flags.
  UInt16 ignored3;
  UInt32 ignored4;
} GenericExtendedFinderInfo;

typedef struct {
  GenericFinderInfo base;
  GenericExtendedFinderInfo extended;
} PackedFinderInfo;
#pragma pack(pop)

@implementation GMFinderInfo

+ (GMFinderInfo *)finderInfo {
  return [[[GMFinderInfo alloc] init] autorelease];
}

- (id)init {
  if ((self = [super init])) {
    flags_ = 0;
    extendedFlags_ = 0;
    typeCode_ = 0;
    creatorCode_ = 0;
  }
  return self;
}

- (void)setFlags:(UInt16)flags {
  flags_ = flags;
}
- (void)setExtendedFlags:(UInt16)extendedFlags {
  extendedFlags_ = extendedFlags;
}
- (void)setTypeCode:(OSType)typeCode {
  typeCode_ = typeCode;
}
- (void)setCreatorCode:(OSType)creatorCode {
  creatorCode_ = creatorCode;
}

- (NSData *)data {
  PackedFinderInfo info;
  assert(sizeof(info) == 32);
  memset(&info, 0, sizeof(info));
  info.base.fileOrDirInfo.fileInfo.type = htonl(typeCode_);
  info.base.fileOrDirInfo.fileInfo.creator = htonl(creatorCode_);
  info.base.flags = htons(flags_);
  info.extended.extendedFlags = htons(extendedFlags_);
  return [NSData dataWithBytes:&info length:sizeof(info)];
}

+ (NSData *)finderInfoWithFinderFlags:(UInt16)flags {
  return [GMFinderInfo finderInfoWithFinderFlags:flags
                                        typeCode:0
                                     creatorCode:0];
}

+ (NSData *)finderInfoWithFinderFlags:(UInt16)flags
                             typeCode:(OSType)typeCode
                          creatorCode:(OSType)creatorCode {
  GMFinderInfo* info = [GMFinderInfo finderInfo];
  [info setFlags:flags];
  [info setTypeCode:typeCode];
  [info setCreatorCode:creatorCode];
  return [info data];
}

@end