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TLExportController.m
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TLExportController.m
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//
// TLExportController.m
// Mercatalog
//
// Created by Nathan Vander Wilt on 12/17/08.
// Copyright 2008 __MyCompanyName__. All rights reserved.
//
#import "TLExportController.h"
#import "TLPhoto.h"
#import "TLLocation.h"
#import "TLTimestamp.h"
#import "TLCocoaToolbag.h"
NSString* const TLExportKMZType = @"com.google.earth.kmz";
@implementation TLExportController
@synthesize photos;
- (NSMapTable*)namesForPhotos:(NSSet*)thePhotos inDirectory:(NSURL*)folder {
(void)folder;
NSMutableSet* existingNames = [NSMutableSet set];
NSArray* directoryContents = [[NSFileManager defaultManager] contentsOfDirectoryAtPath:[folder path]
error:NULL];
for (NSString* file in directoryContents) {
NSString* fileExtension = [file pathExtension];
if ([fileExtension isEqualToString:@"jpg"] || [fileExtension isEqualToString:@"JPG"]) {
NSString* name = [[file lastPathComponent] stringByDeletingPathExtension];
[existingNames addObject:name];
}
}
NSMapTable* photoNames = [NSMapTable mapTableWithStrongToStrongObjects];
for (TLPhoto* photo in thePhotos) {
NSString* originalName = [[[photo path] lastPathComponent] stringByDeletingPathExtension];
NSString* proposedName = originalName;
NSUInteger count = 0;
const NSUInteger maxTries = 1000000;
while ([existingNames containsObject:proposedName] && count < maxTries) {
++count;
proposedName = [originalName stringByAppendingFormat:@"-%lu", (long unsigned)count];
}
NSString* finalName = [proposedName stringByAppendingPathExtension:@"jpg"];
[photoNames setObject:finalName forKey:photo];
}
return photoNames;
}
- (void)doExportToFolder:(NSDictionary*)exportInfo {
NSMapTable* photoNames = [exportInfo objectForKey:@"photoNames"];
NSURL* folder = [exportInfo objectForKey:@"folder"];
for (TLPhoto* photo in photoNames) {
NSAutoreleasePool* looPPool = [NSAutoreleasePool new];
NSString* photoFilename = [photoNames objectForKey:photo];
NSString* fullPath = [[folder path] stringByAppendingPathComponent:photoFilename];
(void)[photo saveToPath:fullPath
size:0
withMetadata:TLPhotoMetadataFull
error:NULL];
[looPPool drain];
}
}
- (NSArray*)exportToFolder:(NSURL*)folder error:(NSError**)err {
(void)err;
NSMapTable* photoNames = [self namesForPhotos:[self photos] inDirectory:folder];
NSDictionary* exportInfo = [NSDictionary dictionaryWithObjectsAndKeys:
photoNames, @"photoNames", folder, @"folder", nil];
[self performSelector:@selector(doExportToFolder:) withObject:exportInfo afterDelay:0.1];
return TLNSMapTableAllObjects(photoNames);
}
#pragma mark KMZ export
static NSString* const TLKMZHeader = (@"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
@"<kml xmlns=\"http://www.opengis.net/kml/2.2\"><Document>\n");
static NSString* const TLKMZFooter = @"</Document></kml>";
static NSString* const TLKMZPlacemarkFormat = (@"<Placemark>"
@"<Point>%S</Point>" // coordinates tag
@"<TimeStamp><when>%S</when></TimeStamp>" // ISO 8601
@"<StyleMap>"
@"<Pair><key>normal</key>%S</Pair>" // style tag
@"<Pair><key>highlight</key>%S</Pair>" // style tag
@"</StyleMap>"
@"<description><![CDATA[%S]]></description>"
@"</Placemark>\n");
static NSString* const TLKMZCoordinatesFormat = @"<coordinates>%.6f,%.6f</coordinates>"; // lon, lat
static NSString* const TLKMZCoordinatesAltitudeFormat = @"<coordinates>%.6f,%.6f,%.2f</coordinates>"; // lon, lat, alt
static NSString* const TLKMZStyleFormat = (@"<Style>"
@"<IconStyle>"
@"<scale>%.2f</scale>"
@"<Icon><href>%S</href></Icon>"
@"</IconStyle>"
@"<BalloonStyle>"
@"<text>$[description]</text>"
@"</BalloonStyle>"
@"</Style>");
static NSString* const TLKMZDescriptionFormat = @"<img src=\"%S\"/>";
- (NSString*)exportKMZInfoForPhoto:(TLPhoto*)photo
intoDirectory:(NSString*)directory
error:(NSError**)err
{
NSString* basePhotoName = [NSString stringWithFormat:@"%lu", [photo uniqueID]];
const NSUInteger iconSize = 64;
const NSUInteger mediumSize = 400;
// export photos
NSError* internalError = nil;
NSString* iconFile = [[basePhotoName stringByAppendingString:@"-icon"] stringByAppendingPathExtension:@"jpg"];
NSString* iconFullPath = [directory stringByAppendingPathComponent:iconFile];
(void)[photo saveToPath:iconFullPath
size:iconSize
withMetadata:TLPhotoMetadataNone
error:&internalError];
if (internalError) {
if (err) *err = internalError;
return nil;
}
NSString* mediumFile = [[basePhotoName stringByAppendingString:@"-medium"] stringByAppendingPathExtension:@"jpg"];
NSString* mediumFullPath = [directory stringByAppendingPathComponent:mediumFile];
(void)[photo saveToPath:mediumFullPath
size:mediumSize
withMetadata:TLPhotoMetadataNone
error:&internalError];
if (internalError) {
if (err) *err = internalError;
return nil;
}
// generate KMZ reference
NSString* coordinatesTag = nil;
if ([[photo location] altitude] == TLCoordinateAltitudeUnknown) {
TLCoordinate coord = [[photo location] coordinate];
coordinatesTag = [NSString stringWithFormat:TLKMZCoordinatesFormat, coord.lon, coord.lat];
}
else {
TLCoordinate coord = [[photo location] coordinate];
TLCoordinateAltitude altitude = [[photo location] altitude];
coordinatesTag = [NSString stringWithFormat:TLKMZCoordinatesAltitudeFormat,
coord.lon, coord.lat, altitude];
}
NSDateFormatter* sISO8601 = [[NSDateFormatter new] autorelease];
[sISO8601 setTimeStyle:NSDateFormatterFullStyle];
[sISO8601 setDateFormat:@"yyyy-MM-dd'T'HH:mm:ss'Z'"];
NSString* timeStamp = [sISO8601 stringFromDate:[[photo timestamp] time]];
NSString* normalStyle = [NSString stringWithFormat:TLKMZStyleFormat,
1.0, [iconFile cStringUsingEncoding:NSUTF16StringEncoding]];
NSString* highlightStyle = [NSString stringWithFormat:TLKMZStyleFormat,
1.1, [iconFile cStringUsingEncoding:NSUTF16StringEncoding]];
NSString* description = [NSString stringWithFormat:TLKMZDescriptionFormat,
[mediumFile cStringUsingEncoding:NSUTF16StringEncoding]];
NSString* photoPlacemark = [NSString stringWithFormat:TLKMZPlacemarkFormat,
[coordinatesTag cStringUsingEncoding:NSUTF16StringEncoding],
[timeStamp cStringUsingEncoding:NSUTF16StringEncoding],
[normalStyle cStringUsingEncoding:NSUTF16StringEncoding],
[highlightStyle cStringUsingEncoding:NSUTF16StringEncoding],
[description cStringUsingEncoding:NSUTF16StringEncoding]];
//printf("%s\n", [photoPlacemark UTF8String]);
return photoPlacemark;
}
- (BOOL)exportToKMZ:(NSURL*)kmzFile error:(NSError**)err {
// export goes in temporary folder first
NSString* tempFolder = TLFileTemporaryPathFromPattern(@"com.calftrail.mercatalog.kmz-export-XXXXX");
if (!tempFolder) {
if (err) *err = [NSError errorWithDomain:NSCocoaErrorDomain code:NSFileWriteUnknownError userInfo:nil];
return NO;
}
NSError* internalError = nil;
(void)[[NSFileManager defaultManager] createDirectoryAtPath:tempFolder
withIntermediateDirectories:NO
attributes:nil
error:&internalError];
if (internalError) {
if (err) *err = internalError;
return NO;
}
NSMutableString* kmzString = [NSMutableString string];
[kmzString appendString:TLKMZHeader];
for (TLPhoto* photo in [self photos]) {
NSString* photoInfo = [self exportKMZInfoForPhoto:photo intoDirectory:tempFolder error:&internalError];
if (internalError) {
if (err) *err = internalError;
return NO;
}
[kmzString appendString:photoInfo];
}
[kmzString appendString:TLKMZFooter];
NSString* kmlPath = [tempFolder stringByAppendingPathComponent:@"doc.kml"];
(void)[kmzString writeToFile:kmlPath atomically:YES encoding:NSUTF8StringEncoding error:&internalError];
if (!internalError) {
(void)TLFileZip(tempFolder, [kmzFile path], &internalError);
}
(void)[[NSFileManager defaultManager] removeItemAtPath:tempFolder error:NULL];
if (internalError) {
if (err) *err = internalError;
return NO;
}
return YES;
}
@end