root/tags/2D16/Importer/GetMetadataForFile.m

#include <AvailabilityMacros.h>

#include <CoreFoundation/CoreFoundation.h>
#include <CoreServices/CoreServices.h> 
#import <Foundation/Foundation.h>

Boolean GetMetadataForFile( void *thisInterface, CFMutableDictionaryRef attributes, CFStringRef contentTypeUTI, CFStringRef pathToFile ) {
        NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];

        NSMutableDictionary *returnDict = (NSMutableDictionary *) attributes;
        NSURL *file = [NSURL fileURLWithPath:(NSString *) pathToFile];
        NSString *title = [[(NSString *) pathToFile lastPathComponent] stringByDeletingPathExtension];

        // Set title
        [returnDict setObject:title forKey:(NSString *) kMDItemTitle];

        NSError *error = nil;
    NSXMLDocument *transcript = [[[NSXMLDocument alloc] initWithContentsOfURL:file options:NSXMLDocumentTidyXML error:&error] autorelease];

        // Get date started
    NSDate *dateStarted = nil;
        NSArray *xpathResult = [transcript nodesForXPath:@"/log[1]/@began" error:&error];

        if( ! [xpathResult count] )
                xpathResult = [transcript nodesForXPath:@"/log[1]/envelope[1]/message[1]/@received" error:&error];

        if( [xpathResult count] ) {
                dateStarted = [NSDate dateWithString:[[xpathResult objectAtIndex:0] stringValue]];
                [returnDict setObject:dateStarted forKey:(NSString *) kMDItemContentCreationDate];
        }

        // Get date of last message
        NSDate *lastMessageDate = nil;

        xpathResult = [transcript nodesForXPath:@"/log[1]/envelope[last()]/message[last()]/@received" error:&error];
        if( [xpathResult count] ) {
                lastMessageDate = [NSDate dateWithString:[[xpathResult objectAtIndex:0] stringValue]];
                [returnDict setObject:lastMessageDate forKey:(NSString *) kMDItemContentModificationDate];
                [returnDict setObject:lastMessageDate forKey:(NSString *) kMDItemLastUsedDate];
        }

        if( lastMessageDate && dateStarted ) {
                // Set Duration
                NSTimeInterval logDuration = [lastMessageDate timeIntervalSinceDate:dateStarted];
                [returnDict setObject:[NSNumber numberWithInt:logDuration] forKey:(NSString *) kMDItemDurationSeconds];

                // Set Coverage
                NSDateFormatter *formatter = [[[NSDateFormatter alloc] initWithDateFormat:@"" allowNaturalLanguage:NO] autorelease];
                [formatter setFormatterBehavior:NSDateFormatterBehavior10_4];
                [formatter setDateStyle:NSDateFormatterShortStyle];
                [formatter setTimeStyle:NSDateFormatterShortStyle];

                NSString *coverageWording = [NSString stringWithFormat:@"%@ - %@", [formatter stringFromDate:dateStarted], [formatter stringFromDate:lastMessageDate]];
                [returnDict setObject:coverageWording forKey:(NSString *) kMDItemCoverage];
        }

        // Get Where From
        xpathResult = [transcript nodesForXPath:@"/log[1]/@source" error:&error];
        NSString *fromURL = nil;
        if( [xpathResult count] ) {
                fromURL = [[xpathResult objectAtIndex:0] stringValue];
                [returnDict setObject:fromURL forKey:(NSString *) kMDItemWhereFroms];
        }

        // Get Participants
        NSMutableArray *participants = [NSMutableArray array];
        NSArray *participantNodes = [transcript nodesForXPath:@"/log[1]/envelope/sender" error:&error];
        NSEnumerator *enumerator = [participantNodes objectEnumerator];
        NSXMLNode *participantNode = nil;

        while( ( participantNode = [enumerator nextObject] ) ) {
                NSString *nickname = [participantNode stringValue];
                if( ! [participants containsObject:nickname] )
                        [participants addObject:nickname];
        }

        [returnDict setObject:participants forKey:(NSString *) kMDItemContributors];

        // Set a more useful Content Summary
        xpathResult = [transcript nodesForXPath:@"/log[1]/envelope/message/text()" error:&error];
        NSString *textSummaryClipping = [xpathResult componentsJoinedByString:@" "];
        [returnDict setObject:textSummaryClipping forKey:(NSString *) kMDItemTextContent];

        // Now the stuff that doesn't change
        [returnDict setObject:[NSArray arrayWithObject:@"transcript"] forKey:(NSString *) kMDItemKind];
        [returnDict setObject:[NSArray arrayWithObject:@"Colloquy"] forKey:(NSString *) kMDItemCreator];

        [pool release];

    return TRUE;
}