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#include <CoreFoundation/CoreFoundation.h>
#include <CoreServices/CoreServices.h>
#include <Foundation/Foundation.h>
/* -----------------------------------------------------------------------------
Step 1
Set the UTI types the importer supports
Modify the CFBundleDocumentTypes entry in Info.plist to contain
an array of Uniform Type Identifiers (UTI) for the LSItemContentTypes
that your importer can handle
----------------------------------------------------------------------------- */
/* -----------------------------------------------------------------------------
Step 2
Implement the GetMetadataForFile function
Implement the GetMetadataForFile function below to scrape the relevant
metadata from your document and return it as a CFDictionary using standard keys
(defined in MDItem.h) whenever possible.
----------------------------------------------------------------------------- */
/* -----------------------------------------------------------------------------
Step 3 (optional)
If you have defined new attributes, update the schema.xml file
Edit the schema.xml file to include the metadata keys that your importer returns.
Add them to the <allattrs> and <displayattrs> elements.
Add any custom types that your importer requires to the <attributes> element
<attribute name="com_mycompany_metadatakey" type="CFString" multivalued="true"/>
----------------------------------------------------------------------------- */
/* -----------------------------------------------------------------------------
Get metadata attributes from file
This function's job is to extract useful information your file format supports
and return it as a dictionary
----------------------------------------------------------------------------- */
Boolean GetMetadataForFile(void* thisInterface,
CFMutableDictionaryRef attributes,
CFStringRef contentTypeUTI,
CFStringRef pathToFile)
{
/* Pull any available metadata from the file at the specified path */
/* Return the attribute keys and attribute values in the dict */
/* Return TRUE if successful, FALSE if there was no data provided */
Boolean success=NO;
NSString *theContent;
NSAutoreleasePool *pool;
// Don't assume that there is an autorelease pool around the calling of this function.
pool = [[NSAutoreleasePool alloc] init];
// load the document at the specified location
theContent=[[NSString alloc] initWithContentsOfFile:(NSString *)pathToFile
//usedEncoding:(NSStringEncoding *)NULL
encoding:NSUTF8StringEncoding
error:(NSError **)NULL];
if (theContent)
{
[(NSMutableDictionary *)attributes setObject:theContent
forKey:(NSString *)kMDItemTextContent];
// return YES so that the attributes are imported
success=YES;
// release the loaded document
[theContent release];
}
[pool release];
return success;
}
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