/*

    File:       GetMetadataForFile.c

    Version:    1.0

    Disclaimer: IMPORTANT:  This Apple software is supplied to you by Apple Computer, Inc.

                ("Apple") in consideration of your agreement to the following terms, and your

                use, installation, modification or redistribution of this Apple software

                constitutes acceptance of these terms.  If you do not agree with these terms,

                please do not use, install, modify or redistribute this Apple software.

                In consideration of your agreement to abide by the following terms, and subject

                to these terms, Apple grants you a personal, non-exclusive license, under Apple's

                copyrights in this original Apple software (the "Apple Software"), to use,

                reproduce, modify and redistribute the Apple Software, with or without

                modifications, in source and/or binary forms; provided that if you redistribute

                the Apple Software in its entirety and without modifications, you must retain

                this notice and the following text and disclaimers in all such redistributions of

                the Apple Software.  Neither the name, trademarks, service marks or logos of

                Apple Computer, Inc. may be used to endorse or promote products derived from the

                Apple Software without specific prior written permission from Apple.  Except as

                expressly stated in this notice, no other rights or licenses, express or implied,

                are granted by Apple herein, including but not limited to any patent rights that

                may be infringed by your derivative works or by other works in which the Apple

                Software may be incorporated.

                The Apple Software is provided by Apple on an "AS IS" basis.  APPLE MAKES NO

                WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED

                WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR

                PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE OR IN

                COMBINATION WITH YOUR PRODUCTS.

                IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR

                CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE

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                ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

    Copyright © 2005 Apple Computer, Inc., All Rights Reserved

 */

#include <CoreFoundation/CoreFoundation.h>

#include <CoreServices/CoreServices.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

   ----------------------------------------------------------------------------- */

static int get_debug_info(char *path, CFMutableDictionaryRef attributes);

Boolean GetMetadataForFile(void* thisInterface, 

               CFMutableDictionaryRef attributes, 

               CFStringRef contentTypeUTI,

               CFStringRef pathToFile)

{

    int ret = TRUE;

    char path[1024], uti[1024];

    if (   CFStringGetCString(pathToFile, path, sizeof(path), kCFStringEncodingUTF8) == 0

        || CFStringGetCString(contentTypeUTI, uti, sizeof(uti), kCFStringEncodingUTF8) == 0) {

        printf("failed to convert path or uti to a c-string.\n");

        return FALSE;

    }

    if (get_debug_info(path, attributes) != 0) {

        ret = FALSE;

    }

    return ret;

}

static int parse_line(char *buff, char *key, size_t keysz, char *value, size_t valsz);

int

get_debug_info(char *path, CFMutableDictionaryRef attributes)

{

    FILE *fp;

    char buff[1024], key[32], value[1024];

    CFStringRef cfvalue;

    fp = fopen(path, "r");

    if (fp == NULL) {

        return -1;

    }

    while ((fgets(buff, sizeof(buff), fp)) != NULL) {

        if (parse_line(buff, key, sizeof(key), value, sizeof(value)) != 0) {

            continue;

        }

        cfvalue = CFStringCreateWithCString(kCFAllocatorDefault, value, kCFStringEncodingUTF8);

        if (strcasecmp(key, "session") == 0) {

            CFDictionaryAddValue(attributes, CFSTR("com_apple_dbgSessionName"), cfvalue);

        } else if (strcasecmp(key, "radar") == 0) {

            CFDictionaryAddValue(attributes, CFSTR("com_apple_dbgRadarNumber"), cfvalue);

        } else if (strcasecmp(key, "keywords") == 0) {

            CFMutableArrayRef keywords;

            keywords = CFArrayCreateMutable(kCFAllocatorDefault, 1, &kCFTypeArrayCallBacks);

            CFArrayAppendValue(keywords, (void *)cfvalue);

            CFDictionaryAddValue(attributes, kMDItemKeywords, keywords);

            CFRelease(keywords);

        }

        CFRelease(cfvalue);

    }

    fclose(fp);

    CFShow(attributes);

    return 0;

}

static int 

parse_line(char *buff, char *key, size_t keysz, char *value, size_t valsz)

{

    int   len, copy_len;

    char *ptr;

    if (buff[0] == '#') {

        return -1;

    }

    len = strlen(buff);

    if (buff[len-1] == '\n') {

        buff[--len] = '\0';

    }

    ptr = strchr(buff, ':');

    if (ptr == NULL) {

        // a malformed line?

        return -1;

    }

    if ((ptr - buff) < keysz) {

        copy_len = (ptr - buff) + 1;

    } else {

        copy_len = keysz - 1;

    }

    strlcpy(key, buff, copy_len);

    ptr += 2;

    strlcpy(value, ptr, valsz);

    return 0;

}