PDFA Conversion ​

// Init Methods
- (instancetype)initWithDocument:(CPDFDocument *)document {
  CPDFDocument *myDocument = document;
  [self convertToPDFA1a:myDocument];
  [self convertToPDFA1b:myDocument];
}

// Convert PDF to PDFA1a format
- (void)convertToPDFA1a:(CPDFDocument *)oldDocument {
  NSString *commandLineStr = @"";
  
    commandLineStr = [commandLineStr stringByAppendingString:@"-------------------------------------\n"];
    commandLineStr = [commandLineStr stringByAppendingString:@"Samples 1: Convert PDF to PDFA1a format\n"];
    
    // Get Sandbox path for saving the PDF File
    NSString *path = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents"];
    NSString *writeDirectoryPath = [NSString stringWithFormat:@"%@/%@", path, @"PDFA"];

    if (![[NSFileManager defaultManager] fileExistsAtPath:writeDirectoryPath])
        [[NSFileManager defaultManager] createDirectoryAtURL:[NSURL fileURLWithPath:writeDirectoryPath] withIntermediateDirectories:YES attributes:nil error:nil];
    NSString *writeFilePath = [NSString stringWithFormat:@"%@/%@.pdf",writeDirectoryPath,@"ConvertToPDFA1aTest"];
    
    // Save the document in the test PDF file
    NSURL *convertToPDFA1aURL = [NSURL fileURLWithPath:writeFilePath];
    [oldDocument writeToURL:convertToPDFA1aURL];
    
    // Create a new document for test PDF file
    CPDFDocument *document = [[CPDFDocument alloc] initWithURL:convertToPDFA1aURL];
    
    // Save as PDFA1a format
    [document writePDFAToURL:convertToPDFA1aURL withType:CPDFTypePDFA1a];
    
    commandLineStr = [commandLineStr stringByAppendingString:@"Done. Results saved in ConvertToPDFA1aTest.pdf\n\n"];
}

// Convert PDF to PDFA1b format
- (void)convertToPDFA1b:(CPDFDocument *)oldDocument {
  NSString *commandLineStr = @"";
  
    commandLineStr = [commandLineStr stringByAppendingString:@"-------------------------------------\n"];
    commandLineStr = [commandLineStr stringByAppendingString:@"Samples 2: Convert PDF to PDFA1b format\n"];
    
    // Get Sandbox path for saving the PDF File
    NSString *path = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents"];
    NSString *writeDirectoryPath = [NSString stringWithFormat:@"%@/%@", path, @"PDFA"];

    if (![[NSFileManager defaultManager] fileExistsAtPath:writeDirectoryPath])
        [[NSFileManager defaultManager] createDirectoryAtURL:[NSURL fileURLWithPath:writeDirectoryPath] withIntermediateDirectories:YES attributes:nil error:nil];
    NSString *writeFilePath = [NSString stringWithFormat:@"%@/%@.pdf",writeDirectoryPath,@"ConvertToPDFA1bTest"];
    
    // Save the document in the test PDF file
    NSURL *convertToPDFA1bURL = [NSURL fileURLWithPath:writeFilePath];
    [oldDocument writeToURL:convertToPDFA1bURL];
    
    // Create a new document for test PDF file
    CPDFDocument *document = [[CPDFDocument alloc] initWithURL:convertToPDFA1bURL];
    
    // Save as PDFA1b format
    [document writePDFAToURL:convertToPDFA1bURL withType:CPDFTypePDFA1a];
    
    commandLineStr = [commandLineStr stringByAppendingString:@"Done. Results saved in ConvertToPDFA1bTest.pdf\n\n"];
}