//---------------------------------------------------------------------------------------
// Copyright (c) 2001-2012 by PDFTron Systems Inc. All Rights Reserved.
// Consult legal.txt regarding legal and license information.
//---------------------------------------------------------------------------------------

#import <OBJC/PDFNetOBJC.h>
#import <Foundation/Foundation.h>

void ProcessElements(ElementReader *reader) 
{
    Element *element;
	for (element=[reader Next]; element != NULL; element = [reader Next]) 	// Read page contents
	{
		switch ([element GetType])
		{
		case e_path:						// Process path data...
			{
				PathData *data = [element GetPathData];
				NSArray *points = [data GetPoints];
			}
 			break;
		case e_text_obj: 				// Process text strings...
			{
				NSData* nsdata = [element GetTextData];
                unsigned char* data = (unsigned char*)[nsdata bytes];
				printf("%s \n", data);
			}
			break;
		case e_form:				// Process form XObjects
			{
				[reader FormBegin]; 
                ProcessElements(reader);
				[reader End]; 
			}
			break; 
		}
	}
}

int main(int argc, char *argv[])
{
    NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
	int ret = 0;
	[PDFNet Initialize: 0];
	
	@try	// Extract text data from all pages in the document
	{
		NSLog(@"__________________________________________________");
		NSLog(@"Sample 1 - Extract text data from all pages in the document.");
		NSLog(@"Opening the input pdf...");

		PDFDoc *doc = [[[PDFDoc alloc] initWithFilepath: @"../../TestFiles/newsletter.pdf"] autorelease];
		[doc InitSecurityHandler];
		
		PageIterator *itr;
		ElementReader *page_reader = [[[ElementReader alloc] init] autorelease];

		for (itr = [doc GetPageIterator: 1]; [itr HasNext]; [itr Next])		//  Read every page
		{				
			[page_reader Begin: [itr Current]];
            ProcessElements(page_reader);
			[page_reader End];
		}

		NSLog(@"Done.");
	}
	@catch(NSException *e)
	{
		NSLog(@"%@", [e reason]);
		ret = 1;
	}
	
	[pool release];
    return ret;
}