demo1.cpp

These are precompiled demonstration programs of the Onix toolkit. They do not include the Onix tool

	} // while

	FindClose( filehandle );

	return 0;
}

// select_file
// -----------
//
// Presents a menu telling you about the current index and allows you
// to select a file to index and append to the current index.

void select_file()
{
	printf("\n\n\n");

	printf( "INDEX FILE\n");
	printf( "----------\n");
	printf( "\n");

	// Print out the index info

	printf( "Current Index: %s\n", IndexPath );

	if ( New_Index == true ) {
		printf( "Mode: Creating new index\n");
	} else {
		printf( "Mode: Adding to existing index\n");
	}

	if ( Store_Text == true ) {
		printf( "      Storing indexed text in the index\n");
	} else {
		printf( "      Storing reference to document in the index\n");
	}

	printf( "\n\n");

	printf( "Please type the path and name of the file you wish to index.\n");
	printf( "Be sure to include the extension of the file in the file's\n");
	printf( "name.  (i.e. c:\\my documents\\mytext.doc)\n");
	printf( "\n\n");

	fgets( Choice, 80, stdin);
	
	strcpy( (char*) FilePath, (char *) Choice );

	indexfile( (char*) FilePath );

	printf("\n\n\n");

}

// select_dir
// ----------
//
// Presents a menu telling you about the current index and allows you
// to select a directory to index.  All the files in the directory
// that end with .txt are indexed and appended to the current index.


void select_dir()
{
	printf("\n\n\n");

	printf( "INDEX DIRECTORY\n");
	printf( "---------------\n");
	printf( "\n");

	printf( "Current Index: %s\n", IndexPath );

	if ( New_Index == true ) {
		printf( "Mode: Creating new index\n");
	} else {
		printf( "Mode: Adding to existing index\n");
	}

	if ( Store_Text == true ) {
		printf( "      Storing indexed text in the index\n");
	} else {
		printf( "      Storing reference to document in the index\n");
	}

	if ( Recurse == true ) {
		printf( "      Index all sub-directories\n");
	} else {
		printf( "      Do not index sub-directories\n");
	}

	printf( "\n\n");

	printf( "Please type the path to the directory you wish to index.\n");
	printf( "This will only index files in that directory with an\n");
	printf( "extension of .txt and no other files.\n");
	printf( "\n");

	fgets( Choice, 80, stdin);
	
	strcpy( (char*) FilePath, (char*) Choice );

	scandir( (char*) FilePath );
}

// add_files
// ---------
//
// A general menu that allows you to specify how you will add new indexed
// files to the indexer.  

void add_files()
{
	pick = -1;	// Just a global we use to select our choice. By setting 
				// it to -1 we make sure we don't quit yet.

	

	if ( IndexPath[0] == 0 ) {
		printf ( "You must first select an index before indexing files.\n\n");
		return;
	}

	
	if ( State == inIndexing ) {
		printf("\nClosing and updating old index...\n");
		close_indexer();
		printf("Opening new index...\n");
		prepare_indexer();
	}
	else if ( State == inQuery ) {
		printf("\nEnding old retrieval session...\n");
		close_retrieval();
		printf("Opening new index...\n");
		prepare_indexer();
		State = inIndexing;
	}
	else if ( State == inNothing ) {
		printf("Opening new index...\n");	
		prepare_indexer();
		State = inIndexing;
	}


	while ( pick != 0 ) {
		printf("\n\n\n");

		printf( "INDEX FILES\n" );
		printf( "-----------\n" );
		printf( "\n");


		printf( "Current Index: %s\n", IndexPath );

		if ( New_Index == true ) {
			printf( "Mode: Creating new index\n");
		} else {
			printf( "Mode: Adding to existing index\n");
		}

		if ( Store_Text == true ) {
			printf( "      Storing indexed text in the index\n");
		} else {
			printf( "      Storing reference to document in the index\n");
		}

		printf( "\n\n");

		printf( "(1) Add a single file to the index\n");
		printf( "(2) Add all text files (.txt) in a directory to the index\n");
		printf( "(3) Add all text files in a directory and all sub-directories\n");
		printf( "   to the index\n");
		printf( "\n");
		printf( "(0) Quit\n");
		printf( "\n\n");

		fgets( Choice, 80, stdin);

		pick = atoi( Choice );

		switch ( pick ) {
		case 1:
			Recurse = false;
			select_file();
			break;

		case 2:
			Recurse = false;
			select_dir();
			break;

		case 3:
			Recurse = true;
			select_dir();
			break;

		default:
			break;
		}
	} // while

	// if we exit and were indexing, finish up the indexing session

	if ( State == inIndexing ) {
		printf("\nClosing and updating index...\n");
		close_indexer();
		State = inNothing;
	}
}

//------------------------------------------------------------------------------------
// Main Menu
//------------------------------------------------------------------------------------

// main_prompt
// -----------
//
// Basically our main menu.  The only thing to be aware of is that we only close
// the indexing session when we start searching or select a new index.  This means
// that merging isn't done immediately when we add new information to the index.
// This is the most efficient way to add information to the index.  Each indexing
// session is stored in an individual partition and you want to minimize the number
// of partitions in your index.  Onix does have a function call that optimizes the
// index, but you should still try to minimize the amount it needs to optimize.

void main_prompt()
{

	pick = -1;	// just a nice value that means nothing but keeps us in the loop

	while ( pick != 0 ) {

		printf("\n\n\n\n");

		printf( "SET INDEX\n" );
		printf( "---------\n" );
		printf( "\n" );
		
		// print index state information

		if ( IndexPath[0] == 0 ) {
			printf("No Current Index Selected\n");
		} else {
			printf( "Current Index: %s\n", IndexPath );

			if ( New_Index == true ) {
				printf( "Mode: Creating new index\n");
			} else {
				printf( "Mode: Adding to existing index\n");
			}

			if ( Store_Text == true ) {
				printf( "      Storing indexed text in the index\n");
			} else {
				printf( "      Storing reference to document in the index\n");
			}
		}

		printf( "\n\n" );
		printf( "(1) Select a new index that will be created\n");
		printf( "(2) Select an existing index to open\n");
		printf( "\n" );
		printf( "(3) Add files or directories to this index\n");
		printf( "\n" );
		printf( "(4) Search this index\n");
		printf( "\n" );
		printf( "(0) Quit\n");
		printf( "\n\n");

		fgets( Choice, 80, stdin);

		pick = atoi( Choice );

		switch ( pick ) {
		case 1:
			// Create New Index

			printf("\n\n\n");
			printf("Please enter the path and filename for the index you\n");
			printf("wish to create.  If there is an index of the same\n");
			printf("name and path it will be overwritten.\n");
			printf("\n");
			printf("Note that the index will not be created until you index\n");
			printf("some files.\n");
			printf("\n");

			// New_Index tells us that we are creating a new index rather than
			// appending.  See prepare_indexer for more information

			New_Index = true;

		
			fgets( Choice, 80, stdin);	// get the pathname
			
			// If there was a previously opened index we must close it.  
			// Note that this merges all the previous indexing info into the
			// general index.

			
			strcpy( (char*) IndexPath, (char*) Choice );

			if ( theStatus < 0 ) {
				IndexPath[0] = 0;
				State = inNothing;
			}

			printf("\n\n");
			break;

		case 2:
			// Open New Index

			printf("\n\n\n");
			printf("Please enter the path and filename for the index you\n");
			printf("wish to add additional files to.\n");
			printf("\n");


			// New_Index tells us that we are creating a new index rather than
			// appending.  See prepare_indexer for more information

			New_Index = false;


			fgets( Choice, 80, stdin); // get the pathname

			// If there was a previously opened index we must close it.  
			// Note that this merges all the previous indexing info into the
			// general index.

			strcpy( (char*) IndexPath, (char*) Choice );

			if ( theStatus < 0 ) {
				IndexPath[0] = 0;
				State = inNothing;
			}

			printf("\n\n");
			break;

		case 3:
			// Index Files

			add_files();

			pick = -1;	// set this so we don't accidentally exit loop
			break;

		case 4:
			// Search Index
			
			if ( State == inIndexing ) {
				// Shouldn't ever get here - but just in case
				// I changed the code elsewhere

				printf("\nClosing and updating old index...\n");
				close_indexer();
				printf("Opening new index...\n");
				prepare_retrieval();
				State = inQuery;
			}
			else if ( State == inNothing ) {
				printf("Opening new index...\n");	
				prepare_retrieval();
				State = inQuery;
			}


			if ( theStatus < 0 ) {
				IndexPath[0] = 0;
				State = inNothing;
			}

			search();
			pick = -1;	// set this so we don't accidentally exit loop
			break;

		default:
			// Other - note that if we entered 0 we'll exit the loop
			break;

		}

	}

	// If we are done and have opened an index, close that index

	if ( State == inIndexing ) {
		printf("\nClosing and updating old index...\n");
		close_indexer();
		State = inNothing;

	}
	else if ( State == inQuery ) {
		printf("\nEnding old retrieval session...\n");
		close_retrieval();
		State = inNothing;
	}



}

// main
// ----

int main()
{

	// We put all our globals in here so that they can easily be kept track of.

	set_globals();

	// We open up the actual indexing object.  This is only done once for the entire
	// demo, so we moved it out of the initializing functions (which are called
	// frequently).  This *must* be done prior to using any Onix function.  Basically
	// this is creating Onix.   Note that these passcodes are not the real ones and
	// will not function.  The passcodes determine what Onix features are available
	// and when they time out (if at all)

	theIndexManager = ixCreateIndexManager(PASSCODE1, PASSCODE2, &theStatus);

	main_prompt();

	// Now that we are finished with the demo, free our Onix object.  

	ixDeleteIndexManager(theIndexManager, &theStatus);

	if ( theStatus < 0 ) {
		printf( "\nError Destroying Index Manager: %d \n", theStatus);
	}

	// Print out a nice farewell

	printf("\n\n\n");
	printf("Thank you for trying Onix.  Please visit our web page for more information.\n");
	printf("www.lextek.com\n");

	return 0;

}

#endif