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/* common.transpostions.rectangular.h - common rectangular tranpositions header file
*
* This program is part of Crank, a cryptanalysis tool
* Copyright (C) 2000 Matthew Russell
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License (LICENSE) for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*/
#ifndef H_COMMON_TRANSPOSITIONS_RECTANGULAR
#define H_COMMON_TRANSPOSITIONS_RECTANGULAR
#define NULL_CHARACTER '#'
typedef char* Grid;
typedef int gridpath;
#define HORIZONTALS_STRAIGHT_TL 1
#define HORIZONTALS_STRAIGHT_BL 2
#define HORIZONTALS_REVERSE_TR 3
#define HORIZONTALS_REVERSE_BR 4
#define HORIZONTALS_ALTERNATE_TL 5
#define HORIZONTALS_ALTERNATE_TR 6
#define HORIZONTALS_ALTERNATE_BR 7
#define HORIZONTALS_ALTERNATE_BL 8
#define VERTICALS_DESCENDING_TL 9
#define VERTICALS_DESCENDING_TR 10
#define VERTICALS_ASCENDING_BL 11
#define VERTICALS_ASCENDING_BR 12
#define VERTICALS_ALTERNATE_TL 13
#define VERTICALS_ALTERNATE_TR 14
#define VERTICALS_ALTERNATE_BR 15
#define VERTICALS_ALTERNATE_BL 16
#define SPIRAL_CLOCKWISE_IN_TL 17
#define SPIRAL_CLOCKWISE_IN_TR 18
#define SPIRAL_CLOCKWISE_IN_BR 19
#define SPIRAL_CLOCKWISE_IN_BL 20
#define SPIRAL_ANTICLOCKWISE_IN_TL 21
#define SPIRAL_ANTICLOCKWISE_IN_TR 22
#define SPIRAL_ANTICLOCKWISE_IN_BR 23
#define SPIRAL_ANTICLOCKWISE_IN_BL 24
#define SPIRAL_CLOCKWISE_OUT_TL 25
#define SPIRAL_CLOCKWISE_OUT_TR 26
#define SPIRAL_CLOCKWISE_OUT_BR 27
#define SPIRAL_CLOCKWISE_OUT_BL 28
#define SPIRAL_ANTICLOCKWISE_OUT_TL 29
#define SPIRAL_ANTICLOCKWISE_OUT_TR 30
#define SPIRAL_ANTICLOCKWISE_OUT_BR 31
#define SPIRAL_ANTICLOCKWISE_OUT_BL 32
#define MAX_GRIDPATH 32 /* Should be last number from above */
#define MAX_GRIDPATH_ARRAY 33 /* Should be one more than MAX_GRIDPATH */
extern const char *grid_path_names[MAX_GRIDPATH_ARRAY];
Grid make_new_grid(int rows, int cols, char *text, gridpath path); /* Makes a new grid - text must contain rows * cols text */
char *extract_from_grid(Grid grid, int rows, int cols, gridpath path);
void free_grid(Grid grid);
char *transform_with_grid(int rows, int cols, char *text, gridpath writepath, gridpath readpath);
#endif
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