Switched (unfortunatelly) to c++, added sensible makefile

1 files changed, 0 insertions, 411 deletions

diff --git a/cube.c b/cube.c
deleted file mode 100644
index d3e0423..0000000
--- a/cube.c
+++ /dev/null
@@ -1,411 +0,0 @@
-#include <stdio.h>
-#include <stdint.h>
-#include <stdlib.h>
-#include <string.h>
-#include <assert.h>
-#include <unistd.h>
-
-#include "khash.h"
-
-#define FACE32
-// #define FACE64
-
-#ifdef FACE32
-typedef uint32_t face_t;
-const uint32_t M012 = 0x00000fff;
-const uint32_t M234 = 0x000fff00;
-const uint32_t M456 = 0x0fff0000;
-const uint32_t M670 = 0xff00000f;
-#else
-typedef uint64_t face_t;
-#endif /* FACE32 */
-
-typedef enum {
-  UP = 0,
-  LEFT = 1,
-  FRONT = 2,
-  RIGHT = 3,
-  BACK = 4,
-  DOWN = 5
-} cube_side;
-
-typedef enum {
-  WHITE = 0,
-  ORANGE = 1,
-  GREEN = 2,
-  RED = 3,
-  BLUE = 4,
-  YELLOW = 5,
-  EMPTY_COLOR = 6
-} colors;
-
-typedef struct {
-  face_t faces[6];
-} cube_t;
-
-/******************************************************************************/
-/* Macros for generating rotation functions ***********************************/
-
-#define ROR(x, y) (face_t)((long)(x) >> (y) | (long)(x) << ((8*sizeof(face_t)) - (y)))
-static inline face_t ror(face_t x, face_t y) {
-  return ROR(x, y);
-}
-
-#define PASTE(to, from, M1, M2) {                                           \
-  to = ((to) & ~(M ## M1)) | ((from) & M ## M2);                           \
-}
-
-#define PASTE_ROR(to, from, M1, M2, len) {                                  \
-  (to) = ((to) & ~(M ## M1)) | ror((from) & M ## M2, len * sizeof(face_t)); \
-}
-
-#define PASTE_FACE(cube, to, from, M1, M2) { 		\
-  PASTE((cube).faces[to], (cube).faces[from], M1, M2);	\
-}
-
-#define PASTE_FACE_ROR(cube, to, from, M1, M2, len) {		\
-  PASTE_ROR((cube).faces[to], (cube).faces[from], M1, M2, len);	\
-}
-
-#define ABSTRACT_ROTATION_90(cube, face, len, f0, M0, f1, M1, f2, M2, f3, M3, C0, C1, C2, C3) { \
-  (cube).faces[face] = ror((cube).faces[face], len * sizeof(face_t));			\
-  face_t temporary_var = (cube).faces[f0];					\
-  PASTE_FACE_ROR(cube, f0, f1, M0, M1, C0);					\
-  PASTE_FACE_ROR(cube, f1, f2, M1, M2, C1);					\
-  PASTE_FACE_ROR(cube, f2, f3, M2, M3, C2);					\
-  PASTE_ROR((cube).faces[f3], temporary_var, M3, M0, C3);	\
-}
-
-#define ABSTRACT_ROTATION_180(cube, face, f0, M0, f1, M1, f2, M2, f3, M3, C01, C23) {	\
-  (cube).faces[face] = ror((cube).faces[face], 4 * sizeof(face_t));	\
-  face_t temporary_var = (cube).faces[f0];							\
-  PASTE_FACE_ROR(cube, f0, f1, M0, M1, C01);						\
-  PASTE_ROR((cube).faces[f1], temporary_var, M1, M0, C01);			\
-  temporary_var = (cube).faces[f2];									\
-  PASTE_FACE_ROR(cube, f2, f3, M2, M3, C23);						\
-  PASTE_ROR((cube).faces[f3], temporary_var, M3, M2, C23);			\
-}
-
-#define DEFINE_ROTATION_90(rotation, face, len, f0, M0, f1, M1, f2, M2, f3, M3, C0, C1, C2, C3)	\
-static void rotation_ ## rotation (cube_t *cube) {	\
-  ABSTRACT_ROTATION_90(*cube, face, len, f0, M0, f1, M1, f2, M2, f3, M3, C0, C1, C2, C3);	\
-}
-
-#define DEFINE_ROTATION_180(rotation, face, f0, M0, f1, M1, f2, M2, f3, M3, C01, C23)	\
-static void rotation_ ## rotation (cube_t *cube) {	\
-  ABSTRACT_ROTATION_180(*cube, face, f0, M0, f1, M1, f2, M2, f3, M3, C01, C23);	\
-}
-
-/* Clockwise rotations */
-DEFINE_ROTATION_90(r, RIGHT, 6, FRONT, 234, DOWN, 234, BACK, 670, UP, 234, 0, 4, 4, 0)
-DEFINE_ROTATION_90(l, LEFT, 6, FRONT, 670, UP, 670, BACK, 234, DOWN, 670, 0, 4, 4, 0)
-DEFINE_ROTATION_90(u, UP, 6, FRONT, 012, RIGHT, 012, BACK, 012, LEFT, 012, 0, 0, 0, 0)
-DEFINE_ROTATION_90(d, DOWN, 6, FRONT, 456, LEFT, 456, BACK, 456, RIGHT, 456, 0, 0, 0, 0)
-DEFINE_ROTATION_90(f, FRONT, 6, UP, 456, LEFT, 234, DOWN, 012, RIGHT, 670, 6, 6, 6, 6)
-DEFINE_ROTATION_90(b, BACK, 6, UP, 012, RIGHT, 234, DOWN, 456, LEFT, 670, 2, 2, 2, 2)
-
-/* Counter clockwise rotations */
-DEFINE_ROTATION_90(rp, RIGHT, 2, FRONT, 234, UP, 234, BACK, 670, DOWN, 234, 0, 4, 4, 0)
-DEFINE_ROTATION_90(lp, LEFT, 2, FRONT, 670, DOWN, 670, BACK, 234, UP, 670, 0, 4, 4, 0)
-DEFINE_ROTATION_90(up, UP, 2, FRONT, 012, LEFT, 012, BACK, 012, RIGHT, 012, 0, 0, 0, 0)
-DEFINE_ROTATION_90(dp, DOWN, 2, FRONT, 456, RIGHT, 456, BACK, 456, LEFT, 456, 0, 0, 0, 0)
-DEFINE_ROTATION_90(fp, FRONT, 2, UP, 456, RIGHT, 670, DOWN, 012, LEFT, 234, 2, 2, 2, 2)
-DEFINE_ROTATION_90(bp, BACK, 2, UP, 012, LEFT, 670, DOWN, 456, RIGHT, 234, 6, 6, 6, 6)
-
-/* Double clockwise */
-DEFINE_ROTATION_180(r2, RIGHT, FRONT, 234, BACK, 670, UP, 234, DOWN, 234, 4, 0)
-DEFINE_ROTATION_180(l2, LEFT, FRONT, 670, BACK, 234, UP, 670, DOWN, 670, 4, 0)
-DEFINE_ROTATION_180(u2, UP, FRONT, 012, BACK, 012, RIGHT, 012, LEFT, 012, 0, 0)
-DEFINE_ROTATION_180(d2, DOWN, FRONT, 456, BACK, 456, RIGHT, 456, LEFT, 456, 0, 0)
-DEFINE_ROTATION_180(f2, FRONT, UP, 456, DOWN, 012, RIGHT, 670, LEFT, 234, 4, 4)
-DEFINE_ROTATION_180(b2, BACK, UP, 012, DOWN, 456, RIGHT, 234, LEFT, 670, 4, 4)
-
-typedef enum {
-  ROT_R = 0,
-  ROT_L,
-  ROT_U,
-  ROT_D,
-  ROT_F,
-  ROT_B,
-  ROT_RP,
-  ROT_LP,
-  ROT_UP,
-  ROT_DP,
-  ROT_FP,
-  ROT_BP,
-  ROT_R2,
-  ROT_L2,
-  ROT_U2,
-  ROT_D2,
-  ROT_F2,
-  ROT_B2,
-  NULL_ROT
-} rotations;
-
-typedef void (*rot_f)(cube_t *);
-
-static const rot_f rot_func[] = {
-  rotation_r,
-  rotation_l,
-  rotation_u,
-  rotation_d,
-  rotation_f,
-  rotation_b,
-  rotation_rp,
-  rotation_lp,
-  rotation_up,
-  rotation_dp,
-  rotation_fp,
-  rotation_bp,
-  rotation_r2,
-  rotation_l2,
-  rotation_u2,
-  rotation_d2,
-  rotation_f2,
-  rotation_b2,
-};
-
-static void perform_rotations(cube_t *cube, rotations rots[]) {
-  while(*rots != NULL_ROT) {
-	rot_func[*rots](cube);	
-	rots++;
-  }
-}
-
-/******************************************************************************/
-/* Parsing rotations from input ***********************************************/
-
-#define PRIM_CHAR '\''
-
-static int str_to_rot(char *str, rotations *rot) {
-  ssize_t len = strlen(str);
-  int i;
-
-  if (len == 0 || len > 2) {
-	return -1;
-  }
-
-  const char rots_char[] = { 'R', 'L', 'U', 'D', 'F', 'B' };
-  for (i = 0; i < 6; i++) {
-	if (str[0] == rots_char[i]) {
-	  *rot = i;
-	  if (len == 2) {
-		if (str[1] == PRIM_CHAR) {
-		  *rot += 6;
-		} else if (str[1] == '2') {
-		  *rot += 12;
-		}
-		else {
-		  return -1;
-		}
-	  }
-	  return 0;
-	}
-  }
-  return -1;
-}
-
-static rotations* parse_scramble(char **str) {
-  ssize_t sz = 0;
-  ssize_t i = 0;
-  char *rot_str = str[0];
-  while (rot_str) {
-	printf("token: %s\n", rot_str);
-	rot_str = str[++sz];
-  }
-
-  rotations *rots = calloc(sizeof(rotations), sz+1); 
-
-  for (i = 0; i < sz; i++) {
-	if (str_to_rot(str[i], &rots[i])) {
-	  free(rots);
-	  return NULL;
-	}
-  }
-
-  rots[sz] = NULL_ROT;
-
-  return rots;
-}
-
-static char **tokenize_rot_str(char *str) {
-  const char *delims = " \n\t";
-  ssize_t capacity = 20;
-  char **tokens = calloc(sizeof(char *), capacity);
-  int tok_cnt = 0;
-
-  char *tok = strtok(str, delims);
-  while (tok != NULL) {
-	tok_cnt++;
-	if (tok_cnt > capacity) {
-	  capacity *= 2;
-	  tokens = realloc(tokens, sizeof(char *) * capacity);
-	}
-	tokens[tok_cnt - 1] = tok;
-	tok = strtok(NULL, delims);
-  }
-
-  tokens = realloc(tokens, (sizeof(char *) * (1 + tok_cnt)));
-  tokens[tok_cnt] = NULL;
-
-  return tokens;
-}
-
-static rotations *rot_str_to_rotations(char *str_in) {
-  char *str = alloca(strlen(str_in) + 1);
-  memcpy(str, str_in, strlen(str_in) + 1);
-
-  char **tokens = tokenize_rot_str(str);
-  rotations *rots = parse_scramble(tokens); 
-  free(tokens);
-  return rots;
-}
-
-static int rotate_from_str(cube_t *cube, char *str) {
-  rotations *rot = rot_str_to_rotations(str);
-  if (!rot) {
-	return -1;
-  }
-  perform_rotations(cube, rot);
-  free(rot);
-  return 0;
-}
-
-static void init_cube(cube_t *cube) {
-  for (int face = 0; face < 6; face++) {
-	cube->faces[face] = 0;
-	for (int tile = 0; tile < 8; tile++) {
-	  cube->faces[face] |= (face << (tile * sizeof(face_t)));
-	}
-  }
-}
-
-/******************************************************************************/
-/* Printint cube state ********************************************************/
-
-static const char letters[] = { 'W', 'O', 'G', 'R', 'B', 'Y' };
-static const char *terminal_letters[] = {
-  "W",
-  "\e[35mO\e[0m",
-  "\e[32mG\e[0m",
-  "\e[31mR\e[0m",
-  "\e[34mB\e[0m",
-  "\e[33mY\e[0m",
-};
-
-static colors get_tile_color(face_t face, int tile) {
-  colors color = face >> (tile * sizeof(face_t)) & ((1<<sizeof(face_t)) - 1);
-  assert(color <= 5);
-  return color;
-}
-
-static void dump_face(face_t face, colors buf[3][3]) {
-  buf[0][0] = get_tile_color(face, 0); 
-  buf[0][1] = get_tile_color(face, 1); 
-  buf[0][2] = get_tile_color(face, 2); 
-  buf[1][0] = get_tile_color(face, 7); 
-  buf[1][2] = get_tile_color(face, 3); 
-  buf[2][0] = get_tile_color(face, 6); 
-  buf[2][1] = get_tile_color(face, 5); 
-  buf[2][2] = get_tile_color(face, 4); 
-  assert(buf[0][0] <= 5);
-}
-
-static void fill_face(cube_t *cube, cube_side face, colors buf[3][3]) {
-  dump_face(cube->faces[face], buf);
-  buf[1][1] = (colors)face;
-}
-
-static void dump_cube_grid(cube_t *cube) {
-  int i, j, row, col;
-  colors buf[3][4][3][3];	/* XD */
-
-  memset(buf, -1, 3*4*3*3*sizeof(colors));
-  fill_face(cube, UP, buf[0][1]);
-  fill_face(cube, LEFT, buf[1][0]);
-  fill_face(cube, FRONT, buf[1][1]);
-  fill_face(cube, RIGHT, buf[1][2]);
-  fill_face(cube, BACK, buf[1][3]);
-  fill_face(cube, DOWN, buf[2][1]);
-
-  for (i = 0; i < 3; i++) {
-	for (row = 0; row < 3; row++) {
-	  for (j = 0; j < 4; j++) {
-		for (col = 0; col < 3; col++) {
-		  colors color = buf[i][j][row][col];
-		  printf("%s", (color == -1 ? " " : terminal_letters[color])); 
-		} 
-	  }
-	  printf("\n");
-	}
-  }
-}
-
-/******************************************************************************/
-/* Hash map *******************************************************************/
-
-#ifdef FACE32
-#define P1 ((uint64_t)516077606561857057)
-#define P2 ((uint64_t)217685325020058187) 
-#define P3 ((uint64_t)843829397461693519)
-#define MOD_M 4200892139
-#define first_64(cube) (*(uint64_t*)((cube).faces))
-#define second_64(cube) (*(uint64_t*)((cube).faces+2))
-#define third_64(cube) (*(uint64_t*)((cube).faces+4))
-#define kh_cube_hash_func(cube) (khint32_t)((first_64(cube)*P1+second_64(cube)*P2+third_64(cube)*P3)%(uint64_t)MOD_M)
-#define kh_cube_hash_equal(cube1, cube2) (first_64(cube1) == first_64(cube2) && second_64(cube1) == second_64(cube2) && third_64(cube1) == third_64(cube2))
-
-KHASH_INIT(cube, cube_t, int, 0, kh_cube_hash_func, kh_cube_hash_equal)
-
-#endif /* FACE32 */ 
-
-
-/******************************************************************************/
-/* Main ***********************************************************************/
-
-void test_scrambling() {
-  cube_t cube;
-  int i;
-  char *buf = NULL;
-  ssize_t sz;
-
-  while (getline(&buf, &sz, stdin) != -1) {
-	init_cube(&cube);
-	if (sz == 0) break;
-	printf("> %s\n", buf);
-	rotations *rots = rot_str_to_rotations(buf);
-	if (rots) {
-	  perform_rotations(&cube, rots);
-	  free(rots);
-	  dump_cube_grid(&cube);
-	} else {
-	  printf("Rots == null :o\n");
-	}
-  }
-
-  if (buf)
-	free(buf);
-}
-
-int main() {
-  int ret;
-  khiter_t k;
-  cube_t cube;
-  khash_t(cube) *h;
-
-  init_cube(&cube);
-  h = kh_init(cube);
-
-  kh_put(cube, h, cube, &ret);
-
-  rotate_from_str(&cube, "R D F");  
-  
-  kh_put(cube, h, cube, &ret);
-  for (k = kh_begin(h); k != kh_end(h); ++k) {
-	if (kh_exist(h, k)) {
-	  dump_cube_grid(&kh_key(h, k));
-	}
-  }
-
-  kh_destroy(cube, h);
-}