-static int matrix_encoding[] = { 16, 17, 18, 19, 20, 21, 22, 23, 24, 25,
- 192, 193, 194, 195, 196, 197, 198, 199,
- 200, 201, 202, 203, 204, 205, 206, 207 };
-static int decimal_encoding[] = { 16, 17, 18, 19, 20, 21, 22, 23, 24, 25 };
-static int hex_encoding[] = { 16, 17, 18, 19, 20, 21, 22, 23, 24, 25,
- 33, 34, 35, 36, 37, 38 };
-static int binary_encoding[] = { 16, 17 };
-static int dna_encoding[] = { 33, 35, 39, 52 };
-static unsigned char char_map[256] = {
+static const int matrix_encoding[] = { 16, 17, 18, 19, 20, 21, 22, 23, 24, 25,
+ 192, 193, 194, 195, 196, 197, 198, 199,
+ 200, 201, 202, 203, 204, 205, 206, 207 };
+static const int decimal_encoding[] = { 16, 17, 18, 19, 20, 21, 22, 23, 24, 25};
+static const int hex_encoding[] = { 16, 17, 18, 19, 20, 21, 22, 23, 24, 25,
+ 33, 34, 35, 36, 37, 38 };
+static const int binary_encoding[] = { 16, 17 };
+static const int dna_encoding[] = { 33, 35, 39, 52 };
+static const int ascii_encoding[] = {
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
+ 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
+ 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
+ 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
+ 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
+ 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95,
+ 96, 97, 98, 99,100,101,102,103,104,105,106,107,108,109,110,111,
+ 112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127
+};
+static const unsigned char char_map[256] = {