1 files changed, 44 insertions, 0 deletions

diff --git a/shell/shell.c b/shell/shell.c
index a9a1bc7..8800094 100644
--- a/shell/shell.c
+++ b/shell/shell.c
@@ -18,6 +18,7 @@
 #define FLAG_COMMAND      "-command"
 #define FLAG_STR_CUBE     "-cubestr"
 #define FLAG_MOVES        "-moves"
+#define FLAG_MOVES2       "-moves2"
 #define FLAG_TRANS        "-trans"
 #define FLAG_SOLVER       "-solver"
 #define FLAG_NISSTYPE     "-nisstype"
@@ -39,6 +40,7 @@ typedef struct {
         char *str_command;
         char *str_cube;
         char *str_moves;
+        char *str_moves2;
         char *str_trans;
         char *str_solver;
         char *str_nisstype;
@@ -59,6 +61,7 @@ static int64_t gendata_exec(args_t *);
 static int64_t solve_exec(args_t *);
 static int64_t solve_scramble_exec(args_t *);
 static int64_t countmoves_exec(args_t *);
+static int64_t comparemoves_exec(args_t *);
 static int64_t help_exec(args_t *);
 
 static int parse_args(int, char **, args_t *);
@@ -69,6 +72,7 @@ static bool set_cube(int, char **, args_t *);
 static bool set_str_command(int, char **, args_t *);
 static bool set_str_cube(int, char **, args_t *);
 static bool set_str_moves(int, char **, args_t *);
+static bool set_str_moves2(int, char **, args_t *);
 static bool set_str_trans(int, char **, args_t *);
 static bool set_str_solver(int, char **, args_t *);
 static bool set_str_nisstype(int, char **, args_t *);
@@ -91,6 +95,7 @@ struct {
         OPTION(FLAG_COMMAND, 1, set_str_command),
         OPTION(FLAG_STR_CUBE, 1, set_str_cube),
         OPTION(FLAG_MOVES, 1, set_str_moves),
+        OPTION(FLAG_MOVES2, 1, set_str_moves2),
         OPTION(FLAG_TRANS, 1, set_str_trans),
         OPTION(FLAG_SOLVER, 1, set_str_solver),
         OPTION(FLAG_NISSTYPE, 1, set_str_nisstype),
@@ -185,6 +190,13 @@ struct {
                 countmoves_exec
         ),
         COMMAND(
+                "compare",
+                "compare " FLAG_MOVES " MOVES " FLAG_MOVES2 " MOVES2",
+                "Compare the two move sequences."
+                INFO_MOVESFORMAT,
+                comparemoves_exec
+        ),
+        COMMAND(
                 "help",
                 "help [" FLAG_COMMAND " COMMAND]",
                 "If no COMMAND is specified, prints some generic information "
@@ -476,6 +488,29 @@ countmoves_exec(args_t *args)
 }
 
 static int64_t
+comparemoves_exec(args_t *args)
+{
+        long long cmp;
+
+        if ((cmp = nissy_comparemoves(args->str_moves, args->str_moves2)) < 0)
+                return cmp;
+
+        switch (cmp) {
+        case NISSY_COMPARE_MOVES_EQUAL:
+                printf("The two move sequences are equal\n");
+                break;
+        case NISSY_COMPARE_MOVES_DIFFERENT:
+                printf("The two move sequences are different\n");
+                break;
+        default:
+                printf("Error: unknown case\n");
+                return -1;
+        }
+
+        return 0;
+}
+
+static int64_t
 help_exec(args_t *args)
 {
         int i;
@@ -512,6 +547,7 @@ parse_args(int argc, char **argv, args_t *args)
                 .cube = "",
                 .str_cube = "",
                 .str_moves = "",
+                .str_moves2 = "",
                 .str_trans = "",
                 .str_solver = "",
                 .str_nisstype = "",
@@ -632,6 +668,14 @@ set_str_moves(int argc, char **argv, args_t *args)
 }
 
 static bool
+set_str_moves2(int argc, char **argv, args_t *args)
+{
+        args->str_moves2 = argv[0];
+
+        return true;
+}
+
+static bool
 set_str_trans(int argc, char **argv, args_t *args)
 {
         args->str_trans = argv[0];