From 8c17e9d9473ced08c37aad7705e0a9f9c4873577 Mon Sep 17 00:00:00 2001
From: Paul Duncan <pabs@pablotron.org>
Date: Tue, 8 Jan 2019 14:26:16 -0500
Subject: add sok_ctx_hash, cache, solver fixes

---
 src/text/main.c | 52 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 52 insertions(+)

(limited to 'src/text')

diff --git a/src/text/main.c b/src/text/main.c
index 80bdc65..de5b5f3 100644
--- a/src/text/main.c
+++ b/src/text/main.c
@@ -752,6 +752,42 @@ print_level(
   printf("%s\n", print_buf);
 }
 
+static void
+solve_on_error(
+  const char * const err
+) {
+  fprintf(stderr, "Error solving level: %s\n", err);
+  exit(EXIT_FAILURE);
+}
+
+static void
+print_moves(
+  const sok_ctx_t * const ctx,
+  const size_t skip_moves
+) {
+  printf("Moves (%zu): ", ctx->num_moves - skip_moves);
+  for (size_t i = skip_moves; i < ctx->num_moves; i++) {
+    switch (ctx->moves[i].dir) {
+    case SOK_DIR_UP:
+      fputs("u", stdout);
+      break;
+    case SOK_DIR_DOWN:
+      fputs("d", stdout);
+      break;
+    case SOK_DIR_LEFT:
+      fputs("l", stdout);
+      break;
+    case SOK_DIR_RIGHT:
+      fputs("r", stdout);
+      break;
+    default:
+      fprintf(stderr, "Error: invalid move: %u", ctx->moves[i].dir);
+      exit(EXIT_FAILURE);
+    }
+  }
+  printf("\n");
+}
+
 int main(int argc, char *argv[]) {
   size_t level = (argc > 1) ? atoi(argv[1]) : 0;
 
@@ -836,6 +872,22 @@ int main(int argc, char *argv[]) {
           return EXIT_FAILURE;
         }
       }
+
+      break;
+    case 's':
+      {
+        // get current number of moves
+        const size_t old_num_moves = ctx.num_moves;
+
+        if (sok_solve(&ctx, solve_on_error)) {
+          // found solution, print it
+          print_moves(&ctx, old_num_moves);
+        } else {
+          fprintf(stderr, "W: Couldn't solve level\n");
+        }
+      }
+
+      break;
     default:
       // ignore
       break;
-- 
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