input coordinates from stdin

2 files changed, 47 insertions, 0 deletions

diff --git a/include/input.h b/include/input.h
new file mode 100644
index 0000000..7e1bb3e
--- /dev/null
+++ b/include/input.h
@@ -0,0 +1,9 @@
+#ifndef _INPUT
+#define _INPUT
+
+#include "types.h"
+
+Coord input_orig_coord();
+Coord input_dest_coord();
+
+#endif
diff --git a/lib/input.c b/lib/input.c
new file mode 100644
index 0000000..63df8c5
--- /dev/null
+++ b/lib/input.c
@@ -0,0 +1,38 @@
+#include <stdio.h>
+#include <string.h>
+
+#include "coordinate.h"
+#include "input.h"
+
+#define LENGTH 80
+
+static Coord _input_coord() {
+    char line[LENGTH];
+    int done = 0;   
+
+    while (!done) {
+        fgets(line, LENGTH, stdin);
+
+        if (strnlen(line, LENGTH) == 3 && line[2] == '\n')
+            line[2] = 0;
+
+        if (!coord_is_valid(line))
+            printf("Invalid coordinate. Write something like \"e2\": ");
+        else
+            done = 1;
+    }
+        
+    return coord_init(line);
+}
+
+Coord input_orig_coord() {
+    printf("Orig coordinate: ");
+
+    return _input_coord();
+}
+
+Coord input_dest_coord() {
+    printf("Dest coordinate: ");
+
+    return _input_coord();
+}