String tests

1 files changed, 26 insertions, 3 deletions

diff --git a/src/string.c b/src/string.c
index be96c63..9328911 100644
--- a/src/string.c
+++ b/src/string.c
@@ -18,8 +18,31 @@ strng_t *strng_new(smrt_arena_t *arena, u64 size) {
 strng_t *strng_from(smrt_arena_t *arena, char *c) {
     u64 size = strlen(c);
 
-    return strng_new(arena, size);
+    strng_t *s = strng_new(arena, size);
+
+    if (!s) {
+        return NULL;
+    }
+
+    memcpy((u8*)s+STRNG_BASE_POS, c, size);
+    s->len = size;
+
+    return s;
 }
 
-    b32   strng_set(strng_t *string, char *c);
-   void strng_clear(strng_t *string);
+b32 strng_set(strng_t *string, char *c) {
+    u64 size = strlen(c);
+
+    if (string->alloc_size < size) {
+        return false;
+    }
+
+    memcpy((u8*)string+STRNG_BASE_POS, c, size);
+    string->len = size;
+
+    return true;
+}
+
+void strng_clear(strng_t *string) {
+    string->len = 0;
+}