Implemented lz_sb_to_cstr

examples/sb_to_cstr.c

@@ -0,0 +1,16 @@
+#include <stdio.h>
+#define LAZY_IMPL
+#include "../lazy.h"
+
+int main() {
+  Lz_SB x = lz_sb_from_cstr("Hello");
+  Lz_SB y = lz_sb_from_cstr(" World");
+
+  lz_da_concat(x, y);
+  lz_sb_add_char(&x, '\n');
+
+  char *s = lz_sb_to_cstr(&x);
+  printf("%s", s);
+  free(s);
+  return 0;
+}

lazy.h

@@ -42,6 +42,7 @@ size_t lz_hm_hash_void_get(size_t cap, _Bool *exists, _Bool *tombstones,
 size_t lz_hm_hash_void_set(size_t cap, _Bool *exists,
                             _Bool *tombstones, void* key, size_t k_s);
 Lz_Slc lz_slc_from_cstr(char *dat);
+char *lz_sb_to_cstr(Lz_SB *sb);
 void lz_sb_append_cstr(Lz_SB *sb, const char *cstr);
 void lz_sb_add_char(Lz_SB *sb, char c);
 char *lz_cstr_dup(const char *s);
@@ -404,6 +405,13 @@ Lz_SB lz_sb_from_cstr(const char *dat) {
   return sb;
 }
 
+char *lz_sb_to_cstr(Lz_SB *sb) {
+  char *cstr = malloc(sb->cnt+1);
+  memcpy(cstr, sb->data, sizeof(char)*sb->cnt);
+  cstr[sb->cnt] = 0;
+  return cstr;
+}
+
 #define lz_da_append(da, x) do { \
   if ((da).cap > (da).cnt) {\
     (da).data[(da).cnt++] = (x);\