Add str_join

src/main.c

@@ -470,7 +470,35 @@ void string_test_misc(void)
     Str str4_trim = str_ascii_trim(str4);
     printf("str4_trim: '%.*s'\n", str4_trim.len, str4_trim.str);
 
+    S64 found = str_substr(str1, S("World"));
+    printf("1. found %ld\n", found);
+    found = str_substr(str_empty(), S("World"));
+    printf("2. found %ld\n", found);
+    found = str_substr(str_empty(), S(""));
+    printf("3. found %ld\n", found);
+    found = str_substr(str1, S(" "));
+    printf("4. found %ld\n", found);
+
 }
+void string_test_join(void)
+{
+    TRACEF("\n");
+    Arena arena;
+    arena_init(&arena, &ArenaOptions_Default);
+    Allocator allocator = arena_allocator(&arena);
+    Str strs[3] = {S("1"), S("two"), S("3-3")};
+    StrVec vec = STRVEC_STATIC_INITIALIZER(strs);
+
+    Str str = str_join(&allocator, vec, S("/"));
+    printf("str_join 1 '%.*s'\n", str.len, str.str);
+    str = str_join(&allocator, vec, S(""));
+    printf("str_join 2 '%.*s'\n", str.len, str.str);
+    vec.len = 0;
+    str = str_join(&allocator, vec, S("/"));
+    printf("str_join 2 '%.*s'\n", str.len, str.str);
+
+}
+
 int main(int argc, char *argv[])
 {
     arena_test_1();
@@ -486,6 +514,7 @@ int main(int argc, char *argv[])
     string_test_1();
     string_split_test_1();
     string_test_misc();
+    string_test_join();
 
 }