1 files changed, 74 insertions, 0 deletions
diff --git a/archive/src/std/str.c b/archive/src/std/str.c
new file mode 100644
index 0000000..89c76a0
--- /dev/null
+++ b/archive/src/std/str.c
@@ -0,0 +1,74 @@
+#include "str.h"
+#include <assert.h>
+#include <string.h>
+#include "log.h"
+#include "mem.h"
+
+Str8 Str8_create(u8* buf, size_t len) { return (Str8){ .buf = buf, .len = len }; }
+
+Str8 Str8_cstr_view(char* string) { return Str8_create((u8*)string, strlen(string)); }
+
+bool Str8_equals(Str8 a, Str8 b) {
+  if (a.len != b.len) {
+    return false;
+  }
+
+  for (size_t i = 0; i < a.len; i++) {
+    if (a.buf[i] != b.buf[i]) {
+      return false;
+    }
+  }
+  return true;
+}
+
+char* Str8_to_cstr(arena* a, Str8 s) {
+  bool is_null_terminated = s.buf[s.len - 1] == 0;
+  size_t n_bytes = is_null_terminated ? s.len : s.len + 1;
+
+  u8* dest = arena_alloc(a, n_bytes);
+
+  memcpy(dest, s.buf, s.len);
+  if (is_null_terminated) {
+    dest[s.len] = '\0';
+  }
+  return (char*)dest;
+}
+
+char* Clone_cstr(arena* a, const char* s) {
+  if (s == NULL) {
+    WARN("Tried to clone a NULL char*");
+    return NULL;
+  }
+  Str8 st = Str8_cstr_view(s);
+  return Str8_to_cstr(a, st);
+}
+
+Str8 Str8_concat(arena* a, Str8 left, Str8 right) {
+  size_t n_bytes = left.len + right.len + 1;
+
+  u8* dest = arena_alloc(a, n_bytes);
+  memcpy(dest, left.buf, left.len);
+  memcpy(dest + right.len, right.buf, right.len);
+
+  dest[n_bytes - 1] = '\0';
+
+  return Str8_create(dest, n_bytes);
+}
+
+Str8 Str8_substr(Str8 s, u64 min, u64 max) {
+  assert(min >= 0);
+  assert(min < s.len);
+  assert(max >= 0);
+  assert(max <= s.len);
+  uint8_t* start = s.buf + (ptrdiff_t)min;
+  size_t new_len = max - min;
+  return (Str8){ .buf = start, .len = new_len };
+}
+
+Str8 Str8_take(Str8 s, u64 first_n) { return Str8_substr(s, 0, first_n); }
+
+Str8 Str8_drop(Str8 s, u64 last_n) { return Str8_substr(s, s.len - last_n, s.len); }
+
+Str8 Str8_skip(Str8 s, u64 n) { return Str8_substr(s, n, s.len); }
+
+Str8 Str8_chop(Str8 s, u64 n) { return Str8_substr(s, 0, s.len - n); }