Update .gitignore

.gitignore

@@ -3,6 +3,7 @@
 test
 test.*
 *.dSYM
+.DS_Store
 *.pdb
 *.obj
 compile_commands.json

src/core/strings/str8/str8.c

@@ -0,0 +1,27 @@
+#include "str8.h"
+#include <string.h>
+
+Str8 wapp_str8_lit(char *str) {
+  if (!str) {
+    return (Str8){.capacity = 0, .size = 0, .buf = (u8 *)""};
+  }
+
+  u64 size = strlen(str);
+  return (Str8){.capacity = size, .size = size, .buf = (u8 *)str};
+}
+
+char wapp_str8_get(const Str8 *str, u64 index) {
+  if (index >= str->size) {
+    return '\0';
+  }
+
+  return (char)(str->buf[index]);
+}
+
+void wapp_str8_set(Str8 *str, u64 index, char c) {
+  if (index >= str->size) {
+    return;
+  }
+
+  str->buf[index] = (u8)c;
+}

src/core/strings/str8/str8.h

@@ -0,0 +1,25 @@
+#ifndef STR8_H
+#define STR8_H
+
+#include "aliases.h"
+
+#ifdef __cplusplus
+BEGIN_C_LINKAGE
+#endif // !__cplusplus
+
+typedef struct str8 Str8;
+struct str8 {
+  u64 capacity;
+  u64 size;
+  u8 *buf;
+};
+
+Str8 wapp_str8_lit(char *str);
+char wapp_str8_get(const Str8 *str, u64 index);
+void wapp_str8_set(Str8 *str, u64 index, char c);
+
+#ifdef __cplusplus
+END_C_LINKAGE
+#endif // !__cplusplus
+
+#endif // !STR8_H