#ifndef STR8_H
#define STR8_H

#include "aliases.h"
#include <string.h>

#ifdef __cplusplus
BEGIN_C_LINKAGE
#endif // !__cplusplus

typedef struct str8 Str8;
struct str8 {
  u64 capacity;
  u64 size;
  c8 *buf;
};

typedef const Str8 Str8RO;

#define wapp_str8_buf(CAPACITY) ((Str8){.capacity = CAPACITY, .size = 0, .buf = (c8[CAPACITY]){0}})

// Utilises the fact that memcpy returns pointer to dest buffer and that getting
// address of compound literals is valid in C to create a string on the stack
#define wapp_str8_lit(STRING) ((Str8){.capacity = (sizeof(STRING) - 1) * 2, \
                                      .size     = sizeof(STRING) - 1,     \
                                      .buf      = memcpy(&((c8 [sizeof(STRING) * 2]){0}), STRING, sizeof(STRING))})
#define wapp_str8_lit_ro(STRING) ((Str8RO){.capacity = sizeof(STRING) - 1, \
                                           .size     = sizeof(STRING) - 1, \
                                           .buf      = (c8 *)STRING})

c8   wapp_str8_get(Str8RO *str, u64 index);
void wapp_str8_set(Str8 *str, u64 index, c8 c);

#ifdef __cplusplus
END_C_LINKAGE
#endif // !__cplusplus

#endif // !STR8_H