#ifndef BASE_STRING_H
#define BASE_STRING_H

#define PushString(arena, count) (string8){ .data = (PushArrayZero(arena, u8, (count))), .size = (count) } 
#define StringCast(data, size) (string8){(u8 *)(data), (u64)(size) } 
#define StringPCast(data, size) (string8 *){(u8 *)(data), (u64)(size) } 

#define StringFmt "%.*s"
#define ULongFmt  "%lu"
#define ULLongFmt "%llu"

typedef struct string8 string8;
struct string8
{
    u8  *data;
    u64  size;
};

internal b8
string8_cmp(string8 a, string8 b)
{
    if (a.size != b.size) return 0;
    return (b8)(memcmp(a.data, b.data, a.size) == 0);
}

internal u64
string8_to_u64(u8 *buf, umm len)
{
    u64 value = 0;
    for (umm i = 0; i < len; ++i)
    {
        u8 c = buf[i];
        if (c < '0' || c > '9') break;
        value = value * 10 + (c - '0');
    }
    return value;
}

internal void
string8_append_char(string8 *buf, u8 c)
{
    buf->data[buf->size] = c;
    buf->size += 1;
}

read_only global_variable
string8 nil_string =
{
    .data = NULL,
    .size = 0,
};

#endif /* BASE_STRING_H */