// Copyright (C) 2017 Alexander Koch
#include "bytebuffer.h"

void bytebuffer_init(bytebuffer_t* buffer) {
    buffer->data = 0;
    buffer->count = 0;
    buffer->capacity = 0;
}

void bytebuffer_clear(bytebuffer_t* buffer) {
    free(buffer->data);
    bytebuffer_init(buffer);
}

void bytebuffer_fill(bytebuffer_t* buffer, uint8_t data, int count) {
    if(buffer->capacity < buffer->count + count) {
        int capacity = buffer->capacity;
        while(capacity < buffer->count + count) {
            capacity = (capacity == 0) ? 8 : capacity * 2;
        }

        if(buffer->capacity == 0) {
            buffer->data = malloc(sizeof(uint8_t) * capacity);
        } else {
            buffer->data = realloc(buffer->data, sizeof(uint8_t) * capacity);
        }
        buffer->capacity = capacity;
    }
    for(int i = 0; i < count; i++) {
        buffer->data[buffer->count++] = data;
    }
}

void bytebuffer_write(bytebuffer_t* buffer, uint8_t data) {
    bytebuffer_fill(buffer, data, 1);
}