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bytes.c
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bytes.c
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#include "assert.h"
#include "string.h"
#include <alloc.h>
#include <bytes.h>
#include <gc.h>
int cb_bytes_cmp(struct cb_bytes *a, struct cb_bytes *b)
{
size_t len_a, len_b;
len_a = cb_bytes_len(a);
len_b = cb_bytes_len(b);
if (len_a < len_b)
return -1;
else if (len_a > len_b)
return 1;
return strncmp((char *) a->data, (char *) b->data, len_a);
}
size_t cb_bytes_len(struct cb_bytes *bs)
{
return cb_gc_size(&bs->gc_header) - sizeof(struct cb_bytes);
}
int16_t cb_bytes_get(struct cb_bytes *bs, size_t pos)
{
if (pos >= cb_bytes_len(bs))
return -1;
return bs->data[pos];
}
int cb_bytes_set(struct cb_bytes *bs, size_t pos, uint8_t value)
{
if (pos >= cb_bytes_len(bs))
return -1;
bs->data[pos] = value;
return 0;
}
char *cb_bytes_ptr(struct cb_bytes *bs)
{
return (char *) bs->data;
}
int cb_bytes_copy(struct cb_bytes *from, struct cb_bytes *to, size_t n)
{
if (cb_bytes_len(from) < n || cb_bytes_len(to) < n)
return 1;
memcpy(to->data, from->data, n);
return 0;
}