int test_printwchartobuf_ascii(void)
{
Buf *buf = newbuf();
printwchartobuf(L'a', ESCAPE_NONE, buf);
assert(strcmp(bufstring(buf), "a") == 0);
assert(bufpos(buf) == 1);
assert(bufscreenpos(buf) == 1);
return 0;
}
int test_append_string(void)
{
Buf *buf = newbuf();
bufappend(buf, "abc", 3, 3);
assert(strcmp(bufstring(buf), "abc") == 0);
assert(bufpos(buf) == 3);
assert(bufscreenpos(buf) == 3);
return 0;
}
void md5_update(struct md5_ctx *ctx, const void *data, unsigned int len)
{
unsigned int n;
const uint8_t *ptr = data;
uint8_t *buf = (uint8_t *)ctx->buf;
while (len > 0) {
n = MD5_BLOCK_LENGTH - bufpos(ctx);
if (n > len)
n = len;
memcpy(buf + bufpos(ctx), ptr, n);
ptr += n;
len -= n;
ctx->nbytes += n;
if (bufpos(ctx) == 0) {
swap_words(ctx->buf, 16);
md5_mix(ctx, ctx->buf);
}
}
}
void md5_final(uint8_t *dst, struct md5_ctx *ctx)
{
static const uint8_t padding[MD5_BLOCK_LENGTH] = { 0x80 };
uint64_t final_len = ctx->nbytes * 8;
int pad_len, pos = bufpos(ctx);
/* add padding */
pad_len = MD5_BLOCK_LENGTH - 8 - pos;
if (pad_len <= 0)
pad_len += MD5_BLOCK_LENGTH;
md5_update(ctx, padding, pad_len);
/* add length directly */
swap_words(ctx->buf, 14);
ctx->buf[14] = final_len;
ctx->buf[15] = final_len >> 32;
/* final result */
md5_mix(ctx, ctx->buf);
le32enc(dst + 0, ctx->a);
le32enc(dst + 4, ctx->b);
le32enc(dst + 8, ctx->c);
le32enc(dst + 12, ctx->d);
}
