static int __write(RIO *io, RIODesc *fd, const ut8 *buf, int count) {
if (fd == NULL || fd->data == NULL)
return -1;
if (io->off+count > RIOMALLOC_SZ (fd))
count -= (io->off+count-(RIOMALLOC_SZ (fd)));
if (count>0)
memcpy (RIOMALLOC_BUF (fd)+io->off, buf, count);
return count;
}
static int __read(RIO *io, RIODesc *fd, ut8 *buf, int count) {
memset (buf, 0xff, count);
if (fd == NULL || fd->data == NULL)
return -1;
if (io->off>RIOMALLOC_SZ (fd))
return -1;
if (io->off+count >= RIOMALLOC_SZ (fd))
count = RIOMALLOC_SZ (fd) - io->off;
memcpy (buf, RIOMALLOC_BUF (fd)+io->off, count);
return count;
}
static int __read(RIO *io, RIODesc *fd, ut8 *buf, int count) {
memset (buf, 0xff, count);
if (!fd || !fd->data) {
return -1;
}
if (RIOMALLOC_OFF (fd) > RIOMALLOC_SZ (fd)) {
return -1;
}
if (RIOMALLOC_OFF (fd) + count >= RIOMALLOC_SZ (fd)) {
count = RIOMALLOC_SZ (fd) - RIOMALLOC_OFF (fd);
}
memcpy (buf, RIOMALLOC_BUF (fd) + RIOMALLOC_OFF (fd), count);
return count;
}
static int __write(RIO *io, RIODesc *fd, const ut8 *buf, int count) {
if (!fd || !buf || count<0 || fd->data == NULL)
return -1;
if (RIOMALLOC_OFF (fd) > RIOMALLOC_SZ (fd))
return -1;
if (RIOMALLOC_OFF (fd) + count > RIOMALLOC_SZ (fd))
count -= (RIOMALLOC_OFF (fd) + count-(RIOMALLOC_SZ (fd)));
if (count > 0) {
memcpy (RIOMALLOC_BUF (fd) + RIOMALLOC_OFF (fd), buf, count);
RIOMALLOC_OFF (fd) += count;
return count;
}
return -1;
}
static ut64 __lseek(struct r_io_t *io, RIODesc *fd, ut64 offset, int whence) {
switch (whence) {
case SEEK_SET: return offset;
case SEEK_CUR: return io->off + offset;
case SEEK_END: return RIOMALLOC_SZ (fd);
}
return offset;
}
static ut64 __lseek(RIO* io, RIODesc *fd, ut64 offset, int whence) {
ut64 r_offset = offset;
if (!fd || !fd->data)
return offset;
switch (whence) {
case SEEK_SET:
r_offset = (offset <= RIOMALLOC_SZ (fd)) ? offset : RIOMALLOC_SZ (fd);
break;
case SEEK_CUR:
r_offset = (RIOMALLOC_OFF (fd) + offset <= RIOMALLOC_SZ (fd)) ? RIOMALLOC_OFF (fd) + offset : RIOMALLOC_SZ (fd);
break;
case SEEK_END:
r_offset = RIOMALLOC_SZ (fd);
break;
}
RIOMALLOC_OFF (fd) = r_offset;
return RIOMALLOC_OFF (fd);
}
static int __resize(RIO *io, RIODesc *fd, ut64 count) {
ut8 * new_buf = NULL;
if (fd == NULL || fd->data == NULL || count == 0)
return -1;
if (RIOMALLOC_OFF (fd) > RIOMALLOC_SZ (fd))
return -1;
new_buf = malloc (count);
if (!new_buf) return -1;
memcpy (new_buf, RIOMALLOC_BUF (fd), R_MIN(count, RIOMALLOC_SZ (fd)));
if (count > RIOMALLOC_SZ (fd) )
memset (new_buf+RIOMALLOC_SZ (fd), 0, count-RIOMALLOC_SZ (fd));
free (RIOMALLOC_BUF (fd));
RIOMALLOC_BUF (fd) = new_buf;
RIOMALLOC_SZ (fd) = count;
return count;
}
static bool __resize(RIO *io, RIODesc *fd, ut64 count) {
ut8 * new_buf = NULL;
if (!fd || !fd->data || count == 0) {
return false;
}
if (RIOMALLOC_OFF (fd) > RIOMALLOC_SZ (fd)) {
return false;
}
new_buf = malloc (count);
if (!new_buf) return -1;
memcpy (new_buf, RIOMALLOC_BUF (fd), R_MIN (count, RIOMALLOC_SZ (fd)));
if (count > RIOMALLOC_SZ (fd)) {
memset (new_buf + RIOMALLOC_SZ (fd), 0, count - RIOMALLOC_SZ (fd));
}
free (RIOMALLOC_BUF (fd));
RIOMALLOC_BUF (fd) = new_buf;
RIOMALLOC_SZ (fd) = count;
return true;
}
