void put(PtrLen<const char> str)
{
if( str.len>=Len )
{
put_full(str.suffix(Len));
}
else
{
put_short(str);
}
}
static void read_files(metafile_t *m, queue_t *q, unsigned char *pos)
{
int fd; /* file descriptor */
flist_t *f; /* pointer to a place in the file list */
ssize_t r = 0; /* number of bytes read from file(s)
into the read buffer */
#ifndef NO_HASH_CHECK
off_t counter = 0; /* number of bytes hashed
should match size when done */
#endif
piece_t *p = get_free(q, m->piece_length);
/* go through all the files in the file list */
for (f = m->file_list; f; f = f->next) {
/* open the current file for reading */
if ((fd = open(f->path, OPENFLAGS)) == -1) {
fprintf(stderr, "Error opening '%s' for reading: %s\n",
f->path, strerror(errno));
exit(EXIT_FAILURE);
}
while (1) {
ssize_t d = read(fd, p->data + r, m->piece_length - r);
if (d < 0) {
fprintf(stderr, "Error reading from '%s': %s\n",
f->path, strerror(errno));
exit(EXIT_FAILURE);
}
if (d == 0) /* end of file */
break;
r += d;
if (r == m->piece_length) {
p->dest = pos;
p->len = m->piece_length;
put_full(q, p);
pos += SHA_DIGEST_LENGTH;
#ifndef NO_HASH_CHECK
counter += r;
#endif
r = 0;
p = get_free(q, m->piece_length);
}
}
/* now close the file */
if (close(fd)) {
fprintf(stderr, "Error closing '%s': %s\n",
f->path, strerror(errno));
exit(EXIT_FAILURE);
}
}
/* finally append the hash of the last irregular piece to the hash string */
if (r) {
p->dest = pos;
p->len = r;
put_full(q, p);
} else
put_free(q, p, 0);
#ifndef NO_HASH_CHECK
counter += r;
if (counter != m->size) {
fprintf(stderr, "Counted %" PRIoff " bytes, "
"but hashed %" PRIoff " bytes. "
"Something is wrong...\n", m->size, counter);
exit(EXIT_FAILURE);
}
#endif
}
