void __smakebuf(register FILE *fp)
{
register size_t size, couldbetty;
register void *p;
struct stat st;
if (fp->_flags & __SNBF)
{
fp->_bf._base = fp->_p = fp->_nbuf;
fp->_bf._size = 1;
return;
}
if (fp->_file < 0 || _fstat_r(fp->_data, fp->_file, &st) < 0)
{
couldbetty = 0;
size = BUFSIZ;
/* do not try to optimise fseek() */
fp->_flags |= __SNPT;
}
else
{
couldbetty = (st.st_mode & S_IFMT) == S_IFCHR;
#ifdef HAVE_BLKSIZE
size = st.st_blksize <= 0 ? BUFSIZ : st.st_blksize;
#else
size = BUFSIZ;
#endif
/*
* Optimize fseek() only if it is a regular file.
* (The test for __sseek is mainly paranoia.)
*/
if ((st.st_mode & S_IFMT) == S_IFREG && fp->_seek == __sseek)
{
fp->_flags |= __SOPT;
#ifdef HAVE_BLKSIZE
fp->_blksize = st.st_blksize;
#else
fp->_blksize = 1024;
#endif
}
else
fp->_flags |= __SNPT;
}
if ((p = _malloc_r(fp->_data, size)) == NULL)
{
fp->_flags |= __SNBF;
fp->_bf._base = fp->_p = fp->_nbuf;
fp->_bf._size = 1;
}
else
{
fp->_data->__cleanup = _cleanup_r;
fp->_flags |= __SMBF;
fp->_bf._base = fp->_p = (unsigned char *)p;
fp->_bf._size = size;
if (couldbetty && isatty(fp->_file))
fp->_flags |= __SLBF;
}
}
int _stat_r(struct _reent *r, const char *path, struct stat *s) {
int ret, fd;
/*
* spiffs has no directories, simulating statting root directory;
* required for mg_send_http_file.
*/
if ((strcmp(path, "./") == 0) || (strcmp(path, "/") == 0)) {
memset(s, 0, sizeof(*s));
s->st_mode = S_IFDIR;
return 0;
}
fd = _open_r(NULL, path, O_RDONLY, 0);
if (fd == -1) return -1;
ret = _fstat_r(NULL, fd, s);
_close_r(NULL, fd);
return ret;
}