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// -*-c++-*-
/* $Id: wmstr.h,v 1.10 1999/01/27 09:51:30 dm Exp $ */
/*
*
* Copyright (C) 1998 David Mazieres (dm@uun.org)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2, or (at
* your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*
*/
#ifndef _WMSTR_H_
#define _WMSTR_H_ 1
#include "str.h"
void wstrobj_delfn (void *);
inline const str &
str2wstr (const str &s)
{
if (s)
str::Xvstomp (&s, wstrobj_delfn);
return s;
}
inline strobj *
wstrobj_alloc (size_t n)
{
strobj *b = strobj::alloc (n);
b->delfn = wstrobj_delfn;
return b;
}
class wmstr : public mstr {
void setiov (const iovec *iov, u_int cnt) {
size_t n = iovsize (iov, cnt);
b = wstrobj_alloc (n + 1);
b->len = n;
char *p = b->dat ();
for (u_int i = 0; i < cnt; i++) {
memcpy (p, iov[i].iov_base, iov[i].iov_len);
p += iov[i].iov_len;
}
}
public:
explicit wmstr (size_t n) {
b = wstrobj_alloc (n + 1);
b->len = n;
}
wmstr (const iovec *iov, u_int cnt) { setiov (iov, cnt); }
wmstr (const suio *uio) { setiov (uio->iov (), uio->iovcnt ()); }
wmstr (const strbuf &sb) { setiov (sb.iov (), sb.iovcnt ()); }
};
inline str
wstr (const void *buf, size_t len)
{
wmstr m (len);
memcpy (m, buf, len);
return m;
}
template<class T> class zeroed_tmp_buf {
zeroed_tmp_buf (const zeroed_tmp_buf &);
zeroed_tmp_buf &operator= (const zeroed_tmp_buf &);
public:
T *const base;
const size_t size;
explicit zeroed_tmp_buf (size_t n) : base (New T[n]), size (n) {}
~zeroed_tmp_buf () { bzero (base, size * sizeof (T)); delete[] base; }
operator T *() const { return base; }
T &operator[] (ptrdiff_t n) const {
#ifdef CHECK_BOUNDS
assert (size_t (n) < size);
#endif /* CHECK_BOUNDS */
return base[size_t (n)];
}
};
typedef zeroed_tmp_buf<char> zcbuf;
typedef zeroed_tmp_buf<u_char> zucbuf;
#endif /* !_WMSTR_H_ */
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