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/*
* $Id: get.h 20677 2017-12-18 18:22:52Z yeti-dn $
* Copyright (C) 2004 David Necas (Yeti), Petr Klapetek.
* E-mail: yeti@gwyddion.net, klapetek@gwyddion.net.
*
* 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 of the License, 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., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef __GWY_FILE_GET_H__
#define __GWY_FILE_GET_H__
static inline guint64
gwy_get_guint32as64_le(const guchar **ppv)
{
const guint32 *pv = (const guint32*)(*ppv);
guint32 v = GUINT32_FROM_LE(*pv);
*ppv += sizeof(guint32);
return v;
}
static inline guint64
gwy_get_guint32as64_be(const guchar **ppv)
{
const guint32 *pv = (const guint32*)(*ppv);
guint32 v = GUINT32_FROM_BE(*pv);
*ppv += sizeof(guint32);
return v;
}
static inline void
get_CHARS(gchar *dest, const guchar **p, guint size)
{
memcpy(dest, *p, size);
*p += size;
}
static inline void
get_CHARS0(gchar *dest, const guchar **p, guint size)
{
memcpy(dest, *p, size);
*p += size;
dest[size-1] = '\0';
}
#define get_CHARARRAY(dest, p) get_CHARS(dest, p, sizeof(dest))
#define get_CHARARRAY0(dest, p) get_CHARS0(dest, p, sizeof(dest))
static inline gboolean
get_BBOOLEAN(const guchar **p)
{
gboolean b;
b = (**p != 0);
(*p)++;
return b;
}
/* Get a non-terminated string preceded by one byte containing the length.
* Size is the size of buffer pointer by *p. Returns %NULL if size is too
* small. */
static inline gchar*
get_PASCAL_STRING(const guchar **p,
gsize size)
{
guint len;
gchar *s;
if (!size)
return NULL;
len = **p;
(*p)++;
if (size < len + 1)
return NULL;
s = g_new(gchar, len+1);
memcpy(s, *p, len);
s[len] = '\0';
*p += len;
return s;
}
/* Get a non-terminated string preceded by one byte containing the length.
* Size is the maximum size of the string and the number of bytes the pointer
* will move forward.
* Dest must be one byte larger to hold the terminating NUL. */
static inline void
get_PASCAL_CHARS0(gchar *dest,
const guchar **p,
gsize size)
{
guint len;
len = MIN(**p, size);
(*p)++;
memcpy(dest, *p, len);
dest[len] = '\0';
*p += size;
}
#define get_PASCAL_CHARARRAY0(dest, p) \
get_PASCAL_CHARS0(dest, p, sizeof(dest)-1)
#endif
/* vim: set cin et ts=4 sw=4 cino=>1s,e0,n0,f0,{0,}0,^0,\:1s,=0,g1s,h0,t0,+1s,c3,(0,u0 : */
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