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/* strtoi.c
* Utilities to convert strings to integers
*
* Copyright 2016, Dario Lombardo
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* 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.
*/
#include "config.h"
#include "strtoi.h"
#include <errno.h>
gboolean ws_strtoi64(const gchar* str, gint64* cint)
{
gchar* endptr;
gint64 val;
errno = 0;
val = g_ascii_strtoll(str, &endptr, 10);
if ((val == 0 && endptr == str) || (*endptr != 0)) {
*cint = 0;
errno = EINVAL;
return FALSE;
}
if ((val == G_MAXINT64 || val == G_MININT64) && errno == ERANGE) {
*cint = 0;
/* errno is already set */
return FALSE;
}
*cint = val;
return TRUE;
}
gboolean ws_strtou64(const gchar* str, guint64* cint)
{
gchar* endptr;
guint64 val;
errno = 0;
val = g_ascii_strtoull(str, &endptr, 10);
if ((val == 0 && endptr == str) || (*endptr != 0)) {
*cint = 0;
errno = EINVAL;
return FALSE;
}
if (val == G_MAXUINT64 && errno == ERANGE) {
*cint = 0;
return FALSE;
}
*cint = val;
return TRUE;
}
#define DEFINE_WS_STRTOI_BITS(bits) \
gboolean ws_strtoi##bits(const gchar* str, gint##bits* cint) \
{ \
gint64 val; \
if (!ws_strtoi64(str, &val)) { \
return FALSE; \
} \
if (val < G_MININT##bits || val > G_MAXINT##bits) { \
*cint = 0; \
errno = ERANGE; \
return FALSE; \
} \
*cint = (gint##bits)val; \
return TRUE; \
}
DEFINE_WS_STRTOI_BITS(32);
DEFINE_WS_STRTOI_BITS(16);
DEFINE_WS_STRTOI_BITS(8);
#define DEFINE_WS_STRTOU_BITS(bits) \
int ws_strtou##bits(const gchar* str, guint##bits* cint) \
{ \
guint64 val; \
if (!ws_strtou64(str, &val)) { \
return FALSE; \
} \
if (val > G_MAXUINT##bits) { \
*cint = 0; \
errno = ERANGE; \
return FALSE; \
} \
*cint = (guint##bits)val; \
return TRUE; \
}
DEFINE_WS_STRTOU_BITS(32);
DEFINE_WS_STRTOU_BITS(16);
DEFINE_WS_STRTOU_BITS(8);
/*
* Editor modelines - https://www.wireshark.org/tools/modelines.html
*
* Local variables:
* c-basic-offset: 4
* tab-width: 8
* indent-tabs-mode: t
* End:
*
* vi: set shiftwidth=4 tabstop=8 noexpandtab:
* :indentSize=4:tabSize=8:noTabs=false:
*/
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