forked from osmocom/wireshark
4863d813e9
Warning: wireshark/wsutil/strtoi.c:113:1: warning: The left operand of '<' is a garbage value DEFINE_WS_STRTOI_BITS(32) ^~~~~~~~~~~~~~~~~~~~~~~~~ wireshark/wsutil/strtoi.c:83:12: note: expanded from macro 'DEFINE_WS_STRTOI_BITS' if (val < 0) \ ~~~ ^ wireshark/wsutil/strtoi.c:114:1: warning: The left operand of '<' is a garbage value DEFINE_WS_STRTOI_BITS(16) ^~~~~~~~~~~~~~~~~~~~~~~~~ wireshark/wsutil/strtoi.c:83:12: note: expanded from macro 'DEFINE_WS_STRTOI_BITS' if (val < 0) \ ~~~ ^ wireshark/wsutil/strtoi.c:115:1: warning: The left operand of '<' is a garbage value DEFINE_WS_STRTOI_BITS(8) ^~~~~~~~~~~~~~~~~~~~~~~~ wireshark/wsutil/strtoi.c:83:12: note: expanded from macro 'DEFINE_WS_STRTOI_BITS' if (val < 0) \ ~~~ ^ 3 warnings generated. Change-Id: I9eef0f2c0d4500531655a8b43509205a1f4e0684 Reviewed-on: https://code.wireshark.org/review/18640 Petri-Dish: Dario Lombardo <lomato@gmail.com> Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org> Reviewed-by: Alexis La Goutte <alexis.lagoutte@gmail.com>
231 lines
5.3 KiB
C
231 lines
5.3 KiB
C
/* strtoi.c
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* Utilities to convert strings to integers
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*
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* Copyright 2016, Dario Lombardo
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "config.h"
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#include "strtoi.h"
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#include <errno.h>
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gboolean ws_strtoi64(const gchar* str, const gchar** endptr, gint64* cint)
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{
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gchar* end;
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gint64 val;
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g_assert(cint);
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if (!str) {
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errno = EINVAL;
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return FALSE;
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}
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errno = 0;
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val = g_ascii_strtoll(str, &end, 10);
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if ((val == 0 && end == str) || (endptr == NULL && *end != '\0')) {
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*cint = 0;
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if (endptr != NULL)
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*endptr = end;
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errno = EINVAL;
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return FALSE;
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}
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if ((val == G_MAXINT64 || val == G_MININT64) && errno == ERANGE) {
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/*
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* Return the value, so our caller knows whether to
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* report the value as "too small" or "too large".
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*/
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*cint = val;
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if (endptr != NULL)
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*endptr = end;
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/* errno is already set */
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return FALSE;
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}
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if (endptr != NULL)
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*endptr = end;
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*cint = val;
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return TRUE;
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}
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#define DEFINE_WS_STRTOI_BITS(bits) \
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gboolean ws_strtoi##bits(const gchar* str, const gchar** endptr, gint##bits* cint) \
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{ \
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gint64 val = 0; \
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if (!ws_strtoi64(str, endptr, &val)) { \
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/* \
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* For ERANGE, return either G_MININT##bits or \
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* G_MAXINT##bits so our caller knows whether \
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* to report the value as "too small" or "too \
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* large". \
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* \
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* For other errors, return 0, for parallelism \
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* with ws_strtoi64(). \
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*/ \
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if (errno == ERANGE) { \
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if (val < 0) \
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*cint = G_MININT##bits; \
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else \
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*cint = G_MAXINT##bits; \
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} else \
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*cint = 0; \
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return FALSE; \
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} \
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if (val < G_MININT##bits) { \
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/* \
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* Return G_MININT##bits so our caller knows whether to \
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* report the value as "too small" or "too large". \
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*/ \
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*cint = G_MININT##bits; \
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errno = ERANGE; \
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return FALSE; \
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} \
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if (val > G_MAXINT##bits) { \
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/* \
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* Return G_MAXINT##bits so our caller knows whether to \
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* report the value as "too small" or "too large". \
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*/ \
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*cint = G_MAXINT##bits; \
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errno = ERANGE; \
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return FALSE; \
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} \
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*cint = (gint##bits)val; \
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return TRUE; \
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}
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DEFINE_WS_STRTOI_BITS(32)
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DEFINE_WS_STRTOI_BITS(16)
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DEFINE_WS_STRTOI_BITS(8)
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static gboolean ws_basestrtou64(const gchar* str, const gchar** endptr, guint64* cint, int base)
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{
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gchar* end;
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guint64 val;
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g_assert(cint);
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if (!str) {
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errno = EINVAL;
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return FALSE;
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}
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if (str[0] == '-' || str[0] == '+') {
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/*
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* Unsigned numbers don't have a sign.
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*/
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*cint = 0;
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if (endptr != NULL)
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*endptr = str;
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errno = EINVAL;
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return FALSE;
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}
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errno = 0;
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val = g_ascii_strtoull(str, &end, base);
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if ((val == 0 && end == str) || (endptr == NULL && *end != '\0')) {
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*cint = 0;
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if (endptr != NULL)
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*endptr = end;
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errno = EINVAL;
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return FALSE;
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}
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if (val == G_MAXUINT64 && errno == ERANGE) {
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/*
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* Return the value, because ws_strtoi64() does.
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*/
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*cint = val;
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if (endptr != NULL)
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*endptr = end;
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/* errno is already set */
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return FALSE;
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}
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if (endptr != NULL)
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*endptr = end;
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*cint = val;
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return TRUE;
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}
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gboolean ws_strtou64(const gchar* str, const gchar** endptr, guint64* cint)
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{
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return ws_basestrtou64(str, endptr, cint, 10);
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}
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gboolean ws_hexstrtou64(const gchar* str, const gchar** endptr, guint64* cint)
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{
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return ws_basestrtou64(str, endptr, cint, 16);
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}
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#define DEFINE_WS_STRTOU_BITS(bits) \
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static gboolean ws_basestrtou##bits(const gchar* str, const gchar** endptr, guint##bits* cint, int base) \
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{ \
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guint64 val; \
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if (!ws_basestrtou64(str, endptr, &val, base)) { \
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/* \
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* For ERANGE, return G_MAXUINT##bits for parallelism \
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* with ws_strtoi##bits(). \
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* \
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* For other errors, return 0, for parallelism \
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* with ws_basestrtou64(). \
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*/ \
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if (errno == ERANGE) \
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*cint = G_MAXUINT##bits; \
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else \
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*cint = 0; \
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return FALSE; \
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} \
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if (val > G_MAXUINT##bits) { \
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/* \
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* Return G_MAXUINT##bits for parallelism with \
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* ws_strtoi##bits(). \
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*/ \
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*cint = G_MAXUINT##bits; \
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errno = ERANGE; \
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return FALSE; \
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} \
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*cint = (guint##bits)val; \
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return TRUE; \
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} \
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\
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gboolean ws_strtou##bits(const gchar* str, const gchar** endptr, guint##bits* cint) \
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{ \
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return ws_basestrtou##bits(str, endptr, cint, 10); \
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} \
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\
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gboolean ws_hexstrtou##bits(const gchar* str, const gchar** endptr, guint##bits* cint) \
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{ \
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return ws_basestrtou##bits(str, endptr, cint, 16); \
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}
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DEFINE_WS_STRTOU_BITS(32)
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DEFINE_WS_STRTOU_BITS(16)
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DEFINE_WS_STRTOU_BITS(8)
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/*
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* Editor modelines - https://www.wireshark.org/tools/modelines.html
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*
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* Local variables:
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* c-basic-offset: 4
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* tab-width: 8
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* indent-tabs-mode: t
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* End:
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*
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* vi: set shiftwidth=4 tabstop=8 noexpandtab:
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* :indentSize=4:tabSize=8:noTabs=false:
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*/
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