diff options
author | Dario Lombardo <lomato@gmail.com> | 2016-08-30 17:52:54 +0200 |
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committer | Dario Lombardo <lomato@gmail.com> | 2016-09-05 09:54:12 +0000 |
commit | ba981aced8c64ff405cd42b071264e2d9791444a (patch) | |
tree | 1abca00c094469dba7d158f962d34a21e1124cbf /wsutil/strtoi.c | |
parent | 87519e4c06260f78ecd55defb86bb20c3f4d7697 (diff) |
wsutil: add string to integer conversion utilities.
In the current code many functions have been used for convertion
(strtol, atoi, g_ascii_strtoll, etc). Those utilities want to be
the only, shared, way to convert integers.
Change-Id: I22ba1bf54e144e73a4728612a4437de5a2d339e2
Reviewed-on: https://code.wireshark.org/review/17414
Petri-Dish: Dario Lombardo <lomato@gmail.com>
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>
Reviewed-by: Peter Wu <peter@lekensteyn.nl>
Reviewed-by: Roland Knall <rknall@gmail.com>
Reviewed-by: Dario Lombardo <lomato@gmail.com>
Diffstat (limited to 'wsutil/strtoi.c')
-rw-r--r-- | wsutil/strtoi.c | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/wsutil/strtoi.c b/wsutil/strtoi.c new file mode 100644 index 0000000000..574743d6b5 --- /dev/null +++ b/wsutil/strtoi.c @@ -0,0 +1,122 @@ +/* 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: + */ |