126d9bc103
On 32bit archetectures, long int = int the current check for detecting values that overflow int will fail. Conversion routings should check errno. * bin/common_conv.cc, bin/common_range.cc: Here.
92 lines
2.7 KiB
C++
92 lines
2.7 KiB
C++
// -*- coding: utf-8 -*-
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// Copyright (C) 2012, 2014, 2016, 2023 Laboratoire de Recherche et
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// Développement de l'Epita (LRDE).
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//
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// This file is part of Spot, a model checking library.
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//
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// Spot is free software; you can redistribute it and/or modify it
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// under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 3 of the License, or
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// (at your option) any later version.
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//
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// Spot is distributed in the hope that it will be useful, but WITHOUT
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// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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// or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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// 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, see <http://www.gnu.org/licenses/>.
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#include "common_sys.hh"
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#include "error.h"
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#include "common_range.hh"
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#include <iostream>
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#include <cstdlib>
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// The range should have the form INT..INT or INT:INT, with
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// "42" standing for "42..42",
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// "..42" meaning "missing_left..42".
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// and "42.." meaning "42..missing_right".
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//
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// As an exception, if missing_right is 0, then missing right bounds
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// are disallowed.
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range
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parse_range(const char* str, int missing_left, int missing_right)
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{
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range res;
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char* end;
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errno = 0;
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long lres = strtol(str, &end, 10);
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res.min = lres;
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if (res.min != lres || errno == ERANGE)
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error(2, 0, "start of range '%s' is too large for an int.", str);
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if (end == str)
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{
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// No leading number. It's OK as long as the string is not
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// empty.
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if (!*end)
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error(2, 0, "invalid empty range");
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res.min = missing_left;
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}
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if (!*end)
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{
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// Only one number.
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res.max = res.min;
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}
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else
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{
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// Skip : or ..
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if (end[0] == ':')
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++end;
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else if (end[0] == '.' && end[1] == '.')
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end += 2;
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if (!*end && missing_right != 0)
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{
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res.max = missing_right;
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}
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else
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{
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// Parse the next integer.
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char* end2;
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errno = 0;
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lres = strtol(end, &end2, 10);
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res.max = lres;
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if (res.max != lres || errno == ERANGE)
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error(2, 0, "end of range '%s' is too large for an int.", str);
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if (str == end2)
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error(2, 0, "invalid range '%s' "
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"(should start with digits, dots, or colon)", str);
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if (end == end2)
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error(2, 0, "invalid range '%s' (missing end?)", str);
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if (*end2)
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error(2, 0, "invalid range '%s' (trailing garbage?)", str);
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}
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}
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if (res.min < 0 || res.max < 0)
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error(2, 0, "invalid range '%s': values must be positive", str);
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return res;
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}
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