89 lines
1.9 KiB
C++
89 lines
1.9 KiB
C++
//
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// VMime library (http://www.vmime.org)
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// Copyright (C) 2002-2005 Vincent Richard <vincent@vincent-richard.net>
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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 as
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// published by the Free Software Foundation; either version 2 of
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// 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 GNU
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// 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., 675 Mass Ave, Cambridge, MA 02139, USA.
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//
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#ifndef VMIME_PARSERHELPERS_HPP_INCLUDED
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#define VMIME_PARSERHELPERS_HPP_INCLUDED
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#include "vmime/types.hpp"
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#include "vmime/utility/stringUtils.hpp"
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#include <algorithm>
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namespace vmime
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{
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class parserHelpers
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{
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public:
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static const bool isSpace(const char_t c)
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{
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return (c == ' ' || c == '\t' || c == '\n' || c == '\r');
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}
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static const bool isDigit(const char_t c)
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{
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return (c >= '0' && c <= '9');
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}
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static const bool isAlpha(const char_t c)
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{
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return ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z'));
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}
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static const char_t toLower(const char_t c)
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{
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if (c >= 'A' && c <= 'Z')
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return ('a' + (c - 'A'));
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else
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return c;
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}
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// Checks whether a character is in the 7-bit US-ASCII charset
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static const bool isAscii(const char_t c)
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{
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const unsigned int x = static_cast <unsigned int>(c);
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return (x <= 127);
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}
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// Checks whether a character has a visual representation
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static const bool isPrint(const char_t c)
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{
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const unsigned int x = static_cast <unsigned int>(c);
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return (x >= 0x20 && x <= 0x7E);
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}
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};
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} // vmime
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#endif // VMIME_PARSERHELPERS_HPP_INCLUDED
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