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// -*- mode: c++; c-basic-offset:4 -*-
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// This file is part of libdap, A C++ implementation of the OPeNDAP Data
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// Access Protocol.
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// Copyright (c) 2002,2003 OPeNDAP, Inc.
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// Author: James Gallagher <jgallagher@opendap.org>
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2.1 of the License, or (at your option) any later version.
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//
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// This library 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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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; 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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// You can contact OPeNDAP, Inc. at PO Box 112, Saunderstown, RI. 02874-0112.
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// (c) COPYRIGHT URI/MIT 1999
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// Please read the full copyright statement in the file COPYRIGHT_URI.
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//
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// Authors:
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// jhrg,jimg James Gallagher <jgallagher@gso.uri.edu>
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// Declarations for identifier escaping and un-escaping functions.
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#ifndef _escaping_h
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#define _escaping_h
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#include <string>
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using std::string;
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namespace libdap
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{
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string hexstring(unsigned char val);
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string unhexstring(string s);
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string octstring(unsigned char val);
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string unoctstring(string s);
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// The original set of allowed characters was: [0-9a-zA-Z_%]
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// The characters accepted in DAP2 ids: [-+a-zA-Z0-9_/%.\\#*]; everything
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// else must be escaped. Note that for some inscrutable reason, we've been
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// escaping '*'.
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// The characters allowable in an id in a URI (see RFC 2396):
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// [-A-Za-z0-9_.!~*'()].
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string id2www(string s, const string &allowable = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-+_/.\\*");
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// This is what DAP2 allows in a ce: [-+a-zA-Z0-9_/%.\\#]
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string id2www_ce(string s, const string &allowable = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-+_/.\\");
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string www2id(const string &in, const string &escape = "%",
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const string &except = "");
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// Include these for compatibility with the old names. 7/19/2001 jhrg
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#define id2dods id2www
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#define dods2id www2id
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string octal_to_hex(const string &octal_digits);
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string id2xml(string in, const string ¬_allowed = "><&'\"");
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string xml2id(string in);
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string esc2underscore(string s);
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string char2ASCII(string s, const string escape = "%[0-7][0-9a-fA-F]");
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string escattr(string s);
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string unescattr(string s);
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string munge_error_message(string msg);
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string unescape_double_quotes(string source);
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string escape_double_quotes(string source);
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} // namespace libdap
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#endif // _escaping_h
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