Ichthyostega
61b6868bff
OMG, what was all this about? OK... this cant possibly work this way. At least we need to trim after splitting the attributes. But this is not enough, we want the value, which implies to make the type flexible (since we cant return a const& to a substring extracted on-the-fly)
85 lines
2.5 KiB
C++
85 lines
2.5 KiB
C++
/*
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util.cpp - helper functions implementation
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Copyright (C) Lumiera.org
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2008, Hermann Vosseler <Ichthyostega@web.de>
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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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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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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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#include "lib/util.hpp"
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#include <boost/algorithm/string.hpp>
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#include <functional>
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#include <boost/bind.hpp> // we need operator! for bind-expressions
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using boost::algorithm::trim_right_copy_if;
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using boost::algorithm::is_any_of;
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using boost::algorithm::is_alnum;
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using boost::algorithm::is_space;
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namespace util {
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using std::function;
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typedef function<bool(string::value_type)> ChPredicate;
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ChPredicate operator! (ChPredicate p) { return ! bind(p,_1); }
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// character classes used for sanitising a string
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ChPredicate isValid (is_alnum() || is_any_of("-_.:+$'()@")); ///< characters to be retained
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ChPredicate isPunct (is_space() || is_any_of(",;#*~´`?\\=/&%![]{}")); ///< punctuation to be replaced by '_'
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string
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sanitise (const string& org)
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{
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string res (trim_right_copy_if(org, !isValid ));
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string::iterator j = res.begin();
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string::const_iterator i = org.begin();
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string::const_iterator e = i + (res.length());
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while ( i != e )
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{
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while ( i != e && !isValid (*i) ) ++i;
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while ( i != e && isValid (*i) ) *(j++) = *(i++);
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if ( i != e && isPunct (*i) )
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{
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*j++ = '_';
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do ++i;
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while ( i != e && isPunct (*i));
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}
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}
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res.erase(j,res.end());
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return res;
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}
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/**
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* @remarks this function just forwards to boost::algorithm::trim_copy.
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* Use this call when boost header inclusion is an issue, otherwise
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* a direct invocation is likely to perform better, due to inlining.
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*/
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string
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trim (string const& org)
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{
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return boost::algorithm::trim_copy (org);
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}
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} // namespace util
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