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83acbbd523
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@2072 a592a061-630c-0410-9148-cb99ea01b6c8
84 lines
1.6 KiB
C
84 lines
1.6 KiB
C
/* This file is part of
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* ======================================================
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*
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* LyX, The Document Processor
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*
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* Copyright 1995 Matthias Ettrich
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* Copyright 1995-2001 the LyX Team.
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*
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* ====================================================== */
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#include <config.h>
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#ifdef __GNUG__
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#pragma implementation "Variables.h"
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#endif
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#include "Variables.h"
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#include "support/LRegex.h"
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void Variables::set(string const & var, string const & val)
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{
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// We want to use const_iterator (Lgb)
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Vars::iterator cit = vars_.find(var);
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if (cit != vars_.end())
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vars_.erase(var);
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vars_[var] = val;;
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}
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string const Variables::get(string const & var) const
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{
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Vars::const_iterator cit = vars_.find(var);
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if (cit != vars_.end())
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return (*cit).second;
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else
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return string();
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}
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bool Variables::set(string const & var) const
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{
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Vars::const_iterator cit = vars_.find(var);
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return (cit != vars_.end());
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}
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string const Variables::expand(string const & s) const
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{
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string str(s);
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LRegex reg("\\$\\{\\(.*\\)\\}");
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if (!reg.exact_match(str))
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return str;
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LRegex::MatchPair match;
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string var;
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do {
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match = reg.first_match(str);
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var = str.substr(match.first,match.second);
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// we correct the match to take ${} in account.
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str.replace(match.first - 2, match.second + 3, get(var));
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} while (reg.exact_match(str));
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return str;
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}
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#ifdef TEST
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#include <iostream>
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using std::endl;
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using std::cout;
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int main() {
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Variables vars;
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vars.set("x", "hello");
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vars.set("y", "world");
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cout << vars.expand("${x}") << endl;
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}
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#endif
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