mirror of
https://develop.openfoam.com/Development/openfoam.git
synced 2025-11-28 03:28:01 +00:00
962 lines
24 KiB
C
962 lines
24 KiB
C
/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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\\ / O peration |
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\\ / A nd | Copyright (C) 2011-2016 OpenFOAM Foundation
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\\/ M anipulation | Copyright (C) 2017 OpenCFD Ltd.
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-------------------------------------------------------------------------------
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License
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This file is part of OpenFOAM.
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OpenFOAM 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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OpenFOAM 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 or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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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 OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
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\*---------------------------------------------------------------------------*/
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#include "stringOps.H"
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#include "typeInfo.H"
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#include "OSspecific.H"
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#include "etcFiles.H"
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#include "StringStream.H"
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// * * * * * * * * * * * * * * * Local Functions * * * * * * * * * * * * * * //
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namespace Foam
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{
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// Standard handling of "~/", "./" etc.
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static void standardExpansions(Foam::string& s)
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{
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if (s.empty())
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{
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return;
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}
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if (s[0] == '.')
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{
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// Expand a lone '.' and an initial './' into cwd
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if (s.size() == 1)
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{
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s = cwd();
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}
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else if (s[1] == '/')
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{
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s.std::string::replace(0, 1, cwd());
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}
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}
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else if (s[0] == '~')
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{
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// Expand initial ~
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// ~/ => home directory
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// ~OpenFOAM => site/user OpenFOAM configuration directory
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// ~user => home directory for specified user
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string user;
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fileName file;
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const auto slash = s.find('/');
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if (slash == std::string::npos)
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{
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user = s.substr(1);
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}
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else
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{
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user = s.substr(1, slash - 1);
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file = s.substr(slash + 1);
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}
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// NB: be a bit lazy and expand ~unknownUser as an
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// empty string rather than leaving it untouched.
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// otherwise add extra test
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if (user == "OpenFOAM")
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{
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s = findEtcFile(file);
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}
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else
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{
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s = home(user)/file;
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}
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}
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}
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}
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//! \cond fileScope
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// Find the type/position of the ":-" or ":+" alternative values
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// Returns 0, '-', '+' corresponding to not-found or ':-' or ':+'
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static inline int findParameterAlternative
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(
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const std::string& s,
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std::string::size_type& pos,
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std::string::size_type endPos
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)
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{
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while (pos != std::string::npos)
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{
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pos = s.find(':', pos);
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if (pos != std::string::npos)
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{
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if (pos < endPos)
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{
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// in-range: check for '+' or '-' following the ':'
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const int altType = s[pos+1];
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if (altType == '+' || altType == '-')
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{
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return altType;
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}
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++pos; // unknown/unsupported - continue at next position
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}
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else
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{
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// out-of-range: abort
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pos = std::string::npos;
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}
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}
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}
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return 0;
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}
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//! \endcond
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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Foam::string Foam::stringOps::expand
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(
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const string& original,
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const HashTable<string, word, string::hash>& mapping,
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const char sigil
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)
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{
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string s(original);
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return inplaceExpand(s, mapping);
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}
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Foam::string& Foam::stringOps::inplaceExpand
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(
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string& s,
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const HashTable<string, word, string::hash>& mapping,
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const char sigil
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)
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{
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string::size_type begVar = 0;
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// Expand $VAR or ${VAR}
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// Repeat until nothing more is found
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while
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(
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(begVar = s.find(sigil, begVar)) != string::npos
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&& begVar < s.size()-1
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)
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{
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if (begVar == 0 || s[begVar-1] != '\\')
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{
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// Find end of first occurrence
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string::size_type endVar = begVar;
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string::size_type delim = 0;
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// The type/position of the ":-" or ":+" alternative values
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int altType = 0;
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string::size_type altPos = string::npos;
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if (s[begVar+1] == '{')
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{
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endVar = s.find('}', begVar);
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delim = 1;
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// check for ${parameter:-word} or ${parameter:+word}
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if (endVar != string::npos)
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{
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altPos = begVar;
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altType = findParameterAlternative(s, altPos, endVar);
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}
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}
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else
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{
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string::const_iterator iter = s.cbegin() + begVar + 1;
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// more generous in accepting keywords than for env variables
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while
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(
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iter != s.cend()
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&&
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(
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std::isalnum(*iter)
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|| *iter == '.'
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|| *iter == ':'
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|| *iter == '_'
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)
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)
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{
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++iter;
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++endVar;
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}
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}
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if (endVar == string::npos)
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{
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// likely parsed '${...' without closing '}' - abort
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break;
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}
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else if (endVar == begVar)
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{
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// parsed '${}' or $badChar - skip over
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begVar = endVar + 1;
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}
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else
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{
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const word varName
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(
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s.substr
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(
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begVar + 1 + delim,
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(
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(altPos == string::npos ? endVar : altPos)
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- begVar - 2*delim
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)
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),
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false
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);
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std::string altValue;
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if (altPos != string::npos)
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{
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// had ":-" or ":+" alternative value
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altValue = s.substr
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(
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altPos + 2,
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endVar - altPos - 2*delim
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);
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}
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auto fnd = mapping.cfind(varName);
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if (fnd.found())
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{
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if (altPos != string::npos && altType == '+')
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{
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// was found, use ":+" alternative
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s.std::string::replace
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(
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begVar,
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endVar - begVar + 1,
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altValue
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);
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begVar += altValue.size();
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}
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else
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{
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// was found, use value
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s.std::string::replace
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(
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begVar,
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endVar - begVar + 1,
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*fnd
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);
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begVar += (*fnd).size();
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}
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}
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else if (altPos != string::npos && altType == '-')
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{
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// was not found, use ":-" alternative
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s.std::string::replace
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(
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begVar,
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endVar - begVar + 1,
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altValue
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);
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begVar += altValue.size();
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}
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else
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{
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// substitute with nothing, also for ":+" alternative
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s.std::string::erase(begVar, endVar - begVar + 1);
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}
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}
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}
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else
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{
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++begVar;
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}
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}
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return s;
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}
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Foam::string Foam::stringOps::expand
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(
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const string& original,
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const dictionary& dict,
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const char sigil
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)
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{
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string s(original);
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return inplaceExpand(s, dict, sigil);
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}
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Foam::string Foam::stringOps::getVariable
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(
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const word& name,
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const dictionary& dict,
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const bool allowEnvVars,
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const bool allowEmpty
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)
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{
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string value;
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const entry* eptr = dict.lookupScopedEntryPtr
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(
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name,
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true,
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false
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);
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if (eptr)
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{
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OStringStream buf;
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// Force floating point numbers to be printed with at least
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// some decimal digits.
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buf << fixed;
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buf.precision(IOstream::defaultPrecision());
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// Fails for non-primitiveEntry
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dynamicCast<const primitiveEntry>(*eptr).write(buf, true);
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value = buf.str();
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}
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else if (allowEnvVars)
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{
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value = getEnv(name);
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if (value.empty() && !name.empty())
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{
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// The type/position of the ":-" or ":+" alternative values
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string::size_type altPos = 0;
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// check for parameter:-word or parameter:+word
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const int altType =
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findParameterAlternative(name, altPos, name.size()-1);
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if (altType)
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{
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value = getEnv
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(
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// var-name
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word(name.substr(0, altPos), false)
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);
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// ":-" or ":+" alternative value
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if (value.empty() ? (altType == '-') : (altType == '+'))
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{
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// alternative
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value = name.substr(altPos + 2);
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}
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}
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}
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}
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if (!allowEmpty && value.empty())
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{
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if (allowEnvVars)
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{
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FatalIOErrorInFunction
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(
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dict
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) << "Cannot find dictionary or environment variable "
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<< name << exit(FatalIOError);
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}
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else
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{
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FatalIOErrorInFunction
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(
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dict
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) << "Cannot find dictionary variable "
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<< name << exit(FatalIOError);
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}
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}
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return value;
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}
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|
|
|
|
Foam::string Foam::stringOps::expand
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(
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const string& s,
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string::size_type& index,
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const dictionary& dict,
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const bool allowEnvVars,
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const bool allowEmpty
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)
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{
|
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string newString;
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while (index < s.size())
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{
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if (s[index] == '$' && s[index+1] == '{')
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{
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// Recurse to parse variable name
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index += 2;
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string val = expand(s, index, dict, allowEnvVars, allowEmpty);
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newString.append(val);
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}
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else if (s[index] == '}')
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{
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return getVariable(newString, dict, allowEnvVars, allowEmpty);
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}
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else
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{
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newString.append(string(s[index]));
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}
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++index;
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}
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return newString;
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}
|
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|
|
|
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Foam::string& Foam::stringOps::inplaceExpand
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(
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string& s,
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const dictionary& dict,
|
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const bool allowEnvVars,
|
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const bool allowEmpty,
|
|
const char sigil
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|
)
|
|
{
|
|
string::size_type begVar = 0;
|
|
|
|
// Expand $VAR or ${VAR}
|
|
// Repeat until nothing more is found
|
|
while
|
|
(
|
|
(begVar = s.find(sigil, begVar)) != string::npos
|
|
&& begVar < s.size()-1
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|
)
|
|
{
|
|
if (begVar == 0 || s[begVar-1] != '\\')
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{
|
|
if (s[begVar+1] == '{')
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{
|
|
// Recursive variable expansion mode
|
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auto stringStart = begVar;
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begVar += 2;
|
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string varValue
|
|
(
|
|
expand
|
|
(
|
|
s,
|
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begVar,
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dict,
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|
allowEnvVars,
|
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allowEmpty
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|
)
|
|
);
|
|
|
|
s.std::string::replace
|
|
(
|
|
stringStart,
|
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begVar - stringStart + 1,
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varValue
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);
|
|
|
|
begVar = stringStart+varValue.size();
|
|
}
|
|
else
|
|
{
|
|
string::const_iterator iter = s.cbegin() + begVar + 1;
|
|
string::size_type endVar = begVar;
|
|
|
|
// more generous in accepting keywords than for env variables
|
|
while
|
|
(
|
|
iter != s.cend()
|
|
&&
|
|
(
|
|
std::isalnum(*iter)
|
|
|| *iter == '.'
|
|
|| *iter == ':'
|
|
|| *iter == '_'
|
|
)
|
|
)
|
|
{
|
|
++iter;
|
|
++endVar;
|
|
}
|
|
|
|
const word varName
|
|
(
|
|
s.substr
|
|
(
|
|
begVar + 1,
|
|
endVar - begVar
|
|
),
|
|
false
|
|
);
|
|
|
|
string varValue
|
|
(
|
|
getVariable
|
|
(
|
|
varName,
|
|
dict,
|
|
allowEnvVars,
|
|
allowEmpty
|
|
)
|
|
);
|
|
|
|
s.std::string::replace
|
|
(
|
|
begVar,
|
|
varName.size()+1,
|
|
varValue
|
|
);
|
|
begVar += varValue.size();
|
|
}
|
|
}
|
|
else
|
|
{
|
|
++begVar;
|
|
}
|
|
}
|
|
|
|
// Standard handling of "~/", "./" etc.
|
|
standardExpansions(s);
|
|
|
|
return s;
|
|
}
|
|
|
|
|
|
Foam::string& Foam::stringOps::inplaceExpand
|
|
(
|
|
string& s,
|
|
const dictionary& dict,
|
|
const char sigil
|
|
)
|
|
{
|
|
string::size_type begVar = 0;
|
|
|
|
// Expand $VAR or ${VAR}
|
|
// Repeat until nothing more is found
|
|
while
|
|
(
|
|
(begVar = s.find(sigil, begVar)) != string::npos
|
|
&& begVar < s.size()-1
|
|
)
|
|
{
|
|
if (begVar == 0 || s[begVar-1] != '\\')
|
|
{
|
|
// Find end of first occurrence
|
|
string::size_type endVar = begVar;
|
|
string::size_type delim = 0;
|
|
|
|
if (s[begVar+1] == '{')
|
|
{
|
|
endVar = s.find('}', begVar);
|
|
delim = 1;
|
|
}
|
|
else
|
|
{
|
|
string::const_iterator iter = s.cbegin() + begVar + 1;
|
|
|
|
// more generous in accepting keywords than for env variables
|
|
while
|
|
(
|
|
iter != s.cend()
|
|
&&
|
|
(
|
|
std::isalnum(*iter)
|
|
|| *iter == '.'
|
|
|| *iter == ':'
|
|
|| *iter == '_'
|
|
)
|
|
)
|
|
{
|
|
++iter;
|
|
++endVar;
|
|
}
|
|
}
|
|
|
|
if (endVar == string::npos)
|
|
{
|
|
// likely parsed '${...' without closing '}' - abort
|
|
break;
|
|
}
|
|
else if (endVar == begVar)
|
|
{
|
|
// parsed '${}' or $badChar - skip over
|
|
begVar = endVar + 1;
|
|
}
|
|
else
|
|
{
|
|
const word varName
|
|
(
|
|
s.substr
|
|
(
|
|
begVar + 1 + delim,
|
|
endVar - begVar - 2*delim
|
|
),
|
|
false
|
|
);
|
|
|
|
|
|
// Lookup in the dictionary without wildcards.
|
|
// See note in primitiveEntry
|
|
const entry* eptr = dict.lookupScopedEntryPtr
|
|
(
|
|
varName,
|
|
true,
|
|
false
|
|
);
|
|
|
|
// if defined - copy its entries
|
|
if (eptr)
|
|
{
|
|
OStringStream buf;
|
|
// Force floating point numbers to be printed with at least
|
|
// some decimal digits.
|
|
buf << fixed;
|
|
buf.precision(IOstream::defaultPrecision());
|
|
if (eptr->isDict())
|
|
{
|
|
eptr->dict().write(buf, false);
|
|
}
|
|
else
|
|
{
|
|
// Fail for non-primitiveEntry
|
|
dynamicCast<const primitiveEntry>
|
|
(
|
|
*eptr
|
|
).write(buf, true);
|
|
}
|
|
|
|
s.std::string::replace
|
|
(
|
|
begVar,
|
|
endVar - begVar + 1,
|
|
buf.str()
|
|
);
|
|
begVar += buf.str().size();
|
|
}
|
|
else
|
|
{
|
|
// not defined - leave original string untouched
|
|
begVar = endVar + 1;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
++begVar;
|
|
}
|
|
}
|
|
|
|
return s;
|
|
}
|
|
|
|
|
|
Foam::string Foam::stringOps::expand
|
|
(
|
|
const string& original,
|
|
const bool allowEmpty
|
|
)
|
|
{
|
|
string s(original);
|
|
return inplaceExpand(s, allowEmpty);
|
|
}
|
|
|
|
|
|
Foam::string& Foam::stringOps::inplaceExpand
|
|
(
|
|
string& s,
|
|
const bool allowEmpty
|
|
)
|
|
{
|
|
string::size_type begVar = 0;
|
|
|
|
// Expand $VARS
|
|
// Repeat until nothing more is found
|
|
while
|
|
(
|
|
(begVar = s.find('$', begVar)) != string::npos
|
|
&& begVar < s.size()-1
|
|
)
|
|
{
|
|
if (begVar == 0 || s[begVar-1] != '\\')
|
|
{
|
|
// Find end of first occurrence
|
|
string::size_type endVar = begVar;
|
|
string::size_type delim = 0;
|
|
|
|
// The type/position of the ":-" or ":+" alternative values
|
|
int altType = 0;
|
|
string::size_type altPos = string::npos;
|
|
|
|
if (s[begVar+1] == '{')
|
|
{
|
|
endVar = s.find('}', begVar);
|
|
delim = 1;
|
|
|
|
// check for ${parameter:-word} or ${parameter:+word}
|
|
if (endVar != string::npos)
|
|
{
|
|
altPos = begVar;
|
|
altType = findParameterAlternative(s, altPos, endVar);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
string::const_iterator iter = s.cbegin() + begVar + 1;
|
|
|
|
while
|
|
(
|
|
iter != s.cend()
|
|
&& (std::isalnum(*iter) || *iter == '_')
|
|
)
|
|
{
|
|
++iter;
|
|
++endVar;
|
|
}
|
|
}
|
|
|
|
|
|
if (endVar == string::npos)
|
|
{
|
|
// likely parsed '${...' without closing '}' - abort
|
|
break;
|
|
}
|
|
else if (endVar == begVar)
|
|
{
|
|
// parsed '${}' or $badChar - skip over
|
|
begVar = endVar + 1;
|
|
}
|
|
else
|
|
{
|
|
const word varName
|
|
(
|
|
s.substr
|
|
(
|
|
begVar + 1 + delim,
|
|
(
|
|
(altPos == string::npos ? endVar : altPos)
|
|
- begVar - 2*delim
|
|
)
|
|
),
|
|
false
|
|
);
|
|
|
|
std::string altValue;
|
|
if (altPos != string::npos)
|
|
{
|
|
// had ":-" or ":+" alternative value
|
|
altValue = s.substr
|
|
(
|
|
altPos + 2,
|
|
endVar - altPos - 2*delim
|
|
);
|
|
}
|
|
|
|
const string varValue = getEnv(varName);
|
|
if (varValue.size())
|
|
{
|
|
if (altPos != string::npos && altType == '+')
|
|
{
|
|
// was found, use ":+" alternative
|
|
s.std::string::replace
|
|
(
|
|
begVar,
|
|
endVar - begVar + 1,
|
|
altValue
|
|
);
|
|
begVar += altValue.size();
|
|
}
|
|
else
|
|
{
|
|
// was found, use value
|
|
s.std::string::replace
|
|
(
|
|
begVar,
|
|
endVar - begVar + 1,
|
|
varValue
|
|
);
|
|
begVar += varValue.size();
|
|
}
|
|
}
|
|
else if (altPos != string::npos)
|
|
{
|
|
// use ":-" or ":+" alternative values
|
|
if (altType == '-')
|
|
{
|
|
// was not found, use ":-" alternative
|
|
s.std::string::replace
|
|
(
|
|
begVar,
|
|
endVar - begVar + 1,
|
|
altValue
|
|
);
|
|
begVar += altValue.size();
|
|
}
|
|
else
|
|
{
|
|
// was not found, ":+" alternative implies
|
|
// substitute with nothing
|
|
s.std::string::erase(begVar, endVar - begVar + 1);
|
|
}
|
|
}
|
|
else if (allowEmpty)
|
|
{
|
|
s.std::string::erase(begVar, endVar - begVar + 1);
|
|
}
|
|
else
|
|
{
|
|
FatalErrorInFunction
|
|
<< "Unknown variable name '" << varName << "'"
|
|
<< exit(FatalError);
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
++begVar;
|
|
}
|
|
}
|
|
|
|
// Standard handling of "~/", "./" etc.
|
|
standardExpansions(s);
|
|
|
|
return s;
|
|
}
|
|
|
|
|
|
bool Foam::stringOps::inplaceReplaceVar(string& s, const word& varName)
|
|
{
|
|
if (s.empty() || varName.empty())
|
|
{
|
|
return false;
|
|
}
|
|
|
|
const string content(getEnv(varName));
|
|
if (content.empty())
|
|
{
|
|
return false;
|
|
}
|
|
|
|
const std::string::size_type i = s.find(content);
|
|
if (i == std::string::npos)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
s.replace(i, content.size(), string("${" + varName + "}"));
|
|
return true;
|
|
}
|
|
|
|
|
|
Foam::string Foam::stringOps::trimLeft(const string& s)
|
|
{
|
|
if (!s.empty())
|
|
{
|
|
string::size_type beg = 0;
|
|
while (beg < s.size() && std::isspace(s[beg]))
|
|
{
|
|
++beg;
|
|
}
|
|
|
|
if (beg)
|
|
{
|
|
return s.substr(beg);
|
|
}
|
|
}
|
|
|
|
return s;
|
|
}
|
|
|
|
|
|
Foam::string& Foam::stringOps::inplaceTrimLeft(string& s)
|
|
{
|
|
if (!s.empty())
|
|
{
|
|
string::size_type beg = 0;
|
|
while (beg < s.size() && std::isspace(s[beg]))
|
|
{
|
|
++beg;
|
|
}
|
|
|
|
if (beg)
|
|
{
|
|
s.erase(0, beg);
|
|
}
|
|
}
|
|
|
|
return s;
|
|
}
|
|
|
|
|
|
Foam::string Foam::stringOps::trimRight(const string& s)
|
|
{
|
|
if (!s.empty())
|
|
{
|
|
string::size_type sz = s.size();
|
|
while (sz && std::isspace(s[sz-1]))
|
|
{
|
|
--sz;
|
|
}
|
|
|
|
if (sz < s.size())
|
|
{
|
|
return s.substr(0, sz);
|
|
}
|
|
}
|
|
|
|
return s;
|
|
}
|
|
|
|
|
|
Foam::string& Foam::stringOps::inplaceTrimRight(string& s)
|
|
{
|
|
if (!s.empty())
|
|
{
|
|
string::size_type sz = s.size();
|
|
while (sz && std::isspace(s[sz-1]))
|
|
{
|
|
--sz;
|
|
}
|
|
|
|
s.resize(sz);
|
|
}
|
|
|
|
return s;
|
|
}
|
|
|
|
|
|
Foam::string Foam::stringOps::trim(const string& original)
|
|
{
|
|
return trimLeft(trimRight(original));
|
|
}
|
|
|
|
|
|
Foam::string& Foam::stringOps::inplaceTrim(string& s)
|
|
{
|
|
inplaceTrimRight(s);
|
|
inplaceTrimLeft(s);
|
|
|
|
return s;
|
|
}
|
|
|
|
|
|
// ************************************************************************* //
|