mirror of
https://bitbucket.org/smil3y/kdelibs.git
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357 lines
9.8 KiB
C++
357 lines
9.8 KiB
C++
/*
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This file is part of the KDE libraries
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Copyright (c) 2002-2003 Oswald Buddenhagen <ossi@kde.org>
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Copyright (c) 2003 Waldo Bastian <bastian@kde.org>
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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 Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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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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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#include "kmacroexpander_p.h"
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#include "kdebug.h"
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#include <QtCore/QHash>
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#include <QtCore/QStringList>
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KMacroExpanderBase::KMacroExpanderBase( QChar c ) : d(new KMacroExpanderBasePrivate(c))
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{
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}
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KMacroExpanderBase::~KMacroExpanderBase()
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{
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delete d;
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}
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void
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KMacroExpanderBase::setEscapeChar( QChar c )
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{
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d->escapechar = c;
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}
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QChar
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KMacroExpanderBase::escapeChar() const
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{
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return d->escapechar;
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}
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void KMacroExpanderBase::expandMacros( QString &str )
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{
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int pos;
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int len;
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ushort ec = d->escapechar.unicode();
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QStringList rst;
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QString rsts;
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for (pos = 0; pos < str.length(); ) {
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if (ec != 0) {
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if (str.unicode()[pos].unicode() != ec)
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goto nohit;
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if (!(len = expandEscapedMacro( str, pos, rst )))
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goto nohit;
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} else {
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if (!(len = expandPlainMacro( str, pos, rst )))
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goto nohit;
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}
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if (len < 0) {
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pos -= len;
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continue;
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}
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rsts = rst.join( QLatin1String(" ") );
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rst.clear();
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str.replace( pos, len, rsts );
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pos += rsts.length();
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continue;
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nohit:
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pos++;
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}
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}
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bool KMacroExpanderBase::expandMacrosShellQuote( QString &str )
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{
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int pos = 0;
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return expandMacrosShellQuote( str, pos ) && pos == str.length();
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}
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int KMacroExpanderBase::expandPlainMacro( const QString &, int, QStringList & )
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{ qFatal( "KMacroExpanderBase::expandPlainMacro called!" ); return 0; }
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int KMacroExpanderBase::expandEscapedMacro( const QString &, int, QStringList & )
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{ qFatal( "KMacroExpanderBase::expandEscapedMacro called!" ); return 0; }
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//////////////////////////////////////////////////
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template <typename KT, typename VT>
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class KMacroMapExpander : public KMacroExpanderBase {
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public:
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KMacroMapExpander( const QHash<KT,VT> &map, QChar c = QLatin1Char('%') ) :
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KMacroExpanderBase( c ), macromap( map ) {}
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protected:
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virtual int expandPlainMacro( const QString &str, int pos, QStringList &ret );
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virtual int expandEscapedMacro( const QString &str, int pos, QStringList &ret );
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private:
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QHash<KT,VT> macromap;
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};
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static QStringList &operator+=( QStringList &s, const QString &n) { s << n; return s; }
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////////
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static bool
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isIdentifier( ushort c )
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{
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return c == '_' ||
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(c >= 'A' && c <= 'Z') ||
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(c >= 'a' && c <= 'z') ||
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(c >= '0' && c <= '9');
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}
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////////
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template <typename VT>
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class KMacroMapExpander<QChar,VT> : public KMacroExpanderBase {
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public:
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KMacroMapExpander( const QHash<QChar,VT> &map, QChar c = QLatin1Char('%') ) :
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KMacroExpanderBase( c ), macromap( map ) {}
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protected:
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virtual int expandPlainMacro( const QString &str, int pos, QStringList &ret );
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virtual int expandEscapedMacro( const QString &str, int pos, QStringList &ret );
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private:
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QHash<QChar,VT> macromap;
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};
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template <typename VT>
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int
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KMacroMapExpander<QChar,VT>::expandPlainMacro( const QString &str, int pos, QStringList &ret )
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{
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typename QHash<QChar,VT>::const_iterator it = macromap.constFind(str.unicode()[pos]);
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if (it != macromap.constEnd()) {
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ret += it.value();
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return 1;
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}
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return 0;
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}
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template <typename VT>
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int
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KMacroMapExpander<QChar,VT>::expandEscapedMacro( const QString &str, int pos, QStringList &ret )
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{
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if (str.length() <= pos + 1)
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return 0;
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if (str.unicode()[pos + 1] == escapeChar()) {
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ret += QString( escapeChar() );
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return 2;
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}
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typename QHash<QChar,VT>::const_iterator it = macromap.constFind(str.unicode()[pos + 1]);
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if (it != macromap.constEnd()) {
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ret += it.value();
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return 2;
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}
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return 0;
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}
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template <typename VT>
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class KMacroMapExpander<QString,VT> : public KMacroExpanderBase {
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public:
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KMacroMapExpander( const QHash<QString,VT> &map, QChar c = QLatin1Char('%') ) :
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KMacroExpanderBase( c ), macromap( map ) {}
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protected:
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virtual int expandPlainMacro( const QString &str, int pos, QStringList &ret );
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virtual int expandEscapedMacro( const QString &str, int pos, QStringList &ret );
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private:
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QHash<QString,VT> macromap;
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};
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template <typename VT>
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int
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KMacroMapExpander<QString,VT>::expandPlainMacro( const QString &str, int pos, QStringList &ret )
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{
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if (pos && isIdentifier( str.unicode()[pos - 1].unicode() ))
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return 0;
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int sl;
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for (sl = 0; isIdentifier( str.unicode()[pos + sl].unicode() ); sl++)
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;
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if (!sl)
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return 0;
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typename QHash<QString,VT>::const_iterator it =
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macromap.constFind( str.mid( pos, sl ) );
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if (it != macromap.constEnd()) {
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ret += it.value();
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return sl;
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}
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return 0;
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}
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template <typename VT>
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int
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KMacroMapExpander<QString,VT>::expandEscapedMacro( const QString &str, int pos, QStringList &ret )
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{
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if (str.length() <= pos + 1)
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return 0;
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if (str.unicode()[pos + 1] == escapeChar()) {
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ret += QString( escapeChar() );
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return 2;
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}
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int sl, rsl, rpos;
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if (str.unicode()[pos + 1].unicode() == '{') {
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rpos = pos + 2;
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if ((sl = str.indexOf(QLatin1Char('}'), rpos)) < 0)
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return 0;
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sl -= rpos;
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rsl = sl + 3;
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} else {
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rpos = pos + 1;
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for (sl = 0; isIdentifier( str.unicode()[rpos + sl].unicode() ); ++sl)
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;
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rsl = sl + 1;
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}
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if (!sl)
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return 0;
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typename QHash<QString,VT>::const_iterator it =
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macromap.constFind( str.mid( rpos, sl ) );
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if (it != macromap.constEnd()) {
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ret += it.value();
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return rsl;
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}
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return 0;
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}
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////////////
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int
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KCharMacroExpander::expandPlainMacro( const QString &str, int pos, QStringList &ret )
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{
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if (expandMacro( str.unicode()[pos], ret ))
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return 1;
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return 0;
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}
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int
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KCharMacroExpander::expandEscapedMacro( const QString &str, int pos, QStringList &ret )
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{
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if (str.length() <= pos + 1)
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return 0;
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if (str.unicode()[pos + 1] == escapeChar()) {
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ret += QString( escapeChar() );
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return 2;
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}
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if (expandMacro( str.unicode()[pos + 1], ret ))
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return 2;
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return 0;
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}
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int
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KWordMacroExpander::expandPlainMacro( const QString &str, int pos, QStringList &ret )
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{
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if (pos && isIdentifier( str.unicode()[pos - 1].unicode() ))
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return 0;
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int sl;
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for (sl = 0; isIdentifier( str.unicode()[pos + sl].unicode() ); sl++)
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;
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if (!sl)
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return 0;
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if (expandMacro( str.mid( pos, sl ), ret ))
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return sl;
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return 0;
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}
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int
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KWordMacroExpander::expandEscapedMacro( const QString &str, int pos, QStringList &ret )
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{
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if (str.length() <= pos + 1)
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return 0;
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if (str.unicode()[pos + 1] == escapeChar()) {
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ret += QString( escapeChar() );
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return 2;
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}
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int sl, rsl, rpos;
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if (str.unicode()[pos + 1].unicode() == '{') {
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rpos = pos + 2;
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if ((sl = str.indexOf(QLatin1Char('}'), rpos)) < 0)
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return 0;
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sl -= rpos;
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rsl = sl + 3;
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} else {
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rpos = pos + 1;
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for (sl = 0; isIdentifier( str.unicode()[rpos + sl].unicode() ); ++sl)
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;
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rsl = sl + 1;
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}
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if (!sl)
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return 0;
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if (expandMacro( str.mid( rpos, sl ), ret ))
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return rsl;
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return 0;
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}
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////////////
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template <typename KT, typename VT>
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inline QString
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TexpandMacros( const QString &ostr, const QHash<KT,VT> &map, QChar c )
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{
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QString str( ostr );
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KMacroMapExpander<KT,VT> kmx( map, c );
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kmx.expandMacros( str );
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return str;
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}
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template <typename KT, typename VT>
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inline QString
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TexpandMacrosShellQuote( const QString &ostr, const QHash<KT,VT> &map, QChar c )
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{
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QString str( ostr );
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KMacroMapExpander<KT,VT> kmx( map, c );
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if (!kmx.expandMacrosShellQuote( str ))
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return QString();
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return str;
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}
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// public API
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namespace KMacroExpander {
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QString expandMacros( const QString &ostr, const QHash<QChar,QString> &map, QChar c )
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{ return TexpandMacros( ostr, map, c ); }
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QString expandMacrosShellQuote( const QString &ostr, const QHash<QChar,QString> &map, QChar c )
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{ return TexpandMacrosShellQuote( ostr, map, c ); }
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QString expandMacros( const QString &ostr, const QHash<QString,QString> &map, QChar c )
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{ return TexpandMacros( ostr, map, c ); }
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QString expandMacrosShellQuote( const QString &ostr, const QHash<QString,QString> &map, QChar c )
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{ return TexpandMacrosShellQuote( ostr, map, c ); }
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QString expandMacros( const QString &ostr, const QHash<QChar,QStringList> &map, QChar c )
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{ return TexpandMacros( ostr, map, c ); }
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QString expandMacrosShellQuote( const QString &ostr, const QHash<QChar,QStringList> &map, QChar c )
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{ return TexpandMacrosShellQuote( ostr, map, c ); }
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QString expandMacros( const QString &ostr, const QHash<QString,QStringList> &map, QChar c )
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{ return TexpandMacros( ostr, map, c ); }
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QString expandMacrosShellQuote( const QString &ostr, const QHash<QString,QStringList> &map, QChar c )
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{ return TexpandMacrosShellQuote( ostr, map, c ); }
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} // namespace
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