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/*
Copyright (C) 2007 by Robert Knight <robertknight@gmail.com>
Rewritten for QT4 by e_k <e_k at users.sourceforge.net>, Copyright (C)2008
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA.
*/
// Own
#include "ShellCommand.h"
//some versions of gcc(4.3) require explicit include
#include <cstdlib>
using namespace Konsole;
// expands environment variables in 'text'
// function copied from kdelibs/kio/kio/kurlcompletion.cpp
static bool expandEnv(QString& text);
ShellCommand::ShellCommand(const QString& fullCommand)
{
bool inQuotes = false;
QString builder;
for ( int i = 0 ; i < fullCommand.count() ; i++ )
{
QChar ch = fullCommand[i];
const bool isLastChar = ( i == fullCommand.count() - 1 );
const bool isQuote = ( ch == '\'' || ch == '\"' );
if ( !isLastChar && isQuote )
inQuotes = !inQuotes;
else
{
if ( (!ch.isSpace() || inQuotes) && !isQuote )
builder.append(ch);
if ( (ch.isSpace() && !inQuotes) || ( i == fullCommand.count()-1 ) )
{
_arguments << builder;
builder.clear();
}
}
}
}
ShellCommand::ShellCommand(const QString& command , const QStringList& arguments)
{
_arguments = arguments;
if ( !_arguments.isEmpty() )
_arguments[0] == command;
}
QString ShellCommand::fullCommand() const
{
return _arguments.join(QChar(' '));
}
QString ShellCommand::command() const
{
if ( !_arguments.isEmpty() )
return _arguments[0];
else
return QString();
}
QStringList ShellCommand::arguments() const
{
return _arguments;
}
bool ShellCommand::isRootCommand() const
{
Q_ASSERT(0); // not implemented yet
return false;
}
bool ShellCommand::isAvailable() const
{
Q_ASSERT(0); // not implemented yet
return false;
}
QStringList ShellCommand::expand(const QStringList& items)
{
QStringList result;
foreach( QString item , items )
result << expand(item);
return result;
}
QString ShellCommand::expand(const QString& text)
{
QString result = text;
expandEnv(result);
return result;
}
/*
* expandEnv
*
* Expand environment variables in text. Escaped '$' characters are ignored.
* Return true if any variables were expanded
*/
static bool expandEnv( QString &text )
{
// Find all environment variables beginning with '$'
//
int pos = 0;
bool expanded = false;
while ( (pos = text.indexOf(QLatin1Char('$'), pos)) != -1 ) {
// Skip escaped '$'
//
if ( pos > 0 && text.at(pos-1) == QLatin1Char('\\') ) {
pos++;
}
// Variable found => expand
//
else {
// Find the end of the variable = next '/' or ' '
//
int pos2 = text.indexOf( QLatin1Char(' '), pos+1 );
int pos_tmp = text.indexOf( QLatin1Char('/'), pos+1 );
if ( pos2 == -1 || (pos_tmp != -1 && pos_tmp < pos2) )
pos2 = pos_tmp;
if ( pos2 == -1 )
pos2 = text.length();
// Replace if the variable is terminated by '/' or ' '
// and defined
//
if ( pos2 >= 0 ) {
int len = pos2 - pos;
QString key = text.mid( pos+1, len-1);
QString value =
QString::fromLocal8Bit( ::getenv(key.toLocal8Bit()) );
if ( !value.isEmpty() ) {
expanded = true;
text.replace( pos, len, value );
pos = pos + value.length();
}
else {
pos = pos2;
}
}
}
}
return expanded;
}
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