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/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the tools applications of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "proparser.h"
#include <qdir.h>
#include <qfile.h>
#include <qfileinfo.h>
#include <qregexp.h>
#include <qstringlist.h>
#include <qtextstream.h>
#ifdef Q_OS_UNIX
#include <unistd.h>
#endif
#ifdef Q_OS_WIN32
#define QT_POPEN _popen
#else
#define QT_POPEN popen
#endif
QString loadFile( const QString &fileName )
{
QFile file( fileName );
if ( !file.open(QIODevice::ReadOnly) ) {
fprintf( stderr, "error: Cannot load '%s': %s\n",
file.fileName().toLatin1().constData(),
file.errorString().toLatin1().constData() );
return QString();
}
QTextStream in( &file );
return in.readAll();
}
QMap<QString, QString> proFileTagMap( const QString& text )
{
QString t = text;
QMap<QString, QString> tagMap;
bool stillProcess = true; // If include() has a $$tag then we need to reprocess
while (stillProcess) {
/*
Strip any commments before we try to include. We
still need to do it after we include to make sure the
included file does not have comments
*/
t.replace( QRegExp(QString("#[^\n]*\n")), QString(" ") );
/*
Process include() commands.
$$PWD is a special case so we have to change it while
we know where the included file is.
*/
QRegExp callToInclude("include\\s*\\(\\s*([^()\\s]+)\\s*\\)");
int i = 0;
while ( (i = callToInclude.indexIn(t, i)) != -1 ) {
bool doneWithVar = false;
QString fileName = callToInclude.cap(1);
QString after = fileName.replace("$$PWD", QDir::currentPath());
if (!tagMap.isEmpty() && after.contains("$$")) {
QRegExp var( "\\$\\$[({]?([a-zA-Z0-9_]+)[)}]?" );
int ii = 0;
while ((ii = after.indexOf(var, ii)) != -1) {
if (tagMap.contains(var.cap(1))) {
after.replace(ii, var.cap(0).length(), tagMap[var.cap(1)]);
} else { // Couldn't find it
doneWithVar = true;
break;
}
}
}
if (doneWithVar || !after.contains("$$")) {
after = loadFile(after);
QFileInfo fi(callToInclude.cap(1));
after.replace("$$PWD", fi.path());
t.replace( i, callToInclude.matchedLength(), after );
}
i += after.length();
}
/*
Strip comments, merge lines ending with backslash, add
spaces around '=' and '+=', replace '\n' with ';', and
simplify white spaces.
*/
t.replace( QRegExp(QString("#[^\n]*\n")), QString(" ") );
t.replace( QRegExp(QString("\\\\[^\n\\S]*\n")), QString(" ") );
t.replace( "=", QString(" = ") );
t.replace( "+ =", QString(" += ") );
t.replace( "\n", QString(";") );
t.replace( "\r", QString("") ); // remove carriage return
t = t.simplified();
/*
Populate tagMap with 'key = value' entries.
*/
QStringList lines = t.split(';', QString::SkipEmptyParts);
QStringList::Iterator line;
for ( line = lines.begin(); line != lines.end(); ++line ) {
QStringList toks = (*line).split(' ', QString::SkipEmptyParts);
if ( toks.count() >= 3 &&
(toks[1] == QString("=") || toks[1] == QString("+=") ||
toks[1] == QString("*=")) ) {
QString tag = toks.first();
int k = tag.lastIndexOf( QChar(':') ); // as in 'unix:'
if ( k != -1 )
tag = tag.mid( k + 1 );
toks.erase( toks.begin() );
QString action = toks.first();
toks.erase( toks.begin() );
if ( tagMap.contains(tag) ) {
if ( action == QString("=") )
tagMap.insert( tag, toks.join(" ") );
else
tagMap[tag] += QChar( ' ' ) + toks.join( " " );
} else {
tagMap[tag] = toks.join( " " );
}
}
}
/*
Expand $$variables within the 'value' part of a 'key = value'
pair.
*/
QRegExp var( "\\$\\$[({]?([a-zA-Z0-9_]+)[)}]?" );
QMap<QString, QString>::Iterator it;
for ( it = tagMap.begin(); it != tagMap.end(); ++it ) {
int i = 0;
while ( (i = var.indexIn((*it), i)) != -1 ) {
int len = var.matchedLength();
QString invocation = var.cap(1);
QString after;
if ( invocation == "system" ) {
// skip system(); it will be handled in the next pass
++i;
} else {
if ( tagMap.contains(invocation) )
after = tagMap[invocation];
else if (invocation.toLower() == "pwd")
after = QDir::currentPath();
(*it).replace( i, len, after );
i += after.length();
}
}
}
/*
Execute system() calls.
*/
QRegExp callToSystem( "\\$\\$system\\s*\\(([^()]*)\\)" );
for ( it = tagMap.begin(); it != tagMap.end(); ++it ) {
int i = 0;
while ( (i = callToSystem.indexIn((*it), i)) != -1 ) {
/*
This code is stolen from qmake's project.cpp file.
Ideally we would use the same parser, so we wouldn't
have this code duplication.
*/
QString after;
char buff[256];
FILE *proc = QT_POPEN( callToSystem.cap(1).toLatin1().constData(), "r" );
while ( proc && !feof(proc) ) {
int read_in = int(fread( buff, 1, 255, proc ));
if ( !read_in )
break;
for ( int i = 0; i < read_in; i++ ) {
if ( buff[i] == '\n' || buff[i] == '\t' )
buff[i] = ' ';
}
buff[read_in] = '\0';
after += buff;
}
(*it).replace( i, callToSystem.matchedLength(), after );
i += after.length();
}
}
stillProcess = callToInclude.indexIn(t) != -1;
}
return tagMap;
}
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