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/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** Commercial Usage
**
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
**
** 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.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at http://www.qtsoftware.com/contact.
**
**************************************************************************/
#include "indenter.h"
#include <QtCore/QFile>
#include <QtCore/QStringList>
#include <QtCore/QDebug>
#include <QtCore/QTextStream>
#include <QtCore/QFileInfo>
#include <stdio.h>
typedef SharedTools::Indenter<QStringList::const_iterator> Indenter;
static QString fileContents(const QString &fileName)
{
QFile f(fileName);
if (!f.open(QIODevice::ReadOnly)) {
const QString msg = QString(QLatin1String("error: Cannot open file '%1' for reading: %2")).
arg(fileName).arg(f.errorString());
qWarning(msg.toLatin1().constData());
return QString::null;
}
const QString contents = QString::fromUtf8(f.readAll());
f.close();
if ( contents.isEmpty() ) {
const QString msg = QString(QLatin1String("error: File '%1' is empty")).arg(fileName);
qWarning(msg.toLatin1().constData());
return QString::null;
}
return contents;
}
static void printUsage(char *a0)
{
const QFileInfo fi(QString::fromUtf8(a0));
const QString usage = QString(QLatin1String("Usage: %1 [-i indent-size] [-t tab-size] file.cpp")).
arg(fi.fileName());
qWarning(usage.toUtf8().constData());
}
static int integerOptionArgument(char ** &aptr, char **end)
{
if (++aptr == end)
return -1;
const QString arg = QString::fromUtf8(*aptr);
bool ok;
const int rc = arg.toInt (&ok);
if (!ok)
return -1;
return rc;
}
static QStringList parseCommandLine(char **begin, char **end)
{
char **aptr = begin;
if (++aptr == end)
return QStringList();
QStringList fileNames;
for ( ; aptr != end; ++aptr) {
const char *arg = *aptr;
if (arg[0] == '-') {
switch (arg[1]) {
case 't': {
const int tabSize = integerOptionArgument(aptr, end);
if ( tabSize == -1)
return QStringList();
Indenter::instance().setTabSize(tabSize);
}
break;
case 'i': {
const int indentSize = integerOptionArgument(aptr, end);
if (indentSize == -1)
return QStringList();
Indenter::instance().setIndentSize(indentSize);
}
break;
default:
return QStringList();
}
} else {
fileNames.push_back(QString::fromUtf8(arg));
}
}
return fileNames;
}
int format(const QString &fileName)
{
const QString code = fileContents(fileName);
if (code == QString::null)
return 1;
QStringList program = code.split(QLatin1Char('\n'), QString::KeepEmptyParts);
while (!program.isEmpty()) {
if (!program.back().trimmed().isEmpty())
break;
program.pop_back();
}
QStringList p;
QString out;
const QChar colon = QLatin1Char(':');
const QChar blank = QLatin1Char(' ');
const QChar newLine = QLatin1Char('\n');
QStringList::const_iterator cend = program.constEnd();
for (QStringList::const_iterator it = program.constBegin(); it != cend; ++it) {
p.push_back(*it);
QString &line = p.back();
QChar typedIn = Indenter::instance().firstNonWhiteSpace(line);
if (p.last().endsWith(colon))
typedIn = colon;
const int indent = Indenter::instance().indentForBottomLine(p.constBegin(), p.constEnd(), typedIn);
const QString trimmed = line.trimmed();
// Indent the line in the list so that the formatter code sees the indented line.
if (!trimmed.isEmpty()) {
line = QString(indent, blank);
line += trimmed;
}
out += line;
out += newLine ;
}
while (out.endsWith(newLine))
out.truncate(out.length() - 1 );
fputs(out.toUtf8().constData(), stdout);
return 0;
}
int main(int argc, char **argv)
{
const QStringList fileNames = parseCommandLine(argv, argv + argc);
if (fileNames.empty()) {
printUsage(argv[0]);
return 1;
}
foreach (const QString &fileName, fileNames)
if (const int rc = format(fileName))
return rc;
return 0;
}
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