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/****************************************************************************
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**
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** Copyright (C) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the Qt Script Generator project on Qt Labs.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** No Commercial Usage
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** This file contains pre-release code and may not be distributed.
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** You may use this file in accordance with the terms and conditions
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** contained in the Technology Preview License Agreement accompanying
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** this package.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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**
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**
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "fileout.h"
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#include "reporthandler.h"
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#include <QFileInfo>
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#include <QDir>
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bool FileOut::dummy = false;
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bool FileOut::diff = false;
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bool FileOut::license = false;
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#ifdef Q_OS_LINUX
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const char* colorDelete = "\033[31m";
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const char* colorAdd = "\033[32m";
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const char* colorInfo = "\033[36m";
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const char* colorReset = "\033[0m";
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#else
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const char* colorDelete = "";
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const char* colorAdd = "";
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const char* colorInfo = "";
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const char* colorReset = "";
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#endif
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FileOut::FileOut(QString n):
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name(n),
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stream(&tmp),
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isDone(false)
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{}
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static int* lcsLength(QList<QByteArray> a, QList<QByteArray> b) {
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const int height = a.size() + 1;
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const int width = b.size() + 1;
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int *res = new int[width * height];
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for (int row=0; row<height; row++) {
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res[width * row] = 0;
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}
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for (int col=0; col<width; col++) {
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res[col] = 0;
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}
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for (int row=1; row<height; row++) {
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for (int col=1; col<width; col++) {
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if (a[row-1] == b[col-1])
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res[width * row + col] = res[width * (row-1) + col-1] + 1;
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else
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res[width * row + col] = qMax(res[width * row + col-1],
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res[width * (row-1) + col]);
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}
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}
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return res;
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}
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enum Type {Add, Delete, Unchanged};
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struct Unit
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{
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Unit(Type type, int pos) :
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type(type),
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start(pos),
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end(pos)
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{}
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Type type;
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int start;
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int end;
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void print(QList<QByteArray> a, QList<QByteArray> b){
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{
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if (type == Unchanged) {
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if ((end - start) > 9) {
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for (int i = start; i <= start+2; i++)
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printf(" %s\n", a[i].data());
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printf("%s=\n= %d more lines\n=%s\n", colorInfo, end - start - 6, colorReset);
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for (int i = end-2; i <= end; i++)
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printf(" %s\n", a[i].data());
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}
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else
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for (int i = start; i <= end; i++)
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printf(" %s\n", a[i].data());
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}
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else if(type == Add) {
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printf("%s", colorAdd);
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for (int i = start; i <= end; i++){
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printf("+ %s\n", b[i].data());
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}
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printf("%s", colorReset);
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}
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else if (type == Delete) {
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printf("%s", colorDelete);
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for (int i = start; i <= end; i++) {
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printf("- %s\n", a[i].data());
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}
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printf("%s", colorReset);
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}
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}
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}
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};
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static QList<Unit*> *unitAppend(QList<Unit*> *res, Type type, int pos)
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{
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if (res == 0) {
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res = new QList<Unit*>;
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res->append(new Unit(type, pos));
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return res;
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}
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Unit *last = res->last();
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if (last->type == type) {
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last->end = pos;
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} else {
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res->append(new Unit(type, pos));
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}
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return res;
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}
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static QList<Unit*> *diffHelper(int *lcs, QList<QByteArray> a, QList<QByteArray> b, int row, int col) {
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if (row>0 && col>0 && (a[row-1] == b[col-1])) {
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return unitAppend(diffHelper(lcs, a, b, row-1, col-1), Unchanged, row-1);
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}
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else {
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int width = b.size()+1;
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if ((col > 0) && ((row==0) ||
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lcs[width * row + col-1] >= lcs[width * (row-1) + col]))
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{
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return unitAppend(diffHelper(lcs, a, b, row, col-1), Add, col-1);
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}
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else if((row > 0) && ((col==0) ||
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lcs[width * row + col-1] < lcs[width * (row-1) + col])){
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return unitAppend(diffHelper(lcs, a, b, row-1, col), Delete, row-1);;
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}
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}
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delete lcs;
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return 0;
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}
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static void diff(QList<QByteArray> a, QList<QByteArray> b) {
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QList<Unit*> *res = diffHelper(lcsLength(a, b), a, b, a.size(), b.size());
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for (int i=0; i < res->size(); i++) {
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Unit *unit = res->at(i);
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unit->print(a, b);
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delete(unit);
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}
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delete(res);
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}
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bool FileOut::done() {
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Q_ASSERT( !isDone );
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isDone = true;
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bool fileEqual = false;
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QFile fileRead(name);
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QFileInfo info(fileRead);
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stream.flush();
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QByteArray original;
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if (info.exists() && (diff || (info.size() == tmp.size()))) {
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if ( !fileRead.open(QIODevice::ReadOnly) ) {
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ReportHandler::warning(QString("failed to open file '%1' for reading")
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.arg(fileRead.fileName()));
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return false;
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}
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original = fileRead.readAll();
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fileRead.close();
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fileEqual = (original == tmp);
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}
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if( !fileEqual ) {
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if( !FileOut::dummy ) {
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QDir dir(info.absolutePath());
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if (!dir.mkpath(dir.absolutePath())) {
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ReportHandler::warning(QString("unable to create directory '%1'")
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.arg(dir.absolutePath()));
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return false;
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}
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QFile fileWrite(name);
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if (!fileWrite.open(QIODevice::WriteOnly)) {
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ReportHandler::warning(QString("failed to open file '%1' for writing")
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.arg(fileWrite.fileName()));
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return false;
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}
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stream.setDevice(&fileWrite);
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stream << tmp;
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}
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if (diff) {
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printf("%sFile: %s%s\n", colorInfo, qPrintable(name), colorReset);
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::diff(original.split('\n'), tmp.split('\n'));
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printf("\n");
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}
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return true;
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}
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return false;
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}
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