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Diffstat (limited to 'generator/fileout.cpp')
| -rw-r--r-- | generator/fileout.cpp | 220 |
1 files changed, 220 insertions, 0 deletions
diff --git a/generator/fileout.cpp b/generator/fileout.cpp new file mode 100644 index 0000000..a9fce2e --- /dev/null +++ b/generator/fileout.cpp @@ -0,0 +1,220 @@ +/**************************************************************************** +** +** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved. +** +** This file is part of the Qt Script Generator project on Trolltech Labs. +** +** This file may be used under the terms of the GNU General Public +** License version 2.0 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 GNU +** General Public Licensing requirements will be met: +** http://www.trolltech.com/products/qt/opensource.html +** +** If you are unsure which license is appropriate for your use, please +** review the following information: +** http://www.trolltech.com/products/qt/licensing.html or contact the +** sales department at sales@trolltech.com. +** +** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE +** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +** +****************************************************************************/ + +#include "fileout.h" +#include "reporthandler.h" + +#include <QFileInfo> +#include <QDir> + +bool FileOut::dummy = false; +bool FileOut::diff = false; +bool FileOut::license = false; + +#ifdef Q_OS_LINUX +const char* colorDelete = "\033[31m"; +const char* colorAdd = "\033[32m"; +const char* colorInfo = "\033[36m"; +const char* colorReset = "\033[0m"; +#else +const char* colorDelete = ""; +const char* colorAdd = ""; +const char* colorInfo = ""; +const char* colorReset = ""; +#endif + +FileOut::FileOut(QString n): + name(n), + stream(&tmp), + isDone(false) +{} + +static int* lcsLength(QList<QByteArray> a, QList<QByteArray> b) { + const int height = a.size() + 1; + const int width = b.size() + 1; + + int *res = new int[width * height]; + + for (int row=0; row<height; row++) { + res[width * row] = 0; + } + for (int col=0; col<width; col++) { + res[col] = 0; + } + + for (int row=1; row<height; row++) { + for (int col=1; col<width; col++) { + + if (a[row-1] == b[col-1]) + res[width * row + col] = res[width * (row-1) + col-1] + 1; + else + res[width * row + col] = qMax(res[width * row + col-1], + res[width * (row-1) + col]); + } + } + return res; +} + +enum Type {Add, Delete, Unchanged}; + +struct Unit +{ + Unit(Type type, int pos) : + type(type), + start(pos), + end(pos) + {} + + Type type; + int start; + int end; + + void print(QList<QByteArray> a, QList<QByteArray> b){ + { + if (type == Unchanged) { + if ((end - start) > 9) { + for (int i = start; i <= start+2; i++) + printf(" %s\n", a[i].data()); + printf("%s=\n= %d more lines\n=%s\n", colorInfo, end - start - 6, colorReset); + for (int i = end-2; i <= end; i++) + printf(" %s\n", a[i].data()); + } + else + for (int i = start; i <= end; i++) + printf(" %s\n", a[i].data()); + } + else if(type == Add) { + printf("%s", colorAdd); + for (int i = start; i <= end; i++){ + printf("+ %s\n", b[i].data()); + } + printf("%s", colorReset); + } + else if (type == Delete) { + printf("%s", colorDelete); + for (int i = start; i <= end; i++) { + printf("- %s\n", a[i].data()); + } + printf("%s", colorReset); + } + } + } +}; + +static QList<Unit*> *unitAppend(QList<Unit*> *res, Type type, int pos) +{ + if (res == 0) { + res = new QList<Unit*>; + res->append(new Unit(type, pos)); + return res; + } + + Unit *last = res->last(); + if (last->type == type) { + last->end = pos; + } else { + res->append(new Unit(type, pos)); + } + return res; +} + +static QList<Unit*> *diffHelper(int *lcs, QList<QByteArray> a, QList<QByteArray> b, int row, int col) { + if (row>0 && col>0 && (a[row-1] == b[col-1])) { + return unitAppend(diffHelper(lcs, a, b, row-1, col-1), Unchanged, row-1); + } + else { + int width = b.size()+1; + if ((col > 0) && ((row==0) || + lcs[width * row + col-1] >= lcs[width * (row-1) + col])) + { + return unitAppend(diffHelper(lcs, a, b, row, col-1), Add, col-1); + } + else if((row > 0) && ((col==0) || + lcs[width * row + col-1] < lcs[width * (row-1) + col])){ + return unitAppend(diffHelper(lcs, a, b, row-1, col), Delete, row-1);; + } + } + delete lcs; + return 0; +} + +static void diff(QList<QByteArray> a, QList<QByteArray> b) { + QList<Unit*> *res = diffHelper(lcsLength(a, b), a, b, a.size(), b.size()); + for (int i=0; i < res->size(); i++) { + Unit *unit = res->at(i); + unit->print(a, b); + delete(unit); + } + delete(res); +} + + +bool FileOut::done() { + Q_ASSERT( !isDone ); + isDone = true; + bool fileEqual = false; + QFile fileRead(name); + QFileInfo info(fileRead); + stream.flush(); + QByteArray original; + if (info.exists() && (diff || (info.size() == tmp.size()))) { + if ( !fileRead.open(QIODevice::ReadOnly) ) { + ReportHandler::warning(QString("failed to open file '%1' for reading") + .arg(fileRead.fileName())); + return false; + } + + original = fileRead.readAll(); + fileRead.close(); + fileEqual = (original == tmp); + } + + if( !fileEqual ) { + if( !FileOut::dummy ) { + QDir dir(info.absolutePath()); + if (!dir.mkpath(dir.absolutePath())) { + ReportHandler::warning(QString("unable to create directory '%1'") + .arg(dir.absolutePath())); + return false; + } + + QFile fileWrite(name); + if (!fileWrite.open(QIODevice::WriteOnly)) { + ReportHandler::warning(QString("failed to open file '%1' for writing") + .arg(fileWrite.fileName())); + return false; + } + stream.setDevice(&fileWrite); + stream << tmp; + } + if (diff) { + printf("%sFile: %s%s\n", colorInfo, qPrintable(name), colorReset); + + ::diff(original.split('\n'), tmp.split('\n')); + + printf("\n"); + } + return true; + } + return false; +} |