diff options
Diffstat (limited to 'sources/shiboken6/ApiExtractor/fileout.cpp')
| -rw-r--r-- | sources/shiboken6/ApiExtractor/fileout.cpp | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/sources/shiboken6/ApiExtractor/fileout.cpp b/sources/shiboken6/ApiExtractor/fileout.cpp new file mode 100644 index 000000000..6f9ec4d8a --- /dev/null +++ b/sources/shiboken6/ApiExtractor/fileout.cpp @@ -0,0 +1,198 @@ +// Copyright (C) 2016 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0 + +#include "fileout.h" +#include "messages.h" +#include "reporthandler.h" +#include "exception.h" + +#include <QtCore/QFileInfo> +#include <QtCore/QDir> +#include <QtCore/QDebug> + +#include <cstdio> + +bool FileOut::m_dryRun = false; +bool FileOut::m_diff = false; + +#ifdef Q_OS_LINUX +static const char colorDelete[] = "\033[31m"; +static const char colorAdd[] = "\033[32m"; +static const char colorInfo[] = "\033[36m"; +static const char colorReset[] = "\033[0m"; +#else +static const char colorDelete[] = ""; +static const char colorAdd[] = ""; +static const char colorInfo[] = ""; +static const char colorReset[] = ""; +#endif + +FileOut::FileOut(QString n) : + stream(&m_buffer), + m_name(std::move(n)), + m_isDone(false) +{ +} + +FileOut::~FileOut() +{ + if (!m_isDone) { + qCWarning(lcShiboken).noquote().nospace() << __FUNCTION__ + << " file " << m_name << " not written."; + } +} + +static QList<qsizetype> lcsLength(const QByteArrayList &a, const QByteArrayList &b) +{ + const auto height = a.size() + 1; + const auto width = b.size() + 1; + + QList<qsizetype> res(width * height, 0); + + for (qsizetype row = 1; row < height; row++) { + for (qsizetype col = 1; col < width; col++) { + if (a.at(row - 1) == b.at(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 +{ + Type type; + qsizetype start; + qsizetype end; + + void print(const QByteArrayList &a, const QByteArrayList &b) const; +}; + +void Unit::print(const QByteArrayList &a, const QByteArrayList &b) const +{ + switch (type) { + case Unchanged: + if ((end - start) > 9) { + for (auto i = start; i <= start + 2; ++i) + std::printf(" %s\n", a.at(i).constData()); + std::printf("%s=\n= %d more lines\n=%s\n", + colorInfo, int(end - start - 6), colorReset); + for (auto i = end - 2; i <= end; ++i) + std::printf(" %s\n", a.at(i).constData()); + } else { + for (auto i = start; i <= end; ++i) + std::printf(" %s\n", a.at(i).constData()); + } + break; + case Add: + std::fputs(colorAdd, stdout); + for (auto i = start; i <= end; ++i) + std::printf("+ %s\n", b.at(i).constData()); + std::fputs(colorReset, stdout); + break; + case Delete: + std::fputs(colorDelete, stdout); + for (auto i = start; i <= end; ++i) + std::printf("- %s\n", a.at(i).constData()); + std::fputs(colorReset, stdout); + break; + } +} + +static void unitAppend(Type type, qsizetype pos, QList<Unit> *units) +{ + if (!units->isEmpty() && units->last().type == type) + units->last().end = pos; + else + units->append(Unit{type, pos, pos}); +} + +static QList<Unit> diffHelper(const QList<qsizetype> &lcs, + const QByteArrayList &a, const QByteArrayList &b, + qsizetype row, qsizetype col) +{ + if (row > 0 && col > 0 && a.at(row - 1) == b.at(col - 1)) { + QList<Unit> result = diffHelper(lcs, a, b, row - 1, col - 1); + unitAppend(Unchanged, row - 1, &result); + return result; + } + + const auto width = b.size() + 1; + if (col > 0 + && (row == 0 || lcs.at(width * row + col -1 ) >= lcs.at(width * (row - 1) + col))) { + QList<Unit> result = diffHelper(lcs, a, b, row, col - 1); + unitAppend(Add, col - 1, &result); + return result; + } + if (row > 0 + && (col == 0 || lcs.at(width * row + col-1) < lcs.at(width * (row - 1) + col))) { + QList<Unit> result = diffHelper(lcs, a, b, row - 1, col); + unitAppend(Delete, row - 1, &result); + return result; + } + return {}; +} + +static void diff(const QByteArrayList &a, const QByteArrayList &b) +{ + const QList<Unit> res = diffHelper(lcsLength(a, b), a, b, a.size(), b.size()); + for (const Unit &unit : res) + unit.print(a, b); +} + +FileOut::State FileOut::done() +{ + if (m_isDone) + return Success; + + bool fileEqual = false; + QFile fileRead(m_name); + QFileInfo info(fileRead); + stream.flush(); + QByteArray original; + if (info.exists() && (m_diff || (info.size() == m_buffer.size()))) { + if (!fileRead.open(QIODevice::ReadOnly)) + throw Exception(msgCannotOpenForReading(fileRead)); + + original = fileRead.readAll(); + fileRead.close(); + fileEqual = (original == m_buffer); + } + + if (fileEqual) { + m_isDone = true; + return Unchanged; + } + + if (!FileOut::m_dryRun) { + QDir dir(info.absolutePath()); + if (!dir.mkpath(dir.absolutePath())) { + const QString message = QString::fromLatin1("Unable to create directory '%1'") + .arg(QDir::toNativeSeparators(dir.absolutePath())); + throw Exception(message); + } + + QFile fileWrite(m_name); + if (!fileWrite.open(QIODevice::WriteOnly)) + throw Exception(msgCannotOpenForWriting(fileWrite)); + if (fileWrite.write(m_buffer) == -1 || !fileWrite.flush()) + throw Exception(msgWriteFailed(fileWrite, m_buffer.size())); + } + if (m_diff) { + std::printf("%sFile: %s%s\n", colorInfo, qPrintable(m_name), colorReset); + ::diff(original.split('\n'), m_buffer.split('\n')); + std::printf("\n"); + } + + m_isDone = true; + + return Success; +} |