70 lines
1.7 KiB
C++
70 lines
1.7 KiB
C++
#include "qwindriverbuffer.h"
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#ifdef Q_OS_WIN
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#include "document/qstoragedevice.h"
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/*
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* this file is implemented by wingsummer,
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* 使用 QHexEdit2 的代码来实现轻松访问上 GB 的文件，
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* 该类作者并未实现
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*/
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QWinDriverBuffer::QWinDriverBuffer(QObject *parent) : QHexBuffer(parent) {
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_chunks = new Chunks_win(parent);
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}
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QWinDriverBuffer::~QWinDriverBuffer() {}
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uchar QWinDriverBuffer::at(qsizetype idx) {
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return uchar(_chunks->data(idx, 1)[0]);
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}
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qsizetype QWinDriverBuffer::length() const { return _chunks->size(); }
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void QWinDriverBuffer::insert(qsizetype offset, const QByteArray &data) {
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for (int i = 0; i < data.length(); i++) {
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_chunks->insert(offset + i, data.at(i));
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}
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}
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void QWinDriverBuffer::remove(qsizetype offset, qsizetype length) {
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for (uint i = 0; i < uint(length); i++) {
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_chunks->removeAt(offset + i);
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}
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}
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QByteArray QWinDriverBuffer::read(qsizetype offset, qsizetype length) {
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return _chunks->data(offset, length);
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}
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bool QWinDriverBuffer::read(QIODevice *device) {
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if (device == nullptr) {
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return false;
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}
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auto driver = qobject_cast<QStorageDevice *>(device);
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if (driver == nullptr) {
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delete device;
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return false;
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}
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auto storage = driver->storage(); // only use name
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delete device;
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_chunks->setIODevice(storage);
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return true;
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}
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void QWinDriverBuffer::write(QIODevice *device) { _chunks->write(device); }
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qsizetype QWinDriverBuffer::indexOf(const QByteArray &ba, qsizetype from) {
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return _chunks->indexOf(ba, from);
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}
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qsizetype QWinDriverBuffer::lastIndexOf(const QByteArray &ba, qsizetype from) {
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return _chunks->lastIndexOf(ba, from);
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}
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#endif
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