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pimpl for PackStream

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This commit is contained in:
Michaël Lemaire 2015-12-15 23:07:19 +01:00
parent 86e6539af9
commit aecd3dcdf3
2 changed files with 71 additions and 67 deletions
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124
src/system/PackStream.cpp
View file

@ -4,54 +4,62 @@
#include <QFile>
#include <QDataStream>
#include <QString>
#include <QByteArray>
PackStream::PackStream() {
file = NULL;
buffer = new QByteArray();
stream = new QDataStream(buffer, QIODevice::WriteOnly);
stream->setVersion(QDataStream::Qt_5_2);
class PackStream::pimpl {
public:
QFile *file;
QByteArray *buffer;
QDataStream *stream;
};
PackStream::PackStream() : pv(new pimpl) {
pv->file = NULL;
pv->buffer = new QByteArray();
pv->stream = new QDataStream(pv->buffer, QIODevice::WriteOnly);
pv->stream->setVersion(QDataStream::Qt_5_4);
}
PackStream::PackStream(const PackStream *other) : pv(new pimpl) {
pv->file = NULL;
pv->buffer = new QByteArray();
if (other->pv->file) {
Logs::error("System") << "Try to read from a substream bound to a file: "
<< other->pv->file->fileName().toStdString() << endl;
pv->stream = new QDataStream(pv->buffer, QIODevice::ReadOnly);
} else {
pv->stream = new QDataStream(other->pv->buffer, QIODevice::ReadOnly);
}
pv->stream->setVersion(QDataStream::Qt_5_4);
}
PackStream::PackStream(const string &buffer_content) : pv(new pimpl) {
pv->file = NULL;
pv->buffer = new QByteArray(buffer_content.c_str(), buffer_content.size());
pv->stream = new QDataStream(pv->buffer, QIODevice::ReadOnly);
pv->stream->setVersion(QDataStream::Qt_5_4);
}
PackStream::~PackStream() {
delete buffer;
delete stream;
if (file) {
delete file;
delete pv->buffer;
delete pv->stream;
if (pv->file) {
delete pv->file;
}
}
PackStream::PackStream(const PackStream *other) {
file = NULL;
buffer = new QByteArray();
if (other->file) {
Logs::error("System") << "Try to read from a substream bound to a file: "
<< other->file->fileName().toStdString() << endl;
stream = new QDataStream(buffer, QIODevice::ReadOnly);
} else {
stream = new QDataStream(other->buffer, QIODevice::ReadOnly);
}
stream->setVersion(QDataStream::Qt_5_2);
}
PackStream::PackStream(const string &buffer_content) {
file = NULL;
buffer = new QByteArray(buffer_content.c_str(), buffer_content.size());
stream = new QDataStream(buffer, QIODevice::ReadOnly);
stream->setVersion(QDataStream::Qt_5_2);
}
bool PackStream::bindToFile(const string &filepath, bool write) {
if (not file) {
file = new QFile(QString::fromStdString(filepath));
if (not file->open(write ? QIODevice::WriteOnly : QIODevice::ReadOnly)) {
if (not pv->file) {
pv->file = new QFile(QString::fromStdString(filepath));
if (not pv->file->open(write ? QIODevice::WriteOnly : QIODevice::ReadOnly)) {
return false;
}
QDataStream *new_stream = new QDataStream(file);
QDataStream *new_stream = new QDataStream(pv->file);
if (new_stream) {
delete stream;
stream = new_stream;
stream->setVersion(QDataStream::Qt_5_2);
delete pv->stream;
pv->stream = new_stream;
pv->stream->setVersion(QDataStream::Qt_5_4);
return true;
} else {
return false;
@ -63,79 +71,79 @@ bool PackStream::bindToFile(const string &filepath, bool write) {
void PackStream::write(const int *value) {
if (value) {
*stream << *value;
*pv->stream << *value;
}
}
void PackStream::write(const double *value) {
if (value) {
*stream << *value;
*pv->stream << *value;
}
}
void PackStream::write(const char *value, int max_length) {
if (value) {
int length = qstrlen(value);
*stream << QString::fromUtf8(value, length > max_length ? max_length : length);
*pv->stream << QString::fromUtf8(value, length > max_length ? max_length : length);
}
}
void PackStream::write(const string &value) {
*stream << QString::fromStdString(value);
*pv->stream << QString::fromStdString(value);
}
void PackStream::writeFromBuffer(const PackStream &other, bool prepend_size) {
if (other.file) {
if (other.pv->file) {
Logs::error("System") << "Try to write from a substream bound to a file: "
<< other.file->fileName().toStdString() << endl;
<< other.pv->file->fileName().toStdString() << endl;
} else {
if (prepend_size) {
int buffer_size = (int)other.buffer->size();
int buffer_size = (int)other.pv->buffer->size();
write(&buffer_size);
}
stream->writeRawData(other.buffer->data(), other.buffer->size());
pv->stream->writeRawData(other.pv->buffer->data(), other.pv->buffer->size());
}
}
string PackStream::getBuffer() {
if (file) {
Logs::error("System") << "Try to get buffer on a stream bound to a file: " << file->fileName().toStdString()
if (pv->file) {
Logs::error("System") << "Try to get buffer on a stream bound to a file: " << pv->file->fileName().toStdString()
<< endl;
return "";
} else {
return buffer->toStdString();
return pv->buffer->toStdString();
}
}
void PackStream::read(int *value) {
if (value and not stream->atEnd()) {
if (value and not pv->stream->atEnd()) {
int output;
*stream >> output;
*pv->stream >> output;
*value = output;
}
}
void PackStream::read(double *value) {
if (value and not stream->atEnd()) {
if (value and not pv->stream->atEnd()) {
double output;
*stream >> output;
*pv->stream >> output;
*value = output;
}
}
void PackStream::read(char *value, int max_length) {
if (value and not stream->atEnd()) {
if (value and not pv->stream->atEnd()) {
QString output;
*stream >> output;
*pv->stream >> output;
QByteArray array = output.toUtf8();
qstrncpy(value, array.constData(), max_length);
}
}
string PackStream::readString() {
if (not stream->atEnd()) {
if (not pv->stream->atEnd()) {
QString output;
*stream >> output;
*pv->stream >> output;
return output.toStdString();
} else {
return "";
@ -143,13 +151,13 @@ string PackStream::readString() {
}
void PackStream::skip(const int &value, int count) {
stream->skipRawData(sizeof(value) * count);
pv->stream->skipRawData(sizeof(value) * count);
}
void PackStream::skip(const double &value, int count) {
stream->skipRawData(sizeof(value) * count);
pv->stream->skipRawData(sizeof(value) * count);
}
void PackStream::skipBytes(int bytes) {
stream->skipRawData(bytes);
pv->stream->skipRawData(bytes);
}

14
src/system/PackStream.h
View file

@ -3,9 +3,7 @@
#include "system_global.h"
class QFile;
class QDataStream;
class QByteArray;
#include <memory>
namespace paysages {
namespace system {
@ -16,20 +14,19 @@ namespace system {
class SYSTEMSHARED_EXPORT PackStream {
public:
PackStream();
~PackStream();
/**
* Open a reading stream for another stream.
*
* The other stream must not have been bound to a file (still a memory buffer).
*/
PackStream(const PackStream *other);
/**
* Open a reading stream on a buffer content.
*/
PackStream(const string &buffer_content);
~PackStream();
bool bindToFile(const string &filepath, bool write = false);
void write(const int *value);
@ -61,9 +58,8 @@ class SYSTEMSHARED_EXPORT PackStream {
void skipBytes(int bytes);
private:
QFile *file;
QByteArray *buffer;
QDataStream *stream;
class pimpl;
unique_ptr<pimpl> pv;
};
}
}