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Reading entire file before parsing

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This commit is contained in:
Rafael 2016-07-22 16:06:36 +02:00
parent 6fe55a3402
commit b4c5710724
2 changed files with 66 additions and 41 deletions
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95
SnapmaticPicture.cpp
View file

@ -24,6 +24,8 @@
#include <QVariantMap>
#include <QJsonArray>
#include <QString>
#include <QBuffer>
#include <QDebug>
#include <QImage>
#include <QFile>
@ -32,12 +34,19 @@ SnapmaticPicture::SnapmaticPicture(const QString &fileName, QObject *parent) : Q
// PARSE INT INIT - DO NOT CHANGE THIS VALUES
snapmaticHeaderLength = 278;
snapmaticUsefulLength = 260;
snapmaticFileMaxSize = 528192;
jpegHeaderLineDifStr = 2;
jpegPreHeaderLength = 14;
jpegPicStreamLength = 524288;
jsonStreamLength = 3076;
tideStreamLength = 260;
// PARSE EDITOR INIT
jpegStreamEditorBegin = 292;
jsonStreamEditorBegin = 524588;
jsonStreamEditorLength = 3072;
rawPicContent = "";
// INIT PIC
cachePicture = QImage(0, 0, QImage::Format_RGB32);
picExportFileName = "";
@ -60,12 +69,14 @@ SnapmaticPicture::SnapmaticPicture(const QString &fileName, QObject *parent) : Q
jsonPlyrsList = QStringList();
}
bool SnapmaticPicture::readingPicture()
bool SnapmaticPicture::readingPicture(bool writeEnabled)
{
// Start opening file
// lastStep is like currentStep
QFile *picFile = new QFile(picFileName);
QIODevice *picStream;
if (!picFile->open(QFile::ReadOnly))
{
lastStep = "1;/1,OpenFile," + StringParser::convertDrawStringForLog(picFileName);
@ -73,117 +84,123 @@ bool SnapmaticPicture::readingPicture()
delete picFile;
return false;
}
rawPicContent = picFile->read(snapmaticFileMaxSize);
picStream = new QBuffer(&rawPicContent);
picStream->open(QIODevice::ReadWrite);
// Reading Snapmatic Header
if (!picFile->isReadable())
if (!picStream->isReadable())
{
lastStep = "2;/3,ReadingFile," + StringParser::convertDrawStringForLog(picFileName) + ",1,NOHEADER";
picFile->close();
picFile->deleteLater();
picStream->close();
picStream->deleteLater();
delete picFile;
return false;
}
QByteArray snapmaticHeaderLine = picFile->read(snapmaticHeaderLength);
QByteArray snapmaticHeaderLine = picStream->read(snapmaticHeaderLength);
pictureStr = getSnapmaticPictureString(snapmaticHeaderLine);
// Reading JPEG Header Line
if (!picFile->isReadable())
if (!picStream->isReadable())
{
lastStep = "2;/3,ReadingFile," + StringParser::convertDrawStringForLog(picFileName) + ",2,NOHEADER";
picFile->close();
picFile->deleteLater();
picStream->close();
picStream->deleteLater();
delete picFile;
return false;
}
QByteArray jpegHeaderLine = picFile->read(jpegPreHeaderLength);
QByteArray jpegHeaderLine = picStream->read(jpegPreHeaderLength);
// Checking for JPEG
jpegHeaderLine.remove(0, jpegHeaderLineDifStr);
if (jpegHeaderLine.left(4) != "JPEG")
{
lastStep = "2;/3,ReadingFile," + StringParser::convertDrawStringForLog(picFileName) + ",2,NOJPEG";
picFile->close();
picFile->deleteLater();
picStream->close();
picStream->deleteLater();
delete picFile;
return false;
}
// Read JPEG Stream
if (!picFile->isReadable())
if (!picStream->isReadable())
{
lastStep = "2;/3,ReadingFile," + StringParser::convertDrawStringForLog(picFileName) + ",2,NOPIC";
picFile->close();
picFile->deleteLater();
picStream->close();
picStream->deleteLater();
delete picFile;
return false;
}
QByteArray jpegRawContent = picFile->read(jpegPicStreamLength);
QByteArray jpegRawContent = picStream->read(jpegPicStreamLength);
picOk = cachePicture.loadFromData(jpegRawContent, "JPEG");
// Read JSON Stream
if (!picFile->isReadable())
if (!picStream->isReadable())
{
lastStep = "2;/3,ReadingFile," + StringParser::convertDrawStringForLog(picFileName) + ",3,NOJSON";
picFile->close();
picFile->deleteLater();
picStream->close();
picStream->deleteLater();
delete picFile;
return picOk;
}
else if (picFile->read(4) != "JSON")
else if (picStream->read(4) != "JSON")
{
lastStep = "2;/3,ReadingFile," + StringParser::convertDrawStringForLog(picFileName) + ",3,CTJSON";
picFile->close();
picFile->deleteLater();
picStream->close();
picStream->deleteLater();
delete picFile;
return picOk;
}
QByteArray jsonRawContent = picFile->read(jsonStreamLength);
QByteArray jsonRawContent = picStream->read(jsonStreamLength);
jsonStr = getSnapmaticJSONString(jsonRawContent);
parseJsonContent(); // JSON parsing is own function
if (!picFile->isReadable())
if (!picStream->isReadable())
{
lastStep = "2;/3,ReadingFile," + StringParser::convertDrawStringForLog(picFileName) + ",4,NOTITL";
picFile->close();
picFile->deleteLater();
picStream->close();
picStream->deleteLater();
delete picFile;
return picOk;
}
else if (picFile->read(4) != "TITL")
else if (picStream->read(4) != "TITL")
{
lastStep = "2;/3,ReadingFile," + StringParser::convertDrawStringForLog(picFileName) + ",4,CTTITL";
picFile->close();
picFile->deleteLater();
picStream->close();
picStream->deleteLater();
delete picFile;
return picOk;
}
QByteArray titlRawContent = picFile->read(tideStreamLength);
QByteArray titlRawContent = picStream->read(tideStreamLength);
titlStr = getSnapmaticTIDEString(titlRawContent);
if (!picFile->isReadable())
if (!picStream->isReadable())
{
lastStep = "2;/3,ReadingFile," + StringParser::convertDrawStringForLog(picFileName) + ",5,NODESC";
picFile->close();
picFile->deleteLater();
picStream->close();
picStream->deleteLater();
delete picFile;
return picOk;
}
else if (picFile->read(4) != "DESC")
else if (picStream->read(4) != "DESC")
{
lastStep = "2;/3,ReadingFile," + StringParser::convertDrawStringForLog(picFileName) + ",5,CTDESC";
picFile->close();
picFile->deleteLater();
picStream->close();
picStream->deleteLater();
delete picFile;
return picOk;
}
QByteArray descRawContent = picFile->read(tideStreamLength);
QByteArray descRawContent = picStream->read(tideStreamLength);
descStr = getSnapmaticTIDEString(descRawContent);
parseSnapmaticExportAndSortString();
picFile->close();
picStream->close();
picStream->deleteLater();
picFile->deleteLater();
delete picStream;
delete picFile;
if (!writeEnabled) { rawPicContent.clear(); }
return picOk;
}
@ -251,12 +268,12 @@ void SnapmaticPicture::parseSnapmaticExportAndSortString()
}
}
bool SnapmaticPicture::readingPictureFromFile(const QString &fileName)
bool SnapmaticPicture::readingPictureFromFile(const QString &fileName, bool writeEnabled)
{
if (fileName != "")
{
picFileName = fileName;
return readingPicture();
return readingPicture(writeEnabled);
}
else
{

12
SnapmaticPicture.h
View file

@ -31,8 +31,8 @@ class SnapmaticPicture : public QObject
Q_OBJECT
public:
explicit SnapmaticPicture(const QString &fileName = "", QObject *parent = 0);
bool readingPictureFromFile(const QString &fileName);
bool readingPicture();
bool readingPictureFromFile(const QString &fileName, bool writeEnabled = false);
bool readingPicture(bool writeEnabled = false);
bool isPicOk();
QImage getPicture();
QString getLastStep();
@ -70,16 +70,24 @@ private:
QString titlStr;
QString descStr;
bool picOk;
bool editMode;
// PARSE INT
int snapmaticHeaderLength;
int snapmaticUsefulLength;
int snapmaticFileMaxSize;
int jpegHeaderLineDifStr;
int jpegPreHeaderLength;
int jpegPicStreamLength;
int jsonStreamLength;
int tideStreamLength;
// PARSE EDITOR
int jpegStreamEditorBegin;
int jsonStreamEditorBegin;
int jsonStreamEditorLength;
QByteArray rawPicContent;
// JSON
void parseJsonContent();
bool jsonOk;