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Added user defined group 5A. Data for group is read from files.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,99 @@ | ||
| #include "fileloader.h" | ||
| #include <QDebug> | ||
| #include <QTimer> | ||
|
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| FileLoader::FileLoader(QObject *parent) : QObject(parent) | ||
| { | ||
| filewatcher = new QFileSystemWatcher(this); | ||
| connect(filewatcher, SIGNAL(fileChanged(const QString &)), this, SLOT(fileChanged(const QString &))); | ||
| ashextext=false; | ||
| loaderror=true; | ||
| } | ||
|
|
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| void FileLoader::fileLoadErrorTimeout() | ||
| { | ||
| if(!hasloaderror())return; | ||
| qDebug()<<"fileLoadErrorTimeout"; | ||
| if(!reloadfile())QTimer::singleShot(5000, this, SLOT(fileLoadErrorTimeout())); | ||
| else if((filewatcher->files().isEmpty())&&(!filename.isEmpty())) | ||
| { | ||
| qDebug()<<"fileCreated:"<<filename; | ||
| filewatcher->addPath(filename); | ||
| } | ||
| } | ||
|
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| void FileLoader::set_filename(QString filename, bool ashextext) | ||
| { | ||
| //if we are already watching the file then just leave the watcher alone | ||
| if(filewatcher->files().contains(filename)) | ||
| { | ||
| //if we failed to load the file then try again later | ||
| if(!load_file(filename,ashextext))QTimer::singleShot(5000, this, SLOT(fileLoadErrorTimeout())); | ||
| return; | ||
| } | ||
| //remove the all files from the watcher, set the filename, load the file, add the file to the watcher | ||
| if(!filewatcher->files().isEmpty())filewatcher->removePaths(filewatcher->files()); | ||
| //if we failed to load the file then try again later | ||
| if(!load_file(filename,ashextext))QTimer::singleShot(5000, this, SLOT(fileLoadErrorTimeout())); | ||
| if(!filename.isEmpty())filewatcher->addPath(get_filename()); | ||
| } | ||
|
|
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| void FileLoader::fileChanged(const QString &path) | ||
| { | ||
| if(!QFile(filename).exists())//if removed | ||
| { | ||
| qDebug()<<"fileRemoved:"<<path; | ||
| } else qDebug()<<"fileChanged:"<<path; | ||
| if(!reloadfile())QTimer::singleShot(5000, this, SLOT(fileLoadErrorTimeout())); | ||
| } | ||
|
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| bool FileLoader::load_file(QString _filename,bool _ashextext,bool invalidate) | ||
| { | ||
| loaderror=true; | ||
| if(_filename.isEmpty())invalidate=true;//invalidate if empty | ||
| if(invalidate) | ||
| { | ||
| filename.clear(); | ||
| ashextext=!ashextext; | ||
| } | ||
| if((filename==_filename)&&(ashextext==_ashextext)) | ||
| { | ||
| loaderror=false; | ||
| emit dataLoadSignal(ba); | ||
| return true; | ||
| } | ||
| filename=_filename; | ||
| ashextext=_ashextext; | ||
| ba.clear(); | ||
| if(filename.isEmpty())//lets say nothing is ok | ||
| { | ||
| loaderror=false; | ||
| emit dataLoadSignal(ba); | ||
| return true; | ||
| } | ||
| QFile file(filename); | ||
| if(ashextext) | ||
| { | ||
| if(!file.open(QIODevice::ReadOnly | QIODevice::Text)) | ||
| { | ||
| qDebug()<<"failed opening file for reading"; | ||
| emit dataLoadSignal(ba); | ||
| return false; | ||
| } | ||
| ba=QByteArray::fromHex(file.readAll()); | ||
| } | ||
| else | ||
| { | ||
| if(!file.open(QIODevice::ReadOnly)) | ||
| { | ||
| qDebug()<<"failed opening file for reading"; | ||
| emit dataLoadSignal(ba); | ||
| return false; | ||
| } | ||
| ba=file.readAll(); | ||
| } | ||
| loaderror=false; | ||
| emit dataLoadSignal(ba); | ||
| return true; | ||
| } | ||
|
|
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,48 @@ | ||
| #ifndef FILELOADER_H | ||
| #define FILELOADER_H | ||
| #include <QObject> | ||
| #include <QFileSystemWatcher> | ||
| #include <QFile> | ||
|
|
||
| class FileLoader : public QObject | ||
| { | ||
| Q_OBJECT | ||
| public: | ||
| explicit FileLoader(QObject *parent = 0); | ||
|
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| //just set the file name and this class will take care of the rest | ||
| void set_filename(QString filename, bool ashextext); | ||
|
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| //if you want to force a reload but i cant see why you would want to | ||
| bool reloadfile(){return load_file(filename,ashextext,true);} | ||
|
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| //was there an error the last time the file was loaded? | ||
| bool hasloaderror(){return loaderror;} | ||
|
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| //what is the file that is being monitored? | ||
| QString get_filename(){return filename;} | ||
|
|
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| //is it in hex text? | ||
| bool get_ashextext(){return ashextext;} | ||
|
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| signals: | ||
|
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| //emits when there is new data or the file has been reloaded | ||
| void dataLoadSignal(const QByteArray &data); | ||
|
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| private: | ||
| bool ashextext;// | ||
| bool loaderror;// | ||
| QString filename;// | ||
| QByteArray ba;// | ||
| QFileSystemWatcher *filewatcher; | ||
|
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| bool load_file(QString _filename,bool _ashextext){return load_file(_filename,_ashextext,false);} | ||
| bool load_file(QString _filename,bool _ashextext,bool invalidate); | ||
|
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| private slots: | ||
| void fileChanged(const QString &path); | ||
| void fileLoadErrorTimeout(); | ||
| }; | ||
|
|
||
| #endif // FILELOADER_H |
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