Added filesystem module, tests and implementation for it in emulator.

emulator/emulated/test.txt

@@ -0,0 +1 @@
+Hallo Test 1241

emulator/emulated/test2.txt

@@ -0,0 +1 @@
+hallo welt

emulator/qt/emulatorqt.pro

@@ -15,14 +15,16 @@ SOURCES += \
     main.cpp \
     ll_tft.cpp \
     ll_system.cpp \
-    ll_touch.cpp
+    ll_touch.cpp \
+    ll_filesystem.cpp
 HEADERS += \
     mainwindow.h \
 
 
 INCLUDEPATH+= ../../common/lowlevel/ \
               ../../common/touch/ \
-              ../../common/tft/
+              ../../common/tft/ \
+              ../../common/filesystem
 
 
 FORMS += \

emulator/qt/ll_filesystem.cpp

@@ -0,0 +1,181 @@
+extern "C" {
+    #include "ll_filesystem.h"
+}
+#include <QFile>
+#include <QDir>
+#include <QDebug>
+#include <QFileInfoList>
+#include <QDateTime>
+
+QDir rootdir ("./emulated");
+
+bool ll_filesystem_init() {
+    if(!rootdir.exists()) {
+        qWarning() << "Filesystem can not be emulated because the 'emulated' folder does not exist";
+        return false;
+    }
+    return true;
+}
+
+DIRECTORY_STRUCT* ll_filesystem_dir_open(const char* path) {
+    QDir d(rootdir);
+    d.cd(path);
+    if(!d.exists()) {
+        return NULL;
+    }
+
+    DIRECTORY_STRUCT* directory = new DIRECTORY_STRUCT();
+    QFileInfoList entries = d.entryInfoList(QDir::NoDotAndDotDot|QDir::Files|QDir::Dirs|QDir::Readable|QDir::Writable|QDir::Hidden|QDir::System);
+    directory->path = path;
+    directory->num_files = entries.count();
+    directory->files =  new FILE_STRUCT[directory->num_files];
+
+
+    for(int i=0; i<entries.count(); i++){
+        QFileInfo fi = entries.at(i);
+        FILE_STRUCT* entry = &(directory->files[i]);
+        entry->fattrib = 0;
+        entry->fname = new char[fi.fileName().length()+1];
+        strcpy(entry->fname,fi.fileName().toStdString().c_str());
+        if(fi.isDir()) {
+            entry->fattrib|=F_DIR;
+            entry->fsize = 0;
+        } else {
+            entry->fsize = fi.size();
+        }
+        if(fi.isHidden()) {
+            entry->fattrib|=F_HID;
+        }
+        if(!fi.isWritable()) {
+            entry->fattrib|=F_RDO;
+        }
+
+        QDateTime dt = fi.lastModified();
+        entry->fdate.year = dt.date().year()-1980;
+        entry->fdate.month = dt.date().month();
+        entry->fdate.day = dt.date().day();
+        entry->ftime.hour = dt.time().hour();
+        entry->ftime.min = dt.time().minute();
+        entry->ftime.sec = dt.time().second()/2;
+
+    }
+
+    return directory;
+}
+
+void ll_filesystem_dir_close(DIRECTORY_STRUCT* dir) {
+    if(dir!=NULL) {
+        for(int i=0; i<dir->num_files; i++) {
+            delete dir->files[i].fname;
+        }
+        delete[] dir->files;
+        delete dir;
+    }
+}
+
+
+struct QT_FILE_HANDLE : FILE_HANDLE {
+    QFile* file;
+};
+
+
+FILE_HANDLE* ll_filesystem_file_open(const char* filename) {
+    if(!rootdir.exists()) {
+        return NULL;
+    }
+    QString filepath = rootdir.absoluteFilePath(filename);
+    QFile* f = new QFile(filepath);
+    if(!f->exists()) {
+        return NULL;
+    }
+
+    if(!f->open(QFile::ReadWrite)) {
+        return NULL;
+    }
+
+    QT_FILE_HANDLE* fh = new QT_FILE_HANDLE();
+    fh->file = f;
+    fh->fname = filename;
+    fh->fpos =0;
+    fh->fsize = f->size();
+    return fh;
+}
+
+void ll_filesystem_file_close(FILE_HANDLE* handle) {
+    if(handle!=NULL) {
+        QT_FILE_HANDLE* fh = static_cast<QT_FILE_HANDLE*>(handle);
+        if(fh->file->isOpen()) {
+            fh->file->close();
+        }
+        delete fh;
+    }
+}
+
+FILE_STATUS ll_filesystem_file_seek(FILE_HANDLE* handle, uint32_t offset) {
+    if(handle==NULL) {
+        return F_INVALIDPARAM;
+    }
+    QT_FILE_HANDLE* fh = static_cast<QT_FILE_HANDLE*>(handle);
+    if(!fh->file->isOpen()) {
+        return F_DISKERROR;
+    }
+    if(offset>=fh->file->size()) {
+        return F_INVALIDPARAM;
+    }
+
+    if(fh->file->seek(offset)) {
+        fh->fpos = offset;
+        return F_OK;
+    } else {
+        return F_DISKERROR;
+    }
+}
+
+FILE_STATUS ll_filesystem_file_read(FILE_HANDLE* handle, uint8_t* buf, uint32_t size) {
+    if(handle==NULL || buf==NULL) {
+        return F_INVALIDPARAM;
+    }
+    QT_FILE_HANDLE* fh = static_cast<QT_FILE_HANDLE*>(handle);
+    if(!fh->file->isOpen()) {
+        return F_DISKERROR;
+    }
+    if(!fh->file->isReadable()) {
+        return F_EACCESS;
+    }
+    qint64 bytesRead = fh->file->read((char*)buf,size);
+    if(bytesRead<0) {
+        return F_DISKERROR;
+    }
+    fh->fpos+=bytesRead;
+    if(bytesRead!=size) {
+        return F_EOF;
+    } else {
+        return F_OK;
+    }
+}
+
+FILE_STATUS ll_filesystem_file_write(FILE_HANDLE* handle, uint8_t* buf, uint32_t size) {
+    if(handle==NULL) {
+        return F_INVALIDPARAM;
+    }
+    QT_FILE_HANDLE* fh = static_cast<QT_FILE_HANDLE*>(handle);
+    if(!fh->file->isOpen()) {
+        return F_DISKERROR;
+    }
+    if(!fh->file->isWritable()) {
+        return F_EACCESS;
+    }
+    qint64 bytesWritten = fh->file->write((char*)buf,size);
+    if(bytesWritten<0) {
+        return F_DISKERROR;
+    }
+    fh->fpos+=bytesWritten;
+    if(bytesWritten!=size) {
+        return F_EOF;
+    } else {
+        return F_OK;
+    }
+}
+                                                                                                                                                                               
+
+