Move project, add simple test

Software/PC_Application/LibreVNA-GUI/csv.cpp

@@ -0,0 +1,120 @@
+#include "csv.h"
+
+#include <exception>
+#include <fstream>
+#include <QStringList>
+#include <iomanip>
+
+using namespace std;
+
+CSV::CSV()
+{
+
+}
+
+CSV CSV::fromFile(QString filename, char sep)
+{
+    CSV csv;
+    ifstream file;
+    file.open(filename.toStdString());
+    if(!file.is_open()) {
+        throw runtime_error("Unable to open file:"+filename.toStdString());
+    }
+    string line;
+    bool firstLine = true;
+    while(getline(file, line)) {
+        auto qline = QString::fromStdString(line);
+        auto stringList = qline.split(sep);
+        if(firstLine) {
+            // create columns and set headers
+            for(auto l : stringList) {
+                if(l.isEmpty()) {
+                    // header needs to be present, abort here
+                    break;
+                }
+                Column c;
+                c.header = l;
+                csv._columns.push_back(c);
+            }
+            firstLine = false;
+        } else {
+            // not the header, attempt to parse data
+            for(unsigned int i=0;i < csv._columns.size();i++) {
+                double value = 0.0;
+                if(i < (unsigned int) stringList.size()) {
+                    value = stringList[i].toDouble();
+                }
+                csv._columns[i].data.push_back(value);
+            }
+        }
+    }
+    csv.filename = filename;
+    return csv;
+}
+
+void CSV::toFile(QString filename, char sep)
+{
+    ofstream file;
+    if(!filename.endsWith(".csv")) {
+        filename.append(".csv");
+    }
+    file.open(filename.toStdString());
+    file << setprecision(10);
+    unsigned maxlen = 0;
+    for(auto c : _columns) {
+        file << c.header.toStdString();
+        file << sep;
+        if(c.data.size() > maxlen) {
+            maxlen = c.data.size();
+        }
+    }
+    file << endl;
+    for(unsigned int i=0;i<maxlen;i++) {
+        for(auto c : _columns) {
+            if(i < c.data.size()) {
+                file << c.data[i] << sep;
+            }
+        }
+        file << endl;
+    }
+    file.close();
+    this->filename = filename;
+}
+
+std::vector<double> CSV::getColumn(QString header)
+{
+    for(auto c : _columns) {
+        if(c.header == header) {
+            return c.data;
+        }
+    }
+    throw runtime_error("Header name not found");
+}
+
+std::vector<double> CSV::getColumn(unsigned int index)
+{
+    return _columns.at(index).data;
+}
+
+QString CSV::getHeader(unsigned int index)
+{
+    return _columns.at(index).header;
+}
+
+void CSV::addColumn(QString name, const std::vector<double> &data)
+{
+    Column c;
+    c.header = name;
+    c.data = data;
+    _columns.push_back(c);
+}
+
+QString CSV::getFilename() const
+{
+    return filename;
+}
+
+void CSV::setFilename(const QString &value)
+{
+    filename = value;
+}