restable: add menu entry to save table as csv file

src/qtgui/restable.cpp

@@ -32,6 +32,8 @@
 #include <QPainter>
 #include <QSplitter>
 #include <QClipboard>
+#include <QFileDialog>
+#include <QMessageBox>
 
 #include "recoll.h"
 #include "refcntr.h"
@@ -143,8 +145,9 @@ void ResTableDetailArea::createPopupMenu(const QPoint& pos)
 //// Data model methods
 ////
 
-// Routines used to extract named data from an Rcl::Doc. The basic one just uses the meta map. Others
-// (ie: the date ones) need to do a little processing
+// Routines used to extract named data from an Rcl::Doc. The basic one
+// just uses the meta map. Others (ie: the date ones) need to do a
+// little processing
 static string gengetter(const string& fld, const Rcl::Doc& doc)
 {
     map<string, string>::const_iterator it = doc.meta.find(fld);
@@ -362,6 +365,38 @@ QVariant RecollModel::data(const QModelIndex& index, int role) const
     return QString::fromUtf8(lr.front().c_str());
 }
 
+void RecollModel::saveAsCSV(FILE *fp)
+{
+    if (m_source.isNull())
+	return;
+
+    int cols = columnCount();
+    int rows = rowCount();
+    vector<string> tokens;
+
+    for (int col = 0; col < cols; col++) {
+	QString qs = headerData(col, Qt::Horizontal,Qt::DisplayRole).toString();
+	tokens.push_back((const char *)qs.toUtf8());
+    }
+    string csv;
+    stringsToCSV(tokens, csv);
+    fprintf(fp, "%s\n", csv.c_str());
+    tokens.clear();
+
+    for (int row = 0; row < rows; row++) {
+	Rcl::Doc doc;
+	if (!m_source->getDoc(row, doc)) {
+	    continue;
+	}
+	for (int col = 0; col < cols; col++) {
+	    tokens.push_back(m_getters[col](m_fields[col], doc));
+	}
+	stringsToCSV(tokens, csv);
+	fprintf(fp, "%s\n", csv.c_str());
+	tokens.clear();
+    }
+}
+
 // This gets called when the column headers are clicked
 void RecollModel::sort(int column, Qt::SortOrder order)
 {
@@ -594,6 +629,27 @@ void ResTable::resetSource()
     setDocSource(RefCntr<DocSequence>());
 }
 
+void ResTable::saveAsCSV()
+{
+    LOGDEB(("ResTable::saveAsCSV\n"));
+    if (!m_model)
+	return;
+    QString s = 
+	QFileDialog::getSaveFileName(this, //parent
+				     tr("Save table to CSV file"),
+				     QString::fromLocal8Bit(path_home().c_str())
+	    );
+    const char *tofile = s.toLocal8Bit();
+    FILE *fp = fopen(tofile, "w");
+    if (fp == 0) {
+	QMessageBox::warning(0, "Recoll", 
+			     tr("Can't open/create file: ") + s);
+	return;
+    }
+    m_model->saveAsCSV(fp);
+    fclose(fp);
+}
+
 // This is called when the sort order is changed from another widget
 void ResTable::onSortDataChanged(DocSeqSortSpec spec)
 {
@@ -806,6 +862,9 @@ void ResTable::createHeaderPopupMenu(const QPoint& pos)
     popup->addAction(tr("&Reset sort"), this, SLOT(resetSort()));
     popup->addSeparator();
 
+    popup->addAction(tr("&Save as CSV"), this, SLOT(saveAsCSV()));
+    popup->addSeparator();
+
     popup->addAction(tr("&Delete column"), this, SLOT(deleteColumn()));
     popup->addSeparator();
 

src/qtgui/restable.h

@@ -42,8 +42,8 @@ public:
 				 int role = Qt::DisplayRole ) const;
     virtual QVariant data(const QModelIndex& index, 
 			   int role = Qt::DisplayRole ) const;
+    virtual void saveAsCSV(FILE *fp);
     virtual void sort(int column, Qt::SortOrder order = Qt::AscendingOrder);
-
     // Specific methods
     virtual void readDocSource();
     virtual void setDocSource(RefCntr<DocSequence> nsource);
@@ -136,6 +136,7 @@ public slots:
     virtual void deleteColumn();
     virtual void addColumn();
     virtual void resetSort(); // Revert to natural (relevance) order
+    virtual void saveAsCSV(); 
     virtual void linkWasClicked(const QUrl&);
     virtual void makeRowVisible(int row);
 

src/utils/smallut.cpp

@@ -320,6 +320,36 @@ template void stringsToString<list<string> >(const list<string> &, string &);
 template void stringsToString<vector<string> >(const vector<string> &,string &);
 template void stringsToString<set<string> >(const set<string> &, string &);
 
+template <class T> void stringsToCSV(const T &tokens, string &s, 
+				     char sep)
+{
+    s.erase();
+    for (typename T::const_iterator it = tokens.begin();
+	 it != tokens.end(); it++) {
+	bool needquotes = false;
+	if (it->empty() || 
+	    it->find_first_of(string(1, sep) + "\"\n") != string::npos)
+	    needquotes = true;
+	if (it != tokens.begin())
+	    s.append(1, sep);
+	if (needquotes)
+	    s.append(1, '"');
+	for (unsigned int i = 0; i < it->length(); i++) {
+	    char car = it->at(i);
+	    if (car == '"') {
+		s.append(2, '"');
+	    } else {
+		s.append(1, car);
+	    }
+	}
+	if (needquotes)
+	    s.append(1, '"');
+    }
+}
+template void stringsToCSV<list<string> >(const list<string> &, string &, char);
+template void stringsToCSV<vector<string> >(const vector<string> &,string &, 
+					    char);
+
 void stringToTokens(const string& str, vector<string>& tokens,
 		    const string& delims, bool skipinit)
 {
@@ -1045,7 +1075,7 @@ int main(int argc, char **argv)
         cerr << "[" << *it << "] ";
     cerr << endl;
     exit(0);
-#elif 1
+#elif 0
     if (argc <=0 ) {
         cerr << "Usage: smallut <dateinterval>" << endl;
         exit(1);
@@ -1126,7 +1156,15 @@ int main(int argc, char **argv)
     in = "a: %a title: %(title) pcpc: %% %";
     pcSubst(in, out, substs);
     cout << "After map clear: " << in << " => " << out << endl;
-
+#elif 1
+    list<string> tokens;
+    tokens.push_back("");
+    tokens.push_back("a,b");
+    tokens.push_back("simple value");
+    tokens.push_back("with \"quotes\"");
+    string out;
+    stringsToCSV(tokens, out);
+    cout << "CSV line: [" << out << "]" << endl;
 #endif
 
 }

src/utils/smallut.h

@@ -93,6 +93,13 @@ template <class T> bool stringToStrings(const string& s, T &tokens,
  */
 template <class T> void stringsToString(const T &tokens, string &s);
 
+/**
+ * Strings to CSV string. tokens containing the separator are quoted (")
+ * " inside tokens is escaped as "" ([word "quote"] =>["word ""quote"""]
+ */
+template <class T> void stringsToCSV(const T &tokens, string &s, 
+					char sep = ',');
+
 /**
  * Split input string. No handling of quoting
  */