Add indexing of XISF

loadrunable.cpp

@@ -449,8 +449,32 @@ bool readFITSHeader(const QString &path, ImageInfoData &info)
     int status = 0;
     fits_open_diskfile(&fr, path.toLocal8Bit().data(), READONLY, &status);
 
-    status = loadFITSHeader(fr, info);
-
-    fits_close_file(fr, &status);
+    if(fr && status == 0)
+    {
+        status = loadFITSHeader(fr, info);
+        fits_close_file(fr, &status);
+    }
     return status == 0;
 }
+
+bool readXISFHeader(const QString &path, ImageInfoData &info)
+{
+    try
+    {
+        pcl::String pclPath = path.utf16();
+        pcl::XISFReader xisf;
+        xisf.Open(pclPath);
+
+        auto fitskeywords = xisf.ReadFITSKeywords();
+        for(auto fits : fitskeywords)
+        {
+            info.fitsHeader.append({fits.name.c_str(), fits.value.c_str(), fits.comment.c_str()});
+        }
+    }
+    catch (pcl::Error err)
+    {
+        qDebug() << err.FormatInfo().ToUTF8().c_str();
+        return false;
+    }
+    return true;
+}