Improve info display for biblatex databases, part III

When resolving biblatex's xdata references, consider that xdata fields
can contain a comma-separated list of keys, not just a single key like
crossref.

diff --git a/src/BiblioInfo.cpp b/src/BiblioInfo.cpp
index b74984ab4497311749d5656aab26f70fdc48aef4..7653db0e549c814ba5cefc02989826133ba1a176 100644 (file)
--- a/src/BiblioInfo.cpp
+++ b/src/BiblioInfo.cpp
@@ -799,15 +799,21 @@ vector<docstring> const BiblioInfo::getXRefs(BibTeXInfo const & data, bool const
        if (!nested && !data["crossref"].empty())
                result.push_back(data["crossref"]);
        // Biblatex's xdata field. Infinitely nestable.
-       docstring const xdatakey = data["xdata"];
-       if (!xdatakey.empty()) {
-               result.push_back(xdatakey);
-               BiblioInfo::const_iterator it = find(xdatakey);
-               if (it != end()) {
-                       BibTeXInfo const & xdata = it->second;
-                       vector<docstring> const nxdata = getXRefs(xdata, true);
-                       if (!nxdata.empty())
-                               result.insert(result.end(), nxdata.begin(), nxdata.end());
+       // XData field can consist of a comma-separated list of keys
+       vector<docstring> const xdatakeys = getVectorFromString(data["xdata"]);
+       if (!xdatakeys.empty()) {
+               vector<docstring>::const_iterator xit = xdatakeys.begin();
+               vector<docstring>::const_iterator xen = xdatakeys.end();
+               for (; xit != xen; ++xit) {
+                       docstring const xdatakey = *xit;
+                       result.push_back(xdatakey);
+                       BiblioInfo::const_iterator it = find(xdatakey);
+                       if (it != end()) {
+                               BibTeXInfo const & xdata = it->second;
+                               vector<docstring> const nxdata = getXRefs(xdata, true);
+                               if (!nxdata.empty())
+                                       result.insert(result.end(), nxdata.begin(), nxdata.end());
+                       }
                }
        }
        return result;