Provide proper fallback if a bibliography processor is not found

[lyx.git] / src / DocIterator.cpp

diff --git a/src/DocIterator.cpp b/src/DocIterator.cpp
index 38f2393224b1e37b1839537f12ea6b85008ec8d8..ec85886657ffdbd5518e095f2437d5064b86943c 100644 (file)
--- a/src/DocIterator.cpp
+++ b/src/DocIterator.cpp
@@ -15,7 +15,12 @@
 #include "DocIterator.h"
 
 #include "Buffer.h"
+#include "BufferParams.h"
+#include "Encoding.h"
+#include "Font.h"
 #include "InsetList.h"
+#include "Language.h"
+#include "LaTeXFeatures.h"
 #include "Paragraph.h"
 #include "LyXRC.h"
 #include "Text.h"
@@ -618,11 +623,7 @@ void DocIterator::sanitize()
        for (size_t i = 0, n = sl.size(); i != n; ++i) {
                if (inset == 0) {
                        // FIXME
-                       LYXERR0(" Should not happen, but does e.g. after "
-                               "C-n C-l C-z S-C-z\n"
-                               << " or when a Buffer has been concurrently edited by two views"
-                               << '\n' << "dit: " << *this << '\n'
-                               << " lastpos: " << slices_[i].lastpos());
+                       LYXERR0("Null inset on cursor stack.");
                        fixIfBroken();
                        break;
                }
@@ -688,6 +689,74 @@ void DocIterator::append(DocIterator::idx_type idx, pos_type pos)
 }
 
 
+Encoding const * DocIterator::getEncoding() const
+{
+       if (empty())
+               return 0;
+
+       BufferParams const & bp = buffer()->params();
+       if (bp.useNonTeXFonts)
+               return encodings.fromLyXName("utf8-plain");
+
+       CursorSlice const & sl = innerTextSlice();
+       Text const & text = *sl.text();
+       Language const * lang =
+               text.getPar(sl.pit()).getFont(bp, sl.pos(),
+                                             text.outerFont(sl.pit())).language();
+       // If we have a custom encoding for the buffer, we do not switch encoding ...
+       bool const customenc =
+               bp.inputenc != "auto" && bp.inputenc != "default";
+       // ... except for non-CJKutf8 CJK (see output_latex::switchEncoding())
+       bool const cjk_non_utf8 =
+                       bp.encoding().name() != "utf8-cjk"
+                       || !LaTeXFeatures::isAvailable("CJKutf8");
+       Encoding const * enc =
+               (customenc
+                && (lang->encoding()->package() != Encoding::CJK || !cjk_non_utf8))
+               ? &bp.encoding() : lang->encoding();
+
+       // Some insets force specific encodings sometimes (e.g., listings in
+       // multibyte context forces singlebyte).
+       if (inset().forcedEncoding(enc, encodings.fromLyXName("iso8859-1"))) {
+               // Get the language outside the inset
+               size_t const n = depth();
+               for (size_t i = 0; i < n; ++i) {
+                       Text const & otext = *slices_[i].text();
+                       Language const * olang =
+                                       otext.getPar(slices_[i].pit()).getFont(bp, slices_[i].pos(),
+                                                                              otext.outerFont(slices_[i].pit())).language();
+                       Encoding const * oenc = olang->encoding();
+                       if (oenc->name() != "inherit")
+                               return inset().forcedEncoding(enc, oenc);
+               }
+               // Fall back to buffer encoding if no outer lang was found.
+               return inset().forcedEncoding(enc, &bp.encoding());
+       }
+
+       // Inherited encoding (latex_language) is determined by the context
+       // Look for the first outer encoding that is not itself "inherit"
+       if (lang->encoding()->name() == "inherit") {
+               size_t const n = depth();
+               for (size_t i = 0; i < n; ++i) {
+                       Text const & otext = *slices_[i].text();
+                       Language const * olang =
+                                       otext.getPar(slices_[i].pit()).getFont(bp, slices_[i].pos(),
+                                                                              otext.outerFont(slices_[i].pit())).language();
+                       // Again, if we have a custom encoding, this is used
+                       // instead of the language's.
+                       Encoding const * oenc =
+                                       (customenc
+                                        && (olang->encoding()->package() != Encoding::CJK || !cjk_non_utf8))
+                                       ? &bp.encoding() : olang->encoding();
+                       if (olang->encoding()->name() != "inherit")
+                               return oenc;
+               }
+       }
+
+       return enc;
+}
+
+
 ostream & operator<<(ostream & os, DocIterator const & dit)
 {
        for (size_t i = 0, n = dit.depth(); i != n; ++i)