Validate if graphics path is encodable

Fixes #11688

diff --git a/src/insets/InsetGraphics.cpp b/src/insets/InsetGraphics.cpp
index 873073e8acd3b8cc964c13cbc277eb2e7c0dc952..c661d969ef1eca62600167f802595f897ec4d6c4 100644 (file)
--- a/src/insets/InsetGraphics.cpp
+++ b/src/insets/InsetGraphics.cpp
@@ -54,6 +54,7 @@ TODO
 #include "Converter.h"
 #include "Cursor.h"
 #include "DispatchResult.h"
+#include "Encoding.h"
 #include "ErrorList.h"
 #include "Exporter.h"
 #include "Format.h"
@@ -871,8 +872,43 @@ void InsetGraphics::latex(otexstream & os,
        // Convert the file if necessary.
        // Remove the extension so LaTeX will use whatever is appropriate
        // (when there are several versions in different formats)
-       string file_path = prepareFile(runparams);
-       latex_str += file_path;
+       docstring file_path = from_utf8(prepareFile(runparams));
+       // we can only output characters covered by the current
+       // encoding!
+       docstring uncodable;
+       docstring encodable_file_path;
+       for (size_type i = 0 ; i < file_path.size() ; ++i) {
+               char_type c = file_path[i];
+               try {
+                       if (runparams.encoding->encodable(c))
+                               encodable_file_path += c;
+                       else if (runparams.dryrun) {
+                               encodable_file_path += "<" + _("LyX Warning: ")
+                                               + _("uncodable character") + " '";
+                               encodable_file_path += docstring(1, c);
+                               encodable_file_path += "'>";
+                       } else
+                               uncodable += c;
+               } catch (EncodingException & /* e */) {
+                       if (runparams.dryrun) {
+                               encodable_file_path += "<" + _("LyX Warning: ")
+                                               + _("uncodable character") + " '";
+                               encodable_file_path += docstring(1, c);
+                               encodable_file_path += "'>";
+                       } else
+                               uncodable += c;
+               }
+       }
+       if (!uncodable.empty() && !runparams.silent) {
+               // issue a warning about omitted characters
+               // FIXME: should be passed to the error dialog
+               frontend::Alert::warning(_("Uncodable characters in path"),
+                       bformat(_("The following characters in one of the graphic paths are\n"
+                                 "not representable in the current encoding and have been omitted: %1$s."
+                                 "You need to adapt either the encoding or the path."),
+                       uncodable));
+       }
+       latex_str += to_utf8(encodable_file_path);
        latex_str += '}' + after;
        // FIXME UNICODE
        os << from_utf8(latex_str);