Use ErrorList to handle encoding error

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@22208 a592a061-630c-0410-9148-cb99ea01b6c8

src/Buffer.cpp

@@ -999,19 +999,31 @@ bool Buffer::makeLaTeXFile(FileName const & fname,
 		return false;
 
 	//TexStream ts(ofs.rdbuf(), &texrow());
-
+	ErrorList & errorList = d->errorLists["Export"];
+	errorList.clear();
 	bool failed_export = false;
 	try {
 		d->texrow.reset();
 		writeLaTeXSource(ofs, original_path,
 		      runparams, output_preamble, output_body);
 	}
+	catch (EncodingException & e) {
+		docstring msg = _("Could not find LaTeX command for character '%'");
+		msg[msg.size() - 2] = e.failed_char;
+		errorList.push_back(ErrorItem(msg, _("Some characters of your document are probably not "
+				"representable in the chosen encoding.\n"
+				"Changing the document encoding to utf8 could help."),
+				e.par_id, e.pos, e.pos + 1));
+		failed_export = true;			
+	}
 	catch (iconv_codecvt_facet_exception & e) {
-		lyxerr << "Caught iconv exception: " << e.what() << endl;
+		errorList.push_back(ErrorItem(_("iconv conversion failed"),
+			_(e.what()), -1, 0, 0));
 		failed_export = true;
 	}
 	catch (exception const & e) {
-		lyxerr << "Caught \"normal\" exception: " << e.what() << endl;
+		errorList.push_back(ErrorItem(_("conversion failed"),
+			_(e.what()), -1, 0, 0));
 		failed_export = true;
 	}
 	catch (...) {
@@ -1025,14 +1037,8 @@ bool Buffer::makeLaTeXFile(FileName const & fname,
 		lyxerr << "File '" << fname << "' was not closed properly." << endl;
 	}
 
-	if (failed_export) {
-		Alert::error(_("Encoding error"),
-			_("Some characters of your document are probably not "
-			"representable in the chosen encoding.\n"
-			"Changing the document encoding to utf8 could help."));
-		return false;
-	}
-	return true;
+	errors("Export");
+	return !failed_export;
 }
 
 

src/Encoding.cpp

@@ -247,6 +247,18 @@ char_type const max_ucs4 = 0x110000;
 } // namespace anon
 
 
+EncodingException::EncodingException(char_type c)
+	: failed_char(c), par_id(0), pos(0)
+{
+}
+
+
+const char * EncodingException::what() const throw()
+{
+	return "Could not find LaTeX command for a character";
+}
+
+
 Encoding::Encoding(string const & n, string const & l, string const & i,
 		   bool f, Encoding::Package p)
 	: Name_(n), LatexName_(l), iconvName_(i), fixedwidth_(f), package_(p)
@@ -321,10 +333,7 @@ docstring const Encoding::latexChar(char_type c) const
 		// c cannot be encoded in this encoding
 		CharInfoMap::const_iterator const it = unicodesymbols.find(c);
 		if (it == unicodesymbols.end())
-			lyxerr << "Could not find LaTeX command for character 0x"
-			       << hex << c << dec
-			       << ".\nLaTeX export will fail."
-			       << endl;
+			throw EncodingException(c);
 		else
 			return it->second.command;
 	}

src/Encoding.h

@@ -14,6 +14,7 @@
 #define ENCODING_H
 
 #include "support/docstring.h"
+#include "support/types.h"
 
 #include <map>
 #include <set>
@@ -24,6 +25,17 @@ namespace support { class FileName; }
 
 class LaTeXFeatures;
 
+class EncodingException : public std::exception {
+public:
+	EncodingException(char_type c);
+	virtual ~EncodingException() throw() {}
+	virtual const char * what() const throw();
+ 
+	char_type failed_char;
+	int par_id;
+	pos_type pos;
+};
+
 
 ///
 class Encoding {

src/Paragraph.cpp

@@ -2024,9 +2024,17 @@ bool Paragraph::latex(Buffer const & buf,
 					texrow, rp, running_font,
 					basefont, outerfont, open_font,
 					runningChange, *style, i, column);
-		else
-			d->latexSpecialChar(os, rp, running_font, runningChange,
-				*style, i, column);
+		else {
+			try {
+				d->latexSpecialChar(os, rp, running_font, runningChange,
+					*style, i, column);
+			} catch (EncodingException & e) {
+				// add location information and throw again.
+				e.par_id = id();
+				e.pos = i;
+				throw(e);
+			}
+		}
 
 		// Set the encoding to that returned from simpleTeXSpecialChars (see
 		// comment for encoding member in OutputParams.h)