]> git.lyx.org Git - lyx.git/blobdiff - src/insets/InsetListings.cpp
de.po
[lyx.git] / src / insets / InsetListings.cpp
index b847131f57acb95002b3e707dc73fea573e045f3..b50e92623e4489181489cbf73f23737aa85be4f5 100644 (file)
@@ -119,6 +119,28 @@ void InsetListings::read(Lexer & lex)
 }
 
 
+Encoding const * InsetListings::forcedEncoding(Encoding const * inner_enc,
+                                              Encoding const * outer_enc) const
+{
+       // The listings package cannot deal with multi-byte-encoded
+       // glyphs, except for Xe/LuaTeX (with non-TeX fonts) or pLaTeX.
+       // Minted can deal with all encodings.
+       if (buffer().params().use_minted
+               || inner_enc->name() == "utf8-plain"
+               || (buffer().params().encoding().package() == Encoding::japanese
+                       && inner_enc->package() == Encoding::japanese)
+               || inner_enc->hasFixedWidth())
+               return 0;
+
+       // We try if there's a singlebyte encoding for the outer
+       // language; if not, fall back to latin1.
+       // Power-users can set inputenc to utf8-plain to bypass this workaround
+       // and provide alternatives in the user-preamble.
+       return (outer_enc->hasFixedWidth()) ?
+                       outer_enc : encodings.fromLyXName("iso8859-1");
+}
+
+
 void InsetListings::latex(otexstream & os, OutputParams const & runparams) const
 {
        string param_string = params().params();
@@ -148,8 +170,20 @@ void InsetListings::latex(otexstream & os, OutputParams const & runparams) const
                param_string = getStringFromVector(opts, ",");
        }
        // Minted needs a language specification
-       if (minted_language.empty())
-               minted_language = "TeX";
+       if (minted_language.empty()) {
+               // If a language has been set globally, use that,
+               // otherwise use TeX by default
+               string const & blp = buffer().params().listings_params;
+               size_t start = blp.find("language=");
+               if (start != string::npos) {
+                       start += strlen("language=");
+                       size_t len = blp.find(",", start);
+                       if (len != string::npos)
+                               len -= start;
+                       minted_language = blp.substr(start, len);
+               } else
+                       minted_language = "TeX";
+       }
 
        // get the paragraphs. We can not output them directly to given odocstream
        // because we can not yet determine the delimiter character of \lstinline
@@ -160,30 +194,22 @@ void InsetListings::latex(otexstream & os, OutputParams const & runparams) const
 
        bool encoding_switched = false;
        Encoding const * const save_enc = runparams.encoding;
-       // The listings package cannot deal with multi-byte-encoded
-       // glyphs, except if full-unicode aware backends
-       // such as XeTeX or LuaTeX are used, and with pLaTeX.
-       bool const multibyte_possible = use_minted || runparams.isFullUnicode()
-           || (buffer().params().encoding().package() == Encoding::japanese
-               && runparams.encoding->package() == Encoding::japanese);
 
-       if (!multibyte_possible && !runparams.encoding->hasFixedWidth()) {
+       Encoding const * const outer_encoding =
+               (runparams.local_font != 0) ?
+                       runparams.local_font->language()->encoding()
+                       : buffer().params().language->encoding();
+       Encoding const * fixedlstenc = forcedEncoding(runparams.encoding, outer_encoding);
+       if (fixedlstenc) {
                // We need to switch to a singlebyte encoding, due to
                // the restrictions of the listings package (see above).
                // This needs to be consistent with
                // LaTeXFeatures::getTClassI18nPreamble().
-               Language const * const outer_language =
-                       (runparams.local_font != 0) ?
-                               runparams.local_font->language()
-                               : buffer().params().language;
-               // We try if there's a singlebyte encoding for the current
-               // language; if not, fall back to latin1.
-               Encoding const * const lstenc =
-                       (outer_language->encoding()->hasFixedWidth()) ?
-                               outer_language->encoding()
-                               : encodings.fromLyXName("iso8859-1");
-               switchEncoding(os.os(), buffer().params(), runparams, *lstenc, true);
-               runparams.encoding = lstenc;
+               // We need to put this into a group in order to prevent encoding leaks
+               // (happens with cprotect).
+               os << "\\bgroup";
+               switchEncoding(os.os(), buffer().params(), runparams, *fixedlstenc, true);
+               runparams.encoding = fixedlstenc;
                encoding_switched = true;
        }
 
@@ -191,7 +217,7 @@ void InsetListings::latex(otexstream & os, OutputParams const & runparams) const
                                && par->getInset(0)->lyxCode() == CAPTION_CODE;
 
        while (par != end) {
-               pos_type siz = par->size();
+               pos_type const siz = par->size();
                bool captionline = false;
                for (pos_type i = 0; i < siz; ++i) {
                        if (i == 0 && par->isInset(i) && i + 1 == siz)
@@ -268,7 +294,7 @@ void InsetListings::latex(otexstream & os, OutputParams const & runparams) const
                        os << "\\mintinline";
                        if (!param_string.empty())
                                os << "[" << from_utf8(param_string) << "]";
-                       os << "{" << minted_language << "}";
+                       os << "{" << ascii_lowercase(minted_language) << "}";
                } else {
                        os << "\\lstinline";
                        if (!param_string.empty())
@@ -294,7 +320,7 @@ void InsetListings::latex(otexstream & os, OutputParams const & runparams) const
                os << breakln << "\\begin{minted}";
                if (!param_string.empty())
                        os << "[" << param_string << "]";
-               os << "{" << minted_language << "}\n"
+               os << "{" << ascii_lowercase(minted_language) << "}\n"
                   << code << breakln << "\\end{minted}\n";
                if (isfloat) {
                        if (!caption.str.empty())
@@ -327,14 +353,16 @@ void InsetListings::latex(otexstream & os, OutputParams const & runparams) const
 
        if (encoding_switched){
                // Switch back
-               switchEncoding(os.os(), buffer().params(), runparams, *save_enc, true);
+               switchEncoding(os.os(), buffer().params(),
+                              runparams, *save_enc, true, true);
+               os << "\\egroup" << breakln;
                runparams.encoding = save_enc;
        }
 
        if (!uncodable.empty() && !runparams.silent) {
                // issue a warning about omitted characters
                // FIXME: should be passed to the error dialog
-               if (!multibyte_possible && !runparams.encoding->hasFixedWidth())
+               if (fixedlstenc)
                        frontend::Alert::warning(_("Uncodable characters in listings inset"),
                                bformat(_("The following characters in one of the program listings are\n"
                                          "not representable in the current encoding and have been omitted:\n%1$s.\n"
@@ -441,6 +469,7 @@ bool InsetListings::getStatus(Cursor & cur, FuncRequest const & cmd,
                                return true;
                        }
                }
+               // fall through
                default:
                        return InsetCaptionable::getStatus(cur, cmd, status);
        }
@@ -512,10 +541,17 @@ TexString InsetListings::getCaption(OutputParams const & runparams) const
        // NOTE that } is not allowed in blah2.
        regex const reg("(.*)\\\\label\\{(.*?)\\}(.*)");
        string const new_cap("$1$3},label={$2");
+       // Remove potential \protect'ion of \label.
+       docstring capstr = subst(cap.str, from_ascii("\\protect\\label"),
+                                from_ascii("\\label"));
        // TexString validity: the substitution preserves the number of newlines.
        // Moreover we assume that $2 does not contain newlines, so that the texrow
        // information remains accurate.
-       cap.str = from_utf8(regex_replace(to_utf8(cap.str), reg, new_cap));
+       // Replace '\n' with an improbable character from Private Use Area-A
+       // and then return to '\n' after the regex replacement.
+       capstr = subst(capstr, char_type('\n'), 0xffffd);
+       cap.str = subst(from_utf8(regex_replace(to_utf8(capstr), reg, new_cap)),
+                       0xffffd, char_type('\n'));
        return cap;
 }