mirror of
https://git.lyx.org/repos/lyx.git
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713 lines
22 KiB
C++
713 lines
22 KiB
C++
/**
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* \file InsetListings.cpp
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* This file is part of LyX, the document processor.
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* Licence details can be found in the file COPYING.
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*
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* \author Bo Peng
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* \author Jürgen Spitzmüller
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*
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* Full author contact details are available in file CREDITS.
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*/
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#include <config.h>
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#include "InsetListings.h"
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#include "Buffer.h"
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#include "BufferView.h"
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#include "BufferParams.h"
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#include "Cursor.h"
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#include "Encoding.h"
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#include "FuncRequest.h"
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#include "FuncStatus.h"
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#include "InsetCaption.h"
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#include "InsetLabel.h"
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#include "InsetLayout.h"
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#include "Language.h"
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#include "LaTeXFeatures.h"
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#include "output_latex.h"
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#include "output_docbook.h"
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#include "output_xhtml.h"
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#include "TexRow.h"
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#include "texstream.h"
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#include "support/debug.h"
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#include "support/docstream.h"
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#include "support/gettext.h"
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#include "support/Lexer.h"
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#include "support/lstrings.h"
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#include "support/lassert.h"
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#include "frontends/alert.h"
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#include "frontends/Application.h"
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#include <cstring>
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#include <regex>
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#include <sstream>
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using namespace std;
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using namespace lyx::support;
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namespace lyx {
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InsetListings::InsetListings(Buffer * buf, InsetListingsParams const & par)
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: InsetCaptionable(buf,"listing")
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{
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params_.setMinted(buffer().params().use_minted);
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status_ = par.status();
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}
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InsetListings::~InsetListings()
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{
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hideDialogs("listings", this);
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}
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int InsetListings::rowFlags() const
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{
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return params().isInline() || params().isFloat() ? Inline : Display | AlignLeft;
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}
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docstring InsetListings::layoutName() const
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{
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if (buffer().params().use_minted)
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return from_ascii("MintedListings");
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else
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return from_ascii("Listings");
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}
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void InsetListings::write(ostream & os) const
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{
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os << "listings" << "\n";
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InsetListingsParams const & par = params();
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// parameter string is encoded to be a valid lyx token.
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string opt = par.encodedString();
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if (!opt.empty())
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os << "lstparams \"" << opt << "\"\n";
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if (par.isInline())
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os << "inline true\n";
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else
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os << "inline false\n";
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InsetCaptionable::write(os);
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}
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void InsetListings::read(Lexer & lex)
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{
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while (lex.isOK()) {
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lex.next();
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string token = lex.getString();
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if (token == "lstparams") {
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lex.next();
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string const value = lex.getString();
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params().fromEncodedString(value);
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} else if (token == "inline") {
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lex.next();
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params().setInline(lex.getBool());
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} else {
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// no special option, push back 'status' etc
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lex.pushToken(token);
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break;
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}
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}
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InsetCaptionable::read(lex);
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}
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Encoding const * InsetListings::forcedEncoding(Encoding const * inner_enc,
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Encoding const * outer_enc) const
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{
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// The listings package cannot deal with multi-byte-encoded
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// glyphs, except for Xe/LuaTeX (with non-TeX fonts) or pLaTeX.
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// Minted can deal with all encodings.
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if (buffer().params().use_minted
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|| inner_enc->name() == "utf8-plain"
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|| inner_enc->package() == Encoding::japanese
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|| inner_enc->hasFixedWidth())
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return 0;
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// We try if there's a singlebyte encoding for the outer
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// language; if not, fall back to latin1.
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// Power-users can set inputenc to utf8-plain to bypass this workaround
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// and provide alternatives in the user-preamble.
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return (outer_enc->hasFixedWidth()) ?
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outer_enc : encodings.fromLyXName("iso8859-1");
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}
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void InsetListings::latex(otexstream & os, OutputParams const & runparams) const
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{
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string param_string = params().params();
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// NOTE: I use {} to quote text, which is an experimental feature
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// of the listings package (see page 25 of the manual)
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bool const isInline = params().isInline();
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bool const use_minted = buffer().params().use_minted;
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static regex const reg1("(.*)(basicstyle=\\{)([^\\}]*)(\\\\ttfamily)([^\\}]*)(\\})(.*)");
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static regex const reg2("(.*)(basicstyle=\\{)([^\\}]*)(\\\\rmfamily)([^\\}]*)(\\})(.*)");
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static regex const reg3("(.*)(basicstyle=\\{)([^\\}]*)(\\\\sffamily)([^\\}]*)(\\})(.*)");
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static regex const reg4("(.*)(basicstyle=\\{)([^\\}]*)(\\\\(tiny|scriptsize|footnotesize|small|normalsize|large|Large))([^\\}]*)(\\})(.*)");
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static regex const reg5("(.*)(fontfamily=)(tt|sf|rm)(.*)");
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static regex const reg6("(.*)(fontsize=\\{)(\\\\(tiny|scriptsize|footnotesize|small|normalsize|large|Large))(\\})(.*)");
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if (use_minted) {
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// If params have been entered with "listings", and then the user switched to "minted",
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// we have params that need to be translated.
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// FIXME: We should use a backend-abstract syntax in listings params instead!
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// Substitute fontstyle option
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smatch sub;
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if (regex_match(param_string, sub, reg1))
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param_string = sub.str(1) + "fontfamily=tt," + sub.str(2) + sub.str(3)
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+ sub.str(5) + sub.str(6) + sub.str(7);
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if (regex_match(param_string, sub, reg2))
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param_string = sub.str(1) + "fontfamily=rm," + sub.str(2) + sub.str(3)
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+ sub.str(5) + sub.str(6) + sub.str(7);
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if (regex_match(param_string, sub, reg3))
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param_string = sub.str(1) + "fontfamily=sf," + sub.str(2) + sub.str(3)
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+ sub.str(5) + sub.str(6) + sub.str(7);
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// as well as fontsize option
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if (regex_match(param_string, sub, reg4))
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param_string = sub.str(1) + "fontsize={" + sub.str(4) + sub.str(3) + sub.str(7) + sub.str(8);
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} else {
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// And the same vice versa
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// Substitute fontstyle option
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smatch sub;
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string basicstyle;
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if (regex_match(param_string, sub, reg5)) {
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basicstyle = "\\" + sub.str(3) + "family";
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param_string = sub.str(1) + sub.str(4);
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}
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// as well as fontsize option
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if (regex_match(param_string, sub, reg6)) {
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basicstyle += sub.str(3);
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param_string = sub.str(1) + sub.str(6);
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}
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if (!basicstyle.empty())
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param_string = rtrim(param_string, ",") + ",basicstyle={" + basicstyle + "}";
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}
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if (runparams.use_polyglossia && runparams.local_font
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&& runparams.local_font->isRightToLeft()) {
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// We need to use the *latin switches (#11554)
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smatch sub;
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if (regex_match(param_string, sub, reg1))
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param_string = sub.str(1) + sub.str(2) + sub.str(3) + sub.str(4)
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+ "latin" + sub.str(5) + sub.str(6) + sub.str(7);
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if (regex_match(param_string, sub, reg2))
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param_string = sub.str(1) + sub.str(2) + sub.str(3) + sub.str(4)
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+ "latin" + sub.str(5) + sub.str(6) + sub.str(7);
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if (regex_match(param_string, sub, reg3))
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param_string = sub.str(1) + sub.str(2) + sub.str(3) + sub.str(4)
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+ "latin" + sub.str(5) + sub.str(6) + sub.str(7);
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}
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string minted_language;
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string float_placement;
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bool const isfloat = params().isFloat();
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if (use_minted && (isfloat || contains(param_string, "language="))) {
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// Get float placement and/or language of the code,
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// then remove the relative options.
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vector<string> opts =
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getVectorFromString(param_string, ",", false);
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for (size_t i = 0; i < opts.size(); ++i) {
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if (prefixIs(opts[i], "float")) {
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if (prefixIs(opts[i], "float="))
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float_placement = opts[i].substr(6);
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opts.erase(opts.begin() + int(i--));
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}
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else if (prefixIs(opts[i], "language=")) {
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minted_language = opts[i].substr(9);
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opts.erase(opts.begin() + int(i--));
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}
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}
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param_string = getStringFromVector(opts, ",");
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}
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// Minted needs a language specification
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if (minted_language.empty()) {
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// If a language has been set globally, use that,
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// otherwise use TeX by default
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string const & blp = buffer().params().listings_params;
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size_t start = blp.find("language=");
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if (start != string::npos) {
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start += strlen("language=");
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size_t len = blp.find(",", start);
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if (len != string::npos)
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len -= start;
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minted_language = blp.substr(start, len);
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} else
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minted_language = "TeX";
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}
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// get the paragraphs. We can not output them directly to given odocstream
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// because we can not yet determine the delimiter character of \lstinline
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docstring code;
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docstring uncodable;
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ParagraphList::const_iterator par = paragraphs().begin();
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ParagraphList::const_iterator end = paragraphs().end();
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bool encoding_switched = false;
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Encoding const * const save_enc = runparams.encoding;
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Encoding const * const outer_encoding =
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getLocalOrDefaultLang(runparams)->encoding();
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Encoding const * fixedlstenc = forcedEncoding(runparams.encoding, outer_encoding);
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if (fixedlstenc) {
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// We need to switch to a singlebyte encoding, due to
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// the restrictions of the listings package (see above).
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// This needs to be consistent with
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// LaTeXFeatures::getTClassI18nPreamble().
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// We need to put this into a group in order to prevent encoding leaks
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// (happens with cprotect).
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os << "\\bgroup";
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switchEncoding(os.os(), buffer().params(), runparams, *fixedlstenc, true);
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runparams.encoding = fixedlstenc;
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encoding_switched = true;
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}
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bool const captionfirst = !isfloat && par->isInset(0)
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&& par->getInset(0)->lyxCode() == CAPTION_CODE;
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while (par != end) {
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pos_type const siz = par->size();
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bool captionline = false;
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for (pos_type i = 0; i < siz; ++i) {
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if (i == 0 && par->isInset(i) && i + 1 == siz)
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captionline = true;
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// ignore all struck out text and (caption) insets
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if (par->isDeleted(i)
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|| (par->isInset(i) && par->getInset(i)->lyxCode() == CAPTION_CODE))
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continue;
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if (par->isInset(i)) {
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// Currently, this can only be a quote inset
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// that is output as plain quote here, but
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// we use more generic code anyway.
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otexstringstream ots;
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OutputParams rp = runparams;
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rp.pass_thru = true;
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par->getInset(i)->latex(ots, rp);
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code += ots.str();
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continue;
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}
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char_type c = par->getChar(i);
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// we can only output characters covered by the current
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// encoding!
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try {
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if (runparams.encoding->encodable(c))
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code += c;
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else if (runparams.dryrun) {
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code += "<" + _("LyX Warning: ")
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+ _("uncodable character") + " '";
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code += docstring(1, c);
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code += "'>";
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} else
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uncodable += c;
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} catch (EncodingException & /* e */) {
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if (runparams.dryrun) {
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code += "<" + _("LyX Warning: ")
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+ _("uncodable character") + " '";
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code += docstring(1, c);
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code += "'>";
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} else
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uncodable += c;
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}
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}
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++par;
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// Add new line between paragraphs in displayed listings.
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// Exception: merged paragraphs in change tracking mode.
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// Also, for the inline case, if there are multiple paragraphs
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// they are simply joined. Otherwise, expect latex errors.
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if (par != end && !isInline && !captionline && !par->parEndChange().deleted())
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code += "\n";
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}
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if (isInline) {
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static const docstring delimiters =
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from_utf8("!*()-=+|;:'\"`,<.>/?QWERTYUIOPASDFGHJKLZXCVBNMqwertyuiopasdfghjklzxcvbnm");
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size_t pos = delimiters.find_first_not_of(code);
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// This code piece contains all possible special character? !!!
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// Replace ! with a warning message and use ! as delimiter.
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if (pos == string::npos) {
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docstring delim_error = "<" + _("LyX Warning: ")
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+ _("no more lstline delimiters available") + ">";
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code = subst(code, from_ascii("!"), delim_error);
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pos = 0;
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if (!runparams.dryrun && !runparams.silent) {
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// FIXME: warning should be passed to the error dialog
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frontend::Alert::warning(_("Running out of delimiters"),
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_("For inline program listings, one character must be reserved\n"
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"as a delimiter. One of the listings, however, uses all available\n"
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"characters, so none is left for delimiting purposes.\n"
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"For the time being, I have replaced '!' by a warning, but you\n"
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"must investigate!"));
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}
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}
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docstring const delim(1, delimiters[pos]);
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if (use_minted) {
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os << "\\mintinline";
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if (!param_string.empty())
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os << "[" << from_utf8(param_string) << "]";
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os << "{" << ascii_lowercase(minted_language) << "}";
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} else {
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os << "\\lstinline";
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if (!param_string.empty())
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os << "[" << from_utf8(param_string) << "]";
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else if (pos >= delimiters.find('Q'))
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// We need to terminate the command before
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// the delimiter
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os << " ";
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}
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os << delim << code << delim;
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} else if (use_minted) {
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OutputParams rp = runparams;
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rp.moving_arg = true;
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TexString caption = getCaption(rp);
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if (isfloat) {
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os << breakln << "\\begin{listing}";
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if (!float_placement.empty())
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os << '[' << float_placement << "]";
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} else if (captionfirst && !caption.str.empty()) {
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os << breakln << "\\lyxmintcaption[t]{"
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<< std::move(caption) << "}\n";
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}
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os << breakln << "\\begin{minted}";
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if (!param_string.empty())
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os << "[" << param_string << "]";
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os << "{" << ascii_lowercase(minted_language) << "}\n"
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<< code << breakln << "\\end{minted}\n";
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if (isfloat) {
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if (!caption.str.empty())
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os << "\\caption{" << std::move(caption) << "}\n";
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os << "\\end{listing}\n";
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} else if (!captionfirst && !caption.str.empty()) {
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os << breakln << "\\lyxmintcaption[b]{"
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<< std::move(caption) << "}";
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}
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} else {
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OutputParams rp = runparams;
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rp.moving_arg = true;
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TexString caption = getCaption(rp);
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os << breakln << "\\begin{lstlisting}";
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if (param_string.empty() && caption.str.empty())
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os << "\n";
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else {
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if (!runparams.nice)
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os << safebreakln;
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os << "[";
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if (!caption.str.empty()) {
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os << "caption={" << std::move(caption) << '}';
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if (!param_string.empty())
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os << ',';
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}
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os << from_utf8(param_string) << "]\n";
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}
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os << code << breakln << "\\end{lstlisting}\n";
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}
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if (encoding_switched) {
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// Switch back
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switchEncoding(os.os(), buffer().params(),
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runparams, *save_enc, true, true);
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if (!isInline)
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// Go out of vertical mode. Otherwise \egroup
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// causes a paragraph break (#12821)
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os << "\\leavevmode";
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os << "\\egroup" << breakln;
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runparams.encoding = save_enc;
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}
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if (!uncodable.empty() && !runparams.silent) {
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// issue a warning about omitted characters
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// FIXME: should be passed to the error dialog
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if (fixedlstenc)
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frontend::Alert::warning(_("Uncodable characters in listings inset"),
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bformat(_("The following characters in one of the program listings are\n"
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"not representable in the current encoding and have been omitted:\n%1$s.\n"
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"This is due to a restriction of the listings package, which does\n"
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"not support your encoding '%2$s'.\n"
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"Toggling 'Use non-TeX fonts' in Document > Settings...\n"
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"might help."),
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uncodable, _(runparams.encoding->guiName())));
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else
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frontend::Alert::warning(_("Uncodable characters in listings inset"),
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bformat(_("The following characters in one of the program listings are\n"
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"not representable in the current encoding and have been omitted:\n%1$s."),
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uncodable));
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}
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}
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docstring InsetListings::xhtml(XMLStream & os, OutputParams const & rp) const
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{
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bool const isInline = params().isInline();
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if (isInline)
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os << xml::CompTag("br");
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else {
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os << xml::StartTag("div", "class='float-listings'");
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docstring caption = getCaptionHTML(rp);
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if (!caption.empty())
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os << xml::StartTag("div", "class='listings-caption'")
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<< XMLStream::ESCAPE_NONE
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<< caption << xml::EndTag("div");
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}
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string const & tag = getLayout().htmltag();
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string attr = "class='listings";
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string const lang = params().getParamValue("language");
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if (!lang.empty())
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attr += " " + lang;
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attr += "'";
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os << xml::StartTag(tag, attr);
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OutputParams newrp = rp;
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newrp.html_disable_captions = true;
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// We don't want to convert dashes here. That's the only conversion we
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// do for XHTML, so this is safe.
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|
newrp.pass_thru = true;
|
|
docstring def = InsetText::insetAsXHTML(os, newrp, InsetText::JustText);
|
|
os << xml::EndTag(tag);
|
|
|
|
if (isInline) {
|
|
os << xml::CompTag("br");
|
|
} else {
|
|
if (!def.empty()) {
|
|
os << '\n' << def;
|
|
}
|
|
os << xml::EndTag("div");
|
|
}
|
|
return {};
|
|
}
|
|
|
|
|
|
void InsetListings::docbook(XMLStream & xs, OutputParams const & rp) const
|
|
{
|
|
InsetLayout const & il = getLayout();
|
|
bool isInline = params().isInline();
|
|
|
|
if (!isInline && !xs.isLastTagCR())
|
|
xs << xml::CR();
|
|
|
|
// In case of caption, the code must be wrapped, for instance in a figure. Also detect if there is a label.
|
|
// http://www.sagehill.net/docbookxsl/ProgramListings.html
|
|
// TODO: parts of this code could be merged with InsetFloat and findLabelInParagraph.
|
|
InsetCaption const * caption = getCaptionInset();
|
|
if (caption) {
|
|
InsetLabel const * label = getLabelInset();
|
|
|
|
// Ensure that the label will not be output a second time as an anchor.
|
|
OutputParams rpNoLabel = rp;
|
|
if (label)
|
|
rpNoLabel.docbook_anchors_to_ignore.emplace(label->screenLabel());
|
|
|
|
// Prepare the right set of attributes, including the label.
|
|
docstring attr = from_ascii("type='listing'");
|
|
if (label)
|
|
attr += " xml:id=\"" + xml::cleanID(label->screenLabel()) + "\"";
|
|
|
|
// Finally, generate the wrapper (including the label).
|
|
xs << xml::StartTag("figure", attr);
|
|
xs << xml::CR();
|
|
xs << xml::StartTag("title");
|
|
xs << XMLStream::ESCAPE_NONE << getCaptionDocBook(rpNoLabel);
|
|
xs << xml::EndTag("title");
|
|
xs << xml::CR();
|
|
}
|
|
|
|
// Forge the attributes.
|
|
std::string attrs;
|
|
if (!il.docbookattr().empty())
|
|
attrs += " role=\"" + il.docbookattr() + "\"";
|
|
std::string const lang = params().getParamValue("language");
|
|
if (!lang.empty())
|
|
attrs += " language=\"" + lang + "\"";
|
|
|
|
// Determine the tag to use. Use the layout-defined value if outside a paragraph.
|
|
std::string tag = il.docbooktag();
|
|
if (isInline)
|
|
tag = "code";
|
|
|
|
// Start the listing.
|
|
xs << xml::StartTag(tag, attrs);
|
|
xs.startDivision(false);
|
|
|
|
// Deal with the content of the listing.
|
|
OutputParams newrp = rp;
|
|
newrp.pass_thru = true;
|
|
newrp.docbook_make_pars = false;
|
|
newrp.par_begin = 0;
|
|
newrp.par_end = text().paragraphs().size();
|
|
newrp.docbook_in_listing = true;
|
|
|
|
docbookParagraphs(text(), buffer(), xs, newrp);
|
|
|
|
// Done with the listing.
|
|
xs.endDivision();
|
|
xs << xml::EndTag(tag);
|
|
if (!isInline)
|
|
xs << xml::CR();
|
|
|
|
if (caption) {
|
|
xs << xml::EndTag("figure");
|
|
xs << xml::CR();
|
|
}
|
|
}
|
|
|
|
|
|
string InsetListings::contextMenuName() const
|
|
{
|
|
return "context-listings";
|
|
}
|
|
|
|
|
|
void InsetListings::doDispatch(Cursor & cur, FuncRequest & cmd)
|
|
{
|
|
switch (cmd.action()) {
|
|
|
|
case LFUN_INSET_MODIFY: {
|
|
cur.recordUndoInset(this);
|
|
InsetListings::string2params(to_utf8(cmd.argument()), params());
|
|
break;
|
|
}
|
|
|
|
case LFUN_INSET_DIALOG_UPDATE:
|
|
cur.bv().updateDialog("listings", params2string(params()));
|
|
break;
|
|
|
|
default:
|
|
InsetCaptionable::doDispatch(cur, cmd);
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
bool InsetListings::getStatus(Cursor & cur, FuncRequest const & cmd,
|
|
FuncStatus & status) const
|
|
{
|
|
switch (cmd.action()) {
|
|
case LFUN_INSET_MODIFY:
|
|
case LFUN_INSET_DIALOG_UPDATE:
|
|
status.setEnabled(true);
|
|
return true;
|
|
case LFUN_CAPTION_INSERT: {
|
|
// the inset outputs at most one caption
|
|
if (params().isInline() || getCaptionInset()) {
|
|
status.setEnabled(false);
|
|
return true;
|
|
}
|
|
}
|
|
// fall through
|
|
default:
|
|
return InsetCaptionable::getStatus(cur, cmd, status);
|
|
}
|
|
}
|
|
|
|
|
|
docstring const InsetListings::buttonLabel(BufferView const & bv) const
|
|
{
|
|
// FIXME UNICODE
|
|
docstring const locked = tempfile_ ? docstring(1, 0x1F512) : docstring();
|
|
if (decoration() == InsetDecoration::CLASSIC)
|
|
return locked + (isOpen(bv) ? _("Listing") : getNewLabel(_("Listing")));
|
|
return locked + getNewLabel(_("Listing"));
|
|
}
|
|
|
|
|
|
void InsetListings::validate(LaTeXFeatures & features) const
|
|
{
|
|
features.useInsetLayout(getLayout());
|
|
string param_string = params().params();
|
|
if (buffer().params().use_minted) {
|
|
features.require("minted");
|
|
OutputParams rp = features.runparams();
|
|
if (!params().isFloat() && !getCaption(rp).str.empty())
|
|
features.require("lyxmintcaption");
|
|
if (features.usePolyglossia() && features.hasRTLLanguage())
|
|
// minted loads color, but color must be loaded before bidi
|
|
// (i.e., polyglossia)
|
|
features.require("color");
|
|
} else {
|
|
features.require("listings");
|
|
if (contains(param_string, "\\color"))
|
|
features.require("color");
|
|
}
|
|
InsetCaptionable::validate(features);
|
|
}
|
|
|
|
|
|
bool InsetListings::showInsetDialog(BufferView * bv) const
|
|
{
|
|
bv->showDialog("listings", params2string(params()),
|
|
const_cast<InsetListings *>(this));
|
|
return true;
|
|
}
|
|
|
|
|
|
TexString InsetListings::getCaption(OutputParams const & runparams) const
|
|
{
|
|
InsetCaption const * ins = getCaptionInset();
|
|
if (ins == 0)
|
|
return TexString();
|
|
|
|
otexstringstream os;
|
|
ins->getArgs(os, runparams);
|
|
ins->getArgument(os, runparams);
|
|
|
|
// TODO: The code below should be moved to support, and then the test
|
|
// in ../tests should be moved there as well.
|
|
|
|
// the caption may contain \label{} but the listings
|
|
// package prefer caption={}, label={}
|
|
TexString cap = os.release();
|
|
if (buffer().params().use_minted
|
|
|| !contains(cap.str, from_ascii("\\label{")))
|
|
return cap;
|
|
// convert from
|
|
// blah1\label{blah2} blah3
|
|
// to
|
|
// blah1 blah3},label={blah2
|
|
// to form options
|
|
// caption={blah1 blah3},label={blah2}
|
|
//
|
|
// 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.
|
|
// 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;
|
|
}
|
|
|
|
|
|
void InsetListings::string2params(string const & in,
|
|
InsetListingsParams & params)
|
|
{
|
|
params = InsetListingsParams();
|
|
if (in.empty())
|
|
return;
|
|
istringstream data(in);
|
|
Lexer lex;
|
|
lex.setStream(data);
|
|
// discard "listings", which is only used to determine inset
|
|
lex.next();
|
|
params.read(lex);
|
|
}
|
|
|
|
|
|
string InsetListings::params2string(InsetListingsParams const & params)
|
|
{
|
|
ostringstream data;
|
|
data << "listings" << ' ';
|
|
params.write(data);
|
|
return data.str();
|
|
}
|
|
|
|
|
|
} // namespace lyx
|