2 * \file InsetInclude.cpp
3 * This file is part of LyX, the document processor.
4 * Licence details can be found in the file COPYING.
6 * \author Lars Gullik Bjønnes
7 * \author Richard Heck (conversion to InsetCommand)
9 * Full author contact details are available in file CREDITS.
14 #include "InsetInclude.h"
17 #include "buffer_funcs.h"
18 #include "BufferList.h"
19 #include "BufferParams.h"
20 #include "BufferView.h"
22 #include "DispatchResult.h"
23 #include "ErrorList.h"
26 #include "FuncRequest.h"
27 #include "FuncStatus.h"
28 #include "LaTeXFeatures.h"
29 #include "LayoutFile.h"
30 #include "LayoutModuleList.h"
35 #include "MetricsInfo.h"
36 #include "OutputParams.h"
37 #include "TextClass.h"
38 #include "TocBackend.h"
40 #include "frontends/alert.h"
41 #include "frontends/Painter.h"
43 #include "graphics/PreviewImage.h"
44 #include "graphics/PreviewLoader.h"
46 #include "insets/InsetLabel.h"
47 #include "insets/InsetListingsParams.h"
48 #include "insets/RenderPreview.h"
50 #include "support/convert.h"
51 #include "support/debug.h"
52 #include "support/docstream.h"
53 #include "support/FileNameList.h"
54 #include "support/filetools.h"
55 #include "support/gettext.h"
56 #include "support/lassert.h"
57 #include "support/lstrings.h" // contains
58 #include "support/lyxalgo.h"
60 #include <boost/bind.hpp>
63 using namespace lyx::support;
67 namespace Alert = frontend::Alert;
72 docstring const uniqueID()
74 static unsigned int seed = 1000;
75 return "file" + convert<docstring>(++seed);
79 /// the type of inclusion
81 INCLUDE, VERB, INPUT, VERBAST, LISTINGS, NONE
85 Types type(string const & s)
89 if (s == "verbatiminput")
91 if (s == "verbatiminput*")
93 if (s == "lstinputlisting")
101 Types type(InsetCommandParams const & params)
103 return type(params.getCmdName());
107 bool isListings(InsetCommandParams const & params)
109 return type(params) == LISTINGS;
113 bool isVerbatim(InsetCommandParams const & params)
115 Types const t = type(params);
116 return t == VERB || t == VERBAST;
120 bool isInputOrInclude(InsetCommandParams const & params)
122 Types const t = type(params);
123 return t == INPUT || t == INCLUDE;
127 FileName const masterFileName(Buffer const & buffer)
129 return buffer.masterBuffer()->fileName();
133 void add_preview(RenderMonitoredPreview &, InsetInclude const &, Buffer const &);
136 string const parentFilename(Buffer const & buffer)
138 return buffer.absFileName();
142 FileName const includedFilename(Buffer const & buffer,
143 InsetCommandParams const & params)
145 return makeAbsPath(to_utf8(params["filename"]),
146 onlyPath(parentFilename(buffer)));
150 InsetLabel * createLabel(docstring const & label_str)
152 if (label_str.empty())
154 InsetCommandParams icp(LABEL_CODE);
155 icp["name"] = label_str;
156 return new InsetLabel(icp);
162 InsetInclude::InsetInclude(InsetCommandParams const & p)
163 : InsetCommand(p, "include"), include_label(uniqueID()),
164 preview_(new RenderMonitoredPreview(this)), failedtoload_(false),
165 set_label_(false), label_(0), child_buffer_(0)
167 preview_->fileChanged(boost::bind(&InsetInclude::fileChanged, this));
169 if (isListings(params())) {
170 InsetListingsParams listing_params(to_utf8(p["lstparams"]));
171 label_ = createLabel(from_utf8(listing_params.getParamValue("label")));
176 InsetInclude::InsetInclude(InsetInclude const & other)
177 : InsetCommand(other), include_label(other.include_label),
178 preview_(new RenderMonitoredPreview(this)), failedtoload_(false),
179 set_label_(false), label_(0), child_buffer_(0)
181 preview_->fileChanged(boost::bind(&InsetInclude::fileChanged, this));
184 label_ = new InsetLabel(*other.label_);
188 InsetInclude::~InsetInclude()
194 void InsetInclude::setBuffer(Buffer & buffer)
196 InsetCommand::setBuffer(buffer);
198 label_->setBuffer(buffer);
202 ParamInfo const & InsetInclude::findInfo(string const & /* cmdName */)
205 // This is only correct for the case of listings, but it'll do for now.
206 // In the other cases, this second parameter should just be empty.
207 static ParamInfo param_info_;
208 if (param_info_.empty()) {
209 param_info_.add("filename", ParamInfo::LATEX_REQUIRED);
210 param_info_.add("lstparams", ParamInfo::LATEX_OPTIONAL);
216 bool InsetInclude::isCompatibleCommand(string const & s)
218 return type(s) != NONE;
222 void InsetInclude::doDispatch(Cursor & cur, FuncRequest & cmd)
224 LASSERT(cur.buffer() == &buffer(), return);
225 switch (cmd.action) {
227 case LFUN_INSET_EDIT: {
228 editIncluded(to_utf8(params()["filename"]));
232 case LFUN_INSET_MODIFY: {
233 // It should be OK just to invalidate the cache is setParams()
235 // child_buffer_ = 0;
236 InsetCommandParams p(INCLUDE_CODE);
237 if (cmd.getArg(0) == "changetype") {
238 InsetCommand::doDispatch(cur, cmd);
241 InsetCommand::string2params("include", to_utf8(cmd.argument()), p);
242 if (!p.getCmdName().empty()) {
244 InsetListingsParams new_params(to_utf8(p["lstparams"]));
245 docstring const new_label =
246 from_utf8(new_params.getParamValue("label"));
248 if (new_label.empty()) {
254 old_label = label_->getParam("name");
256 label_ = createLabel(new_label);
257 label_->setBuffer(buffer());
260 if (new_label != old_label) {
261 label_->updateCommand(new_label);
262 // the label might have been adapted (duplicate)
263 if (new_label != label_->getParam("name")) {
264 new_params.addParam("label", "{" +
265 to_utf8(label_->getParam("name")) + "}", true);
266 p["lstparams"] = from_utf8(new_params.params());
277 //pass everything else up the chain
279 InsetCommand::doDispatch(cur, cmd);
285 void InsetInclude::editIncluded(string const & file)
287 string const ext = support::getExtension(file);
289 FuncRequest fr(LFUN_BUFFER_CHILD_OPEN, file);
292 // tex file or other text file in verbatim mode
293 formats.edit(buffer(),
294 support::makeAbsPath(file, support::onlyPath(buffer().absFileName())),
299 bool InsetInclude::getStatus(Cursor & cur, FuncRequest const & cmd,
300 FuncStatus & flag) const
303 switch (cmd.action) {
305 case LFUN_INSET_EDIT:
306 case LFUN_INSET_MODIFY:
307 flag.setEnabled(true);
311 return InsetCommand::getStatus(cur, cmd, flag);
316 void InsetInclude::setParams(InsetCommandParams const & p)
318 // invalidate the cache
321 InsetCommand::setParams(p);
324 if (preview_->monitoring())
325 preview_->stopMonitoring();
327 if (type(params()) == INPUT)
328 add_preview(*preview_, *this, buffer());
330 buffer().updateBibfilesCache();
334 docstring InsetInclude::screenLabel() const
338 switch (type(params())) {
340 temp = buffer().B_("Input");
343 temp = buffer().B_("Verbatim Input");
346 temp = buffer().B_("Verbatim Input*");
349 temp = buffer().B_("Include");
352 temp = listings_label_;
355 LASSERT(false, /**/);
360 if (params()["filename"].empty())
363 temp += from_utf8(onlyFilename(to_utf8(params()["filename"])));
369 Buffer * InsetInclude::getChildBuffer() const
371 Buffer * childBuffer = loadIfNeeded();
373 // FIXME: recursive includes
374 return (childBuffer == &buffer()) ? 0 : childBuffer;
378 Buffer * InsetInclude::loadIfNeeded() const
380 // Don't try to load it again if we failed before.
384 // Use cached Buffer if possible.
385 if (child_buffer_ != 0) {
386 if (theBufferList().isLoaded(child_buffer_))
387 return child_buffer_;
388 // Buffer vanished, so invalidate cache and try to reload.
392 InsetCommandParams const & p = params();
393 if (isVerbatim(p) || isListings(p))
396 string const parent_filename = buffer().absFileName();
397 FileName const included_file =
398 makeAbsPath(to_utf8(p["filename"]), onlyPath(parent_filename));
400 if (!isLyXFilename(included_file.absFilename()))
403 Buffer * child = theBufferList().getBuffer(included_file);
405 // the readonly flag can/will be wrong, not anymore I think.
406 if (!included_file.exists())
409 child = theBufferList().newBuffer(included_file.absFilename());
411 // Buffer creation is not possible.
414 if (!child->loadLyXFile(included_file)) {
415 failedtoload_ = true;
416 //close the buffer we just opened
417 theBufferList().release(child);
421 if (!child->errorList("Parse").empty()) {
422 // FIXME: Do something.
425 child->setParent(&buffer());
426 // Cache the child buffer.
427 child_buffer_ = child;
432 int InsetInclude::latex(odocstream & os, OutputParams const & runparams) const
434 string incfile = to_utf8(params()["filename"]);
436 // Do nothing if no file name has been specified
440 FileName const included_file = includedFilename(buffer(), params());
442 // Check we're not trying to include ourselves.
443 // FIXME RECURSIVE INCLUDE
444 // This isn't sufficient, as the inclusion could be downstream.
445 // But it'll have to do for now.
446 if (isInputOrInclude(params()) &&
447 buffer().absFileName() == included_file.absFilename())
449 Alert::error(_("Recursive input"),
450 bformat(_("Attempted to include file %1$s in itself! "
451 "Ignoring inclusion."), from_utf8(incfile)));
455 Buffer const * const masterBuffer = buffer().masterBuffer();
457 // if incfile is relative, make it relative to the master
459 if (!FileName(incfile).isAbsolute()) {
461 incfile = to_utf8(makeRelPath(from_utf8(included_file.absFilename()),
462 from_utf8(masterBuffer->filePath())));
465 // write it to a file (so far the complete file)
469 if (type(params()) == LISTINGS) {
470 exportfile = incfile;
471 mangled = DocFileName(included_file).mangledFilename();
473 exportfile = changeExtension(incfile, ".tex");
474 mangled = DocFileName(changeExtension(included_file.absFilename(), ".tex")).
478 FileName const writefile(makeAbsPath(mangled, masterBuffer->temppath()));
482 else if (!isValidLaTeXFilename(incfile)) {
483 frontend::Alert::warning(_("Invalid filename"),
484 _("The following filename is likely to cause trouble "
485 "when running the exported file through LaTeX: ") +
488 LYXERR(Debug::LATEX, "incfile:" << incfile);
489 LYXERR(Debug::LATEX, "exportfile:" << exportfile);
490 LYXERR(Debug::LATEX, "writefile:" << writefile);
492 if (runparams.inComment || runparams.dryrun) {
493 //Don't try to load or copy the file if we're
494 //in a comment or doing a dryrun
495 } else if (isInputOrInclude(params()) &&
496 isLyXFilename(included_file.absFilename())) {
497 //if it's a LyX file and we're inputting or including,
498 //try to load it so we can write the associated latex
502 Buffer * tmp = theBufferList().getBuffer(included_file);
504 if (tmp->params().baseClass() != masterBuffer->params().baseClass()) {
506 docstring text = bformat(_("Included file `%1$s'\n"
507 "has textclass `%2$s'\n"
508 "while parent file has textclass `%3$s'."),
509 included_file.displayName(),
510 from_utf8(tmp->params().documentClass().name()),
511 from_utf8(masterBuffer->params().documentClass().name()));
512 Alert::warning(_("Different textclasses"), text, true);
515 // Make sure modules used in child are all included in master
516 //FIXME It might be worth loading the children's modules into the master
517 //over in BufferParams rather than doing this check.
518 LayoutModuleList const masterModules = masterBuffer->params().getModules();
519 LayoutModuleList const childModules = tmp->params().getModules();
520 LayoutModuleList::const_iterator it = childModules.begin();
521 LayoutModuleList::const_iterator end = childModules.end();
522 for (; it != end; ++it) {
523 string const module = *it;
524 LayoutModuleList::const_iterator found =
525 find(masterModules.begin(), masterModules.end(), module);
526 if (found == masterModules.end()) {
527 docstring text = bformat(_("Included file `%1$s'\n"
528 "uses module `%2$s'\n"
529 "which is not used in parent file."),
530 included_file.displayName(), from_utf8(module));
531 Alert::warning(_("Module not found"), text);
535 tmp->markDepClean(masterBuffer->temppath());
537 // FIXME: handle non existing files
538 // FIXME: Second argument is irrelevant!
539 // since only_body is true, makeLaTeXFile will not look at second
540 // argument. Should we set it to string(), or should makeLaTeXFile
541 // make use of it somehow? (JMarc 20031002)
542 // The included file might be written in a different encoding
543 Encoding const * const oldEnc = runparams.encoding;
544 runparams.encoding = &tmp->params().encoding();
545 tmp->makeLaTeXFile(writefile,
546 masterFileName(buffer()).onlyPath().absFilename(),
548 runparams.encoding = oldEnc;
550 // In this case, it's not a LyX file, so we copy the file
551 // to the temp dir, so that .aux files etc. are not created
552 // in the original dir. Files included by this file will be
553 // found via input@path, see ../Buffer.cpp.
554 unsigned long const checksum_in = included_file.checksum();
555 unsigned long const checksum_out = writefile.checksum();
557 if (checksum_in != checksum_out) {
558 if (!included_file.copyTo(writefile)) {
561 to_utf8(bformat(_("Could not copy the file\n%1$s\n"
562 "into the temporary directory."),
563 from_utf8(included_file.absFilename()))));
569 string const tex_format = (runparams.flavor == OutputParams::LATEX) ?
570 "latex" : "pdflatex";
571 if (isVerbatim(params())) {
572 incfile = latex_path(incfile);
574 os << '\\' << from_ascii(params().getCmdName()) << '{'
575 << from_utf8(incfile) << '}';
576 } else if (type(params()) == INPUT) {
577 runparams.exportdata->addExternalFile(tex_format, writefile,
580 // \input wants file with extension (default is .tex)
581 if (!isLyXFilename(included_file.absFilename())) {
582 incfile = latex_path(incfile);
584 os << '\\' << from_ascii(params().getCmdName())
585 << '{' << from_utf8(incfile) << '}';
587 incfile = changeExtension(incfile, ".tex");
588 incfile = latex_path(incfile);
590 os << '\\' << from_ascii(params().getCmdName())
591 << '{' << from_utf8(incfile) << '}';
593 } else if (type(params()) == LISTINGS) {
594 os << '\\' << from_ascii(params().getCmdName());
595 string const opt = to_utf8(params()["lstparams"]);
596 // opt is set in QInclude dialog and should have passed validation.
597 InsetListingsParams params(opt);
598 if (!params.params().empty())
599 os << "[" << from_utf8(params.params()) << "]";
600 os << '{' << from_utf8(incfile) << '}';
602 runparams.exportdata->addExternalFile(tex_format, writefile,
605 // \include don't want extension and demands that the
606 // file really have .tex
607 incfile = changeExtension(incfile, string());
608 incfile = latex_path(incfile);
610 os << '\\' << from_ascii(params().getCmdName()) << '{'
611 << from_utf8(incfile) << '}';
618 int InsetInclude::plaintext(odocstream & os, OutputParams const &) const
620 if (isVerbatim(params()) || isListings(params())) {
621 os << '[' << screenLabel() << '\n';
622 // FIXME: We don't know the encoding of the file, default to UTF-8.
623 os << includedFilename(buffer(), params()).fileContents("UTF-8");
625 return PLAINTEXT_NEWLINE + 1; // one char on a separate line
627 docstring const str = '[' + screenLabel() + ']';
634 int InsetInclude::docbook(odocstream & os, OutputParams const & runparams) const
636 string incfile = to_utf8(params()["filename"]);
638 // Do nothing if no file name has been specified
642 string const included_file = includedFilename(buffer(), params()).absFilename();
644 // Check we're not trying to include ourselves.
645 // FIXME RECURSIVE INCLUDE
646 // This isn't sufficient, as the inclusion could be downstream.
647 // But it'll have to do for now.
648 if (buffer().absFileName() == included_file) {
649 Alert::error(_("Recursive input"),
650 bformat(_("Attempted to include file %1$s in itself! "
651 "Ignoring inclusion."), from_utf8(incfile)));
655 // write it to a file (so far the complete file)
656 string const exportfile = changeExtension(incfile, ".sgml");
657 DocFileName writefile(changeExtension(included_file, ".sgml"));
659 if (loadIfNeeded()) {
660 Buffer * tmp = theBufferList().getBuffer(FileName(included_file));
662 string const mangled = writefile.mangledFilename();
663 writefile = makeAbsPath(mangled,
664 buffer().masterBuffer()->temppath());
668 LYXERR(Debug::LATEX, "incfile:" << incfile);
669 LYXERR(Debug::LATEX, "exportfile:" << exportfile);
670 LYXERR(Debug::LATEX, "writefile:" << writefile);
672 tmp->makeDocBookFile(writefile, runparams, true);
675 runparams.exportdata->addExternalFile("docbook", writefile,
677 runparams.exportdata->addExternalFile("docbook-xml", writefile,
680 if (isVerbatim(params()) || isListings(params())) {
681 os << "<inlinegraphic fileref=\""
682 << '&' << include_label << ';'
683 << "\" format=\"linespecific\">";
685 os << '&' << include_label << ';';
691 void InsetInclude::validate(LaTeXFeatures & features) const
693 string incfile = to_utf8(params()["filename"]);
696 LASSERT(&buffer() == &features.buffer(), /**/);
698 string const included_file =
699 includedFilename(buffer(), params()).absFilename();
701 if (isLyXFilename(included_file))
702 writefile = changeExtension(included_file, ".sgml");
704 writefile = included_file;
706 if (!features.runparams().nice && !isVerbatim(params()) && !isListings(params())) {
707 incfile = DocFileName(writefile).mangledFilename();
708 writefile = makeAbsPath(incfile,
709 buffer().masterBuffer()->temppath()).absFilename();
712 features.includeFile(include_label, writefile);
714 if (isVerbatim(params()))
715 features.require("verbatim");
716 else if (isListings(params()))
717 features.require("listings");
719 // Here we must do the fun stuff...
720 // Load the file in the include if it needs
722 if (loadIfNeeded()) {
724 Buffer * const tmp = theBufferList().getBuffer(FileName(included_file));
725 // make sure the buffer isn't us
726 // FIXME RECURSIVE INCLUDES
727 // This is not sufficient, as recursive includes could be
728 // more than a file away. But it will do for now.
729 if (tmp && tmp != &buffer()) {
730 // We must temporarily change features.buffer,
731 // otherwise it would always be the master buffer,
732 // and nested includes would not work.
733 features.setBuffer(*tmp);
734 tmp->validate(features);
735 features.setBuffer(buffer());
741 void InsetInclude::fillWithBibKeys(BiblioInfo & keys,
742 InsetIterator const & /*di*/) const
744 if (loadIfNeeded()) {
745 string const included_file = includedFilename(buffer(), params()).absFilename();
746 Buffer * tmp = theBufferList().getBuffer(FileName(included_file));
747 BiblioInfo const & newkeys = tmp->localBibInfo();
748 keys.mergeBiblioInfo(newkeys);
753 void InsetInclude::updateBibfilesCache()
755 Buffer const * const child = getChildBuffer();
757 child->updateBibfilesCache(Buffer::UpdateChildOnly);
761 support::FileNameList const &
762 InsetInclude::getBibfilesCache() const
764 Buffer const * const child = getChildBuffer();
766 return child->getBibfilesCache(Buffer::UpdateChildOnly);
768 static support::FileNameList const empty;
773 void InsetInclude::metrics(MetricsInfo & mi, Dimension & dim) const
775 LASSERT(mi.base.bv, /**/);
777 bool use_preview = false;
778 if (RenderPreview::status() != LyXRC::PREVIEW_OFF) {
779 graphics::PreviewImage const * pimage =
780 preview_->getPreviewImage(mi.base.bv->buffer());
781 use_preview = pimage && pimage->image();
785 preview_->metrics(mi, dim);
789 button_.update(screenLabel(), true);
791 button_.metrics(mi, dim);
794 Box b(0, dim.wid, -dim.asc, dim.des);
799 void InsetInclude::draw(PainterInfo & pi, int x, int y) const
801 LASSERT(pi.base.bv, /**/);
803 bool use_preview = false;
804 if (RenderPreview::status() != LyXRC::PREVIEW_OFF) {
805 graphics::PreviewImage const * pimage =
806 preview_->getPreviewImage(pi.base.bv->buffer());
807 use_preview = pimage && pimage->image();
811 preview_->draw(pi, x, y);
813 button_.draw(pi, x, y);
817 docstring InsetInclude::contextMenu(BufferView const &, int, int) const
819 return from_ascii("context-include");
823 Inset::DisplayType InsetInclude::display() const
825 return type(params()) == INPUT ? Inline : AlignCenter;
834 void InsetInclude::fileChanged() const
836 Buffer const * const buffer = updateFrontend();
840 preview_->removePreview(*buffer);
841 add_preview(*preview_.get(), *this, *buffer);
842 preview_->startLoading(*buffer);
848 bool preview_wanted(InsetCommandParams const & params, Buffer const & buffer)
850 FileName const included_file = includedFilename(buffer, params);
852 return type(params) == INPUT && params.preview() &&
853 included_file.isReadableFile();
857 docstring latexString(InsetInclude const & inset)
860 // We don't need to set runparams.encoding since this will be done
861 // by latex() anyway.
862 OutputParams runparams(0);
863 runparams.flavor = OutputParams::LATEX;
864 inset.latex(os, runparams);
870 void add_preview(RenderMonitoredPreview & renderer, InsetInclude const & inset,
871 Buffer const & buffer)
873 InsetCommandParams const & params = inset.params();
874 if (RenderPreview::status() != LyXRC::PREVIEW_OFF &&
875 preview_wanted(params, buffer)) {
876 renderer.setAbsFile(includedFilename(buffer, params));
877 docstring const snippet = latexString(inset);
878 renderer.addPreview(snippet, buffer);
885 void InsetInclude::addPreview(graphics::PreviewLoader & ploader) const
887 Buffer const & buffer = ploader.buffer();
888 if (!preview_wanted(params(), buffer))
890 preview_->setAbsFile(includedFilename(buffer, params()));
891 docstring const snippet = latexString(*this);
892 preview_->addPreview(snippet, ploader);
896 void InsetInclude::addToToc(DocIterator const & cpit)
898 TocBackend & backend = buffer().tocBackend();
900 if (isListings(params())) {
902 label_->addToToc(cpit);
904 InsetListingsParams p(to_utf8(params()["lstparams"]));
905 string caption = p.getParamValue("caption");
908 Toc & toc = backend.toc("listing");
909 docstring str = convert<docstring>(toc.size() + 1)
910 + ". " + from_utf8(caption);
911 DocIterator pit = cpit;
912 toc.push_back(TocItem(pit, 0, str));
915 Buffer const * const childbuffer = getChildBuffer();
919 Toc & toc = backend.toc("child");
920 docstring str = childbuffer->fileName().displayName();
921 toc.push_back(TocItem(cpit, 0, str));
923 TocList & toclist = backend.tocs();
924 childbuffer->tocBackend().update();
925 TocList const & childtoclist = childbuffer->tocBackend().tocs();
926 TocList::const_iterator it = childtoclist.begin();
927 TocList::const_iterator const end = childtoclist.end();
928 for(; it != end; ++it)
929 toclist[it->first].insert(toclist[it->first].end(),
930 it->second.begin(), it->second.end());
934 void InsetInclude::updateCommand()
939 docstring old_label = label_->getParam("name");
940 label_->updateCommand(old_label, false);
941 // the label might have been adapted (duplicate)
942 docstring new_label = label_->getParam("name");
943 if (old_label == new_label)
946 // update listings parameters...
947 InsetCommandParams p(INCLUDE_CODE);
949 InsetListingsParams par(to_utf8(params()["lstparams"]));
950 par.addParam("label", "{" + to_utf8(new_label) + "}", true);
951 p["lstparams"] = from_utf8(par.params());
955 void InsetInclude::updateLabels(ParIterator const & it)
957 Buffer const * const childbuffer = getChildBuffer();
959 childbuffer->updateLabels(Buffer::UpdateChildOnly);
962 if (!isListings(params()))
966 label_->updateLabels(it);
968 InsetListingsParams const par(to_utf8(params()["lstparams"]));
969 if (par.getParamValue("caption").empty()) {
970 listings_label_ = buffer().B_("Program Listing");
973 Buffer const & master = *buffer().masterBuffer();
974 Counters & counters = master.params().documentClass().counters();
975 docstring const cnt = from_ascii("listing");
976 listings_label_ = master.B_("Program Listing");
977 if (counters.hasCounter(cnt)) {
979 listings_label_ += " " + convert<docstring>(counters.value(cnt));