mirror of
https://git.lyx.org/repos/lyx.git
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374 lines
11 KiB
C++
374 lines
11 KiB
C++
/**
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* \file LayoutFileList.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 Lars Gullik Bjønnes
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* \author John Levon
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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 "LayoutFile.h"
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#include "TextClass.h"
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#include "support/debug.h"
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#include "support/FileName.h"
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#include "support/filetools.h"
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#include "support/lassert.h"
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#include "support/Lexer.h"
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#include "support/TempFile.h"
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#include <fstream>
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#include <regex>
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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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LayoutFile::LayoutFile(string const & fn, string const & cln,
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string const & desc, string const & prereq,
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string const & category, bool texclassavail)
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{
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name_ = onlyFileName(fn);
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path_ = fn.rfind('/') == string::npos ? string() : onlyPath(fn);
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latexname_ = cln;
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description_ = desc;
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prerequisites_ = prereq;
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category_ = category;
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tex_class_avail_ = texclassavail;
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}
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LayoutFileList::~LayoutFileList()
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{
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ClassMap::const_iterator it = classmap_.begin();
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ClassMap::const_iterator en = classmap_.end();
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for (; it != en; ++it) {
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delete it->second;
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}
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}
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LayoutFileList & LayoutFileList::get()
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{
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static LayoutFileList baseclasslist;
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return baseclasslist;
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}
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bool LayoutFileList::haveClass(string const & classname) const
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{
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ClassMap::const_iterator it = classmap_.begin();
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ClassMap::const_iterator en = classmap_.end();
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for (; it != en; ++it) {
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if (it->first == classname)
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return true;
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}
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return false;
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}
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LayoutFile const & LayoutFileList::operator[](string const & classname) const
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{
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LATTEST(haveClass(classname));
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// safe to continue, since we will make an empty LayoutFile
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return *classmap_[classname];
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}
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LayoutFile & LayoutFileList::operator[](string const & classname)
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{
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LATTEST(haveClass(classname));
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// safe to continue, since we will make an empty LayoutFile
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return *classmap_[classname];
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}
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// Reads LyX textclass definitions according to textclass config file
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bool LayoutFileList::read()
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{
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bool success = false;
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Lexer lex;
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FileName const real_file = libFileSearch("", "textclass.lst");
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LYXERR(Debug::TCLASS, "Reading textclasses from `" << real_file << "'.");
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if (real_file.empty()) {
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LYXERR0("LayoutFileList::Read: unable to find textclass file "
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<< "`textclass.lst'.");
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} else if (!lex.setFile(real_file)) {
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LYXERR0("LayoutFileList::Read: lyxlex was not able to set file: "
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<< real_file << '.');
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} else if (!lex.isOK()) {
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LYXERR0("LayoutFileList::Read: unable to open textclass file `"
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<< makeDisplayPath(real_file.absFileName(), 1000)
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<< "'\nCheck your installation.");
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} else {
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// we have a file we can read.
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bool finished = false;
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LYXERR(Debug::TCLASS, "Starting parsing of textclass.lst");
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while (lex.isOK() && !finished) {
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LYXERR(Debug::TCLASS, "\tline by line");
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switch (lex.lex()) {
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case Lexer::LEX_FEOF:
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finished = true;
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break;
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default:
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string const fname = lex.getString();
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LYXERR(Debug::TCLASS, "Fname: " << fname);
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if (!lex.next())
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break;
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string const clname = lex.getString();
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LYXERR(Debug::TCLASS, "Clname: " << clname);
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if (!lex.next())
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break;
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string const desc = lex.getString();
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LYXERR(Debug::TCLASS, "Desc: " << desc);
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if (!lex.next())
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break;
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bool avail = lex.getBool();
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LYXERR(Debug::TCLASS, "Avail: " << avail);
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if (!lex.next())
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break;
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string const prereq = lex.getString();
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LYXERR(Debug::TCLASS, "Prereq: " << prereq);
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if (!lex.next())
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break;
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string const category = lex.getString();
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LYXERR(Debug::TCLASS, "Category: " << category);
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// This code is run when we have
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// fname, clname, desc, prereq, and avail
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LayoutFile * tmpl = new LayoutFile(fname, clname, desc, prereq, category, avail);
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if (lyxerr.debugging(Debug::TCLASS)) {
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// only system layout files are loaded here so no
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// buffer path is needed.
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tmpl->load();
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}
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classmap_[fname] = tmpl;
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} // end of switch
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} // end of while loop
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LYXERR(Debug::TCLASS, "End parsing of textclass.lst");
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success = true;
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} // end of else
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// LyX will start with an empty classmap_. This is OK because
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// (a) we will give the user a chance to reconfigure (see bug 2829) and
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// (b) even if that fails, we can use addEmptyClass() to get some basic
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// functionality.
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if (classmap_.empty())
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LYXERR0("LayoutFileList::Read: no textclasses found!");
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return success;
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}
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std::vector<LayoutFileIndex> LayoutFileList::classList() const
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{
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std::vector<LayoutFileIndex> cl;
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ClassMap::const_iterator it = classmap_.begin();
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ClassMap::const_iterator en = classmap_.end();
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for (; it != en; ++it)
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cl.push_back(it->first);
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return cl;
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}
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void LayoutFileList::reset(LayoutFileIndex const & classname)
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{
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LATTEST(haveClass(classname));
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// safe to continue, since we will make an empty LayoutFile
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LayoutFile * tc = classmap_[classname];
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LayoutFile * tmpl =
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new LayoutFile(tc->name(), tc->latexname(), tc->description(),
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tc->prerequisites(), tc->category(),
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tc->isTeXClassAvailable());
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classmap_[classname] = tmpl;
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delete tc;
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}
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namespace {
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string layoutpost =
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"Columns 1\n"
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"Sides 1\n"
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"SecNumDepth 2\n"
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"TocDepth 2\n"
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"DefaultStyle Standard\n\n"
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"Style Standard\n"
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" Category MainText\n"
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" Margin Static\n"
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" LatexType Paragraph\n"
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" LatexName dummy\n"
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" ParIndent MM\n"
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" ParSkip 0.4\n"
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" Align Block\n"
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" AlignPossible Block, Left, Right, Center\n"
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" LabelType No_Label\n"
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"End\n";
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}
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LayoutFileIndex LayoutFileList::addEmptyClass(string const & textclass)
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{
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// FIXME This could be simplified a bit to call TextClass::read(string, ReadType).
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TempFile tempfile("basicXXXXXX.layout");
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FileName const tempLayout = tempfile.name();
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ofstream ofs(tempLayout.toFilesystemEncoding().c_str());
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// This writes a very basic class, but it also attempts to include
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// stdclass.inc. That would give us something moderately usable.
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ofs << "# This layout is automatically generated\n"
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"# \\DeclareLaTeXClass{" << textclass << "}\n\n"
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"Format " << LAYOUT_FORMAT << "\n"
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"Input stdclass.inc\n\n"
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<< layoutpost;
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ofs.close();
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// We do not know if a LaTeX class is available for this document, but setting
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// the last parameter to true will suppress a warning message about missing
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// tex class.
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LayoutFile * tc = new LayoutFile(textclass, textclass,
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"Unknown text class " + textclass, textclass + ".cls", "", true);
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if (!tc->load(tempLayout.absFileName())) {
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// The only way this happens is because the hardcoded layout file
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// above is wrong or stdclass.inc cannot be found. So try again
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// without stdclass.inc and without stdinsets.inc.
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ofstream ofs2(tempLayout.toFilesystemEncoding().c_str());
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ofs2 << "# This layout is automatically generated\n"
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"# \\DeclareLaTeXClass{" << textclass << "}\n\n"
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"Format " << LAYOUT_FORMAT << "\n"
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"Provides stdinsets 1\n"
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<< layoutpost;
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ofs2.close();
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if (!tc->load(tempLayout.absFileName())) {
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// This can only happen if the hardcoded file above is wrong
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// or there is some weird filesystem error.
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LATTEST(false); // We will get an empty layout or something.
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}
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}
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classmap_[textclass] = tc;
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return textclass;
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}
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LayoutFileIndex LayoutFileList::addLocalLayout(
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string const & textclass, string const & path, string const & oldpath)
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{
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// FIXME There is a bug here: 4593
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//
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// only check for textclass.layout file, .cls can be anywhere in $TEXINPUTS
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// NOTE: latex class name is defined in textclass.layout, which can be
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// different from textclass
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string fullName = addName(path, textclass + ".layout");
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FileName layout_file(fullName);
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bool moved = false;
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if (!layout_file.exists()) {
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if (oldpath.empty())
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return string();
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// The document has been moved to a different directory.
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// However, oldpath always points to the right spot, unless
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// the user also moved the layout file.
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fullName = addName(oldpath, textclass + ".layout");
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layout_file.set(fullName);
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layout_file.refresh();
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if (!layout_file.exists())
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return string();
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moved = true;
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}
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LYXERR(Debug::TCLASS, "Adding class " << textclass << " from directory " << path);
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// Read .layout file and get description, real latex classname etc
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//
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// This is a C++ version of function processLayoutFile in configure.py,
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// which uses the following regex
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// \Declare(LaTeX|DocBook)Class\s*(\[([^,]*)(,.*)*\])*\s*{(.*)}
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ifstream ifs(layout_file.toFilesystemEncoding().c_str());
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static regex const reg("^\\s*#\\s*\\\\Declare(LaTeX|DocBook)Class\\s*"
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"(?:\\[([^,]*)(?:,.*)*\\])*\\s*\\{(.*)\\}\\s*");
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static regex const catreg("^\\s*#\\s*\\\\DeclareCategory\\{(.*)\\}\\s*");
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string line;
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string class_name;
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string class_prereq;
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string category;
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bool have_declaration = false;
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while (getline(ifs, line)) {
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// look for the \DeclareXXXClass line
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smatch sub;
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if (regex_match(line, sub, reg)) {
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// returns: whole string, classtype (not used here), class name, description
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// LASSERT: Why would this fail?
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LASSERT(sub.size() == 4, /**/);
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// now, create a TextClass with description containing path information
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class_name = (sub.str(2) == "" ? textclass : sub.str(2));
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class_prereq = class_name + ".cls";
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have_declaration = true;
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}
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else if (regex_match(line, sub, catreg)) {
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category = sub.str(1);
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}
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if (have_declaration && !category.empty())
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break;
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}
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if (!have_declaration)
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return string();
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LayoutFile * tmpl =
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new LayoutFile(addName(moved ? oldpath : path, textclass),
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class_name, textclass, class_prereq, category, true);
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//FIXME: The prerequisites are available from the layout file and
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// can be extracted from the above regex, but for now this
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// field is simply set to class_name + ".cls"
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// This textclass is added on request so it will definitely be
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// used. Load it now because other load() calls may fail if they
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// are called in a context without buffer path information.
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tmpl->load(moved ? oldpath : path);
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// There will be only one textclass with this name, even if different
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// layout files are loaded from different directories.
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if (haveClass(textclass)) {
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// Unconditionally issuing the warning may be confusing when
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// saving the document with a different name, as it is exactly
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// the same textclass that is being re-established.
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LYXERR(Debug::TCLASS, "Existing textclass " << textclass << " is redefined by " << fullName);
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delete classmap_[textclass];
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}
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classmap_[textclass] = tmpl;
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return removeExtension(fullName);
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}
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bool LayoutFileList::load(string const & name, string const & buf_path)
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{
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if (!haveClass(name)) {
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LYXERR0("Document class \"" << name << "\" does not exist.");
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return false;
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}
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LayoutFile * tc = classmap_[name];
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return tc->load(buf_path);
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}
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LayoutFileIndex defaultBaseclass()
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{
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if (LayoutFileList::get().haveClass("article"))
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return string("article");
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if (LayoutFileList::get().empty())
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// we'll call it that, since this gives the user a chance to
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// have a functioning document when things improve.
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return string("article");
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return LayoutFileList::get().classList().front();
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}
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} // namespace lyx
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