mirror of
https://git.lyx.org/repos/lyx.git
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53274e31ec
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@5725 a592a061-630c-0410-9148-cb99ea01b6c8
910 lines
18 KiB
C
910 lines
18 KiB
C
/* This file is part of
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* ======================================================
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*
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* LyX, The Document Processor
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*
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* Copyright 1995 Matthias Ettrich
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* Copyright 1995-2001 The LyX Team.
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*
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* ======================================================
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*/
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#include <config.h>
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#ifdef __GNUG__
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#pragma implementation
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#endif
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#include "lyxtextclass.h"
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#include "debug.h"
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#include "lyxlex.h"
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#include "counters.h"
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#include "FloatList.h"
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#include "support/lstrings.h"
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#include "support/LAssert.h"
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#include "support/lyxfunctional.h"
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#include "support/filetools.h"
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#include <algorithm>
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using std::endl;
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using std::find_if;
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using std::remove_if;
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using std::ostream;
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namespace { // anon
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struct compare_name {
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compare_name(string const & name)
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: name_(name) {}
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template <class C>
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bool operator()(C & c) {
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return c->name() == name_;
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}
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string name_;
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};
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} // anon
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LyXTextClass::LyXTextClass(string const & fn, string const & cln,
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string const & desc)
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: name_(fn), latexname_(cln), description_(desc),
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floatlist_(new FloatList), ctrs_(new Counters)
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{
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outputType_ = LATEX;
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columns_ = 1;
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sides_ = OneSide;
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secnumdepth_ = 3;
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tocdepth_ = 3;
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pagestyle_ = "default";
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maxcounter_ = LABEL_COUNTER_CHAPTER;
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defaultfont_ = LyXFont(LyXFont::ALL_SANE);
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opt_fontsize_ = "10|11|12";
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opt_pagestyle_ = "empty|plain|headings|fancy";
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provides_ = nothing;
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loaded = false;
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}
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bool LyXTextClass::do_readStyle(LyXLex & lexrc, LyXLayout & lay)
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{
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lyxerr[Debug::TCLASS] << "Reading style " << lay.name() << endl;
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if (!lay.Read(lexrc, *this)) {
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// Resolve fonts
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lay.resfont = lay.font;
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lay.resfont.realize(defaultfont());
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lay.reslabelfont = lay.labelfont;
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lay.reslabelfont.realize(defaultfont());
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return false; // no errors
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}
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lyxerr << "Error parsing style `" << lay.name() << '\'' << endl;
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return true;
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}
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enum TextClassTags {
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TC_OUTPUTTYPE = 1,
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TC_INPUT,
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TC_STYLE,
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TC_DEFAULTSTYLE,
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TC_NOSTYLE,
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TC_COLUMNS,
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TC_SIDES,
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TC_PAGESTYLE,
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TC_DEFAULTFONT,
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TC_MAXCOUNTER,
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TC_SECNUMDEPTH,
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TC_TOCDEPTH,
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TC_CLASSOPTIONS,
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TC_PREAMBLE,
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TC_PROVIDESAMSMATH,
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TC_PROVIDESNATBIB,
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TC_PROVIDESMAKEIDX,
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TC_PROVIDESURL,
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TC_LEFTMARGIN,
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TC_RIGHTMARGIN,
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TC_FLOAT,
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TC_COUNTER,
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TC_NOFLOAT
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};
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// Reads a textclass structure from file.
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bool LyXTextClass::Read(string const & filename, bool merge)
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{
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keyword_item textClassTags[] = {
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{ "classoptions", TC_CLASSOPTIONS },
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{ "columns", TC_COLUMNS },
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{ "counter", TC_COUNTER },
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{ "defaultfont", TC_DEFAULTFONT },
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{ "defaultstyle", TC_DEFAULTSTYLE },
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{ "float", TC_FLOAT },
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{ "input", TC_INPUT },
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{ "leftmargin", TC_LEFTMARGIN },
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{ "maxcounter", TC_MAXCOUNTER },
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{ "nofloat", TC_NOFLOAT },
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{ "nostyle", TC_NOSTYLE },
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{ "outputtype", TC_OUTPUTTYPE },
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{ "pagestyle", TC_PAGESTYLE },
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{ "preamble", TC_PREAMBLE },
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{ "providesamsmath", TC_PROVIDESAMSMATH },
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{ "providesmakeidx", TC_PROVIDESMAKEIDX },
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{ "providesnatbib", TC_PROVIDESNATBIB },
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{ "providesurl", TC_PROVIDESURL },
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{ "rightmargin", TC_RIGHTMARGIN },
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{ "secnumdepth", TC_SECNUMDEPTH },
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{ "sides", TC_SIDES },
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{ "style", TC_STYLE },
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{ "tocdepth", TC_TOCDEPTH }
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};
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if (!merge)
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lyxerr[Debug::TCLASS] << "Reading textclass "
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<< MakeDisplayPath(filename)
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<< endl;
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else
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lyxerr[Debug::TCLASS] << "Reading input file "
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<< MakeDisplayPath(filename)
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<< endl;
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LyXLex lexrc(textClassTags, TC_NOFLOAT);
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bool error = false;
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lexrc.setFile(filename);
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if (!lexrc.isOK()) error = true;
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// parsing
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while (lexrc.isOK() && !error) {
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int le = lexrc.lex();
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switch (le) {
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case LyXLex::LEX_FEOF:
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continue;
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case LyXLex::LEX_UNDEF:
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lexrc.printError("Unknown TextClass tag `$$Token'");
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error = true;
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continue;
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default: break;
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}
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switch (static_cast<TextClassTags>(le)) {
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case TC_OUTPUTTYPE: // output type definition
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readOutputType(lexrc);
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break;
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case TC_INPUT: // Include file
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if (lexrc.next()) {
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string tmp = LibFileSearch("layouts",
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lexrc.getString(),
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"layout");
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if (Read(tmp, true)) {
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lexrc.printError("Error reading input"
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"file: "+tmp);
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error = true;
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}
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}
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break;
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case TC_DEFAULTSTYLE:
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if (lexrc.next()) {
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string const name = subst(lexrc.getString(),
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'_', ' ');
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defaultlayout_ = name;
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}
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break;
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case TC_STYLE:
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if (lexrc.next()) {
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string const name = subst(lexrc.getString(),
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'_', ' ');
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if (hasLayout(name)) {
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LyXLayout * lay =
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operator[](name).get();
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error = do_readStyle(lexrc, *lay);
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} else {
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LyXLayout lay;
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lay.setName(name);
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if (!(error = do_readStyle(lexrc, lay)))
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layoutlist_.push_back(boost::shared_ptr<LyXLayout>(new LyXLayout(lay)));
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if (defaultlayout_.empty()) {
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// We do not have a default
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// layout yet, so we choose
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// the first layout we
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// encounter.
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defaultlayout_ = name;
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}
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}
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}
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else {
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lexrc.printError("No name given for style: `$$Token'.");
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error = true;
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}
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break;
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case TC_NOSTYLE:
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if (lexrc.next()) {
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string const style = subst(lexrc.getString(),
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'_', ' ');
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if (!delete_layout(style))
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lyxerr << "Cannot delete style `"
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<< style << '\'' << endl;
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// lexrc.printError("Cannot delete style"
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// " `$$Token'");
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}
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break;
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case TC_COLUMNS:
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if (lexrc.next())
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columns_ = lexrc.getInteger();
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break;
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case TC_SIDES:
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if (lexrc.next()) {
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switch (lexrc.getInteger()) {
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case 1: sides_ = OneSide; break;
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case 2: sides_ = TwoSides; break;
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default:
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lyxerr << "Impossible number of page"
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" sides, setting to one."
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<< endl;
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sides_ = OneSide;
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break;
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}
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}
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break;
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case TC_PAGESTYLE:
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lexrc.next();
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pagestyle_ = rtrim(lexrc.getString());
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break;
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case TC_DEFAULTFONT:
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defaultfont_.lyxRead(lexrc);
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if (!defaultfont_.resolved()) {
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lexrc.printError("Warning: defaultfont should "
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"be fully instantiated!");
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defaultfont_.realize(LyXFont(LyXFont::ALL_SANE));
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}
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break;
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case TC_MAXCOUNTER:
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readMaxCounter(lexrc);
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break;
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case TC_SECNUMDEPTH:
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lexrc.next();
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secnumdepth_ = lexrc.getInteger();
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break;
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case TC_TOCDEPTH:
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lexrc.next();
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tocdepth_ = lexrc.getInteger();
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break;
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// First step to support options
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case TC_CLASSOPTIONS:
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readClassOptions(lexrc);
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break;
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case TC_PREAMBLE:
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preamble_ = lexrc.getLongString("EndPreamble");
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break;
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case TC_PROVIDESAMSMATH:
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if (lexrc.next() && lexrc.getInteger())
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provides_ |= amsmath;
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break;
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case TC_PROVIDESNATBIB:
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if (lexrc.next() && lexrc.getInteger())
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provides_ |= natbib;
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break;
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case TC_PROVIDESMAKEIDX:
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if (lexrc.next() && lexrc.getInteger())
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provides_ |= makeidx;
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break;
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case TC_PROVIDESURL:
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if (lexrc.next() && lexrc.getInteger())
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provides_ |= url;
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break;
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case TC_LEFTMARGIN: // left margin type
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if (lexrc.next())
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leftmargin_ = lexrc.getString();
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break;
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case TC_RIGHTMARGIN: // right margin type
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if (lexrc.next())
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rightmargin_ = lexrc.getString();
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break;
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case TC_FLOAT:
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readFloat(lexrc);
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break;
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case TC_COUNTER:
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readCounter(lexrc);
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break;
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case TC_NOFLOAT:
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if (lexrc.next()) {
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string const nofloat = lexrc.getString();
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floatlist_->erase(nofloat);
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}
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break;
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}
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}
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if (!merge) { // we are at top level here.
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lyxerr[Debug::TCLASS] << "Finished reading textclass "
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<< MakeDisplayPath(filename)
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<< endl;
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if (defaultlayout_.empty()) {
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lyxerr << "Error: Textclass '" << name_
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<< "' is missing a defaultstyle." << endl;
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error = true;
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}
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} else
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lyxerr[Debug::TCLASS] << "Finished reading input file "
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<< MakeDisplayPath(filename)
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<< endl;
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return error;
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}
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void LyXTextClass::readOutputType(LyXLex & lexrc)
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{
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keyword_item outputTypeTags[] = {
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{ "docbook", DOCBOOK },
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{ "latex", LATEX },
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{ "linuxdoc", LINUXDOC },
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{ "literate", LITERATE }
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};
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pushpophelper pph(lexrc, outputTypeTags, LITERATE);
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int le = lexrc.lex();
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switch (le) {
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case LyXLex::LEX_UNDEF:
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lexrc.printError("Unknown output type `$$Token'");
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return;
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case LATEX:
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case LINUXDOC:
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case DOCBOOK:
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case LITERATE:
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outputType_ = static_cast<OutputType>(le);
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break;
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default:
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lyxerr << "Unhandled value " << le
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<< " in LyXTextClass::readOutputType." << endl;
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break;
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}
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}
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enum MaxCounterTags {
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MC_COUNTER_CHAPTER = 1,
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MC_COUNTER_SECTION,
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MC_COUNTER_SUBSECTION,
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MC_COUNTER_SUBSUBSECTION,
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MC_COUNTER_PARAGRAPH,
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MC_COUNTER_SUBPARAGRAPH,
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MC_COUNTER_ENUMI,
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MC_COUNTER_ENUMII,
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MC_COUNTER_ENUMIII,
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MC_COUNTER_ENUMIV
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};
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void LyXTextClass::readMaxCounter(LyXLex & lexrc)
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{
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keyword_item maxCounterTags[] = {
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{"counter_chapter", MC_COUNTER_CHAPTER },
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{"counter_enumi", MC_COUNTER_ENUMI },
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{"counter_enumii", MC_COUNTER_ENUMII },
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{"counter_enumiii", MC_COUNTER_ENUMIII },
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{"counter_enumiv", MC_COUNTER_ENUMIV },
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{"counter_paragraph", MC_COUNTER_PARAGRAPH },
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{"counter_section", MC_COUNTER_SECTION },
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{"counter_subparagraph", MC_COUNTER_SUBPARAGRAPH },
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{"counter_subsection", MC_COUNTER_SUBSECTION },
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{"counter_subsubsection", MC_COUNTER_SUBSUBSECTION }
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};
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pushpophelper pph(lexrc, maxCounterTags, MC_COUNTER_ENUMIV);
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int le = lexrc.lex();
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switch (le) {
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case LyXLex::LEX_UNDEF:
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lexrc.printError("Unknown MaxCounter tag `$$Token'");
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return;
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default: break;
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}
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switch (static_cast<MaxCounterTags>(le)) {
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case MC_COUNTER_CHAPTER:
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maxcounter_ = LABEL_COUNTER_CHAPTER;
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break;
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case MC_COUNTER_SECTION:
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maxcounter_ = LABEL_COUNTER_SECTION;
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break;
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case MC_COUNTER_SUBSECTION:
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maxcounter_ = LABEL_COUNTER_SUBSECTION;
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break;
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case MC_COUNTER_SUBSUBSECTION:
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maxcounter_ = LABEL_COUNTER_SUBSUBSECTION;
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break;
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case MC_COUNTER_PARAGRAPH:
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maxcounter_ = LABEL_COUNTER_PARAGRAPH;
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break;
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case MC_COUNTER_SUBPARAGRAPH:
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maxcounter_ = LABEL_COUNTER_SUBPARAGRAPH;
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break;
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case MC_COUNTER_ENUMI:
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maxcounter_ = LABEL_COUNTER_ENUMI;
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break;
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case MC_COUNTER_ENUMII:
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maxcounter_ = LABEL_COUNTER_ENUMII;
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break;
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case MC_COUNTER_ENUMIII:
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maxcounter_ = LABEL_COUNTER_ENUMIII;
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break;
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case MC_COUNTER_ENUMIV:
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maxcounter_ = LABEL_COUNTER_ENUMIV;
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break;
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}
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}
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enum ClassOptionsTags {
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CO_FONTSIZE = 1,
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CO_PAGESTYLE,
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CO_OTHER,
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CO_END
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};
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void LyXTextClass::readClassOptions(LyXLex & lexrc)
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{
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keyword_item classOptionsTags[] = {
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{"end", CO_END },
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{"fontsize", CO_FONTSIZE },
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{"other", CO_OTHER },
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{"pagestyle", CO_PAGESTYLE }
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};
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lexrc.pushTable(classOptionsTags, CO_END);
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bool getout = false;
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while (!getout && lexrc.isOK()) {
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int le = lexrc.lex();
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switch (le) {
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case LyXLex::LEX_UNDEF:
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lexrc.printError("Unknown ClassOption tag `$$Token'");
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continue;
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default: break;
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}
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switch (static_cast<ClassOptionsTags>(le)) {
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case CO_FONTSIZE:
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lexrc.next();
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opt_fontsize_ = rtrim(lexrc.getString());
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break;
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case CO_PAGESTYLE:
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lexrc.next();
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opt_pagestyle_ = rtrim(lexrc.getString());
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break;
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case CO_OTHER:
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lexrc.next();
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options_ = lexrc.getString();
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break;
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case CO_END:
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getout = true;
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break;
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}
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}
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lexrc.popTable();
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}
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enum FloatTags {
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FT_TYPE = 1,
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FT_NAME,
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FT_PLACEMENT,
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FT_EXT,
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FT_WITHIN,
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FT_STYLE,
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FT_LISTNAME,
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FT_BUILTIN,
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FT_END
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};
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void LyXTextClass::readFloat(LyXLex & lexrc)
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{
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keyword_item floatTags[] = {
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{ "end", FT_END },
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{ "extension", FT_EXT },
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{ "guiname", FT_NAME },
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{ "latexbuiltin", FT_BUILTIN },
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{ "listname", FT_LISTNAME },
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{ "numberwithin", FT_WITHIN },
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{ "placement", FT_PLACEMENT },
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{ "style", FT_STYLE },
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{ "type", FT_TYPE }
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};
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lexrc.pushTable(floatTags, FT_END);
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string type;
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string placement;
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string ext;
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string within;
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string style;
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string name;
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string listname;
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bool builtin = false;
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bool getout = false;
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while (!getout && lexrc.isOK()) {
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int le = lexrc.lex();
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switch (le) {
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case LyXLex::LEX_UNDEF:
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lexrc.printError("Unknown ClassOption tag `$$Token'");
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continue;
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default: break;
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}
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switch (static_cast<FloatTags>(le)) {
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case FT_TYPE:
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lexrc.next();
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type = lexrc.getString();
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// Here we could check if this type is already defined
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// and modify it with the rest of the vars instead.
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break;
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case FT_NAME:
|
|
lexrc.next();
|
|
name = lexrc.getString();
|
|
break;
|
|
case FT_PLACEMENT:
|
|
lexrc.next();
|
|
placement = lexrc.getString();
|
|
break;
|
|
case FT_EXT:
|
|
lexrc.next();
|
|
ext = lexrc.getString();
|
|
break;
|
|
case FT_WITHIN:
|
|
lexrc.next();
|
|
within = lexrc.getString();
|
|
if (within == "none")
|
|
within.erase();
|
|
break;
|
|
case FT_STYLE:
|
|
lexrc.next();
|
|
style = lexrc.getString();
|
|
break;
|
|
case FT_LISTNAME:
|
|
lexrc.next();
|
|
listname = lexrc.getString();
|
|
break;
|
|
case FT_BUILTIN:
|
|
lexrc.next();
|
|
builtin = lexrc.getBool();
|
|
break;
|
|
case FT_END:
|
|
getout = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
// Here if have a full float if getout == true
|
|
if (getout) {
|
|
Floating newfloat(type, placement, ext, within,
|
|
style, name, listname, builtin);
|
|
floatlist_->newFloat(newfloat);
|
|
}
|
|
|
|
lexrc.popTable();
|
|
}
|
|
|
|
|
|
enum CounterTags {
|
|
CT_NAME = 1,
|
|
CT_WITHIN,
|
|
CT_END
|
|
};
|
|
|
|
void LyXTextClass::readCounter(LyXLex & lexrc)
|
|
{
|
|
keyword_item counterTags[] = {
|
|
{ "end", CT_END },
|
|
{ "name", CT_NAME },
|
|
{ "within", CT_WITHIN }
|
|
};
|
|
|
|
lexrc.pushTable(counterTags, CT_END);
|
|
|
|
string name;
|
|
string within;
|
|
|
|
bool getout = false;
|
|
while (!getout && lexrc.isOK()) {
|
|
int le = lexrc.lex();
|
|
switch (le) {
|
|
case LyXLex::LEX_UNDEF:
|
|
lexrc.printError("Unknown ClassOption tag `$$Token'");
|
|
continue;
|
|
default: break;
|
|
}
|
|
switch (static_cast<CounterTags>(le)) {
|
|
case CT_NAME:
|
|
lexrc.next();
|
|
name = lexrc.getString();
|
|
break;
|
|
case CT_WITHIN:
|
|
lexrc.next();
|
|
within = lexrc.getString();
|
|
if (within == "none")
|
|
within.erase();
|
|
break;
|
|
case CT_END:
|
|
getout = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
// Here if have a full float if getout == true
|
|
if (getout) {
|
|
if (within.empty()) {
|
|
ctrs_->newCounter(name);
|
|
} else {
|
|
ctrs_->newCounter(name, within);
|
|
}
|
|
}
|
|
|
|
lexrc.popTable();
|
|
}
|
|
|
|
|
|
LyXFont const & LyXTextClass::defaultfont() const
|
|
{
|
|
return defaultfont_;
|
|
}
|
|
|
|
|
|
string const & LyXTextClass::leftmargin() const
|
|
{
|
|
return leftmargin_;
|
|
}
|
|
|
|
|
|
string const & LyXTextClass::rightmargin() const
|
|
{
|
|
return rightmargin_;
|
|
}
|
|
|
|
|
|
bool LyXTextClass::hasLayout(string const & n) const
|
|
{
|
|
string const name = (n.empty() ? defaultLayoutName() : n);
|
|
|
|
return find_if(layoutlist_.begin(), layoutlist_.end(),
|
|
compare_name(name))
|
|
!= layoutlist_.end();
|
|
}
|
|
|
|
|
|
LyXLayout_ptr const & LyXTextClass::operator[](string const & n) const
|
|
{
|
|
lyx::Assert(!n.empty());
|
|
|
|
if (n.empty())
|
|
lyxerr << "Operator[] called with empty n" << endl;
|
|
|
|
string const name = (n.empty() ? defaultLayoutName() : n);
|
|
|
|
static string lastLayoutName;
|
|
static LayoutList::difference_type lastLayoutIndex;
|
|
|
|
if (name == lastLayoutName)
|
|
return layoutlist_[lastLayoutIndex];
|
|
|
|
LayoutList::const_iterator cit =
|
|
find_if(layoutlist_.begin(),
|
|
layoutlist_.end(),
|
|
compare_name(name));
|
|
|
|
if (cit == layoutlist_.end()) {
|
|
lyxerr << "We failed to find the layout '" << name
|
|
<< "' in the layout list. You MUST investigate!"
|
|
<< endl;
|
|
|
|
// we require the name to exist
|
|
lyx::Assert(false);
|
|
}
|
|
|
|
lastLayoutName = name;
|
|
lastLayoutIndex = std::distance(layoutlist_.begin(), cit);
|
|
|
|
return (*cit);
|
|
}
|
|
|
|
|
|
bool LyXTextClass::delete_layout(string const & name)
|
|
{
|
|
if (name == defaultLayoutName())
|
|
return false;
|
|
|
|
LayoutList::iterator it =
|
|
remove_if(layoutlist_.begin(), layoutlist_.end(),
|
|
compare_name(name));
|
|
|
|
LayoutList::iterator end = layoutlist_.end();
|
|
bool const ret = (it != end);
|
|
layoutlist_.erase(it, end);
|
|
return ret;
|
|
}
|
|
|
|
|
|
// Load textclass info if not loaded yet
|
|
bool LyXTextClass::load() const
|
|
{
|
|
if (loaded)
|
|
return true;
|
|
|
|
// Read style-file
|
|
string const real_file = LibFileSearch("layouts", name_, "layout");
|
|
|
|
if (const_cast<LyXTextClass*>(this)->Read(real_file)) {
|
|
lyxerr << "Error reading `"
|
|
<< MakeDisplayPath(real_file)
|
|
<< "'\n(Check `" << name_
|
|
<< "')\nCheck your installation and "
|
|
"try Options/Reconfigure..." << endl;
|
|
loaded = false;
|
|
}
|
|
loaded = true;
|
|
return loaded;
|
|
}
|
|
|
|
|
|
FloatList & LyXTextClass::floats()
|
|
{
|
|
return *floatlist_.get();
|
|
}
|
|
|
|
|
|
FloatList const & LyXTextClass::floats() const
|
|
{
|
|
return *floatlist_.get();
|
|
}
|
|
|
|
|
|
Counters & LyXTextClass::counters() const
|
|
{
|
|
return *ctrs_.get();
|
|
}
|
|
|
|
|
|
string const & LyXTextClass::defaultLayoutName() const
|
|
{
|
|
// This really should come from the actual layout... (Lgb)
|
|
return defaultlayout_;
|
|
}
|
|
|
|
|
|
LyXLayout_ptr const & LyXTextClass::defaultLayout() const
|
|
{
|
|
return operator[](defaultLayoutName());
|
|
}
|
|
|
|
|
|
string const & LyXTextClass::name() const
|
|
{
|
|
return name_;
|
|
}
|
|
|
|
|
|
string const & LyXTextClass::latexname() const
|
|
{
|
|
const_cast<LyXTextClass*>(this)->load();
|
|
return latexname_;
|
|
}
|
|
|
|
|
|
string const & LyXTextClass::description() const
|
|
{
|
|
return description_;
|
|
}
|
|
|
|
|
|
string const & LyXTextClass::opt_fontsize() const
|
|
{
|
|
return opt_fontsize_;
|
|
}
|
|
|
|
|
|
string const & LyXTextClass::opt_pagestyle() const
|
|
{
|
|
return opt_pagestyle_;
|
|
}
|
|
|
|
|
|
string const & LyXTextClass::options() const
|
|
{
|
|
return options_;
|
|
}
|
|
|
|
|
|
string const & LyXTextClass::pagestyle() const
|
|
{
|
|
return pagestyle_;
|
|
}
|
|
|
|
|
|
string const & LyXTextClass::preamble() const
|
|
{
|
|
return preamble_;
|
|
}
|
|
|
|
|
|
LyXTextClass::PageSides LyXTextClass::sides() const
|
|
{
|
|
return sides_;
|
|
}
|
|
|
|
|
|
int LyXTextClass::secnumdepth() const
|
|
{
|
|
return secnumdepth_;
|
|
}
|
|
|
|
|
|
int LyXTextClass::tocdepth() const
|
|
{
|
|
return tocdepth_;
|
|
}
|
|
|
|
|
|
OutputType LyXTextClass::outputType() const
|
|
{
|
|
return outputType_;
|
|
}
|
|
|
|
|
|
bool LyXTextClass::provides(LyXTextClass::Provides p) const
|
|
{
|
|
return provides_ & p;
|
|
}
|
|
|
|
|
|
unsigned int LyXTextClass::columns() const
|
|
{
|
|
return columns_;
|
|
}
|
|
|
|
|
|
int LyXTextClass::maxcounter() const
|
|
{
|
|
return maxcounter_;
|
|
}
|
|
|
|
|
|
int LyXTextClass::size() const
|
|
{
|
|
return layoutlist_.size();
|
|
}
|
|
|
|
|
|
ostream & operator<<(ostream & os, LyXTextClass::PageSides p)
|
|
{
|
|
switch (p) {
|
|
case LyXTextClass::OneSide:
|
|
os << '1';
|
|
break;
|
|
case LyXTextClass::TwoSides:
|
|
os << '2';
|
|
break;
|
|
}
|
|
return os;
|
|
}
|