src/tex2lyx/Context.cpp

   1 /**
   2  * \file Context.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Jean-Marc Lasgouttes
   7  *
   8  * Full author contact details are available in file CREDITS.
   9  */
  10
  11 #include <config.h>
  12
  13 #include "Context.h"
  14 #include "Layout.h"
  15
  16 #include "support/lstrings.h"
  17
  18 #include <iostream>
  19
  20 using namespace std;
  21 using namespace lyx::support;
  22
  23 namespace lyx {
  24
  25 namespace {
  26
  27 void end_layout(ostream & os)
  28 {
  29         os << "\n\\end_layout\n";
  30 }
  31
  32
  33 void begin_deeper(ostream & os)
  34 {
  35         os << "\n\\begin_deeper";
  36 }
  37
  38
  39 void end_deeper(ostream & os)
  40 {
  41         os << "\n\\end_deeper";
  42 }
  43
  44 }
  45
  46
  47 bool operator==(TeXFont const & f1, TeXFont const & f2)
  48 {
  49         return
  50                 f1.size == f2.size &&
  51                 f1.family == f2.family &&
  52                 f1.series == f2.series &&
  53                 f1.shape == f2.shape;
  54 }
  55
  56
  57 void output_font_change(ostream & os, TeXFont const & oldfont,
  58                         TeXFont const & newfont)
  59 {
  60         if (oldfont.family != newfont.family)
  61                 os << "\n\\family " << newfont.family << '\n';
  62         if (oldfont.series != newfont.series)
  63                 os << "\n\\series " << newfont.series << '\n';
  64         if (oldfont.shape != newfont.shape)
  65                 os << "\n\\shape " << newfont.shape << '\n';
  66         if (oldfont.size != newfont.size)
  67                 os << "\n\\size " << newfont.size << '\n';
  68 }
  69
  70
  71 TeXFont Context::normalfont;
  72 bool Context::empty = true;
  73
  74
  75 Context::Context(bool need_layout_,
  76                  TeX2LyXDocClass const & textclass_,
  77                  Layout const * layout_, Layout const * parent_layout_,
  78                  TeXFont font_)
  79         : need_layout(need_layout_),
  80           need_end_layout(false), need_end_deeper(false),
  81           has_item(false), deeper_paragraph(false),
  82           new_layout_allowed(true), textclass(textclass_),
  83           layout(layout_), parent_layout(parent_layout_),
  84           font(font_)
  85 {
  86         if (!layout)
  87                 layout = &textclass.defaultLayout();
  88         if (!parent_layout)
  89                 parent_layout = &textclass.defaultLayout();
  90 }
  91
  92
  93 Context::~Context()
  94 {
  95         if (!par_extra_stuff.empty())
  96                 cerr << "Bug: Ignoring par-level extra stuff '"
  97                      << par_extra_stuff << '\'' << endl;
  98 }
  99
 100
 101 void Context::begin_layout(ostream & os, Layout const * const & l)
 102 {
 103         os << "\n\\begin_layout " << to_utf8(l->name()) << "\n";
 104         if (!extra_stuff.empty()) {
 105                 os << extra_stuff;
 106         }
 107         if (!par_extra_stuff.empty()) {
 108                 os << par_extra_stuff;
 109                 par_extra_stuff.erase();
 110         }
 111         // FIXME: This is not enough for things like
 112         // \\Huge par1 \\par par2
 113         output_font_change(os, normalfont, font);
 114 }
 115
 116
 117 void Context::check_layout(ostream & os)
 118 {
 119         if (need_layout) {
 120                 check_end_layout(os);
 121
 122                 // are we in a list-like environment?
 123                 if (layout->isEnvironment()
 124                     && layout->latextype != LATEX_ENVIRONMENT) {
 125                         // A list-like environment
 126                         if (has_item) {
 127                                 // a new item. If we had a standard
 128                                 // paragraph before, we have to end it.
 129                                 if (deeper_paragraph) {
 130                                         end_deeper(os);
 131                                         deeper_paragraph = false;
 132                                 }
 133                                 begin_layout(os, layout);
 134                                 has_item = false;
 135                         } else {
 136                                 // a standard paragraph in an
 137                                 // enumeration. We have to recognize
 138                                 // that this may require a begin_deeper.
 139                                 if (!deeper_paragraph)
 140                                         begin_deeper(os);
 141                                 begin_layout(os, &textclass.defaultLayout());
 142                                 deeper_paragraph = true;
 143                         }
 144                 } else {
 145                         // No list-like environment
 146                         begin_layout(os, layout);
 147                 }
 148                 need_layout = false;
 149                 need_end_layout = true;
 150                 os << "\n";
 151                 empty = false;
 152         }
 153 }
 154
 155
 156 void Context::check_end_layout(ostream & os)
 157 {
 158         if (need_end_layout) {
 159                 end_layout(os);
 160                 need_end_layout = false;
 161         }
 162 }
 163
 164
 165 void Context::check_deeper(ostream & os)
 166 {
 167         if (parent_layout->isEnvironment()) {
 168                 // We start a nested environment.
 169                 // We need to increase the depth.
 170                 if (need_end_deeper) {
 171                         // no need to have \end_deeper \begin_deeper
 172                         need_end_deeper = false;
 173                 } else {
 174                         begin_deeper(os);
 175                         need_end_deeper = true;
 176                 }
 177         } else
 178                 check_end_deeper(os);
 179 }
 180
 181
 182 void Context::check_end_deeper(ostream & os)
 183 {
 184         if (need_end_deeper) {
 185                 end_deeper(os);
 186                 need_end_deeper = false;
 187         }
 188         if (deeper_paragraph) {
 189                 end_deeper(os);
 190                 deeper_paragraph = false;
 191         }
 192 }
 193
 194
 195 void Context::set_item()
 196 {
 197         need_layout = true;
 198         has_item = true;
 199 }
 200
 201
 202 void Context::new_paragraph(ostream & os)
 203 {
 204         check_end_layout(os);
 205         need_layout = true;
 206 }
 207
 208
 209 void Context::add_extra_stuff(string const & stuff)
 210 {
 211         if (!contains(extra_stuff, stuff))
 212                 extra_stuff += stuff;
 213 }
 214
 215
 216 void Context::add_par_extra_stuff(string const & stuff)
 217 {
 218         if (!contains(par_extra_stuff, stuff))
 219                 par_extra_stuff += stuff;
 220 }
 221
 222
 223 void Context::dump(ostream & os, string const & desc) const
 224 {
 225         os << "\n" << desc <<" [";
 226         if (need_layout)
 227                 os << "need_layout ";
 228         if (need_end_layout)
 229                 os << "need_end_layout ";
 230         if (need_end_deeper)
 231                 os << "need_end_deeper ";
 232         if (has_item)
 233                 os << "has_item ";
 234         if (deeper_paragraph)
 235                 os << "deeper_paragraph ";
 236         if (new_layout_allowed)
 237                 os << "new_layout_allowed ";
 238         if (!extra_stuff.empty())
 239                 os << "extrastuff=[" << extra_stuff << "] ";
 240         if (!par_extra_stuff.empty())
 241                 os << "parextrastuff=[" << par_extra_stuff << "] ";
 242         os << "textclass=" << textclass.name()
 243            << " layout=" << to_utf8(layout->name())
 244            << " parent_layout=" << to_utf8(parent_layout->name()) << "] font=["
 245            << font.size << ' ' << font.family << ' ' << font.series << ' '
 246            << font.shape << ']' << endl;
 247 }
 248
 249
 250 } // namespace lyx