src/tex2lyx/context.C

   1 /**
   2  * \file context.C
   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 <iostream>
  14
  15 #include "support/lstrings.h"
  16 #include "context.h"
  17
  18 using std::ostream;
  19 using std::endl;
  20 using std::string;
  21
  22
  23 namespace {
  24
  25 void begin_layout(ostream & os, LyXLayout_ptr layout)
  26 {
  27         os << "\n\\begin_layout " << layout->name() << "\n";
  28 }
  29
  30
  31 void end_layout(ostream & os)
  32 {
  33         os << "\n\\end_layout\n";
  34 }
  35
  36
  37 void begin_deeper(ostream & os)
  38 {
  39         os << "\n\\begin_deeper \n";
  40 }
  41
  42
  43 void end_deeper(ostream & os)
  44 {
  45         os << "\n\\end_deeper \n";
  46 }
  47
  48 }
  49
  50 Context::Context(bool need_layout_,
  51                  LyXTextClass const & textclass_,
  52                  LyXLayout_ptr layout_, LyXLayout_ptr parent_layout_)
  53         : need_layout(need_layout_),
  54           need_end_layout(false), need_end_deeper(false),
  55           has_item(false), deeper_paragraph(false),
  56           textclass(textclass_),
  57           layout(layout_), parent_layout(parent_layout_)
  58 {
  59         if (!layout.get())
  60                 layout = textclass.defaultLayout();
  61         if (!parent_layout.get())
  62                 parent_layout = textclass.defaultLayout();
  63 }
  64
  65
  66 void Context::check_layout(ostream & os)
  67 {
  68         if (need_layout) {
  69                 check_end_layout(os);
  70
  71                 // are we in a list-like environment?
  72                 if (layout->isEnvironment()
  73                     && layout->latextype != LATEX_ENVIRONMENT) {
  74                         if (has_item) {
  75                                 if (deeper_paragraph) {
  76                                         end_deeper(os);
  77                                         deeper_paragraph = false;
  78                                 }
  79                                 begin_layout(os, layout);
  80                                 has_item = false;
  81                                 need_layout=false;
  82                                 need_end_layout = true;
  83                         } else {
  84                                 // a standard paragraph in an
  85                                 // enumeration. We have to recognize
  86                                 // that this may require a begin_deeper.
  87                                 if (!deeper_paragraph)
  88                                         begin_deeper(os);
  89                                 begin_layout(os, textclass.defaultLayout());
  90                                 need_layout=false;
  91                                 need_end_layout = true;
  92                                 deeper_paragraph = true;
  93                         }
  94                 } else {
  95                         begin_layout(os, layout);
  96                         need_layout=false;
  97                         need_end_layout = true;
  98                 }
  99                 if (!extra_stuff.empty()) {
 100                         os << extra_stuff;
 101                         extra_stuff.erase();
 102                 }
 103                 os << "\n";
 104         }
 105 }
 106
 107
 108 void Context::check_end_layout(ostream & os)
 109 {
 110         if (need_end_layout) {
 111                 end_layout(os);
 112                 need_end_layout = false;
 113         }
 114 }
 115
 116
 117 void Context::check_deeper(ostream & os)
 118 {
 119         if (parent_layout->isEnvironment()) {
 120                 if (need_end_deeper) {
 121                         // no need to have \end_deeper \begin_deeper
 122                         need_end_deeper = false;
 123                 } else {
 124                         begin_deeper(os);
 125                         need_end_deeper = true;
 126                 }
 127         } else
 128                 check_end_deeper(os);
 129 }
 130
 131
 132 void Context::check_end_deeper(ostream & os)
 133 {
 134         if (need_end_deeper) {
 135                 end_deeper(os);
 136                 need_end_deeper = false;
 137         }
 138         if (deeper_paragraph) {
 139                 end_deeper(os);
 140                 deeper_paragraph = false;
 141         }
 142 }
 143
 144
 145 void Context::set_item()
 146 {
 147         need_layout = true;
 148         has_item = true;
 149 }
 150
 151
 152 void Context::new_paragraph(ostream & os)
 153 {
 154         check_end_layout(os);
 155         need_layout = true;
 156 }
 157
 158
 159 void Context::add_extra_stuff(std::string const & stuff)
 160 {
 161         if (!lyx::support::contains(extra_stuff, stuff))
 162                 extra_stuff += stuff;
 163 }
 164
 165
 166 void Context::dump(ostream & os, string const & desc) const
 167 {
 168         os << "\n" << desc <<" [";
 169         if (need_layout)
 170                 os << "need_layout ";
 171         if (need_end_layout)
 172                 os << "need_end_layout ";
 173         if (need_end_deeper)
 174                 os << "need_end_deeper ";
 175         if (has_item)
 176                 os << "has_item ";
 177         if (deeper_paragraph)
 178                 os << "deeper_paragraph ";
 179         if (!extra_stuff.empty())
 180                 os << "extrastuff=[" << extra_stuff << "] ";
 181         os << "layout=" << layout->name();
 182         os << " parent_layout=" << parent_layout->name() << "]" << endl;
 183 }