src/output_plaintext.C

   1 /**
   2  * \file output_plaintext.C
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Lars Gullik Bjønnes
   7  *
   8  * Full author contact details are available in file CREDITS.
   9  */
  10
  11 #include <config.h>
  12
  13 #include "output_plaintext.h"
  14
  15 #include "buffer.h"
  16 #include "bufferparams.h"
  17 #include "debug.h"
  18 #include "gettext.h"
  19 #include "output.h"
  20 #include "outputparams.h"
  21 #include "paragraph.h"
  22 #include "ParagraphList.h"
  23 #include "ParagraphParameters.h"
  24
  25 #include "support/lstrings.h"
  26
  27
  28 namespace lyx {
  29
  30 using support::ascii_lowercase;
  31 using support::compare_ascii_no_case;
  32 using support::compare_no_case;
  33 using support::contains;
  34 using support::FileName;
  35
  36 using std::endl;
  37 using std::ostream;
  38 using std::pair;
  39 using std::string;
  40
  41
  42 void writePlaintextFile(Buffer const & buf, FileName const & fname,
  43         OutputParams const & runparams)
  44 {
  45         odocfstream ofs;
  46         if (!openFileWrite(ofs, fname))
  47                 return;
  48         writePlaintextFile(buf, ofs, runparams);
  49 }
  50
  51
  52 void writePlaintextFile(Buffer const & buf, odocstream & os,
  53         OutputParams const & runparams)
  54 {
  55         bool ref_printed = false;
  56         ParagraphList const par = buf.paragraphs();
  57         ParagraphList::const_iterator beg = par.begin();
  58         ParagraphList::const_iterator end = par.end();
  59         ParagraphList::const_iterator it = beg;
  60         for (; it != end; ++it) {
  61                 writePlaintextParagraph(buf, *it, os, runparams, ref_printed);
  62                 os << "\n";
  63                 if (runparams.linelen > 0)
  64                         os << "\n";
  65         }
  66 }
  67
  68
  69 namespace {
  70
  71 pair<int, docstring> const addDepth(int depth, int ldepth)
  72 {
  73         int d = depth * 2;
  74         if (ldepth > depth)
  75                 d += (ldepth - depth) * 2;
  76         return make_pair(d, docstring(d, ' '));
  77 }
  78
  79 }
  80
  81
  82 void writePlaintextParagraph(Buffer const & buf,
  83                     Paragraph const & par,
  84                     odocstream & os,
  85                     OutputParams const & runparams,
  86                     bool & ref_printed)
  87 {
  88         int ltype = 0;
  89         depth_type ltype_depth = 0;
  90         depth_type depth = par.params().depth();
  91
  92         // First write the layout
  93         string const & tmp = par.layout()->name();
  94         if (compare_no_case(tmp, "itemize") == 0) {
  95                 ltype = 1;
  96                 ltype_depth = depth + 1;
  97         } else if (compare_ascii_no_case(tmp, "enumerate") == 0) {
  98                 ltype = 2;
  99                 ltype_depth = depth + 1;
 100         } else if (contains(ascii_lowercase(tmp), "ection")) {
 101                 ltype = 3;
 102                 ltype_depth = depth + 1;
 103         } else if (contains(ascii_lowercase(tmp), "aragraph")) {
 104                 ltype = 4;
 105                 ltype_depth = depth + 1;
 106         } else if (compare_ascii_no_case(tmp, "description") == 0) {
 107                 ltype = 5;
 108                 ltype_depth = depth + 1;
 109         } else if (compare_ascii_no_case(tmp, "abstract") == 0) {
 110                 ltype = 6;
 111                 ltype_depth = 0;
 112         } else if (compare_ascii_no_case(tmp, "bibliography") == 0) {
 113                 ltype = 7;
 114                 ltype_depth = 0;
 115         } else {
 116                 ltype = 0;
 117                 ltype_depth = 0;
 118         }
 119
 120         /* maybe some vertical spaces */
 121
 122         /* the labelwidthstring used in lists */
 123
 124         /* some lines? */
 125
 126         /* some pagebreaks? */
 127
 128         /* noindent ? */
 129
 130         /* what about the alignment */
 131
 132         // runparams.linelen == 0 is special and means we don't have paragraph breaks
 133
 134         string::size_type currlinelen = 0;
 135
 136         os << docstring(depth * 2, ' ');
 137         currlinelen += depth * 2;
 138
 139         //--
 140         // we should probably change to the paragraph language in the
 141         // gettext here (if possible) so that strings are output in
 142         // the correct language! (20012712 Jug)
 143         //--
 144         switch (ltype) {
 145         case 0: // Standard
 146         case 4: // (Sub)Paragraph
 147         case 5: // Description
 148                 break;
 149
 150         case 6: // Abstract
 151                 if (runparams.linelen > 0) {
 152                         os << _("Abstract") << "\n\n";
 153                         currlinelen = 0;
 154                 } else {
 155                         docstring const abst = _("Abstract") + from_ascii(": ");
 156                         os << abst;
 157                         currlinelen += abst.length();
 158                 }
 159                 break;
 160
 161         case 7: // Bibliography
 162                 if (!ref_printed) {
 163                         if (runparams.linelen > 0) {
 164                                 os << _("References") << "\n\n";
 165                                 currlinelen = 0;
 166                         } else {
 167                                 docstring const refs = _("References") + from_ascii(": ");
 168                                 os << refs;
 169                                 currlinelen += refs.length();
 170                         }
 171                         ref_printed = true;
 172                 }
 173                 break;
 174
 175         default: {
 176                 docstring const label = par.params().labelString();
 177                 if (!label.empty()) {
 178                         os << label << ' ';
 179                         currlinelen += label.length() + 1;
 180                 }
 181                 break;
 182         }
 183
 184         }
 185
 186         if (currlinelen == 0) {
 187                 pair<int, docstring> p = addDepth(depth, ltype_depth);
 188                 os << p.second;
 189                 currlinelen += p.first;
 190         }
 191
 192         docstring word;
 193
 194         for (pos_type i = 0; i < par.size(); ++i) {
 195                 if (par.isDeleted(i)) // deleted characters don't make much sense in plain text output
 196                         continue;
 197
 198                 char_type c = par.getUChar(buf.params(), i);
 199                 switch (c) {
 200                 case Paragraph::META_INSET: {
 201                         InsetBase const * inset = par.getInset(i);
 202
 203                         os << word;
 204                         currlinelen += word.length();
 205                         word.erase();
 206
 207                         OutputParams rp = runparams;
 208                         rp.depth = par.params().depth();
 209                         if (inset->plaintext(buf, os, rp)) {
 210                                 // to be sure it breaks paragraph
 211                                 currlinelen += runparams.linelen;
 212                         }
 213                         break;
 214                 }
 215
 216                 case ' ':
 217                         if (runparams.linelen > 0 &&
 218                             currlinelen + word.length() > runparams.linelen) {
 219                                 os << '\n';
 220                                 pair<int, docstring> p = addDepth(depth, ltype_depth);
 221                                 os << p.second;
 222                                 currlinelen = p.first;
 223                         }
 224                         os << word << ' ';
 225                         currlinelen += word.length() + 1;
 226                         word.erase();
 227                         break;
 228
 229                 case '\0':
 230                         lyxerr[Debug::INFO] <<
 231                                 "writePlaintextFile: NULL char in structure." << endl;
 232                         break;
 233
 234                 default:
 235                         word += c;
 236                         break;
 237                 }
 238         }
 239
 240         if (runparams.linelen > 0 &&
 241             currlinelen + word.length() > runparams.linelen) {
 242                 os << '\n';
 243                 pair<int, docstring> p = addDepth(depth, ltype_depth);
 244                 os << p.second;
 245                 currlinelen = p.first;
 246         }
 247         os << word;
 248 }
 249
 250
 251 } // namespace lyx