src/insets/InsetListings.cpp

   1 /**
   2  * \file InsetListings.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Bo Peng
   7  * \author Jürgen Spitzmüller
   8  *
   9  * Full author contact details are available in file CREDITS.
  10  */
  11
  12 #include <config.h>
  13
  14 #include "InsetListings.h"
  15 #include "InsetCaption.h"
  16
  17 #include "Buffer.h"
  18 #include "BufferParams.h"
  19 #include "Counters.h"
  20 #include "Cursor.h"
  21 #include "DispatchResult.h"
  22 #include "FuncRequest.h"
  23 #include "FuncStatus.h"
  24 #include "gettext.h"
  25 #include "InsetList.h"
  26 #include "Language.h"
  27 #include "MetricsInfo.h"
  28
  29 #include "support/lstrings.h"
  30
  31 #include <sstream>
  32
  33 namespace lyx {
  34
  35 using support::token;
  36 using support::contains;
  37 using support::subst;
  38
  39 using std::istringstream;
  40 using std::ostream;
  41 using std::ostringstream;
  42 using std::string;
  43
  44 char const lstinline_delimiters[] =
  45         "!*()-=+|;:'\"`,<.>/?QWERTYUIOPASDFGHJKLZXCVBNMqwertyuiopasdfghjklzxcvbnm";
  46
  47 void InsetListings::init()
  48 {
  49         setButtonLabel();
  50         FontInfo font = sane_font;
  51         font.decSize();
  52         font.decSize();
  53         font.setColor(Color_none);
  54         setLabelFont(font);
  55         // FIXME: what to do with those?
  56         //text_.current_font.setLanguage(latex_language);
  57         //text_.real_current_font.setLanguage(latex_language);
  58 }
  59
  60
  61 InsetListings::InsetListings(BufferParams const & bp, InsetListingsParams const & par)
  62         : InsetCollapsable(bp, par.status())
  63 {
  64         setLayout(bp);
  65         init();
  66 }
  67
  68
  69 InsetListings::InsetListings(InsetListings const & in)
  70         : InsetCollapsable(in), params_(in.params_)
  71 {
  72         init();
  73 }
  74
  75
  76 Inset * InsetListings::clone() const
  77 {
  78         return new InsetListings(*this);
  79 }
  80
  81
  82 InsetListings::~InsetListings()
  83 {
  84         InsetListingsMailer(*this).hideDialog();
  85 }
  86
  87
  88 Inset::DisplayType InsetListings::display() const
  89 {
  90         return params().isInline() || params().isFloat() ? Inline : AlignLeft;
  91 }
  92
  93
  94 void InsetListings::updateLabels(Buffer const & buf, ParIterator const & it)
  95 {
  96         Counters & cnts = buf.params().getTextClass().counters();
  97         string const saveflt = cnts.current_float();
  98
  99         // Tell to captions what the current float is
 100         cnts.current_float("listing");
 101
 102         InsetCollapsable::updateLabels(buf, it);
 103
 104         //reset afterwards
 105         cnts.current_float(saveflt);
 106 }
 107
 108
 109 void InsetListings::write(Buffer const & buf, ostream & os) const
 110 {
 111         os << "listings" << "\n";
 112         InsetListingsParams const & par = params();
 113         // parameter string is encoded to be a valid lyx token.
 114         string opt = par.encodedString();
 115         if (!opt.empty())
 116                 os << "lstparams \"" << opt << "\"\n";
 117         if (par.isInline())
 118                 os << "inline true\n";
 119         else
 120                 os << "inline false\n";
 121         InsetCollapsable::write(buf, os);
 122 }
 123
 124
 125 void InsetListings::read(Buffer const & buf, Lexer & lex)
 126 {
 127         while (lex.isOK()) {
 128                 lex.next();
 129                 string const token = lex.getString();
 130                 if (token == "lstparams") {
 131                         lex.next();
 132                         string const value = lex.getString();
 133                         params().fromEncodedString(value);
 134                 } else if (token == "inline") {
 135                         lex.next();
 136                         params().setInline(lex.getBool());
 137                 } else {
 138                         // no special option, push back 'status' etc
 139                         lex.pushToken(token);
 140                         break;
 141                 }
 142         }
 143         InsetCollapsable::read(buf, lex);
 144 }
 145
 146
 147 docstring const InsetListings::editMessage() const
 148 {
 149         return _("Opened Listing Inset");
 150 }
 151
 152
 153 int InsetListings::latex(Buffer const & buf, odocstream & os,
 154                     OutputParams const & runparams) const
 155 {
 156         string param_string = params().params();
 157         // NOTE: I use {} to quote text, which is an experimental feature
 158         // of the listings package (see page 25 of the manual)
 159         int lines = 0;
 160         bool isInline = params().isInline();
 161         // get the paragraphs. We can not output them directly to given odocstream
 162         // because we can not yet determine the delimiter character of \lstinline
 163         docstring code;
 164         ParagraphList::const_iterator par = paragraphs().begin();
 165         ParagraphList::const_iterator end = paragraphs().end();
 166
 167         while (par != end) {
 168                 pos_type siz = par->size();
 169                 bool captionline = false;
 170                 for (pos_type i = 0; i < siz; ++i) {
 171                         if (i == 0 && par->isInset(i) && i + 1 == siz)
 172                                 captionline = true;
 173                         // ignore all struck out text and (caption) insets
 174                         if (par->isDeleted(i) || par->isInset(i))
 175                                 continue;
 176                         code += par->getChar(i);
 177                 }
 178                 ++par;
 179                 // for the inline case, if there are multiple paragraphs
 180                 // they are simply joined. Otherwise, expect latex errors.
 181                 if (par != end && !isInline && !captionline) {
 182                         code += "\n";
 183                         ++lines;
 184                 }
 185         }
 186         if (isInline) {
 187                 char const * delimiter = lstinline_delimiters;
 188                 for (; delimiter != '\0'; ++delimiter)
 189                         if (!contains(code, *delimiter))
 190                                 break;
 191                 // This code piece contains all possible special character? !!!
 192                 // Replace ! with a warning message and use ! as delimiter.
 193                 if (*delimiter == '\0') {
 194                         code = subst(code, from_ascii("!"), from_ascii(" WARNING: no lstline delimiter can be used "));
 195                         delimiter = lstinline_delimiters;
 196                 }
 197                 if (param_string.empty())
 198                         os << "\\lstinline" << *delimiter;
 199                 else
 200                         os << "\\lstinline[" << from_ascii(param_string) << "]" << *delimiter;
 201                 os << code
 202                    << *delimiter;
 203         } else {
 204                 OutputParams rp = runparams;
 205                 // FIXME: the line below would fix bug 4182,
 206                 // but real_current_font moved to cursor.
 207                 //rp.local_font = &text_.real_current_font;
 208                 rp.moving_arg = true;
 209                 docstring const caption = getCaption(buf, rp);
 210                 runparams.encoding = rp.encoding;
 211                 if (param_string.empty() && caption.empty())
 212                         os << "\n\\begingroup\n\\inputencoding{latin1}\n\\begin{lstlisting}\n";
 213                 else {
 214                         os << "\n\\begingroup\n\\inputencoding{latin1}\n\\begin{lstlisting}[";
 215                         if (!caption.empty()) {
 216                                 os << "caption={" << caption << '}';
 217                                 if (!param_string.empty())
 218                                         os << ',';
 219                         }
 220                         os << from_utf8(param_string) << "]\n";
 221                 }
 222                 lines += 4;
 223                 os << code
 224                    << "\n\\end{lstlisting}\n\\endgroup\n";
 225                 lines += 3;
 226         }
 227
 228         return lines;
 229 }
 230
 231
 232 void InsetListings::doDispatch(Cursor & cur, FuncRequest & cmd)
 233 {
 234         switch (cmd.action) {
 235
 236         case LFUN_INSET_MODIFY: {
 237                 InsetListingsMailer::string2params(to_utf8(cmd.argument()), params());
 238                 break;
 239         }
 240         case LFUN_INSET_DIALOG_UPDATE:
 241                 InsetListingsMailer(*this).updateDialog(&cur.bv());
 242                 break;
 243         case LFUN_MOUSE_RELEASE: {
 244                 if (cmd.button() == mouse_button::button3 && hitButton(cmd)) {
 245                         InsetListingsMailer(*this).showDialog(&cur.bv());
 246                         break;
 247                 }
 248                 InsetCollapsable::doDispatch(cur, cmd);
 249                 break;
 250         }
 251         default:
 252                 InsetCollapsable::doDispatch(cur, cmd);
 253                 break;
 254         }
 255 }
 256
 257
 258 bool InsetListings::getStatus(Cursor & cur, FuncRequest const & cmd,
 259         FuncStatus & status) const
 260 {
 261         switch (cmd.action) {
 262                 case LFUN_INSET_DIALOG_UPDATE:
 263                         status.enabled(true);
 264                         return true;
 265                 case LFUN_CAPTION_INSERT:
 266                         status.enabled(!params().isInline());
 267                         return true;
 268                 default:
 269                         return InsetCollapsable::getStatus(cur, cmd, status);
 270         }
 271 }
 272
 273
 274 void InsetListings::setButtonLabel()
 275 {
 276         // FIXME UNICODE
 277         if (decoration() == Classic)
 278                 setLabel(isOpen() ?  _("Listing") : getNewLabel(_("Listing")));
 279         else
 280                 setLabel(getNewLabel(_("Listing")));
 281 }
 282
 283
 284 void InsetListings::validate(LaTeXFeatures & features) const
 285 {
 286         features.require("listings");
 287         InsetCollapsable::validate(features);
 288 }
 289
 290
 291 bool InsetListings::showInsetDialog(BufferView * bv) const
 292 {
 293         InsetListingsMailer(const_cast<InsetListings &>(*this)).showDialog(bv);
 294         return true;
 295 }
 296
 297
 298 docstring InsetListings::getCaption(Buffer const & buf,
 299                     OutputParams const & runparams) const
 300 {
 301         if (paragraphs().empty())
 302                 return docstring();
 303
 304         ParagraphList::const_iterator pit = paragraphs().begin();
 305         for (; pit != paragraphs().end(); ++pit) {
 306                 InsetList::const_iterator it = pit->insetList().begin();
 307                 for (; it != pit->insetList().end(); ++it) {
 308                         Inset & inset = *it->inset;
 309                         if (inset.lyxCode() == CAPTION_CODE) {
 310                                 odocstringstream ods;
 311                                 InsetCaption * ins =
 312                                         static_cast<InsetCaption *>(it->inset);
 313                                 ins->getOptArg(buf, ods, runparams);
 314                                 ins->getArgument(buf, ods, runparams);
 315                                 return ods.str();
 316                         }
 317                 }
 318         }
 319         return docstring();
 320 }
 321
 322
 323 string const InsetListingsMailer::name_("listings");
 324
 325 InsetListingsMailer::InsetListingsMailer(InsetListings & inset)
 326         : inset_(inset)
 327 {}
 328
 329
 330 string const InsetListingsMailer::inset2string(Buffer const &) const
 331 {
 332         return params2string(inset_.params());
 333 }
 334
 335
 336 void InsetListingsMailer::string2params(string const & in,
 337                                    InsetListingsParams & params)
 338 {
 339         params = InsetListingsParams();
 340         if (in.empty())
 341                 return;
 342         istringstream data(in);
 343         Lexer lex(0, 0);
 344         lex.setStream(data);
 345         // discard "listings", which is only used to determine inset
 346         lex.next();
 347         params.read(lex);
 348 }
 349
 350
 351 string const
 352 InsetListingsMailer::params2string(InsetListingsParams const & params)
 353 {
 354         ostringstream data;
 355         data << name_ << " ";
 356         params.write(data);
 357         return data.str();
 358 }
 359
 360
 361 } // namespace lyx