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