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 "support/gettext.h"
  25 #include "InsetList.h"
  26 #include "Language.h"
  27 #include "MetricsInfo.h"
  28 #include "TextClass.h"
  29
  30 #include "support/docstream.h"
  31 #include "support/lstrings.h"
  32
  33 #include <boost/regex.hpp>
  34
  35 #include <sstream>
  36
  37 using namespace std;
  38 using namespace lyx::support;
  39
  40 namespace lyx {
  41
  42 using boost::regex;
  43
  44 char const lstinline_delimiters[] =
  45         "!*()-=+|;:'\"`,<.>/?QWERTYUIOPASDFGHJKLZXCVBNMqwertyuiopasdfghjklzxcvbnm";
  46
  47 InsetListings::InsetListings(Buffer const & buf, InsetListingsParams const & par)
  48         : InsetCollapsable(buf, par.status())
  49 {}
  50
  51
  52 InsetListings::~InsetListings()
  53 {
  54         InsetListingsMailer(*this).hideDialog();
  55 }
  56
  57
  58 Inset::DisplayType InsetListings::display() const
  59 {
  60         return params().isInline() || params().isFloat() ? Inline : AlignLeft;
  61 }
  62
  63
  64 void InsetListings::updateLabels(ParIterator const & it)
  65 {
  66         Counters & cnts = buffer().params().documentClass().counters();
  67         string const saveflt = cnts.current_float();
  68
  69         // Tell to captions what the current float is
  70         cnts.current_float("listing");
  71
  72         InsetCollapsable::updateLabels(it);
  73
  74         //reset afterwards
  75         cnts.current_float(saveflt);
  76 }
  77
  78
  79 void InsetListings::write(ostream & os) const
  80 {
  81         os << "listings" << "\n";
  82         InsetListingsParams const & par = params();
  83         // parameter string is encoded to be a valid lyx token.
  84         string opt = par.encodedString();
  85         if (!opt.empty())
  86                 os << "lstparams \"" << opt << "\"\n";
  87         if (par.isInline())
  88                 os << "inline true\n";
  89         else
  90                 os << "inline false\n";
  91         InsetCollapsable::write(os);
  92 }
  93
  94
  95 void InsetListings::read(Lexer & lex)
  96 {
  97         while (lex.isOK()) {
  98                 lex.next();
  99                 string const token = lex.getString();
 100                 if (token == "lstparams") {
 101                         lex.next();
 102                         string const value = lex.getString();
 103                         params().fromEncodedString(value);
 104                 } else if (token == "inline") {
 105                         lex.next();
 106                         params().setInline(lex.getBool());
 107                 } else {
 108                         // no special option, push back 'status' etc
 109                         lex.pushToken(token);
 110                         break;
 111                 }
 112         }
 113         InsetCollapsable::read(lex);
 114 }
 115
 116
 117 docstring InsetListings::editMessage() const
 118 {
 119         return _("Opened Listing Inset");
 120 }
 121
 122
 123 int InsetListings::latex(odocstream & os, OutputParams const & runparams) const
 124 {
 125         string param_string = params().params();
 126         // NOTE: I use {} to quote text, which is an experimental feature
 127         // of the listings package (see page 25 of the manual)
 128         int lines = 0;
 129         bool isInline = params().isInline();
 130         // get the paragraphs. We can not output them directly to given odocstream
 131         // because we can not yet determine the delimiter character of \lstinline
 132         docstring code;
 133         ParagraphList::const_iterator par = paragraphs().begin();
 134         ParagraphList::const_iterator end = paragraphs().end();
 135
 136         while (par != end) {
 137                 pos_type siz = par->size();
 138                 bool captionline = false;
 139                 for (pos_type i = 0; i < siz; ++i) {
 140                         if (i == 0 && par->isInset(i) && i + 1 == siz)
 141                                 captionline = true;
 142                         // ignore all struck out text and (caption) insets
 143                         if (par->isDeleted(i) || par->isInset(i))
 144                                 continue;
 145                         code += par->getChar(i);
 146                 }
 147                 ++par;
 148                 // for the inline case, if there are multiple paragraphs
 149                 // they are simply joined. Otherwise, expect latex errors.
 150                 if (par != end && !isInline && !captionline) {
 151                         code += "\n";
 152                         ++lines;
 153                 }
 154         }
 155         if (isInline) {
 156                 char const * delimiter = lstinline_delimiters;
 157                 for (; delimiter != '\0'; ++delimiter)
 158                         if (!contains(code, *delimiter))
 159                                 break;
 160                 // This code piece contains all possible special character? !!!
 161                 // Replace ! with a warning message and use ! as delimiter.
 162                 if (*delimiter == '\0') {
 163                         code = subst(code, from_ascii("!"), from_ascii(" WARNING: no lstline delimiter can be used "));
 164                         delimiter = lstinline_delimiters;
 165                 }
 166                 if (param_string.empty())
 167                         os << "\\lstinline" << *delimiter;
 168                 else
 169                         os << "\\lstinline[" << from_ascii(param_string) << "]" << *delimiter;
 170                 os << code
 171                    << *delimiter;
 172         } else {
 173                 OutputParams rp = runparams;
 174                 // FIXME: the line below would fix bug 4182,
 175                 // but real_current_font moved to cursor.
 176                 //rp.local_font = &text_.real_current_font;
 177                 rp.moving_arg = true;
 178                 docstring const caption = getCaption(rp);
 179                 runparams.encoding = rp.encoding;
 180                 if (param_string.empty() && caption.empty())
 181                         os << "\n\\begingroup\n\\inputencoding{latin1}\n\\begin{lstlisting}\n";
 182                 else {
 183                         os << "\n\\begingroup\n\\inputencoding{latin1}\n\\begin{lstlisting}[";
 184                         if (!caption.empty()) {
 185                                 os << "caption={" << caption << '}';
 186                                 if (!param_string.empty())
 187                                         os << ',';
 188                         }
 189                         os << from_utf8(param_string) << "]\n";
 190                 }
 191                 lines += 4;
 192                 os << code << "\n\\end{lstlisting}\n\\endgroup\n";
 193                 lines += 3;
 194         }
 195
 196         return lines;
 197 }
 198
 199
 200 void InsetListings::doDispatch(Cursor & cur, FuncRequest & cmd)
 201 {
 202         switch (cmd.action) {
 203
 204         case LFUN_INSET_MODIFY: {
 205                 InsetListingsMailer::string2params(to_utf8(cmd.argument()), params());
 206                 break;
 207         }
 208         case LFUN_INSET_DIALOG_UPDATE:
 209                 InsetListingsMailer(*this).updateDialog(&cur.bv());
 210                 break;
 211         case LFUN_MOUSE_RELEASE: {
 212                 if (cmd.button() == mouse_button::button3 && hitButton(cmd)) {
 213                         InsetListingsMailer(*this).showDialog(&cur.bv());
 214                         break;
 215                 }
 216                 InsetCollapsable::doDispatch(cur, cmd);
 217                 break;
 218         }
 219         default:
 220                 InsetCollapsable::doDispatch(cur, cmd);
 221                 break;
 222         }
 223 }
 224
 225
 226 bool InsetListings::getStatus(Cursor & cur, FuncRequest const & cmd,
 227         FuncStatus & status) const
 228 {
 229         switch (cmd.action) {
 230                 case LFUN_INSET_DIALOG_UPDATE:
 231                         status.enabled(true);
 232                         return true;
 233                 case LFUN_CAPTION_INSERT:
 234                         status.enabled(!params().isInline());
 235                         return true;
 236                 default:
 237                         return InsetCollapsable::getStatus(cur, cmd, status);
 238         }
 239 }
 240
 241
 242 void InsetListings::setButtonLabel()
 243 {
 244         // FIXME UNICODE
 245         if (decoration() == InsetLayout::Classic)
 246                 setLabel(isOpen() ?  _("Listing") : getNewLabel(_("Listing")));
 247         else
 248                 setLabel(getNewLabel(_("Listing")));
 249 }
 250
 251
 252 void InsetListings::validate(LaTeXFeatures & features) const
 253 {
 254         features.require("listings");
 255         InsetCollapsable::validate(features);
 256 }
 257
 258
 259 bool InsetListings::showInsetDialog(BufferView * bv) const
 260 {
 261         InsetListingsMailer(const_cast<InsetListings &>(*this)).showDialog(bv);
 262         return true;
 263 }
 264
 265
 266 docstring InsetListings::getCaption(OutputParams const & runparams) const
 267 {
 268         if (paragraphs().empty())
 269                 return docstring();
 270
 271         ParagraphList::const_iterator pit = paragraphs().begin();
 272         for (; pit != paragraphs().end(); ++pit) {
 273                 InsetList::const_iterator it = pit->insetList().begin();
 274                 for (; it != pit->insetList().end(); ++it) {
 275                         Inset & inset = *it->inset;
 276                         if (inset.lyxCode() == CAPTION_CODE) {
 277                                 odocstringstream ods;
 278                                 InsetCaption * ins =
 279                                         static_cast<InsetCaption *>(it->inset);
 280                                 ins->getOptArg(ods, runparams);
 281                                 ins->getArgument(ods, runparams);
 282                                 // the caption may contain \label{} but the listings
 283                                 // package prefer caption={}, label={}
 284                                 docstring cap = ods.str();
 285                                 if (!contains(to_utf8(cap), "\\label{"))
 286                                         return cap;
 287                                 // convert from
 288                                 //     blah1\label{blah2} blah3
 289                                 // to
 290                                 //     blah1 blah3},label={blah2
 291                                 // to form options
 292                                 //     caption={blah1 blah3},label={blah2}
 293                                 //
 294                                 // NOTE that } is not allowed in blah2.
 295                                 regex const reg("(.*)\\\\label\\{(.*?)\\}(.*)");
 296                                 string const new_cap("\\1\\3},label={\\2");
 297                                 return from_utf8(regex_replace(to_utf8(cap), reg, new_cap));
 298                         }
 299                 }
 300         }
 301         return docstring();
 302 }
 303
 304
 305 string const InsetListingsMailer::name_("listings");
 306
 307 InsetListingsMailer::InsetListingsMailer(InsetListings & inset)
 308         : inset_(inset)
 309 {}
 310
 311
 312 string const InsetListingsMailer::inset2string(Buffer const &) const
 313 {
 314         return params2string(inset_.params());
 315 }
 316
 317
 318 void InsetListingsMailer::string2params(string const & in,
 319                                    InsetListingsParams & params)
 320 {
 321         params = InsetListingsParams();
 322         if (in.empty())
 323                 return;
 324         istringstream data(in);
 325         Lexer lex(0, 0);
 326         lex.setStream(data);
 327         // discard "listings", which is only used to determine inset
 328         lex.next();
 329         params.read(lex);
 330 }
 331
 332
 333 string const
 334 InsetListingsMailer::params2string(InsetListingsParams const & params)
 335 {
 336         ostringstream data;
 337         data << name_ << " ";
 338         params.write(data);
 339         return data.str();
 340 }
 341
 342
 343 } // namespace lyx