C++ FileName::absFileName方法代码示例

TextClass::ReturnValues TextClass::readWithoutConv(FileName const & filename, ReadType rt)
{
	if (!filename.isReadableFile()) {
		lyxerr << "Cannot read layout file `" << filename << "'."
		       << endl;
		return ERROR;
	}

	LYXERR(Debug::TCLASS, "Reading " + translateReadType(rt) + ": " +
		to_utf8(makeDisplayPath(filename.absFileName())));

	// Define the plain layout used in table cells, ert, etc. Note that 
	// we do this before loading any layout file, so that classes can 
	// override features of this layout if they should choose to do so.
	if (rt == BASECLASS && !hasLayout(plain_layout_))
		layoutlist_.push_back(createBasicLayout(plain_layout_));

	Lexer lexrc(textClassTags);
	lexrc.setFile(filename);
	ReturnValues retval = read(lexrc, rt);
	
	LYXERR(Debug::TCLASS, "Finished reading " + translateReadType(rt) + ": " +
			to_utf8(makeDisplayPath(filename.absFileName())));

	return retval;
}

FileName GuiClipboard::getAsGraphics(Cursor const & cur, GraphicsType type) const
{
	// get the filename from the user
	FileName filename = getPastedGraphicsFileName(cur, type);
	if (filename.empty())
		return FileName();

	// handle image cases first
	if (type == PngGraphicsType || type == JpegGraphicsType) {
		// get image from QImage from clipboard
		QImage image = qApp->clipboard()->image();
		if (image.isNull()) {
			LYXERR(Debug::ACTION, "No image in clipboard");
			return FileName();
		}

		// convert into graphics format
		QByteArray ar;
		QBuffer buffer(&ar);
		buffer.open(QIODevice::WriteOnly);
		if (type == PngGraphicsType)
			image.save(toqstr(filename.absFileName()), "PNG");
		else if (type == JpegGraphicsType)
			image.save(toqstr(filename.absFileName()), "JPEG");
		else
			LASSERT(false, /**/);
		
		return filename;
	}

bool LyXVC::registrer()
{
	FileName const filename = owner_->fileName();

	// there must be a file to save
	if (!filename.isReadableFile()) {
		Alert::error(_("Document not saved"),
			     _("You must save the document "
					    "before it can be registered."));
		return false;
	}

	// it is very likely here that the vcs is not created yet...
	if (!vcs) {
		//check in the root directory of the document
		FileName const cvs_entries(onlyPath(filename.absFileName()) + "/CVS/Entries");
		FileName const svn_entries(onlyPath(filename.absFileName()) + "/.svn/entries");
		FileName const git_index(onlyPath(filename.absFileName()) + "/.git/index");

		if (git_index.isReadableFile()) {
			LYXERR(Debug::LYXVC, "LyXVC: registering "
				<< to_utf8(filename.displayName()) << " with GIT");
			vcs.reset(new GIT(git_index, owner_));

		} else if (svn_entries.isReadableFile()) {
			LYXERR(Debug::LYXVC, "LyXVC: registering "
				<< to_utf8(filename.displayName()) << " with SVN");
			vcs.reset(new SVN(svn_entries, owner_));

		} else if (cvs_entries.isReadableFile()) {
			LYXERR(Debug::LYXVC, "LyXVC: registering "
				<< to_utf8(filename.displayName()) << " with CVS");
			vcs.reset(new CVS(cvs_entries, owner_));

		} else {
			LYXERR(Debug::LYXVC, "LyXVC: registering "
				<< to_utf8(filename.displayName()) << " with RCS");
			vcs.reset(new RCS(FileName(), owner_));
		}
	}

	LYXERR(Debug::LYXVC, "LyXVC: registrer");
	docstring response;
	bool ok = Alert::askForText(response, _("LyX VC: Initial description"),
			_("(no initial description)"));
	if (!ok) {
		LYXERR(Debug::LYXVC, "LyXVC: user cancelled");
		vcs.reset(0);
		return false;
	}
	if (response.empty())
		response = _("(no initial description)");
	vcs->registrer(to_utf8(response));
	return true;
}

bool FileName::clonePermissions(FileName const & source)
{
	QFile fin(toqstr(source.absFileName()));
	QFile f(toqstr(absFileName()));

	return f.setPermissions(fin.permissions());
}

void CacheItem::Impl::convertToDisplayFormat()
{
	LYXERR(Debug::GRAPHICS, "\tConverting it to " << to_ << " format.");

	// Make a local copy in case we unzip it
	FileName filename;
	string from;
	if (!tryDisplayFormat(filename, from)) {
		// The image status has changed, tell it to the outside world.
		statusChanged();
		return;
	}

	// We will need a conversion, tell it to the outside world.
	setStatus(Converting);

	// Add some stuff to create a uniquely named temporary file.
	// This file is deleted in loadImage after it is loaded into memory.
	FileName const to_file_base = FileName::tempName("CacheItem");
	remove_loaded_file_ = true;

	// Connect a signal to this->imageConverted and pass this signal to
	// the graphics converter so that we can load the modified file
	// on completion of the conversion process.
	converter_.reset(new Converter(filename, to_file_base.absFileName(), from, to_));
	converter_->connect(bind(&Impl::imageConverted, this, _1));
	converter_->startConversion();
}

bool LyXVC::file_not_found_hook(FileName const & fn)
{
	// Check if file is under RCS.
	// This happens if we are trying to load non existent
	// file on disk, but existent in ,v version.
	bool foundRCS = !RCS::findFile(fn).empty();
	bool foundCVS = foundRCS ? false : !CVS::findFile(fn).empty();
	bool foundSVN = (foundRCS || foundCVS) ? false : !SVN::findFile(fn).empty();
	bool foundGIT = (foundRCS || foundCVS || foundSVN) ? false : !GIT::findFile(fn).empty();
	if (foundRCS || foundCVS || foundSVN || foundGIT) {
		docstring const file = makeDisplayPath(fn.absFileName(), 20);
		docstring const text =
			bformat(_("Do you want to retrieve the document"
						   " %1$s from version control?"), file);
		int const ret = Alert::prompt(_("Retrieve from version control?"),
			text, 0, 1, _("&Retrieve"), _("&Cancel"));

		if (ret == 0) {
			// Since the retrieve commands are implemented using
			// more general update commands we need to ensure that
			// we do not change an existing file by accident.
			if (fn.exists())
				return false;
			if (foundRCS)
				return RCS::retrieve(fn);
			else if (foundCVS)
				return CVS::retrieve(fn);
			else if (foundSVN)
				return SVN::retrieve(fn);
			else
				return GIT::retrieve(fn);
		}
	}
	return false;
}

FileName const RCS::findFile(FileName const & file)
{
	// Check if *,v exists.
	FileName tmp(file.absFileName() + ",v");
	LYXERR(Debug::LYXVC, "LyXVC: Checking if file is under rcs: " << tmp);
	if (tmp.isReadableFile()) {
		LYXERR(Debug::LYXVC, "Yes, " << file << " is under rcs.");
		return tmp;
	}

	// Check if RCS/*,v exists.
	tmp = FileName(addName(addPath(onlyPath(file.absFileName()), "RCS"), file.absFileName()) + ",v");
	LYXERR(Debug::LYXVC, "LyXVC: Checking if file is under rcs: " << tmp);
	if (tmp.isReadableFile()) {
		LYXERR(Debug::LYXVC, "Yes, " << file << " is under rcs.");
		return tmp;
	}

	return FileName();
}

/** copy file \p sourceFile to \p destFile. If \p force is false, the user
 *  will be asked before existing files are overwritten. If \p only_tmp
 *  is true, then only copy files that are in our tmp dir (to avoid other files
 *  overwriting themselves).
 *  \return
 *  - SUCCESS if this file got copied
 *  - FORCE   if subsequent calls should not ask for confirmation before
 *            overwriting files anymore.
 *  - CANCEL  if the export should be cancelled
 */
CopyStatus copyFile(string const & format,
		    FileName const & sourceFile, FileName const & destFile,
		    string const & latexFile, bool force, bool only_tmp)
{
	CopyStatus ret = force ? FORCE : SUCCESS;

	// This check could be changed to
	// boost::filesystem::equivalent(sourceFile, destFile) if export to
	// other directories than the document directory is desired.
	// Also don't overwrite files that already exist and are identical
	// to the source files.
	if ((only_tmp && !prefixIs(onlyPath(sourceFile.absFileName()), package().temp_dir().absFileName()))
	    || sourceFile.checksum() == destFile.checksum())
		return ret;

	if (!force) {
		switch(checkOverwrite(destFile)) {
		case 0:
			return SUCCESS;
		case 1:
			ret = SUCCESS;
			break;
		case 2:
			ret = FORCE;
			break;
		default:
			return CANCEL;
		}
	}

	Mover const & mover = getMover(format);
	if (!mover.copy(sourceFile, destFile, latexFile))
		Alert::error(_("Couldn't copy file"),
			     bformat(_("Copying %1$s to %2$s failed."),
				     makeDisplayPath(sourceFile.absFileName()),
				     makeDisplayPath(destFile.absFileName())));

	return ret;
}

/// Ask the user what to do if a file already exists
static int checkOverwrite(FileName const & filename)
{
	if (!filename.exists())
		return 1;

	docstring text = bformat(_("The file %1$s already exists.\n\n"
				   "Do you want to overwrite that file?"),
				   makeDisplayPath(filename.absFileName()));
	return Alert::prompt(_("Overwrite file?"),
				text, 0, 3,
				_("&Keep file"), _("&Overwrite"),
				_("Overwrite &all"), _("&Cancel export"));
}

bool ConverterCache::copy(FileName const & orig_from, string const & to_format,
		FileName const & dest) const
{
	if (!lyxrc.use_converter_cache || orig_from.empty() || dest.empty())
		return false;
	LYXERR(Debug::FILES, orig_from << ' ' << to_format << ' ' << dest);

	// FIXME: Should not hardcode this (see bug 3819 for details)
	if (to_format == "pstex") {
		FileName const dest_eps(changeExtension(dest.absFileName(), "eps"));
		if (!copy(orig_from, "eps", dest_eps))
			return false;
	} else if (to_format == "pdftex") {
		FileName const dest_pdf(changeExtension(dest.absFileName(), "pdf"));
		if (!copy(orig_from, "pdf", dest_pdf))
			return false;
	}

	CacheItem * const item = pimpl_->find(orig_from, to_format);
	LASSERT(item, /**/);
	Mover const & mover = getMover(to_format);
	return mover.copy(item->cache_name, dest,
	                  onlyFileName(dest.absFileName()));
}

void rescanTexStyles(string const & arg)
{
	// Run rescan in user lyx directory
	PathChanger p(package().user_support());
	FileName const prog = support::libFileSearch("scripts", "TeXFiles.py");
	Systemcall one;
	string const command = os::python() + ' ' +
	    quoteName(prog.toFilesystemEncoding()) + ' ' +
	    arg;
	int const status = one.startscript(Systemcall::Wait, command);
	if (status == 0)
		return;
	// FIXME UNICODE
	frontend::Alert::error(_("Could not update TeX information"),
		bformat(_("The script `%1$s' failed."), from_utf8(prog.absFileName())));
}

string const LyXVC::getLogFile() const
{
	if (!vcs)
		return string();

	TempFile tempfile("lyxvclog");
	tempfile.setAutoRemove(false);
	FileName const tmpf = tempfile.name();
	if (tmpf.empty()) {
		LYXERR(Debug::LYXVC, "Could not generate logfile " << tmpf);
		return string();
	}
	LYXERR(Debug::LYXVC, "Generating logfile " << tmpf);
	vcs->getLog(tmpf);
	return tmpf.absFileName();
}

/// Connect to the socket \p name.
int connect(FileName const & name)
{
	int fd; // File descriptor for the socket
	sockaddr_un addr; // Structure that hold the socket address

	string const encoded = name.toFilesystemEncoding();
	// char sun_path[108]
	string::size_type len = encoded.size();
	if (len > 107) {
		cerr << "lyxclient: Socket address '" << name
		     << "' too long." << endl;
		return -1;
	}
	// Synonims for AF_UNIX are AF_LOCAL and AF_FILE
	addr.sun_family = AF_UNIX;
	encoded.copy(addr.sun_path, 107);
	addr.sun_path[len] = '\0';

	if ((fd = ::socket(PF_UNIX, SOCK_STREAM, 0))== -1) {
		cerr << "lyxclient: Could not create socket descriptor: "
		     << strerror(errno) << endl;
		return -1;
	}
	if (::connect(fd,
		      reinterpret_cast<struct sockaddr *>(&addr),
		      sizeof(addr)) == -1) {
		cerr << "lyxclient: Could not connect to socket " << name.absFileName()
		     << ": " << strerror(errno) << endl;
		::close(fd);
		return -1;
	}
	if (::fcntl(fd, F_SETFL, O_NONBLOCK) == -1) {
		cerr << "lyxclient: Could not set O_NONBLOCK for socket: "
		     << strerror(errno) << endl;
		::close(fd);
		return -1;
	}
	return fd;
}

// Reads a textclass structure from file.
TextClass::ReturnValues TextClass::read(Lexer & lexrc, ReadType rt) 
{
	if (!lexrc.isOK())
		return ERROR;

	// Format of files before the 'Format' tag was introduced
	int format = 1;
	bool error = false;

	// parsing
	while (lexrc.isOK() && !error) {
		int le = lexrc.lex();

		switch (le) {
		case Lexer::LEX_FEOF:
			continue;

		case Lexer::LEX_UNDEF:
			lexrc.printError("Unknown TextClass tag `$$Token'");
			error = true;
			continue;

		default:
			break;
		}

		// used below to track whether we are in an IfStyle or IfCounter tag.
		bool ifstyle    = false;
		bool ifcounter  = false;

		switch (static_cast<TextClassTags>(le)) {

		case TC_FORMAT:
			if (lexrc.next())
				format = lexrc.getInteger();
			break;

		case TC_OUTPUTFORMAT:
			if (lexrc.next())
				outputFormat_ = lexrc.getString();
			break;

		case TC_OUTPUTTYPE:
			readOutputType(lexrc);
			switch(outputType_) {
			case LATEX:
				outputFormat_ = "latex";
				break;
			case DOCBOOK:
				outputFormat_ = "docbook";
				break;
			case LITERATE:
				outputFormat_ = "literate";
				break;
			}
			break;

		case TC_INPUT: // Include file
			if (lexrc.next()) {
				string const inc = lexrc.getString();
				FileName tmp = libFileSearch("layouts", inc,
							    "layout");

				if (tmp.empty()) {
					lexrc.printError("Could not find input file: " + inc);
					error = true;
				} else if (!read(tmp, MERGE)) {
					lexrc.printError("Error reading input file: " + tmp.absFileName());
					error = true;
				}
			}
			break;

		case TC_DEFAULTSTYLE:
			if (lexrc.next()) {
				docstring const name = from_utf8(subst(lexrc.getString(),
							  '_', ' '));
				defaultlayout_ = name;
			}
			break;

		case TC_IFSTYLE:
			ifstyle = true;
			// fall through
		case TC_STYLE: {
			if (!lexrc.next()) {
				lexrc.printError("No name given for style: `$$Token'.");
				error = true;
				break;
			}
			docstring const name = from_utf8(subst(lexrc.getString(),
							'_', ' '));
			if (name.empty()) {
				string s = "Could not read name for style: `$$Token' "
					+ lexrc.getString() + " is probably not valid UTF-8!";
				lexrc.printError(s);
				Layout lay;
				// Since we couldn't read the name, we just scan the rest
				// of the style and discard it.
//.........这里部分代码省略.........

void ConverterCache::add(FileName const & orig_from, string const & to_format,
		FileName const & converted_file) const
{
	if (!lyxrc.use_converter_cache || orig_from.empty() ||
	    converted_file.empty())
		return;
	LYXERR(Debug::FILES, ' ' << orig_from
			     << ' ' << to_format << ' ' << converted_file);

	// FIXME: Should not hardcode this (see bug 3819 for details)
	if (to_format == "pstex") {
		FileName const converted_eps(changeExtension(converted_file.absFileName(), "eps"));
		add(orig_from, "eps", converted_eps);
	} else if (to_format == "pdftex") {
		FileName const converted_pdf(changeExtension(converted_file.absFileName(), "pdf"));
		add(orig_from, "pdf", converted_pdf);
	}

	// Is the file in the cache already?
	CacheItem * item = pimpl_->find(orig_from, to_format);

	time_t const timestamp = orig_from.lastModified();
	Mover const & mover = getMover(to_format);
	if (item) {
		LYXERR(Debug::FILES, "ConverterCache::add(" << orig_from << "):\n"
					"The file is already in the cache.");
		// First test for timestamp
		if (timestamp == item->timestamp) {
			LYXERR(Debug::FILES, "Same timestamp.");
			return;
		}
		// Maybe the contents is still the same?
		item->timestamp = timestamp;
		unsigned long const checksum = orig_from.checksum();
		if (checksum == item->checksum) {
			LYXERR(Debug::FILES, "Same checksum.");
			return;
		}
		item->checksum = checksum;
		if (!mover.copy(converted_file, item->cache_name,
		              onlyFileName(item->cache_name.absFileName()))) {
			LYXERR(Debug::FILES, "Could not copy file " << orig_from << " to "
				<< item->cache_name);
		} else if (!item->cache_name.changePermission(0600)) {
			LYXERR(Debug::FILES, "Could not change file mode"
				<< item->cache_name);
		}
	} else {
		CacheItem new_item(orig_from, to_format, timestamp,
				orig_from.checksum());
		if (mover.copy(converted_file, new_item.cache_name,
		              onlyFileName(new_item.cache_name.absFileName()))) {
			if (!new_item.cache_name.changePermission(0600)) {
				LYXERR(Debug::FILES, "Could not change file mode"
					<< new_item.cache_name);
			}
			FormatCache & format_cache = pimpl_->cache[orig_from];
			if (format_cache.from_format.empty())
				format_cache.from_format =
					formats.getFormatFromFile(orig_from);
			format_cache.cache[to_format] = new_item;
		} else
			LYXERR(Debug::FILES, "ConverterCache::add(" << orig_from << "):\n"
						"Could not copy file.");
	}
}