C++ FileName::toFilesystemEncoding方法代码示例

bool SpecialisedMover::do_copy(FileName const & from, FileName const & to,
			       string const & latex) const
{
	if (command_.empty())
		return Mover::do_copy(from, to, latex);

	string command = command_;
	command = subst(command, "$$i", quoteName(from.toFilesystemEncoding()));
	command = subst(command, "$$o", quoteName(to.toFilesystemEncoding()));
	command = subst(command, "$$l", quoteName(latex));

	Systemcall one;
	return one.startscript(Systemcall::Wait, command) == 0;
}

void initSymbols()
{
	FileName const filename = libFileSearch(string(), "symbols");
	LYXERR(Debug::MATHED, "read symbols from " << filename);
	if (filename.empty()) {
		lyxerr << "Could not find symbols file" << endl;
		return;
	}

	ifstream fs(filename.toFilesystemEncoding().c_str());
	string line;
	bool skip = false;
	while (getline(fs, line)) {
		int charid     = 0;
		int fallbackid = 0;
		if (line.empty() || line[0] == '#')
			continue;

		// special case of iffont/else/endif
		if (line.size() >= 7 && line.substr(0, 6) == "iffont") {
			istringstream is(line);
			string tmp;
			is >> tmp;
			is >> tmp;
			skip = !isMathFontAvailable(tmp);
			continue;
		} else if (line.size() >= 4 && line.substr(0, 4) == "else") {

bool tex2lyx(string const & infilename, FileName const & outfilename, 
	     string const & encoding)
{
	if (outfilename.isReadableFile()) {
		if (overwrite_files) {
			cerr << "Overwriting existing file "
			     << outfilename << endl;
		} else {
			cerr << "Not overwriting existing file "
			     << outfilename << endl;
			return false;
		}
	} else {
		cerr << "Creating file " << outfilename << endl;
	}
	ofstream os(outfilename.toFilesystemEncoding().c_str());
	if (!os.good()) {
		cerr << "Could not open output file \"" << outfilename
		     << "\" for writing." << endl;
		return false;
	}
#ifdef FILEDEBUG
	cerr << "Input file: " << infilename << "\n";
	cerr << "Output file: " << outfilename << "\n";
#endif
	return tex2lyx(FileName(infilename), os, encoding);
}

bool TextClass::read(std::string const & str, ReadType rt) 
{
	Lexer lexrc(textClassTags);
	istringstream is(str);
	lexrc.setStream(is);
	ReturnValues retval = read(lexrc, rt);

	if (retval != FORMAT_MISMATCH) 
		return retval == OK;

	// write the layout string to a temporary file
	FileName const tempfile = FileName::tempName("TextClass_read");
	ofstream os(tempfile.toFilesystemEncoding().c_str());
	if (!os) {
		LYXERR0("Unable to create temporary file");
		return false;
	}
	os << str;
	os.close();

	// now try to convert it
	bool const worx = convertLayoutFormat(tempfile, rt);
	if (!worx) {
		LYXERR0("Unable to convert internal layout information to format " 
			<< LAYOUT_FORMAT);
	}
	tempfile.removeFile();
	return worx;
}

void ConverterCache::Impl::readIndex()
{
	time_t const now = current_time();
	FileName const index(addName(cache_dir.absFileName(), "index"));
	ifstream is(index.toFilesystemEncoding().c_str());
	Lexer lex;
	lex.setStream(is);
	while (lex.isOK()) {
		if (!lex.next(true))
			break;
		string const orig_from = lex.getString();
		if (!lex.next())
			break;
		string const to_format = lex.getString();
		if (!lex.next())
			break;
		time_t const timestamp =
			convert<unsigned long>(lex.getString());
		if (!lex.next())
			break;
		unsigned long const checksum =
			convert<unsigned long>(lex.getString());
		FileName const orig_from_name(orig_from);
		CacheItem item(orig_from_name, to_format, timestamp, checksum);

		// Don't cache files that do not exist anymore
		if (!orig_from_name.exists()) {
			LYXERR(Debug::FILES, "Not caching file `"
				<< orig_from << "' (does not exist anymore).");
			item.cache_name.removeFile();
			continue;
		}

		// Don't add items that are not in the cache anymore
		// This can happen if two instances of LyX are running
		// at the same time and update the index file independantly.
		if (!item.cache_name.exists()) {
			LYXERR(Debug::FILES, "Not caching file `" << orig_from
				<< "' (cached copy does not exist anymore).");
			continue;
		}

		// Delete the cached file if it is too old
		if (difftime(now, item.cache_name.lastModified())
				> lyxrc.converter_cache_maxage) {
			LYXERR(Debug::FILES, "Not caching file `"
				<< orig_from << "' (too old).");
			item.cache_name.removeFile();
			continue;
		}

		FormatCache & format_cache = cache[orig_from_name];
		if (format_cache.from_format.empty())
			format_cache.from_format =
				formats.getFormatFromFile(orig_from_name);
		format_cache.cache[to_format] = item;
	}
	is.close();
}

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())));
}

bool tex2tex(string const & infilename, FileName const & outfilename,
             string const & encoding)
{
	if (!tex2lyx(infilename, outfilename, encoding))
		return false;
	string command = quoteName(package().lyx_binary().toFilesystemEncoding());
	if (overwrite_files)
		command += " -f main";
	else
		command += " -f none";
	if (pdflatex)
		command += " -e pdflatex ";
	else
		command += " -e latex ";
	command += quoteName(outfilename.toFilesystemEncoding());
	Systemcall one;
	if (one.startscript(Systemcall::Wait, command) == 0)
		return true;
	cerr << "Error: Running '" << command << "' failed." << endl;
	return false;
}

/// 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;
}

void RCS::retrieve(FileName const & file)
{
	LYXERR(Debug::LYXVC, "LyXVC::RCS: retrieve.\n\t" << file);
	doVCCommandCall("co -q -r " + quoteName(file.toFilesystemEncoding()),
			 FileName());
}

void PreviewLoader::Impl::startLoading(bool wait)
{
	if (pending_.empty() || !pconverter_)
		return;

	// Only start the process off after the buffer is loaded from file.
	if (!buffer_.isFullyLoaded())
		return;

	LYXERR(Debug::GRAPHICS, "PreviewLoader::startLoading()");

	// As used by the LaTeX file and by the resulting image files
	string const directory = buffer_.temppath();

	string const filename_base = unique_filename(directory);

	// Create an InProgress instance to place in the map of all
	// such processes if it starts correctly.
	InProgress inprogress(filename_base, pending_, pconverter_->to);

	// clear pending_, so we're ready to start afresh.
	pending_.clear();

	// Output the LaTeX file.
	FileName const latexfile(filename_base + ".tex");

	// we use the encoding of the buffer
	Encoding const & enc = buffer_.params().encoding();
	ofdocstream of;
	try { of.reset(enc.iconvName()); }
	catch (iconv_codecvt_facet_exception const & e) {
		LYXERR0("Caught iconv exception: " << e.what()
			<< "\nUnable to create LaTeX file: " << latexfile);
		return;
	}

	TexRow texrow;
	otexstream os(of, texrow);
	OutputParams runparams(&enc);
	LaTeXFeatures features(buffer_, buffer_.params(), runparams);

	if (!openFileWrite(of, latexfile))
		return;

	if (!of) {
		LYXERR(Debug::GRAPHICS, "PreviewLoader::startLoading()\n"
					<< "Unable to create LaTeX file\n" << latexfile);
		return;
	}
	of << "\\batchmode\n";
	dumpPreamble(os);
	// handle inputenc etc.
	buffer_.params().writeEncodingPreamble(os, features);
	of << "\n\\begin{document}\n";
	dumpData(of, inprogress.snippets);
	of << "\n\\end{document}\n";
	of.close();
	if (of.fail()) {
		LYXERR(Debug::GRAPHICS, "PreviewLoader::startLoading()\n"
					 << "File was not closed properly.");
		return;
	}

	double const font_scaling_factor = 
		buffer_.isExporting() ? 75.0 * buffer_.params().html_math_img_scale 
			: 0.01 * lyxrc.dpi * lyxrc.zoom * lyxrc.preview_scale_factor;

	// FIXME XHTML 
	// The colors should be customizable.
	ColorCode const bg = buffer_.isExporting() 
	               ? Color_white : PreviewLoader::backgroundColor();
	ColorCode const fg = buffer_.isExporting() 
	               ? Color_black : PreviewLoader::foregroundColor();
	// The conversion command.
	ostringstream cs;
	cs << pconverter_->command
	   << " " << quoteName(latexfile.toFilesystemEncoding())
	   << " --dpi " << int(font_scaling_factor)
	   << " --fg " << theApp()->hexName(fg)
	   << " --bg " << theApp()->hexName(bg);
	// FIXME what about LuaTeX?
	if (buffer_.params().useNonTeXFonts)
		cs << " --latex=xelatex";
	if (buffer_.params().encoding().package() == Encoding::japanese)
		cs << " --latex=platex";
	if (buffer_.params().bibtex_command != "default")
		cs << " --bibtex=" << quoteName(buffer_.params().bibtex_command);
	else if (buffer_.params().encoding().package() == Encoding::japanese)
		cs << " --bibtex=" << quoteName(lyxrc.jbibtex_command);
	else
		cs << " --bibtex=" << quoteName(lyxrc.bibtex_command);
	if (buffer_.params().bufferFormat() == "lilypond-book")
		cs << " --lilypond";

	string const command = libScriptSearch(cs.str());

	if (wait) {
		ForkedCall call(buffer_.filePath());
		int ret = call.startScript(ForkedProcess::Wait, command);
		static int fake = (2^20) + 1;
//.........这里部分代码省略.........

// Returns a local socket already in the "listen" state (or -1 in case
// of error). The first argument is the socket address, the second
// is the length of the queue for connections. If successful, a socket
// special file 'name' will be created in the filesystem.
int listen(FileName const & name, int queue)
{
	int fd; // File descriptor for the socket
	sockaddr_un addr; // Structure that hold the socket address

	// We use 'localname' to fill 'addr'
	string const localname = name.toFilesystemEncoding();
	string::size_type len = localname.size();
	// the field sun_path in sockaddr_un is a char[108]
	if (len > 107) {
		LYXERR0("lyx: Socket address '" << name.absFileName() << "' too long.");
		return -1;
	}
	// Synonims for AF_UNIX are AF_LOCAL and AF_FILE
	addr.sun_family = AF_UNIX;
	localname.copy(addr.sun_path, 107);
	addr.sun_path[len] = '\0';

	// This creates a file descriptor for the socket
	// Synonims for PF_UNIX are PF_LOCAL and PF_FILE
	// For local sockets, the protocol is always 0
	// socket() returns -1 in case of error
	if ((fd = ::socket(PF_UNIX, SOCK_STREAM, 0))== -1) {
		LYXERR0("lyx: Could not create socket descriptor: "
		       << strerror(errno));
		return -1;
	}

	// Set NONBLOCK mode for the file descriptor
	if (::fcntl(fd, F_SETFL, O_NONBLOCK) == -1) {
		LYXERR0("lyx: Could not set NONBLOCK mode for socket descriptor: "
		     << strerror(errno));
		::close(fd);
		return -1;
	}

	// bind() gives the local address 'name' for 'fd', also creating
	// the socket special file in the filesystem. bind() returns -1
	// in case of error
	if ((::bind (fd, reinterpret_cast<sockaddr *>(&addr), SUN_LEN(&addr))) == -1) {
		LYXERR0("lyx: Could not bind address '" << name.absFileName()
		       << "' to socket descriptor: " << strerror(errno));
		::close(fd);
		name.removeFile();
		return -1;
	}

	// Puts the socket in listen state, that is, ready to accept
	// connections. The second parameter of listen() defines the
	// maximum length the queue of pending connections may grow to.
	// It is not a restriction on the number of connections the socket
	// can accept. Returns -1 in case of error
	if (::listen (fd, queue) == -1) {
		LYXERR0("lyx: Could not put socket in 'listen' state: "
		       << strerror(errno));
		::close(fd);
		name.removeFile();
		return -1;
	}

	return fd;
}