lyx_mirror/src/exporter.C

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/**
* \file exporter.C
* This file is part of LyX, the document processor.
* Licence details can be found in the file COPYING.
*
* \author unknown
* \author Alfredo Braunstein
* \author Lars Gullik Bj<EFBFBD>nnes
* \author Jean Marc Lasgouttes
* \author Angus Leeming
* \author John Levon
* \author Andr<EFBFBD> P<EFBFBD>nitz
*
* Full author contact details are available in file CREDITS.
*/
#include <config.h>
#include "exporter.h"
#include "buffer.h"
#include "buffer_funcs.h"
#include "bufferparams.h"
#include "converter.h"
#include "format.h"
#include "gettext.h"
#include "lyxrc.h"
#include "mover.h"
#include "output_plaintext.h"
#include "outputparams.h"
#include "frontends/Alert.h"
#include "support/filetools.h"
#include "support/lyxlib.h"
#include "support/package.h"
#include <boost/filesystem/operations.hpp>
using lyx::support::addName;
using lyx::support::bformat;
using lyx::support::changeExtension;
using lyx::support::contains;
using lyx::support::makeAbsPath;
using lyx::support::makeDisplayPath;
using lyx::support::onlyFilename;
using lyx::support::onlyPath;
using lyx::support::package;
using lyx::support::prefixIs;
using std::find;
using std::string;
using std::vector;
namespace fs = boost::filesystem;
namespace {
vector<string> const Backends(Buffer const & buffer)
{
vector<string> v;
if (buffer.params().getLyXTextClass().isTeXClassAvailable()) {
v.push_back(bufferFormat(buffer));
// FIXME: Don't hardcode format names here, but use a flag
if (v.back() == "latex")
v.push_back("pdflatex");
}
v.push_back("text");
v.push_back("lyx");
return v;
}
/// ask the user what to do if a file already exists
int checkOverwrite(string const & filename)
{
if (fs::exists(filename)) {
string text = bformat(_("The file %1$s already exists.\n\n"
"Do you want to over-write that file?"),
makeDisplayPath(filename));
return Alert::prompt(_("Over-write file?"),
text, 0, 2,
_("&Over-write"), _("Over-write &all"),
_("&Cancel export"));
}
return 0;
}
enum CopyStatus {
SUCCESS,
FORCE,
CANCEL
};
/** copy file \p sourceFile to \p destFile. If \p force is false, the user
* will be asked before existing files are overwritten.
* \return
* - SUCCESS if this file got copied
* - FORCE if subsequent calls should not ask for confirmation before
* overwriting files anymore.
* - CANCEL if the export should be cancelled
*/
CopyStatus copyFile(string const & format,
string const & sourceFile, string const & destFile,
string const & latexFile, bool force)
{
CopyStatus ret = force ? FORCE : SUCCESS;
// Only copy files that are in our tmp dir, all other files would
// overwrite themselves. This check could be changed to
// boost::filesystem::equivalent(sourceFile, destFile) if export to
// other directories than the document directory is desired.
if (!prefixIs(onlyPath(sourceFile), package().temp_dir()))
return ret;
if (!force) {
switch(checkOverwrite(destFile)) {
case 0:
ret = SUCCESS;
break;
case 1:
ret = FORCE;
break;
default:
return CANCEL;
}
}
Mover const & mover = movers(format);
if (!mover.copy(sourceFile, destFile, latexFile))
Alert::error(_("Couldn't copy file"),
bformat(_("Copying %1$s to %2$s failed."),
makeDisplayPath(sourceFile),
makeDisplayPath(destFile)));
return ret;
}
} //namespace anon
bool Exporter::Export(Buffer * buffer, string const & format,
bool put_in_tempdir, string & result_file)
{
string backend_format;
OutputParams runparams;
runparams.flavor = OutputParams::LATEX;
runparams.linelen = lyxrc.ascii_linelen;
vector<string> backends = Backends(*buffer);
// FIXME: Without this test export to lyx13 would be through
// latex -> lyx -> lyx13, because the first backend below with a
// working conversion path is used. We should replace this test and
// the explicit loop below with a method
// getShortestPath(vector<string> const & from, string const & to)
// which returns the shortest path from one of the formats in 'from'
// to 'to'.
if (format == "lyx13x" && !converters.getPath("lyx", format).empty())
backend_format = "lyx";
else if (find(backends.begin(), backends.end(), format) == backends.end()) {
for (vector<string>::const_iterator it = backends.begin();
it != backends.end(); ++it) {
Graph::EdgePath p = converters.getPath(*it, format);
if (!p.empty()) {
runparams.flavor = converters.getFlavor(p);
backend_format = *it;
break;
}
}
if (backend_format.empty()) {
Alert::error(_("Couldn't export file"),
bformat(_("No information for exporting the format %1$s."),
formats.prettyName(format)));
return false;
}
} else {
backend_format = format;
// FIXME: Don't hardcode format names here, but use a flag
if (backend_format == "pdflatex")
runparams.flavor = OutputParams::PDFLATEX;
}
string filename = buffer->getLatexName(false);
filename = addName(buffer->temppath(), filename);
filename = changeExtension(filename,
formats.extension(backend_format));
// Ascii backend
if (backend_format == "text")
writeFileAscii(*buffer, filename, runparams);
// no backend
else if (backend_format == "lyx")
buffer->writeFile(filename);
// Linuxdoc backend
else if (buffer->isLinuxDoc()) {
runparams.nice = !put_in_tempdir;
buffer->makeLinuxDocFile(filename, runparams);
}
// Docbook backend
else if (buffer->isDocBook()) {
runparams.nice = !put_in_tempdir;
buffer->makeDocBookFile(filename, runparams);
}
// LaTeX backend
else if (backend_format == format) {
runparams.nice = true;
buffer->makeLaTeXFile(filename, string(), runparams);
} else if (!lyxrc.tex_allows_spaces
&& contains(buffer->filePath(), ' ')) {
Alert::error(_("File name error"),
_("The directory path to the document cannot contain spaces."));
return false;
} else {
runparams.nice = false;
buffer->makeLaTeXFile(filename, buffer->filePath(), runparams);
}
if (!converters.convert(buffer, filename, filename,
backend_format, format, result_file))
return false;
if (!put_in_tempdir) {
string const tmp_result_file = result_file;
result_file = changeExtension(buffer->fileName(),
formats.extension(format));
// We need to copy referenced files (e. g. included graphics
// if format == "dvi") to the result dir.
vector<ExportedFile> const files =
runparams.exportdata->externalFiles(format);
string const dest = onlyPath(result_file);
CopyStatus status = SUCCESS;
for (vector<ExportedFile>::const_iterator it = files.begin();
it != files.end() && status != CANCEL; ++it) {
string const fmt =
formats.getFormatFromFile(it->sourceName);
status = copyFile(fmt, it->sourceName,
makeAbsPath(it->exportName, dest),
it->exportName, status == FORCE);
}
if (status == CANCEL) {
buffer->message(_("Document export cancelled."));
} else if (fs::exists(tmp_result_file)) {
// Finally copy the main file
status = copyFile(format, tmp_result_file,
result_file, result_file,
status == FORCE);
buffer->message(bformat(_("Document exported as %1$s "
"to file `%2$s'"),
formats.prettyName(format),
makeDisplayPath(result_file)));
} else {
// This must be a dummy converter like fax (bug 1888)
buffer->message(bformat(_("Document exported as %1$s"),
formats.prettyName(format)));
}
}
return true;
}
bool Exporter::Export(Buffer * buffer, string const & format,
bool put_in_tempdir)
{
string result_file;
return Export(buffer, format, put_in_tempdir, result_file);
}
bool Exporter::preview(Buffer * buffer, string const & format)
{
string result_file;
if (!Export(buffer, format, true, result_file))
return false;
return formats.view(*buffer, result_file, format);
}
bool Exporter::isExportable(Buffer const & buffer, string const & format)
{
vector<string> backends = Backends(buffer);
for (vector<string>::const_iterator it = backends.begin();
it != backends.end(); ++it)
if (converters.isReachable(*it, format))
return true;
return false;
}
vector<Format const *> const
Exporter::getExportableFormats(Buffer const & buffer, bool only_viewable)
{
vector<string> backends = Backends(buffer);
vector<Format const *> result =
converters.getReachable(backends[0], only_viewable, true);
for (vector<string>::const_iterator it = backends.begin() + 1;
it != backends.end(); ++it) {
vector<Format const *> r =
converters.getReachable(*it, only_viewable, false);
result.insert(result.end(), r.begin(), r.end());
}
return result;
}
ExportedFile::ExportedFile(string const & s, string const & e) :
sourceName(s), exportName(e) {}
bool operator==(ExportedFile const & f1, ExportedFile const & f2)
{
return f1.sourceName == f2.sourceName &&
f1.exportName == f2.exportName;
}
void ExportData::addExternalFile(string const & format,
string const & sourceName,
string const & exportName)
{
BOOST_ASSERT(lyx::support::absolutePath(sourceName));
// Make sure that we have every file only once, otherwise copyFile()
// would ask several times if it should overwrite a file.
vector<ExportedFile> & files = externalfiles[format];
ExportedFile file(sourceName, exportName);
if (find(files.begin(), files.end(), file) == files.end())
files.push_back(file);
}
void ExportData::addExternalFile(string const & format,
string const & sourceName)
{
addExternalFile(format, sourceName, onlyFilename(sourceName));
}
vector<ExportedFile> const
ExportData::externalFiles(string const & format) const
{
FileMap::const_iterator cit = externalfiles.find(format);
if (cit != externalfiles.end())
return cit->second;
return vector<ExportedFile>();
}