2002-06-28 11:22:56 +00:00
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/**
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2003-08-23 00:17:00 +00:00
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* \file GraphicsConverter.C
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2002-09-05 15:14:23 +00:00
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* This file is part of LyX, the document processor.
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* Licence details can be found in the file COPYING.
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2002-02-27 09:59:52 +00:00
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*
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2003-08-23 00:17:00 +00:00
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* \author Angus Leeming
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2002-09-05 11:31:30 +00:00
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*
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2003-08-23 00:17:00 +00:00
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* Full author contact details are available in file CREDITS.
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2002-02-27 09:59:52 +00:00
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*/
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#include <config.h>
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#include "GraphicsConverter.h"
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#include "converter.h"
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#include "debug.h"
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2003-09-05 03:10:30 +00:00
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#include "format.h"
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2002-02-27 09:59:52 +00:00
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#include "support/filetools.h"
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2003-02-25 18:56:09 +00:00
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#include "support/forkedcallqueue.h"
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2005-01-06 16:39:35 +00:00
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#include "support/convert.h"
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2003-05-23 13:54:09 +00:00
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#include "support/lstrings.h"
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2002-06-28 11:22:56 +00:00
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#include "support/lyxlib.h"
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2006-06-30 13:54:01 +00:00
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#include "support/os.h"
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2002-02-27 09:59:52 +00:00
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2002-05-29 16:21:03 +00:00
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#include <boost/bind.hpp>
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2004-07-24 10:55:30 +00:00
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#include <sstream>
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2002-02-27 09:59:52 +00:00
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#include <fstream>
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2003-09-04 00:29:22 +00:00
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namespace support = lyx::support;
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2006-04-08 22:31:11 +00:00
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using support::changeExtension;
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2003-09-04 00:29:22 +00:00
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using support::Forkedcall;
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using support::ForkedCallQueue;
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2006-04-08 22:31:11 +00:00
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using support::libFileSearch;
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using support::libScriptSearch;
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using support::onlyPath;
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using support::onlyFilename;
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using support::quoteName;
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2003-09-04 00:29:22 +00:00
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using support::subst;
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using support::tempName;
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using support::unlink;
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2003-06-30 23:56:22 +00:00
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2002-06-19 10:39:57 +00:00
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using std::endl;
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2002-07-22 20:50:45 +00:00
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using std::ostream;
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2003-09-05 18:02:24 +00:00
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using std::ostringstream;
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2003-10-06 15:43:21 +00:00
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using std::string;
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2002-06-19 10:39:57 +00:00
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2003-09-05 03:10:30 +00:00
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2003-07-04 08:23:23 +00:00
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namespace lyx {
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namespace graphics {
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2002-06-19 10:39:57 +00:00
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2005-01-19 15:03:31 +00:00
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class Converter::Impl : public boost::signals::trackable {
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public:
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2002-06-28 11:22:56 +00:00
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///
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2002-07-17 16:56:42 +00:00
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Impl(string const &, string const &, string const &, string const &);
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2002-06-28 11:22:56 +00:00
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///
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void startConversion();
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/** This method is connected to a signal passed to the forked call
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* class, passing control back here when the conversion is completed.
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* Cleans-up the temporary files, emits the finishedConversion
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* signal and removes the Converter from the list of all processes.
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*/
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2002-10-31 12:42:26 +00:00
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void converted(pid_t pid, int retval);
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2002-06-28 11:22:56 +00:00
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2002-07-17 16:56:42 +00:00
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/** At the end of the conversion process inform the outside world
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* by emitting a signal.
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*/
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2004-09-26 14:19:47 +00:00
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typedef boost::signal<void(bool)> SignalType;
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2002-07-17 16:56:42 +00:00
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///
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SignalType finishedConversion;
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2002-06-28 11:22:56 +00:00
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///
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string script_command_;
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///
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string script_file_;
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///
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string to_file_;
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///
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bool valid_process_;
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///
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bool finished_;
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};
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2002-02-27 09:59:52 +00:00
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2002-07-17 16:56:42 +00:00
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bool Converter::isReachable(string const & from_format_name,
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string const & to_format_name)
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{
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return converters.isReachable(from_format_name, to_format_name);
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}
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2002-06-28 11:22:56 +00:00
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Converter::Converter(string const & from_file, string const & to_file_base,
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string const & from_format, string const & to_format)
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2002-07-17 16:56:42 +00:00
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: pimpl_(new Impl(from_file, to_file_base, from_format, to_format))
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2002-06-28 11:22:56 +00:00
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{}
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2002-02-27 09:59:52 +00:00
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2002-08-06 15:25:50 +00:00
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// Empty d-tor out-of-line to keep boost::scoped_ptr happy.
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2002-06-28 11:22:56 +00:00
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Converter::~Converter()
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{}
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2002-02-27 09:59:52 +00:00
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2002-07-17 16:56:42 +00:00
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void Converter::startConversion() const
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2002-06-28 11:22:56 +00:00
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{
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pimpl_->startConversion();
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}
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2002-03-21 17:27:08 +00:00
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2002-02-27 09:59:52 +00:00
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2002-07-17 16:56:42 +00:00
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boost::signals::connection Converter::connect(slot_type const & slot) const
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2002-02-27 09:59:52 +00:00
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{
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2002-07-17 16:56:42 +00:00
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return pimpl_->finishedConversion.connect(slot);
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2002-02-27 09:59:52 +00:00
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}
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2002-03-21 17:27:08 +00:00
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2002-02-27 09:59:52 +00:00
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2002-06-28 11:22:56 +00:00
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string const & Converter::convertedFile() const
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2002-02-27 09:59:52 +00:00
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{
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2002-06-28 11:22:56 +00:00
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static string const empty;
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return pimpl_->finished_ ? pimpl_->to_file_ : empty;
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2002-02-27 09:59:52 +00:00
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}
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2002-07-17 16:56:42 +00:00
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2003-07-04 08:23:23 +00:00
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} // namespace graphics
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} // namespace lyx
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2002-06-28 11:22:56 +00:00
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//------------------------------
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// Implementation details follow
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//------------------------------
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namespace {
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/** Build the conversion script, returning true if able to build it.
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* The script is output to the ostringstream 'script'.
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*/
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bool build_script(string const & from_file, string const & to_file_base,
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string const & from_format, string const & to_format,
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2002-07-22 20:50:45 +00:00
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ostream & script);
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2002-06-28 11:22:56 +00:00
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} // namespace anon
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2002-02-27 09:59:52 +00:00
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2003-07-04 08:23:23 +00:00
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namespace lyx {
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namespace graphics {
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2002-02-27 09:59:52 +00:00
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2002-07-17 16:56:42 +00:00
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Converter::Impl::Impl(string const & from_file, string const & to_file_base,
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2002-06-28 11:22:56 +00:00
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string const & from_format, string const & to_format)
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2002-07-17 16:56:42 +00:00
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: valid_process_(false), finished_(false)
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2002-02-27 09:59:52 +00:00
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{
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2002-06-28 11:22:56 +00:00
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lyxerr[Debug::GRAPHICS] << "Converter c-tor:\n"
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<< "\tfrom_file: " << from_file
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2002-06-18 20:47:49 +00:00
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<< "\n\tto_file_base: " << to_file_base
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<< "\n\tfrom_format: " << from_format
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<< "\n\tto_format: " << to_format << endl;
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2002-06-28 11:22:56 +00:00
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2002-09-10 16:04:10 +00:00
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// The converted image is to be stored in this file (we do not
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// use ChangeExtension because this is a basename which may
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// nevertheless contain a '.')
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to_file_ = to_file_base + '.' + formats.extension(to_format);
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2002-09-03 11:55:22 +00:00
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2002-02-27 09:59:52 +00:00
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// The conversion commands are stored in a stringstream
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ostringstream script;
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2006-06-30 13:54:01 +00:00
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script << "#!/usr/bin/env python -tt\n"
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2006-06-26 14:17:12 +00:00
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<< "import os, sys\n\n"
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<< "def unlinkNoThrow(file):\n"
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<< " ''' remove a file, do not throw if an error occurs '''\n"
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<< " try:\n"
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<< " os.unlink(file)\n"
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<< " except:\n"
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<< " pass\n\n";
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2002-06-28 11:22:56 +00:00
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bool const success = build_script(from_file, to_file_base,
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from_format, to_format, script);
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2002-03-21 17:27:08 +00:00
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2002-07-22 20:50:45 +00:00
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if (!success) {
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2002-09-03 11:55:22 +00:00
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script_command_ =
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2006-06-30 13:54:01 +00:00
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support::os::python() + ' ' +
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2006-06-26 14:17:12 +00:00
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quoteName(libFileSearch("scripts", "convertDefault.py")) +
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2006-04-05 23:56:29 +00:00
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' ' +
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2006-04-08 22:31:11 +00:00
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quoteName((from_format.empty() ? "" : from_format + ':') + from_file) +
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2005-04-17 18:41:14 +00:00
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' ' +
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2006-04-08 22:31:11 +00:00
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quoteName(to_format + ':' + to_file_);
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2002-09-03 11:55:22 +00:00
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lyxerr[Debug::GRAPHICS]
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2006-06-26 15:13:32 +00:00
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<< "\tNo converter defined! I use convertDefault.py\n\t"
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2002-09-03 11:55:22 +00:00
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<< script_command_ << endl;
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2002-07-22 12:36:41 +00:00
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} else {
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lyxerr[Debug::GRAPHICS] << "\tConversion script:"
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2003-03-10 13:33:39 +00:00
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<< "\n--------------------------------------\n"
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2003-09-15 11:00:00 +00:00
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<< script.str()
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2003-03-10 13:33:39 +00:00
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<< "\n--------------------------------------\n";
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2002-02-27 09:59:52 +00:00
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2002-07-22 12:36:41 +00:00
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// Output the script to file.
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static int counter = 0;
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2006-04-08 22:31:11 +00:00
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script_file_ = onlyPath(to_file_base) + "lyxconvert" +
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2006-06-26 14:17:12 +00:00
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convert<string>(counter++) + ".py";
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2002-02-27 09:59:52 +00:00
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2002-07-22 12:36:41 +00:00
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std::ofstream fs(script_file_.c_str());
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2003-10-22 20:39:30 +00:00
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if (!fs.good()) {
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lyxerr << "Unable to write the conversion script to \""
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<< script_file_ << '\n'
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<< "Please check your directory permissions."
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<< std::endl;
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2002-07-22 12:36:41 +00:00
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return;
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2003-10-22 20:39:30 +00:00
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}
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2002-02-27 09:59:52 +00:00
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2003-09-15 11:00:00 +00:00
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fs << script.str();
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2002-07-22 12:36:41 +00:00
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fs.close();
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2002-02-27 09:59:52 +00:00
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2002-07-22 12:36:41 +00:00
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// The command needed to run the conversion process
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// We create a dummy command for ease of understanding of the
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// list of forked processes.
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2003-03-10 13:33:39 +00:00
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// Note: 'sh ' is absolutely essential, or execvp will fail.
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2006-06-30 13:54:01 +00:00
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script_command_ = support::os::python() + ' ' +
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quoteName(script_file_) + ' ' +
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2006-04-08 22:31:11 +00:00
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quoteName(onlyFilename(from_file)) + ' ' +
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quoteName(to_format);
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2002-07-22 12:36:41 +00:00
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}
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2002-06-28 11:22:56 +00:00
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// All is ready to go
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valid_process_ = true;
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}
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2002-03-21 17:27:08 +00:00
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2002-02-27 09:59:52 +00:00
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2002-06-28 11:22:56 +00:00
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void Converter::Impl::startConversion()
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2002-02-27 09:59:52 +00:00
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{
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2002-06-28 11:22:56 +00:00
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if (!valid_process_) {
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2002-10-31 12:42:26 +00:00
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converted(0, 1);
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2002-06-28 11:22:56 +00:00
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return;
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}
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2002-07-17 16:56:42 +00:00
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2003-06-30 23:56:22 +00:00
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Forkedcall::SignalTypePtr
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2003-02-25 18:56:09 +00:00
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ptr = ForkedCallQueue::get().add(script_command_);
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2002-06-28 11:22:56 +00:00
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2003-02-25 18:56:09 +00:00
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ptr->connect(boost::bind(&Impl::converted, this, _1, _2));
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2002-06-28 11:22:56 +00:00
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}
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2002-10-31 12:42:26 +00:00
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void Converter::Impl::converted(pid_t /* pid */, int retval)
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2002-06-28 11:22:56 +00:00
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{
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if (finished_)
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// We're done already!
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2002-02-27 09:59:52 +00:00
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return;
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2002-06-28 11:22:56 +00:00
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finished_ = true;
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// Clean-up behind ourselves
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2003-06-30 23:56:22 +00:00
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unlink(script_file_);
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2002-06-28 11:22:56 +00:00
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if (retval > 0) {
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2003-06-30 23:56:22 +00:00
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unlink(to_file_);
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2002-06-28 11:22:56 +00:00
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to_file_.erase();
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2002-07-17 16:56:42 +00:00
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finishedConversion(false);
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2002-06-28 11:22:56 +00:00
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} else {
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2002-07-17 16:56:42 +00:00
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finishedConversion(true);
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2002-06-28 11:22:56 +00:00
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}
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2002-02-27 09:59:52 +00:00
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}
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2003-07-04 08:23:23 +00:00
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} // namespace graphics
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} // namespace lyx
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2002-06-28 11:22:56 +00:00
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namespace {
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string const move_file(string const & from_file, string const & to_file)
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{
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if (from_file == to_file)
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return string();
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ostringstream command;
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2006-06-26 14:17:12 +00:00
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command << "fromfile = " << from_file << "\n"
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<< "tofile = " << to_file << "\n\n"
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<< "try:\n"
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<< " os.rename(fromfile, tofile)\n"
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<< "except:\n"
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<< " import shutil\n"
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<< " try:\n"
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<< " shutil.copy(fromfile, tofile)\n"
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<< " except:\n"
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<< " sys.exit(1)\n"
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<< " unlinkNoThrow(fromfile)\n";
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2002-06-28 11:22:56 +00:00
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2003-09-15 11:00:00 +00:00
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return command.str();
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2002-06-28 11:22:56 +00:00
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}
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2002-02-27 09:59:52 +00:00
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2002-07-22 20:50:45 +00:00
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2006-06-26 14:17:12 +00:00
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/*
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A typical script looks like:
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2006-06-30 13:54:01 +00:00
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#!/usr/bin/env python -tt
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2006-06-26 14:17:12 +00:00
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import os, sys
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def unlinkNoThrow(file):
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''' remove a file, do not throw if error occurs '''
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try:
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os.unlink(file)
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except:
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pass
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infile = '/home/username/Figure3a.eps'
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infile_base = '/home/username/Figure3a'
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outfile = '/tmp/lyx_tmpdir12992hUwBqt/gconvert0129929eUBPm.pdf'
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if os.system(r'epstopdf ' + '"' + infile + '"' + ' --output ' + '"' + outfile + '"' + '') != 0:
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unlinkNoThrow(outfile)
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sys.exit(1)
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if not os.path.isfile(outfile):
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if os.path.isfile(outfile + '.0'):
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os.rename(outfile + '.0', outfile)
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import glob
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for file in glob.glob(outfile + '.?'):
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unlinkNoThrow(file)
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else:
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sys.exit(1)
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fromfile = outfile
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tofile = '/tmp/lyx_tmpdir12992hUwBqt/Figure3a129927ByaCl.ppm'
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try:
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os.rename(fromfile, tofile)
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except:
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import shutil
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try:
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shutil.copy(fromfile, tofile)
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except:
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sys.exit(1)
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unlinkNoThrow(fromfile)
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*/
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2002-06-28 11:22:56 +00:00
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bool build_script(string const & from_file,
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string const & to_file_base,
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string const & from_format,
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string const & to_format,
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2002-07-22 20:50:45 +00:00
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ostream & script)
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2002-02-27 09:59:52 +00:00
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{
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2002-06-28 11:22:56 +00:00
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lyxerr[Debug::GRAPHICS] << "build_script ... ";
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2002-02-27 09:59:52 +00:00
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typedef Converters::EdgePath EdgePath;
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2006-01-19 21:18:25 +00:00
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if (from_format.empty())
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return false;
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2002-09-10 16:04:10 +00:00
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// we do not use ChangeExtension because this is a basename
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// which may nevertheless contain a '.'
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string const to_file = to_file_base + '.'
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+ formats.extension(to_format);
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2002-02-27 09:59:52 +00:00
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if (from_format == to_format) {
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2006-04-08 22:31:11 +00:00
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script << move_file(quoteName(from_file), quoteName(to_file));
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2002-06-18 20:47:49 +00:00
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lyxerr[Debug::GRAPHICS] << "ready (from == to)" << endl;
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2002-02-27 09:59:52 +00:00
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return true;
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}
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EdgePath edgepath = converters.getPath(from_format, to_format);
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if (edgepath.empty()) {
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2002-06-18 20:47:49 +00:00
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lyxerr[Debug::GRAPHICS] << "ready (edgepath.empty())" << endl;
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2002-02-27 09:59:52 +00:00
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return false;
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}
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// Create a temporary base file-name for all intermediate steps.
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// Remember to remove the temp file because we only want the name...
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static int counter = 0;
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2005-01-06 15:40:49 +00:00
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string const tmp = "gconvert" + convert<string>(counter++);
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2003-06-30 23:56:22 +00:00
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string const to_base = tempName(string(), tmp);
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unlink(to_base);
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2002-02-27 09:59:52 +00:00
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string outfile = from_file;
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// The conversion commands may contain these tokens that need to be
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// changed to infile, infile_base, outfile respectively.
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string const token_from("$$i");
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string const token_base("$$b");
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string const token_to("$$o");
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EdgePath::const_iterator it = edgepath.begin();
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EdgePath::const_iterator end = edgepath.end();
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2002-07-17 16:56:42 +00:00
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2002-02-27 09:59:52 +00:00
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for (; it != end; ++it) {
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2002-06-28 11:22:56 +00:00
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::Converter const & conv = converters.get(*it);
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2002-02-27 09:59:52 +00:00
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// Build the conversion command
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string const infile = outfile;
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2006-04-08 22:31:11 +00:00
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string const infile_base = changeExtension(infile, string());
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outfile = changeExtension(to_base, conv.To->extension());
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2002-02-27 09:59:52 +00:00
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// Store these names in the shell script
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2006-06-26 14:17:12 +00:00
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script << "infile = " << quoteName(infile) << '\n'
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<< "infile_base = " << quoteName(infile_base) << '\n'
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<< "outfile = " << quoteName(outfile) << '\n';
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2002-02-27 09:59:52 +00:00
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string command = conv.command;
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2006-06-26 14:17:12 +00:00
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command = subst(command, token_from, "' + '\"' + infile + '\"' + '");
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command = subst(command, token_base, "' + '\"' + infile_base + '\"' + '");
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command = subst(command, token_to, "' + '\"' + outfile + '\"' + '");
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2006-04-08 22:31:11 +00:00
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command = libScriptSearch(command);
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2002-02-27 09:59:52 +00:00
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// Store in the shell script
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2006-06-26 14:17:12 +00:00
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script << "\nif os.system(r'" << command << "') != 0:\n";
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2002-02-27 09:59:52 +00:00
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2002-03-21 17:27:08 +00:00
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// Test that this was successful. If not, remove
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2002-02-27 09:59:52 +00:00
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// ${outfile} and exit the shell script
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2006-06-26 14:17:12 +00:00
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script << " unlinkNoThrow(outfile)\n"
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<< " sys.exit(1)\n\n";
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2002-02-27 09:59:52 +00:00
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// Test that the outfile exists.
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// ImageMagick's convert will often create ${outfile}.0,
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// ${outfile}.1.
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// If this occurs, move ${outfile}.0 to ${outfile}
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2006-06-26 14:17:12 +00:00
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// and delete ${outfile}.? (ignore errors)
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script << "if not os.path.isfile(outfile):\n"
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<< " if os.path.isfile(outfile + '.0'):\n"
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<< " os.rename(outfile + '.0', outfile)\n"
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<< " import glob\n"
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<< " for file in glob.glob(outfile + '.?'):\n"
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<< " unlinkNoThrow(file)\n"
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<< " else:\n"
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<< " sys.exit(1)\n\n";
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2002-02-27 09:59:52 +00:00
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// Delete the infile, if it isn't the original, from_file.
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if (infile != from_file) {
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2006-06-26 14:17:12 +00:00
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script << "unlinkNoThrow(infile)\n\n";
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2002-02-27 09:59:52 +00:00
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}
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}
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// Move the final outfile to to_file
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2006-06-26 14:17:12 +00:00
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script << move_file("outfile", quoteName(to_file));
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2002-06-18 20:47:49 +00:00
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lyxerr[Debug::GRAPHICS] << "ready!" << endl;
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2002-02-27 09:59:52 +00:00
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return true;
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}
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2002-07-17 16:56:42 +00:00
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2002-06-28 11:22:56 +00:00
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} // namespace anon
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