2002-06-28 11:22:56 +00:00
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/**
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* \file GraphicsConverter.C
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* Copyright 2002 the LyX Team
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* Read the file COPYING
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2002-02-27 09:59:52 +00:00
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*
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2002-07-15 10:19:45 +00:00
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* \author Angus Leeming <leeming@lyx.org>
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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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#ifdef __GNUG__
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#pragma implementation
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#endif
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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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#include "support/filetools.h"
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#include "support/forkedcall.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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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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2002-06-28 11:22:56 +00:00
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#include <boost/signals/trackable.hpp>
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2002-05-29 16:21:03 +00:00
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2002-06-28 11:22:56 +00:00
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#include "Lsstream.h"
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2002-07-22 20:50:45 +00:00
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#include "support/LOstream.h"
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2002-02-27 09:59:52 +00:00
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#include <fstream>
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2002-06-28 11:22:56 +00:00
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#include <sys/types.h> // needed for pid_t
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2002-02-27 09:59:52 +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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2002-06-19 10:39:57 +00:00
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2002-06-28 11:22:56 +00:00
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namespace grfx {
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2002-06-19 10:39:57 +00:00
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2002-06-28 11:22:56 +00:00
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struct Converter::Impl : public boost::signals::trackable {
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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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void converted(string const & cmd, pid_t pid, int retval);
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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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typedef boost::signal1<void, bool> SignalType;
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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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2002-06-28 11:22:56 +00:00
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} // namespace grfx
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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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2002-06-28 11:22:56 +00:00
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namespace grfx {
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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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2002-02-27 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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script << "#!/bin/sh\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 12:36:41 +00:00
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// The converted image is to be stored in this file
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to_file_ = ChangeExtension(to_file_base, formats.extension(to_format));
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2002-07-22 20:50:45 +00:00
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if (!success) {
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2002-07-22 12:36:41 +00:00
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script_file_ = string();
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if (from_format == "lyxpreview") {
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2002-07-22 20:50:45 +00:00
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script_command_ =
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LibFileSearch("scripts", "lyxpreview2xpm.sh")
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2002-07-22 12:36:41 +00:00
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+ " " +from_file + " " + to_file_;
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2002-07-22 20:50:45 +00:00
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lyxerr[Debug::GRAPHICS]
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2002-07-22 12:36:41 +00:00
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<< "\tI use lyxpreview2xpm for the conversion\n\t"
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<< script_command_ << endl;
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2002-07-22 20:50:45 +00:00
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} else {
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script_command_ =
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2002-07-22 12:36:41 +00:00
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LibFileSearch("scripts", "convertDefault.sh") +
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' ' + from_format + ':' + from_file + ' ' +
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to_format + ':' + to_file_;
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2002-07-22 20:50:45 +00:00
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lyxerr[Debug::GRAPHICS]
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2002-07-22 12:36:41 +00:00
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<< "\tNo converter defined! I use convertDefault.sh\n\t"
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<< script_command_ << endl;
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}
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} else {
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lyxerr[Debug::GRAPHICS] << "\tConversion script:"
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2002-06-28 11:22:56 +00:00
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<< "\n--------------------------------------\n"
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2002-07-17 16:56:42 +00:00
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<< script.str().c_str()
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2002-06-28 11:22:56 +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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script_file_ = OnlyPath(to_file_base) + "lyxconvert" +
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tostr(counter++) + ".sh";
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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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if (!fs.good())
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return;
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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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fs << script.str().c_str();
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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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// Note that 'sh ' is absolutely essential, or execvp will fail.
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script_command_ = "sh " + script_file_ + " " +
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OnlyFilename(from_file) + " " + to_format;
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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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converted(string(), 0, 1);
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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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2002-06-28 11:22:56 +00:00
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// Initiate the conversion
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Forkedcall::SignalTypePtr convert_ptr;
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convert_ptr.reset(new Forkedcall::SignalType);
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convert_ptr->connect(
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boost::bind(&Impl::converted, this, _1, _2, _3));
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Forkedcall call;
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int retval = call.startscript(script_command_, convert_ptr);
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if (retval > 0) {
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// Unable to even start the script, so clean-up the mess!
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converted(string(), 0, 1);
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}
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}
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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::converted(string const & /* cmd */,
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pid_t /* pid */, int retval)
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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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lyx::unlink(script_file_);
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if (retval > 0) {
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lyx::unlink(to_file_);
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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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2002-06-28 11:22:56 +00:00
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} // namespace grfx
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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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command << "fromfile=" << from_file << "\n"
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<< "tofile=" << to_file << "\n\n"
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<< "'mv' -f ${fromfile} ${tofile}\n"
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<< "if [ $? -ne 0 ]; then\n"
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<< "\t'cp' -f ${fromfile} ${tofile}\n"
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<< "\tif [ $? -ne 0 ]; then\n"
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<< "\t\texit 1\n"
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<< "\tfi\n"
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<< "\t'rm' -f ${fromfile}\n"
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<< "fi\n";
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return command.str().c_str();
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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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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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string const to_file = ChangeExtension(to_file_base,
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formats.extension(to_format));
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if (from_format == to_format) {
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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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string const tmp = "gconvert" + tostr(counter++);
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string const to_base = lyx::tempName(string(), tmp);
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lyx::unlink(to_base);
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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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|
|
string const infile_base = ChangeExtension(infile, string());
|
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|
|
outfile = ChangeExtension(to_base, conv.To->extension());
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// Store these names in the shell script
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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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|
|
string command = conv.command;
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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}");
|
2002-07-17 17:26:35 +00:00
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|
|
command = LibScriptSearch(command);
|
2002-02-27 09:59:52 +00:00
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|
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|
|
// Store in the shell script
|
|
|
|
script << "\n" << command << "\n\n";
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|
|
|
|
2002-03-21 17:27:08 +00:00
|
|
|
// Test that this was successful. If not, remove
|
2002-02-27 09:59:52 +00:00
|
|
|
// ${outfile} and exit the shell script
|
|
|
|
script << "if [ $? -ne 0 ]; then\n"
|
|
|
|
<< "\t'rm' -f ${outfile}\n"
|
|
|
|
<< "\texit 1\n"
|
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|
|
<< "fi\n\n";
|
|
|
|
|
|
|
|
// Test that the outfile exists.
|
|
|
|
// ImageMagick's convert will often create ${outfile}.0,
|
|
|
|
// ${outfile}.1.
|
|
|
|
// If this occurs, move ${outfile}.0 to ${outfile}
|
|
|
|
// and delete ${outfile}.?
|
|
|
|
script << "if [ ! -f ${outfile} ]; then\n"
|
|
|
|
<< "\tif [ -f ${outfile}.0 ]; then\n"
|
|
|
|
<< "\t\t'mv' -f ${outfile}.0 ${outfile}\n"
|
|
|
|
<< "\t\t'rm' -f ${outfile}.?\n"
|
|
|
|
<< "\telse\n"
|
|
|
|
<< "\t\texit 1\n"
|
|
|
|
<< "\tfi\n"
|
|
|
|
<< "fi\n\n";
|
|
|
|
|
|
|
|
// Delete the infile, if it isn't the original, from_file.
|
|
|
|
if (infile != from_file) {
|
|
|
|
script << "'rm' -f ${infile}\n\n";
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
// Move the final outfile to to_file
|
|
|
|
script << move_file("${outfile}", QuoteName(to_file));
|
2002-06-18 20:47:49 +00:00
|
|
|
lyxerr[Debug::GRAPHICS] << "ready!" << endl;
|
2002-02-27 09:59:52 +00:00
|
|
|
|
|
|
|
return true;
|
|
|
|
}
|
2002-07-17 16:56:42 +00:00
|
|
|
|
2002-06-28 11:22:56 +00:00
|
|
|
} // namespace anon
|