lyx_mirror/src/Converter.h
2020-02-28 01:40:30 -05:00

267 lines
7.4 KiB
C++

// -*- C++ -*-
/**
* \file Converter.h
* This file is part of LyX, the document processor.
* Licence details can be found in the file COPYING.
*
* \author Dekel Tsur
*
* Full author contact details are available in file CREDITS.
*/
#ifndef CONVERTER_H
#define CONVERTER_H
#include "Graph.h"
#include "OutputParams.h"
#include "support/trivstring.h"
#include <vector>
#include <set>
#include <string>
namespace lyx {
namespace support { class FileName; }
class Buffer;
class ErrorList;
class Format;
class Formats;
class ConversionException : public std::exception {
public:
ConversionException() {}
virtual ~ConversionException() throw() {}
virtual const char * what() const throw()
{ return "Exception caught in conversion routine!"; }
};
typedef std::vector<Format const *> FormatList;
///
class Converter {
public:
///
Converter(std::string const & f, std::string const & t, std::string const & c,
std::string const & l);
///
void readFlags();
///
std::string const from() const { return from_; }
///
std::string const to() const { return to_; }
///
std::string const command() const { return command_; }
///
void setCommand(std::string const & command) { command_ = command; }
///
std::string const flags() const { return flags_; }
///
void setFlags(std::string const & flags) { flags_ = flags; }
///
Format const * From() const { return From_; }
///
void setFrom(Format const * From) { From_ = From; }
///
void setTo(Format const * To) { To_ = To; }
///
Format const * To() const { return To_; }
///
bool latex() const { return latex_; }
///
std::string const latex_flavor() const { return latex_flavor_; }
///
bool xml() const { return xml_; }
///
bool need_aux() const { return need_aux_; }
/// Return whether or not the needauth option is set for this converter
bool need_auth() const { return need_auth_; }
///
bool nice() const { return nice_; }
///
std::string const result_dir() const { return result_dir_; }
///
std::string const result_file() const { return result_file_; }
///
std::string const parselog() const { return parselog_; }
///
std::string const hyperref_driver() const { return href_driver_; }
private:
///
trivstring from_;
///
trivstring to_;
///
trivstring command_;
///
trivstring flags_;
///
Format const * From_;
///
Format const * To_;
/// The converter is latex or its derivatives
bool latex_;
/// The latex derivate
trivstring latex_flavor_;
/// The converter is xml
bool xml_;
/// This converter needs the .aux files
bool need_aux_;
/// we need a "nice" file from the backend, c.f. OutputParams.nice.
bool nice_;
/// Use of this converter needs explicit user authorization
bool need_auth_;
/// If the converter put the result in a directory, then result_dir
/// is the name of the directory
trivstring result_dir_;
/// If the converter put the result in a directory, then result_file
/// is the name of the main file in that directory
trivstring result_file_;
/// Command to convert the program output to a LaTeX log file format
trivstring parselog_;
/// The hyperref driver
trivstring href_driver_;
};
///
class Converters {
public:
///
typedef std::vector<Converter> ConverterList;
///
typedef ConverterList::const_iterator const_iterator;
/// Return values for converter runs
enum RetVal {
SUCCESS = 0,
FAILURE = 1,
KILLED = 1000
};
///
Converter const & get(int i) const { return converterlist_[i]; }
///
Converter const * getConverter(std::string const & from,
std::string const & to) const;
///
int getNumber(std::string const & from, std::string const & to) const;
///
void add(std::string const & from, std::string const & to,
std::string const & command, std::string const & flags);
//
void erase(std::string const & from, std::string const & to);
///
FormatList const
getReachableTo(std::string const & target, bool clear_visited);
///
FormatList const
getReachable(std::string const & from, bool only_viewable,
bool clear_visited,
std::set<std::string> const & excludes = std::set<std::string>());
FormatList importableFormats();
FormatList exportableFormats(bool only_viewable);
std::vector<std::string> loaders() const;
std::vector<std::string> savers() const;
/// Does a conversion path from format \p from to format \p to exist?
bool isReachable(std::string const & from, std::string const & to);
///
Graph::EdgePath getPath(std::string const & from, std::string const & to);
///
OutputParams::FLAVOR getFlavor(Graph::EdgePath const & path,
Buffer const * buffer = nullptr);
///
std::string getHyperrefDriver(Graph::EdgePath const & path);
/// Flags for converting files
enum ConversionFlags {
/// No special flags
none = 0,
/// Use the default converter if no converter is defined
try_default = 1 << 0,
/// Get the converted file from cache if possible
try_cache = 1 << 1
};
///
RetVal convert(Buffer const * buffer,
support::FileName const & from_file, support::FileName const & to_file,
support::FileName const & orig_from,
std::string const & from_format, std::string const & to_format,
ErrorList & errorList, int conversionflags = none);
///
void update(Formats const & formats);
///
void updateLast(Formats const & formats);
///
bool formatIsUsed(std::string const & format);
///
const_iterator begin() const { return converterlist_.begin(); }
///
const_iterator end() const { return converterlist_.end(); }
///
void buildGraph();
/// Check whether converter conv is authorized to be run for elements
/// within document doc_fname.
/// The check succeeds for safe converters, whilst for those potentially
/// able to execute arbitrary code, tagged with the 'needauth' option,
/// authorization is: always denied if lyxrc.use_converter_needauth_forbidden
/// is enabled; always allowed if the lyxrc.use_converter_needauth
/// is disabled; user is prompted otherwise.
/// However, if use_shell_escape is true and a LaTeX backend is
/// going to be executed, both lyxrc.use_converter_needauth and
/// lyxrc.use_converter_needauth_forbidden are ignored, because in
/// this case the backend has to be executed and LyX will add the
/// -shell-escape option, so that user consent is always needed.
bool checkAuth(Converter const & conv, std::string const & doc_fname,
bool use_shell_escape = false);
private:
///
FormatList const
intToFormat(std::vector<int> const & input);
///
bool scanLog(Buffer const & buffer, std::string const & command,
support::FileName const & filename, ErrorList & errorList);
///
RetVal runLaTeX(Buffer const & buffer, std::string const & command,
OutputParams const &, ErrorList & errorList);
///
ConverterList converterlist_;
///
trivstring latex_command_;
///
trivstring dvilualatex_command_;
///
trivstring lualatex_command_;
///
trivstring pdflatex_command_;
///
trivstring xelatex_command_;
/// If \p from = /path/file.ext and \p to = /path2/file2.ext2 then
/// this method moves each /path/file*.ext file to /path2/file2*.ext2
bool move(std::string const & fmt,
support::FileName const & from, support::FileName const & to,
bool copy);
///
Graph G_;
};
/// The global instance.
/// Implementation is in LyX.cpp.
extern Converters & theConverters();
/// The global copy after reading lyxrc.defaults.
/// Implementation is in LyX.cpp.
extern Converters & theSystemConverters();
} // namespace lyx
#endif //CONVERTER_H