lyx_mirror/src/Converter.cpp
André Pönitz 93bd28f040 dissolve Importer 'class' to LyXFunc/Converter
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@21195 a592a061-630c-0410-9148-cb99ea01b6c8
2007-10-25 06:09:38 +00:00

735 lines
20 KiB
C++

/**
* \file Converter.cpp
* 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.
*/
#include <config.h>
#include "Converter.h"
#include "ConverterCache.h"
#include "Buffer.h"
#include "buffer_funcs.h"
#include "BufferParams.h"
#include "debug.h"
#include "ErrorList.h"
#include "Format.h"
#include "gettext.h"
#include "Language.h"
#include "LaTeX.h"
#include "Mover.h"
#include "frontends/alert.h"
#include "support/filetools.h"
#include "support/lyxlib.h"
#include "support/os.h"
#include "support/Package.h"
#include "support/Path.h"
#include "support/Systemcall.h"
using std::endl;
using std::find_if;
using std::string;
using std::vector;
using std::distance;
namespace lyx {
using support::addName;
using support::bformat;
using support::changeExtension;
using support::compare_ascii_no_case;
using support::contains;
using support::dirList;
using support::FileName;
using support::getExtension;
using support::libFileSearch;
using support::libScriptSearch;
using support::makeAbsPath;
using support::makeRelPath;
using support::onlyFilename;
using support::onlyPath;
using support::package;
using support::prefixIs;
using support::quoteName;
using support::removeExtension;
using support::split;
using support::subst;
using support::Systemcall;
namespace Alert = lyx::frontend::Alert;
namespace {
string const token_from("$$i");
string const token_base("$$b");
string const token_to("$$o");
string const token_path("$$p");
string const add_options(string const & command, string const & options)
{
string head;
string const tail = split(command, head, ' ');
return head + ' ' + options + ' ' + tail;
}
string const dvipdfm_options(BufferParams const & bp)
{
string result;
if (bp.papersize != PAPER_CUSTOM) {
string const paper_size = bp.paperSizeName();
if (paper_size != "b5" && paper_size != "foolscap")
result = "-p "+ paper_size;
if (bp.orientation == ORIENTATION_LANDSCAPE)
result += " -l";
}
return result;
}
class ConverterEqual : public std::binary_function<string, string, bool> {
public:
ConverterEqual(string const & from, string const & to)
: from_(from), to_(to) {}
bool operator()(Converter const & c) const {
return c.from == from_ && c.to == to_;
}
private:
string const from_;
string const to_;
};
} // namespace anon
Converter::Converter(string const & f, string const & t,
string const & c, string const & l)
: from(f), to(t), command(c), flags(l),
From(0), To(0), latex(false), xml(false),
need_aux(false)
{}
void Converter::readFlags()
{
string flag_list(flags);
while (!flag_list.empty()) {
string flag_name, flag_value;
flag_list = split(flag_list, flag_value, ',');
flag_value = split(flag_value, flag_name, '=');
if (flag_name == "latex")
latex = true;
else if (flag_name == "xml")
xml = true;
else if (flag_name == "needaux")
need_aux = true;
else if (flag_name == "resultdir")
result_dir = (flag_value.empty())
? token_base : flag_value;
else if (flag_name == "resultfile")
result_file = flag_value;
else if (flag_name == "parselog")
parselog = flag_value;
}
if (!result_dir.empty() && result_file.empty())
result_file = "index." + formats.extension(to);
//if (!contains(command, token_from))
// latex = true;
}
bool operator<(Converter const & a, Converter const & b)
{
// use the compare_ascii_no_case instead of compare_no_case,
// because in turkish, 'i' is not the lowercase version of 'I',
// and thus turkish locale breaks parsing of tags.
int const i = compare_ascii_no_case(a.From->prettyname(),
b.From->prettyname());
if (i == 0)
return compare_ascii_no_case(a.To->prettyname(),
b.To->prettyname()) < 0;
else
return i < 0;
}
Converter const * Converters::getConverter(string const & from,
string const & to) const
{
ConverterList::const_iterator const cit =
find_if(converterlist_.begin(), converterlist_.end(),
ConverterEqual(from, to));
if (cit != converterlist_.end())
return &(*cit);
else
return 0;
}
int Converters::getNumber(string const & from, string const & to) const
{
ConverterList::const_iterator const cit =
find_if(converterlist_.begin(), converterlist_.end(),
ConverterEqual(from, to));
if (cit != converterlist_.end())
return distance(converterlist_.begin(), cit);
else
return -1;
}
void Converters::add(string const & from, string const & to,
string const & command, string const & flags)
{
formats.add(from);
formats.add(to);
ConverterList::iterator it = find_if(converterlist_.begin(),
converterlist_.end(),
ConverterEqual(from , to));
Converter converter(from, to, command, flags);
if (it != converterlist_.end() && !flags.empty() && flags[0] == '*') {
converter = *it;
converter.command = command;
converter.flags = flags;
}
converter.readFlags();
if (converter.latex && (latex_command_.empty() || to == "dvi"))
latex_command_ = subst(command, token_from, "");
// If we have both latex & pdflatex, we set latex_command to latex.
// The latex_command is used to update the .aux file when running
// a converter that uses it.
if (it == converterlist_.end()) {
converterlist_.push_back(converter);
} else {
converter.From = it->From;
converter.To = it->To;
*it = converter;
}
}
void Converters::erase(string const & from, string const & to)
{
ConverterList::iterator const it =
find_if(converterlist_.begin(),
converterlist_.end(),
ConverterEqual(from, to));
if (it != converterlist_.end())
converterlist_.erase(it);
}
// This method updates the pointers From and To in all the converters.
// The code is not very efficient, but it doesn't matter as the number
// of formats and converters is small.
// Furthermore, this method is called only on startup, or after
// adding/deleting a format in FormPreferences (the latter calls can be
// eliminated if the formats in the Formats class are stored using a map or
// a list (instead of a vector), but this will cause other problems).
void Converters::update(Formats const & formats)
{
ConverterList::iterator it = converterlist_.begin();
ConverterList::iterator end = converterlist_.end();
for (; it != end; ++it) {
it->From = formats.getFormat(it->from);
it->To = formats.getFormat(it->to);
}
}
// This method updates the pointers From and To in the last converter.
// It is called when adding a new converter in FormPreferences
void Converters::updateLast(Formats const & formats)
{
if (converterlist_.begin() != converterlist_.end()) {
ConverterList::iterator it = converterlist_.end() - 1;
it->From = formats.getFormat(it->from);
it->To = formats.getFormat(it->to);
}
}
void Converters::sort()
{
std::sort(converterlist_.begin(), converterlist_.end());
}
OutputParams::FLAVOR Converters::getFlavor(Graph::EdgePath const & path)
{
for (Graph::EdgePath::const_iterator cit = path.begin();
cit != path.end(); ++cit) {
Converter const & conv = converterlist_[*cit];
if (conv.latex)
if (contains(conv.to, "pdf"))
return OutputParams::PDFLATEX;
if (conv.xml)
return OutputParams::XML;
}
return OutputParams::LATEX;
}
bool Converters::convert(Buffer const * buffer,
FileName const & from_file, FileName const & to_file,
FileName const & orig_from,
string const & from_format, string const & to_format,
ErrorList & errorList, int conversionflags)
{
if (from_format == to_format)
return move(from_format, from_file, to_file, false);
if ((conversionflags & try_cache) &&
ConverterCache::get().inCache(orig_from, to_format))
return ConverterCache::get().copy(orig_from, to_format, to_file);
Graph::EdgePath edgepath = getPath(from_format, to_format);
if (edgepath.empty()) {
if (conversionflags & try_default) {
// if no special converter defined, then we take the
// default one from ImageMagic.
string const from_ext = from_format.empty() ?
getExtension(from_file.absFilename()) :
formats.extension(from_format);
string const to_ext = formats.extension(to_format);
string const command =
support::os::python() + ' ' +
quoteName(libFileSearch("scripts", "convertDefault.py").toFilesystemEncoding()) +
' ' +
quoteName(from_ext + ':' + from_file.toFilesystemEncoding()) +
' ' +
quoteName(to_ext + ':' + to_file.toFilesystemEncoding());
LYXERR(Debug::FILES)
<< "No converter defined! "
"I use convertDefault.py:\n\t"
<< command << endl;
Systemcall one;
one.startscript(Systemcall::Wait, command);
if (to_file.isFileReadable()) {
if (conversionflags & try_cache)
ConverterCache::get().add(orig_from,
to_format, to_file);
return true;
}
}
Alert::error(_("Cannot convert file"),
bformat(_("No information for converting %1$s "
"format files to %2$s.\n"
"Define a converter in the preferences."),
from_ascii(from_format), from_ascii(to_format)));
return false;
}
// buffer is only invalid for importing, and then runparams is not
// used anyway.
OutputParams runparams(buffer ? &buffer->params().encoding() : 0);
runparams.flavor = getFlavor(edgepath);
// Some converters (e.g. lilypond) can only output files to the
// current directory, so we need to change the current directory.
// This has the added benefit that all other files that may be
// generated by the converter are deleted when LyX closes and do not
// clutter the real working directory.
string const path(onlyPath(from_file.absFilename()));
// Prevent the compiler from optimizing away p
FileName pp(path);
support::Path p(pp);
// empty the error list before any new conversion takes place.
errorList.clear();
bool run_latex = false;
string from_base = changeExtension(from_file.absFilename(), "");
string to_base = changeExtension(to_file.absFilename(), "");
FileName infile;
FileName outfile = from_file;
for (Graph::EdgePath::const_iterator cit = edgepath.begin();
cit != edgepath.end(); ++cit) {
Converter const & conv = converterlist_[*cit];
bool dummy = conv.To->dummy() && conv.to != "program";
if (!dummy) {
LYXERR(Debug::FILES) << "Converting from "
<< conv.from << " to " << conv.to << endl;
}
infile = outfile;
outfile = FileName(conv.result_dir.empty()
? changeExtension(from_file.absFilename(), conv.To->extension())
: addName(subst(conv.result_dir,
token_base, from_base),
subst(conv.result_file,
token_base, onlyFilename(from_base))));
// if input and output files are equal, we use a
// temporary file as intermediary (JMarc)
FileName real_outfile;
if (outfile == infile) {
real_outfile = infile;
// when importing, a buffer does not necessarily exist
if (buffer)
outfile = FileName(addName(buffer->temppath(), "tmpfile.out"));
else
outfile = FileName(addName(package().temp_dir().absFilename(),
"tmpfile.out"));
}
if (conv.latex) {
run_latex = true;
string const command = subst(conv.command, token_from, "");
LYXERR(Debug::FILES) << "Running " << command << endl;
if (!runLaTeX(*buffer, command, runparams, errorList))
return false;
} else {
if (conv.need_aux && !run_latex
&& !latex_command_.empty()) {
LYXERR(Debug::FILES)
<< "Running " << latex_command_
<< " to update aux file"<< endl;
runLaTeX(*buffer, latex_command_, runparams, errorList);
}
// FIXME UNICODE
string const infile2 =
to_utf8(makeRelPath(from_utf8(infile.absFilename()), from_utf8(path)));
string const outfile2 =
to_utf8(makeRelPath(from_utf8(outfile.absFilename()), from_utf8(path)));
string command = conv.command;
command = subst(command, token_from, quoteName(infile2));
command = subst(command, token_base, quoteName(from_base));
command = subst(command, token_to, quoteName(outfile2));
command = libScriptSearch(command);
if (!conv.parselog.empty())
command += " 2> " + quoteName(infile2 + ".out");
if (conv.from == "dvi" && conv.to == "ps")
command = add_options(command,
buffer->params().dvips_options());
else if (conv.from == "dvi" && prefixIs(conv.to, "pdf"))
command = add_options(command,
dvipdfm_options(buffer->params()));
LYXERR(Debug::FILES) << "Calling " << command << endl;
if (buffer)
buffer->message(_("Executing command: ")
+ from_utf8(command));
Systemcall one;
int res;
if (dummy) {
res = one.startscript(Systemcall::DontWait,
to_filesystem8bit(from_utf8(command)));
// We're not waiting for the result, so we can't do anything
// else here.
} else {
res = one.startscript(Systemcall::Wait,
to_filesystem8bit(from_utf8(command)));
if (!real_outfile.empty()) {
Mover const & mover = getMover(conv.to);
if (!mover.rename(outfile, real_outfile))
res = -1;
else
LYXERR(Debug::FILES)
<< "renaming file " << outfile
<< " to " << real_outfile
<< endl;
// Finally, don't forget to tell any future
// converters to use the renamed file...
outfile = real_outfile;
}
if (!conv.parselog.empty()) {
string const logfile = infile2 + ".log";
string const script = libScriptSearch(conv.parselog);
string const command2 = script +
" < " + quoteName(infile2 + ".out") +
" > " + quoteName(logfile);
one.startscript(Systemcall::Wait,
to_filesystem8bit(from_utf8(command2)));
if (!scanLog(*buffer, command, makeAbsPath(logfile, path), errorList))
return false;
}
}
if (res) {
if (conv.to == "program") {
Alert::error(_("Build errors"),
_("There were errors during the build process."));
} else {
// FIXME: this should go out of here. For example, here we cannot say if
// it is a document (.lyx) or something else. Same goes for elsewhere.
Alert::error(_("Cannot convert file"),
bformat(_("An error occurred whilst running %1$s"),
from_utf8(command.substr(0, 50))));
}
return false;
}
}
}
Converter const & conv = converterlist_[edgepath.back()];
if (conv.To->dummy())
return true;
if (!conv.result_dir.empty()) {
// The converter has put the file(s) in a directory.
// In this case we ignore the given to_file.
if (from_base != to_base) {
string const from = subst(conv.result_dir,
token_base, from_base);
string const to = subst(conv.result_dir,
token_base, to_base);
Mover const & mover = getMover(conv.from);
if (!mover.rename(FileName(from), FileName(to))) {
Alert::error(_("Cannot convert file"),
bformat(_("Could not move a temporary directory from %1$s to %2$s."),
from_utf8(from), from_utf8(to)));
return false;
}
}
return true;
} else {
if (conversionflags & try_cache)
ConverterCache::get().add(orig_from, to_format, outfile);
return move(conv.to, outfile, to_file, conv.latex);
}
}
bool Converters::move(string const & fmt,
FileName const & from, FileName const & to, bool copy)
{
if (from == to)
return true;
bool no_errors = true;
string const path = onlyPath(from.absFilename());
string const base = onlyFilename(removeExtension(from.absFilename()));
string const to_base = removeExtension(to.absFilename());
string const to_extension = getExtension(to.absFilename());
vector<FileName> const files = dirList(FileName(path),
getExtension(from.absFilename()));
for (vector<FileName>::const_iterator it = files.begin();
it != files.end(); ++it) {
string const from2 = it->absFilename();
string const file2 = onlyFilename(from2);
if (prefixIs(file2, base)) {
string const to2 = changeExtension(
to_base + file2.substr(base.length()),
to_extension);
LYXERR(Debug::FILES) << "moving " << from2
<< " to " << to2 << endl;
Mover const & mover = getMover(fmt);
bool const moved = copy
? mover.copy(*it, FileName(to2))
: mover.rename(*it, FileName(to2));
if (!moved && no_errors) {
Alert::error(_("Cannot convert file"),
bformat(copy ?
_("Could not copy a temporary file from %1$s to %2$s.") :
_("Could not move a temporary file from %1$s to %2$s."),
from_utf8(from2), from_utf8(to2)));
no_errors = false;
}
}
}
return no_errors;
}
bool Converters::formatIsUsed(string const & format)
{
ConverterList::const_iterator cit = converterlist_.begin();
ConverterList::const_iterator end = converterlist_.end();
for (; cit != end; ++cit) {
if (cit->from == format || cit->to == format)
return true;
}
return false;
}
bool Converters::scanLog(Buffer const & buffer, string const & /*command*/,
FileName const & filename, ErrorList & errorList)
{
OutputParams runparams(0);
runparams.flavor = OutputParams::LATEX;
LaTeX latex("", runparams, filename);
TeXErrors terr;
int const result = latex.scanLogFile(terr);
if (result & LaTeX::ERRORS)
buffer.bufferErrors(terr, errorList);
return true;
}
namespace {
class ShowMessage
: public boost::signals::trackable {
public:
ShowMessage(Buffer const & b) : buffer_(b) {}
void operator()(docstring const & msg) const { buffer_.message(msg); }
private:
Buffer const & buffer_;
};
}
bool Converters::runLaTeX(Buffer const & buffer, string const & command,
OutputParams const & runparams, ErrorList & errorList)
{
buffer.setBusy(true);
buffer.message(_("Running LaTeX..."));
runparams.document_language = buffer.params().language->babel();
// do the LaTeX run(s)
string const name = buffer.latexName();
LaTeX latex(command, runparams, FileName(makeAbsPath(name)));
TeXErrors terr;
ShowMessage show(buffer);
latex.message.connect(show);
int const result = latex.run(terr);
if (result & LaTeX::ERRORS)
buffer.bufferErrors(terr, errorList);
// check return value from latex.run().
if ((result & LaTeX::NO_LOGFILE)) {
docstring const str =
bformat(_("LaTeX did not run successfully. "
"Additionally, LyX could not locate "
"the LaTeX log %1$s."), from_utf8(name));
Alert::error(_("LaTeX failed"), str);
} else if (result & LaTeX::NO_OUTPUT) {
Alert::warning(_("Output is empty"),
_("An empty output file was generated."));
}
buffer.setBusy(false);
int const ERROR_MASK =
LaTeX::NO_LOGFILE |
LaTeX::ERRORS |
LaTeX::NO_OUTPUT;
return (result & ERROR_MASK) == 0;
}
void Converters::buildGraph()
{
G_.init(formats.size());
ConverterList::iterator beg = converterlist_.begin();
ConverterList::iterator const end = converterlist_.end();
for (ConverterList::iterator it = beg; it != end ; ++it) {
int const s = formats.getNumber(it->from);
int const t = formats.getNumber(it->to);
G_.addEdge(s,t);
}
}
std::vector<Format const *> const
Converters::intToFormat(std::vector<int> const & input)
{
vector<Format const *> result(input.size());
vector<int>::const_iterator it = input.begin();
vector<int>::const_iterator const end = input.end();
vector<Format const *>::iterator rit = result.begin();
for ( ; it != end; ++it, ++rit) {
*rit = &formats.get(*it);
}
return result;
}
vector<Format const *> const
Converters::getReachableTo(string const & target, bool const clear_visited)
{
vector<int> const & reachablesto =
G_.getReachableTo(formats.getNumber(target), clear_visited);
return intToFormat(reachablesto);
}
vector<Format const *> const
Converters::getReachable(string const & from, bool const only_viewable,
bool const clear_visited)
{
vector<int> const & reachables =
G_.getReachable(formats.getNumber(from),
only_viewable,
clear_visited);
return intToFormat(reachables);
}
bool Converters::isReachable(string const & from, string const & to)
{
return G_.isReachable(formats.getNumber(from),
formats.getNumber(to));
}
Graph::EdgePath Converters::getPath(string const & from, string const & to)
{
return G_.getPath(formats.getNumber(from),
formats.getNumber(to));
}
vector<Format const *> Converters::importableFormats()
{
vector<string> l = loaders();
vector<Format const *> result = getReachableTo(l[0], true);
for (vector<string>::const_iterator it = l.begin() + 1;
it != l.end(); ++it) {
vector<Format const *> r = getReachableTo(*it, false);
result.insert(result.end(), r.begin(), r.end());
}
return result;
}
vector<string> Converters::loaders() const
{
vector<string> v;
v.push_back("lyx");
v.push_back("text");
v.push_back("textparagraph");
return v;
}
} // namespace lyx