Fix bug 2637

* src/graphics/GraphicsConverter.C
	(Converter::Impl::Impl): Don't call the default converter directly,
	but create a temporary script with build_script() as for the
	configured converters. This makes sure that the file name does not
	need to be passed on the command line anymore.
	(build_script): This cannot fail anymore, so change the return type
	to void
	(build_script): Use build_conversion_command also for the default
	converter. This has the advantage that the special code for moving
	${outfile}.0, ${outfile}.1 is actually used for ImageMagick's convert.
	(build_conversion_command): factored out from build_script


git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@14657 a592a061-630c-0410-9148-cb99ea01b6c8
This commit is contained in:
Georg Baum 2006-08-13 19:07:43 +00:00
parent a392ba1c17
commit f0648e2320

View File

@ -133,10 +133,10 @@ string const & Converter::convertedFile() const
namespace { namespace {
/** Build the conversion script, returning true if able to build it. /** Build the conversion script.
* The script is output to the ostringstream 'script'. * The script is output to the stream \p script.
*/ */
bool build_script(string const & from_file, string const & to_file_base, void build_script(string const & from_file, string const & to_file_base,
string const & from_format, string const & to_format, string const & from_format, string const & to_format,
ostream & script); ostream & script);
@ -163,24 +163,7 @@ Converter::Impl::Impl(string const & from_file, string const & to_file_base,
// The conversion commands are stored in a stringstream // The conversion commands are stored in a stringstream
ostringstream script; ostringstream script;
bool const success = build_script(from_file, to_file_base, build_script(from_file, to_file_base, from_format, to_format, script);
from_format, to_format, script);
if (!success) {
script_command_ =
support::os::python() + ' ' +
quoteName(libFileSearch("scripts", "convertDefault.py")) +
' ' +
quoteName((from_format.empty() ? "" : from_format + ':') + from_file) +
' ' +
quoteName(to_format + ':' + to_file_);
lyxerr[Debug::GRAPHICS]
<< "\tNo converter defined! I use convertDefault.py\n\t"
<< script_command_ << endl;
} else {
lyxerr[Debug::GRAPHICS] << "\tConversion script:" lyxerr[Debug::GRAPHICS] << "\tConversion script:"
<< "\n--------------------------------------\n" << "\n--------------------------------------\n"
<< script.str() << script.str()
@ -206,12 +189,11 @@ Converter::Impl::Impl(string const & from_file, string const & to_file_base,
// The command needed to run the conversion process // The command needed to run the conversion process
// We create a dummy command for ease of understanding of the // We create a dummy command for ease of understanding of the
// list of forked processes. // list of forked processes.
// Note: 'sh ' is absolutely essential, or execvp will fail. // Note: 'python ' is absolutely essential, or execvp will fail.
script_command_ = support::os::python() + ' ' + script_command_ = support::os::python() + ' ' +
quoteName(script_file_) + ' ' + quoteName(script_file_) + ' ' +
quoteName(onlyFilename(from_file)) + ' ' + quoteName(onlyFilename(from_file)) + ' ' +
quoteName(to_format); quoteName(to_format);
}
// All is ready to go // All is ready to go
valid_process_ = true; valid_process_ = true;
} }
@ -276,90 +258,13 @@ string const move_file(string const & from_file, string const & to_file)
} }
bool build_script(string const & from_file, void build_conversion_command(string const & command, ostream & script)
string const & to_file_base,
string const & from_format,
string const & to_format,
ostream & script)
{ {
BOOST_ASSERT(from_format != to_format); // Store in the python script
lyxerr[Debug::GRAPHICS] << "build_script ... ";
typedef Converters::EdgePath EdgePath;
if (from_format.empty())
return false;
script << "#!/usr/bin/env python -tt\n"
"import os, shutil, sys\n\n"
"def unlinkNoThrow(file):\n"
" ''' remove a file, do not throw if an error occurs '''\n"
" try:\n"
" os.unlink(file)\n"
" except:\n"
" pass\n\n";
// we do not use ChangeExtension because this is a basename
// which may nevertheless contain a '.'
string const to_file = to_file_base + '.'
+ formats.extension(to_format);
EdgePath edgepath = converters.getPath(from_format, to_format);
if (edgepath.empty()) {
lyxerr[Debug::GRAPHICS] << "ready (edgepath.empty())" << endl;
return false;
}
// Create a temporary base file-name for all intermediate steps.
// Remember to remove the temp file because we only want the name...
static int counter = 0;
string const tmp = "gconvert" + convert<string>(counter++);
string const to_base = tempName(string(), tmp);
unlink(to_base);
// Create a copy of the file in case the original name contains
// problematic characters like ' or ". We can work around that problem
// in python, but the converters might be shell scripts and have more
// troubles with it.
string outfile = changeExtension(to_base, getExtension(from_file));
script << "infile = '"
<< subst(subst(from_file, "\\", "\\\\"), "'", "\\'") << "'\n"
"outfile = " << quoteName(outfile) << "\n"
"shutil.copy(infile, outfile)\n";
// The conversion commands may contain these tokens that need to be
// changed to infile, infile_base, outfile respectively.
string const token_from("$$i");
string const token_base("$$b");
string const token_to("$$o");
EdgePath::const_iterator it = edgepath.begin();
EdgePath::const_iterator end = edgepath.end();
for (; it != end; ++it) {
::Converter const & conv = converters.get(*it);
// Build the conversion command
string const infile = outfile;
string const infile_base = changeExtension(infile, string());
outfile = changeExtension(to_base, conv.To->extension());
// Store these names in the shell script
script << "infile = " << quoteName(infile) << '\n'
<< "infile_base = " << quoteName(infile_base) << '\n'
<< "outfile = " << quoteName(outfile) << '\n';
string command = conv.command;
command = subst(command, token_from, "' + '\"' + infile + '\"' + '");
command = subst(command, token_base, "' + '\"' + infile_base + '\"' + '");
command = subst(command, token_to, "' + '\"' + outfile + '\"' + '");
command = libScriptSearch(command);
// Store in the shell script
script << "\nif os.system(r'" << command << "') != 0:\n"; script << "\nif os.system(r'" << command << "') != 0:\n";
// Test that this was successful. If not, remove // Test that this was successful. If not, remove
// ${outfile} and exit the shell script // ${outfile} and exit the python script
script << " unlinkNoThrow(outfile)\n" script << " unlinkNoThrow(outfile)\n"
<< " sys.exit(1)\n\n"; << " sys.exit(1)\n\n";
@ -379,13 +284,111 @@ bool build_script(string const & from_file,
// Delete the infile // Delete the infile
script << "unlinkNoThrow(infile)\n\n"; script << "unlinkNoThrow(infile)\n\n";
}
void build_script(string const & from_file,
string const & to_file_base,
string const & from_format,
string const & to_format,
ostream & script)
{
BOOST_ASSERT(from_format != to_format);
lyxerr[Debug::GRAPHICS] << "build_script ... ";
typedef Converters::EdgePath EdgePath;
script << "#!/usr/bin/env python\n"
"import os, shutil, sys\n\n"
"def unlinkNoThrow(file):\n"
" ''' remove a file, do not throw if an error occurs '''\n"
" try:\n"
" os.unlink(file)\n"
" except:\n"
" pass\n\n";
// we do not use ChangeExtension because this is a basename
// which may nevertheless contain a '.'
string const to_file = to_file_base + '.'
+ formats.extension(to_format);
EdgePath const edgepath = from_format.empty() ?
EdgePath() :
converters.getPath(from_format, to_format);
// Create a temporary base file-name for all intermediate steps.
// Remember to remove the temp file because we only want the name...
static int counter = 0;
string const tmp = "gconvert" + convert<string>(counter++);
string const to_base = tempName(string(), tmp);
unlink(to_base);
// Create a copy of the file in case the original name contains
// problematic characters like ' or ". We can work around that problem
// in python, but the converters might be shell scripts and have more
// troubles with it.
string outfile = changeExtension(to_base, getExtension(from_file));
script << "infile = '"
<< subst(subst(from_file, "\\", "\\\\"), "'", "\\'") << "'\n"
"outfile = " << quoteName(outfile) << "\n"
"shutil.copy(infile, outfile)\n";
if (edgepath.empty()) {
// Either from_format is unknown or we don't have a
// converter path from from_format to to_format, so we use
// the default converter.
script << "infile = outfile\n"
<< "outfile = " << quoteName(to_file) << '\n';
ostringstream os;
os << support::os::python() << " \""
<< libFileSearch("scripts", "convertDefault.py") << "\" ";
if (!from_format.empty())
os << from_format << ':';
os << "' + '\"' + infile + '\"' + ' "
<< to_format << ":' + '\"' + outfile + '\"' + '";
string const command = os.str();
lyxerr[Debug::GRAPHICS]
<< "\tNo converter defined! I use convertDefault.py\n\t"
<< command << endl;
build_conversion_command(command, script);
}
// The conversion commands may contain these tokens that need to be
// changed to infile, infile_base, outfile respectively.
string const token_from("$$i");
string const token_base("$$b");
string const token_to("$$o");
EdgePath::const_iterator it = edgepath.begin();
EdgePath::const_iterator end = edgepath.end();
for (; it != end; ++it) {
::Converter const & conv = converters.get(*it);
// Build the conversion command
string const infile = outfile;
string const infile_base = changeExtension(infile, string());
outfile = changeExtension(to_base, conv.To->extension());
// Store these names in the python script
script << "infile = " << quoteName(infile) << '\n'
<< "infile_base = " << quoteName(infile_base) << '\n'
<< "outfile = " << quoteName(outfile) << '\n';
string command = conv.command;
command = subst(command, token_from, "' + '\"' + infile + '\"' + '");
command = subst(command, token_base, "' + '\"' + infile_base + '\"' + '");
command = subst(command, token_to, "' + '\"' + outfile + '\"' + '");
command = libScriptSearch(command);
build_conversion_command(command, script);
} }
// Move the final outfile to to_file // Move the final outfile to to_file
script << move_file("outfile", quoteName(to_file)); script << move_file("outfile", quoteName(to_file));
lyxerr[Debug::GRAPHICS] << "ready!" << endl; lyxerr[Debug::GRAPHICS] << "ready!" << endl;
return true;
} }
} // namespace anon } // namespace anon