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lyx_mirror/src/LaTeX.cpp
Juergen Spitzmueller ec078bd29d Do not search for empty string
2012-09-17 09:32:47 +02:00

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/**
* \file LaTeX.cpp
* This file is part of LyX, the document processor.
* Licence details can be found in the file COPYING.
*
* \author Alfredo Braunstein
* \author Lars Gullik Bjønnes
* \author Jean-Marc Lasgouttes
* \author Angus Leeming
* \author Dekel Tsur
* \author Jürgen Spitzmüller
*
* Full author contact details are available in file CREDITS.
*/
#include <config.h>
#include "BufferList.h"
#include "LaTeX.h"
#include "LyXRC.h"
#include "DepTable.h"
#include "support/debug.h"
#include "support/convert.h"
#include "support/FileName.h"
#include "support/filetools.h"
#include "support/gettext.h"
#include "support/lstrings.h"
#include "support/Systemcall.h"
#include "support/os.h"
#include "support/regex.h"
#include <fstream>
#include <stack>
using namespace std;
using namespace lyx::support;
namespace lyx {
namespace os = support::os;
// TODO: in no particular order
// - get rid of the call to
// BufferList::updateIncludedTeXfiles, this should either
// be done before calling LaTeX::funcs or in a completely
// different way.
// - the makeindex style files should be taken care of with
// the dependency mechanism.
// - we should perhaps also scan the bibtex log file
namespace {
docstring runMessage(unsigned int count)
{
return bformat(_("Waiting for LaTeX run number %1$d"), count);
}
} // anon namespace
/*
* CLASS TEXERRORS
*/
void TeXErrors::insertError(int line, docstring const & error_desc,
docstring const & error_text,
string const & child_name)
{
Error newerr(line, error_desc, error_text, child_name);
errors.push_back(newerr);
}
bool operator==(AuxInfo const & a, AuxInfo const & o)
{
return a.aux_file == o.aux_file
&& a.citations == o.citations
&& a.databases == o.databases
&& a.styles == o.styles;
}
bool operator!=(AuxInfo const & a, AuxInfo const & o)
{
return !(a == o);
}
/*
* CLASS LaTeX
*/
LaTeX::LaTeX(string const & latex, OutputParams const & rp,
FileName const & f, string const & p)
: cmd(latex), file(f), path(p), runparams(rp)
{
num_errors = 0;
if (prefixIs(cmd, "pdf")) { // Do we use pdflatex ?
depfile = FileName(file.absFileName() + ".dep-pdf");
output_file =
FileName(changeExtension(file.absFileName(), ".pdf"));
} else {
depfile = FileName(file.absFileName() + ".dep");
output_file =
FileName(changeExtension(file.absFileName(), ".dvi"));
}
}
void LaTeX::deleteFilesOnError() const
{
// currently just a dummy function.
// What files do we have to delete?
// This will at least make latex do all the runs
depfile.removeFile();
// but the reason for the error might be in a generated file...
// bibtex file
FileName const bbl(changeExtension(file.absFileName(), ".bbl"));
bbl.removeFile();
// biber file
FileName const bcf(changeExtension(file.absFileName(), ".bcf"));
bcf.removeFile();
// makeindex file
FileName const ind(changeExtension(file.absFileName(), ".ind"));
ind.removeFile();
// nomencl file
FileName const nls(changeExtension(file.absFileName(), ".nls"));
nls.removeFile();
// nomencl file (old version of the package)
FileName const gls(changeExtension(file.absFileName(), ".gls"));
gls.removeFile();
// Also remove the aux file
FileName const aux(changeExtension(file.absFileName(), ".aux"));
aux.removeFile();
}
int LaTeX::run(TeXErrors & terr)
// We know that this function will only be run if the lyx buffer
// has been changed. We also know that a newly written .tex file
// is always different from the previous one because of the date
// in it. However it seems safe to run latex (at least) one time
// each time the .tex file changes.
{
int scanres = NO_ERRORS;
unsigned int count = 0; // number of times run
num_errors = 0; // just to make sure.
unsigned int const MAX_RUN = 6;
DepTable head; // empty head
bool rerun = false; // rerun requested
// The class LaTeX does not know the temp path.
theBufferList().updateIncludedTeXfiles(FileName::getcwd().absFileName(),
runparams);
// Never write the depfile if an error was encountered.
// 0
// first check if the file dependencies exist:
// ->If it does exist
// check if any of the files mentioned in it have
// changed (done using a checksum).
// -> if changed:
// run latex once and
// remake the dependency file
// -> if not changed:
// just return there is nothing to do for us.
// ->if it doesn't exist
// make it and
// run latex once (we need to run latex once anyway) and
// remake the dependency file.
//
bool had_depfile = depfile.exists();
bool run_bibtex = false;
FileName const aux_file(changeExtension(file.absFileName(), "aux"));
if (had_depfile) {
LYXERR(Debug::DEPEND, "Dependency file exists");
// Read the dep file:
had_depfile = head.read(depfile);
}
if (had_depfile) {
// Update the checksums
head.update();
// Can't just check if anything has changed because it might
// have aborted on error last time... in which cas we need
// to re-run latex and collect the error messages
// (even if they are the same).
if (!output_file.exists()) {
LYXERR(Debug::DEPEND,
"re-running LaTeX because output file doesn't exist.");
} else if (!head.sumchange()) {
LYXERR(Debug::DEPEND, "return no_change");
return NO_CHANGE;
} else {
LYXERR(Debug::DEPEND, "Dependency file has changed");
}
if (head.extchanged(".bib") || head.extchanged(".bst"))
run_bibtex = true;
} else
LYXERR(Debug::DEPEND,
"Dependency file does not exist, or has wrong format");
/// We scan the aux file even when had_depfile = false,
/// because we can run pdflatex on the file after running latex on it,
/// in which case we will not need to run bibtex again.
vector<AuxInfo> bibtex_info_old;
if (!run_bibtex)
bibtex_info_old = scanAuxFiles(aux_file);
++count;
LYXERR(Debug::LATEX, "Run #" << count);
message(runMessage(count));
startscript();
scanres = scanLogFile(terr);
if (scanres & ERROR_RERUN) {
LYXERR(Debug::LATEX, "Rerunning LaTeX");
startscript();
scanres = scanLogFile(terr);
}
if (scanres & ERRORS) {
deleteFilesOnError();
return scanres; // return on error
}
vector<AuxInfo> const bibtex_info = scanAuxFiles(aux_file);
if (!run_bibtex && bibtex_info_old != bibtex_info)
run_bibtex = true;
// update the dependencies.
deplog(head); // reads the latex log
head.update();
// 1
// At this point we must run external programs if needed.
// makeindex will be run if a .idx file changed or was generated.
// And if there were undefined citations or changes in references
// the .aux file is checked for signs of bibtex. Bibtex is then run
// if needed.
// memoir (at least) writes an empty *idx file in the first place.
// A second latex run is needed.
FileName const idxfile(changeExtension(file.absFileName(), ".idx"));
rerun = idxfile.exists() && idxfile.isFileEmpty();
// run makeindex
if (head.haschanged(idxfile)) {
// no checks for now
LYXERR(Debug::LATEX, "Running MakeIndex.");
message(_("Running Index Processor."));
// onlyFileName() is needed for cygwin
rerun |= runMakeIndex(onlyFileName(idxfile.absFileName()),
runparams);
}
FileName const nlofile(changeExtension(file.absFileName(), ".nlo"));
if (head.haschanged(nlofile))
rerun |= runMakeIndexNomencl(file, ".nlo", ".nls");
FileName const glofile(changeExtension(file.absFileName(), ".glo"));
if (head.haschanged(glofile))
rerun |= runMakeIndexNomencl(file, ".glo", ".gls");
// check if we're using biber instead of bibtex
// biber writes no info to the aux file, so we just check
// if a bcf file exists (and if it was updated)
FileName const bcffile(changeExtension(file.absFileName(), ".bcf"));
biber |= head.exist(bcffile);
// run bibtex
// if (scanres & UNDEF_CIT || scanres & RERUN || run_bibtex)
if (scanres & UNDEF_CIT || run_bibtex) {
// Here we must scan the .aux file and look for
// "\bibdata" and/or "\bibstyle". If one of those
// tags is found -> run bibtex and set rerun = true;
// no checks for now
LYXERR(Debug::LATEX, "Running BibTeX.");
message(_("Running BibTeX."));
updateBibtexDependencies(head, bibtex_info);
rerun |= runBibTeX(bibtex_info, runparams);
if (biber) {
// since biber writes no info to the aux file, we have
// to parse the blg file (which only exists after biber
// was first issued)
FileName const blgfile(changeExtension(file.absFileName(), ".blg"));
if (blgfile.exists())
scanBlgFile(head);
}
} else if (!had_depfile) {
/// If we run pdflatex on the file after running latex on it,
/// then we do not need to run bibtex, but we do need to
/// insert the .bib and .bst files into the .dep-pdf file.
updateBibtexDependencies(head, bibtex_info);
}
// 2
// we know on this point that latex has been run once (or we just
// returned) and the question now is to decide if we need to run
// it any more. This is done by asking if any of the files in the
// dependency file has changed. (remember that the checksum for
// a given file is reported to have changed if it just was created)
// -> if changed or rerun == true:
// run latex once more and
// update the dependency structure
// -> if not changed:
// we do nothing at this point
//
if (rerun || head.sumchange()) {
rerun = false;
++count;
LYXERR(Debug::DEPEND, "Dep. file has changed or rerun requested");
LYXERR(Debug::LATEX, "Run #" << count);
message(runMessage(count));
startscript();
scanres = scanLogFile(terr);
if (scanres & ERRORS) {
deleteFilesOnError();
return scanres; // return on error
}
// update the depedencies
deplog(head); // reads the latex log
head.update();
} else {
LYXERR(Debug::DEPEND, "Dep. file has NOT changed");
}
// 3
// rerun bibtex?
// Complex bibliography packages such as Biblatex require
// an additional bibtex cycle sometimes.
if (scanres & UNDEF_CIT) {
// Here we must scan the .aux file and look for
// "\bibdata" and/or "\bibstyle". If one of those
// tags is found -> run bibtex and set rerun = true;
// no checks for now
LYXERR(Debug::LATEX, "Running BibTeX.");
message(_("Running BibTeX."));
updateBibtexDependencies(head, bibtex_info);
rerun |= runBibTeX(bibtex_info, runparams);
}
// 4
// The inclusion of files generated by external programs such as
// makeindex or bibtex might have done changes to pagenumbering,
// etc. And because of this we must run the external programs
// again to make sure everything is redone correctly.
// Also there should be no need to run the external programs any
// more after this.
// run makeindex if the <file>.idx has changed or was generated.
if (head.haschanged(idxfile)) {
// no checks for now
LYXERR(Debug::LATEX, "Running MakeIndex.");
message(_("Running Index Processor."));
// onlyFileName() is needed for cygwin
rerun = runMakeIndex(onlyFileName(changeExtension(
file.absFileName(), ".idx")), runparams);
}
// I am not pretty sure if need this twice.
if (head.haschanged(nlofile))
rerun |= runMakeIndexNomencl(file, ".nlo", ".nls");
if (head.haschanged(glofile))
rerun |= runMakeIndexNomencl(file, ".glo", ".gls");
// 5
// we will only run latex more if the log file asks for it.
// or if the sumchange() is true.
// -> rerun asked for:
// run latex and
// remake the dependency file
// goto 2 or return if max runs are reached.
// -> rerun not asked for:
// just return (fall out of bottom of func)
//
while ((head.sumchange() || rerun || (scanres & RERUN))
&& count < MAX_RUN) {
// Yes rerun until message goes away, or until
// MAX_RUNS are reached.
rerun = false;
++count;
LYXERR(Debug::LATEX, "Run #" << count);
message(runMessage(count));
startscript();
scanres = scanLogFile(terr);
if (scanres & ERRORS) {
deleteFilesOnError();
return scanres; // return on error
}
// keep this updated
head.update();
}
// Write the dependencies to file.
head.write(depfile);
LYXERR(Debug::LATEX, "Done.");
return scanres;
}
int LaTeX::startscript()
{
// onlyFileName() is needed for cygwin
string tmp = cmd + ' '
+ quoteName(onlyFileName(file.toFilesystemEncoding()))
+ " > " + os::nulldev();
Systemcall one;
return one.startscript(Systemcall::Wait, tmp, path);
}
bool LaTeX::runMakeIndex(string const & f, OutputParams const & runparams,
string const & params)
{
string tmp = runparams.use_japanese ?
lyxrc.jindex_command : lyxrc.index_command;
if (!runparams.index_command.empty())
tmp = runparams.index_command;
LYXERR(Debug::LATEX,
"idx file has been made, running index processor ("
<< tmp << ") on file " << f);
tmp = subst(tmp, "$$lang", runparams.document_language);
if (runparams.use_indices) {
tmp = lyxrc.splitindex_command + " -m " + quoteName(tmp);
LYXERR(Debug::LATEX,
"Multiple indices. Using splitindex command: " << tmp);
}
tmp += ' ';
tmp += quoteName(f);
tmp += params;
Systemcall one;
one.startscript(Systemcall::Wait, tmp, path);
return true;
}
bool LaTeX::runMakeIndexNomencl(FileName const & file,
string const & nlo, string const & nls)
{
LYXERR(Debug::LATEX, "Running MakeIndex for nomencl.");
message(_("Running MakeIndex for nomencl."));
string tmp = lyxrc.nomencl_command + ' ';
// onlyFileName() is needed for cygwin
tmp += quoteName(onlyFileName(changeExtension(file.absFileName(), nlo)));
tmp += " -o "
+ onlyFileName(changeExtension(file.toFilesystemEncoding(), nls));
Systemcall one;
one.startscript(Systemcall::Wait, tmp, path);
return true;
}
vector<AuxInfo> const
LaTeX::scanAuxFiles(FileName const & file)
{
vector<AuxInfo> result;
result.push_back(scanAuxFile(file));
string const basename = removeExtension(file.absFileName());
for (int i = 1; i < 1000; ++i) {
FileName const file2(basename
+ '.' + convert<string>(i)
+ ".aux");
if (!file2.exists())
break;
result.push_back(scanAuxFile(file2));
}
return result;
}
AuxInfo const LaTeX::scanAuxFile(FileName const & file)
{
AuxInfo result;
result.aux_file = file;
scanAuxFile(file, result);
return result;
}
void LaTeX::scanAuxFile(FileName const & file, AuxInfo & aux_info)
{
LYXERR(Debug::LATEX, "Scanning aux file: " << file);
ifstream ifs(file.toFilesystemEncoding().c_str());
string token;
static regex const reg1("\\\\citation\\{([^}]+)\\}");
static regex const reg2("\\\\bibdata\\{([^}]+)\\}");
static regex const reg3("\\\\bibstyle\\{([^}]+)\\}");
static regex const reg4("\\\\@input\\{([^}]+)\\}");
while (getline(ifs, token)) {
token = rtrim(token, "\r");
smatch sub;
// FIXME UNICODE: We assume that citation keys and filenames
// in the aux file are in the file system encoding.
token = to_utf8(from_filesystem8bit(token));
if (regex_match(token, sub, reg1)) {
string data = sub.str(1);
while (!data.empty()) {
string citation;
data = split(data, citation, ',');
LYXERR(Debug::LATEX, "Citation: " << citation);
aux_info.citations.insert(citation);
}
} else if (regex_match(token, sub, reg2)) {
string data = sub.str(1);
// data is now all the bib files separated by ','
// get them one by one and pass them to the helper
while (!data.empty()) {
string database;
data = split(data, database, ',');
database = changeExtension(database, "bib");
LYXERR(Debug::LATEX, "BibTeX database: `" << database << '\'');
aux_info.databases.insert(database);
}
} else if (regex_match(token, sub, reg3)) {
string style = sub.str(1);
// token is now the style file
// pass it to the helper
style = changeExtension(style, "bst");
LYXERR(Debug::LATEX, "BibTeX style: `" << style << '\'');
aux_info.styles.insert(style);
} else if (regex_match(token, sub, reg4)) {
string const file2 = sub.str(1);
scanAuxFile(makeAbsPath(file2), aux_info);
}
}
}
void LaTeX::updateBibtexDependencies(DepTable & dep,
vector<AuxInfo> const & bibtex_info)
{
// Since a run of Bibtex mandates more latex runs it is ok to
// remove all ".bib" and ".bst" files.
dep.remove_files_with_extension(".bib");
dep.remove_files_with_extension(".bst");
//string aux = OnlyFileName(ChangeExtension(file, ".aux"));
for (vector<AuxInfo>::const_iterator it = bibtex_info.begin();
it != bibtex_info.end(); ++it) {
for (set<string>::const_iterator it2 = it->databases.begin();
it2 != it->databases.end(); ++it2) {
FileName const file = findtexfile(*it2, "bib");
if (!file.empty())
dep.insert(file, true);
}
for (set<string>::const_iterator it2 = it->styles.begin();
it2 != it->styles.end(); ++it2) {
FileName const file = findtexfile(*it2, "bst");
if (!file.empty())
dep.insert(file, true);
}
}
// biber writes nothing into the aux file.
// Instead, we have to scan the blg file
if (biber) {
scanBlgFile(dep);
}
}
bool LaTeX::runBibTeX(vector<AuxInfo> const & bibtex_info,
OutputParams const & runparams)
{
bool result = false;
for (vector<AuxInfo>::const_iterator it = bibtex_info.begin();
it != bibtex_info.end(); ++it) {
if (!biber && it->databases.empty())
continue;
result = true;
string tmp = runparams.use_japanese ?
lyxrc.jbibtex_command : lyxrc.bibtex_command;
if (!runparams.bibtex_command.empty())
tmp = runparams.bibtex_command;
tmp += " ";
// onlyFileName() is needed for cygwin
tmp += quoteName(onlyFileName(removeExtension(
it->aux_file.absFileName())));
Systemcall one;
one.startscript(Systemcall::Wait, tmp, path);
}
// Return whether bibtex was run
return result;
}
int LaTeX::scanLogFile(TeXErrors & terr)
{
int last_line = -1;
int line_count = 1;
int retval = NO_ERRORS;
string tmp =
onlyFileName(changeExtension(file.absFileName(), ".log"));
LYXERR(Debug::LATEX, "Log file: " << tmp);
FileName const fn = FileName(makeAbsPath(tmp));
ifstream ifs(fn.toFilesystemEncoding().c_str());
bool fle_style = false;
static regex file_line_error(".+\\.\\D+:[0-9]+: (.+)");
static regex child_file(".*([0-9]+[A-Za-z]*_.+\\.tex).*");
// Flag for 'File ended while scanning' message.
// We need to wait for subsequent processing.
string wait_for_error;
string child_name;
int pnest = 0;
stack <pair<string, int> > child;
string token;
while (getline(ifs, token)) {
// MikTeX sometimes inserts \0 in the log file. They can't be
// removed directly with the existing string utility
// functions, so convert them first to \r, and remove all
// \r's afterwards, since we need to remove them anyway.
token = subst(token, '\0', '\r');
token = subst(token, "\r", "");
smatch sub;
LYXERR(Debug::LATEX, "Log line: " << token);
if (token.empty())
continue;
// Track child documents
for (size_t i = 0; i < token.length(); ++i) {
if (token[i] == '(') {
++pnest;
size_t j = token.find('(', i + 1);
size_t len = j == string::npos
? token.substr(i + 1).length()
: j - i - 1;
if (regex_match(token.substr(i + 1, len),
sub, child_file)) {
string const name = sub.str(1);
child.push(make_pair(name, pnest));
i += len;
}
} else if (token[i] == ')') {
if (!child.empty()
&& child.top().second == pnest)
child.pop();
--pnest;
}
}
child_name = child.empty() ? empty_string() : child.top().first;
if (contains(token, "file:line:error style messages enabled"))
fle_style = true;
if (prefixIs(token, "LaTeX Warning:") ||
prefixIs(token, "! pdfTeX warning")) {
// Here shall we handle different
// types of warnings
retval |= LATEX_WARNING;
LYXERR(Debug::LATEX, "LaTeX Warning.");
if (contains(token, "Rerun to get cross-references")) {
retval |= RERUN;
LYXERR(Debug::LATEX, "We should rerun.");
// package clefval needs 2 latex runs before bibtex
} else if (contains(token, "Value of")
&& contains(token, "on page")
&& contains(token, "undefined")) {
retval |= ERROR_RERUN;
LYXERR(Debug::LATEX, "Force rerun.");
// package etaremune
} else if (contains(token, "Etaremune labels have changed")) {
retval |= ERROR_RERUN;
LYXERR(Debug::LATEX, "Force rerun.");
} else if (contains(token, "Citation")
&& contains(token, "on page")
&& contains(token, "undefined")) {
retval |= UNDEF_CIT;
}
} else if (prefixIs(token, "Package")) {
// Package warnings
retval |= PACKAGE_WARNING;
if (contains(token, "natbib Warning:")) {
// Natbib warnings
if (contains(token, "Citation")
&& contains(token, "on page")
&& contains(token, "undefined")) {
retval |= UNDEF_CIT;
}
} else if (contains(token, "run BibTeX")) {
retval |= UNDEF_CIT;
} else if (contains(token, "run Biber")) {
retval |= UNDEF_CIT;
biber = true;
} else if (contains(token, "Rerun LaTeX") ||
contains(token, "Please rerun LaTeX") ||
contains(token, "Rerun to get")) {
// at least longtable.sty and bibtopic.sty
// might use this.
LYXERR(Debug::LATEX, "We should rerun.");
retval |= RERUN;
}
} else if (prefixIs(token, "LETTRE WARNING:")) {
if (contains(token, "veuillez recompiler")) {
// lettre.cls
LYXERR(Debug::LATEX, "We should rerun.");
retval |= RERUN;
}
} else if (token[0] == '(') {
if (contains(token, "Rerun LaTeX") ||
contains(token, "Rerun to get")) {
// Used by natbib
LYXERR(Debug::LATEX, "We should rerun.");
retval |= RERUN;
}
} else if (prefixIs(token, "! ")
|| (fle_style
&& regex_match(token, sub, file_line_error)
&& !contains(token, "pdfTeX warning"))) {
// Ok, we have something that looks like a TeX Error
// but what do we really have.
// Just get the error description:
string desc;
if (prefixIs(token, "! "))
desc = string(token, 2);
else if (fle_style)
desc = sub.str();
if (contains(token, "LaTeX Error:"))
retval |= LATEX_ERROR;
if (prefixIs(token, "! File ended while scanning")){
if (prefixIs(token, "! File ended while scanning use of \\Hy@setref@link.")){
// bug 7344. We must rerun LaTeX if hyperref has been toggled.
retval |= ERROR_RERUN;
LYXERR(Debug::LATEX, "Force rerun.");
} else {
// bug 6445. At this point its not clear we finish with error.
wait_for_error = desc;
continue;
}
}
if (prefixIs(token, "! Paragraph ended before \\Hy@setref@link was complete.")){
// bug 7344. We must rerun LaTeX if hyperref has been toggled.
retval |= ERROR_RERUN;
LYXERR(Debug::LATEX, "Force rerun.");
}
if (!wait_for_error.empty() && prefixIs(token, "! Emergency stop.")){
retval |= LATEX_ERROR;
string errstr;
int count = 0;
errstr = wait_for_error;
do {
if (!getline(ifs, tmp))
break;
tmp = rtrim(tmp, "\r");
errstr += "\n" + tmp;
if (++count > 5)
break;
} while (!contains(tmp, "(job aborted"));
terr.insertError(0,
from_local8bit("Emergency stop"),
from_local8bit(errstr),
child_name);
}
// get the next line
string tmp;
int count = 0;
do {
if (!getline(ifs, tmp))
break;
tmp = rtrim(tmp, "\r");
if (++count > 10)
break;
} while (!prefixIs(tmp, "l."));
if (prefixIs(tmp, "l.")) {
// we have a latex error
retval |= TEX_ERROR;
if (contains(desc,
"Package babel Error: You haven't defined the language") ||
contains(desc,
"Package babel Error: You haven't loaded the option"))
retval |= ERROR_RERUN;
// get the line number:
int line = 0;
sscanf(tmp.c_str(), "l.%d", &line);
// get the rest of the message:
string errstr(tmp, tmp.find(' '));
errstr += '\n';
getline(ifs, tmp);
tmp = rtrim(tmp, "\r");
while (!contains(errstr, "l.")
&& !tmp.empty()
&& !prefixIs(tmp, "! ")
&& !contains(tmp, "(job aborted")) {
errstr += tmp;
errstr += "\n";
getline(ifs, tmp);
tmp = rtrim(tmp, "\r");
}
LYXERR(Debug::LATEX, "line: " << line << '\n'
<< "Desc: " << desc << '\n' << "Text: " << errstr);
if (line == last_line)
++line_count;
else {
line_count = 1;
last_line = line;
}
if (line_count <= 5) {
// FIXME UNICODE
// We have no idea what the encoding of
// the log file is.
// It seems that the output from the
// latex compiler itself is pure ASCII,
// but it can include bits from the
// document, so whatever encoding we
// assume here it can be wrong.
terr.insertError(line,
from_local8bit(desc),
from_local8bit(errstr),
child_name);
++num_errors;
}
}
} else {
// information messages, TeX warnings and other
// warnings we have not caught earlier.
if (prefixIs(token, "Overfull ")) {
retval |= TEX_WARNING;
} else if (prefixIs(token, "Underfull ")) {
retval |= TEX_WARNING;
} else if (contains(token, "Rerun to get citations")) {
// Natbib seems to use this.
retval |= UNDEF_CIT;
} else if (contains(token, "No pages of output")) {
// A dvi file was not created
retval |= NO_OUTPUT;
} else if (contains(token, "That makes 100 errors")) {
// More than 100 errors were reprted
retval |= TOO_MANY_ERRORS;
} else if (prefixIs(token, "!pdfTeX error:")){
// otherwise we dont catch e.g.:
// !pdfTeX error: pdflatex (file feyn10): Font feyn10 at 600 not found
retval |= ERRORS;
terr.insertError(0,
from_local8bit("pdfTeX Error"),
from_local8bit(token),
child_name);
}
}
}
LYXERR(Debug::LATEX, "Log line: " << token);
return retval;
}
namespace {
bool insertIfExists(FileName const & absname, DepTable & head)
{
if (absname.exists() && !absname.isDirectory()) {
head.insert(absname, true);
return true;
}
return false;
}
bool handleFoundFile(string const & ff, DepTable & head)
{
// convert from native os path to unix path
string foundfile = os::internal_path(trim(ff));
LYXERR(Debug::DEPEND, "Found file: " << foundfile);
// Ok now we found a file.
// Now we should make sure that this is a file that we can
// access through the normal paths.
// We will not try any fancy search methods to
// find the file.
// (1) foundfile is an
// absolute path and should
// be inserted.
FileName absname;
if (FileName::isAbsolute(foundfile)) {
LYXERR(Debug::DEPEND, "AbsolutePath file: " << foundfile);
// On initial insert we want to do the update at once
// since this file cannot be a file generated by
// the latex run.
absname.set(foundfile);
if (!insertIfExists(absname, head)) {
// check for spaces
string strippedfile = foundfile;
while (contains(strippedfile, " ")) {
// files with spaces are often enclosed in quotation
// marks; those have to be removed
string unquoted = subst(strippedfile, "\"", "");
absname.set(unquoted);
if (insertIfExists(absname, head))
return true;
// strip off part after last space and try again
string tmp = strippedfile;
string const stripoff =
rsplit(tmp, strippedfile, ' ');
absname.set(strippedfile);
if (insertIfExists(absname, head))
return true;
}
}
}
string onlyfile = onlyFileName(foundfile);
absname = makeAbsPath(onlyfile);
// check for spaces
while (contains(foundfile, ' ')) {
if (absname.exists())
// everything o.k.
break;
else {
// files with spaces are often enclosed in quotation
// marks; those have to be removed
string unquoted = subst(foundfile, "\"", "");
absname = makeAbsPath(unquoted);
if (absname.exists())
break;
// strip off part after last space and try again
string strippedfile;
string const stripoff =
rsplit(foundfile, strippedfile, ' ');
foundfile = strippedfile;
onlyfile = onlyFileName(strippedfile);
absname = makeAbsPath(onlyfile);
}
}
// (2) foundfile is in the tmpdir
// insert it into head
if (absname.exists() && !absname.isDirectory()) {
// FIXME: This regex contained glo, but glo is used by the old
// version of nomencl.sty. Do we need to put it back?
static regex const unwanted("^.*\\.(aux|log|dvi|bbl|ind)$");
if (regex_match(onlyfile, unwanted)) {
LYXERR(Debug::DEPEND, "We don't want " << onlyfile
<< " in the dep file");
} else if (suffixIs(onlyfile, ".tex")) {
// This is a tex file generated by LyX
// and latex is not likely to change this
// during its runs.
LYXERR(Debug::DEPEND, "Tmpdir TeX file: " << onlyfile);
head.insert(absname, true);
} else {
LYXERR(Debug::DEPEND, "In tmpdir file:" << onlyfile);
head.insert(absname);
}
return true;
} else {
LYXERR(Debug::DEPEND, "Not a file or we are unable to find it.");
return false;
}
}
bool completeFilename(string const & ff, DepTable & head)
{
// If we do not find a dot, we suspect
// a fragmental file name
if (!contains(ff, '.'))
return false;
// if we have a dot, we let handleFoundFile decide
return handleFoundFile(ff, head);
}
int iterateLine(string const token, regex const reg, string const closing,
int fragment_pos, DepTable & head)
{
smatch what;
string::const_iterator first = token.begin();
string::const_iterator end = token.end();
bool fragment = false;
string last_match;
while (regex_search(first, end, what, reg)) {
// if we have a dot, try to handle as file
if (contains(what.str(1), '.')) {
first = what[0].second;
if (what.str(2) == closing) {
handleFoundFile(what.str(1), head);
// since we had a closing bracket,
// do not investigate further
fragment = false;
} else
// if we have no closing bracket,
// try to handle as file nevertheless
fragment = !handleFoundFile(
what.str(1) + what.str(2), head);
}
// if we do not have a dot, check if the line has
// a closing bracket (else, we suspect a line break)
else if (what.str(2) != closing) {
first = what[0].second;
fragment = true;
} else {
// we have a closing bracket, so the content
// is not a file name.
// no need to investigate further
first = what[0].second;
fragment = false;
}
last_match = what.str(1);
}
// We need to consider the result from previous line iterations:
// We might not find a fragment here, but another one might follow
// E.g.: (filename.ext) <filenam
// Vice versa, we consider the search completed if a real match
// follows a potential fragment from a previous iteration.
// E.g. <some text we considered a fragment (filename.ext)
// result = -1 means we did not find a fragment!
int result = -1;
int last_match_pos = -1;
if (!last_match.empty() && token.find(last_match) != string::npos)
last_match_pos = int(token.find(last_match));
if (fragment) {
if (last_match_pos > fragment_pos)
result = last_match_pos;
else
result = fragment_pos;
} else
if (last_match_pos < fragment_pos)
result = fragment_pos;
return result;
}
} // anon namespace
void LaTeX::deplog(DepTable & head)
{
// This function reads the LaTeX log file end extracts all the
// external files used by the LaTeX run. The files are then
// entered into the dependency file.
string const logfile =
onlyFileName(changeExtension(file.absFileName(), ".log"));
static regex const reg1("File: (.+).*");
static regex const reg2("No file (.+)(.).*");
static regex const reg3("\\\\openout[0-9]+.*=.*`(.+)(..).*");
// If an index should be created, MikTex does not write a line like
// \openout# = 'sample.idx'.
// but instead only a line like this into the log:
// Writing index file sample.idx
static regex const reg4("Writing index file (.+).*");
static regex const regoldnomencl("Writing glossary file (.+).*");
static regex const regnomencl("Writing nomenclature file (.+).*");
// If a toc should be created, MikTex does not write a line like
// \openout# = `sample.toc'.
// but only a line like this into the log:
// \tf@toc=\write#
// This line is also written by tetex.
// This line is not present if no toc should be created.
static regex const miktexTocReg("\\\\tf@toc=\\\\write.*");
// file names can be enclosed in <...> (anywhere on the line)
static regex const reg5(".*<[^>]+.*");
// and also (...) anywhere on the line
static regex const reg6(".*\\([^)]+.*");
FileName const fn = makeAbsPath(logfile);
ifstream ifs(fn.toFilesystemEncoding().c_str());
string lastline;
while (ifs) {
// Ok, the scanning of files here is not sufficient.
// Sometimes files are named by "File: xxx" only
// Therefore we use some regexps to find files instead.
// Note: all file names and paths might contains spaces.
// Also, file names might be broken across lines. Therefore
// we mark (potential) fragments and merge those lines.
bool fragment = false;
string token;
getline(ifs, token);
// MikTeX sometimes inserts \0 in the log file. They can't be
// removed directly with the existing string utility
// functions, so convert them first to \r, and remove all
// \r's afterwards, since we need to remove them anyway.
token = subst(token, '\0', '\r');
token = subst(token, "\r", "");
if (token.empty() || token == ")") {
lastline = string();
continue;
}
// FIXME UNICODE: We assume that the file names in the log
// file are in the file system encoding.
token = to_utf8(from_filesystem8bit(token));
// Sometimes, filenames are broken across lines.
// We care for that and save suspicious lines.
// Here we exclude some cases where we are sure
// that there is no continued filename
if (!lastline.empty()) {
static regex const package_info("Package \\w+ Info: .*");
static regex const package_warning("Package \\w+ Warning: .*");
if (prefixIs(token, "File:") || prefixIs(token, "(Font)")
|| prefixIs(token, "Package:")
|| prefixIs(token, "Language:")
|| prefixIs(token, "LaTeX Info:")
|| prefixIs(token, "LaTeX Font Info:")
|| prefixIs(token, "\\openout[")
|| prefixIs(token, "))")
|| regex_match(token, package_info)
|| regex_match(token, package_warning))
lastline = string();
}
if (!lastline.empty())
// probably a continued filename from last line
token = lastline + token;
if (token.length() > 255) {
// string too long. Cut off.
token.erase(0, token.length() - 251);
}
smatch sub;
// (1) "File: file.ext"
if (regex_match(token, sub, reg1)) {
// is this a fragmental file name?
fragment = !completeFilename(sub.str(1), head);
// However, ...
if (suffixIs(token, ")"))
// no fragment for sure
fragment = false;
// (2) "No file file.ext"
} else if (regex_match(token, sub, reg2)) {
// file names must contains a dot, line ends with dot
if (contains(sub.str(1), '.') && sub.str(2) == ".")
fragment = !handleFoundFile(sub.str(1), head);
else
// we suspect a line break
fragment = true;
// (3) "\openout<nr> = `file.ext'."
} else if (regex_match(token, sub, reg3)) {
// search for closing '. at the end of the line
if (sub.str(2) == "\'.")
fragment = !handleFoundFile(sub.str(1), head);
else
// potential fragment
fragment = true;
// (4) "Writing index file file.ext"
} else if (regex_match(token, sub, reg4))
// fragmential file name?
fragment = !completeFilename(sub.str(1), head);
// (5) "Writing nomenclature file file.ext"
else if (regex_match(token, sub, regnomencl) ||
regex_match(token, sub, regoldnomencl))
// fragmental file name?
fragment= !completeFilename(sub.str(1), head);
// (6) "\tf@toc=\write<nr>" (for MikTeX)
else if (regex_match(token, sub, miktexTocReg))
fragment = !handleFoundFile(onlyFileName(changeExtension(
file.absFileName(), ".toc")), head);
else
// not found, but we won't check further
fragment = false;
int fragment_pos = -1;
// (7) "<file.ext>"
// We can have several of these on one line
// (and in addition to those above)
if (regex_match(token, sub, reg5)) {
// search for strings in <...>
static regex reg5_1("<([^>]+)(.)");
fragment_pos = iterateLine(token, reg5_1, ">",
fragment_pos, head);
fragment = (fragment_pos != -1);
}
// (8) "(file.ext)"
// We can have several of these on one line
// this must be queried separated, because of
// cases such as "File: file.ext (type eps)"
// where "File: file.ext" would be skipped
if (regex_match(token, sub, reg6)) {
// search for strings in (...)
static regex reg6_1("\\(([^()]+)(.)");
fragment_pos = iterateLine(token, reg6_1, ")",
fragment_pos, head);
fragment = (fragment_pos != -1);
}
if (fragment)
// probable linebreak within file name:
// save this line
lastline = token;
else
// no linebreak: reset
lastline = string();
}
// Make sure that the main .tex file is in the dependency file.
head.insert(file, true);
}
void LaTeX::scanBlgFile(DepTable & dep)
{
FileName const blg_file(changeExtension(file.absFileName(), "blg"));
LYXERR(Debug::LATEX, "Scanning blg file: " << blg_file);
ifstream ifs(blg_file.toFilesystemEncoding().c_str());
string token;
static regex const reg1(".*Found (bibtex|BibTeX) data (file|source) '([^']+).*");
while (getline(ifs, token)) {
token = rtrim(token, "\r");
smatch sub;
// FIXME UNICODE: We assume that citation keys and filenames
// in the aux file are in the file system encoding.
token = to_utf8(from_filesystem8bit(token));
if (regex_match(token, sub, reg1)) {
string data = sub.str(3);
if (!data.empty()) {
LYXERR(Debug::LATEX, "Found bib file: " << data);
handleFoundFile(data, dep);
}
}
}
}
} // namespace lyx
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