3 * This file is part of LyX, the document processor.
4 * Licence details can be found in the file COPYING.
6 * \author Angus Leeming
8 * Full author contact details are available in file CREDITS.
13 #include "support/FileName.h"
14 #include "support/FileNameList.h"
16 #include "support/convert.h"
17 #include "support/debug.h"
18 #include "support/filetools.h"
19 #include "support/lstrings.h"
20 #include "support/os.h"
21 #include "support/Package.h"
22 #include "support/qstring_helpers.h"
31 #include <boost/assert.hpp>
32 #include <boost/scoped_array.hpp>
39 #ifdef HAVE_SYS_TYPES_H
40 # include <sys/types.h>
42 #ifdef HAVE_SYS_STAT_H
43 # include <sys/stat.h>
63 #if defined(HAVE_MKSTEMP) && ! defined(HAVE_DECL_MKSTEMP)
64 extern "C" int mkstemp(char *);
67 #if !defined(HAVE_MKSTEMP) && defined(HAVE_MKTEMP)
71 # ifdef HAVE_PROCESS_H
82 /////////////////////////////////////////////////////////////////////
86 /////////////////////////////////////////////////////////////////////
88 struct FileName::Private
92 Private(string const & abs_filename) : fi(toqstr(abs_filename))
94 fi.setCaching(fi.exists() ? true : false);
100 /////////////////////////////////////////////////////////////////////
104 /////////////////////////////////////////////////////////////////////
107 FileName::FileName() : d(new Private)
112 FileName::FileName(string const & abs_filename)
113 : d(abs_filename.empty() ? new Private : new Private(abs_filename))
118 FileName::~FileName()
124 FileName::FileName(FileName const & rhs) : d(new Private)
130 FileName & FileName::operator=(FileName const & rhs)
137 bool FileName::empty() const
139 return d->fi.absoluteFilePath().isEmpty();
143 bool FileName::isAbsolute() const
145 return d->fi.isAbsolute();
149 string FileName::absFilename() const
151 return fromqstr(d->fi.absoluteFilePath());
155 void FileName::set(string const & name)
157 d->fi.setFile(toqstr(name));
158 BOOST_ASSERT(d->fi.isAbsolute());
162 void FileName::erase()
168 bool FileName::copyTo(FileName const & name) const
170 QFile::remove(name.d->fi.absoluteFilePath());
171 bool success = QFile::copy(d->fi.absoluteFilePath(), name.d->fi.absoluteFilePath());
173 lyxerr << "FileName::copyTo(): Could not copy file "
174 << *this << " to " << name << endl;
179 bool FileName::renameTo(FileName const & name) const
181 bool success = QFile::rename(d->fi.absoluteFilePath(), name.d->fi.absoluteFilePath());
183 LYXERR0("Could not rename file " << *this << " to " << name);
188 bool FileName::moveTo(FileName const & name) const
190 QFile::remove(name.d->fi.absoluteFilePath());
192 bool success = QFile::rename(d->fi.absoluteFilePath(),
193 name.d->fi.absoluteFilePath());
195 LYXERR0("Could not move file " << *this << " to " << name);
200 bool FileName::changePermission(unsigned long int mode) const
202 #if defined (HAVE_CHMOD) && defined (HAVE_MODE_T)
203 if (::chmod(toFilesystemEncoding().c_str(), mode_t(mode)) != 0) {
204 LYXERR0("File " << *this << ": cannot change permission to "
213 string FileName::toFilesystemEncoding() const
215 QByteArray const encoded = QFile::encodeName(d->fi.absoluteFilePath());
216 return string(encoded.begin(), encoded.end());
220 FileName FileName::fromFilesystemEncoding(string const & name)
222 QByteArray const encoded(name.c_str(), name.length());
223 return FileName(fromqstr(QFile::decodeName(encoded)));
227 bool FileName::exists() const
229 return d->fi.exists();
233 bool FileName::isSymLink() const
235 return d->fi.isSymLink();
239 bool FileName::isFileEmpty() const
241 return d->fi.size() == 0;
245 bool FileName::isDirectory() const
247 return d->fi.isDir();
251 bool FileName::isReadOnly() const
253 return d->fi.isReadable() && !d->fi.isWritable();
257 bool FileName::isReadableDirectory() const
259 return d->fi.isDir() && d->fi.isReadable();
263 string FileName::onlyFileName() const
265 return fromqstr(d->fi.fileName());
269 FileName FileName::onlyPath() const
272 path.d->fi.setFile(d->fi.filePath());
277 bool FileName::isReadableFile() const
279 return d->fi.isFile() && d->fi.isReadable();
283 bool FileName::isWritable() const
285 return d->fi.isWritable();
289 bool FileName::isDirWritable() const
291 LYXERR(Debug::FILES, "isDirWriteable: " << *this);
293 FileName const tmpfl = FileName::tempName(absFilename() + "/lyxwritetest");
303 FileNameList FileName::dirList(string const & ext) const
305 FileNameList dirlist;
306 if (!isDirectory()) {
307 LYXERR0("Directory '" << *this << "' does not exist!");
311 QDir dir = d->fi.absoluteDir();
316 case '.': filter = "*" + toqstr(ext); break;
317 case '*': filter = toqstr(ext); break;
318 default: filter = "*." + toqstr(ext);
320 dir.setNameFilters(QStringList(filter));
321 LYXERR(Debug::FILES, "filtering on extension "
322 << fromqstr(filter) << " is requested.");
325 QFileInfoList list = dir.entryInfoList();
326 for (int i = 0; i != list.size(); ++i) {
327 FileName fi(fromqstr(list.at(i).absoluteFilePath()));
328 dirlist.push_back(fi);
329 LYXERR(Debug::FILES, "found file " << fi);
336 static int make_tempfile(char * templ)
338 #if defined(HAVE_MKSTEMP)
339 return ::mkstemp(templ);
340 #elif defined(HAVE_MKTEMP)
341 // This probably just barely works...
343 # if defined (HAVE_OPEN)
344 # if (!defined S_IRUSR)
345 # define S_IRUSR S_IREAD
346 # define S_IWUSR S_IWRITE
348 return ::open(templ, O_RDWR | O_CREAT | O_EXCL, S_IRUSR | S_IWUSR);
349 # elif defined (HAVE__OPEN)
350 return ::_open(templ,
351 _O_RDWR | _O_CREAT | _O_EXCL,
352 _S_IREAD | _S_IWRITE);
354 # error No open() function.
362 FileName FileName::tempName(string const & mask)
364 FileName tmp_name(mask);
366 if (tmp_name.d->fi.isAbsolute())
369 tmpfl = package().temp_dir().absFilename() + "/" + mask;
371 #if defined (HAVE_GETPID)
372 tmpfl += convert<string>(getpid());
373 #elif defined (HAVE__GETPID)
374 tmpfl += convert<string>(_getpid());
376 # error No getpid() function
380 // The supposedly safe mkstemp version
381 // FIXME: why not using std::string directly?
382 boost::scoped_array<char> tmpl(new char[tmpfl.length() + 1]); // + 1 for '\0'
383 tmpfl.copy(tmpl.get(), string::npos);
384 tmpl[tmpfl.length()] = '\0'; // terminator
386 int const tmpf = make_tempfile(tmpl.get());
388 string const t(to_utf8(from_filesystem8bit(tmpl.get())));
389 #if defined (HAVE_CLOSE)
391 #elif defined (HAVE__CLOSE)
394 # error No x() function.
396 LYXERR(Debug::FILES, "Temporary file `" << t << "' created.");
399 LYXERR(Debug::FILES, "LyX Error: Unable to create temporary file.");
404 FileName FileName::getcwd()
406 return FileName(".");
410 time_t FileName::lastModified() const
412 return d->fi.lastModified().toTime_t();
416 bool FileName::chdir() const
418 return QDir::setCurrent(d->fi.absoluteFilePath());
422 extern unsigned long sum(char const * file);
424 unsigned long FileName::checksum() const
427 //LYXERR0("File \"" << absFilename() << "\" does not exist!");
430 // a directory may be passed here so we need to test it. (bug 3622)
432 LYXERR0('"' << absFilename() << "\" is a directory!");
435 if (!lyxerr.debugging(Debug::FILES))
436 return sum(absFilename().c_str());
440 unsigned long r = sum(absFilename().c_str());
441 lyxerr << "Checksumming \"" << absFilename() << "\" lasted "
442 << t.elapsed() << " ms." << endl;
447 bool FileName::removeFile() const
449 bool const success = QFile::remove(d->fi.absoluteFilePath());
450 if (!success && exists())
451 LYXERR0("Could not delete file " << *this);
456 static bool rmdir(QFileInfo const & fi)
458 QDir dir(fi.absoluteFilePath());
459 QFileInfoList list = dir.entryInfoList();
461 for (int i = 0; i != list.size(); ++i) {
462 if (list.at(i).fileName() == ".")
464 if (list.at(i).fileName() == "..")
467 if (list.at(i).isDir()) {
468 LYXERR(Debug::FILES, "Removing dir "
469 << fromqstr(list.at(i).absoluteFilePath()));
470 removed = rmdir(list.at(i));
473 LYXERR(Debug::FILES, "Removing file "
474 << fromqstr(list.at(i).absoluteFilePath()));
475 removed = dir.remove(list.at(i).fileName());
479 LYXERR0("Could not delete "
480 << fromqstr(list.at(i).absoluteFilePath()));
483 QDir parent = fi.absolutePath();
484 success &= parent.rmdir(fi.fileName());
489 bool FileName::destroyDirectory() const
491 bool const success = rmdir(d->fi);
493 LYXERR0("Could not delete " << *this);
499 static int mymkdir(char const * pathname, unsigned long int mode)
501 // FIXME: why don't we have mode_t in lyx::mkdir prototype ??
503 # if MKDIR_TAKES_ONE_ARG
505 return ::mkdir(pathname);
506 // FIXME: "Permissions of created directories are ignored on this system."
509 return ::mkdir(pathname, mode_t(mode));
511 #elif defined(_WIN32)
513 return CreateDirectory(pathname, 0) != 0 ? 0 : -1;
514 // FIXME: "Permissions of created directories are ignored on this system."
516 return ::_mkdir(pathname);
517 // FIXME: "Permissions of created directories are ignored on this system."
519 # error "Don't know how to create a directory on this system."
525 bool FileName::createDirectory(int permission) const
527 BOOST_ASSERT(!empty());
528 return mymkdir(toFilesystemEncoding().c_str(), permission) == 0;
532 bool FileName::createPath() const
534 BOOST_ASSERT(!empty());
539 bool success = dir.mkpath(d->fi.absoluteFilePath());
541 LYXERR0("Cannot create path '" << *this << "'!");
546 docstring const FileName::absoluteFilePath() const
548 return qstring_to_ucs4(d->fi.absoluteFilePath());
552 docstring FileName::displayName(int threshold) const
554 return makeDisplayPath(absFilename(), threshold);
558 docstring FileName::fileContents(string const & encoding) const
560 if (!isReadableFile()) {
561 LYXERR0("File '" << *this << "' is not redable!");
565 QFile file(d->fi.absoluteFilePath());
566 if (!file.open(QIODevice::ReadOnly)) {
567 LYXERR0("File '" << *this
568 << "' could not be opened in read only mode!");
571 QByteArray contents = file.readAll();
574 if (contents.isEmpty()) {
575 LYXERR(Debug::FILES, "File '" << *this
576 << "' is either empty or some error happened while reading it.");
581 if (encoding.empty() || encoding == "UTF-8")
582 s = QString::fromUtf8(contents.data());
583 else if (encoding == "ascii")
584 s = QString::fromAscii(contents.data());
585 else if (encoding == "local8bit")
586 s = QString::fromLocal8Bit(contents.data());
587 else if (encoding == "latin1")
588 s = QString::fromLatin1(contents.data());
590 return qstring_to_ucs4(s);
594 void FileName::changeExtension(string const & extension)
596 // FIXME: use Qt native methods...
597 string const oldname = absFilename();
598 string::size_type const last_slash = oldname.rfind('/');
599 string::size_type last_dot = oldname.rfind('.');
600 if (last_dot < last_slash && last_slash != string::npos)
601 last_dot = string::npos;
604 // Make sure the extension starts with a dot
605 if (!extension.empty() && extension[0] != '.')
606 ext= '.' + extension;
610 set(oldname.substr(0, last_dot) + ext);
614 string FileName::guessFormatFromContents() const
616 // the different filetypes and what they contain in one of the first lines
617 // (dots are any characters). (Herbert 20020131)
620 // EPS %!PS-Adobe-3.0 EPSF...
627 // PBM P1... or P4 (B/W)
628 // PGM P2... or P5 (Grayscale)
629 // PPM P3... or P6 (color)
630 // PS %!PS-Adobe-2.0 or 1.0, no "EPSF"!
631 // SGI \001\332... (decimal 474)
633 // TIFF II... or MM...
635 // XPM /* XPM */ sometimes missing (f.ex. tgif-export)
636 // ...static char *...
637 // XWD \000\000\000\151 (0x00006900) decimal 105
639 // GZIP \037\213 http://www.ietf.org/rfc/rfc1952.txt
640 // ZIP PK... http://www.halyava.ru/document/ind_arch.htm
641 // Z \037\235 UNIX compress
644 if (empty() || !isReadableFile())
647 ifstream ifs(toFilesystemEncoding().c_str());
649 // Couldn't open file...
653 static string const gzipStamp = "\037\213";
656 static string const zipStamp = "PK";
659 static string const compressStamp = "\037\235";
661 // Maximum strings to read
662 int const max_count = 50;
667 bool firstLine = true;
668 while ((count++ < max_count) && format.empty()) {
670 LYXERR(Debug::GRAPHICS, "filetools(getFormatFromContents)\n"
671 << "\tFile type not recognised before EOF!");
676 string const stamp = str.substr(0, 2);
677 if (firstLine && str.size() >= 2) {
678 // at first we check for a zipped file, because this
679 // information is saved in the first bytes of the file!
680 // also some graphic formats which save the information
681 // in the first line, too.
682 if (prefixIs(str, gzipStamp)) {
685 } else if (stamp == zipStamp) {
688 } else if (stamp == compressStamp) {
692 } else if (stamp == "BM") {
695 } else if (stamp == "\001\332") {
699 // Don't need to use str.at(0), str.at(1) because
700 // we already know that str.size() >= 2
701 } else if (str[0] == 'P') {
717 } else if ((stamp == "II") || (stamp == "MM")) {
720 } else if (prefixIs(str,"%TGIF")) {
723 } else if (prefixIs(str,"#FIG")) {
726 } else if (prefixIs(str,"GIF")) {
729 } else if (str.size() > 3) {
730 int const c = ((str[0] << 24) & (str[1] << 16) &
731 (str[2] << 8) & str[3]);
742 else if (contains(str,"EPSF"))
743 // dummy, if we have wrong file description like
744 // %!PS-Adobe-2.0EPSF"
747 else if (contains(str, "Grace"))
750 else if (contains(str, "JFIF"))
753 else if (contains(str, "%PDF"))
756 else if (contains(str, "PNG"))
759 else if (contains(str, "%!PS-Adobe")) {
762 if (contains(str,"EPSF"))
768 else if (contains(str, "_bits[]"))
771 else if (contains(str, "XPM") || contains(str, "static char *"))
774 else if (contains(str, "BITPIX"))
778 if (!format.empty()) {
779 LYXERR(Debug::GRAPHICS, "Recognised Fileformat: " << format);
783 LYXERR(Debug::GRAPHICS, "filetools(getFormatFromContents)\n"
784 << "\tCouldn't find a known format!");
789 bool FileName::isZippedFile() const
791 string const type = guessFormatFromContents();
792 return contains("gzip zip compress", type) && !type.empty();
796 docstring const FileName::relPath(string const & path) const
799 return makeRelPath(absoluteFilePath(), from_utf8(path));
803 bool operator==(FileName const & lhs, FileName const & rhs)
805 return lhs.absFilename() == rhs.absFilename();
809 bool operator!=(FileName const & lhs, FileName const & rhs)
811 return lhs.absFilename() != rhs.absFilename();
815 bool operator<(FileName const & lhs, FileName const & rhs)
817 return lhs.absFilename() < rhs.absFilename();
821 bool operator>(FileName const & lhs, FileName const & rhs)
823 return lhs.absFilename() > rhs.absFilename();
827 ostream & operator<<(ostream & os, FileName const & filename)
829 return os << filename.absFilename();
833 /////////////////////////////////////////////////////////////////////
837 /////////////////////////////////////////////////////////////////////
840 DocFileName::DocFileName()
841 : save_abs_path_(true)
845 DocFileName::DocFileName(string const & abs_filename, bool save_abs)
846 : FileName(abs_filename), save_abs_path_(save_abs), zipped_valid_(false)
850 DocFileName::DocFileName(FileName const & abs_filename, bool save_abs)
851 : FileName(abs_filename), save_abs_path_(save_abs), zipped_valid_(false)
855 void DocFileName::set(string const & name, string const & buffer_path)
859 FileName::set(makeAbsPath(name, buffer_path).absFilename());
860 zipped_valid_ = false;
864 void DocFileName::erase()
867 zipped_valid_ = false;
871 string DocFileName::relFilename(string const & path) const
874 return to_utf8(relPath(path));
878 string DocFileName::outputFilename(string const & path) const
880 return save_abs_path_ ? absFilename() : relFilename(path);
884 string DocFileName::mangledFilename(string const & dir) const
886 // We need to make sure that every DocFileName instance for a given
887 // filename returns the same mangled name.
888 typedef map<string, string> MangledMap;
889 static MangledMap mangledNames;
890 MangledMap::const_iterator const it = mangledNames.find(absFilename());
891 if (it != mangledNames.end())
894 string const name = absFilename();
896 string mname = os::internal_path(name);
897 // Remove the extension.
898 mname = support::changeExtension(name, string());
899 // The mangled name must be a valid LaTeX name.
900 // The list of characters to keep is probably over-restrictive,
901 // but it is not really a problem.
902 // Apart from non-ASCII characters, at least the following characters
903 // are forbidden: '/', '.', ' ', and ':'.
904 // On windows it is not possible to create files with '<', '>' or '?'
906 static string const keep = "abcdefghijklmnopqrstuvwxyz"
907 "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
909 string::size_type pos = 0;
910 while ((pos = mname.find_first_not_of(keep, pos)) != string::npos)
912 // Add the extension back on
913 mname = support::changeExtension(mname, getExtension(name));
915 // Prepend a counter to the filename. This is necessary to make
916 // the mangled name unique.
917 static int counter = 0;
919 s << counter++ << mname;
922 // MiKTeX's YAP (version 2.4.1803) crashes if the file name
923 // is longer than about 160 characters. MiKTeX's pdflatex
924 // is even pickier. A maximum length of 100 has been proven to work.
925 // If dir.size() > max length, all bets are off for YAP. We truncate
926 // the filename nevertheless, keeping a minimum of 10 chars.
928 string::size_type max_length = max(100 - ((int)dir.size() + 1), 10);
930 // If the mangled file name is too long, hack it to fit.
931 // We know we're guaranteed to have a unique file name because
933 if (mname.size() > max_length) {
934 int const half = (int(max_length) / 2) - 2;
936 mname = mname.substr(0, half) + "___" +
937 mname.substr(mname.size() - half);
941 mangledNames[absFilename()] = mname;
946 bool DocFileName::isZipped() const
948 if (!zipped_valid_) {
949 zipped_ = isZippedFile();
950 zipped_valid_ = true;
956 string DocFileName::unzippedFilename() const
958 return unzippedFileName(absFilename());
962 bool operator==(DocFileName const & lhs, DocFileName const & rhs)
964 return lhs.absFilename() == rhs.absFilename()
965 && lhs.saveAbsPath() == rhs.saveAbsPath();
969 bool operator!=(DocFileName const & lhs, DocFileName const & rhs)
971 return !(lhs == rhs);
974 } // namespace support