3 * This file is part of LyX, the document processor.
4 * Licence details can be found in the file COPYING.
6 * parts Copyright 1985, 1990, 1993 Free Software Foundation, Inc.
8 * \author Ivan Schreter
9 * \author Dirk Niggemann
10 * \author Asger Alstrup
11 * \author Lars Gullik Bjønnes
12 * \author Jean-Marc Lasgouttes
13 * \author Angus Leeming
17 * Full author contact details are available in file CREDITS.
19 * General path-mangling functions
26 #include "support/filetools.h"
28 #include "support/debug.h"
29 #include "support/environment.h"
30 #include "support/gettext.h"
31 #include "support/lstrings.h"
32 #include "support/os.h"
33 #include "support/Messages.h"
34 #include "support/Package.h"
35 #include "support/PathChanger.h"
36 #include "support/Systemcall.h"
37 #include "support/qstring_helpers.h"
40 #include <QTemporaryFile>
42 #include "support/lassert.h"
43 #include "support/regex.h"
75 bool isLyXFileName(string const & filename)
77 return suffixIs(ascii_lowercase(filename), ".lyx");
81 bool isSGMLFileName(string const & filename)
83 return suffixIs(ascii_lowercase(filename), ".sgml");
87 bool isValidLaTeXFileName(string const & filename)
89 string const invalid_chars("#%\"");
90 return filename.find_first_of(invalid_chars) == string::npos;
94 bool isValidDVIFileName(string const & filename)
96 string const invalid_chars("${}()[]^");
97 return filename.find_first_of(invalid_chars) == string::npos;
101 bool isBinaryFile(FileName const & filename)
103 bool isbinary = false;
104 if (filename.empty() || !filename.exists())
108 magic_t magic_cookie = magic_open(MAGIC_MIME_ENCODING);
110 bool detected = true;
111 if (magic_load(magic_cookie, NULL) != 0) {
112 LYXERR(Debug::FILES, "isBinaryFile: "
113 "Could not load magic database - "
114 << magic_error(magic_cookie));
117 char const *charset = magic_file(magic_cookie,
118 filename.toFilesystemEncoding().c_str());
119 isbinary = contains(charset, "binary");
121 magic_close(magic_cookie);
126 // Try by looking for binary chars at the beginning of the file.
127 // Note that this is formally not correct, since count_bin_chars
128 // expects utf8, and the passed string can be anything: plain text
129 // in any encoding, or really binary data. In practice it works,
130 // since QString::fromUtf8() drops invalid utf8 sequences, and
131 // while the exact number may not be correct, we still get a high
132 // number for truly binary files.
134 ifstream ifs(filename.toFilesystemEncoding().c_str());
138 // Maximum strings to read
139 int const max_count = 50;
141 // Maximum number of binary chars allowed
142 int const max_bin = 5;
147 while (count++ < max_count && !ifs.eof()) {
149 binchars += count_bin_chars(str);
151 return binchars > max_bin;
155 string const latex_path(string const & original_path,
156 latex_path_extension extension,
157 latex_path_dots dots)
159 // On cygwin, we may need windows or posix style paths.
160 string path = os::latex_path(original_path);
161 path = subst(path, "~", "\\string~");
162 if (path.find(' ') != string::npos) {
163 // We can't use '"' because " is sometimes active (e.g. if
164 // babel is loaded with the "german" option)
165 if (extension == EXCLUDE_EXTENSION) {
166 // changeExtension calls os::internal_path internally
167 // so don't use it to remove the extension.
168 string const ext = getExtension(path);
169 string const base = ext.empty() ?
171 path.substr(0, path.length() - ext.length() - 1);
172 // changeExtension calls os::internal_path internally
173 // so don't use it to re-add the extension.
174 path = "\\string\"" + base + "\\string\"." + ext;
176 path = "\\string\"" + path + "\\string\"";
180 if (dots != ESCAPE_DOTS)
183 // Replace dots with the lyxdot macro, but only in the file name,
184 // not the directory part.
185 // addName etc call os::internal_path internally
186 // so don't use them for path manipulation
187 // The directory separator is always '/' for LaTeX.
188 string::size_type pos = path.rfind('/');
189 if (pos == string::npos)
190 return subst(path, ".", "\\lyxdot ");
191 return path.substr(0, pos) + subst(path.substr(pos), ".", "\\lyxdot ");
195 // Substitutes spaces with underscores in filename (and path)
196 FileName const makeLatexName(FileName const & file)
198 string name = file.onlyFileName();
199 string const path = file.onlyPath().absFileName() + "/";
201 // ok so we scan through the string twice, but who cares.
202 // FIXME: in Unicode time this will break for sure! There is
203 // a non-latin world out there...
204 string const keep = "abcdefghijklmnopqrstuvwxyz"
205 "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
206 "@!'()*+,-./0123456789:;<=>?[]`|";
208 string::size_type pos = 0;
209 while ((pos = name.find_first_not_of(keep, pos)) != string::npos)
212 FileName latex_name(path + name);
213 latex_name.changeExtension(".tex");
218 string const quoteName(string const & name, quote_style style)
222 // This does not work on native Windows for filenames
223 // containing the following characters < > : " / \ | ? *
224 // Moreover, it can't be made to work, as, according to
225 // http://msdn.microsoft.com/en-us/library/aa365247(VS.85).aspx
226 // those are reserved characters, and thus are forbidden.
227 // Please, also note that the command-line parser in
228 // ForkedCall::generateChild cannot deal with filenames
229 // containing " or ', therefore we don't pass user filenames
230 // to child processes if possible. We store them in a python
231 // script instead, where we don't have these limitations.
233 return (os::shell() == os::UNIX) ?
234 '\'' + subst(name, "'", "\'\\\'\'") + '\'' :
237 // According to the QProcess parser, a single double
238 // quote is represented by three consecutive ones.
239 // Here we simply escape the double quote and let our
240 // simple parser in Systemcall.cpp do the substitution.
241 return '"' + subst(name, "\"", "\\\"") + '"';
243 case quote_shell_filename:
244 return quoteName(os::external_path(name), quote_shell);
246 return "\"" + subst(subst(name, "\\", "\\\\"), "\"", "\\\"")
249 // shut up stupid compiler
255 // Uses a string of paths separated by ";"s to find a file to open.
256 // Can't cope with pathnames with a ';' in them. Returns full path to file.
257 // If path entry begins with $$LyX/, use system_lyxdir
258 // If path entry begins with $$User/, use user_lyxdir
259 // Example: "$$User/doc;$$LyX/doc"
260 FileName const fileOpenSearch(string const & path, string const & name,
265 bool notfound = true;
266 string tmppath = split(path, path_element, ';');
268 while (notfound && !path_element.empty()) {
269 path_element = os::internal_path(path_element);
270 if (!suffixIs(path_element, '/'))
272 path_element = subst(path_element, "$$LyX",
273 package().system_support().absFileName());
274 path_element = subst(path_element, "$$User",
275 package().user_support().absFileName());
277 real_file = fileSearch(path_element, name, ext);
279 if (real_file.empty()) {
281 tmppath = split(tmppath, path_element, ';');
282 } while (!tmppath.empty() && path_element.empty());
292 // Returns the real name of file name in directory path, with optional
294 FileName const fileSearch(string const & path, string const & name,
295 string const & exts, search_mode mode)
297 // if `name' is an absolute path, we ignore the setting of `path'
298 // Expand Environmentvariables in 'name'
299 string const tmpname = replaceEnvironmentPath(name);
300 FileName fullname(makeAbsPath(tmpname, path));
301 // search first without extension, then with it.
302 if (fullname.isReadableFile())
306 return mode == may_not_exist ? fullname : FileName();
308 string ext = token(exts, ',', n);
309 while (!ext.empty()) {
310 // Only add the extension if it is not already the extension of
312 bool addext = getExtension(fullname.absFileName()) != ext;
314 if (mode == check_hidpi) {
315 FileName fullname2x = FileName(addExtension(fullname.absFileName() + "@2x", ext));
316 if (fullname2x.isReadableFile())
319 fullname = FileName(addExtension(fullname.absFileName(), ext));
321 if (fullname.isReadableFile() || mode == may_not_exist)
324 fullname.changeExtension("");
325 ext = token(exts, ',', ++n);
331 // Search the file name.ext in the subdirectory dir of
333 // 2) build_lyxdir (if not empty)
335 FileName const libFileSearch(string const & dir, string const & name,
336 string const & ext, search_mode mode)
338 FileName fullname = fileSearch(addPath(package().user_support().absFileName(), dir),
340 if (!fullname.empty())
343 if (!package().build_support().empty())
344 fullname = fileSearch(addPath(package().build_support().absFileName(), dir),
346 if (!fullname.empty())
349 return fileSearch(addPath(package().system_support().absFileName(), dir),
354 FileName const i18nLibFileSearch(string const & dir, string const & name,
357 /* The highest priority value is the `LANGUAGE' environment
358 variable. But we don't use the value if the currently
359 selected locale is the C locale. This is a GNU extension.
361 Otherwise, w use a trick to guess what support/gettext.has done:
362 each po file is able to tell us its name. (JMarc)
365 string lang = getGuiMessages().language();
366 string const language = getEnv("LANGUAGE");
367 if (!lang.empty() && !language.empty())
371 lang = split(lang, l, ':');
374 // First try with the full name
375 tmp = libFileSearch(addPath(dir, l), name, ext);
379 // Then the name without country code
380 string const shortl = token(l, '_', 0);
382 tmp = libFileSearch(addPath(dir, shortl), name, ext);
388 // For compatibility, to be removed later (JMarc)
389 tmp = libFileSearch(dir, token(l, '_', 0) + '_' + name,
392 lyxerr << "i18nLibFileSearch: File `" << tmp
393 << "' has been found by the old method" <<endl;
397 lang = split(lang, l, ':');
400 return libFileSearch(dir, name, ext);
404 FileName const imageLibFileSearch(string & dir, string const & name,
405 string const & ext, search_mode mode)
407 if (!lyx::lyxrc.icon_set.empty()) {
408 string const imagedir = addPath(dir, lyx::lyxrc.icon_set);
409 FileName const fn = libFileSearch(imagedir, name, ext, mode);
415 return libFileSearch(dir, name, ext, mode);
419 string const commandPrep(string const & command_in)
421 static string const token_scriptpath = "$$s/";
422 string const python_call = "python -tt";
424 string command = command_in;
425 if (prefixIs(command_in, python_call))
426 command = os::python() + command_in.substr(python_call.length());
428 // Find the starting position of "$$s/"
429 string::size_type const pos1 = command.find(token_scriptpath);
430 if (pos1 == string::npos)
432 // Find the end of the "$$s/some_subdir/some_script" word within
433 // command. Assumes that the script name does not contain spaces.
434 string::size_type const start_script = pos1 + 4;
435 string::size_type const pos2 = command.find(' ', start_script);
436 string::size_type const size_script = pos2 == string::npos?
437 (command.size() - start_script) : pos2 - start_script;
439 // Does this script file exist?
440 string const script =
441 libFileSearch(".", command.substr(start_script, size_script)).absFileName();
443 if (script.empty()) {
444 // Replace "$$s/" with ""
445 command.erase(pos1, 4);
447 quote_style style = quote_shell;
448 if (prefixIs(command, os::python()))
449 style = quote_python;
451 // Replace "$$s/foo/some_script" with "<path to>/some_script".
452 string::size_type const size_replace = size_script + 4;
453 command.replace(pos1, size_replace, quoteName(script, style));
460 static string createTempFile(QString const & mask)
462 // FIXME: This is not safe. QTemporaryFile creates a file in open(),
463 // but the file is deleted when qt_tmp goes out of scope.
464 // Therefore the next call to createTempFile() may create the
465 // same file again. To make this safe the QTemporaryFile object
466 // needs to be kept for the whole life time of the temp file name.
467 // This could be achieved by creating a class TempDir (like
468 // TempFile, but using a currentlky non-existing
469 // QTemporaryDirectory object).
470 QTemporaryFile qt_tmp(mask + ".XXXXXXXXXXXX");
472 string const temp_file = fromqstr(qt_tmp.fileName());
473 LYXERR(Debug::FILES, "Temporary file `" << temp_file << "' created.");
476 LYXERR(Debug::FILES, "Unable to create temporary file with following template: "
477 << qt_tmp.fileTemplate());
482 static FileName createTmpDir(FileName const & tempdir, string const & mask)
484 LYXERR(Debug::FILES, "createTmpDir: tempdir=`" << tempdir << "'\n"
485 << "createTmpDir: mask=`" << mask << '\'');
487 QFileInfo tmp_fi(QDir(toqstr(tempdir.absFileName())), toqstr(mask));
488 FileName const tmpfl(createTempFile(tmp_fi.absoluteFilePath()));
490 if (tmpfl.empty() || !tmpfl.createDirectory(0700)) {
491 LYXERR0("LyX could not create temporary directory in " << tempdir
500 FileName const createLyXTmpDir(FileName const & deflt)
502 if (deflt.empty() || deflt == package().system_temp_dir())
503 return createTmpDir(package().system_temp_dir(), "lyx_tmpdir");
505 if (deflt.createDirectory(0777))
508 if (deflt.isDirWritable()) {
509 // deflt could not be created because it
510 // did exist already, so let's create our own
512 return createTmpDir(deflt, "lyx_tmpdir");
514 // some other error occurred.
515 return createTmpDir(package().system_temp_dir(), "lyx_tmpdir");
520 // Strip filename from path name
521 string const onlyPath(string const & filename)
523 // If empty filename, return empty
524 if (filename.empty())
527 // Find last / or start of filename
528 size_t j = filename.rfind('/');
529 return j == string::npos ? "./" : filename.substr(0, j + 1);
533 // Convert relative path into absolute path based on a basepath.
534 // If relpath is absolute, just use that.
535 // If basepath is empty, use CWD as base.
536 // Note that basePath can be a relative path, in the sense that it may
537 // not begin with "/" (e.g.), but it should NOT contain such constructs
539 // FIXME It might be nice if the code didn't simply assume that.
540 FileName const makeAbsPath(string const & relPath, string const & basePath)
542 // checks for already absolute path
543 if (FileName::isAbsolute(relPath))
544 return FileName(relPath);
546 // Copies given paths
547 string tempRel = os::internal_path(relPath);
548 // Since TempRel is NOT absolute, we can safely replace "//" with "/"
549 tempRel = subst(tempRel, "//", "/");
553 if (FileName::isAbsolute(basePath))
556 tempBase = addPath(FileName::getcwd().absFileName(), basePath);
558 // Handle /./ at the end of the path
559 while (suffixIs(tempBase, "/./"))
560 tempBase.erase(tempBase.length() - 2);
562 // processes relative path
563 string rTemp = tempRel;
566 // Check for a leading "~"
568 rTemp = split(rTemp, temp, '/');
570 tempBase = Package::get_home_dir().absFileName();
575 while (!rTemp.empty()) {
577 rTemp = split(rTemp, temp, '/');
579 if (temp == ".") continue;
581 // Remove one level of TempBase
582 if (tempBase.length() <= 1) {
583 //this is supposed to be an absolute path, so...
587 //erase a trailing slash if there is one
588 if (suffixIs(tempBase, "/"))
589 tempBase.erase(tempBase.length() - 1, string::npos);
591 string::size_type i = tempBase.length() - 1;
592 while (i > 0 && tempBase[i] != '/')
595 tempBase.erase(i, string::npos);
598 } else if (temp.empty() && !rTemp.empty()) {
599 tempBase = os::current_root() + rTemp;
602 // Add this piece to TempBase
603 if (!suffixIs(tempBase, '/'))
609 // returns absolute path
610 return FileName(tempBase);
614 // Correctly append filename to the pathname.
615 // If pathname is '.', then don't use pathname.
616 // Chops any path of filename.
617 string const addName(string const & path, string const & fname)
619 string const basename = onlyFileName(fname);
622 if (path != "." && path != "./" && !path.empty()) {
623 buf = os::internal_path(path);
624 if (!suffixIs(path, '/'))
628 return buf + basename;
632 // Strips path from filename
633 string const onlyFileName(string const & fname)
638 string::size_type j = fname.rfind('/');
639 if (j == string::npos) // no '/' in fname
643 return fname.substr(j + 1);
647 // Search the string for ${VAR} and $VAR and replace VAR using getenv.
648 string const replaceEnvironmentPath(string const & path)
650 // ${VAR} is defined as
651 // $\{[A-Za-z_][A-Za-z_0-9]*\}
652 static string const envvar_br = "[$]\\{([A-Za-z_][A-Za-z_0-9]*)\\}";
654 // $VAR is defined as:
655 // $[A-Za-z_][A-Za-z_0-9]*
656 static string const envvar = "[$]([A-Za-z_][A-Za-z_0-9]*)";
658 static regex const envvar_br_re("(.*)" + envvar_br + "(.*)");
659 static regex const envvar_re("(.*)" + envvar + "(.*)");
660 string result = path;
663 if (!regex_match(result, what, envvar_br_re)) {
664 if (!regex_match(result, what, envvar_re))
667 string env_var = getEnv(what.str(2));
668 result = what.str(1) + env_var + what.str(3);
674 // Return a command prefix for setting the environment of the TeX engine.
675 string latexEnvCmdPrefix(string const & path, string const & lpath)
677 bool use_lpath = !(lpath.empty() || lpath == "." || lpath == "./");
679 if (path.empty() || (lyxrc.texinputs_prefix.empty() && !use_lpath))
682 string texinputs_prefix = lyxrc.texinputs_prefix.empty() ? string()
683 : os::latex_path_list(
684 replaceCurdirPath(path, lyxrc.texinputs_prefix));
685 string const allother_prefix = os::latex_path_list(path);
686 string const sep = string(1, os::path_separator(os::TEXENGINE));
687 string const texinputs = getEnv("TEXINPUTS");
688 string const bibinputs = getEnv("BIBINPUTS");
689 string const bstinputs = getEnv("BSTINPUTS");
690 string const texfonts = getEnv("TEXFONTS");
693 string const abslpath = FileName::isAbsolute(lpath)
694 ? os::latex_path(lpath)
695 : os::latex_path(FileName(path + "/" + lpath).realPath());
696 if (texinputs_prefix.empty())
697 texinputs_prefix = abslpath;
698 else if (suffixIs(texinputs_prefix, sep))
699 texinputs_prefix.append(abslpath + sep);
701 texinputs_prefix.append(sep + abslpath);
704 if (os::shell() == os::UNIX)
705 return "env TEXINPUTS=\"." + sep + texinputs_prefix
706 + sep + texinputs + "\" "
707 + "BIBINPUTS=\"." + sep + allother_prefix
708 + sep + bibinputs + "\" "
709 + "BSTINPUTS=\"." + sep + allother_prefix
710 + sep + bstinputs + "\" "
711 + "TEXFONTS=\"." + sep + allother_prefix
712 + sep + texfonts + "\" ";
714 // NOTE: the dummy blank dirs are necessary to force the
715 // QProcess parser to quote the argument (see bug 9453)
716 return "cmd /d /c set \"TEXINPUTS=." + sep + " "
717 + sep + texinputs_prefix
718 + sep + texinputs + "\" & "
719 + "set \"BIBINPUTS=." + sep + " "
720 + sep + allother_prefix
721 + sep + bibinputs + "\" & "
722 + "set \"BSTINPUTS=." + sep + " "
723 + sep + allother_prefix
724 + sep + bstinputs + "\" & "
725 + "set \"TEXFONTS=." + sep + " "
726 + sep + allother_prefix
727 + sep + texfonts + "\" & ";
731 // Replace current directory in all elements of a path list with a given path.
732 string const replaceCurdirPath(string const & path, string const & pathlist)
734 string const oldpathlist = replaceEnvironmentPath(pathlist);
735 char const sep = os::path_separator();
738 for (size_t i = 0, k = 0; i != string::npos; k = i) {
739 i = oldpathlist.find(sep, i);
740 string p = oldpathlist.substr(k, i - k);
741 if (FileName::isAbsolute(p)) {
747 } else if (prefixIs(p, "./")) {
749 while (p[offset] == '/')
752 newpathlist += addPath(path, p.substr(offset));
753 if (suffixIs(p, "//"))
756 if (i != string::npos) {
758 // Stop here if the last element is empty
759 if (++i == oldpathlist.length())
767 // Make relative path out of two absolute paths
768 docstring const makeRelPath(docstring const & abspath, docstring const & basepath)
769 // Makes relative path out of absolute path. If it is deeper than basepath,
770 // it's easy. If basepath and abspath share something (they are all deeper
771 // than some directory), it'll be rendered using ..'s. If they are completely
772 // different, then the absolute path will be used as relative path.
774 docstring::size_type const abslen = abspath.length();
775 docstring::size_type const baselen = basepath.length();
777 docstring::size_type i = os::common_path(abspath, basepath);
780 // actually no match - cannot make it relative
784 // Count how many dirs there are in basepath above match
785 // and append as many '..''s into relpath
787 docstring::size_type j = i;
788 while (j < baselen) {
789 if (basepath[j] == '/') {
790 if (j + 1 == baselen)
797 // Append relative stuff from common directory to abspath
798 if (abspath[i] == '/')
800 for (; i < abslen; ++i)
803 if (suffixIs(buf, '/'))
804 buf.erase(buf.length() - 1);
805 // Substitute empty with .
812 // Append sub-directory(ies) to a path in an intelligent way
813 string const addPath(string const & path, string const & path_2)
816 string const path2 = os::internal_path(path_2);
818 if (!path.empty() && path != "." && path != "./") {
819 buf = os::internal_path(path);
820 if (path[path.length() - 1] != '/')
824 if (!path2.empty()) {
825 string::size_type const p2start = path2.find_first_not_of('/');
826 string::size_type const p2end = path2.find_last_not_of('/');
827 string const tmp = path2.substr(p2start, p2end - p2start + 1);
834 string const changeExtension(string const & oldname, string const & extension)
836 string::size_type const last_slash = oldname.rfind('/');
837 string::size_type last_dot = oldname.rfind('.');
838 if (last_dot < last_slash && last_slash != string::npos)
839 last_dot = string::npos;
842 // Make sure the extension starts with a dot
843 if (!extension.empty() && extension[0] != '.')
844 ext= '.' + extension;
848 return os::internal_path(oldname.substr(0, last_dot) + ext);
852 string const removeExtension(string const & name)
854 return changeExtension(name, string());
858 string const addExtension(string const & name, string const & extension)
860 if (!extension.empty() && extension[0] != '.')
861 return name + '.' + extension;
862 return name + extension;
866 /// Return the extension of the file (not including the .)
867 string const getExtension(string const & name)
869 string::size_type const last_slash = name.rfind('/');
870 string::size_type const last_dot = name.rfind('.');
871 if (last_dot != string::npos &&
872 (last_slash == string::npos || last_dot > last_slash))
873 return name.substr(last_dot + 1,
874 name.length() - (last_dot + 1));
880 string const unzippedFileName(string const & zipped_file)
882 string const ext = getExtension(zipped_file);
883 if (ext == "gz" || ext == "z" || ext == "Z")
884 return changeExtension(zipped_file, string());
885 else if (ext == "svgz")
886 return changeExtension(zipped_file, "svg");
887 return onlyPath(zipped_file) + "unzipped_" + onlyFileName(zipped_file);
891 FileName const unzipFile(FileName const & zipped_file, string const & unzipped_file)
893 FileName const tempfile = FileName(unzipped_file.empty() ?
894 unzippedFileName(zipped_file.toFilesystemEncoding()) :
897 string const command = "gunzip -c " +
898 zipped_file.toFilesystemEncoding() + " > " +
899 tempfile.toFilesystemEncoding();
901 one.startscript(Systemcall::Wait, command);
902 // test that command was executed successfully (anon)
903 // yes, please do. (Lgb)
908 docstring const makeDisplayPath(string const & path, unsigned int threshold)
912 // If file is from LyXDir, display it as if it were relative.
913 string const system = package().system_support().absFileName();
914 if (prefixIs(str, system) && str != system)
915 return from_utf8("[" + str.erase(0, system.length()) + "]");
917 // replace /home/blah with ~/
918 string const home = Package::get_home_dir().absFileName();
919 if (!home.empty() && prefixIs(str, home))
920 str = subst(str, home, "~");
922 if (str.length() <= threshold)
923 return from_utf8(os::external_path(str));
925 string const prefix = ".../";
926 docstring dstr = from_utf8(str);
929 while (dstr.length() > threshold)
930 dstr = split(dstr, temp, '/');
932 // Did we shorten everything away?
934 // Yes, filename itself is too long.
935 // Pick the start and the end of the filename.
936 docstring fstr = from_utf8(onlyFileName(path));
938 if (support::truncateWithEllipsis(dstr, threshold / 2))
939 dstr += fstr.substr(fstr.length() - threshold / 2 - 2,
943 return from_utf8(os::external_path(prefix + to_utf8(dstr)));
948 bool readLink(FileName const & file, FileName & link)
950 string const encoded = file.toFilesystemEncoding();
951 #ifdef HAVE_DEF_PATH_MAX
952 char linkbuffer[PATH_MAX + 1];
953 ssize_t const nRead = ::readlink(encoded.c_str(),
954 linkbuffer, sizeof(linkbuffer) - 1);
957 linkbuffer[nRead] = '\0'; // terminator
959 vector<char> buf(1024);
963 nRead = ::readlink(encoded.c_str(), &buf[0], buf.size() - 1);
967 if (static_cast<size_t>(nRead) < buf.size() - 1) {
970 buf.resize(buf.size() * 2);
972 buf[nRead] = '\0'; // terminator
973 const char * linkbuffer = &buf[0];
975 link = makeAbsPath(linkbuffer, onlyPath(file.absFileName()));
979 bool readLink(FileName const &, FileName &)
986 cmd_ret const runCommand(string const & cmd)
988 // FIXME: replace all calls to RunCommand with ForkedCall
989 // (if the output is not needed) or the code in ISpell.cpp
990 // (if the output is needed).
992 // One question is if we should use popen or
993 // create our own popen based on fork, exec, pipe
994 // of course the best would be to have a
995 // pstream (process stream), with the
996 // variants ipstream, opstream
1000 PROCESS_INFORMATION process;
1001 SECURITY_ATTRIBUTES security;
1004 bool err2out = false;
1006 string const infile = trim(split(cmd, command, '<'), " \"");
1007 command = rtrim(command);
1008 if (suffixIs(command, "2>&1")) {
1009 command = rtrim(command, "2>&1");
1012 string const cmdarg = "/d /c " + command;
1013 string const comspec = getEnv("COMSPEC");
1015 security.nLength = sizeof(SECURITY_ATTRIBUTES);
1016 security.bInheritHandle = TRUE;
1017 security.lpSecurityDescriptor = NULL;
1019 if (CreatePipe(&in, &out, &security, 0)) {
1020 memset(&startup, 0, sizeof(STARTUPINFO));
1021 memset(&process, 0, sizeof(PROCESS_INFORMATION));
1023 startup.cb = sizeof(STARTUPINFO);
1024 startup.dwFlags = STARTF_USESTDHANDLES;
1026 startup.hStdError = err2out ? out : GetStdHandle(STD_ERROR_HANDLE);
1027 startup.hStdInput = infile.empty()
1028 ? GetStdHandle(STD_INPUT_HANDLE)
1029 : CreateFile(infile.c_str(), GENERIC_READ,
1030 FILE_SHARE_READ, &security, OPEN_EXISTING,
1031 FILE_ATTRIBUTE_NORMAL, NULL);
1032 startup.hStdOutput = out;
1034 if (startup.hStdInput != INVALID_HANDLE_VALUE &&
1035 CreateProcess(comspec.c_str(), (LPTSTR)cmdarg.c_str(),
1036 &security, &security, TRUE, CREATE_NO_WINDOW,
1037 0, 0, &startup, &process)) {
1039 CloseHandle(process.hThread);
1040 int fno = _open_osfhandle((intptr_t)in, _O_RDONLY);
1042 inf = _fdopen(fno, "r");
1045 #elif defined (HAVE_POPEN)
1046 FILE * inf = ::popen(cmd.c_str(), os::popen_read_mode());
1047 #elif defined (HAVE__POPEN)
1048 FILE * inf = ::_popen(cmd.c_str(), os::popen_read_mode());
1050 #error No popen() function.
1053 // (Claus Hentschel) Check if popen was successful ;-)
1055 lyxerr << "RunCommand:: could not start child process" << endl;
1056 return make_pair(-1, string());
1062 ret += static_cast<char>(c);
1066 #if defined (_WIN32)
1067 WaitForSingleObject(process.hProcess, INFINITE);
1068 if (!infile.empty())
1069 CloseHandle(startup.hStdInput);
1070 CloseHandle(process.hProcess);
1071 int const pret = fclose(inf);
1072 #elif defined (HAVE_PCLOSE)
1073 int const pret = pclose(inf);
1074 #elif defined (HAVE__PCLOSE)
1075 int const pret = _pclose(inf);
1077 #error No pclose() function.
1081 perror("RunCommand:: could not terminate child process");
1083 return make_pair(pret, ret);
1087 FileName const findtexfile(string const & fil, string const & /*format*/)
1089 /* There is no problem to extend this function too use other
1090 methods to look for files. It could be setup to look
1091 in environment paths and also if wanted as a last resort
1092 to a recursive find. One of the easier extensions would
1093 perhaps be to use the LyX file lookup methods. But! I am
1094 going to implement this until I see some demand for it.
1098 // If the file can be found directly, we just return a
1099 // absolute path version of it.
1100 FileName const absfile(makeAbsPath(fil));
1101 if (absfile.exists())
1104 // Now we try to find it using kpsewhich.
1105 // It seems from the kpsewhich manual page that it is safe to use
1106 // kpsewhich without --format: "When the --format option is not
1107 // given, the search path used when looking for a file is inferred
1108 // from the name given, by looking for a known extension. If no
1109 // known extension is found, the search path for TeX source files
1111 // However, we want to take advantage of the format sine almost all
1112 // the different formats has environment variables that can be used
1113 // to controll which paths to search. f.ex. bib looks in
1114 // BIBINPUTS and TEXBIB. Small list follows:
1115 // bib - BIBINPUTS, TEXBIB
1117 // graphic/figure - TEXPICTS, TEXINPUTS
1118 // ist - TEXINDEXSTYLE, INDEXSTYLE
1119 // pk - PROGRAMFONTS, PKFONTS, TEXPKS, GLYPHFONTS, TEXFONTS
1121 // tfm - TFMFONTS, TEXFONTS
1122 // This means that to use kpsewhich in the best possible way we
1123 // should help it by setting additional path in the approp. envir.var.
1124 string const kpsecmd = "kpsewhich " + fil;
1126 cmd_ret const c = runCommand(kpsecmd);
1128 LYXERR(Debug::LATEX, "kpse status = " << c.first << '\n'
1129 << "kpse result = `" << rtrim(c.second, "\n\r") << '\'');
1131 return FileName(rtrim(to_utf8(from_filesystem8bit(c.second)), "\n\r"));
1137 int compare_timestamps(FileName const & file1, FileName const & file2)
1139 // If the original is newer than the copy, then copy the original
1140 // to the new directory.
1143 if (file1.exists() && file2.exists()) {
1144 double const tmp = difftime(file1.lastModified(), file2.lastModified());
1146 cmp = tmp > 0 ? 1 : -1;
1148 } else if (file1.exists()) {
1150 } else if (file2.exists()) {
1158 bool prefs2prefs(FileName const & filename, FileName const & tempfile, bool lfuns)
1160 FileName const script = libFileSearch("scripts", "prefs2prefs.py");
1161 if (script.empty()) {
1162 LYXERR0("Could not find bind file conversion "
1163 "script prefs2prefs.py.");
1167 ostringstream command;
1168 command << os::python() << ' ' << quoteName(script.toFilesystemEncoding())
1169 << ' ' << (lfuns ? "-l" : "-p") << ' '
1170 << quoteName(filename.toFilesystemEncoding())
1171 << ' ' << quoteName(tempfile.toFilesystemEncoding());
1172 string const command_str = command.str();
1174 LYXERR(Debug::FILES, "Running `" << command_str << '\'');
1176 cmd_ret const ret = runCommand(command_str);
1177 if (ret.first != 0) {
1178 LYXERR0("Could not run file conversion script prefs2prefs.py.");
1185 bool configFileNeedsUpdate(string const & file)
1187 // We cannot initialize configure_script directly because the package
1188 // is not initialized yet when static objects are constructed.
1189 static FileName configure_script;
1190 static bool firstrun = true;
1193 FileName(addName(package().system_support().absFileName(),
1199 FileName(addName(package().user_support().absFileName(), file));
1200 return !absfile.exists()
1201 || configure_script.lastModified() > absfile.lastModified();
1205 int fileLock(const char * lock_file)
1208 #if defined(HAVE_LOCKF)
1209 fd = open(lock_file, O_CREAT|O_APPEND|O_SYNC|O_RDWR, 0666);
1212 if (lockf(fd, F_LOCK, 0) != 0) {
1221 void fileUnlock(int fd, const char * /* lock_file*/)
1223 #if defined(HAVE_LOCKF)
1225 if (lockf(fd, F_ULOCK, 0))
1226 LYXERR0("Can't unlock the file.");
1232 } //namespace support