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"
68 bool isLyXFileName(string const & filename)
70 return suffixIs(ascii_lowercase(filename), ".lyx");
74 bool isSGMLFileName(string const & filename)
76 return suffixIs(ascii_lowercase(filename), ".sgml");
80 bool isValidLaTeXFileName(string const & filename)
82 string const invalid_chars("#%\"");
83 return filename.find_first_of(invalid_chars) == string::npos;
87 bool isValidDVIFileName(string const & filename)
89 string const invalid_chars("${}()[]^");
90 return filename.find_first_of(invalid_chars) == string::npos;
94 string const latex_path(string const & original_path,
95 latex_path_extension extension,
98 // On cygwin, we may need windows or posix style paths.
99 string path = os::latex_path(original_path);
100 path = subst(path, "~", "\\string~");
101 if (path.find(' ') != string::npos) {
102 // We can't use '"' because " is sometimes active (e.g. if
103 // babel is loaded with the "german" option)
104 if (extension == EXCLUDE_EXTENSION) {
105 // changeExtension calls os::internal_path internally
106 // so don't use it to remove the extension.
107 string const ext = getExtension(path);
108 string const base = ext.empty() ?
110 path.substr(0, path.length() - ext.length() - 1);
111 // changeExtension calls os::internal_path internally
112 // so don't use it to re-add the extension.
113 path = "\\string\"" + base + "\\string\"." + ext;
115 path = "\\string\"" + path + "\\string\"";
119 if (dots != ESCAPE_DOTS)
122 // Replace dots with the lyxdot macro, but only in the file name,
123 // not the directory part.
124 // addName etc call os::internal_path internally
125 // so don't use them for path manipulation
126 // The directory separator is always '/' for LaTeX.
127 string::size_type pos = path.rfind('/');
128 if (pos == string::npos)
129 return subst(path, ".", "\\lyxdot ");
130 return path.substr(0, pos) + subst(path.substr(pos), ".", "\\lyxdot ");
134 // Substitutes spaces with underscores in filename (and path)
135 FileName const makeLatexName(FileName const & file)
137 string name = file.onlyFileName();
138 string const path = file.onlyPath().absFileName() + "/";
140 // ok so we scan through the string twice, but who cares.
141 // FIXME: in Unicode time this will break for sure! There is
142 // a non-latin world out there...
143 string const keep = "abcdefghijklmnopqrstuvwxyz"
144 "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
145 "@!'()*+,-./0123456789:;<=>?[]`|";
147 string::size_type pos = 0;
148 while ((pos = name.find_first_not_of(keep, pos)) != string::npos)
151 FileName latex_name(path + name);
152 latex_name.changeExtension(".tex");
157 string const quoteName(string const & name, quote_style style)
161 // This does not work on native Windows for filenames
162 // containing the following characters < > : " / \ | ? *
163 // Moreover, it can't be made to work, as, according to
164 // http://msdn.microsoft.com/en-us/library/aa365247(VS.85).aspx
165 // those are reserved characters, and thus are forbidden.
166 // Please, also note that the command-line parser in
167 // ForkedCall::generateChild cannot deal with filenames
168 // containing " or ', therefore we don't pass user filenames
169 // to child processes if possible. We store them in a python
170 // script instead, where we don't have these limitations.
172 return (os::shell() == os::UNIX) ?
173 '\'' + subst(name, "'", "\'\\\'\'") + '\'' :
176 // According to the QProcess parser, a single double
177 // quote is represented by three consecutive ones.
178 // Here we simply escape the double quote and let our
179 // simple parser in Systemcall.cpp do the substitution.
180 return '"' + subst(name, "\"", "\\\"") + '"';
183 return "\"" + subst(subst(name, "\\", "\\\\"), "\"", "\\\"")
186 // shut up stupid compiler
192 // Uses a string of paths separated by ";"s to find a file to open.
193 // Can't cope with pathnames with a ';' in them. Returns full path to file.
194 // If path entry begins with $$LyX/, use system_lyxdir
195 // If path entry begins with $$User/, use user_lyxdir
196 // Example: "$$User/doc;$$LyX/doc"
197 FileName const fileOpenSearch(string const & path, string const & name,
202 bool notfound = true;
203 string tmppath = split(path, path_element, ';');
205 while (notfound && !path_element.empty()) {
206 path_element = os::internal_path(path_element);
207 if (!suffixIs(path_element, '/'))
209 path_element = subst(path_element, "$$LyX",
210 package().system_support().absFileName());
211 path_element = subst(path_element, "$$User",
212 package().user_support().absFileName());
214 real_file = fileSearch(path_element, name, ext);
216 if (real_file.empty()) {
218 tmppath = split(tmppath, path_element, ';');
219 } while (!tmppath.empty() && path_element.empty());
229 // Returns the real name of file name in directory path, with optional
231 FileName const fileSearch(string const & path, string const & name,
232 string const & ext, search_mode mode)
234 // if `name' is an absolute path, we ignore the setting of `path'
235 // Expand Environmentvariables in 'name'
236 string const tmpname = replaceEnvironmentPath(name);
237 FileName fullname(makeAbsPath(tmpname, path));
238 // search first without extension, then with it.
239 if (fullname.isReadableFile())
243 return mode == may_not_exist ? fullname : FileName();
244 // Only add the extension if it is not already the extension of
246 if (getExtension(fullname.absFileName()) != ext)
247 fullname = FileName(addExtension(fullname.absFileName(), ext));
248 if (fullname.isReadableFile() || mode == may_not_exist)
254 // Search the file name.ext in the subdirectory dir of
256 // 2) build_lyxdir (if not empty)
258 FileName const libFileSearch(string const & dir, string const & name,
261 FileName fullname = fileSearch(addPath(package().user_support().absFileName(), dir),
263 if (!fullname.empty())
266 if (!package().build_support().empty())
267 fullname = fileSearch(addPath(package().build_support().absFileName(), dir),
269 if (!fullname.empty())
272 return fileSearch(addPath(package().system_support().absFileName(), dir), name, ext);
276 FileName const i18nLibFileSearch(string const & dir, string const & name,
279 /* The highest priority value is the `LANGUAGE' environment
280 variable. But we don't use the value if the currently
281 selected locale is the C locale. This is a GNU extension.
283 Otherwise, w use a trick to guess what support/gettext.has done:
284 each po file is able to tell us its name. (JMarc)
287 string lang = getGuiMessages().language();
288 string const language = getEnv("LANGUAGE");
289 if (!lang.empty() && !language.empty())
293 lang = split(lang, l, ':');
296 // First try with the full name
297 tmp = libFileSearch(addPath(dir, l), name, ext);
301 // Then the name without country code
302 string const shortl = token(l, '_', 0);
304 tmp = libFileSearch(addPath(dir, shortl), name, ext);
310 // For compatibility, to be removed later (JMarc)
311 tmp = libFileSearch(dir, token(l, '_', 0) + '_' + name,
314 lyxerr << "i18nLibFileSearch: File `" << tmp
315 << "' has been found by the old method" <<endl;
319 lang = split(lang, l, ':');
322 return libFileSearch(dir, name, ext);
326 FileName const imageLibFileSearch(string & dir, string const & name,
329 if (!lyx::lyxrc.icon_set.empty()) {
330 string const imagedir = addPath(dir, lyx::lyxrc.icon_set);
331 FileName const fn = libFileSearch(imagedir, name, ext);
337 return libFileSearch(dir, name, ext);
341 string const commandPrep(string const & command_in)
343 static string const token_scriptpath = "$$s/";
344 string const python_call = "python -tt";
346 string command = command_in;
347 if (prefixIs(command_in, python_call))
348 command = os::python() + command_in.substr(python_call.length());
350 // Find the starting position of "$$s/"
351 string::size_type const pos1 = command.find(token_scriptpath);
352 if (pos1 == string::npos)
354 // Find the end of the "$$s/some_subdir/some_script" word within
355 // command. Assumes that the script name does not contain spaces.
356 string::size_type const start_script = pos1 + 4;
357 string::size_type const pos2 = command.find(' ', start_script);
358 string::size_type const size_script = pos2 == string::npos?
359 (command.size() - start_script) : pos2 - start_script;
361 // Does this script file exist?
362 string const script =
363 libFileSearch(".", command.substr(start_script, size_script)).absFileName();
365 if (script.empty()) {
366 // Replace "$$s/" with ""
367 command.erase(pos1, 4);
369 quote_style style = quote_shell;
370 if (prefixIs(command, os::python()))
371 style = quote_python;
373 // Replace "$$s/foo/some_script" with "<path to>/some_script".
374 string::size_type const size_replace = size_script + 4;
375 command.replace(pos1, size_replace, quoteName(script, style));
382 static string createTempFile(QString const & mask)
384 // FIXME: This is not safe. QTemporaryFile creates a file in open(),
385 // but the file is deleted when qt_tmp goes out of scope.
386 // Therefore the next call to createTempFile() may create the
387 // same file again. To make this safe the QTemporaryFile object
388 // needs to be kept for the whole life time of the temp file name.
389 // This could be achieved by creating a class TempDir (like
390 // TempFile, but using a currentlky non-existing
391 // QTemporaryDirectory object).
392 QTemporaryFile qt_tmp(mask + ".XXXXXXXXXXXX");
394 string const temp_file = fromqstr(qt_tmp.fileName());
395 LYXERR(Debug::FILES, "Temporary file `" << temp_file << "' created.");
398 LYXERR(Debug::FILES, "Unable to create temporary file with following template: "
399 << qt_tmp.fileTemplate());
404 static FileName createTmpDir(FileName const & tempdir, string const & mask)
406 LYXERR(Debug::FILES, "createTmpDir: tempdir=`" << tempdir << "'\n"
407 << "createTmpDir: mask=`" << mask << '\'');
409 QFileInfo tmp_fi(QDir(toqstr(tempdir.absFileName())), toqstr(mask));
410 FileName const tmpfl(createTempFile(tmp_fi.absoluteFilePath()));
412 if (tmpfl.empty() || !tmpfl.createDirectory(0700)) {
413 LYXERR0("LyX could not create temporary directory in " << tempdir
422 FileName const createLyXTmpDir(FileName const & deflt)
424 if (deflt.empty() || deflt == package().system_temp_dir())
425 return createTmpDir(package().system_temp_dir(), "lyx_tmpdir");
427 if (deflt.createDirectory(0777))
430 if (deflt.isDirWritable()) {
431 // deflt could not be created because it
432 // did exist already, so let's create our own
434 return createTmpDir(deflt, "lyx_tmpdir");
436 // some other error occured.
437 return createTmpDir(package().system_temp_dir(), "lyx_tmpdir");
442 // Strip filename from path name
443 string const onlyPath(string const & filename)
445 // If empty filename, return empty
446 if (filename.empty())
449 // Find last / or start of filename
450 size_t j = filename.rfind('/');
451 return j == string::npos ? "./" : filename.substr(0, j + 1);
455 // Convert relative path into absolute path based on a basepath.
456 // If relpath is absolute, just use that.
457 // If basepath is empty, use CWD as base.
458 // Note that basePath can be a relative path, in the sense that it may
459 // not begin with "/" (e.g.), but it should NOT contain such constructs
461 // FIXME It might be nice if the code didn't simply assume that.
462 FileName const makeAbsPath(string const & relPath, string const & basePath)
464 // checks for already absolute path
465 if (FileName::isAbsolute(relPath))
466 return FileName(relPath);
468 // Copies given paths
469 string tempRel = os::internal_path(relPath);
470 // Since TempRel is NOT absolute, we can safely replace "//" with "/"
471 tempRel = subst(tempRel, "//", "/");
475 if (FileName::isAbsolute(basePath))
478 tempBase = addPath(FileName::getcwd().absFileName(), basePath);
480 // Handle /./ at the end of the path
481 while (suffixIs(tempBase, "/./"))
482 tempBase.erase(tempBase.length() - 2);
484 // processes relative path
485 string rTemp = tempRel;
488 // Check for a leading "~"
490 rTemp = split(rTemp, temp, '/');
492 tempBase = Package::get_home_dir().absFileName();
497 while (!rTemp.empty()) {
499 rTemp = split(rTemp, temp, '/');
501 if (temp == ".") continue;
503 // Remove one level of TempBase
504 if (tempBase.length() <= 1) {
505 //this is supposed to be an absolute path, so...
509 //erase a trailing slash if there is one
510 if (suffixIs(tempBase, "/"))
511 tempBase.erase(tempBase.length() - 1, string::npos);
513 string::size_type i = tempBase.length() - 1;
514 while (i > 0 && tempBase[i] != '/')
517 tempBase.erase(i, string::npos);
520 } else if (temp.empty() && !rTemp.empty()) {
521 tempBase = os::current_root() + rTemp;
524 // Add this piece to TempBase
525 if (!suffixIs(tempBase, '/'))
531 // returns absolute path
532 return FileName(tempBase);
536 // Correctly append filename to the pathname.
537 // If pathname is '.', then don't use pathname.
538 // Chops any path of filename.
539 string const addName(string const & path, string const & fname)
541 string const basename = onlyFileName(fname);
544 if (path != "." && path != "./" && !path.empty()) {
545 buf = os::internal_path(path);
546 if (!suffixIs(path, '/'))
550 return buf + basename;
554 // Strips path from filename
555 string const onlyFileName(string const & fname)
560 string::size_type j = fname.rfind('/');
561 if (j == string::npos) // no '/' in fname
565 return fname.substr(j + 1);
569 // Create absolute path. If impossible, don't do anything
570 // Supports ./ and ~/. Later we can add support for ~logname/. (Asger)
571 string const expandPath(string const & path)
573 // checks for already absolute path
574 string rTemp = replaceEnvironmentPath(path);
575 if (FileName::isAbsolute(rTemp))
579 string const copy = rTemp;
582 rTemp = split(rTemp, temp, '/');
585 return FileName::getcwd().absFileName() + '/' + rTemp;
588 return Package::get_home_dir().absFileName() + '/' + rTemp;
591 return makeAbsPath(copy).absFileName();
593 // Don't know how to handle this
598 // Search the string for ${VAR} and $VAR and replace VAR using getenv.
599 string const replaceEnvironmentPath(string const & path)
601 // ${VAR} is defined as
602 // $\{[A-Za-z_][A-Za-z_0-9]*\}
603 static string const envvar_br = "[$]\\{([A-Za-z_][A-Za-z_0-9]*)\\}";
605 // $VAR is defined as:
606 // $[A-Za-z_][A-Za-z_0-9]*
607 static string const envvar = "[$]([A-Za-z_][A-Za-z_0-9]*)";
609 static regex const envvar_br_re("(.*)" + envvar_br + "(.*)");
610 static regex const envvar_re("(.*)" + envvar + "(.*)");
611 string result = path;
614 if (!regex_match(result, what, envvar_br_re)) {
615 if (!regex_match(result, what, envvar_re))
618 string env_var = getEnv(what.str(2));
619 result = what.str(1) + env_var + what.str(3);
625 // Return a command prefix for setting the environment of the TeX engine.
626 string latexEnvCmdPrefix(string const & path)
628 if (path.empty() || lyxrc.texinputs_prefix.empty())
631 string const texinputs_prefix = os::latex_path_list(
632 replaceCurdirPath(path, lyxrc.texinputs_prefix));
633 string const sep = string(1, os::path_separator(os::TEXENGINE));
634 string const texinputs = getEnv("TEXINPUTS");
636 if (os::shell() == os::UNIX)
637 return "env TEXINPUTS=\"." + sep + texinputs_prefix
638 + sep + texinputs + "\" ";
640 return "cmd /d /c set TEXINPUTS=." + sep + texinputs_prefix
641 + sep + texinputs + "&";
645 // Replace current directory in all elements of a path list with a given path.
646 string const replaceCurdirPath(string const & path, string const & pathlist)
648 string const oldpathlist = replaceEnvironmentPath(pathlist);
649 char const sep = os::path_separator();
652 for (size_t i = 0, k = 0; i != string::npos; k = i) {
653 i = oldpathlist.find(sep, i);
654 string p = oldpathlist.substr(k, i - k);
655 if (FileName::isAbsolute(p)) {
661 } else if (prefixIs(p, "./")) {
663 while (p[offset] == '/')
666 newpathlist += addPath(path, p.substr(offset));
667 if (suffixIs(p, "//"))
670 if (i != string::npos) {
672 // Stop here if the last element is empty
673 if (++i == oldpathlist.length())
681 // Make relative path out of two absolute paths
682 docstring const makeRelPath(docstring const & abspath, docstring const & basepath)
683 // Makes relative path out of absolute path. If it is deeper than basepath,
684 // it's easy. If basepath and abspath share something (they are all deeper
685 // than some directory), it'll be rendered using ..'s. If they are completely
686 // different, then the absolute path will be used as relative path.
688 docstring::size_type const abslen = abspath.length();
689 docstring::size_type const baselen = basepath.length();
691 docstring::size_type i = os::common_path(abspath, basepath);
694 // actually no match - cannot make it relative
698 // Count how many dirs there are in basepath above match
699 // and append as many '..''s into relpath
701 docstring::size_type j = i;
702 while (j < baselen) {
703 if (basepath[j] == '/') {
704 if (j + 1 == baselen)
711 // Append relative stuff from common directory to abspath
712 if (abspath[i] == '/')
714 for (; i < abslen; ++i)
717 if (suffixIs(buf, '/'))
718 buf.erase(buf.length() - 1);
719 // Substitute empty with .
726 // Append sub-directory(ies) to a path in an intelligent way
727 string const addPath(string const & path, string const & path_2)
730 string const path2 = os::internal_path(path_2);
732 if (!path.empty() && path != "." && path != "./") {
733 buf = os::internal_path(path);
734 if (path[path.length() - 1] != '/')
738 if (!path2.empty()) {
739 string::size_type const p2start = path2.find_first_not_of('/');
740 string::size_type const p2end = path2.find_last_not_of('/');
741 string const tmp = path2.substr(p2start, p2end - p2start + 1);
748 string const changeExtension(string const & oldname, string const & extension)
750 string::size_type const last_slash = oldname.rfind('/');
751 string::size_type last_dot = oldname.rfind('.');
752 if (last_dot < last_slash && last_slash != string::npos)
753 last_dot = string::npos;
756 // Make sure the extension starts with a dot
757 if (!extension.empty() && extension[0] != '.')
758 ext= '.' + extension;
762 return os::internal_path(oldname.substr(0, last_dot) + ext);
766 string const removeExtension(string const & name)
768 return changeExtension(name, string());
772 string const addExtension(string const & name, string const & extension)
774 if (!extension.empty() && extension[0] != '.')
775 return name + '.' + extension;
776 return name + extension;
780 /// Return the extension of the file (not including the .)
781 string const getExtension(string const & name)
783 string::size_type const last_slash = name.rfind('/');
784 string::size_type const last_dot = name.rfind('.');
785 if (last_dot != string::npos &&
786 (last_slash == string::npos || last_dot > last_slash))
787 return name.substr(last_dot + 1,
788 name.length() - (last_dot + 1));
794 string const unzippedFileName(string const & zipped_file)
796 string const ext = getExtension(zipped_file);
797 if (ext == "gz" || ext == "z" || ext == "Z")
798 return changeExtension(zipped_file, string());
799 return onlyPath(zipped_file) + "unzipped_" + onlyFileName(zipped_file);
803 FileName const unzipFile(FileName const & zipped_file, string const & unzipped_file)
805 FileName const tempfile = FileName(unzipped_file.empty() ?
806 unzippedFileName(zipped_file.toFilesystemEncoding()) :
809 string const command = "gunzip -c " +
810 zipped_file.toFilesystemEncoding() + " > " +
811 tempfile.toFilesystemEncoding();
813 one.startscript(Systemcall::Wait, command);
814 // test that command was executed successfully (anon)
815 // yes, please do. (Lgb)
820 docstring const makeDisplayPath(string const & path, unsigned int threshold)
824 // If file is from LyXDir, display it as if it were relative.
825 string const system = package().system_support().absFileName();
826 if (prefixIs(str, system) && str != system)
827 return from_utf8("[" + str.erase(0, system.length()) + "]");
829 // replace /home/blah with ~/
830 string const home = Package::get_home_dir().absFileName();
831 if (!home.empty() && prefixIs(str, home))
832 str = subst(str, home, "~");
834 if (str.length() <= threshold)
835 return from_utf8(os::external_path(str));
837 string const prefix = ".../";
838 docstring dstr = from_utf8(str);
841 while (dstr.length() > threshold)
842 dstr = split(dstr, temp, '/');
844 // Did we shorten everything away?
846 // Yes, filename itself is too long.
847 // Pick the start and the end of the filename.
848 dstr = from_utf8(onlyFileName(path));
849 docstring const head = dstr.substr(0, threshold / 2 - 3);
851 docstring::size_type len = dstr.length();
852 docstring const tail =
853 dstr.substr(len - threshold / 2 - 2, len - 1);
854 dstr = head + from_ascii("...") + tail;
857 return from_utf8(os::external_path(prefix + to_utf8(dstr)));
862 bool readLink(FileName const & file, FileName & link)
864 string const encoded = file.toFilesystemEncoding();
865 #ifdef HAVE_DEF_PATH_MAX
866 char linkbuffer[PATH_MAX + 1];
867 ssize_t const nRead = ::readlink(encoded.c_str(),
868 linkbuffer, sizeof(linkbuffer) - 1);
871 linkbuffer[nRead] = '\0'; // terminator
873 vector<char> buf(1024);
877 nRead = ::readlink(encoded.c_str(), &buf[0], buf.size() - 1);
881 if (static_cast<size_t>(nRead) < buf.size() - 1) {
884 buf.resize(buf.size() * 2);
886 buf[nRead] = '\0'; // terminator
887 const char * linkbuffer = &buf[0];
889 link = makeAbsPath(linkbuffer, onlyPath(file.absFileName()));
893 bool readLink(FileName const &, FileName &)
900 cmd_ret const runCommand(string const & cmd)
902 // FIXME: replace all calls to RunCommand with ForkedCall
903 // (if the output is not needed) or the code in ISpell.cpp
904 // (if the output is needed).
906 // One question is if we should use popen or
907 // create our own popen based on fork, exec, pipe
908 // of course the best would be to have a
909 // pstream (process stream), with the
910 // variants ipstream, opstream
915 PROCESS_INFORMATION process;
916 SECURITY_ATTRIBUTES security;
919 bool err2out = false;
921 string const infile = trim(split(cmd, command, '<'), " \"");
922 command = rtrim(command);
923 if (suffixIs(command, "2>&1")) {
924 command = rtrim(command, "2>&1");
927 string const cmdarg = "/d /c " + command;
928 string const comspec = getEnv("COMSPEC");
930 security.nLength = sizeof(SECURITY_ATTRIBUTES);
931 security.bInheritHandle = TRUE;
932 security.lpSecurityDescriptor = NULL;
934 if (CreatePipe(&in, &out, &security, 0)) {
935 memset(&startup, 0, sizeof(STARTUPINFO));
936 memset(&process, 0, sizeof(PROCESS_INFORMATION));
938 startup.cb = sizeof(STARTUPINFO);
939 startup.dwFlags = STARTF_USESTDHANDLES;
941 startup.hStdError = err2out ? out : GetStdHandle(STD_ERROR_HANDLE);
942 startup.hStdInput = infile.empty()
943 ? GetStdHandle(STD_INPUT_HANDLE)
944 : CreateFile(infile.c_str(), GENERIC_READ,
945 FILE_SHARE_READ, &security, OPEN_EXISTING,
946 FILE_ATTRIBUTE_NORMAL, NULL);
947 startup.hStdOutput = out;
949 if (startup.hStdInput != INVALID_HANDLE_VALUE &&
950 CreateProcess(comspec.c_str(), (LPTSTR)cmdarg.c_str(),
951 &security, &security, TRUE, CREATE_NO_WINDOW,
952 0, 0, &startup, &process)) {
954 CloseHandle(process.hThread);
955 fno = _open_osfhandle((long)in, _O_RDONLY);
957 inf = _fdopen(fno, "r");
960 #elif defined (HAVE_POPEN)
961 FILE * inf = ::popen(cmd.c_str(), os::popen_read_mode());
962 #elif defined (HAVE__POPEN)
963 FILE * inf = ::_popen(cmd.c_str(), os::popen_read_mode());
965 #error No popen() function.
968 // (Claus Hentschel) Check if popen was successful ;-)
970 lyxerr << "RunCommand:: could not start child process" << endl;
971 return make_pair(-1, string());
977 ret += static_cast<char>(c);
982 WaitForSingleObject(process.hProcess, INFINITE);
984 CloseHandle(startup.hStdInput);
985 CloseHandle(process.hProcess);
986 int const pret = fclose(inf);
987 #elif defined (HAVE_PCLOSE)
988 int const pret = pclose(inf);
989 #elif defined (HAVE__PCLOSE)
990 int const pret = _pclose(inf);
992 #error No pclose() function.
996 perror("RunCommand:: could not terminate child process");
998 return make_pair(pret, ret);
1002 FileName const findtexfile(string const & fil, string const & /*format*/)
1004 /* There is no problem to extend this function too use other
1005 methods to look for files. It could be setup to look
1006 in environment paths and also if wanted as a last resort
1007 to a recursive find. One of the easier extensions would
1008 perhaps be to use the LyX file lookup methods. But! I am
1009 going to implement this until I see some demand for it.
1013 // If the file can be found directly, we just return a
1014 // absolute path version of it.
1015 FileName const absfile(makeAbsPath(fil));
1016 if (absfile.exists())
1019 // Now we try to find it using kpsewhich.
1020 // It seems from the kpsewhich manual page that it is safe to use
1021 // kpsewhich without --format: "When the --format option is not
1022 // given, the search path used when looking for a file is inferred
1023 // from the name given, by looking for a known extension. If no
1024 // known extension is found, the search path for TeX source files
1026 // However, we want to take advantage of the format sine almost all
1027 // the different formats has environment variables that can be used
1028 // to controll which paths to search. f.ex. bib looks in
1029 // BIBINPUTS and TEXBIB. Small list follows:
1030 // bib - BIBINPUTS, TEXBIB
1032 // graphic/figure - TEXPICTS, TEXINPUTS
1033 // ist - TEXINDEXSTYLE, INDEXSTYLE
1034 // pk - PROGRAMFONTS, PKFONTS, TEXPKS, GLYPHFONTS, TEXFONTS
1036 // tfm - TFMFONTS, TEXFONTS
1037 // This means that to use kpsewhich in the best possible way we
1038 // should help it by setting additional path in the approp. envir.var.
1039 string const kpsecmd = "kpsewhich " + fil;
1041 cmd_ret const c = runCommand(kpsecmd);
1043 LYXERR(Debug::LATEX, "kpse status = " << c.first << '\n'
1044 << "kpse result = `" << rtrim(c.second, "\n\r") << '\'');
1046 return FileName(rtrim(to_utf8(from_filesystem8bit(c.second)), "\n\r"));
1052 int compare_timestamps(FileName const & file1, FileName const & file2)
1054 // If the original is newer than the copy, then copy the original
1055 // to the new directory.
1058 if (file1.exists() && file2.exists()) {
1059 double const tmp = difftime(file1.lastModified(), file2.lastModified());
1061 cmp = tmp > 0 ? 1 : -1;
1063 } else if (file1.exists()) {
1065 } else if (file2.exists()) {
1073 bool prefs2prefs(FileName const & filename, FileName const & tempfile, bool lfuns)
1075 FileName const script = libFileSearch("scripts", "prefs2prefs.py");
1076 if (script.empty()) {
1077 LYXERR0("Could not find bind file conversion "
1078 "script prefs2prefs.py.");
1082 ostringstream command;
1083 command << os::python() << ' ' << quoteName(script.toFilesystemEncoding())
1084 << ' ' << (lfuns ? "-l" : "-p") << ' '
1085 << quoteName(filename.toFilesystemEncoding())
1086 << ' ' << quoteName(tempfile.toFilesystemEncoding());
1087 string const command_str = command.str();
1089 LYXERR(Debug::FILES, "Running `" << command_str << '\'');
1091 cmd_ret const ret = runCommand(command_str);
1092 if (ret.first != 0) {
1093 LYXERR0("Could not run file conversion script prefs2prefs.py.");
1099 int fileLock(const char * lock_file)
1102 #if defined(HAVE_LOCKF)
1103 fd = open(lock_file, O_CREAT|O_APPEND|O_SYNC|O_RDWR, 0666);
1104 if (lockf(fd, F_LOCK, 0) != 0) {
1112 void fileUnlock(int fd, const char * /* lock_file*/)
1114 #if defined(HAVE_LOCKF)
1116 if (lockf(fd, F_ULOCK, 0))
1117 LYXERR0("Can't unlock the file.");
1123 } //namespace support