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"
41 #include <QTemporaryFile>
43 #include "support/lassert.h"
44 #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 int iconScaleFactor(FileName const & image)
421 int imgsize = QImage(toqstr(image.absFileName())).height();
428 string dir = "images";
429 FileName const fn = imageLibFileSearch(dir, "iconsize.png");
431 iconsize = QImage(toqstr(fn.absFileName())).height();
433 return (100 * iconsize + imgsize / 2)/imgsize;
437 string const commandPrep(string const & command_in)
439 static string const token_scriptpath = "$$s/";
440 string const python_call = "python -tt";
442 string command = command_in;
443 if (prefixIs(command_in, python_call))
444 command = os::python() + command_in.substr(python_call.length());
446 // Find the starting position of "$$s/"
447 string::size_type const pos1 = command.find(token_scriptpath);
448 if (pos1 == string::npos)
450 // Find the end of the "$$s/some_subdir/some_script" word within
451 // command. Assumes that the script name does not contain spaces.
452 string::size_type const start_script = pos1 + 4;
453 string::size_type const pos2 = command.find(' ', start_script);
454 string::size_type const size_script = pos2 == string::npos?
455 (command.size() - start_script) : pos2 - start_script;
457 // Does this script file exist?
458 string const script =
459 libFileSearch(".", command.substr(start_script, size_script)).absFileName();
461 if (script.empty()) {
462 // Replace "$$s/" with ""
463 command.erase(pos1, 4);
465 quote_style style = quote_shell;
466 if (prefixIs(command, os::python()))
467 style = quote_python;
469 // Replace "$$s/foo/some_script" with "<path to>/some_script".
470 string::size_type const size_replace = size_script + 4;
471 command.replace(pos1, size_replace, quoteName(script, style));
478 static string createTempFile(QString const & mask)
480 // FIXME: This is not safe. QTemporaryFile creates a file in open(),
481 // but the file is deleted when qt_tmp goes out of scope.
482 // Therefore the next call to createTempFile() may create the
483 // same file again. To make this safe the QTemporaryFile object
484 // needs to be kept for the whole life time of the temp file name.
485 // This could be achieved by creating a class TempDir (like
486 // TempFile, but using a currentlky non-existing
487 // QTemporaryDirectory object).
488 QTemporaryFile qt_tmp(mask + ".XXXXXXXXXXXX");
490 string const temp_file = fromqstr(qt_tmp.fileName());
491 LYXERR(Debug::FILES, "Temporary file `" << temp_file << "' created.");
494 LYXERR(Debug::FILES, "Unable to create temporary file with following template: "
495 << qt_tmp.fileTemplate());
500 static FileName createTmpDir(FileName const & tempdir, string const & mask)
502 LYXERR(Debug::FILES, "createTmpDir: tempdir=`" << tempdir << "'\n"
503 << "createTmpDir: mask=`" << mask << '\'');
505 QFileInfo tmp_fi(QDir(toqstr(tempdir.absFileName())), toqstr(mask));
506 FileName const tmpfl(createTempFile(tmp_fi.absoluteFilePath()));
508 if (tmpfl.empty() || !tmpfl.createDirectory(0700)) {
509 LYXERR0("LyX could not create temporary directory in " << tempdir
518 FileName const createLyXTmpDir(FileName const & deflt)
520 if (deflt.empty() || deflt == package().system_temp_dir())
521 return createTmpDir(package().system_temp_dir(), "lyx_tmpdir");
523 if (deflt.createDirectory(0777))
526 if (deflt.isDirWritable()) {
527 // deflt could not be created because it
528 // did exist already, so let's create our own
530 return createTmpDir(deflt, "lyx_tmpdir");
532 // some other error occurred.
533 return createTmpDir(package().system_temp_dir(), "lyx_tmpdir");
538 // Strip filename from path name
539 string const onlyPath(string const & filename)
541 // If empty filename, return empty
542 if (filename.empty())
545 // Find last / or start of filename
546 size_t j = filename.rfind('/');
547 return j == string::npos ? "./" : filename.substr(0, j + 1);
551 // Convert relative path into absolute path based on a basepath.
552 // If relpath is absolute, just use that.
553 // If basepath is empty, use CWD as base.
554 // Note that basePath can be a relative path, in the sense that it may
555 // not begin with "/" (e.g.), but it should NOT contain such constructs
557 // FIXME It might be nice if the code didn't simply assume that.
558 FileName const makeAbsPath(string const & relPath, string const & basePath)
560 // checks for already absolute path
561 if (FileName::isAbsolute(relPath))
562 return FileName(relPath);
564 // Copies given paths
565 string tempRel = os::internal_path(relPath);
566 // Since TempRel is NOT absolute, we can safely replace "//" with "/"
567 tempRel = subst(tempRel, "//", "/");
571 if (FileName::isAbsolute(basePath))
574 tempBase = addPath(FileName::getcwd().absFileName(), basePath);
576 // Handle /./ at the end of the path
577 while (suffixIs(tempBase, "/./"))
578 tempBase.erase(tempBase.length() - 2);
580 // processes relative path
581 string rTemp = tempRel;
584 // Check for a leading "~"
586 rTemp = split(rTemp, temp, '/');
588 tempBase = Package::get_home_dir().absFileName();
593 while (!rTemp.empty()) {
595 rTemp = split(rTemp, temp, '/');
597 if (temp == ".") continue;
599 // Remove one level of TempBase
600 if (tempBase.length() <= 1) {
601 //this is supposed to be an absolute path, so...
605 //erase a trailing slash if there is one
606 if (suffixIs(tempBase, "/"))
607 tempBase.erase(tempBase.length() - 1, string::npos);
609 string::size_type i = tempBase.length() - 1;
610 while (i > 0 && tempBase[i] != '/')
613 tempBase.erase(i, string::npos);
616 } else if (temp.empty() && !rTemp.empty()) {
617 tempBase = os::current_root() + rTemp;
620 // Add this piece to TempBase
621 if (!suffixIs(tempBase, '/'))
627 // returns absolute path
628 return FileName(tempBase);
632 // Correctly append filename to the pathname.
633 // If pathname is '.', then don't use pathname.
634 // Chops any path of filename.
635 string const addName(string const & path, string const & fname)
637 string const basename = onlyFileName(fname);
640 if (path != "." && path != "./" && !path.empty()) {
641 buf = os::internal_path(path);
642 if (!suffixIs(path, '/'))
646 return buf + basename;
650 // Strips path from filename
651 string const onlyFileName(string const & fname)
656 string::size_type j = fname.rfind('/');
657 if (j == string::npos) // no '/' in fname
661 return fname.substr(j + 1);
665 // Create absolute path. If impossible, don't do anything
666 // Supports ./ and ~/. Later we can add support for ~logname/. (Asger)
667 string const expandPath(string const & path)
669 // checks for already absolute path
670 string rTemp = replaceEnvironmentPath(path);
671 if (FileName::isAbsolute(rTemp))
675 string const copy = rTemp;
678 rTemp = split(rTemp, temp, '/');
681 return FileName::getcwd().absFileName() + '/' + rTemp;
684 return Package::get_home_dir().absFileName() + '/' + rTemp;
687 return makeAbsPath(copy).absFileName();
689 // Don't know how to handle this
694 // Search the string for ${VAR} and $VAR and replace VAR using getenv.
695 string const replaceEnvironmentPath(string const & path)
697 // ${VAR} is defined as
698 // $\{[A-Za-z_][A-Za-z_0-9]*\}
699 static string const envvar_br = "[$]\\{([A-Za-z_][A-Za-z_0-9]*)\\}";
701 // $VAR is defined as:
702 // $[A-Za-z_][A-Za-z_0-9]*
703 static string const envvar = "[$]([A-Za-z_][A-Za-z_0-9]*)";
705 static regex const envvar_br_re("(.*)" + envvar_br + "(.*)");
706 static regex const envvar_re("(.*)" + envvar + "(.*)");
707 string result = path;
710 if (!regex_match(result, what, envvar_br_re)) {
711 if (!regex_match(result, what, envvar_re))
714 string env_var = getEnv(what.str(2));
715 result = what.str(1) + env_var + what.str(3);
721 // Return a command prefix for setting the environment of the TeX engine.
722 string latexEnvCmdPrefix(string const & path)
724 if (path.empty() || lyxrc.texinputs_prefix.empty())
727 string const texinputs_prefix = os::latex_path_list(
728 replaceCurdirPath(path, lyxrc.texinputs_prefix));
729 string const sep = string(1, os::path_separator(os::TEXENGINE));
730 string const texinputs = getEnv("TEXINPUTS");
732 if (os::shell() == os::UNIX)
733 return "env TEXINPUTS=\"." + sep + texinputs_prefix
734 + sep + texinputs + "\" ";
736 // NOTE: the dummy blank dir is necessary to force the
737 // QProcess parser to quote the argument (see bug 9453)
738 return "cmd /d /c set \"TEXINPUTS=." + sep + " "
739 + sep + texinputs_prefix
740 + sep + texinputs + "\" & ";
744 // Replace current directory in all elements of a path list with a given path.
745 string const replaceCurdirPath(string const & path, string const & pathlist)
747 string const oldpathlist = replaceEnvironmentPath(pathlist);
748 char const sep = os::path_separator();
751 for (size_t i = 0, k = 0; i != string::npos; k = i) {
752 i = oldpathlist.find(sep, i);
753 string p = oldpathlist.substr(k, i - k);
754 if (FileName::isAbsolute(p)) {
760 } else if (prefixIs(p, "./")) {
762 while (p[offset] == '/')
765 newpathlist += addPath(path, p.substr(offset));
766 if (suffixIs(p, "//"))
769 if (i != string::npos) {
771 // Stop here if the last element is empty
772 if (++i == oldpathlist.length())
780 // Make relative path out of two absolute paths
781 docstring const makeRelPath(docstring const & abspath, docstring const & basepath)
782 // Makes relative path out of absolute path. If it is deeper than basepath,
783 // it's easy. If basepath and abspath share something (they are all deeper
784 // than some directory), it'll be rendered using ..'s. If they are completely
785 // different, then the absolute path will be used as relative path.
787 docstring::size_type const abslen = abspath.length();
788 docstring::size_type const baselen = basepath.length();
790 docstring::size_type i = os::common_path(abspath, basepath);
793 // actually no match - cannot make it relative
797 // Count how many dirs there are in basepath above match
798 // and append as many '..''s into relpath
800 docstring::size_type j = i;
801 while (j < baselen) {
802 if (basepath[j] == '/') {
803 if (j + 1 == baselen)
810 // Append relative stuff from common directory to abspath
811 if (abspath[i] == '/')
813 for (; i < abslen; ++i)
816 if (suffixIs(buf, '/'))
817 buf.erase(buf.length() - 1);
818 // Substitute empty with .
825 // Append sub-directory(ies) to a path in an intelligent way
826 string const addPath(string const & path, string const & path_2)
829 string const path2 = os::internal_path(path_2);
831 if (!path.empty() && path != "." && path != "./") {
832 buf = os::internal_path(path);
833 if (path[path.length() - 1] != '/')
837 if (!path2.empty()) {
838 string::size_type const p2start = path2.find_first_not_of('/');
839 string::size_type const p2end = path2.find_last_not_of('/');
840 string const tmp = path2.substr(p2start, p2end - p2start + 1);
847 string const changeExtension(string const & oldname, string const & extension)
849 string::size_type const last_slash = oldname.rfind('/');
850 string::size_type last_dot = oldname.rfind('.');
851 if (last_dot < last_slash && last_slash != string::npos)
852 last_dot = string::npos;
855 // Make sure the extension starts with a dot
856 if (!extension.empty() && extension[0] != '.')
857 ext= '.' + extension;
861 return os::internal_path(oldname.substr(0, last_dot) + ext);
865 string const removeExtension(string const & name)
867 return changeExtension(name, string());
871 string const addExtension(string const & name, string const & extension)
873 if (!extension.empty() && extension[0] != '.')
874 return name + '.' + extension;
875 return name + extension;
879 /// Return the extension of the file (not including the .)
880 string const getExtension(string const & name)
882 string::size_type const last_slash = name.rfind('/');
883 string::size_type const last_dot = name.rfind('.');
884 if (last_dot != string::npos &&
885 (last_slash == string::npos || last_dot > last_slash))
886 return name.substr(last_dot + 1,
887 name.length() - (last_dot + 1));
893 string const unzippedFileName(string const & zipped_file)
895 string const ext = getExtension(zipped_file);
896 if (ext == "gz" || ext == "z" || ext == "Z")
897 return changeExtension(zipped_file, string());
898 else if (ext == "svgz")
899 return changeExtension(zipped_file, "svg");
900 return onlyPath(zipped_file) + "unzipped_" + onlyFileName(zipped_file);
904 FileName const unzipFile(FileName const & zipped_file, string const & unzipped_file)
906 FileName const tempfile = FileName(unzipped_file.empty() ?
907 unzippedFileName(zipped_file.toFilesystemEncoding()) :
910 string const command = "gunzip -c " +
911 zipped_file.toFilesystemEncoding() + " > " +
912 tempfile.toFilesystemEncoding();
914 one.startscript(Systemcall::Wait, command);
915 // test that command was executed successfully (anon)
916 // yes, please do. (Lgb)
921 docstring const makeDisplayPath(string const & path, unsigned int threshold)
925 // If file is from LyXDir, display it as if it were relative.
926 string const system = package().system_support().absFileName();
927 if (prefixIs(str, system) && str != system)
928 return from_utf8("[" + str.erase(0, system.length()) + "]");
930 // replace /home/blah with ~/
931 string const home = Package::get_home_dir().absFileName();
932 if (!home.empty() && prefixIs(str, home))
933 str = subst(str, home, "~");
935 if (str.length() <= threshold)
936 return from_utf8(os::external_path(str));
938 string const prefix = ".../";
939 docstring dstr = from_utf8(str);
942 while (dstr.length() > threshold)
943 dstr = split(dstr, temp, '/');
945 // Did we shorten everything away?
947 // Yes, filename itself is too long.
948 // Pick the start and the end of the filename.
949 dstr = from_utf8(onlyFileName(path));
950 docstring const head = dstr.substr(0, threshold / 2 - 3);
952 docstring::size_type len = dstr.length();
953 docstring const tail =
954 dstr.substr(len - threshold / 2 - 2, len - 1);
955 dstr = head + from_ascii("...") + tail;
958 return from_utf8(os::external_path(prefix + to_utf8(dstr)));
963 bool readLink(FileName const & file, FileName & link)
965 string const encoded = file.toFilesystemEncoding();
966 #ifdef HAVE_DEF_PATH_MAX
967 char linkbuffer[PATH_MAX + 1];
968 ssize_t const nRead = ::readlink(encoded.c_str(),
969 linkbuffer, sizeof(linkbuffer) - 1);
972 linkbuffer[nRead] = '\0'; // terminator
974 vector<char> buf(1024);
978 nRead = ::readlink(encoded.c_str(), &buf[0], buf.size() - 1);
982 if (static_cast<size_t>(nRead) < buf.size() - 1) {
985 buf.resize(buf.size() * 2);
987 buf[nRead] = '\0'; // terminator
988 const char * linkbuffer = &buf[0];
990 link = makeAbsPath(linkbuffer, onlyPath(file.absFileName()));
994 bool readLink(FileName const &, FileName &)
1001 cmd_ret const runCommand(string const & cmd)
1003 // FIXME: replace all calls to RunCommand with ForkedCall
1004 // (if the output is not needed) or the code in ISpell.cpp
1005 // (if the output is needed).
1007 // One question is if we should use popen or
1008 // create our own popen based on fork, exec, pipe
1009 // of course the best would be to have a
1010 // pstream (process stream), with the
1011 // variants ipstream, opstream
1013 #if defined (_WIN32)
1015 STARTUPINFO startup;
1016 PROCESS_INFORMATION process;
1017 SECURITY_ATTRIBUTES security;
1020 bool err2out = false;
1022 string const infile = trim(split(cmd, command, '<'), " \"");
1023 command = rtrim(command);
1024 if (suffixIs(command, "2>&1")) {
1025 command = rtrim(command, "2>&1");
1028 string const cmdarg = "/d /c " + command;
1029 string const comspec = getEnv("COMSPEC");
1031 security.nLength = sizeof(SECURITY_ATTRIBUTES);
1032 security.bInheritHandle = TRUE;
1033 security.lpSecurityDescriptor = NULL;
1035 if (CreatePipe(&in, &out, &security, 0)) {
1036 memset(&startup, 0, sizeof(STARTUPINFO));
1037 memset(&process, 0, sizeof(PROCESS_INFORMATION));
1039 startup.cb = sizeof(STARTUPINFO);
1040 startup.dwFlags = STARTF_USESTDHANDLES;
1042 startup.hStdError = err2out ? out : GetStdHandle(STD_ERROR_HANDLE);
1043 startup.hStdInput = infile.empty()
1044 ? GetStdHandle(STD_INPUT_HANDLE)
1045 : CreateFile(infile.c_str(), GENERIC_READ,
1046 FILE_SHARE_READ, &security, OPEN_EXISTING,
1047 FILE_ATTRIBUTE_NORMAL, NULL);
1048 startup.hStdOutput = out;
1050 if (startup.hStdInput != INVALID_HANDLE_VALUE &&
1051 CreateProcess(comspec.c_str(), (LPTSTR)cmdarg.c_str(),
1052 &security, &security, TRUE, CREATE_NO_WINDOW,
1053 0, 0, &startup, &process)) {
1055 CloseHandle(process.hThread);
1056 fno = _open_osfhandle((long)in, _O_RDONLY);
1058 inf = _fdopen(fno, "r");
1061 #elif defined (HAVE_POPEN)
1062 FILE * inf = ::popen(cmd.c_str(), os::popen_read_mode());
1063 #elif defined (HAVE__POPEN)
1064 FILE * inf = ::_popen(cmd.c_str(), os::popen_read_mode());
1066 #error No popen() function.
1069 // (Claus Hentschel) Check if popen was successful ;-)
1071 lyxerr << "RunCommand:: could not start child process" << endl;
1072 return make_pair(-1, string());
1078 ret += static_cast<char>(c);
1082 #if defined (_WIN32)
1083 WaitForSingleObject(process.hProcess, INFINITE);
1084 if (!infile.empty())
1085 CloseHandle(startup.hStdInput);
1086 CloseHandle(process.hProcess);
1087 int const pret = fclose(inf);
1088 #elif defined (HAVE_PCLOSE)
1089 int const pret = pclose(inf);
1090 #elif defined (HAVE__PCLOSE)
1091 int const pret = _pclose(inf);
1093 #error No pclose() function.
1097 perror("RunCommand:: could not terminate child process");
1099 return make_pair(pret, ret);
1103 FileName const findtexfile(string const & fil, string const & /*format*/)
1105 /* There is no problem to extend this function too use other
1106 methods to look for files. It could be setup to look
1107 in environment paths and also if wanted as a last resort
1108 to a recursive find. One of the easier extensions would
1109 perhaps be to use the LyX file lookup methods. But! I am
1110 going to implement this until I see some demand for it.
1114 // If the file can be found directly, we just return a
1115 // absolute path version of it.
1116 FileName const absfile(makeAbsPath(fil));
1117 if (absfile.exists())
1120 // Now we try to find it using kpsewhich.
1121 // It seems from the kpsewhich manual page that it is safe to use
1122 // kpsewhich without --format: "When the --format option is not
1123 // given, the search path used when looking for a file is inferred
1124 // from the name given, by looking for a known extension. If no
1125 // known extension is found, the search path for TeX source files
1127 // However, we want to take advantage of the format sine almost all
1128 // the different formats has environment variables that can be used
1129 // to controll which paths to search. f.ex. bib looks in
1130 // BIBINPUTS and TEXBIB. Small list follows:
1131 // bib - BIBINPUTS, TEXBIB
1133 // graphic/figure - TEXPICTS, TEXINPUTS
1134 // ist - TEXINDEXSTYLE, INDEXSTYLE
1135 // pk - PROGRAMFONTS, PKFONTS, TEXPKS, GLYPHFONTS, TEXFONTS
1137 // tfm - TFMFONTS, TEXFONTS
1138 // This means that to use kpsewhich in the best possible way we
1139 // should help it by setting additional path in the approp. envir.var.
1140 string const kpsecmd = "kpsewhich " + fil;
1142 cmd_ret const c = runCommand(kpsecmd);
1144 LYXERR(Debug::LATEX, "kpse status = " << c.first << '\n'
1145 << "kpse result = `" << rtrim(c.second, "\n\r") << '\'');
1147 return FileName(rtrim(to_utf8(from_filesystem8bit(c.second)), "\n\r"));
1153 int compare_timestamps(FileName const & file1, FileName const & file2)
1155 // If the original is newer than the copy, then copy the original
1156 // to the new directory.
1159 if (file1.exists() && file2.exists()) {
1160 double const tmp = difftime(file1.lastModified(), file2.lastModified());
1162 cmp = tmp > 0 ? 1 : -1;
1164 } else if (file1.exists()) {
1166 } else if (file2.exists()) {
1174 bool prefs2prefs(FileName const & filename, FileName const & tempfile, bool lfuns)
1176 FileName const script = libFileSearch("scripts", "prefs2prefs.py");
1177 if (script.empty()) {
1178 LYXERR0("Could not find bind file conversion "
1179 "script prefs2prefs.py.");
1183 ostringstream command;
1184 command << os::python() << ' ' << quoteName(script.toFilesystemEncoding())
1185 << ' ' << (lfuns ? "-l" : "-p") << ' '
1186 << quoteName(filename.toFilesystemEncoding())
1187 << ' ' << quoteName(tempfile.toFilesystemEncoding());
1188 string const command_str = command.str();
1190 LYXERR(Debug::FILES, "Running `" << command_str << '\'');
1192 cmd_ret const ret = runCommand(command_str);
1193 if (ret.first != 0) {
1194 LYXERR0("Could not run file conversion script prefs2prefs.py.");
1201 bool configFileNeedsUpdate(string const & file)
1203 // We cannot initialize configure_script directly because the package
1204 // is not initialized yet when static objects are constructed.
1205 static FileName configure_script;
1206 static bool firstrun = true;
1209 FileName(addName(package().system_support().absFileName(),
1215 FileName(addName(package().user_support().absFileName(), file));
1216 return !absfile.exists()
1217 || configure_script.lastModified() > absfile.lastModified();
1221 int fileLock(const char * lock_file)
1224 #if defined(HAVE_LOCKF)
1225 fd = open(lock_file, O_CREAT|O_APPEND|O_SYNC|O_RDWR, 0666);
1226 if (lockf(fd, F_LOCK, 0) != 0) {
1234 void fileUnlock(int fd, const char * /* lock_file*/)
1236 #if defined(HAVE_LOCKF)
1238 if (lockf(fd, F_ULOCK, 0))
1239 LYXERR0("Can't unlock the file.");
1245 } //namespace support