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
14 * Full author contact details are available in file CREDITS
16 * General path-mangling functions
22 #pragma implementation "filetools.h"
26 #include "support/lstrings.h"
27 #include "support/systemcall.h"
29 #include "filetools.h"
31 #include "frontends/Alert.h"
33 #include "support/path.h" // I know it's OS/2 specific (SMiyata)
50 // Which part of this is still necessary? (JMarc).
53 # define NAMLEN(dirent) strlen((dirent)->d_name)
55 # define dirent direct
56 # define NAMLEN(dirent) (dirent)->d_namlen
58 # include <sys/ndir.h>
68 #ifndef CXX_GLOBAL_CSTD
81 extern string system_lyxdir;
82 extern string build_lyxdir;
83 extern string user_lyxdir;
86 bool IsLyXFilename(string const & filename)
88 return suffixIs(ascii_lowercase(filename), ".lyx");
92 bool IsSGMLFilename(string const & filename)
94 return suffixIs(ascii_lowercase(filename), ".sgml");
98 // Substitutes spaces with underscores in filename (and path)
99 string const MakeLatexName(string const & file)
101 string name = OnlyFilename(file);
102 string const path = OnlyPath(file);
104 for (string::size_type i = 0; i < name.length(); ++i) {
105 name[i] &= 0x7f; // set 8th bit to 0
108 // ok so we scan through the string twice, but who cares.
109 string const keep("abcdefghijklmnopqrstuvwxyz"
110 "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
111 "@!\"'()*+,-./0123456789:;<=>?[]`|");
113 string::size_type pos = 0;
114 while ((pos = name.find_first_not_of(keep, pos)) != string::npos) {
117 return AddName(path, name);
121 // Substitutes spaces with underscores in filename (and path)
122 string const QuoteName(string const & name)
124 return (os::shell() == os::UNIX) ?
130 // Is a file readable ?
131 bool IsFileReadable(string const & path)
134 return file.isOK() && file.isRegular() && file.readable();
138 // Is a file read_only?
139 // return 1 read-write
141 // -1 error (doesn't exist, no access, anything else)
142 int IsFileWriteable(string const & path)
146 if (fi.access(FileInfo::wperm|FileInfo::rperm)) // read-write
148 if (fi.readable()) // read-only
150 return -1; // everything else.
154 //returns true: dir writeable
155 // false: not writeable
156 bool IsDirWriteable(string const & path)
158 lyxerr[Debug::FILES] << "IsDirWriteable: " << path << endl;
160 string const tmpfl(lyx::tempName(path, "lyxwritetest"));
170 // Uses a string of paths separated by ";"s to find a file to open.
171 // Can't cope with pathnames with a ';' in them. Returns full path to file.
172 // If path entry begins with $$LyX/, use system_lyxdir
173 // If path entry begins with $$User/, use user_lyxdir
174 // Example: "$$User/doc;$$LyX/doc"
175 string const FileOpenSearch(string const & path, string const & name,
180 bool notfound = true;
181 string tmppath = split(path, path_element, ';');
183 while (notfound && !path_element.empty()) {
184 path_element = os::slashify_path(path_element);
185 if (!suffixIs(path_element, '/'))
187 path_element = subst(path_element, "$$LyX", system_lyxdir);
188 path_element = subst(path_element, "$$User", user_lyxdir);
190 real_file = FileSearch(path_element, name, ext);
192 if (real_file.empty()) {
194 tmppath = split(tmppath, path_element, ';');
195 } while (!tmppath.empty() && path_element.empty());
201 if (ext.empty() && notfound) {
202 real_file = FileOpenSearch(path, name, "exe");
203 if (notfound) real_file = FileOpenSearch(path, name, "cmd");
210 /// Returns a vector of all files in directory dir having extension ext.
211 vector<string> const DirList(string const & dir, string const & ext)
213 // This is a non-error checking C/system implementation
215 if (!ext.empty() && ext[0] != '.')
219 vector<string> dirlist;
220 DIR * dirp = ::opendir(dir.c_str());
223 << "Directory \"" << dir
224 << "\" does not exist to DirList." << endl;
229 while ((dire = ::readdir(dirp))) {
230 string const fil = dire->d_name;
231 if (suffixIs(fil, extension)) {
232 dirlist.push_back(fil);
237 /* I would have prefered to take a vector<string>& as parameter so
238 that we could avoid the copy of the vector when returning.
240 dirlist.swap(argvec);
241 to avoid the copy. (Lgb)
243 /* A C++ implementaion will look like this:
244 string extension(ext);
245 if (extension[0] != '.') extension.insert(0, 1, '.');
246 vector<string> dirlist;
247 directory_iterator dit("dir");
248 while (dit != directory_iterator()) {
249 string fil = dit->filename;
250 if (prefixIs(fil, extension)) {
251 dirlist.push_back(fil);
255 dirlist.swap(argvec);
261 // Returns the real name of file name in directory path, with optional
263 string const FileSearch(string const & path, string const & name,
266 // if `name' is an absolute path, we ignore the setting of `path'
267 // Expand Environmentvariables in 'name'
268 string const tmpname = ReplaceEnvironmentPath(name);
269 string fullname = MakeAbsPath(tmpname, path);
270 // search first without extension, then with it.
271 if (IsFileReadable(fullname))
273 else if (ext.empty())
275 else { // Is it not more reasonable to use ChangeExtension()? (SMiyata)
278 if (IsFileReadable(fullname))
286 // Search the file name.ext in the subdirectory dir of
288 // 2) build_lyxdir (if not empty)
290 string const LibFileSearch(string const & dir, string const & name,
293 string fullname = FileSearch(AddPath(user_lyxdir, dir), name, ext);
294 if (!fullname.empty())
297 if (!build_lyxdir.empty())
298 fullname = FileSearch(AddPath(build_lyxdir, dir), name, ext);
299 if (!fullname.empty())
302 return FileSearch(AddPath(system_lyxdir, dir), name, ext);
307 i18nLibFileSearch(string const & dir, string const & name,
310 // this comment is from intl/dcigettext.c. We try to mimick this
312 /* The highest priority value is the `LANGUAGE' environment
313 variable. But we don't use the value if the currently
314 selected locale is the C locale. This is a GNU extension. */
316 string const lc_all = GetEnv("LC_ALL");
317 string lang = GetEnv("LANGUAGE");
318 if (lang.empty() || lc_all == "C") {
321 lang = GetEnv("LANG");
325 lang = token(lang, '_', 0);
327 if (lang.empty() || lang == "C")
328 return LibFileSearch(dir, name, ext);
330 string const tmp = LibFileSearch(dir, lang + '_' + name,
335 return LibFileSearch(dir, name, ext);
340 string const LibScriptSearch(string const & command)
343 string args = command;
344 args = split(args, script, ' ');
345 script = LibFileSearch("scripts", script);
348 else if (args.empty())
351 return script + ' ' + args;
355 string const GetEnv(string const & envname)
357 // f.ex. what about error checking?
358 char const * const ch = getenv(envname.c_str());
359 string const envstr = !ch ? "" : ch;
364 string const GetEnvPath(string const & name)
367 string const pathlist = subst(GetEnv(name), ':', ';');
369 string const pathlist = os::slashify_path(GetEnv(name));
371 return rtrim(pathlist, ";");
375 bool PutEnv(string const & envstr)
377 // CHECK Look at and fix this.
378 // f.ex. what about error checking?
381 // this leaks, but what can we do about it?
382 // Is doing a getenv() and a free() of the older value
383 // a good idea? (JMarc)
384 // Actually we don't have to leak...calling putenv like this
385 // should be enough: ... and this is obviously not enough if putenv
386 // does not make a copy of the string. It is also not very wise to
387 // put a string on the free store. If we have to leak we should do it
389 char * leaker = new char[envstr.length() + 1];
390 envstr.copy(leaker, envstr.length());
391 leaker[envstr.length()] = '\0';
392 int const retval = lyx::putenv(leaker);
394 // If putenv does not make a copy of the char const * this
395 // is very dangerous. OTOH if it does take a copy this is the
397 // The only implementation of putenv that I have seen does not
398 // allocate memory. _And_ after testing the putenv in glibc it
399 // seems that we need to make a copy of the string contents.
400 // I will enable the above.
401 //int retval = lyx::putenv(envstr.c_str());
405 string const str = envstr.split(varname,'=');
406 int const retval = ::setenv(varname.c_str(), str.c_str(), true);
408 // No environment setting function. Can this happen?
409 int const retval = 1; //return an error condition.
416 bool PutEnvPath(string const & envstr)
418 return PutEnv(envstr);
424 int DeleteAllFilesInDir(string const & path)
426 // I have decided that we will be using parts from the boost
427 // library. Check out http://www.boost.org/
428 // For directory access we will then use the directory_iterator.
429 // Then the code will be something like:
430 // directory_iterator dit(path);
431 // directory_iterator dend;
432 // if (dit == dend) {
433 // Alert::err_alert(_("Error! Cannot open directory:"), path);
436 // for (; dit != dend; ++dit) {
437 // string filename(*dit);
438 // if (filename == "." || filename == "..")
440 // string unlinkpath(AddName(path, filename));
441 // if (lyx::unlink(unlinkpath))
442 // Alert::err_alert(_("Error! Could not remove file:"),
446 DIR * dir = ::opendir(path.c_str());
448 Alert::err_alert (_("Error! Cannot open directory:"), path);
452 int return_value = 0;
453 while ((de = readdir(dir))) {
454 string const temp = de->d_name;
455 if (temp == "." || temp == "..")
457 string const unlinkpath = AddName (path, temp);
459 lyxerr[Debug::FILES] << "Deleting file: " << unlinkpath
463 FileInfo fi(unlinkpath);
464 if (fi.isOK() && fi.isDir())
465 deleted = (DeleteAllFilesInDir(unlinkpath) == 0);
466 deleted &= (lyx::unlink(unlinkpath) == 0);
468 Alert::err_alert(_("Error! Could not remove file:"),
478 string const CreateTmpDir(string const & tempdir, string const & mask)
481 << "CreateTmpDir: tempdir=`" << tempdir << "'\n"
482 << "CreateTmpDir: mask=`" << mask << '\'' << endl;
484 string const tmpfl(lyx::tempName(tempdir, mask));
485 // lyx::tempName actually creates a file to make sure that it
486 // stays unique. So we have to delete it before we can create
487 // a dir with the same name. Note also that we are not thread
488 // safe because of the gap between unlink and mkdir. (Lgb)
489 lyx::unlink(tmpfl.c_str());
491 if (tmpfl.empty() || lyx::mkdir(tmpfl, 0700)) {
492 Alert::err_alert(_("Error! Couldn't create temporary directory:"),
496 return MakeAbsPath(tmpfl);
500 int DestroyTmpDir(string const & tmpdir, bool Allfiles)
505 if (Allfiles && DeleteAllFilesInDir(tmpdir)) {
508 if (lyx::rmdir(tmpdir)) {
509 Alert::err_alert(_("Error! Couldn't delete temporary directory:"),
519 string const CreateBufferTmpDir(string const & pathfor)
522 static string const tmpdir(pathfor.empty() ? os::getTmpDir() : pathfor);
523 // We are in our own directory. Why bother to mangle name?
524 // In fact I wrote this code to circumvent a problematic behaviour (bug?)
526 string const tmpfl = tmpdir + "/lyx_tmpbuf" + tostr(count++);
527 if (lyx::mkdir(tmpfl, 0777)) {
528 Alert::err_alert(_("Error! Couldn't create temporary directory:"),
536 int DestroyBufferTmpDir(string const & tmpdir)
538 return DestroyTmpDir(tmpdir, true);
542 string const CreateLyXTmpDir(string const & deflt)
544 if ((!deflt.empty()) && (deflt != "/tmp")) {
545 if (lyx::mkdir(deflt, 0777)) {
549 return CreateTmpDir(deflt, "lyx_tmpdir");
556 return CreateTmpDir("/tmp", "lyx_tmpdir");
561 // FIXME: no need for separate method like this ...
562 int DestroyLyXTmpDir(string const & tmpdir)
564 return DestroyTmpDir(tmpdir, true);
568 // Creates directory. Returns true if succesfull
569 bool createDirectory(string const & path, int permission)
571 string temp(rtrim(os::slashify_path(path), "/"));
574 Alert::alert(_("Internal error!"),
575 _("Call to createDirectory with invalid name"));
579 if (lyx::mkdir(temp, permission)) {
580 Alert::err_alert (_("Error! Couldn't create directory:"), temp);
587 // Strip filename from path name
588 string const OnlyPath(string const & Filename)
590 // If empty filename, return empty
591 if (Filename.empty()) return Filename;
593 // Find last / or start of filename
594 string::size_type j = Filename.rfind('/');
595 if (j == string::npos)
597 return Filename.substr(0, j + 1);
601 // Convert relative path into absolute path based on a basepath.
602 // If relpath is absolute, just use that.
603 // If basepath is empty, use CWD as base.
604 string const MakeAbsPath(string const & RelPath, string const & BasePath)
606 // checks for already absolute path
607 if (os::is_absolute_path(RelPath))
610 // Copies given paths
611 string TempRel(os::slashify_path(RelPath));
612 // Since TempRel is NOT absolute, we can safely replace "//" with "/"
613 TempRel = subst(TempRel, "//", "/");
617 if (os::is_absolute_path(BasePath))
620 TempBase = AddPath(lyx::getcwd(), BasePath);
622 // Handle /./ at the end of the path
623 while (suffixIs(TempBase, "/./"))
624 TempBase.erase(TempBase.length() - 2);
626 // processes relative path
627 string RTemp(TempRel);
630 while (!RTemp.empty()) {
632 RTemp = split(RTemp, Temp, '/');
634 if (Temp == ".") continue;
636 // Remove one level of TempBase
637 string::difference_type i = TempBase.length() - 2;
640 while (i > 0 && TempBase[i] != '/') --i;
644 while (i > 2 && TempBase[i] != '/') --i;
647 TempBase.erase(i, string::npos);
650 } else if (Temp.empty() && !RTemp.empty()) {
651 TempBase = os::current_root() + RTemp;
654 // Add this piece to TempBase
655 if (!suffixIs(TempBase, '/'))
661 // returns absolute path
662 return os::slashify_path(TempBase);
666 // Correctly append filename to the pathname.
667 // If pathname is '.', then don't use pathname.
668 // Chops any path of filename.
669 string const AddName(string const & path, string const & fname)
672 string const basename(OnlyFilename(fname));
676 if (path != "." && path != "./" && !path.empty()) {
677 buf = os::slashify_path(path);
678 if (!suffixIs(path, '/'))
682 return buf + basename;
686 // Strips path from filename
687 string const OnlyFilename(string const & fname)
692 string::size_type j = fname.rfind('/');
693 if (j == string::npos) // no '/' in fname
697 return fname.substr(j + 1);
701 /// Returns true is path is absolute
702 bool AbsolutePath(string const & path)
704 return os::is_absolute_path(path);
709 // Create absolute path. If impossible, don't do anything
710 // Supports ./ and ~/. Later we can add support for ~logname/. (Asger)
711 string const ExpandPath(string const & path)
713 // checks for already absolute path
714 string RTemp(ReplaceEnvironmentPath(path));
715 if (os::is_absolute_path(RTemp))
719 string const copy(RTemp);
722 RTemp = split(RTemp, Temp, '/');
725 return lyx::getcwd() /*GetCWD()*/ + '/' + RTemp;
728 return GetEnvPath("HOME") + '/' + RTemp;
731 return MakeAbsPath(copy);
733 // Don't know how to handle this
739 // Constracts path/../path
740 // Can't handle "../../" or "/../" (Asger)
741 string const NormalizePath(string const & path)
747 if (os::is_absolute_path(path))
750 // Make implicit current directory explicit
753 while (!RTemp.empty()) {
755 RTemp = split(RTemp, Temp, '/');
759 } else if (Temp == "..") {
760 // Remove one level of TempBase
761 string::difference_type i = TempBase.length() - 2;
762 while (i > 0 && TempBase[i] != '/')
764 if (i >= 0 && TempBase[i] == '/')
765 TempBase.erase(i + 1, string::npos);
769 TempBase += Temp + '/';
773 // returns absolute path
778 string const GetFileContents(string const & fname)
780 FileInfo finfo(fname);
782 ifstream ifs(fname.c_str());
787 return STRCONV(ofs.str());
790 lyxerr << "LyX was not able to read file '" << fname << '\'' << endl;
796 // Search ${...} as Variable-Name inside the string and replace it with
797 // the denoted environmentvariable
798 // Allow Variables according to
799 // variable := '$' '{' [A-Za-z_]{[A-Za-z_0-9]*} '}'
802 string const ReplaceEnvironmentPath(string const & path)
805 // CompareChar: Environment variables starts with this character
806 // PathChar: Next path component start with this character
807 // while CompareChar found do:
808 // Split String with PathChar
809 // Search Environmentvariable
810 // if found: Replace Strings
812 char const CompareChar = '$';
813 char const FirstChar = '{';
814 char const EndChar = '}';
815 char const UnderscoreChar = '_';
816 string EndString; EndString += EndChar;
817 string FirstString; FirstString += FirstChar;
818 string CompareString; CompareString += CompareChar;
819 string const RegExp("*}*"); // Exist EndChar inside a String?
821 // first: Search for a '$' - Sign.
823 string result1; //(copy); // for split-calls
824 string result0 = split(path, result1, CompareChar);
825 while (!result0.empty()) {
826 string copy1(result0); // contains String after $
828 // Check, if there is an EndChar inside original String.
830 if (!regexMatch(copy1, RegExp)) {
831 // No EndChar inside. So we are finished
832 result1 += CompareString + result0;
838 string res0 = split(copy1, res1, EndChar);
839 // Now res1 holds the environmentvariable
840 // First, check, if Contents is ok.
841 if (res1.empty()) { // No environmentvariable. Continue Loop.
842 result1 += CompareString + FirstString;
846 // check contents of res1
847 char const * res1_contents = res1.c_str();
848 if (*res1_contents != FirstChar) {
849 // Again No Environmentvariable
850 result1 += CompareString;
854 // Check for variable names
855 // Situation ${} is detected as "No Environmentvariable"
856 char const * cp1 = res1_contents + 1;
857 bool result = isalpha(*cp1) || (*cp1 == UnderscoreChar);
859 while (*cp1 && result) {
860 result = isalnum(*cp1) ||
861 (*cp1 == UnderscoreChar);
866 // no correct variable name
867 result1 += CompareString + res1 + EndString;
868 result0 = split(res0, res1, CompareChar);
873 string env(GetEnv(res1_contents + 1));
875 // Congratulations. Environmentvariable found
878 result1 += CompareString + res1 + EndString;
881 result0 = split(res0, res1, CompareChar);
888 // Make relative path out of two absolute paths
889 string const MakeRelPath(string const & abspath, string const & basepath)
890 // Makes relative path out of absolute path. If it is deeper than basepath,
891 // it's easy. If basepath and abspath share something (they are all deeper
892 // than some directory), it'll be rendered using ..'s. If they are completely
893 // different, then the absolute path will be used as relative path.
895 string::size_type const abslen = abspath.length();
896 string::size_type const baselen = basepath.length();
898 string::size_type i = os::common_path(abspath, basepath);
901 // actually no match - cannot make it relative
905 // Count how many dirs there are in basepath above match
906 // and append as many '..''s into relpath
908 string::size_type j = i;
909 while (j < baselen) {
910 if (basepath[j] == '/') {
911 if (j + 1 == baselen)
918 // Append relative stuff from common directory to abspath
919 if (abspath[i] == '/')
921 for (; i < abslen; ++i)
924 if (suffixIs(buf, '/'))
925 buf.erase(buf.length() - 1);
926 // Substitute empty with .
933 // Append sub-directory(ies) to a path in an intelligent way
934 string const AddPath(string const & path, string const & path_2)
937 string const path2 = os::slashify_path(path_2);
939 if (!path.empty() && path != "." && path != "./") {
940 buf = os::slashify_path(path);
941 if (path[path.length() - 1] != '/')
945 if (!path2.empty()) {
946 string::size_type const p2start = path2.find_first_not_of('/');
947 string::size_type const p2end = path2.find_last_not_of('/');
948 string const tmp = path2.substr(p2start, p2end - p2start + 1);
956 Change extension of oldname to extension.
957 Strips path off if no_path == true.
958 If no extension on oldname, just appends.
960 string const ChangeExtension(string const & oldname, string const & extension)
962 string::size_type const last_slash = oldname.rfind('/');
963 string::size_type last_dot = oldname.rfind('.');
964 if (last_dot < last_slash && last_slash != string::npos)
965 last_dot = string::npos;
968 // Make sure the extension starts with a dot
969 if (!extension.empty() && extension[0] != '.')
970 ext= '.' + extension;
974 return os::slashify_path(oldname.substr(0, last_dot) + ext);
978 /// Return the extension of the file (not including the .)
979 string const GetExtension(string const & name)
981 string::size_type const last_slash = name.rfind('/');
982 string::size_type const last_dot = name.rfind('.');
983 if (last_dot != string::npos &&
984 (last_slash == string::npos || last_dot > last_slash))
985 return name.substr(last_dot + 1,
986 name.length() - (last_dot + 1));
991 // the different filetypes and what they contain in one of the first lines
992 // (dots are any characters). (Herbert 20020131)
995 // EPS %!PS-Adobe-3.0 EPSF...
1002 // PBM P1... or P4 (B/W)
1003 // PGM P2... or P5 (Grayscale)
1004 // PPM P3... or P6 (color)
1005 // PS %!PS-Adobe-2.0 or 1.0, no "EPSF"!
1006 // SGI \001\332... (decimal 474)
1008 // TIFF II... or MM...
1009 // XBM ..._bits[]...
1010 // XPM /* XPM */ sometimes missing (f.ex. tgif-export)
1011 // ...static char *...
1012 // XWD \000\000\000\151 (0x00006900) decimal 105
1014 // GZIP \037\213\010\010... http://www.ietf.org/rfc/rfc1952.txt
1015 // ZIP PK... http://www.halyava.ru/document/ind_arch.htm
1016 // Z \037\177 UNIX compress
1018 /// return the "extension" which belongs to the contents.
1019 /// for no knowing contents return the extension. Without
1020 /// an extension and unknown contents we return "user"
1021 string const getExtFromContents(string const & filename)
1024 if (filename.empty() || !IsFileReadable(filename))
1028 ifstream ifs(filename.c_str());
1030 // Couldn't open file...
1034 string const gzipStamp = "\037\213\010\010";
1037 string const zipStamp = "PK";
1040 string const compressStamp = "\037\177";
1042 // Maximum strings to read
1043 int const max_count = 50;
1047 bool firstLine = true;
1048 while ((count++ < max_count) && format.empty()) {
1050 lyxerr[Debug::GRAPHICS]
1051 << "filetools(getExtFromContents)\n"
1052 << "\tFile type not recognised before EOF!"
1058 string const stamp = str.substr(0,2);
1059 if (firstLine && str.size() >= 2) {
1060 // at first we check for a zipped file, because this
1061 // information is saved in the first bytes of the file!
1062 // also some graphic formats which save the information
1063 // in the first line, too.
1064 if (prefixIs(str, gzipStamp)) {
1067 } else if (stamp == zipStamp) {
1070 } else if (stamp == compressStamp) {
1071 format = "compress";
1073 // the graphics part
1074 } else if (stamp == "BM") {
1077 } else if (stamp == "\001\332") {
1081 // Don't need to use str.at(0), str.at(1) because
1082 // we already know that str.size() >= 2
1083 } else if (str[0] == 'P') {
1099 } else if ((stamp == "II") || (stamp == "MM")) {
1102 } else if (prefixIs(str,"%TGIF")) {
1105 } else if (prefixIs(str,"#FIG")) {
1108 } else if (prefixIs(str,"GIF")) {
1111 } else if (str.size() > 3) {
1112 int const c = ((str[0] << 24) & (str[1] << 16) &
1113 (str[2] << 8) & str[3]);
1122 if (!format.empty())
1124 else if (contains(str,"EPSF"))
1125 // dummy, if we have wrong file description like
1126 // %!PS-Adobe-2.0EPSF"
1129 else if (contains(str,"Grace"))
1132 else if (contains(str,"JFIF"))
1135 else if (contains(str,"%PDF"))
1138 else if (contains(str,"PNG"))
1141 else if (contains(str,"%!PS-Adobe")) {
1144 if (contains(str,"EPSF"))
1150 else if (contains(str,"_bits[]"))
1153 else if (contains(str,"XPM") || contains(str, "static char *"))
1156 else if (contains(str,"BITPIX"))
1160 if (!format.empty()) {
1161 lyxerr[Debug::GRAPHICS]
1162 << "Recognised Fileformat: " << format << endl;
1166 string const ext(GetExtension(filename));
1167 lyxerr[Debug::GRAPHICS]
1168 << "filetools(getExtFromContents)\n"
1169 << "\tCouldn't find a known Type!\n";
1171 lyxerr[Debug::GRAPHICS]
1172 << "\twill take the file extension -> "
1176 lyxerr[Debug::GRAPHICS]
1177 << "\twill use ext or a \"user\" defined format" << endl;
1183 /// check for zipped file
1184 bool zippedFile(string const & name)
1186 string const type = getExtFromContents(name);
1187 if (contains("gzip zip compress", type) && !type.empty())
1193 string const unzipFile(string const & zipped_file)
1195 string const file = ChangeExtension(zipped_file, string());
1196 string const tempfile = lyx::tempName(string(), file);
1198 string const command = "gunzip -c " + zipped_file + " > " + tempfile;
1200 one.startscript(Systemcall::Wait, command);
1201 // test that command was executed successfully (anon)
1202 // yes, please do. (Lgb)
1207 // Creates a nice compact path for displaying
1209 MakeDisplayPath (string const & path, unsigned int threshold)
1211 string::size_type const l1 = path.length();
1213 // First, we try a relative path compared to home
1214 string const home(GetEnvPath("HOME"));
1215 string relhome = MakeRelPath(path, home);
1217 string::size_type l2 = relhome.length();
1221 // If we backup from home or don't have a relative path,
1222 // this try is no good
1223 if (prefixIs(relhome, "../") || os::is_absolute_path(relhome)) {
1224 // relative path was no good, just use the original path
1231 // Is the path too long?
1232 if (l2 > threshold) {
1238 while (relhome.length() > threshold)
1239 relhome = split(relhome, temp, '/');
1241 // Did we shortend everything away?
1242 if (relhome.empty()) {
1243 // Yes, filename in itself is too long.
1244 // Pick the start and the end of the filename.
1245 relhome = OnlyFilename(path);
1246 string const head = relhome.substr(0, threshold/2 - 3);
1248 l2 = relhome.length();
1250 relhome.substr(l2 - threshold/2 - 2, l2 - 1);
1251 relhome = head + "..." + tail;
1254 return prefix + relhome;
1258 bool LyXReadLink(string const & file, string & link, bool resolve)
1260 char linkbuffer[512];
1261 // Should be PATH_MAX but that needs autconf support
1262 int const nRead = ::readlink(file.c_str(),
1263 linkbuffer, sizeof(linkbuffer) - 1);
1266 linkbuffer[nRead] = '\0'; // terminator
1268 link = MakeAbsPath(linkbuffer, OnlyPath(file));
1275 cmd_ret const RunCommand(string const & cmd)
1277 // One question is if we should use popen or
1278 // create our own popen based on fork, exec, pipe
1279 // of course the best would be to have a
1280 // pstream (process stream), with the
1281 // variants ipstream, opstream
1283 FILE * inf = ::popen(cmd.c_str(), os::popen_read_mode());
1285 // (Claus Hentschel) Check if popen was succesful ;-)
1287 return make_pair(-1, string());
1292 ret += static_cast<char>(c);
1295 int const pret = pclose(inf);
1296 return make_pair(pret, ret);
1300 string const findtexfile(string const & fil, string const & /*format*/)
1302 /* There is no problem to extend this function too use other
1303 methods to look for files. It could be setup to look
1304 in environment paths and also if wanted as a last resort
1305 to a recursive find. One of the easier extensions would
1306 perhaps be to use the LyX file lookup methods. But! I am
1307 going to implement this until I see some demand for it.
1311 // If the file can be found directly, we just return a
1312 // absolute path version of it.
1313 if (FileInfo(fil).exist())
1314 return MakeAbsPath(fil);
1316 // No we try to find it using kpsewhich.
1317 // It seems from the kpsewhich manual page that it is safe to use
1318 // kpsewhich without --format: "When the --format option is not
1319 // given, the search path used when looking for a file is inferred
1320 // from the name given, by looking for a known extension. If no
1321 // known extension is found, the search path for TeX source files
1323 // However, we want to take advantage of the format sine almost all
1324 // the different formats has environment variables that can be used
1325 // to controll which paths to search. f.ex. bib looks in
1326 // BIBINPUTS and TEXBIB. Small list follows:
1327 // bib - BIBINPUTS, TEXBIB
1329 // graphic/figure - TEXPICTS, TEXINPUTS
1330 // ist - TEXINDEXSTYLE, INDEXSTYLE
1331 // pk - PROGRAMFONTS, PKFONTS, TEXPKS, GLYPHFONTS, TEXFONTS
1333 // tfm - TFMFONTS, TEXFONTS
1334 // This means that to use kpsewhich in the best possible way we
1335 // should help it by setting additional path in the approp. envir.var.
1336 string const kpsecmd = "kpsewhich " + fil;
1338 cmd_ret const c = RunCommand(kpsecmd);
1340 lyxerr[Debug::LATEX] << "kpse status = " << c.first << '\n'
1341 << "kpse result = `" << rtrim(c.second, "\n")
1344 return os::internal_path(rtrim(c.second, "\n\r"));
1350 void removeAutosaveFile(string const & filename)
1352 string a = OnlyPath(filename);
1354 a += OnlyFilename(filename);
1356 FileInfo const fileinfo(a);
1357 if (fileinfo.exist()) {
1358 if (lyx::unlink(a) != 0) {
1359 Alert::err_alert(_("Could not delete auto-save file!"), a);
1365 void readBB_lyxerrMessage(string const & file, bool & zipped,
1366 string const & message)
1368 lyxerr[Debug::GRAPHICS] << "[readBB_from_PSFile] "
1369 << message << std::endl;
1375 string const readBB_from_PSFile(string const & file)
1377 // in a (e)ps-file it's an entry like %%BoundingBox:23 45 321 345
1378 // It seems that every command in the header has an own line,
1379 // getline() should work for all files.
1380 // On the other hand some plot programs write the bb at the
1381 // end of the file. Than we have in the header:
1382 // %%BoundingBox: (atend)
1383 // In this case we must check the end.
1384 bool zipped = zippedFile(file);
1385 string const file_ = zipped ?
1386 string(unzipFile(file)) : string(file);
1387 string const format = getExtFromContents(file_);
1389 if (format != "eps" && format != "ps") {
1390 readBB_lyxerrMessage(file_, zipped,"no(e)ps-format");
1394 std::ifstream is(file_.c_str());
1398 if (contains(s,"%%BoundingBox:") && !contains(s,"atend")) {
1399 string const bb = ltrim(s.substr(14));
1400 readBB_lyxerrMessage(file_, zipped, bb);
1404 readBB_lyxerrMessage(file_, zipped, "no bb found");