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 #include "support/lstrings.h"
23 #include "support/systemcall.h"
25 #include "filetools.h"
27 #include "frontends/Alert.h"
29 #include "support/path.h" // I know it's OS/2 specific (SMiyata)
46 // Which part of this is still necessary? (JMarc).
49 # define NAMLEN(dirent) strlen((dirent)->d_name)
51 # define dirent direct
52 # define NAMLEN(dirent) (dirent)->d_namlen
54 # include <sys/ndir.h>
64 #ifndef CXX_GLOBAL_CSTD
77 extern string system_lyxdir;
78 extern string build_lyxdir;
79 extern string user_lyxdir;
82 bool IsLyXFilename(string const & filename)
84 return suffixIs(ascii_lowercase(filename), ".lyx");
88 bool IsSGMLFilename(string const & filename)
90 return suffixIs(ascii_lowercase(filename), ".sgml");
94 // Substitutes spaces with underscores in filename (and path)
95 string const MakeLatexName(string const & file)
97 string name = OnlyFilename(file);
98 string const path = OnlyPath(file);
100 for (string::size_type i = 0; i < name.length(); ++i) {
101 name[i] &= 0x7f; // set 8th bit to 0
104 // ok so we scan through the string twice, but who cares.
105 string const keep("abcdefghijklmnopqrstuvwxyz"
106 "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
107 "@!\"'()*+,-./0123456789:;<=>?[]`|");
109 string::size_type pos = 0;
110 while ((pos = name.find_first_not_of(keep, pos)) != string::npos) {
113 return AddName(path, name);
117 // Substitutes spaces with underscores in filename (and path)
118 string const QuoteName(string const & name)
120 return (os::shell() == os::UNIX) ?
126 // Is a file readable ?
127 bool IsFileReadable(string const & path)
130 return file.isOK() && file.isRegular() && file.readable();
134 // Is a file read_only?
135 // return 1 read-write
137 // -1 error (doesn't exist, no access, anything else)
138 int IsFileWriteable(string const & path)
142 if (fi.access(FileInfo::wperm|FileInfo::rperm)) // read-write
144 if (fi.readable()) // read-only
146 return -1; // everything else.
150 //returns true: dir writeable
151 // false: not writeable
152 bool IsDirWriteable(string const & path)
154 lyxerr[Debug::FILES] << "IsDirWriteable: " << path << endl;
156 string const tmpfl(lyx::tempName(path, "lyxwritetest"));
166 // Uses a string of paths separated by ";"s to find a file to open.
167 // Can't cope with pathnames with a ';' in them. Returns full path to file.
168 // If path entry begins with $$LyX/, use system_lyxdir
169 // If path entry begins with $$User/, use user_lyxdir
170 // Example: "$$User/doc;$$LyX/doc"
171 string const FileOpenSearch(string const & path, string const & name,
176 bool notfound = true;
177 string tmppath = split(path, path_element, ';');
179 while (notfound && !path_element.empty()) {
180 path_element = os::slashify_path(path_element);
181 if (!suffixIs(path_element, '/'))
183 path_element = subst(path_element, "$$LyX", system_lyxdir);
184 path_element = subst(path_element, "$$User", user_lyxdir);
186 real_file = FileSearch(path_element, name, ext);
188 if (real_file.empty()) {
190 tmppath = split(tmppath, path_element, ';');
191 } while (!tmppath.empty() && path_element.empty());
197 if (ext.empty() && notfound) {
198 real_file = FileOpenSearch(path, name, "exe");
199 if (notfound) real_file = FileOpenSearch(path, name, "cmd");
206 /// Returns a vector of all files in directory dir having extension ext.
207 vector<string> const DirList(string const & dir, string const & ext)
209 // This is a non-error checking C/system implementation
211 if (!ext.empty() && ext[0] != '.')
215 vector<string> dirlist;
216 DIR * dirp = ::opendir(dir.c_str());
219 << "Directory \"" << dir
220 << "\" does not exist to DirList." << endl;
225 while ((dire = ::readdir(dirp))) {
226 string const fil = dire->d_name;
227 if (suffixIs(fil, extension)) {
228 dirlist.push_back(fil);
233 /* I would have prefered to take a vector<string>& as parameter so
234 that we could avoid the copy of the vector when returning.
236 dirlist.swap(argvec);
237 to avoid the copy. (Lgb)
239 /* A C++ implementaion will look like this:
240 string extension(ext);
241 if (extension[0] != '.') extension.insert(0, 1, '.');
242 vector<string> dirlist;
243 directory_iterator dit("dir");
244 while (dit != directory_iterator()) {
245 string fil = dit->filename;
246 if (prefixIs(fil, extension)) {
247 dirlist.push_back(fil);
251 dirlist.swap(argvec);
257 // Returns the real name of file name in directory path, with optional
259 string const FileSearch(string const & path, string const & name,
262 // if `name' is an absolute path, we ignore the setting of `path'
263 // Expand Environmentvariables in 'name'
264 string const tmpname = ReplaceEnvironmentPath(name);
265 string fullname = MakeAbsPath(tmpname, path);
266 // search first without extension, then with it.
267 if (IsFileReadable(fullname))
269 else if (ext.empty())
271 else { // Is it not more reasonable to use ChangeExtension()? (SMiyata)
274 if (IsFileReadable(fullname))
282 // Search the file name.ext in the subdirectory dir of
284 // 2) build_lyxdir (if not empty)
286 string const LibFileSearch(string const & dir, string const & name,
289 string fullname = FileSearch(AddPath(user_lyxdir, dir), name, ext);
290 if (!fullname.empty())
293 if (!build_lyxdir.empty())
294 fullname = FileSearch(AddPath(build_lyxdir, dir), name, ext);
295 if (!fullname.empty())
298 return FileSearch(AddPath(system_lyxdir, dir), name, ext);
303 i18nLibFileSearch(string const & dir, string const & name,
306 // this comment is from intl/dcigettext.c. We try to mimick this
308 /* The highest priority value is the `LANGUAGE' environment
309 variable. But we don't use the value if the currently
310 selected locale is the C locale. This is a GNU extension. */
312 string const lc_all = GetEnv("LC_ALL");
313 string lang = GetEnv("LANGUAGE");
314 if (lang.empty() || lc_all == "C") {
317 lang = GetEnv("LANG");
321 lang = token(lang, '_', 0);
323 if (lang.empty() || lang == "C")
324 return LibFileSearch(dir, name, ext);
326 string const tmp = LibFileSearch(dir, lang + '_' + name,
331 return LibFileSearch(dir, name, ext);
336 string const LibScriptSearch(string const & command)
339 string args = command;
340 args = split(args, script, ' ');
341 script = LibFileSearch("scripts", script);
344 else if (args.empty())
347 return script + ' ' + args;
351 string const GetEnv(string const & envname)
353 // f.ex. what about error checking?
354 char const * const ch = getenv(envname.c_str());
355 string const envstr = !ch ? "" : ch;
360 string const GetEnvPath(string const & name)
363 string const pathlist = subst(GetEnv(name), ':', ';');
365 string const pathlist = os::slashify_path(GetEnv(name));
367 return rtrim(pathlist, ";");
371 bool PutEnv(string const & envstr)
373 // CHECK Look at and fix this.
374 // f.ex. what about error checking?
377 // this leaks, but what can we do about it?
378 // Is doing a getenv() and a free() of the older value
379 // a good idea? (JMarc)
380 // Actually we don't have to leak...calling putenv like this
381 // should be enough: ... and this is obviously not enough if putenv
382 // does not make a copy of the string. It is also not very wise to
383 // put a string on the free store. If we have to leak we should do it
385 char * leaker = new char[envstr.length() + 1];
386 envstr.copy(leaker, envstr.length());
387 leaker[envstr.length()] = '\0';
388 int const retval = lyx::putenv(leaker);
390 // If putenv does not make a copy of the char const * this
391 // is very dangerous. OTOH if it does take a copy this is the
393 // The only implementation of putenv that I have seen does not
394 // allocate memory. _And_ after testing the putenv in glibc it
395 // seems that we need to make a copy of the string contents.
396 // I will enable the above.
397 //int retval = lyx::putenv(envstr.c_str());
401 string const str = envstr.split(varname,'=');
402 int const retval = ::setenv(varname.c_str(), str.c_str(), true);
404 // No environment setting function. Can this happen?
405 int const retval = 1; //return an error condition.
412 bool PutEnvPath(string const & envstr)
414 return PutEnv(envstr);
420 int DeleteAllFilesInDir(string const & path)
422 // I have decided that we will be using parts from the boost
423 // library. Check out http://www.boost.org/
424 // For directory access we will then use the directory_iterator.
425 // Then the code will be something like:
426 // directory_iterator dit(path);
427 // directory_iterator dend;
428 // if (dit == dend) {
429 // Alert::err_alert(_("Error! Cannot open directory:"), path);
432 // for (; dit != dend; ++dit) {
433 // string filename(*dit);
434 // if (filename == "." || filename == "..")
436 // string unlinkpath(AddName(path, filename));
437 // if (lyx::unlink(unlinkpath))
438 // Alert::err_alert(_("Error! Could not remove file:"),
442 DIR * dir = ::opendir(path.c_str());
444 Alert::err_alert (_("Error! Cannot open directory:"), path);
448 int return_value = 0;
449 while ((de = readdir(dir))) {
450 string const temp = de->d_name;
451 if (temp == "." || temp == "..")
453 string const unlinkpath = AddName (path, temp);
455 lyxerr[Debug::FILES] << "Deleting file: " << unlinkpath
459 FileInfo fi(unlinkpath);
460 if (fi.isOK() && fi.isDir())
461 deleted = (DeleteAllFilesInDir(unlinkpath) == 0);
462 deleted &= (lyx::unlink(unlinkpath) == 0);
464 Alert::err_alert(_("Error! Could not remove file:"),
474 string const CreateTmpDir(string const & tempdir, string const & mask)
477 << "CreateTmpDir: tempdir=`" << tempdir << "'\n"
478 << "CreateTmpDir: mask=`" << mask << '\'' << endl;
480 string const tmpfl(lyx::tempName(tempdir, mask));
481 // lyx::tempName actually creates a file to make sure that it
482 // stays unique. So we have to delete it before we can create
483 // a dir with the same name. Note also that we are not thread
484 // safe because of the gap between unlink and mkdir. (Lgb)
485 lyx::unlink(tmpfl.c_str());
487 if (tmpfl.empty() || lyx::mkdir(tmpfl, 0700)) {
488 Alert::err_alert(_("Error! Couldn't create temporary directory:"),
492 return MakeAbsPath(tmpfl);
496 int DestroyTmpDir(string const & tmpdir, bool Allfiles)
501 if (Allfiles && DeleteAllFilesInDir(tmpdir)) {
504 if (lyx::rmdir(tmpdir)) {
505 Alert::err_alert(_("Error! Couldn't delete temporary directory:"),
515 string const CreateBufferTmpDir(string const & pathfor)
518 static string const tmpdir(pathfor.empty() ? os::getTmpDir() : pathfor);
519 // We are in our own directory. Why bother to mangle name?
520 // In fact I wrote this code to circumvent a problematic behaviour (bug?)
522 string const tmpfl = tmpdir + "/lyx_tmpbuf" + tostr(count++);
523 if (lyx::mkdir(tmpfl, 0777)) {
524 Alert::err_alert(_("Error! Couldn't create temporary directory:"),
532 int DestroyBufferTmpDir(string const & tmpdir)
534 return DestroyTmpDir(tmpdir, true);
538 string const CreateLyXTmpDir(string const & deflt)
540 if ((!deflt.empty()) && (deflt != "/tmp")) {
541 if (lyx::mkdir(deflt, 0777)) {
545 return CreateTmpDir(deflt, "lyx_tmpdir");
552 return CreateTmpDir("/tmp", "lyx_tmpdir");
557 // FIXME: no need for separate method like this ...
558 int DestroyLyXTmpDir(string const & tmpdir)
560 return DestroyTmpDir(tmpdir, true);
564 // Creates directory. Returns true if succesfull
565 bool createDirectory(string const & path, int permission)
567 string temp(rtrim(os::slashify_path(path), "/"));
570 Alert::alert(_("Internal error!"),
571 _("Call to createDirectory with invalid name"));
575 if (lyx::mkdir(temp, permission)) {
576 Alert::err_alert (_("Error! Couldn't create directory:"), temp);
583 // Strip filename from path name
584 string const OnlyPath(string const & Filename)
586 // If empty filename, return empty
587 if (Filename.empty()) return Filename;
589 // Find last / or start of filename
590 string::size_type j = Filename.rfind('/');
591 if (j == string::npos)
593 return Filename.substr(0, j + 1);
597 // Convert relative path into absolute path based on a basepath.
598 // If relpath is absolute, just use that.
599 // If basepath is empty, use CWD as base.
600 string const MakeAbsPath(string const & RelPath, string const & BasePath)
602 // checks for already absolute path
603 if (os::is_absolute_path(RelPath))
606 // Copies given paths
607 string TempRel(os::slashify_path(RelPath));
608 // Since TempRel is NOT absolute, we can safely replace "//" with "/"
609 TempRel = subst(TempRel, "//", "/");
613 if (os::is_absolute_path(BasePath))
616 TempBase = AddPath(lyx::getcwd(), BasePath);
618 // Handle /./ at the end of the path
619 while (suffixIs(TempBase, "/./"))
620 TempBase.erase(TempBase.length() - 2);
622 // processes relative path
623 string RTemp(TempRel);
626 while (!RTemp.empty()) {
628 RTemp = split(RTemp, Temp, '/');
630 if (Temp == ".") continue;
632 // Remove one level of TempBase
633 string::difference_type i = TempBase.length() - 2;
636 while (i > 0 && TempBase[i] != '/') --i;
640 while (i > 2 && TempBase[i] != '/') --i;
643 TempBase.erase(i, string::npos);
646 } else if (Temp.empty() && !RTemp.empty()) {
647 TempBase = os::current_root() + RTemp;
650 // Add this piece to TempBase
651 if (!suffixIs(TempBase, '/'))
657 // returns absolute path
658 return os::slashify_path(TempBase);
662 // Correctly append filename to the pathname.
663 // If pathname is '.', then don't use pathname.
664 // Chops any path of filename.
665 string const AddName(string const & path, string const & fname)
668 string const basename(OnlyFilename(fname));
672 if (path != "." && path != "./" && !path.empty()) {
673 buf = os::slashify_path(path);
674 if (!suffixIs(path, '/'))
678 return buf + basename;
682 // Strips path from filename
683 string const OnlyFilename(string const & fname)
688 string::size_type j = fname.rfind('/');
689 if (j == string::npos) // no '/' in fname
693 return fname.substr(j + 1);
697 /// Returns true is path is absolute
698 bool AbsolutePath(string const & path)
700 return os::is_absolute_path(path);
705 // Create absolute path. If impossible, don't do anything
706 // Supports ./ and ~/. Later we can add support for ~logname/. (Asger)
707 string const ExpandPath(string const & path)
709 // checks for already absolute path
710 string RTemp(ReplaceEnvironmentPath(path));
711 if (os::is_absolute_path(RTemp))
715 string const copy(RTemp);
718 RTemp = split(RTemp, Temp, '/');
721 return lyx::getcwd() /*GetCWD()*/ + '/' + RTemp;
724 return GetEnvPath("HOME") + '/' + RTemp;
727 return MakeAbsPath(copy);
729 // Don't know how to handle this
735 // Constracts path/../path
736 // Can't handle "../../" or "/../" (Asger)
737 string const NormalizePath(string const & path)
743 if (os::is_absolute_path(path))
746 // Make implicit current directory explicit
749 while (!RTemp.empty()) {
751 RTemp = split(RTemp, Temp, '/');
755 } else if (Temp == "..") {
756 // Remove one level of TempBase
757 string::difference_type i = TempBase.length() - 2;
758 while (i > 0 && TempBase[i] != '/')
760 if (i >= 0 && TempBase[i] == '/')
761 TempBase.erase(i + 1, string::npos);
765 TempBase += Temp + '/';
769 // returns absolute path
774 string const GetFileContents(string const & fname)
776 FileInfo finfo(fname);
778 ifstream ifs(fname.c_str());
783 return STRCONV(ofs.str());
786 lyxerr << "LyX was not able to read file '" << fname << '\'' << endl;
792 // Search ${...} as Variable-Name inside the string and replace it with
793 // the denoted environmentvariable
794 // Allow Variables according to
795 // variable := '$' '{' [A-Za-z_]{[A-Za-z_0-9]*} '}'
798 string const ReplaceEnvironmentPath(string const & path)
801 // CompareChar: Environment variables starts with this character
802 // PathChar: Next path component start with this character
803 // while CompareChar found do:
804 // Split String with PathChar
805 // Search Environmentvariable
806 // if found: Replace Strings
808 char const CompareChar = '$';
809 char const FirstChar = '{';
810 char const EndChar = '}';
811 char const UnderscoreChar = '_';
812 string EndString; EndString += EndChar;
813 string FirstString; FirstString += FirstChar;
814 string CompareString; CompareString += CompareChar;
815 string const RegExp("*}*"); // Exist EndChar inside a String?
817 // first: Search for a '$' - Sign.
819 string result1; //(copy); // for split-calls
820 string result0 = split(path, result1, CompareChar);
821 while (!result0.empty()) {
822 string copy1(result0); // contains String after $
824 // Check, if there is an EndChar inside original String.
826 if (!regexMatch(copy1, RegExp)) {
827 // No EndChar inside. So we are finished
828 result1 += CompareString + result0;
834 string res0 = split(copy1, res1, EndChar);
835 // Now res1 holds the environmentvariable
836 // First, check, if Contents is ok.
837 if (res1.empty()) { // No environmentvariable. Continue Loop.
838 result1 += CompareString + FirstString;
842 // check contents of res1
843 char const * res1_contents = res1.c_str();
844 if (*res1_contents != FirstChar) {
845 // Again No Environmentvariable
846 result1 += CompareString;
850 // Check for variable names
851 // Situation ${} is detected as "No Environmentvariable"
852 char const * cp1 = res1_contents + 1;
853 bool result = isalpha(*cp1) || (*cp1 == UnderscoreChar);
855 while (*cp1 && result) {
856 result = isalnum(*cp1) ||
857 (*cp1 == UnderscoreChar);
862 // no correct variable name
863 result1 += CompareString + res1 + EndString;
864 result0 = split(res0, res1, CompareChar);
869 string env(GetEnv(res1_contents + 1));
871 // Congratulations. Environmentvariable found
874 result1 += CompareString + res1 + EndString;
877 result0 = split(res0, res1, CompareChar);
884 // Make relative path out of two absolute paths
885 string const MakeRelPath(string const & abspath, string const & basepath)
886 // Makes relative path out of absolute path. If it is deeper than basepath,
887 // it's easy. If basepath and abspath share something (they are all deeper
888 // than some directory), it'll be rendered using ..'s. If they are completely
889 // different, then the absolute path will be used as relative path.
891 string::size_type const abslen = abspath.length();
892 string::size_type const baselen = basepath.length();
894 string::size_type i = os::common_path(abspath, basepath);
897 // actually no match - cannot make it relative
901 // Count how many dirs there are in basepath above match
902 // and append as many '..''s into relpath
904 string::size_type j = i;
905 while (j < baselen) {
906 if (basepath[j] == '/') {
907 if (j + 1 == baselen)
914 // Append relative stuff from common directory to abspath
915 if (abspath[i] == '/')
917 for (; i < abslen; ++i)
920 if (suffixIs(buf, '/'))
921 buf.erase(buf.length() - 1);
922 // Substitute empty with .
929 // Append sub-directory(ies) to a path in an intelligent way
930 string const AddPath(string const & path, string const & path_2)
933 string const path2 = os::slashify_path(path_2);
935 if (!path.empty() && path != "." && path != "./") {
936 buf = os::slashify_path(path);
937 if (path[path.length() - 1] != '/')
941 if (!path2.empty()) {
942 string::size_type const p2start = path2.find_first_not_of('/');
943 string::size_type const p2end = path2.find_last_not_of('/');
944 string const tmp = path2.substr(p2start, p2end - p2start + 1);
952 Change extension of oldname to extension.
953 Strips path off if no_path == true.
954 If no extension on oldname, just appends.
956 string const ChangeExtension(string const & oldname, string const & extension)
958 string::size_type const last_slash = oldname.rfind('/');
959 string::size_type last_dot = oldname.rfind('.');
960 if (last_dot < last_slash && last_slash != string::npos)
961 last_dot = string::npos;
964 // Make sure the extension starts with a dot
965 if (!extension.empty() && extension[0] != '.')
966 ext= '.' + extension;
970 return os::slashify_path(oldname.substr(0, last_dot) + ext);
974 /// Return the extension of the file (not including the .)
975 string const GetExtension(string const & name)
977 string::size_type const last_slash = name.rfind('/');
978 string::size_type const last_dot = name.rfind('.');
979 if (last_dot != string::npos &&
980 (last_slash == string::npos || last_dot > last_slash))
981 return name.substr(last_dot + 1,
982 name.length() - (last_dot + 1));
987 // the different filetypes and what they contain in one of the first lines
988 // (dots are any characters). (Herbert 20020131)
991 // EPS %!PS-Adobe-3.0 EPSF...
998 // PBM P1... or P4 (B/W)
999 // PGM P2... or P5 (Grayscale)
1000 // PPM P3... or P6 (color)
1001 // PS %!PS-Adobe-2.0 or 1.0, no "EPSF"!
1002 // SGI \001\332... (decimal 474)
1004 // TIFF II... or MM...
1005 // XBM ..._bits[]...
1006 // XPM /* XPM */ sometimes missing (f.ex. tgif-export)
1007 // ...static char *...
1008 // XWD \000\000\000\151 (0x00006900) decimal 105
1010 // GZIP \037\213\010\010... http://www.ietf.org/rfc/rfc1952.txt
1011 // ZIP PK... http://www.halyava.ru/document/ind_arch.htm
1012 // Z \037\177 UNIX compress
1014 /// return the "extension" which belongs to the contents.
1015 /// for no knowing contents return the extension. Without
1016 /// an extension and unknown contents we return "user"
1017 string const getExtFromContents(string const & filename)
1020 if (filename.empty() || !IsFileReadable(filename))
1024 ifstream ifs(filename.c_str());
1026 // Couldn't open file...
1030 string const gzipStamp = "\037\213\010\010";
1033 string const zipStamp = "PK";
1036 string const compressStamp = "\037\177";
1038 // Maximum strings to read
1039 int const max_count = 50;
1043 bool firstLine = true;
1044 while ((count++ < max_count) && format.empty()) {
1046 lyxerr[Debug::GRAPHICS]
1047 << "filetools(getExtFromContents)\n"
1048 << "\tFile type not recognised before EOF!"
1054 string const stamp = str.substr(0,2);
1055 if (firstLine && str.size() >= 2) {
1056 // at first we check for a zipped file, because this
1057 // information is saved in the first bytes of the file!
1058 // also some graphic formats which save the information
1059 // in the first line, too.
1060 if (prefixIs(str, gzipStamp)) {
1063 } else if (stamp == zipStamp) {
1066 } else if (stamp == compressStamp) {
1067 format = "compress";
1069 // the graphics part
1070 } else if (stamp == "BM") {
1073 } else if (stamp == "\001\332") {
1077 // Don't need to use str.at(0), str.at(1) because
1078 // we already know that str.size() >= 2
1079 } else if (str[0] == 'P') {
1095 } else if ((stamp == "II") || (stamp == "MM")) {
1098 } else if (prefixIs(str,"%TGIF")) {
1101 } else if (prefixIs(str,"#FIG")) {
1104 } else if (prefixIs(str,"GIF")) {
1107 } else if (str.size() > 3) {
1108 int const c = ((str[0] << 24) & (str[1] << 16) &
1109 (str[2] << 8) & str[3]);
1118 if (!format.empty())
1120 else if (contains(str,"EPSF"))
1121 // dummy, if we have wrong file description like
1122 // %!PS-Adobe-2.0EPSF"
1125 else if (contains(str,"Grace"))
1128 else if (contains(str,"JFIF"))
1131 else if (contains(str,"%PDF"))
1134 else if (contains(str,"PNG"))
1137 else if (contains(str,"%!PS-Adobe")) {
1140 if (contains(str,"EPSF"))
1146 else if (contains(str,"_bits[]"))
1149 else if (contains(str,"XPM") || contains(str, "static char *"))
1152 else if (contains(str,"BITPIX"))
1156 if (!format.empty()) {
1157 lyxerr[Debug::GRAPHICS]
1158 << "Recognised Fileformat: " << format << endl;
1162 string const ext(GetExtension(filename));
1163 lyxerr[Debug::GRAPHICS]
1164 << "filetools(getExtFromContents)\n"
1165 << "\tCouldn't find a known Type!\n";
1167 lyxerr[Debug::GRAPHICS]
1168 << "\twill take the file extension -> "
1172 lyxerr[Debug::GRAPHICS]
1173 << "\twill use ext or a \"user\" defined format" << endl;
1179 /// check for zipped file
1180 bool zippedFile(string const & name)
1182 string const type = getExtFromContents(name);
1183 if (contains("gzip zip compress", type) && !type.empty())
1189 string const unzipFile(string const & zipped_file)
1191 string const file = ChangeExtension(zipped_file, string());
1192 string const tempfile = lyx::tempName(string(), file);
1194 string const command = "gunzip -c " + zipped_file + " > " + tempfile;
1196 one.startscript(Systemcall::Wait, command);
1197 // test that command was executed successfully (anon)
1198 // yes, please do. (Lgb)
1203 // Creates a nice compact path for displaying
1205 MakeDisplayPath (string const & path, unsigned int threshold)
1207 string::size_type const l1 = path.length();
1209 // First, we try a relative path compared to home
1210 string const home(GetEnvPath("HOME"));
1211 string relhome = MakeRelPath(path, home);
1213 string::size_type l2 = relhome.length();
1217 // If we backup from home or don't have a relative path,
1218 // this try is no good
1219 if (prefixIs(relhome, "../") || os::is_absolute_path(relhome)) {
1220 // relative path was no good, just use the original path
1227 // Is the path too long?
1228 if (l2 > threshold) {
1234 while (relhome.length() > threshold)
1235 relhome = split(relhome, temp, '/');
1237 // Did we shortend everything away?
1238 if (relhome.empty()) {
1239 // Yes, filename in itself is too long.
1240 // Pick the start and the end of the filename.
1241 relhome = OnlyFilename(path);
1242 string const head = relhome.substr(0, threshold/2 - 3);
1244 l2 = relhome.length();
1246 relhome.substr(l2 - threshold/2 - 2, l2 - 1);
1247 relhome = head + "..." + tail;
1250 return prefix + relhome;
1254 bool LyXReadLink(string const & file, string & link, bool resolve)
1256 char linkbuffer[512];
1257 // Should be PATH_MAX but that needs autconf support
1258 int const nRead = ::readlink(file.c_str(),
1259 linkbuffer, sizeof(linkbuffer) - 1);
1262 linkbuffer[nRead] = '\0'; // terminator
1264 link = MakeAbsPath(linkbuffer, OnlyPath(file));
1271 cmd_ret const RunCommand(string const & cmd)
1273 // One question is if we should use popen or
1274 // create our own popen based on fork, exec, pipe
1275 // of course the best would be to have a
1276 // pstream (process stream), with the
1277 // variants ipstream, opstream
1279 FILE * inf = ::popen(cmd.c_str(), os::popen_read_mode());
1281 // (Claus Hentschel) Check if popen was succesful ;-)
1283 return make_pair(-1, string());
1288 ret += static_cast<char>(c);
1291 int const pret = pclose(inf);
1292 return make_pair(pret, ret);
1296 string const findtexfile(string const & fil, string const & /*format*/)
1298 /* There is no problem to extend this function too use other
1299 methods to look for files. It could be setup to look
1300 in environment paths and also if wanted as a last resort
1301 to a recursive find. One of the easier extensions would
1302 perhaps be to use the LyX file lookup methods. But! I am
1303 going to implement this until I see some demand for it.
1307 // If the file can be found directly, we just return a
1308 // absolute path version of it.
1309 if (FileInfo(fil).exist())
1310 return MakeAbsPath(fil);
1312 // No we try to find it using kpsewhich.
1313 // It seems from the kpsewhich manual page that it is safe to use
1314 // kpsewhich without --format: "When the --format option is not
1315 // given, the search path used when looking for a file is inferred
1316 // from the name given, by looking for a known extension. If no
1317 // known extension is found, the search path for TeX source files
1319 // However, we want to take advantage of the format sine almost all
1320 // the different formats has environment variables that can be used
1321 // to controll which paths to search. f.ex. bib looks in
1322 // BIBINPUTS and TEXBIB. Small list follows:
1323 // bib - BIBINPUTS, TEXBIB
1325 // graphic/figure - TEXPICTS, TEXINPUTS
1326 // ist - TEXINDEXSTYLE, INDEXSTYLE
1327 // pk - PROGRAMFONTS, PKFONTS, TEXPKS, GLYPHFONTS, TEXFONTS
1329 // tfm - TFMFONTS, TEXFONTS
1330 // This means that to use kpsewhich in the best possible way we
1331 // should help it by setting additional path in the approp. envir.var.
1332 string const kpsecmd = "kpsewhich " + fil;
1334 cmd_ret const c = RunCommand(kpsecmd);
1336 lyxerr[Debug::LATEX] << "kpse status = " << c.first << '\n'
1337 << "kpse result = `" << rtrim(c.second, "\n")
1340 return os::internal_path(rtrim(c.second, "\n\r"));
1346 void removeAutosaveFile(string const & filename)
1348 string a = OnlyPath(filename);
1350 a += OnlyFilename(filename);
1352 FileInfo const fileinfo(a);
1353 if (fileinfo.exist()) {
1354 if (lyx::unlink(a) != 0) {
1355 Alert::err_alert(_("Could not delete auto-save file!"), a);
1361 void readBB_lyxerrMessage(string const & file, bool & zipped,
1362 string const & message)
1364 lyxerr[Debug::GRAPHICS] << "[readBB_from_PSFile] "
1365 << message << std::endl;
1371 string const readBB_from_PSFile(string const & file)
1373 // in a (e)ps-file it's an entry like %%BoundingBox:23 45 321 345
1374 // It seems that every command in the header has an own line,
1375 // getline() should work for all files.
1376 // On the other hand some plot programs write the bb at the
1377 // end of the file. Than we have in the header:
1378 // %%BoundingBox: (atend)
1379 // In this case we must check the end.
1380 bool zipped = zippedFile(file);
1381 string const file_ = zipped ?
1382 string(unzipFile(file)) : string(file);
1383 string const format = getExtFromContents(file_);
1385 if (format != "eps" && format != "ps") {
1386 readBB_lyxerrMessage(file_, zipped,"no(e)ps-format");
1390 std::ifstream is(file_.c_str());
1394 if (contains(s,"%%BoundingBox:") && !contains(s,"atend")) {
1395 string const bb = ltrim(s.substr(14));
1396 readBB_lyxerrMessage(file_, zipped, bb);
1400 readBB_lyxerrMessage(file_, zipped, "no bb found");