2 filetools.C (former paths.C) - part of LyX project
3 General path-mangling functions
4 Copyright 1996 Ivan Schreter
5 Parts Copyright 1996 Dirk Niggemann
6 Parts Copyright 1985, 1990, 1993 Free Software Foundation, Inc.
7 Parts Copyright 1996 Asger Alstrup
11 lyx-filetool.C : tools functions for file/path handling
12 this file is part of LyX, the High Level Word Processor
13 Copyright 1995-1996, Matthias Ettrich and the LyX Team
20 #pragma implementation "filetools.h"
24 #include "support/lstrings.h"
25 #include "support/systemcall.h"
27 #include "filetools.h"
28 #include "frontends/Alert.h"
30 #include "support/path.h" // I know it's OS/2 specific (SMiyata)
47 // Which part of this is still necessary? (JMarc).
50 # define NAMLEN(dirent) strlen((dirent)->d_name)
52 # define dirent direct
53 # define NAMLEN(dirent) (dirent)->d_namlen
55 # include <sys/ndir.h>
65 #ifndef CXX_GLOBAL_CSTD
80 extern string system_lyxdir;
81 extern string build_lyxdir;
82 extern string user_lyxdir;
83 extern string system_tempdir;
84 extern string system_packageList;
87 bool IsLyXFilename(string const & filename)
89 return suffixIs(lowercase(filename), ".lyx");
93 bool IsSGMLFilename(string const & filename)
95 return suffixIs(lowercase(filename), ".sgml");
99 // Substitutes spaces with underscores in filename (and path)
100 string const MakeLatexName(string const & file)
102 string name = OnlyFilename(file);
103 string const path = OnlyPath(file);
105 for (string::size_type i = 0; i < name.length(); ++i) {
106 name[i] &= 0x7f; // set 8th bit to 0
109 // ok so we scan through the string twice, but who cares.
110 string const keep("abcdefghijklmnopqrstuvwxyz"
111 "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
112 "@!\"'()*+,-./0123456789:;<=>?[]`|");
114 string::size_type pos = 0;
115 while ((pos = name.find_first_not_of(keep, pos)) != string::npos) {
118 return AddName(path, name);
122 // Substitutes spaces with underscores in filename (and path)
123 string const QuoteName(string const & name)
125 return (os::shell() == os::UNIX) ?
131 // Is a file readable ?
132 bool IsFileReadable (string const & path)
135 if (file.isOK() && file.isRegular() && file.readable())
142 // Is a file read_only?
143 // return 1 read-write
145 // -1 error (doesn't exist, no access, anything else)
146 int IsFileWriteable (string const & path)
150 if (fi.access(FileInfo::wperm|FileInfo::rperm)) // read-write
152 if (fi.readable()) // read-only
154 return -1; // everything else.
158 //returns true: dir writeable
159 // false: not writeable
160 bool IsDirWriteable (string const & path)
162 lyxerr[Debug::FILES] << "IsDirWriteable: " << path << endl;
164 string const tmpfl(lyx::tempName(path, "lyxwritetest"));
174 // Uses a string of paths separated by ";"s to find a file to open.
175 // Can't cope with pathnames with a ';' in them. Returns full path to file.
176 // If path entry begins with $$LyX/, use system_lyxdir
177 // If path entry begins with $$User/, use user_lyxdir
178 // Example: "$$User/doc;$$LyX/doc"
179 string const FileOpenSearch (string const & path, string const & name,
182 string real_file, path_element;
183 bool notfound = true;
184 string tmppath = split(path, path_element, ';');
186 while (notfound && !path_element.empty()) {
187 path_element = os::slashify_path(path_element);
188 if (!suffixIs(path_element, '/'))
190 path_element = subst(path_element, "$$LyX", system_lyxdir);
191 path_element = subst(path_element, "$$User", user_lyxdir);
193 real_file = FileSearch(path_element, name, ext);
195 if (real_file.empty()) {
197 tmppath = split(tmppath, path_element, ';');
198 } while (!tmppath.empty() && path_element.empty());
204 if (ext.empty() && notfound) {
205 real_file = FileOpenSearch(path, name, "exe");
206 if (notfound) real_file = FileOpenSearch(path, name, "cmd");
213 /// Returns a vector of all files in directory dir having extension ext.
214 vector<string> const DirList(string const & dir, string const & ext)
216 // This is a non-error checking C/system implementation
217 string extension(ext);
218 if (!extension.empty() && extension[0] != '.')
219 extension.insert(0, ".");
220 vector<string> dirlist;
221 DIR * dirp = ::opendir(dir.c_str());
224 << "Directory \"" << dir
225 << "\" does not exist to DirList." << endl;
230 while ((dire = ::readdir(dirp))) {
231 string const fil = dire->d_name;
232 if (suffixIs(fil, extension)) {
233 dirlist.push_back(fil);
238 /* I would have prefered to take a vector<string>& as parameter so
239 that we could avoid the copy of the vector when returning.
241 dirlist.swap(argvec);
242 to avoid the copy. (Lgb)
244 /* A C++ implementaion will look like this:
245 string extension(ext);
246 if (extension[0] != '.') extension.insert(0, ".");
247 vector<string> dirlist;
248 directory_iterator dit("dir");
249 while (dit != directory_iterator()) {
250 string fil = dit->filename;
251 if (prefixIs(fil, extension)) {
252 dirlist.push_back(fil);
256 dirlist.swap(argvec);
262 // Returns the real name of file name in directory path, with optional
264 string const FileSearch(string const & path, string const & name,
267 // if `name' is an absolute path, we ignore the setting of `path'
268 // Expand Environmentvariables in 'name'
269 string const tmpname = ReplaceEnvironmentPath(name);
270 string fullname = MakeAbsPath(tmpname, path);
271 // search first without extension, then with it.
272 if (IsFileReadable(fullname))
274 else if (ext.empty())
276 else { // Is it not more reasonable to use ChangeExtension()? (SMiyata)
279 if (IsFileReadable(fullname))
287 // Search the file name.ext in the subdirectory dir of
289 // 2) build_lyxdir (if not empty)
291 string const LibFileSearch(string const & dir, string const & name,
294 string fullname = FileSearch(AddPath(user_lyxdir, dir), name, ext);
295 if (!fullname.empty())
298 if (!build_lyxdir.empty())
299 fullname = FileSearch(AddPath(build_lyxdir, dir), name, ext);
300 if (!fullname.empty())
303 return FileSearch(AddPath(system_lyxdir, dir), name, ext);
308 i18nLibFileSearch(string const & dir, string const & name,
311 // this comment is from intl/dcigettext.c. We try to mimick this
313 /* The highest priority value is the `LANGUAGE' environment
314 variable. But we don't use the value if the currently
315 selected locale is the C locale. This is a GNU extension. */
317 string const lc_all = GetEnv("LC_ALL");
318 string lang = GetEnv("LANGUAGE");
319 if (lang.empty() || lc_all == "C") {
322 lang = GetEnv("LANG");
326 lang = token(lang, '_', 0);
328 if (lang.empty() || lang == "C")
329 return LibFileSearch(dir, name, ext);
331 string const tmp = LibFileSearch(dir, lang + '_' + name,
336 return LibFileSearch(dir, name, ext);
341 string const LibScriptSearch(string const & command)
344 string args = command;
345 split(args, script, ' ');
346 script = LibFileSearch("scripts", script);
349 else if (args.empty())
352 return script + ' ' + args;
356 string const GetEnv(string const & envname)
358 // f.ex. what about error checking?
359 char const * const ch = getenv(envname.c_str());
360 string const envstr = !ch ? "" : ch;
365 string const GetEnvPath(string const & name)
368 string const pathlist = subst(GetEnv(name), ':', ';');
370 string const pathlist = os::slashify_path(GetEnv(name));
372 return strip(pathlist, ';');
376 bool PutEnv(string const & envstr)
378 // CHECK Look at and fix this.
379 // f.ex. what about error checking?
382 // this leaks, but what can we do about it?
383 // Is doing a getenv() and a free() of the older value
384 // a good idea? (JMarc)
385 // Actually we don't have to leak...calling putenv like this
386 // should be enough: ... and this is obviously not enough if putenv
387 // does not make a copy of the string. It is also not very wise to
388 // put a string on the free store. If we have to leak we should do it
390 char * leaker = new char[envstr.length() + 1];
391 envstr.copy(leaker, envstr.length());
392 leaker[envstr.length()] = '\0';
393 int const retval = lyx::putenv(leaker);
395 // If putenv does not make a copy of the char const * this
396 // is very dangerous. OTOH if it does take a copy this is the
398 // The only implementation of putenv that I have seen does not
399 // allocate memory. _And_ after testing the putenv in glibc it
400 // seems that we need to make a copy of the string contents.
401 // I will enable the above.
402 //int retval = lyx::putenv(envstr.c_str());
406 string const str = envstr.split(varname,'=');
407 int const retval = ::setenv(varname.c_str(), str.c_str(), true);
409 // No environment setting function. Can this happen?
410 int const retval = 1; //return an error condition.
417 bool PutEnvPath(string const & envstr)
419 return PutEnv(envstr);
425 int DeleteAllFilesInDir (string const & path)
427 // I have decided that we will be using parts from the boost
428 // library. Check out http://www.boost.org/
429 // For directory access we will then use the directory_iterator.
430 // Then the code will be something like:
431 // directory_iterator dit(path);
432 // directory_iterator dend;
433 // if (dit == dend) {
434 // Alert::err_alert(_("Error! Cannot open directory:"), path);
437 // for (; dit != dend; ++dit) {
438 // string filename(*dit);
439 // if (filename == "." || filename == "..")
441 // string unlinkpath(AddName(path, filename));
442 // if (lyx::unlink(unlinkpath))
443 // Alert::err_alert(_("Error! Could not remove file:"),
447 DIR * dir = ::opendir(path.c_str());
449 Alert::err_alert (_("Error! Cannot open directory:"), path);
453 int return_value = 0;
454 while ((de = readdir(dir))) {
455 string const temp = de->d_name;
456 if (temp == "." || temp == "..")
458 string const unlinkpath = AddName (path, temp);
460 lyxerr[Debug::FILES] << "Deleting file: " << unlinkpath
464 FileInfo fi(unlinkpath);
465 if (fi.isOK() && fi.isDir())
466 deleted = (DeleteAllFilesInDir(unlinkpath) == 0);
467 deleted &= (lyx::unlink(unlinkpath) == 0);
469 Alert::err_alert(_("Error! Could not remove file:"),
479 string const CreateTmpDir(string const & tempdir, string const & mask)
482 << "CreateTmpDir: tempdir=`" << tempdir << "'\n"
483 << "CreateTmpDir: mask=`" << mask << "'" << endl;
485 string const tmpfl(lyx::tempName(tempdir, mask));
486 // lyx::tempName actually creates a file to make sure that it
487 // stays unique. So we have to delete it before we can create
488 // a dir with the same name. Note also that we are not thread
489 // safe because of the gap between unlink and mkdir. (Lgb)
490 lyx::unlink(tmpfl.c_str());
492 if (tmpfl.empty() || lyx::mkdir(tmpfl, 0700)) {
493 Alert::err_alert(_("Error! Couldn't create temporary directory:"),
497 return MakeAbsPath(tmpfl);
501 int DestroyTmpDir(string const & tmpdir, bool Allfiles)
506 if (Allfiles && DeleteAllFilesInDir(tmpdir)) {
509 if (lyx::rmdir(tmpdir)) {
510 Alert::err_alert(_("Error! Couldn't delete temporary directory:"),
520 string const CreateBufferTmpDir(string const & pathfor)
523 static string const tmpdir(pathfor.empty() ? os::getTmpDir() : pathfor);
524 // We are in our own directory. Why bother to mangle name?
525 // In fact I wrote this code to circumvent a problematic behaviour (bug?)
527 string const tmpfl = tmpdir + "/lyx_tmpbuf" + tostr(count++);
528 if (lyx::mkdir(tmpfl, 0777)) {
529 Alert::err_alert(_("Error! Couldn't create temporary directory:"),
537 int DestroyBufferTmpDir(string const & tmpdir)
539 return DestroyTmpDir(tmpdir, true);
543 string const CreateLyXTmpDir(string const & deflt)
545 if ((!deflt.empty()) && (deflt != "/tmp")) {
546 if (lyx::mkdir(deflt, 0777)) {
550 return CreateTmpDir(deflt, "lyx_tmpdir");
557 return CreateTmpDir("/tmp", "lyx_tmpdir");
562 int DestroyLyXTmpDir(string const & tmpdir)
564 return DestroyTmpDir (tmpdir, false); // Why false?
568 // Creates directory. Returns true if succesfull
569 bool createDirectory(string const & path, int permission)
571 string temp(strip(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 ofs.str().c_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: Environmentvariables 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);
885 } // ReplaceEnvironmentPath
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...
1001 // PBM P1... or P4 (B/W)
1002 // PGM P2... or P5 (Grayscale)
1003 // PPM P3... or P6 (color)
1004 // PS %!PS-Adobe-2.0 or 1.0, no "EPSF"!
1005 // SGI \001\332... (decimal 474)
1007 // TIFF II... or MM...
1008 // XBM ..._bits[]...
1009 // XPM /* XPM */ sometimes missing (f.ex. tgif-export)
1010 // ...static char *...
1011 // XWD \000\000\000\151 (0x00006900) decimal 105
1013 // GZIP \037\213\010\010... http://www.ietf.org/rfc/rfc1952.txt
1014 // ZIP PK... http://www.halyava.ru/document/ind_arch.htm
1015 // Z \037\177 UNIX compress
1017 /// return the "extension" which belongs to the contents.
1018 /// for no knowing contents return the extension. Without
1019 /// an extension and unknown contents we return "user"
1020 string const getExtFromContents(string const & filename)
1023 if (filename.empty() || !IsFileReadable(filename))
1026 ifstream ifs(filename.c_str());
1028 // Couldn't open file...
1032 string const gzipStamp = "\037\213\010\010";
1035 string const zipStamp = "PK";
1038 string const compressStamp = "\037\177";
1040 // Maximum strings to read
1041 int const max_count = 50;
1045 bool firstLine = true;
1046 while ((count++ < max_count) && format.empty()) {
1048 lyxerr[Debug::GRAPHICS]
1049 << "filetools(getExtFromContents)\n"
1050 << "\tFile type not recognised before EOF!"
1057 lyxerr[Debug::GRAPHICS] << "Scanstring: " << str.substr(0,60)
1060 string const stamp = str.substr(0,2);
1061 if (firstLine && str.size() >= 2) {
1062 // at first we check for a zipped file, because this
1063 // information is saved in the first bytes of the file!
1064 // also some graphic formats which save the information
1065 // in the first line, too.
1066 if (prefixIs(str, gzipStamp)) {
1069 } else if (stamp == zipStamp) {
1072 } else if (stamp == compressStamp) {
1073 format = "compress";
1075 // the graphics part
1076 } else if (stamp == "BM") {
1079 } else if (stamp == "\001\332") {
1083 // Don't need to use str.at(0), str.at(1) because
1084 // we already know that str.size() >= 2
1085 } else if (str[0] == 'P') {
1101 } else if ((stamp == "II") || (stamp == "MM")) {
1104 } else if (prefixIs(str,"%TGIF")) {
1107 } else if (prefixIs(str,"GIF")) {
1110 } else if (str.size() > 3) {
1111 int const c = ((str[0] << 24) & (str[1] << 16) &
1112 (str[2] << 8) & str[3]);
1121 if (!format.empty())
1123 else if (contains(str,"EPSF"))
1124 // dummy, if we have wrong file description like
1125 // %!PS-Adobe-2.0EPSF"
1128 else if (contains(str,"Grace"))
1131 else if (contains(str,"JFIF"))
1134 else if (contains(str,"%PDF"))
1137 else if (contains(str,"PNG"))
1140 else if (contains(str,"%!PS-Adobe")) {
1143 if (contains(str,"EPSF"))
1149 else if (contains(str,"_bits[]"))
1152 else if (contains(str,"XPM") || contains(str, "static char *"))
1155 else if (contains(str,"BITPIX"))
1159 if (!format.empty()) {
1160 lyxerr[Debug::GRAPHICS]
1161 << "Recognised Fileformat: " << format << endl;
1165 string const ext(GetExtension(filename));
1166 lyxerr[Debug::GRAPHICS]
1167 << "filetools(getExtFromContents)\n"
1168 << "\tCouldn't find a known Type!\n";
1170 lyxerr[Debug::GRAPHICS]
1171 << "\twill take the file extension -> "
1175 lyxerr[Debug::GRAPHICS]
1176 << "\twill use ext or a \"user\" defined format" << endl;
1182 /// check for zipped file
1183 bool zippedFile(string const & name)
1185 string const type = getExtFromContents(name);
1186 if (contains("gzip zip compress", type) && !type.empty())
1192 string const unzipFile(string const & zipped_file)
1194 string const file = ChangeExtension(zipped_file, string());
1195 string const tempfile = lyx::tempName(string(), file);
1197 string const command = "gunzip -c " + zipped_file + " > " + tempfile;
1199 one.startscript(Systemcall::Wait, command);
1200 // test that command was executed successfully (anon)
1201 // yes, please do. (Lgb)
1206 // Creates a nice compact path for displaying
1208 MakeDisplayPath (string const & path, unsigned int threshold)
1210 string::size_type const l1 = path.length();
1212 // First, we try a relative path compared to home
1213 string const home(GetEnvPath("HOME"));
1214 string relhome = MakeRelPath(path, home);
1216 string::size_type l2 = relhome.length();
1220 // If we backup from home or don't have a relative path,
1221 // this try is no good
1222 if (prefixIs(relhome, "../") || os::is_absolute_path(relhome)) {
1223 // relative path was no good, just use the original path
1230 // Is the path too long?
1231 if (l2 > threshold) {
1237 while (relhome.length() > threshold)
1238 relhome = split(relhome, temp, '/');
1240 // Did we shortend everything away?
1241 if (relhome.empty()) {
1242 // Yes, filename in itself is too long.
1243 // Pick the start and the end of the filename.
1244 relhome = OnlyFilename(path);
1245 string const head = relhome.substr(0, threshold/2 - 3);
1247 l2 = relhome.length();
1249 relhome.substr(l2 - threshold/2 - 2, l2 - 1);
1250 relhome = head + "..." + tail;
1253 return prefix + relhome;
1257 bool LyXReadLink(string const & File, string & Link)
1259 char LinkBuffer[512];
1260 // Should be PATH_MAX but that needs autconf support
1261 int const nRead = ::readlink(File.c_str(),
1262 LinkBuffer, sizeof(LinkBuffer) - 1);
1265 LinkBuffer[nRead] = '\0'; // terminator
1273 typedef pair<int, string> cmdret;
1275 cmdret const do_popen(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::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);
1302 string const findtexfile(string const & fil, string const & /*format*/)
1304 /* There is no problem to extend this function too use other
1305 methods to look for files. It could be setup to look
1306 in environment paths and also if wanted as a last resort
1307 to a recursive find. One of the easier extensions would
1308 perhaps be to use the LyX file lookup methods. But! I am
1309 going to implement this until I see some demand for it.
1313 // If the file can be found directly, we just return a
1314 // absolute path version of it.
1315 if (FileInfo(fil).exist())
1316 return MakeAbsPath(fil);
1318 // No we try to find it using kpsewhich.
1319 // It seems from the kpsewhich manual page that it is safe to use
1320 // kpsewhich without --format: "When the --format option is not
1321 // given, the search path used when looking for a file is inferred
1322 // from the name given, by looking for a known extension. If no
1323 // known extension is found, the search path for TeX source files
1325 // However, we want to take advantage of the format sine almost all
1326 // the different formats has environment variables that can be used
1327 // to controll which paths to search. f.ex. bib looks in
1328 // BIBINPUTS and TEXBIB. Small list follows:
1329 // bib - BIBINPUTS, TEXBIB
1331 // graphic/figure - TEXPICTS, TEXINPUTS
1332 // ist - TEXINDEXSTYLE, INDEXSTYLE
1333 // pk - PROGRAMFONTS, PKFONTS, TEXPKS, GLYPHFONTS, TEXFONTS
1335 // tfm - TFMFONTS, TEXFONTS
1336 // This means that to use kpsewhich in the best possible way we
1337 // should help it by setting additional path in the approp. envir.var.
1338 string const kpsecmd = "kpsewhich " + fil;
1340 cmdret const c = do_popen(kpsecmd);
1342 lyxerr[Debug::LATEX] << "kpse status = " << c.first << "\n"
1343 << "kpse result = `" << strip(c.second, '\n')
1346 return os::internal_path(strip(strip(c.second, '\n'), '\r'));
1352 void removeAutosaveFile(string const & filename)
1354 string a = OnlyPath(filename);
1356 a += OnlyFilename(filename);
1358 FileInfo const fileinfo(a);
1359 if (fileinfo.exist()) {
1360 if (lyx::unlink(a) != 0) {
1361 Alert::err_alert(_("Could not delete auto-save file!"), a);
1367 string const readBB_from_PSFile(string const & file)
1369 // in a (e)ps-file it's an entry like %%BoundingBox:23 45 321 345
1370 // It seems that every command in the header has an own line,
1371 // getline() should work for all files.
1372 // On the other hand some plot programs write the bb at the
1373 // end of the file. Than we have in the header:
1374 // %%BoundingBox: (atend)
1375 // In this case we must check the end.
1376 string const file_ = zippedFile(file) ?
1377 string(unzipFile(file)) : string(file);
1378 string const format = getExtFromContents(file_);
1379 if (format != "eps" && format != "ps")
1382 std::ifstream is(file_.c_str());
1386 if (contains(s,"%%BoundingBox:") && !contains(s,"atend"))
1387 return (frontStrip(s.substr(14)));