X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=flower%2Ffile-name.cc;h=eaadadf3efc071f34ac0610d7cc5db3ef55beded;hb=47db9a3883d726ca53e2133a3b2298f78dd6a32e;hp=21fec4e4b1a8a8a5a054edef2f32ae3175a9c566;hpb=5383cafcc75ae088f833df0081e2b2a73a5442a1;p=lilypond.git

diff --git a/flower/file-name.cc b/flower/file-name.cc
index 21fec4e4b1..eaadadf3ef 100644
--- a/flower/file-name.cc
+++ b/flower/file-name.cc
@@ -1,10 +1,21 @@
 /*
-  file-name.cc - implement File_name
+  This file is part of LilyPond, the GNU music typesetter.
 
-  source file of the Flower Library
-
-  (c) 1997--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
+  Copyright (C) 1997--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
   Jan Nieuwenhuizen <janneke@gnu.org>
+
+  LilyPond is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  LilyPond is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with LilyPond.  If not, see <http://www.gnu.org/licenses/>.
 */
 
 #include "file-name.hh"
@@ -12,6 +23,7 @@
 #include <cstdio>
 #include <cerrno>
 #include <unistd.h>
+#include <limits.h>
 
 using namespace std;
 
@@ -39,7 +51,7 @@ using namespace std;
 
 #ifdef __CYGWIN__
 static string
-dos_to_posix (string file_name)
+dos_to_posix (const string &file_name)
 {
   char buf[PATH_MAX] = "";
   char s[PATH_MAX] = {0};
@@ -56,17 +68,17 @@ dos_to_posix (string file_name)
     much be exchanged.  */
 #if 0
 static /* avoid warning */
-#endif 
+#endif
 string
 slashify (string file_name)
 {
-  replace_all (file_name, '\\', '/');
-  replace_all (file_name, string ("//"), "/");
+  replace_all (&file_name, '\\', '/');
+  replace_all (&file_name, string ("//"), "/");
   return file_name;
 }
 
 string
-dir_name (string const file_name)
+dir_name (const string &file_name)
 {
   string s = file_name;
   s = slashify (s);
@@ -77,7 +89,7 @@ dir_name (string const file_name)
     s = s.substr (0, s.rfind ('/'));
   else
     s = "";
-  
+
   return s;
 }
 
@@ -85,9 +97,8 @@ string
 get_working_directory ()
 {
   char cwd[PATH_MAX];
-  getcwd (cwd, PATH_MAX);
-
-  return string (cwd);
+  // getcwd returns NULL upon a failure, contents of cwd would be undefined!
+  return string (getcwd (cwd, PATH_MAX));
 }
 
 /* Join components to full file_name. */
@@ -106,7 +117,6 @@ File_name::dir_part () const
   return s;
 }
 
-
 string
 File_name::file_part () const
 {
@@ -124,7 +134,7 @@ File_name::to_string () const
   string f = file_part ();
 
   if (!f.empty ()
-      && !dir_.empty())
+      && !dir_.empty ())
     {
       d += ::to_string (DIRSEP);
     }
@@ -172,8 +182,29 @@ bool
 File_name::is_absolute () const
 {
   /*
-    Hmm. Is c:foo absolute?  
+    Hmm. Is c:foo absolute?
    */
   return (dir_.length () && dir_[0] == DIRSEP) || root_.length ();
 }
 
+File_name
+File_name::canonicalized () const
+{
+  File_name c = *this;
+
+  replace_all (&c.dir_, string ("//"), string ("/"));
+
+  vector<string> components = string_split (c.dir_, '/');
+  vector<string> new_components;
+
+  for (vsize i = 0; i < components.size (); i++)
+    {
+      if (components[i] == "..")
+        new_components.pop_back ();
+      else
+        new_components.push_back (components[i]);
+    }
+
+  c.dir_ = string_join (new_components, "/");
+  return c;
+}