X-Git-Url: https://git.verplant.org/?a=blobdiff_plain;f=src%2Ffile_system.cpp;h=447c21e2c1c3e9e5a403574fac0bb723a6fe3e32;hb=4f423b9bbb6fa694b8c6bcc338e069aad45db3e3;hp=4989540c4b6f3dd6f8f44884127e920607f90ed6;hpb=5b7f9214cb929399f1a855ef5807018a9447d510;p=supertux.git

diff --git a/src/file_system.cpp b/src/file_system.cpp
index 4989540c4..447c21e2c 100644
--- a/src/file_system.cpp
+++ b/src/file_system.cpp
@@ -1,8 +1,30 @@
+//  $Id$
+//
+//  SuperTux
+//  Copyright (C) 2006 Matthias Braun <matze@braunis.de>
+//
+//  This program 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 2
+//  of the License, or (at your option) any later version.
+//
+//  This program 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 this program; if not, write to the Free Software
+//  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+
 #include <config.h>
 
+#include "log.hpp"
 #include "file_system.hpp"
 
 #include <string>
+#include <vector>
+#include <sstream>
 
 namespace FileSystem
 {
@@ -10,9 +32,9 @@ namespace FileSystem
 std::string dirname(const std::string& filename)
 {
   std::string::size_type p = filename.find_last_of('/');
-  if(p == std::string::npos)                              
+  if(p == std::string::npos)
     return "";
-  
+
   return filename.substr(0, p+1);
 }
 
@@ -22,8 +44,67 @@ std::string basename(const std::string& filename)
   if(p == std::string::npos)
     return filename;
 
-  return filename.substr(p, filename.size()-p);
+  return filename.substr(p+1, filename.size()-p-1);
+}
+
+std::string strip_extension(const std::string& filename)
+{
+  std::string::size_type p = filename.find_last_of('.');
+  if(p == std::string::npos)
+    return filename;
+
+  return filename.substr(0, p);
 }
 
+std::string normalize(const std::string& filename)
+{
+  std::vector<std::string> path_stack;
+
+  const char* p = filename.c_str();
+
+  while(true) {
+    while(*p == '/') {
+      p++;
+      continue;
+    }
+
+    const char* pstart = p;
+    while(*p != '/' && *p != 0) {
+      ++p;
+    }
+
+    size_t len = p - pstart;
+    if(len == 0)
+      break;
+
+    std::string pathelem(pstart, p-pstart);
+    if(pathelem == ".")
+      continue;
+
+    if(pathelem == "..") {
+      if(path_stack.empty()) {
+
+        log_warning << "Invalid '..' in path '" << filename << "'" << std::endl;
+        // push it into the result path so that the user sees his error...
+        path_stack.push_back(pathelem);
+      } else {
+        path_stack.pop_back();
+      }
+    } else {
+      path_stack.push_back(pathelem);
+    }
+  }
+
+  // construct path
+  std::ostringstream result;
+  for(std::vector<std::string>::iterator i = path_stack.begin();
+      i != path_stack.end(); ++i) {
+    result << '/' << *i;
+  }
+  if(path_stack.empty())
+    result << '/';
+
+  return result.str();
 }
 
+}