]> git.lizzy.rs Git - minetest.git/blobdiff - src/filesys.cpp
Generalize hud_builtin_enable into hud_set_flags
[minetest.git] / src / filesys.cpp
index 8aa10ba585408730bacc72e53e7cae96dd1dad88..256c8f16a6dea94a29c9bd3e437fa5686c1bd4fa 100644 (file)
@@ -1,18 +1,18 @@
 /*
-Minetest-c55
-Copyright (C) 2010 celeron55, Perttu Ahola <celeron55@gmail.com>
+Minetest
+Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
 
 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
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 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.
+GNU Lesser General Public License for more details.
 
-You should have received a copy of the GNU General Public License along
+You should have received a copy of the GNU Lesser General Public License along
 with this program; if not, write to the Free Software Foundation, Inc.,
 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
@@ -21,6 +21,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "strfnd.h"
 #include <iostream>
 #include <string.h>
+#include "log.h"
 
 namespace fs
 {
@@ -51,7 +52,7 @@ std::vector<DirListNode> GetDirListing(std::string pathstring)
 
        if( DirSpec == NULL )
        {
-         printf( "Insufficient memory available\n" );
+         errorstream<<"GetDirListing: Insufficient memory available"<<std::endl;
          retval = 1;
          goto Cleanup;
        }
@@ -59,7 +60,7 @@ std::vector<DirListNode> GetDirListing(std::string pathstring)
        // Check that the input is not larger than allowed.
        if (pathstring.size() > (BUFSIZE - 2))
        {
-         _tprintf(TEXT("Input directory is too large.\n"));
+         errorstream<<"GetDirListing: Input directory is too large."<<std::endl;
          retval = 3;
          goto Cleanup;
        }
@@ -73,9 +74,8 @@ std::vector<DirListNode> GetDirListing(std::string pathstring)
 
        if (hFind == INVALID_HANDLE_VALUE) 
        {
-         _tprintf (TEXT("Invalid file handle. Error is %u.\n"), 
-                               GetLastError());
-         retval = (-1);
+               retval = (-1);
+               goto Cleanup;
        } 
        else 
        {
@@ -103,10 +103,10 @@ std::vector<DirListNode> GetDirListing(std::string pathstring)
                FindClose(hFind);
                if (dwError != ERROR_NO_MORE_FILES) 
                {
-                _tprintf (TEXT("FindNextFile error. Error is %u.\n"), 
-                                  dwError);
-               retval = (-1);
-               goto Cleanup;
+                       errorstream<<"GetDirListing: FindNextFile error. Error is "
+                                       <<dwError<<std::endl;
+                       retval = (-1);
+                       goto Cleanup;
                }
        }
        retval  = 0;
@@ -117,7 +117,7 @@ std::vector<DirListNode> GetDirListing(std::string pathstring)
        if(retval != 0) listing.clear();
 
        //for(unsigned int i=0; i<listing.size(); i++){
-       //      std::cout<<listing[i].name<<(listing[i].dir?" (dir)":" (file)")<<std::endl;
+       //      infostream<<listing[i].name<<(listing[i].dir?" (dir)":" (file)")<<std::endl;
        //}
        
        return listing;
@@ -138,32 +138,75 @@ bool PathExists(std::string path)
        return (GetFileAttributes(path.c_str()) != INVALID_FILE_ATTRIBUTES);
 }
 
-bool RecursiveDelete(std::string path)
+bool IsDir(std::string path)
 {
-       std::cerr<<"Removing \""<<path<<"\""<<std::endl;
-
-       //return false;
-       
-       // This silly function needs a double-null terminated string...
-       // Well, we'll just make sure it has at least two, then.
-       path += "\0\0";
-
-       SHFILEOPSTRUCT sfo;
-       sfo.hwnd = NULL;
-       sfo.wFunc = FO_DELETE;
-       sfo.pFrom = path.c_str();
-       sfo.pTo = NULL;
-       sfo.fFlags = FOF_SILENT | FOF_NOCONFIRMATION | FOF_NOCONFIRMMKDIR;
-       
-       int r = SHFileOperation(&sfo);
+       DWORD attr = GetFileAttributes(path.c_str());
+       return (attr != INVALID_FILE_ATTRIBUTES &&
+                       (attr & FILE_ATTRIBUTE_DIRECTORY));
+}
 
-       if(r != 0)
-               std::cerr<<"SHFileOperation returned "<<r<<std::endl;
+bool RecursiveDelete(std::string path)
+{
+       infostream<<"Recursively deleting \""<<path<<"\""<<std::endl;
 
-       //return (r == 0);
+       DWORD attr = GetFileAttributes(path.c_str());
+       bool is_directory = (attr != INVALID_FILE_ATTRIBUTES &&
+                       (attr & FILE_ATTRIBUTE_DIRECTORY));
+       if(!is_directory)
+       {
+               infostream<<"RecursiveDelete: Deleting file "<<path<<std::endl;
+               //bool did = DeleteFile(path.c_str());
+               bool did = true;
+               if(!did){
+                       errorstream<<"RecursiveDelete: Failed to delete file "
+                                       <<path<<std::endl;
+                       return false;
+               }
+       }
+       else
+       {
+               infostream<<"RecursiveDelete: Deleting content of directory "
+                               <<path<<std::endl;
+               std::vector<DirListNode> content = GetDirListing(path);
+               for(int i=0; i<content.size(); i++){
+                       const DirListNode &n = content[i];
+                       std::string fullpath = path + DIR_DELIM + n.name;
+                       bool did = RecursiveDelete(fullpath);
+                       if(!did){
+                               errorstream<<"RecursiveDelete: Failed to recurse to "
+                                               <<fullpath<<std::endl;
+                               return false;
+                       }
+               }
+               infostream<<"RecursiveDelete: Deleting directory "<<path<<std::endl;
+               //bool did = RemoveDirectory(path.c_str();
+               bool did = true;
+               if(!did){
+                       errorstream<<"Failed to recursively delete directory "
+                                       <<path<<std::endl;
+                       return false;
+               }
+       }
        return true;
 }
 
+bool DeleteSingleFileOrEmptyDirectory(std::string path)
+{
+       DWORD attr = GetFileAttributes(path.c_str());
+       bool is_directory = (attr != INVALID_FILE_ATTRIBUTES &&
+                       (attr & FILE_ATTRIBUTE_DIRECTORY));
+       if(!is_directory)
+       {
+               bool did = DeleteFile(path.c_str());
+               return did;
+       }
+       else
+       {
+               bool did = RemoveDirectory(path.c_str());
+               return did;
+       }
+}
+
 #else // POSIX
 
 #include <sys/types.h>
@@ -171,6 +214,7 @@ bool RecursiveDelete(std::string path)
 #include <errno.h>
 #include <sys/stat.h>
 #include <sys/wait.h>
+#include <unistd.h>
 
 std::vector<DirListNode> GetDirListing(std::string pathstring)
 {
@@ -179,7 +223,7 @@ std::vector<DirListNode> GetDirListing(std::string pathstring)
     DIR *dp;
     struct dirent *dirp;
     if((dp  = opendir(pathstring.c_str())) == NULL) {
-               //std::cout<<"Error("<<errno<<") opening "<<pathstring<<std::endl;
+               //infostream<<"Error("<<errno<<") opening "<<pathstring<<std::endl;
         return listing;
     }
 
@@ -190,10 +234,36 @@ std::vector<DirListNode> GetDirListing(std::string pathstring)
                if(dirp->d_name[0]!='.'){
                        DirListNode node;
                        node.name = dirp->d_name;
-                       if(dirp->d_type == DT_DIR) node.dir = true;
-                       else node.dir = false;
-                       if(node.name != "." && node.name != "..")
-                               listing.push_back(node);
+                       if(node.name == "." || node.name == "..")
+                               continue;
+
+                       int isdir = -1; // -1 means unknown
+
+                       /*
+                               POSIX doesn't define d_type member of struct dirent and
+                               certain filesystems on glibc/Linux will only return
+                               DT_UNKNOWN for the d_type member.
+
+                               Also we don't know whether symlinks are directories or not.
+                       */
+#ifdef _DIRENT_HAVE_D_TYPE
+                       if(dirp->d_type != DT_UNKNOWN && dirp->d_type != DT_LNK)
+                               isdir = (dirp->d_type == DT_DIR);
+#endif /* _DIRENT_HAVE_D_TYPE */
+
+                       /*
+                               Was d_type DT_UNKNOWN, DT_LNK or nonexistent?
+                               If so, try stat().
+                       */
+                       if(isdir == -1)
+                       {
+                               struct stat statbuf;
+                               if (stat((pathstring + "/" + node.name).c_str(), &statbuf))
+                                       continue;
+                               isdir = ((statbuf.st_mode & S_IFDIR) == S_IFDIR);
+                       }
+                       node.dir = isdir;
+                       listing.push_back(node);
                }
     }
     closedir(dp);
@@ -223,13 +293,21 @@ bool PathExists(std::string path)
        return (stat(path.c_str(),&st) == 0);
 }
 
+bool IsDir(std::string path)
+{
+       struct stat statbuf;
+       if(stat(path.c_str(), &statbuf))
+               return false; // Actually error; but certainly not a directory
+       return ((statbuf.st_mode & S_IFDIR) == S_IFDIR);
+}
+
 bool RecursiveDelete(std::string path)
 {
        /*
                Execute the 'rm' command directly, by fork() and execve()
        */
        
-       std::cerr<<"Removing \""<<path<<"\""<<std::endl;
+       infostream<<"Removing \""<<path<<"\""<<std::endl;
 
        //return false;
        
@@ -248,7 +326,7 @@ bool RecursiveDelete(std::string path)
                argv[2] = argv_data[2];
                argv[3] = NULL;
 
-               std::cerr<<"Executing '"<<argv[0]<<"' '"<<argv[1]<<"' '"
+               verbosestream<<"Executing '"<<argv[0]<<"' '"<<argv[1]<<"' '"
                                <<argv[2]<<"'"<<std::endl;
                
                execv(argv[0], argv);
@@ -269,21 +347,64 @@ bool RecursiveDelete(std::string path)
        }
 }
 
+bool DeleteSingleFileOrEmptyDirectory(std::string path)
+{
+       if(IsDir(path)){
+               bool did = (rmdir(path.c_str()) == 0);
+               if(!did)
+                       errorstream<<"rmdir errno: "<<errno<<": "<<strerror(errno)
+                                       <<std::endl;
+               return did;
+       } else {
+               bool did = (unlink(path.c_str()) == 0);
+               if(!did)
+                       errorstream<<"unlink errno: "<<errno<<": "<<strerror(errno)
+                                       <<std::endl;
+               return did;
+       }
+}
+
 #endif
 
+void GetRecursiveSubPaths(std::string path, std::vector<std::string> &dst)
+{
+       std::vector<DirListNode> content = GetDirListing(path);
+       for(unsigned int  i=0; i<content.size(); i++){
+               const DirListNode &n = content[i];
+               std::string fullpath = path + DIR_DELIM + n.name;
+               dst.push_back(fullpath);
+               GetRecursiveSubPaths(fullpath, dst);
+       }
+}
+
+bool DeletePaths(const std::vector<std::string> &paths)
+{
+       bool success = true;
+       // Go backwards to succesfully delete the output of GetRecursiveSubPaths
+       for(int i=paths.size()-1; i>=0; i--){
+               const std::string &path = paths[i];
+               bool did = DeleteSingleFileOrEmptyDirectory(path);
+               if(!did){
+                       errorstream<<"Failed to delete "<<path<<std::endl;
+                       success = false;
+               }
+       }
+       return success;
+}
+
 bool RecursiveDeleteContent(std::string path)
 {
-       std::cerr<<"Removing content of \""<<path<<"\""<<std::endl;
+       infostream<<"Removing content of \""<<path<<"\""<<std::endl;
        std::vector<DirListNode> list = GetDirListing(path);
        for(unsigned int i=0; i<list.size(); i++)
        {
                if(trim(list[i].name) == "." || trim(list[i].name) == "..")
                        continue;
-               std::string childpath = path + "/" + list[i].name;
+               std::string childpath = path + DIR_DELIM + list[i].name;
                bool r = RecursiveDelete(childpath);
                if(r == false)
                {
-                       std::cerr<<"Removing \""<<childpath<<"\" failed"<<std::endl;
+                       errorstream<<"Removing \""<<childpath<<"\" failed"<<std::endl;
                        return false;
                }
        }
@@ -299,13 +420,14 @@ bool CreateAllDirs(std::string path)
        while(!PathExists(basepath))
        {
                tocreate.push_back(basepath);
-               pos = basepath.rfind('/');
+               pos = basepath.rfind(DIR_DELIM_C);
                if(pos == std::string::npos)
-                       return false;
+                       break;
                basepath = basepath.substr(0,pos);
        }
        for(int i=tocreate.size()-1;i>=0;i--)
-               CreateDir(tocreate[i]);
+               if(!CreateDir(tocreate[i]))
+                       return false;
        return true;
 }