subsys/system/explorer/shell/winfs.cpp

   1 /*
   2  * Copyright 2003 Martin Fuchs
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  17  */
  18
  19
  20  //
  21  // Explorer clone
  22  //
  23  // winfs.cpp
  24  //
  25  // Martin Fuchs, 23.07.2003
  26  //
  27
  28
  29 #include "../utility/utility.h"
  30 #include "../utility/shellclasses.h"
  31
  32 #include "entries.h"
  33 #include "winfs.h"
  34
  35
  36 void WinDirectory::read_directory()
  37 {
  38         Entry* first_entry = NULL;
  39         Entry* last = NULL;
  40         Entry* entry;
  41
  42         int level = _level + 1;
  43
  44         LPCTSTR path = (LPCTSTR)_path;
  45         TCHAR buffer[MAX_PATH], *p;
  46         for(p=buffer; *path; )
  47                 *p++ = *path++;
  48
  49         lstrcpy(p, TEXT("\\*"));
  50
  51         WIN32_FIND_DATA w32fd;
  52         HANDLE hFind = FindFirstFile(buffer, &w32fd);
  53
  54         if (hFind != INVALID_HANDLE_VALUE) {
  55                 do {
  56                         lstrcpy(p+1, w32fd.cFileName);
  57
  58                         if (w32fd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
  59                                 entry = new WinDirectory(this, buffer);
  60                         else
  61                                 entry = new WinEntry(this);
  62
  63                         if (!first_entry)
  64                                 first_entry = entry;
  65
  66                         if (last)
  67                                 last->_next = entry;
  68
  69                         memcpy(&entry->_data, &w32fd, sizeof(WIN32_FIND_DATA));
  70                         entry->_down = NULL;
  71                         entry->_expanded = false;
  72                         entry->_scanned = false;
  73                         entry->_level = level;
  74                         entry->_bhfi_valid = false;
  75
  76                         HANDLE hFile = CreateFile(buffer, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE|FILE_SHARE_DELETE,
  77                                                                                 0, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0);
  78
  79                         if (hFile != INVALID_HANDLE_VALUE) {
  80                                 if (GetFileInformationByHandle(hFile, &entry->_bhfi))
  81                                         entry->_bhfi_valid = true;
  82
  83                                 CloseHandle(hFile);
  84                         }
  85
  86                         last = entry;
  87                 } while(FindNextFile(hFind, &w32fd));
  88
  89                 last->_next = NULL;
  90
  91                 FindClose(hFind);
  92         }
  93
  94         _down = first_entry;
  95         _scanned = true;
  96 }
  97
  98
  99 const void* WinDirectory::get_next_path_component(const void* p)
 100 {
 101         LPCTSTR s = (LPCTSTR) p;
 102
 103         while(*s && *s!=TEXT('\\') && *s!=TEXT('/'))
 104                 ++s;
 105
 106         while(*s==TEXT('\\') || *s==TEXT('/'))
 107                 ++s;
 108
 109         if (!*s)
 110                 return NULL;
 111
 112         return s;
 113 }
 114
 115
 116 Entry* WinDirectory::find_entry(const void* p)
 117 {
 118         LPCTSTR name = (LPCTSTR)p;
 119
 120         for(Entry*entry=_down; entry; entry=entry->_next) {
 121                 LPCTSTR p = name;
 122                 LPCTSTR q = entry->_data.cFileName;
 123
 124                 do {
 125                         if (!*p || *p==TEXT('\\') || *p==TEXT('/'))
 126                                 return entry;
 127                 } while(tolower(*p++) == tolower(*q++));
 128
 129                 p = name;
 130                 q = entry->_data.cAlternateFileName;
 131
 132                 do {
 133                         if (!*p || *p==TEXT('\\') || *p==TEXT('/'))
 134                                 return entry;
 135                 } while(tolower(*p++) == tolower(*q++));
 136         }
 137
 138         return NULL;
 139 }
 140
 141
 142  // get full path of specified directory entry
 143 void WinEntry::get_path(PTSTR path) const
 144 {
 145         int level = 0;
 146         int len = 0;
 147
 148         for(const Entry* entry=this; entry; level++) {
 149                 LPCTSTR name = entry->_data.cFileName;
 150                 int l = 0;
 151
 152                 for(LPCTSTR s=name; *s && *s!=TEXT('/') && *s!=TEXT('\\'); s++)
 153                         ++l;
 154
 155                 if (entry->_up) {
 156                         if (l > 0) {
 157                                 memmove(path+l+1, path, len*sizeof(TCHAR));
 158                                 memcpy(path+1, name, l*sizeof(TCHAR));
 159                                 len += l+1;
 160
 161                                 path[0] = TEXT('\\');
 162                         }
 163
 164                         entry = entry->_up;
 165                 } else {
 166                         memmove(path+l, path, len*sizeof(TCHAR));
 167                         memcpy(path, name, l*sizeof(TCHAR));
 168                         len += l;
 169                         break;
 170                 }
 171         }
 172
 173         if (!level)
 174                 path[len++] = TEXT('\\');
 175
 176         path[len] = TEXT('\0');
 177 }