Core/Loaders.h

   1 // Copyright (c) 2012- PPSSPP Project.
   2
   3 // This program is free software: you can redistribute it and/or modify
   4 // it under the terms of the GNU General Public License as published by
   5 // the Free Software Foundation, version 2.0 or later versions.
   6
   7 // This program is distributed in the hope that it will be useful,
   8 // but WITHOUT ANY WARRANTY; without even the implied warranty of
   9 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  10 // GNU General Public License 2.0 for more details.
  11
  12 // A copy of the GPL 2.0 should have been included with the program.
  13 // If not, see http://www.gnu.org/licenses/
  14
  15 // Official git repository and contact information can be found at
  16 // https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
  17
  18 #pragma once
  19
  20 #include <string>
  21
  22 enum IdentifiedFileType {
  23         FILETYPE_ERROR,
  24
  25         FILETYPE_PSP_PBP_DIRECTORY,
  26
  27         FILETYPE_PSP_PBP,
  28         FILETYPE_PSP_ELF,
  29         FILETYPE_PSP_ISO,
  30         FILETYPE_PSP_ISO_NP,
  31
  32         FILETYPE_PSP_DISC_DIRECTORY,
  33
  34         FILETYPE_UNKNOWN_BIN,
  35         FILETYPE_UNKNOWN_ELF,
  36
  37         // Try to reduce support emails...
  38         FILETYPE_ARCHIVE_RAR,
  39         FILETYPE_ARCHIVE_ZIP,
  40         FILETYPE_ARCHIVE_7Z,
  41         FILETYPE_PSP_PS1_PBP,
  42         FILETYPE_ISO_MODE2,
  43
  44         FILETYPE_NORMAL_DIRECTORY,
  45
  46         FILETYPE_PSP_SAVEDATA_DIRECTORY,
  47         FILETYPE_PPSSPP_SAVESTATE,
  48
  49         FILETYPE_UNKNOWN
  50 };
  51
  52 class FileLoader {
  53 public:
  54         virtual ~FileLoader() {}
  55
  56         virtual bool Exists() = 0;
  57         virtual bool IsDirectory() = 0;
  58         virtual s64 FileSize() = 0;
  59         virtual std::string Path() const = 0;
  60         virtual std::string Extension() {
  61                 const std::string filename = Path();
  62                 size_t pos = filename.find_last_of('.');
  63                 if (pos == filename.npos) {
  64                         return "";
  65                 } else {
  66                         return filename.substr(pos);
  67                 }
  68         }
  69
  70         virtual void Seek(s64 absolutePos) = 0;
  71         virtual size_t Read(size_t bytes, size_t count, void *data) = 0;
  72         virtual size_t Read(size_t bytes, void *data) {
  73                 return Read(1, bytes, data);
  74         }
  75         virtual size_t ReadAt(s64 absolutePos, size_t bytes, size_t count, void *data) = 0;
  76         virtual size_t ReadAt(s64 absolutePos, size_t bytes, void *data) {
  77                 return ReadAt(absolutePos, 1, bytes, data);
  78         }
  79 };
  80
  81 FileLoader *ConstructFileLoader(const std::string &filename);
  82
  83 // This can modify the string, for example for stripping off the "/EBOOT.PBP"
  84 // for a FILETYPE_PSP_PBP_DIRECTORY.
  85 IdentifiedFileType Identify_File(FileLoader *fileLoader);
  86
  87 // Can modify the string filename, as it calls IdentifyFile above.
  88 bool LoadFile(FileLoader **fileLoaderPtr, std::string *error_string);