// for retrieving files from archives and/or managing temporary files

 

 #ifndef OPENARCHIVE_HEADER

 #define OPENARCHIVE_HEADER

 

 #include "7zip.h"

 

 // ObtainFile()

 // this is the main, high-level function for opening possibly-compressed files.

 // you don't need to check whether the file is compressed beforehand,

 // this function will figure that out and work correctly either way.

 // it also does the work of bringing up a within-archive file selector dialog if necessary,

 // which even allows navigating to a file within an archive that's within the archive.

 // the output PhysicalName is the filename of an uncompressed file

 // for you to load with fopen or whatever,

 // unless the function fails (or is cancelled) in which case it will return false.

 // example input Name:          "C:\games.zip"

 // example output LogicalName:  "C:\games.zip|Metroid.gba"

 // example output PhysicalName: "C:\Documents and Settings\User\Local Settings\Temp\VBA\rom7A37.gba"

 // assumes the three name arguments are distinct character buffers with exactly 2048 bytes each

 bool ObtainFile(const char* Name, char *const & LogicalName, char *const & PhysicalName, const char* category=NULL, const char** ignoreExtensions=NULL, int numIgnoreExtensions=0);

 

 // ReleaseTempFileCategory()

 // this is for deleting the temporary files that ObtainFile() can create.

 // using it is optional because they will auto-delete on proper shutdown of the program,

 // but it's nice to be able to clean up the files as early as possible.

 // pass in the same "category" string you passed into ObtainFile(),

 // and this will delete all files of that category.

 // you can optionally specify one filename to not delete even if its category matches.

 // note that any still-open files cannot be deleted yet and will be skipped.

 void ReleaseTempFileCategory(const char* category, const char* exceptionFilename=NULL);

 

 // sets the parent window of subsequent archive selector dialogs

 // NULL resets this to the default (main VBA emulator window)

 void SetArchiveParentHWND(void* hwnd=NULL);

 

 // the rest of these are more internal utility functions,

 // but they could be generally useful outside of that

 const char* GetTempFile(const char* category=NULL, const char* extension=NULL); // creates a temp file and returns a path to it.  extension if any should include the '.'

 void ReleaseTempFile(const char* filename); // deletes a particular temporary file, by filename

 int ChooseItemFromArchive(ArchiveFile& archive, bool autoChooseIfOnly1=true, const char** ignoreExtensions=0, int numIgnoreExtensions=0); // gets an index to a file within an already-open archive, using the file chooser if there's more than one choice

 

 #endif