0ad/source/lib/file/dir_util.h
janwas 75ab906315 WIP file code, getting pretty close to functional
archive: ArchiveEntry now a mememto and not exposed directly
typedefs for boost::shared_ptr
fixed up dir_util to new interface
add "FileProvider" that does Load/Store and indicates Precedence

vfs: structure has changed. one RealDirectory per OS dir; vfs_tree
stores it; populate uses it to Add() stuff to vfs_tree; lookup does path
traversal and calls populate

This was SVN commit r5499.
2007-12-01 18:32:43 +00:00

68 lines
2.3 KiB
C

/**
* =========================================================================
* File : dir_util.h
* Project : 0 A.D.
* Description : helper functions for directory access
* =========================================================================
*/
// license: GPL; see lib/license.txt
#ifndef INCLUDED_DIR_UTIL
#define INCLUDED_DIR_UTIL
#include "filesystem.h"
extern bool dir_FileExists(IFilesystem* fs, const char* pathname);
extern void dir_SortFiles(FileInfos& files);
extern void dir_SortDirectories(Directories& directories);
/**
* called for files in a directory.
*
* @param pathname full pathname (since FileInfo only gives the name).
* @param fileInfo file information
* @param cbData user-specified context
* @return INFO::CB_CONTINUE on success; any other value will immediately
* be returned to the caller (no more calls will be forthcoming).
*
* CAVEAT: pathname and fileInfo are only valid until the function
* returns!
**/
typedef LibError (*DirCallback)(const char* pathname, const FileInfo& fileInfo, const uintptr_t cbData);
enum DirFlags
{
/// include files in subdirectories.
VFS_DIR_RECURSIVE = 1
};
/**
* call back for each file in a directory (tree)
*
* @param cb see DirCallback
* @param pattern that file names must match. '*' and '&' wildcards
* are allowed. 0 matches everything.
* @param flags see DirFlags
* @param LibError
**/
extern LibError dir_ForEachFile(IFilesystem* fs, const char* path, DirCallback cb, uintptr_t cbData, const char* pattern = 0, uint flags = 0);
/**
* determine the next available pathname with a given format.
* this is useful when creating new files without overwriting the previous
* ones (screenshots are a good example).
*
* @param pathnameFmt format string for the pathname; must contain one
* format specifier for an (unsigned) int.
* example: "screenshots/screenshot%04d.png"
* @param nextNumber in: the first number to try; out: the next number.
* if 0, numbers corresponding to existing files are skipped.
* @param receives the output; must hold at least PATH_MAX characters.
**/
extern void dir_NextNumberedFilename(IFilesystem* fs, const char* pathnameFmt, unsigned& nextNumber, char* nextPathname);
#endif // #ifndef INCLUDED_DIR_UTIL