0ad/source/lib/file/path.h
janwas 317f98a6c0 WIP of new file code
archive: pretty much done except for trace and archive_builder
IO: io_manager still needs to be fixed/revised (especially WRT buffer
and alignment management)
posix: done
vfs: need to complete vfs_mount and tie it in to vfs.cpp
dir_util: needs further revisions (VFS interface changed since then)

This was SVN commit r5475.
2007-11-20 18:51:07 +00:00

70 lines
2.2 KiB
C++

/**
* =========================================================================
* File : path.h
* Project : 0 A.D.
* Description : manage paths relative to a root directory
* =========================================================================
*/
// license: GPL; see lib/license.txt
// path types:
// tag type type separator
// portable relative /
// os native absolute SYS_DIR_SEP
// vfs vfs absolute /
// the vfs root directory is "". no ':', '\\', "." or ".." are allowed.
#ifndef INCLUDED_PATH
#define INCLUDED_PATH
namespace ERR
{
const LibError PATH_ROOT_DIR_ALREADY_SET = -110200;
const LibError PATH_NOT_IN_ROOT_DIR = -110201;
}
/**
* establish the root OS directory (portable paths are relative to it)
*
* @param argv0 the value of argv[0] (used to determine the location
* of the executable in case sys_get_executable_path fails). note that
* the current directory cannot be used because it's not set when
* starting via batch file.
* @param rel_path root directory relative to the executable's directory.
* the value is considered trusted since it will typically be hard-coded.
*
* example: executable in "$install_dir/system"; desired root dir is
* "$install_dir/data" => rel_path = "../data".
*
* can only be called once unless path_ResetRootDir is called.
**/
extern LibError path_SetRoot(const char* argv0, const char* rel_path);
/**
* reset root directory that was previously established via path_SetRoot.
*
* this function avoids the security complaint that would be raised if
* path_SetRoot is called twice; it is provided for the
* legitimate application of a self-test setUp()/tearDown().
**/
extern void path_ResetRootDir();
/**
* return the absolute OS path for a given relative portable path.
*
* this is useful for external libraries that require the real filename.
**/
extern void path_MakeAbsolute(const char* path, char* osPath);
/**
* return the relative portable path for a given absolute OS path.
*
* this is useful when receiving paths from external libraries (e.g. FAM).
**/
extern void path_MakeRelative(const char* osPath, char* path);
#endif // #ifndef INCLUDED_PATH