// Load
//
// If there is an error, it will be of type *Error.
func (mgc *Magic) Load(files ...string) (bool, error) {
mgc.Lock()
defer mgc.Unlock()
runtime.KeepAlive(mgc.magic)
if mgc.cookie == nil {
return false, mgc.error()
}
var cfiles *C.char
runtime.KeepAlive(cfiles)
defer C.free(unsafe.Pointer(cfiles))
// Assemble the list of custom Magic files into a colon-separated
// list that is required by the underlying Magic library, otherwise
// defer to the default list of paths provided by the Magic library.
if len(files) > 0 {
cfiles = C.CString(strings.Join(files, ":"))
} else {
cfiles = C.magic_getpath_wrapper()
}
if rv := C.magic_load_wrapper(mgc.cookie, cfiles, C.int(mgc.flags)); rv < 0 {
return false, mgc.error()
}
mgc.path = strings.Split(C.GoString(cfiles), ":")
return true, nil
}
// Path returns a slice containing fully-qualified path for each
// of Magic database files that was loaded and is currently in use.
// If there is an error, it will be of type *Error.
//
// Optionally, if the "MAGIC" environment variable is present,
// then each path from it will be taken into the account and the
// value that this function returns will be updated accordingly.
func (mgc *Magic) Path() ([]string, error) {
mgc.Lock()
defer mgc.Unlock()
runtime.KeepAlive(mgc.magic)
if mgc.cookie == nil {
return []string{}, mgc.error()
}
// Respect the "MAGIC" environment variable, if present.
if len(mgc.path) > 0 && os.Getenv("MAGIC") == "" {
return mgc.path, nil
}
rv := C.GoString(C.magic_getpath_wrapper())
mgc.path = strings.Split(rv, ":")
return mgc.path, nil
}
