// Load creates a Siegfried struct and loads content from path
func Load(path string) (*Siegfried, error) {
errOpening := "siegfried: error opening signature file, got %v; try running `sf -update`"
errNotSig := "siegfried: not a siegfried signature file; try running `sf -update`"
errUpdateSig := "siegfried: signature file is incompatible with this version of sf; try running `sf -update`"
fbuf, err := ioutil.ReadFile(path)
if err != nil {
return nil, fmt.Errorf(errOpening, err)
}
if len(fbuf) < len(config.Magic())+2 {
return nil, fmt.Errorf(errNotSig)
}
if string(fbuf[:len(config.Magic())]) != string(config.Magic()) {
return nil, fmt.Errorf(errNotSig)
}
if major, minor := fbuf[len(config.Magic())], fbuf[len(config.Magic())+1]; major < byte(config.Version()[0]) || (major == byte(config.Version()[0]) && minor < byte(config.Version()[1])) {
return nil, fmt.Errorf(errUpdateSig)
}
r := bytes.NewBuffer(fbuf[len(config.Magic())+2:])
rc := flate.NewReader(r)
defer rc.Close()
buf, err := ioutil.ReadAll(rc)
if err != nil {
return nil, fmt.Errorf(errOpening, err)
}
ls := persist.NewLoadSaver(buf)
return &Siegfried{
path: filepath.Base(path),
C: ls.LoadTime(),
nm: namematcher.Load(ls),
mm: mimematcher.Load(ls),
cm: containermatcher.Load(ls),
xm: xmlmatcher.Load(ls),
rm: riffmatcher.Load(ls),
bm: bytematcher.Load(ls),
tm: textmatcher.Load(ls),
ids: func() []core.Identifier {
ids := make([]core.Identifier, ls.LoadTinyUInt())
for i := range ids {
ids[i] = core.LoadIdentifier(ls)
}
return ids
}(),
buffers: siegreader.New(),
}, ls.Err
}
// Load creates a Siegfried struct and loads content from path
func Load(path string) (*Siegfried, error) {
errOpening := "siegfried: error opening signature file; got %v\nTry running `sf -update`"
errNotSig := "siegfried: not a siegfried signature file"
fbuf, err := ioutil.ReadFile(path)
if err != nil {
return nil, fmt.Errorf(errOpening, err)
}
if string(fbuf[:len(config.Magic())]) != string(config.Magic()) {
return nil, fmt.Errorf(errNotSig)
}
r := bytes.NewBuffer(fbuf[len(config.Magic()):])
rc := flate.NewReader(r)
defer rc.Close()
buf, err := ioutil.ReadAll(rc)
if err != nil {
return nil, fmt.Errorf(errOpening, err)
}
ls := persist.NewLoadSaver(buf)
if ls.LoadString() != "siegfried" {
return nil, fmt.Errorf(errNotSig)
}
return &Siegfried{
C: ls.LoadTime(),
em: extensionmatcher.Load(ls),
cm: containermatcher.Load(ls),
bm: bytematcher.Load(ls),
tm: textmatcher.Load(ls),
ids: func() []core.Identifier {
ids := make([]core.Identifier, ls.LoadTinyUInt())
for i := range ids {
ids[i] = core.LoadIdentifier(ls)
}
return ids
}(),
buffers: siegreader.New(),
}, ls.Err
}