func Discover() ([]DiscoverInfo, error) {
var devs []string
s1, _ := filepath.Glob("/dev/ttyS*")
s2, _ := filepath.Glob("/dev/ttyUSB*")
devs = append(devs, s1...)
devs = append(devs, s2...)
var infos []DiscoverInfo
for _, d := range devs {
info := DiscoverInfo{
PortName: d,
}
name := filepath.Base(d)
subsystem := ""
devpath := fmt.Sprintf("/sys/class/tty/%s/device", name)
if _, err := os.Lstat(devpath); err == nil {
devpath, _ = realpath.Realpath(devpath)
subsystem = filepath.Join(devpath, "subsystem")
subsystem, _ = realpath.Realpath(subsystem)
subsystem = filepath.Base(subsystem)
}
usbpath := ""
switch subsystem {
case "usb-serial":
usbpath = filepath.Dir(filepath.Dir(devpath))
info.Type = PortTypeUsb
case "usb":
usbpath = filepath.Dir(devpath)
info.Type = PortTypeUsb
case "pnp":
info.Type = PortTypeIntegrated
case "platform":
// Not a real serial port, just exposed by the driver
continue
default:
fmt.Println("unknown subsystem", subsystem)
}
switch info.Type {
case PortTypeUsb:
info.Description = readLine(filepath.Join(usbpath, "product"))
idvendor, _ := strconv.Atoi(readLine(filepath.Join(usbpath, "idVendor")))
info.UsbVendorId = idvendor
idproduct, _ := strconv.Atoi(readLine(filepath.Join(usbpath, "idProduct")))
info.UsbProductId = idproduct
info.UsbSerialNo = readLine(filepath.Join(usbpath, "serial"))
}
infos = append(infos, info)
}
return infos, nil
}
func MustRealPath(path string) string {
out, err := realpath.Realpath(path)
if err != nil {
panic(err)
}
return out
}
func send_file(filename string) {
var identifier string = generate_id()
realpath, _ := realpath.Realpath(filename)
filename = path.Base(filename)
var hfn string = make_hash(filename)
var host string = "local.dev"
encrypt_file(realpath, hfn)
fmt.Println(host, identifier)
}
// Same as 'filepath.walk' but the 'path' is changed to its 'realpath' to
// resolve symbolic links and avoid loops.
func realPathWalk(path string, info os.FileInfo, walkFn filepath.WalkFunc, visited map[string]bool) error {
realPath, err := realpath.Realpath(path)
if err == nil {
path = realPath
if visited[path] {
return nil
}
visited[path] = true
var realInfo os.FileInfo
realInfo, err = os.Lstat(path)
if err == nil {
info = realInfo
}
}
err = walkFn(path, info, err)
if err != nil {
if info.IsDir() && err == filepath.SkipDir {
return nil
}
return err
}
if !info.IsDir() {
return nil
}
names, err := readDirNames(path)
if err != nil {
return walkFn(path, info, err)
}
for _, name := range names {
filename := filepath.Join(path, name)
fileInfo, err := os.Lstat(filename)
if err != nil {
if err := walkFn(filename, fileInfo, err); err != nil && err != filepath.SkipDir {
return err
}
} else {
err = realPathWalk(filename, fileInfo, walkFn, visited)
if err != nil {
if !fileInfo.IsDir() || err != filepath.SkipDir {
return err
}
}
}
}
return nil
}
func fnRealpath(L *lua.LState) int {
filep := L.CheckString(1)
real, err := realpath.Realpath(filep)
if err != nil {
L.Push(lua.LNil)
L.Push(lua.LString(err.Error()))
return 2
}
L.Push(lua.LString(real))
return 1
}
func main() {
// print the realpath result for each targets
for _, target := range targets {
p, err := realpath.Realpath(target)
if err != nil {
// output error
fmt.Fprintln(os.Stderr, err.Error())
return
}
// normal output
fmt.Fprintln(os.Stdout, p)
}
}
func (w *walker) Run(fr *FileRecord) error {
if !options.Extensions[strings.ToLower(Ext(fr.input.path))] {
fr.debug.Printf("Unknown extension '%v'", Ext(fr.input.path))
return errInputFile
}
rpath, err := realpath.Realpath(fr.input.path)
if err != nil {
fr.error.Print("Cannot get real path:", err)
return errInputFile
}
if w.visited[rpath] {
fr.debug.Print("Duplicate file")
return errInputFile
}
w.visited[rpath] = true
return nil
}
func fetchDir(fp string, fi os.FileInfo, err error) error {
// can't walk here,
// but continue walking elsewhere
if err != nil {
return nil
}
if !!fi.IsDir() && fp != "." {
oldPath, _ := realpath.Realpath(".")
matched, _ := filepath.Match("*/.git", fp)
if matched {
dirs := strings.Split(fp, ".")
fmt.Println("Enter in :", dirs[0])
fmt.Println("Trying to pull...")
os.Chdir(dirs[0])
pull()
os.Chdir(oldPath)
fmt.Println()
}
}
return nil
}
func (a *analyzer) RunAllScripts(fr *FileRecord, track int, defaultTags map[string]string) error {
input := &fr.input
output := &fr.output[track]
prepareTrackTags(input, track)
if o, ok := cache.index[input.path]; ok && len(o) > track {
*output = cache.index[input.path][track]
options.Gettags = false
} else {
// Default tags.
output.Tags = make(map[string]string)
for k, v := range input.tags {
output.Tags[k] = v
}
for k, v := range defaultTags {
output.Tags[k] = v
}
// Default codec options.
output.Format = fr.Format.FormatName
}
// Create a Lua sandbox containing input and output, then run scripts.
a.scriptLog.SetOutput(&fr.logBuf)
for _, script := range cache.scripts {
err := RunScript(a.L, script.name, input, output)
if err != nil {
fr.error.Printf("Script %s: %s", script.name, err)
return err
}
}
// Foolproofing.
// -No format: use input.format.
// -No parameters: use "-c:a copy".
// -Empty output basename: use input path.
// -Remove empty tags to avoid storing empty strings in FFmpeg.
// -Do not remove source when file has multiple tracks.
foolproof := func() {
if output.Format == "" {
output.Format = fr.Format.FormatName
}
if len(output.Parameters) == 0 {
output.Parameters = []string{"-c:a", "copy"}
}
if Basename(output.Path) == "" {
output.Path = input.path
}
var err error
output.Path, err = filepath.Abs(output.Path)
if err != nil {
fr.warning.Print("Cannot get absolute path:", err)
}
for tag, value := range output.Tags {
if value == "" {
delete(output.Tags, tag)
}
}
if input.trackCount > 1 {
output.Rmsrc = false
}
}
foolproof()
// 'output.Write' should not be set from scripts.
output.Write = existWriteSuffix
// Check for existence.
_, err := os.Stat(output.Path)
if err == nil || !os.IsNotExist(err) {
fr.status[track] = statusExist
if cache.actions[actionExist] != "" {
// 'output.Path' exists.
// The realpath is required to see if transformation is inplace.
output.Path, err = realpath.Realpath(output.Path)
if err != nil {
// The realpath can only be expanded when the parent folder exists.
fr.error.Print(err)
return err
}
fr.exist.path = output.Path
err := prepareInput(fr, &fr.exist)
if err != nil {
fr.error.Print(err)
return err
}
// Save output.Path to guarantee no action will change it.
savedPath := output.Path
prepareTrackTags(&fr.exist, track)
err = RunAction(a.L, actionExist, input, output, &fr.exist)
if err != nil {
fr.error.Printf("Exist action: %s", err)
return err
}
output.Path = savedPath
foolproof()
} else {
// If no exist action is run, append a suffix.
output.Write = existWriteSuffix
}
switch output.Write {
case existWriteOver:
if output.Path == input.path {
if output.Rmsrc {
fr.warning.Println("write file in-place:", output.Path)
} else {
fr.error.Print("cannot overwrite and keep source file at the same time:", input.path)
}
} else {
fr.warning.Println("overwrite existing destination:", output.Path)
if output.Rmsrc {
fr.warning.Println("remove source:", input.path)
}
}
case existWriteSkip:
if output.Path == input.path && output.Rmsrc {
fr.warning.Println("write file in-place:", output.Path)
} else {
fr.warning.Println("skip existing destination:", output.Path)
if output.Rmsrc {
fr.warning.Println("remove source:", input.path)
}
}
default:
output.Write = existWriteSuffix
if output.Path == input.path && output.Rmsrc {
fr.warning.Println("write file in-place:", output.Path)
} else {
fr.warning.Println("append suffix to existing destination:", output.Path)
if output.Rmsrc {
fr.warning.Println("remove source:", input.path)
}
}
}
} else {
// Destination does not exist.
if output.Rmsrc {
fr.warning.Println("remove source:", input.path)
}
}
return nil
}
func splitGoPath() ([]string, error) {
goPath_s := os.Getenv("GOPATH")
if goPath_s == "" {
// fmt.Fprintln(os.Stderr, "GOPATH env var must be set")
errMsg := fmt.Sprint("GOPATH environment variable must be set")
return nil, errors.New(errMsg)
}
var err error
wd := [3]string{}
// rwd, err := os.Getwd()
wd[0], err = os.Getwd()
if err != nil {
panic(err)
}
// xwd, err := filepath.Abs(rwd)
wd[1], err = filepath.Abs(wd[0])
if err != nil {
panic(err)
}
// awd, err := realpath.Realpath(xwd)
wd[2], err = realpath.Realpath(wd[1])
if err != nil {
panic(err)
}
ret := make([]string, 0, 2)
goPath := ""
goPath_l := strings.Split(goPath_s, ":")
awd := ""
gopathLoop:
for _, goPath = range goPath_l {
goPathPrefix := filepath.Join(goPath, "src")
for i := range wd {
// if strings.HasPrefix(awd, goPathPrefix) {
if strings.HasPrefix(wd[i], goPathPrefix) {
if *debug {
log.Printf("gopath='%s'\n", goPath)
}
ret = append(ret, goPath)
awd = wd[i]
break gopathLoop
}
}
}
if *debug {
log.Printf("wd=%q, awd='%s', gopaths=%q, goPath='%s', len(goPath)=%d\n",
wd, awd, goPath_l, goPath, len(goPath))
// log.Printf("wd='%s', awd='%s', len(awd)=%d, goPath='%s', len(goPath)=%d\n",
// rwd, awd, len(awd), goPath, len(goPath))
}
if len(ret) == 0 {
// fmt.Fprintln(os.Stderr, "not in a subfolder of $GOPATH/src")
errMsg := fmt.Sprint("not in a subfolder of $GOPATH/src")
return nil, errors.New(errMsg)
}
goPathBaseLen := len(goPath) + 1 + 4
if len(awd) <= goPathBaseLen {
// fmt.Fprintln(os.Stderr, "not in a subfolder of $GOPATH/src")
// return ret
errMsg := fmt.Sprint("not in a subfolder of $GOPATH/src")
return ret, errors.New(errMsg)
}
goPkg := awd[goPathBaseLen:]
ret = append(ret, goPkg)
return ret, nil
}
// Create a new destination file 'dst'. See makeTrackDst.
// As a special case, if the checksums match in input and dst, return "", nil.
// TODO: Test how memoization scales with visitedDstCovers.
func makeCoverDst(fr *FileRecord, dst string, inputPath string, checksum string) (string, error) {
if st, err := os.Stat(dst); err == nil || !os.IsNotExist(err) {
// 'dst' exists.
// Realpath is required for cache key uniqueness.
dst, err = realpath.Realpath(dst)
if err != nil {
return "", err
}
visitedDstCovers.RLock()
visited := visitedDstCovers.v[dstCoverKey{path: dst, checksum: checksum}]
visitedDstCovers.RUnlock()
if visited {
return "", nil
}
visitedDstCovers.Lock()
visitedDstCovers.v[dstCoverKey{path: dst, checksum: checksum}] = true
visitedDstCovers.Unlock()
// Compute checksum of existing cover and early-out if equal.
fd, err := os.Open(dst)
if err != nil {
return "", err
}
defer fd.Close()
// TODO: Cache checksums.
hi := st.Size()
if hi > coverChecksumBlock {
hi = coverChecksumBlock
}
buf := [coverChecksumBlock]byte{}
_, err = (*fd).ReadAt(buf[:hi], 0)
if err != nil && err != io.EOF {
return "", err
}
dstChecksum := fmt.Sprintf("%x", md5.Sum(buf[:hi]))
if checksum == dstChecksum {
return "", nil
}
// If not inplace, create a temp file.
f, err := TempFile(filepath.Dir(dst), StripExt(filepath.Base(dst))+"_", "."+Ext(dst))
if err != nil {
return "", err
}
dst = f.Name()
f.Close()
} else {
// 'dst' does not exist.
st, err := os.Stat(inputPath)
if err != nil {
return "", err
}
fd, err := os.OpenFile(dst, os.O_CREATE|os.O_EXCL, st.Mode())
if err != nil {
// Either the parent folder is not writable, or a race condition happened:
// file was created between existence check and file creation.
return "", err
}
fd.Close()
// Save to cache.
dst, err = realpath.Realpath(dst)
if err != nil {
return "", err
}
visitedDstCovers.Lock()
visitedDstCovers.v[dstCoverKey{path: dst, checksum: checksum}] = true
visitedDstCovers.Unlock()
}
return dst, nil
}
