func main() {
c := cmd.AppCtx()
opts.NewFlag("D", "debug", &c.Debug)
cmd.UnixIO("err")
args := opts.Parse()
if len(args) == 1 && ismode(args[0]) {
args = append([]string{"mode"}, args...)
}
if len(args) == 0 || len(args)%2 != 0 {
cmd.Warn("wrong number of arguments")
opts.Usage()
}
nd := chd(args...)
in := cmd.In("in")
var err error
for m := range in {
switch d := m.(type) {
case zx.Dir:
cmd.Dprintf("got %T %s\n", d, d["Upath"])
if cerr := ch(d, nd); cerr != nil {
cmd.Warn("%s", cerr)
err = cerr
}
default:
// ignored
cmd.Dprintf("got %T\n", m)
}
}
if err != nil {
cmd.Exit(err)
}
}
func runFiles(fn func(nm string, c chan []byte, dc chan bool)) {
var lnc chan []byte
var dc chan bool
in := cmd.Lines(cmd.In("in"))
out := cmd.Out("out")
nm := "in"
for m := range in {
cmd.Dprintf("got %T\n", m)
switch m := m.(type) {
case zx.Dir:
if pflag {
p := m["Upath"]
if p == "" {
p = m["path"]
}
nm = p
}
if dc != nil {
close(lnc)
<-dc
}
dc = nil
lnc = nil
if ok := out <- m; !ok {
close(in, cerror(out))
}
case []byte:
if dc == nil {
lnc = make(chan []byte)
dc = make(chan bool, 1)
go fn(nm, lnc, dc)
}
if ok := lnc <- m; !ok {
close(in, cerror(lnc))
close(out, cerror(lnc))
}
default:
if dc != nil {
close(lnc)
<-dc
}
dc = nil
lnc = nil
if ok := out <- m; !ok {
close(lnc, cerror(out))
close(in, cerror(out))
}
}
}
if dc != nil {
close(lnc, cerror(in))
<-dc
}
cmd.Exit(cerror(in))
}
// Run echo in the current app context.
func main() {
cmd.UnixIO("err")
c := cmd.AppCtx()
opts.NewFlag("D", "debug", &c.Debug)
opts.NewFlag("n", "don't add a final newline", &nflag)
opts.NewFlag("m", "issue one message per arg", &mflag)
opts.NewFlag("u", "use unix out", &ux)
opts.NewFlag("o", "chan: output to this chan (for testing other tools)", &oname)
opts.NewFlag("i", "chan: echo input from this chan (for testing other tools)", &iname)
args := opts.Parse()
if ux {
cmd.UnixIO(oname)
}
var b bytes.Buffer
out := cmd.Out(oname)
if out == nil {
cmd.Fatal("no output chan '%s'", oname)
}
mflag = mflag || iname != ""
for i, arg := range args {
if mflag {
ok := out <- []byte(arg)
if !ok {
cmd.Fatal("out: %s", cerror(out))
}
} else {
b.WriteString(arg)
if i < len(args)-1 {
b.WriteString(" ")
}
}
}
if iname != "" {
for x := range cmd.In(iname) {
x := x
if b, ok := x.([]byte); ok {
ok := out <- []byte(b)
if !ok {
cmd.Fatal("out: %s", cerror(out))
}
}
}
}
if mflag {
cmd.Exit(nil)
}
if !nflag {
b.WriteString("\n")
}
ok := out <- b.Bytes()
if !ok {
cmd.Fatal("out: %s", cerror(out))
}
}
// Run print lines in the current app context.
func main() {
c := cmd.AppCtx()
cmd.UnixIO("err")
opts.NewFlag("D", "debug", &c.Debug)
opts.NewFlag("1", "collect all files (not one msg per file)", &one)
ux := false
opts.NewFlag("u", "use unix out", &ux)
args := opts.Parse()
if ux {
cmd.UnixIO("out")
}
if len(args) != 0 {
cmd.SetIn("in", cmd.Files(args...))
}
buf := &bytes.Buffer{}
in := cmd.In("in")
out := cmd.Out("out")
for m := range in {
switch m := m.(type) {
case []byte:
buf.Write(m)
case zx.Dir:
if !one && buf.Len() > 0 {
if ok := out <- buf.Bytes(); !ok {
close(in, cerror(out))
break
}
buf = &bytes.Buffer{}
}
if !one && !ux {
if ok := out <- m; !ok {
close(in, cerror(out))
break
}
}
case error:
cmd.Warn("%s", m)
default:
cmd.Dprintf("ignored %T\n", m)
if !ux {
if ok := out <- m; !ok {
close(in, cerror(out))
break
}
}
}
}
if buf.Len() > 0 {
out <- buf.Bytes()
}
if err := cerror(in); err != nil {
cmd.Fatal(err)
}
}
func main() {
cmd.UnixIO("err")
cmd.UnixIO("in")
args := opts.Parse()
if len(args) != 0 {
in := cmd.Files(args...)
cmd.SetIn("in", in)
}
out := cmd.Out("out")
in := cmd.In("in")
for m := range in {
if ok := out <- m; !ok {
close(in, cerror(out))
}
}
if err := cerror(in); err != nil {
cmd.Fatal(err)
}
}
// Run cols in the current app context.
func main() {
c := cmd.AppCtx()
opts.NewFlag("D", "debug", &c.Debug)
opts.NewFlag("w", "wid: set max line width", &wid)
opts.NewFlag("n", "ncols: set number of columns", &ncols)
opts.NewFlag("u", "use unix output", &ux)
cmd.UnixIO("err")
args := opts.Parse()
if ux {
cmd.UnixIO("out")
}
if len(args) != 0 {
cmd.SetIn("in", cmd.Files(args...))
}
in := cmd.In("in")
for m := range in {
switch m := m.(type) {
default:
// ignored & forwarded
cmd.Dprintf("got %T\n", m)
continue
case zx.Dir:
cmd.Dprintf("got %T %s\n", m, m["Upath"])
add(strings.TrimSpace(m["name"]))
case error:
if m != nil {
cmd.Warn("%s", m)
}
case []byte:
cmd.Dprintf("got %T [%d]\n", m, len(m))
words := strings.Fields(strings.TrimSpace(string(m)))
add(words...)
}
}
col()
if err := cerror(in); err != nil {
cmd.Fatal("in %s", err)
}
}
func find(dump, dpref, rel string, dc chan<- zx.Dir, ufile zx.Dir) {
droot := fpath.Join(dump, dpref)
years, err := cmd.GetDir(droot)
if err != nil {
cmd.Warn("%s", err)
return
}
for i := len(years) - 1; i >= 0; i-- {
year := years[i]["name"]
if ignored(year, "") {
continue
}
ypath := years[i]["path"]
days, err := cmd.GetDir(ypath)
if err != nil {
cmd.Warn("%s: %s", ypath, err)
continue
}
lastsz, lastmt, lastm := "", "", ""
for j := len(days) - 1; j >= 0; j-- {
day := days[j]["name"]
if ignored(year, day) {
continue
}
fpath := fpath.Join(days[j]["path"], rel)
d, err := cmd.Stat(fpath)
if err != nil {
if !force {
cmd.Dprintf("find: %s", err)
return
}
continue
}
newm, newsz, newmt := d["mode"], d["size"], d["mtime"]
if newsz == lastsz && newmt == lastmt && newm == lastm {
continue
}
lastm, lastsz, lastmt = newm, newsz, newmt
d["upath"] = ufile["path"]
d["uupath"] = ufile["upath"]
if ok := dc <- d; !ok {
return
}
if !all {
return
}
}
}
}
func report(dc chan zx.Dir, donec chan bool) {
last := ""
for d := range dc {
if last == "" {
last = d["Upath"]
if last == "" {
last = d["path"]
}
}
p := d["path"]
cmd.Dprintf("found '%s'\n", p)
var err error
switch {
case xcmd != "":
_, err = cmd.Printf("%s %s %s\n", xcmd, p, last)
case dflag:
dcmd := fmt.Sprintf(`9 diff -n %s %s`, p, last)
_, err = cmd.Printf("%s\n", dcmd)
if err != nil {
cmd.Warn("diff: %s", err)
continue
}
case lflag:
_, err = cmd.Printf("%s\n", d.Fmt())
case cflag:
_, err = cmd.Printf("cp %s %s\n", p, d["Upath"])
default:
_, err = cmd.Printf("%s\n", d["path"])
}
if err != nil {
close(dc, err)
}
last = p
}
close(donec, cerror(dc))
}
func hist(in <-chan face{}) error {
dc := make(chan zx.Dir)
ec := make(chan bool)
go report(dc, ec)
var sts error
for m := range in {
switch m := m.(type) {
case zx.Dir:
cmd.Dprintf("got %T %s\n", m, m["path"])
file := m["path"]
if m["upath"] == "" {
m["upath"] = m["path"]
}
ddir := dump
dpref := ""
rel := ""
switch {
case zx.HasPrefix(file, "/zx"):
if ddir == "" {
ddir = "/dump"
}
dpref = "/zx"
rel = zx.Suffix(file, "/zx")
case zx.HasPrefix(file, "/u/gosrc/src/clive"):
if ddir == "" {
ddir = "/u/dump"
}
dpref = "clive"
rel = zx.Suffix(file, "/u/gosrc/src/clive")
case zx.HasPrefix(file, "/u"):
if ddir == "" {
ddir = "/u/dump"
}
els := zx.Elems(file)
if len(els) < 3 {
cmd.Warn("%s: too few path elements", m["upath"])
sts = errNoDump
continue
}
dpref = els[1]
rel = zx.Path(els[2:]...)
default:
cmd.Warn("%s: %s", m["upath"], errNoDump)
sts = errNoDump
continue
}
find(ddir, dpref, rel, dc, m.Dup())
default:
cmd.Dprintf("got %T\n", m)
}
}
close(dc, cerror(in))
<-ec
if sts == nil {
sts = cerror(ec)
}
if sts == nil {
sts = cerror(in)
}
return sts
}
// Run cnt in the current app context.
func main() {
c := cmd.AppCtx()
cmd.UnixIO("err")
opts.NewFlag("D", "debug", &c.Debug)
opts.NewFlag("f", "force search past file removals", &force)
opts.NewFlag("l", "produce a long listing (or print just the name)", &lflag)
opts.NewFlag("c", "copy the file from the dump", &cflag)
opts.NewFlag("d", "print file differences", &dflag)
opts.NewFlag("x", "cmd: print lines to execute this command between versions", &xcmd)
opts.NewFlag("a", "list all copies that differ, not just the last one.", &all)
opts.NewFlag("p", "dumpdir: path to dump (default is /dump or /u/dump)", &dump)
t := time.Now()
when := t
opts.NewFlag("w", "date: backward search start time (default is now)", &when)
ux := false
opts.NewFlag("u", "unix IO", &ux)
args := opts.Parse()
if (all && cflag) || (force && !all) {
cmd.Warn("incompatible flags")
opts.Usage()
}
if ux {
cmd.UnixIO("out")
}
lastyear = ""
lastday = ""
if !t.Equal(when) {
y := when.Year()
m := when.Month()
d := when.Day()
if y == 0 {
y = t.Year()
}
lastyear = fmt.Sprintf("%04d", y)
lastday = fmt.Sprintf("%02d%02d", m, d)
}
if len(args) != 0 {
cmd.SetIn("in", cmd.Dirs(args...))
}
in := cmd.In("in")
if err := hist(in); err != nil {
cmd.Fatal(err)
}
}
// Run rem in the current app context.
func main() {
c := cmd.AppCtx()
cmd.UnixIO("err")
opts.NewFlag("D", "debug", &c.Debug)
opts.NewFlag("v", "verbose; print the calls made in the order they are made.", &c.Verb)
opts.NewFlag("a", "remove all", &aflag)
opts.NewFlag("f", "quiet, called 'force' in unix", &fflag)
opts.NewFlag("n", "dry run; report removes but do not do them", &dry)
args := opts.Parse()
if len(args) != 0 {
cmd.SetIn("in", cmd.Dirs(args...))
}
c.Verb = c.Verb || dry
in := cmd.In("in")
var err error
for m := range in {
switch d := m.(type) {
case zx.Dir:
cmd.Dprintf("got %T %s\n", d, d["upath"])
dirs = append(dirs, d)
case error:
cmd.Warn("%s", d)
default:
// ignored
cmd.Dprintf("ignored %T\n", m)
}
}
if aflag {
for i := 0; i < len(dirs); i++ {
if dirs[i] == nil {
continue
}
pi := dirs[i]["path"]
for j := 1; j < len(dirs); j++ {
if i == j || dirs[j] == nil {
continue
}
pj := dirs[j]["path"]
if zx.HasPrefix(pj, pi) {
dirs[j] = nil
}
}
}
}
for i := len(dirs) - 1; i >= 0; i-- {
if dirs[i] == nil {
continue
}
if cerr := rmf(dirs[i]); cerr != nil {
if !fflag {
cmd.Warn("%s", cerr)
err = cerr
}
}
}
if err == nil {
err = cerror(in)
if err != nil {
cmd.Fatal(err)
}
}
cmd.Exit(err)
}