2 goredo -- redo implementation on pure Go
3 Copyright (C) 2020 Sergey Matveev <stargrave@stargrave.org>
5 This program is free software: you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation, version 3 of the License.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>.
32 "go.cypherpunks.ru/recfile"
33 "golang.org/x/sys/unix"
41 func mustSetenv(key, value string) {
42 if err := os.Setenv(key, value); err != nil {
47 func mustParseFd(v, name string) *os.File {
48 ptr, err := strconv.ParseUint(v, 10, 64)
52 fd := os.NewFile(uintptr(ptr), name)
54 panic("can not parse fd: " + name)
60 version := flag.Bool("version", false, "print version")
61 warranty := flag.Bool("warranty", false, "print warranty information")
62 symlinks := flag.Bool("symlinks", false, "create necessary symlinks in current direcotyr")
71 fmt.Println(versionGet())
76 for _, cmdName := range []string{
87 if err := os.Symlink(os.Args[0], cmdName); err != nil {
97 Cwd, err = unix.Getwd()
102 NoColor = os.Getenv(EnvNoColor) != ""
103 NoHash = os.Getenv(EnvNoHash) == "1"
104 NoSync = os.Getenv(EnvNoSync) == "1"
106 TopDir = os.Getenv(EnvTopDir)
108 TopDir, err = filepath.Abs(TopDir)
115 mustSetenv(EnvStderrKeep, "1")
117 if *flagStderrSilent {
118 mustSetenv(EnvStderrSilent, "1")
121 mustSetenv(EnvDebug, "1")
124 mustSetenv(EnvLogWait, "1")
127 mustSetenv(EnvLogLock, "1")
130 mustSetenv(EnvLogPid, "1")
133 mustSetenv(EnvLogJS, "1")
135 StderrKeep = os.Getenv(EnvStderrKeep) == "1"
136 StderrSilent = os.Getenv(EnvStderrSilent) == "1"
137 Debug = os.Getenv(EnvDebug) == "1"
138 LogWait = os.Getenv(EnvLogWait) == "1"
139 LogLock = os.Getenv(EnvLogLock) == "1"
140 LogJS = os.Getenv(EnvLogJS) == "1"
141 if Debug || os.Getenv(EnvLogPid) == "1" {
147 Trace = os.Getenv(EnvTrace) == "1"
150 // Those are internal envs
151 StderrPrefix = os.Getenv(EnvStderrPrefix)
152 if v := os.Getenv(EnvLevel); v != "" {
153 Level, err = strconv.Atoi(v)
158 panic("negative " + EnvLevel)
162 if v := os.Getenv(EnvDepFd); v != "" {
163 fdDep = mustParseFd(v, EnvDepFd)
165 BuildUUID = os.Getenv(EnvBuildUUID)
168 if _, err = io.ReadFull(rand.Reader, raw[:]); err != nil {
171 raw[6] = (raw[6] & 0x0F) | uint8(4<<4) // version 4
172 BuildUUID = fmt.Sprintf(
174 raw[0:4], raw[4:6], raw[6:8], raw[8:10], raw[10:],
180 tgts = []string{"all"}
184 cmdName := path.Base(os.Args[0])
185 trace(CDebug, "[%s] run: %s %s [%s]", BuildUUID, cmdName, tgts, Cwd)
191 ok, err = ifchange(tgts)
192 case "redo-ifchange":
193 ok, err = ifchange(tgts)
194 writeDeps(fdDep, tgts)
195 case "redo-ifcreate":
197 log.Fatalln("no", EnvDepFd)
199 for _, tgt := range tgts {
200 err = ifcreate(fdDep, tgt)
207 log.Fatalln("no", EnvDepFd)
211 for _, what := range tgts {
212 err = cleanupWalker(Cwd, what)
221 log.Fatalln("no", EnvDepFd)
223 err = stamp(fdDep, os.Stdin)
226 log.Fatalln("single target expected")
228 d, t := cwdAndTgt(tgts[0])
230 fd, err = os.Open(path.Join(d, RedoDir, t+LogSuffix))
234 _, err = io.Copy(os.Stdout, fd)
237 log.Fatalln("single target expected")
240 fdTmp, err = ioutil.TempFile("", "")
244 os.Remove(fdTmp.Name())
246 cwd, tgt := cwdAndTgt(tgts[0])
247 doFile, _, err = findDo(fdTmp, cwd, tgt)
252 r := recfile.NewReader(fdTmp)
254 m, err := r.NextMap()
261 fmt.Println(cwdMustRel(cwd, m["Target"]))
265 log.Fatalln("unknown command", cmdName)
271 if !ok || err != nil {
274 trace(CDebug, "[%s] finished: %s %s", BuildUUID, cmdName, tgts)