2 goredo -- redo implementation on pure Go
3 Copyright (C) 2020-2021 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"
40 func mustSetenv(key, value string) {
41 if err := os.Setenv(key, value); err != nil {
46 func mustParseFd(v, name string) *os.File {
47 ptr, err := strconv.ParseUint(v, 10, 64)
51 fd := os.NewFile(uintptr(ptr), name)
53 panic("can not parse fd: " + name)
59 version := flag.Bool("version", false, "print version")
60 warranty := flag.Bool("warranty", false, "print warranty information")
61 symlinks := flag.Bool("symlinks", false, "create necessary symlinks in current directory")
70 fmt.Println(versionGet())
75 for _, cmdName := range []string{
86 fmt.Println(os.Args[0], "<-", cmdName)
87 if err := os.Symlink(os.Args[0], cmdName); err != nil {
102 NoColor = os.Getenv(EnvNoColor) != ""
103 NoSync = os.Getenv(EnvNoSync) == "1"
105 TopDir = os.Getenv(EnvTopDir)
109 TopDir, err = filepath.Abs(TopDir)
114 DirPrefix = os.Getenv(EnvDirPrefix)
117 mustSetenv(EnvStderrKeep, "1")
119 if *flagStderrSilent {
120 mustSetenv(EnvStderrSilent, "1")
123 mustSetenv(EnvNoProgress, "1")
126 mustSetenv(EnvDebug, "1")
129 mustSetenv(EnvLogWait, "1")
132 mustSetenv(EnvLogLock, "1")
135 mustSetenv(EnvLogPid, "1")
138 mustSetenv(EnvLogJS, "1")
140 StderrKeep = os.Getenv(EnvStderrKeep) == "1"
141 StderrSilent = os.Getenv(EnvStderrSilent) == "1"
142 NoProgress = os.Getenv(EnvNoProgress) == "1"
143 Debug = os.Getenv(EnvDebug) == "1"
144 LogWait = os.Getenv(EnvLogWait) == "1"
145 LogLock = os.Getenv(EnvLogLock) == "1"
146 LogJS = os.Getenv(EnvLogJS) == "1"
147 if Debug || os.Getenv(EnvLogPid) == "1" {
152 mustSetenv(EnvTrace, "1")
157 traced = os.Getenv(EnvTrace) == "1"
160 // Those are internal envs
161 StderrPrefix = os.Getenv(EnvStderrPrefix)
162 if v := os.Getenv(EnvLevel); v != "" {
163 Level, err = strconv.Atoi(v)
168 panic("negative " + EnvLevel)
172 if v := os.Getenv(EnvDepFd); v != "" {
173 fdDep = mustParseFd(v, EnvDepFd)
175 BuildUUID = os.Getenv(EnvBuildUUID)
179 if _, err = io.ReadFull(rand.Reader, raw[:]); err != nil {
182 raw[6] = (raw[6] & 0x0F) | uint8(4<<4) // version 4
183 BuildUUID = fmt.Sprintf(
185 raw[0:4], raw[4:6], raw[6:8], raw[8:10], raw[10:],
188 tgts = []string{"all"}
193 for i, tgt := range tgts {
195 tgts[i] = cwdMustRel(tgt)
201 cmdName := path.Base(os.Args[0])
203 CDebug, "[%s] run: %s %s cwd:%s dirprefix:%s",
204 BuildUUID, cmdName, tgts, Cwd, DirPrefix,
210 for _, tgt := range tgts {
211 ok, err = ifchange([]string{tgt}, true, traced)
212 if err != nil || !ok {
216 case "redo-ifchange":
217 ok, err = ifchange(tgts, false, traced)
219 err = writeDeps(fdDep, tgts)
221 case "redo-ifcreate":
223 log.Fatalln("no", EnvDepFd)
225 for _, tgt := range tgts {
226 err = ifcreate(fdDep, tgt)
233 log.Fatalln("no", EnvDepFd)
237 for _, what := range tgts {
238 err = cleanupWalker(Cwd, what)
247 log.Fatalln("no", EnvDepFd)
249 err = stamp(fdDep, os.Stdin)
252 log.Fatalln("single target expected")
254 d, t := cwdAndTgt(tgts[0])
256 fd, err = os.Open(path.Join(d, RedoDir, t+LogSuffix))
260 _, err = io.Copy(os.Stdout, fd)
263 log.Fatalln("single target expected")
266 fdTmp, err = ioutil.TempFile("", "")
270 os.Remove(fdTmp.Name())
271 cwd, tgt := cwdAndTgt(tgts[0])
272 doFile, upLevels, err := findDo(fdTmp, cwd, tgt)
276 _, err = fdTmp.Seek(0, 0)
280 r := recfile.NewReader(fdTmp)
282 m, err := r.NextMap()
289 fmt.Println(cwdMustRel(cwd, m["Target"]))
294 p := make([]string, 0, upLevels+2)
296 for i := 0; i < upLevels; i++ {
299 p = append(p, doFile)
300 rel, err := filepath.Rel(Cwd, path.Join(p...))
307 log.Fatalln("unknown command", cmdName)
313 if !ok || err != nil {
316 trace(CDebug, "[%s] finished: %s %s", BuildUUID, cmdName, tgts)