2 goredo -- djb's redo implementation on pure Go
3 Copyright (C) 2020-2023 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/>.
29 deps map[string]map[string]struct{},
32 cwd, tgt := cwdAndTgt(path.Join(cwd, tgtOrig))
33 depPath := path.Join(cwd, RedoDir, tgt+DepSuffix)
34 fdDep, err := os.Open(depPath)
38 depInfo, err := depRead(fdDep)
45 tgtRel := cwdMustRel(cwd, tgt)
47 if depInfo.build == BuildUUID {
49 CDebug, "ood: %s%s always, but already build",
50 strings.Repeat(". ", level), tgtOrig,
54 tracef(CDebug, "ood: %s%s always", strings.Repeat(". ", level), tgtOrig)
55 alwayses = append(alwayses, tgtRel)
59 for _, m := range depInfo.ifchanges {
67 if !includeSrc && isSrc(cwd, dep) {
71 depRel := cwdMustRel(cwd, dep)
72 if m, ok := deps[depRel]; ok {
73 m[tgtRel] = struct{}{}
75 m = map[string]struct{}{}
76 m[tgtRel] = struct{}{}
81 collectDeps(cwd, dep, level+1, deps, includeSrc)...,
88 func buildDependants(tgts []string) map[string]struct{} {
90 tracef(CDebug, "collecting deps")
91 seen := map[string]struct{}{}
92 deps := map[string]map[string]struct{}{}
93 for _, tgtInitial := range tgts {
94 for _, tgt := range collectDeps(Cwd, tgtInitial, 0, deps, false) {
95 if tgt != tgtInitial {
96 seen[tgt] = struct{}{}
109 tracef(CDebug, "building %d alwayses: %v", len(seen), seen)
110 errs := make(chan error, len(seen))
112 okChecker := make(chan struct{})
114 for err := range errs {
115 ok = isOkRun(err) && ok
119 for tgt := range seen {
120 if err := runScript(tgt, errs, false, false); err != nil {
121 tracef(CErr, "always run error: %s, skipping dependants", err)
131 tracef(CDebug, "alwayses failed, skipping dependants")
135 queueSrc := make([]string, 0, len(seen))
136 for tgt := range seen {
137 queueSrc = append(queueSrc, tgt)
139 if len(queueSrc) == 0 {
144 tracef(CDebug, "checking %d dependant targets: %v", len(queueSrc), queueSrc)
145 queue := map[string]struct{}{}
146 for _, tgt := range queueSrc {
147 for dep := range deps[tgt] {
148 queue[dep] = struct{}{}
152 tracef(CDebug, "building %d dependant targets: %v", len(queue), queue)
153 errs = make(chan error, len(queue))
154 okChecker = make(chan struct{})
156 queueSrc = []string{}
158 for err := range errs {
159 ok = isOkRun(err) && ok
163 for tgt := range queue {
164 ood, err := isOODWithTrace(Cwd, tgt, 0, seen)
166 tracef(CErr, "dependant error: %s, skipping dependants", err)
172 if err := runScript(tgt, errs, false, false); err != nil {
173 tracef(CErr, "dependant error: %s, skipping dependants", err)
176 queueSrc = append(queueSrc, tgt)
177 seen[tgt] = struct{}{}
184 tracef(CDebug, "dependants failed, skipping them")
194 func ifchange(tgts []string, forced, traced bool) (bool, error) {
195 // only unique elements
196 m := make(map[string]struct{})
197 for _, t := range tgts {
202 tgts = append(tgts, t)
208 defer jsAcquire("ifchange exiting")
210 seen := buildDependants(tgts)
216 tracef(CDebug, "building %d targets: %v", len(tgts), tgts)
220 okChecker := make(chan struct{})
221 errs := make(chan error, len(tgts))
223 for err := range errs {
224 ok = isOkRun(err) && ok
228 for _, tgt := range tgts {
229 if _, ok := seen[tgt]; ok {
230 tracef(CDebug, "%s was already build as a dependant", tgt)
235 ood, err = isOODWithTrace(Cwd, tgt, 0, seen)
246 tracef(CDebug, "%s is source, not redoing", tgt)
249 if err = runScript(tgt, errs, forced, traced); err != nil {