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{},
31 seen map[string]struct{},
33 cwd, tgt := cwdAndTgt(path.Join(cwd, tgtOrig))
34 tgtFull := path.Join(cwd, tgt)
35 if _, ok := seen[tgtFull]; ok {
38 depPath := path.Join(cwd, RedoDir, tgt+DepSuffix)
39 fdDep, err := os.Open(depPath)
43 depInfo, err := depRead(fdDep)
48 seen[tgtFull] = struct{}{}
51 tgtRel := cwdMustRel(cwd, tgt)
53 if depInfo.build == BuildUUID {
55 CDebug, "ood: %s%s always, but already build",
56 strings.Repeat(". ", level), tgtOrig,
60 tracef(CDebug, "ood: %s%s always", strings.Repeat(". ", level), tgtOrig)
61 alwayses = append(alwayses, tgtRel)
65 for _, m := range depInfo.ifchanges {
73 if !includeSrc && isSrc(cwd, dep) {
77 depRel := cwdMustRel(cwd, dep)
78 if m, ok := deps[depRel]; ok {
79 m[tgtRel] = struct{}{}
81 m = map[string]struct{}{}
82 m[tgtRel] = struct{}{}
85 alwayses = append(alwayses,
86 collectDeps(cwd, dep, level+1, deps, includeSrc, seen)...)
92 func buildDependants(tgts []string) map[string]struct{} {
94 tracef(CDebug, "collecting deps")
95 seen := map[string]struct{}{}
96 deps := map[string]map[string]struct{}{}
97 collectDepsSeen := make(map[string]struct{})
98 for _, tgtInitial := range tgts {
99 for _, tgt := range collectDeps(Cwd, tgtInitial, 0, deps, false, collectDepsSeen) {
100 if tgt != tgtInitial {
101 seen[tgt] = struct{}{}
108 collectDepsSeen = nil
115 tracef(CDebug, "building %d alwayses: %v", len(seen), seen)
116 errs := make(chan error, len(seen))
118 okChecker := make(chan struct{})
120 for err := range errs {
121 ok = isOkRun(err) && ok
125 for tgt := range seen {
126 if err := runScript(tgt, errs, false, false); err != nil {
127 tracef(CErr, "always run error: %s, skipping dependants", err)
137 tracef(CDebug, "alwayses failed, skipping dependants")
141 queueSrc := make([]string, 0, len(seen))
142 for tgt := range seen {
143 queueSrc = append(queueSrc, tgt)
145 if len(queueSrc) == 0 {
150 tracef(CDebug, "checking %d dependant targets: %v", len(queueSrc), queueSrc)
151 queue := map[string]struct{}{}
152 for _, tgt := range queueSrc {
153 for dep := range deps[tgt] {
154 queue[dep] = struct{}{}
158 tracef(CDebug, "building %d dependant targets: %v", len(queue), queue)
159 errs = make(chan error, len(queue))
160 okChecker = make(chan struct{})
162 queueSrc = []string{}
164 for err := range errs {
165 ok = isOkRun(err) && ok
169 for tgt := range queue {
170 ood, err := isOODWithTrace(Cwd, tgt, 0, seen)
172 tracef(CErr, "dependant error: %s, skipping dependants", err)
178 if err := runScript(tgt, errs, false, false); err != nil {
179 tracef(CErr, "dependant error: %s, skipping dependants", err)
182 queueSrc = append(queueSrc, tgt)
183 seen[tgt] = struct{}{}
190 tracef(CDebug, "dependants failed, skipping them")
200 func ifchange(tgts []string, forced, traced bool) (bool, error) {
201 // only unique elements
202 m := make(map[string]struct{})
203 for _, t := range tgts {
208 tgts = append(tgts, t)
214 defer jsAcquire("ifchange exiting")
216 seen := buildDependants(tgts)
222 tracef(CDebug, "building %d targets: %v", len(tgts), tgts)
226 okChecker := make(chan struct{})
227 errs := make(chan error, len(tgts))
229 for err := range errs {
230 ok = isOkRun(err) && ok
234 for _, tgt := range tgts {
235 if _, ok := seen[tgt]; ok {
236 tracef(CDebug, "%s was already build as a dependant", tgt)
241 ood, err = isOODWithTrace(Cwd, tgt, 0, seen)
252 tracef(CDebug, "%s is source, not redoing", tgt)
255 if err = runScript(tgt, errs, forced, traced); err != nil {