-/*
-goredo -- djb's redo implementation on pure Go
-Copyright (C) 2020-2021 Sergey Matveev <stargrave@stargrave.org>
-
-This program is free software: you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation, version 3 of the License.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program. If not, see <http://www.gnu.org/licenses/>.
-*/
+// goredo -- djb's redo implementation on pure Go
+// Copyright (C) 2020-2024 Sergey Matveev <stargrave@stargrave.org>
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, version 3 of the License.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see <http://www.gnu.org/licenses/>.
package main
import (
- "log"
- "os"
- "path"
- "path/filepath"
+ "errors"
+ "io/fs"
)
-func sourcesWalker(tgts []string) ([]string, error) {
- seen := make(map[string]struct{}, 1<<10)
+func sourcesWalker(
+ tgts []*Tgt,
+ seen map[string]struct{},
+ seenDeps map[string]struct{},
+ srcs map[string]*Tgt,
+) error {
for _, tgt := range tgts {
- tgtAbsPath, err := filepath.Abs(path.Join(Cwd, tgt))
- if err != nil {
- panic(err)
+ if _, ok := seenDeps[tgt.rel]; ok {
+ continue
}
- cwd, f := path.Split(path.Join(Cwd, tgt))
- fdDep, err := os.Open(path.Join(cwd, RedoDir, f+DepSuffix))
+ seenDeps[tgt.rel] = struct{}{}
+ dep, err := depRead(tgt)
if err != nil {
- if os.IsNotExist(err) {
+ if errors.Is(err, fs.ErrNotExist) {
continue
}
- return nil, err
+ return ErrLine(err)
}
- depInfo, err := depRead(fdDep)
- if err != nil {
- return nil, err
- }
- fdDep.Close()
- for _, m := range depInfo.ifchanges {
- depTgt := m["Target"]
- depTgtAbsPath, err := filepath.Abs(path.Join(cwd, depTgt))
- if err != nil {
- panic(err)
+ for _, ifchange := range dep.ifchanges {
+ if _, ok := seen[ifchange.tgt.rel]; ok {
+ continue
}
- if isSrc(cwd, depTgt) {
- seen[cwdMustRel(depTgtAbsPath)] = struct{}{}
- } else if depTgtAbsPath != tgtAbsPath {
- subSrcs, err := sourcesWalker([]string{cwdMustRel(depTgtAbsPath)})
- if err != nil {
- log.Fatalln(err)
- }
- for _, p := range subSrcs {
- seen[p] = struct{}{}
+ seen[ifchange.tgt.rel] = struct{}{}
+ if isSrc(ifchange.tgt) {
+ srcs[ifchange.tgt.rel] = ifchange.tgt
+ } else if ifchange.tgt.rel != tgt.rel {
+ if err := sourcesWalker(
+ []*Tgt{ifchange.tgt},
+ seen, seenDeps, srcs,
+ ); err != nil {
+ return err
}
}
}
}
- srcs := make([]string, 0, len(seen))
- for p := range seen {
- srcs = append(srcs, p)
- }
- return srcs, nil
+ return nil
}