1 // goredo -- djb's redo implementation on pure Go
2 // Copyright (C) 2020-2024 Sergey Matveev <stargrave@stargrave.org>
4 // This program is free software: you can redistribute it and/or modify
5 // it under the terms of the GNU General Public License as published by
6 // the Free Software Foundation, version 3 of the License.
8 // This program is distributed in the hope that it will be useful,
9 // but WITHOUT ANY WARRANTY; without even the implied warranty of
10 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 // GNU General Public License for more details.
13 // You should have received a copy of the GNU General Public License
14 // along with this program. If not, see <http://www.gnu.org/licenses/>.
25 TgtCache = make(map[string]*Tgt)
26 TgtCacheM sync.RWMutex
29 func mustAbs(pth string) string {
30 pth, err := filepath.Abs(pth)
37 func mustRel(basepath, targpath string) string {
38 pth, err := filepath.Rel(basepath, targpath)
45 func cwdMustRel(paths ...string) string {
46 return mustRel(Cwd, path.Join(paths...))
49 func pathSplit(a string) (h, t string) {
58 a string // absolute path
59 rel string // relative to Cwd
60 dep string // path to dependency file
63 func NewTgt(tgt string) *Tgt {
75 dep: path.Join(h, RedoDir, t+DepSuffix),
83 func (tgt *Tgt) String() string {
87 func (tgt *Tgt) RelTo(cwd string) string {
88 return mustRel(cwd, tgt.a)