DepCwd string
ErrBadRecFormat = errors.New("invalid format of .rec")
+ InodeCache = make(map[string][]*Inode)
+ HashCache = make(map[string][]string)
)
func recfileWrite(fdDep io.StringWriter, fields ...recfile.Field) error {
if err != nil {
return err
}
- tracef(CDebug, "stamp: %s <- %s", fdDep.Name(), hex.EncodeToString(hsh))
+ tracef(CDebug, "stamp: %s <- %s", fdDep.Name(), hex.EncodeToString([]byte(hsh)))
return recfileWrite(
fdDep,
recfile.Field{Name: "Type", Value: DepTypeStamp},
- recfile.Field{Name: "Hash", Value: hex.EncodeToString(hsh)},
+ recfile.Field{Name: "Hash", Value: hex.EncodeToString([]byte(hsh))},
)
}
-func fileHash(fd *os.File) ([]byte, error) {
+func fileHash(fd *os.File) (string, error) {
h := blake3.New(32, nil)
if _, err := io.Copy(h, bufio.NewReader(fd)); err != nil {
- return nil, err
+ return "", err
}
- return h.Sum(nil), nil
+ return string(h.Sum(nil)), nil
}
-func depWrite(fdDep *os.File, cwd, tgt string, hsh []byte) error {
+func depWrite(fdDep *os.File, cwd string, tgt *Tgt, hsh string) error {
tracef(CDebug, "ifchange: %s <- %s", fdDep.Name(), tgt)
- fd, err := os.Open(path.Join(cwd, tgt))
+ fd, err := os.Open(tgt.a)
if err != nil {
return ErrLine(err)
}
if isDir {
return nil
}
- if hsh == nil {
+ if hsh == "" {
hsh, err = fileHash(fd)
if err != nil {
return ErrLine(err)
}
fields := []recfile.Field{
{Name: "Type", Value: DepTypeIfchange},
- {Name: "Target", Value: tgt},
- {Name: "Hash", Value: hex.EncodeToString(hsh)},
+ {Name: "Target", Value: tgt.RelTo(cwd)},
+ {Name: "Hash", Value: hex.EncodeToString([]byte(hsh))},
}
fields = append(fields, inode.RecfileFields()...)
return recfileWrite(fdDep, fields...)
}
-func depsWrite(fdDep *os.File, tgts []string) error {
+func depsWrite(fdDep *os.File, tgts []*Tgt) error {
if fdDep == nil {
tracef(CDebug, "no opened fdDep: %s", tgts)
return nil
}
var err error
+ var cwd string
for _, tgt := range tgts {
- tgtAbs := mustAbs(tgt)
- cwd := Cwd
+ cwd = Cwd
if DepCwd != "" && Cwd != DepCwd {
cwd = DepCwd
}
tgtDir := path.Join(cwd, DirPrefix)
- tgtRel := mustRel(tgtDir, tgtAbs)
- if _, errStat := os.Stat(tgt); errStat == nil {
- err = ErrLine(depWrite(fdDep, tgtDir, tgtRel, nil))
+ if _, errStat := os.Stat(tgt.a); errStat == nil {
+ err = ErrLine(depWrite(fdDep, tgtDir, tgt, ""))
} else {
+ tgtRel := tgt.RelTo(tgtDir)
tracef(CDebug, "ifchange: %s <- %s (non-existing)", fdDep.Name(), tgtRel)
fields := []recfile.Field{
{Name: "Type", Value: DepTypeIfchange},
}
type DepInfoIfchange struct {
- tgt string
+ tgt *Tgt
inode *Inode
- hash []byte
+ hash string
}
type DepInfo struct {
build string
always bool
- stamp []byte
- ifcreates []string
+ stamp string
+ ifcreates []*Tgt
ifchanges []DepInfoIfchange
}
var missingBuild = errors.New(".rec missing Build:")
-func depRead(pth string) (*DepInfo, error) {
- data, err := os.ReadFile(pth)
+func depRead(tgt *Tgt) (*DepInfo, error) {
+ data, err := os.ReadFile(tgt.Dep())
if err != nil {
return nil, err
}
if dep == "" {
return nil, ErrBadRecFormat
}
- depInfo.ifcreates = append(depInfo.ifcreates, dep)
+ depInfo.ifcreates = append(depInfo.ifcreates,
+ NewTgt(path.Join(tgt.h, dep)))
case DepTypeIfchange:
+ depRaw := m["Target"]
+ if depRaw == "" {
+ return nil, ErrBadRecFormat
+ }
inode, err := inodeFromRec(m)
if err != nil {
log.Print(err)
return nil, ErrBadRecFormat
}
- hsh := mustHexDecode(m["Hash"])
+ dep := NewTgt(path.Join(tgt.h, depRaw))
+
+ cachedFound := false
+ for _, cachedInode := range InodeCache[dep.a] {
+ if inode.Equals(cachedInode) {
+ inode = cachedInode
+ cachedFound = true
+ break
+ }
+ }
+ if InodeCache != nil && !cachedFound {
+ InodeCache[dep.a] = append(InodeCache[dep.a], inode)
+ }
+
+ hsh := string(mustHexDecode(m["Hash"]))
+ cachedFound = false
+ for _, cachedHash := range HashCache[dep.a] {
+ if hsh == cachedHash {
+ hsh = cachedHash
+ cachedFound = true
+ break
+ }
+ }
+ if HashCache != nil && !cachedFound {
+ HashCache[dep.a] = append(HashCache[dep.a], hsh)
+ }
+
depInfo.ifchanges = append(depInfo.ifchanges, DepInfoIfchange{
- tgt: m["Target"], inode: inode, hash: hsh,
+ tgt: dep, inode: inode, hash: hsh,
})
case DepTypeStamp:
hsh := m["Hash"]
if hsh == "" {
return nil, ErrBadRecFormat
}
- depInfo.stamp = mustHexDecode(hsh)
+ depInfo.stamp = string(mustHexDecode(hsh))
default:
return nil, ErrBadRecFormat
}
return &depInfo, nil
}
+func depReadOnlyIfchanges(pth string) (ifchanges []string, err error) {
+ data, err := os.ReadFile(pth)
+ if err != nil {
+ return
+ }
+ r := recfile.NewReader(bytes.NewReader(data))
+ var m map[string]string
+ for {
+ m, err = r.NextMap()
+ if err != nil {
+ if errors.Is(err, io.EOF) {
+ err = nil
+ break
+ }
+ return
+ }
+ if m["Type"] == DepTypeIfchange {
+ ifchanges = append(ifchanges, m["Target"])
+ }
+ }
+ return
+}
+
func depReadBuild(pth string) (string, error) {
fd, err := os.Open(pth)
if err != nil {