X-Git-Url: http://www.git.cypherpunks.ru/?a=blobdiff_plain;f=main.go;h=eb67c8069fa2534b645368e1504b8b6963bb7853;hb=HEAD;hp=a79d2b130dd9679b6006682553e54c245fe29b35;hpb=9d7519924e635be8f99cd0c7d12f36b06be6f5ef;p=goredo.git

diff --git a/main.go b/main.go
index a79d2b1..eb67c80 100644
--- a/main.go
+++ b/main.go
@@ -1,30 +1,29 @@
-/*
-goredo -- djb's redo implementation on pure Go
-Copyright (C) 2020-2023 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 (
 	"bufio"
 	"bytes"
-	"crypto/rand"
+	"encoding/hex"
 	"errors"
 	"flag"
 	"fmt"
 	"io"
+	"io/fs"
 	"log"
 	"os"
 	"os/signal"
@@ -34,6 +33,7 @@ import (
 	"strconv"
 	"syscall"
 
+	"github.com/google/uuid"
 	"go.cypherpunks.ru/recfile"
 	"golang.org/x/sys/unix"
 )
@@ -44,6 +44,7 @@ const (
 	CmdNameRedoAffects  = "redo-affects"
 	CmdNameRedoAlways   = "redo-always"
 	CmdNameRedoCleanup  = "redo-cleanup"
+	CmdNameRedoDep2Rec  = "redo-dep2rec"
 	CmdNameRedoDepFix   = "redo-depfix"
 	CmdNameRedoDot      = "redo-dot"
 	CmdNameRedoIfchange = "redo-ifchange"
@@ -59,7 +60,7 @@ const (
 
 var (
 	Cwd       string
-	BuildUUID string
+	BuildUUID uuid.UUID
 	IsTopRedo bool // is it the top redo instance
 	UmaskCur  int
 )
@@ -92,12 +93,23 @@ func main() {
 
 	var symlinks *bool
 	cmdName := CmdName()
-	if cmdName == "goredo" {
+	if cmdName == CmdNameGoredo {
 		symlinks = flag.Bool("symlinks", false, "create necessary symlinks in current directory")
 	}
 
 	flag.Usage = func() { usage(os.Args[0]) }
-	flag.Parse()
+
+	BuildUUIDStr := os.Getenv(EnvBuildUUID)
+	IsTopRedo = BuildUUIDStr == ""
+
+	var args []string
+	if IsTopRedo {
+		flag.Parse()
+		args = flag.Args()
+	} else {
+		args = os.Args[1:]
+	}
+
 	if *warranty {
 		fmt.Println(Warranty)
 		return
@@ -113,6 +125,7 @@ func main() {
 			CmdNameRedoAffects,
 			CmdNameRedoAlways,
 			CmdNameRedoCleanup,
+			CmdNameRedoDep2Rec,
 			CmdNameRedoDepFix,
 			CmdNameRedoDot,
 			CmdNameRedoIfchange,
@@ -185,7 +198,7 @@ func main() {
 	LogLock = os.Getenv(EnvLogLock) == "1"
 	LogJS = os.Getenv(EnvLogJS) == "1"
 	if Debug || os.Getenv(EnvLogPid) == "1" {
-		MyPid = os.Getpid()
+		MyPID = os.Getpid()
 	}
 	var traced bool
 	if flagTraceAll != nil && *flagTraceAll {
@@ -277,27 +290,22 @@ func main() {
 		fdDep = mustParseFd(v, EnvDepFd)
 	}
 
-	tgts := make([]*Tgt, 0, len(flag.Args()))
-	for _, arg := range flag.Args() {
+	tgts := make([]*Tgt, 0, len(args))
+	for _, arg := range args {
 		tgts = append(tgts, NewTgt(arg))
 	}
-	BuildUUID = os.Getenv(EnvBuildUUID)
 	tgtsWasEmpty := len(tgts) == 0
-	if BuildUUID == "" {
-		IsTopRedo = true
-		raw := new([16]byte)
-		if _, err = io.ReadFull(rand.Reader, raw[:]); err != nil {
-			log.Fatal(err)
-		}
-		raw[6] = (raw[6] & 0x0F) | uint8(4<<4) // version 4
-		BuildUUID = fmt.Sprintf(
-			"%x-%x-%x-%x-%x",
-			raw[0:4], raw[4:6], raw[6:8], raw[8:10], raw[10:],
-		)
+	if BuildUUIDStr == "" {
+		BuildUUID = uuid.New()
 		if tgtsWasEmpty {
 			tgts = append(tgts, NewTgt("all"))
 		}
 		tracef(CDebug, "inode-trust: %s", InodeTrust)
+	} else {
+		BuildUUID, err = uuid.Parse(BuildUUIDStr)
+		if err != nil {
+			log.Fatal(err)
+		}
 	}
 
 	if cmdName == CmdNameRedo {
@@ -320,12 +328,9 @@ func main() {
 
 	ok := true
 	err = nil
-	tracef(
-		CDebug, "[%s] run: %s %s cwd:%s dirprefix:%s",
-		BuildUUID, cmdName, tgts, Cwd, DirPrefix,
-	)
+	tracef(CDebug, "[%s] run: %s %s cwd:%s dirprefix:%s",
+		BuildUUID, cmdName, tgts, Cwd, DirPrefix)
 
-CmdSwitch:
 	switch cmdName {
 	case CmdNameRedo:
 		for _, tgt := range tgts {
@@ -343,20 +348,22 @@ CmdSwitch:
 		if fdDep == nil {
 			log.Fatalln("no", EnvDepFd)
 		}
+		fdDepW := bufio.NewWriter(fdDep)
 		for _, tgt := range tgts {
-			err = ifcreate(fdDep, tgt.RelTo(path.Join(Cwd, DirPrefix)))
+			err = ifcreate(fdDepW, fdDep.Name(), tgt.RelTo(path.Join(Cwd, DirPrefix)))
 			if err != nil {
 				break
 			}
 		}
+		err = fdDepW.Flush()
 	case CmdNameRedoAlways:
 		if fdDep == nil {
 			log.Fatalln("no", EnvDepFd)
 		}
-		err = always(fdDep)
+		err = always(fdDep, fdDep.Name())
 	case CmdNameRedoCleanup:
 		for _, what := range tgts {
-			err = cleanupWalker(Cwd, what.t)
+			err = cleanupWalker(Cwd, path.Base(what.a))
 			if err != nil {
 				break
 			}
@@ -367,7 +374,12 @@ CmdSwitch:
 		if fdDep == nil {
 			log.Fatalln("no", EnvDepFd)
 		}
-		err = stamp(fdDep, os.Stdin)
+		var hsh Hash
+		hsh, err = fileHash(os.Stdin)
+		if err != nil {
+			break
+		}
+		err = stamp(fdDep, fdDep.Name(), hsh)
 	case CmdNameRedoLog:
 		if len(tgts) != 1 {
 			log.Fatal("single target expected")
@@ -377,52 +389,18 @@ CmdSwitch:
 		if len(tgts) != 1 {
 			log.Fatal("single target expected")
 		}
-		var fdTmp *os.File
-		fdTmp, err = os.CreateTemp("", "whichdo")
-		if err != nil {
-			err = ErrLine(err)
-			break
-		}
-		err = ErrLine(os.Remove(fdTmp.Name()))
+		var dos []string
+		dos, err = whichdo(tgts[0])
 		if err != nil {
-			break
-		}
-		tgt := tgts[0]
-		var doFile string
-		var upLevels int
-		doFile, upLevels, err = findDo(fdTmp, tgt.h, tgt.t)
-		if err != nil {
-			err = ErrLine(err)
-			break
-		}
-		_, err = fdTmp.Seek(0, io.SeekStart)
-		if err != nil {
-			err = ErrLine(err)
-			break
-		}
-		r := recfile.NewReader(fdTmp)
-		for {
-			m, err := r.NextMap()
-			if err != nil {
-				if errors.Is(err, io.EOF) {
-					break
-				}
-				err = ErrLine(err)
-				break CmdSwitch
-			}
-			fmt.Println(cwdMustRel(tgt.h, m["Target"]))
-		}
-		if doFile == "" {
-			ok = false
-		} else {
-			p := make([]string, 0, upLevels+2)
-			p = append(p, tgt.h)
-			for i := 0; i < upLevels; i++ {
-				p = append(p, "..")
+			if errors.Is(err, fs.ErrNotExist) {
+				err = nil
+				ok = false
+			} else {
+				break
 			}
-			p = append(p, doFile)
-			rel := mustRel(Cwd, path.Join(p...))
-			fmt.Println(rel)
+		}
+		for _, do := range dos {
+			fmt.Println(do)
 		}
 	case CmdNameRedoTargets:
 		raws := make([]string, 0, len(tgts))
@@ -455,7 +433,7 @@ CmdSwitch:
 			}
 			deps := make(map[string]map[string]*Tgt)
 			for _, tgt := range tgtsKnown {
-				collectDeps(NewTgt(tgt), 0, deps, true, make(map[string]struct{}))
+				collectDeps(NewTgt(tgt), 0, deps, true)
 			}
 			seen := make(map[string]*Tgt)
 			for _, tgt := range tgts {
@@ -529,6 +507,8 @@ CmdSwitch:
 			fmt.Println(src)
 		}
 	case CmdNameRedoDepFix:
+		IfchangeCache = nil
+		DepFixHashCache = make(map[string]Hash)
 		err = depFix(Cwd)
 	case CmdNameRedoInode:
 		var inode *Inode
@@ -546,6 +526,68 @@ CmdSwitch:
 				break
 			}
 		}
+	case CmdNameRedoDep2Rec:
+		var data []byte
+		data, err = os.ReadFile(tgts[0].a)
+		if err != nil {
+			break
+		}
+		var build uuid.UUID
+		build, data, err = depHeadParse(data)
+		if err != nil {
+			break
+		}
+		w := bufio.NewWriter(os.Stdout)
+		err = recfileWrite(w, []recfile.Field{
+			{Name: "Build", Value: build.String()},
+		}...)
+		if err != nil {
+			break
+		}
+		var typ byte
+		var chunk []byte
+		var inode Inode
+		for len(data) > 0 {
+			typ, chunk, data, _ = chunkRead(data)
+			switch typ {
+			case DepTypeAlways:
+				err = recfileWrite(w, []recfile.Field{
+					{Name: "Type", Value: "always"},
+				}...)
+			case DepTypeStamp:
+				err = recfileWrite(w, []recfile.Field{
+					{Name: "Type", Value: "stamp"},
+					{Name: "Hash", Value: hex.EncodeToString(chunk)},
+				}...)
+			case DepTypeIfcreate:
+				err = recfileWrite(w, []recfile.Field{
+					{Name: "Type", Value: "ifcreate"},
+					{Name: "Target", Value: string(chunk)},
+				}...)
+			case DepTypeIfchange:
+				name := string(chunk[InodeLen+HashLen:])
+				meta := chunk[:InodeLen+HashLen]
+				fields := []recfile.Field{
+					{Name: "Type", Value: "ifchange"},
+					{Name: "Target", Value: name},
+				}
+				fields = append(fields, recfile.Field{
+					Name: "Hash", Value: Hash(meta[InodeLen:]).String(),
+				})
+				inode = Inode(meta[:][:InodeLen])
+				fields = append(fields, inode.RecfileFields()...)
+				err = recfileWrite(w, fields...)
+			case DepTypeIfchangeNonex:
+				err = recfileWrite(w, []recfile.Field{
+					{Name: "Type", Value: "ifchange"},
+					{Name: "Target", Value: string(chunk)},
+				}...)
+			}
+			if err != nil {
+				break
+			}
+		}
+		err = w.Flush()
 	default:
 		log.Fatalln("unknown command", cmdName)
 	}