Download link for 2.6.2 release

[goredo.git] / main.go

diff --git a/main.go b/main.go
index c579a0f6ec935414ff18815fa3eaf0aea62ebcb1..eb67c8069fa2534b645368e1504b8b6963bb7853 100644 (file)
--- a/main.go
+++ b/main.go
@@ -1,19 +1,17 @@
-/*
-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
 
@@ -21,9 +19,11 @@ import (
        "bufio"
        "bytes"
        "encoding/hex"
+       "errors"
        "flag"
        "fmt"
        "io"
+       "io/fs"
        "log"
        "os"
        "os/signal"
@@ -93,12 +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
@@ -187,7 +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 {
@@ -279,13 +290,12 @@ 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))
        }
        tgtsWasEmpty := len(tgts) == 0
-       if BuildUUIDStr := os.Getenv(EnvBuildUUID); BuildUUIDStr == "" {
-               IsTopRedo = true
+       if BuildUUIDStr == "" {
                BuildUUID = uuid.New()
                if tgtsWasEmpty {
                        tgts = append(tgts, NewTgt("all"))
@@ -382,9 +392,13 @@ func main() {
                var dos []string
                dos, err = whichdo(tgts[0])
                if err != nil {
-                       break
+                       if errors.Is(err, fs.ErrNotExist) {
+                               err = nil
+                               ok = false
+                       } else {
+                               break
+                       }
                }
-               sort.Strings(dos)
                for _, do := range dos {
                        fmt.Println(do)
                }
@@ -497,7 +511,7 @@ func main() {
                DepFixHashCache = make(map[string]Hash)
                err = depFix(Cwd)
        case CmdNameRedoInode:
-               var inode Inode
+               var inode *Inode
                for _, tgt := range tgts {
                        inode, err = inodeFromFileByPath(tgt.a)
                        if err != nil {
@@ -532,6 +546,7 @@ func main() {
                }
                var typ byte
                var chunk []byte
+               var inode Inode
                for len(data) > 0 {
                        typ, chunk, data, _ = chunkRead(data)
                        switch typ {
@@ -551,7 +566,7 @@ func main() {
                                }...)
                        case DepTypeIfchange:
                                name := string(chunk[InodeLen+HashLen:])
-                               meta := string(chunk[:InodeLen+HashLen])
+                               meta := chunk[:InodeLen+HashLen]
                                fields := []recfile.Field{
                                        {Name: "Type", Value: "ifchange"},
                                        {Name: "Target", Value: name},
@@ -559,9 +574,10 @@ func main() {
                                fields = append(fields, recfile.Field{
                                        Name: "Hash", Value: Hash(meta[InodeLen:]).String(),
                                })
-                               fields = append(fields, Inode(meta[:InodeLen]).RecfileFields()...)
+                               inode = Inode(meta[:][:InodeLen])
+                               fields = append(fields, inode.RecfileFields()...)
                                err = recfileWrite(w, fields...)
-                       case DepTypeIfchangeDummy:
+                       case DepTypeIfchangeNonex:
                                err = recfileWrite(w, []recfile.Field{
                                        {Name: "Type", Value: "ifchange"},
                                        {Name: "Target", Value: string(chunk)},