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|
//go:build dist
package main
import (
"archive/tar"
"compress/gzip"
"context"
"crypto/sha512"
_ "embed"
"encoding/hex"
"fmt"
"io"
"io/fs"
"log"
"os"
"os/exec"
"os/signal"
"path/filepath"
"runtime"
)
// getenv looks up an environment variable, and returns fallback if it is unset.
func getenv(key, fallback string) string {
if v, ok := os.LookupEnv(key); ok {
return v
}
return fallback
}
// mustRun runs a command with the current process's environment and panics
// on error or non-zero exit code.
func mustRun(ctx context.Context, name string, arg ...string) {
cmd := exec.CommandContext(ctx, name, arg...)
cmd.Stdin, cmd.Stdout, cmd.Stderr = os.Stdin, os.Stdout, os.Stderr
if err := cmd.Run(); err != nil {
panic(err)
}
}
//go:embed comp/_hakurei
var comp []byte
func main() {
log.SetFlags(0)
log.SetPrefix("")
verbose := os.Getenv("VERBOSE") != ""
runTests := os.Getenv("HAKUREI_DIST_MAKE") == ""
version := getenv("HAKUREI_VERSION", "untagged")
prefix := getenv("PREFIX", "/usr")
destdir := getenv("DESTDIR", "dist")
if verbose {
log.Println()
}
if err := os.MkdirAll(destdir, 0755); err != nil {
log.Fatal(err)
}
s, err := os.MkdirTemp(destdir, ".dist.*")
if err != nil {
log.Fatal(err)
}
defer func() {
var code int
if err = os.RemoveAll(s); err != nil {
code = 1
log.Println(err)
}
if r := recover(); r != nil {
code = 1
log.Println(r)
}
os.Exit(code)
}()
ctx, cancel := signal.NotifyContext(context.Background(), os.Interrupt)
defer cancel()
verboseFlag := "-v"
if !verbose {
verboseFlag = "-buildvcs=false"
}
log.Printf("Building hakurei for %s/%s.", runtime.GOOS, runtime.GOARCH)
mustRun(ctx, "go", "generate", "./...")
mustRun(
ctx, "go", "build",
"-trimpath",
verboseFlag, "-o", s,
"-ldflags=-s -w "+
"-buildid= -linkmode external -extldflags=-static "+
"-X hakurei.app/internal/info.buildVersion="+version+" "+
"-X hakurei.app/internal/info.hakureiPath="+prefix+"/bin/hakurei "+
"-X hakurei.app/internal/info.hsuPath="+prefix+"/bin/hsu "+
"-X main.hakureiPath="+prefix+"/bin/hakurei",
"./...",
)
log.Println()
if runTests {
log.Println("##### Testing Hakurei.")
mustRun(
ctx, "go", "test",
"-ldflags=-buildid= -linkmode external -extldflags=-static",
"./...",
)
log.Println()
}
log.Println("##### Creating distribution.")
const suffix = ".tar.gz"
distName := "hakurei-" + version + "-" + runtime.GOARCH
var f *os.File
if f, err = os.OpenFile(
filepath.Join(s, distName+suffix),
os.O_CREATE|os.O_EXCL|os.O_WRONLY,
0644,
); err != nil {
panic(err)
}
defer func() {
if f == nil {
return
}
if err = f.Close(); err != nil {
log.Println(err)
}
}()
h := sha512.New()
gw, _ := gzip.NewWriterLevel(io.MultiWriter(f, h), gzip.BestCompression)
tw := tar.NewWriter(gw)
mustWriteHeader := func(name string, size int64, mode os.FileMode) {
header := tar.Header{
Name: filepath.Join(distName, name),
Size: size,
Mode: int64(mode),
Uname: "root",
Gname: "root",
}
if mode&os.ModeDir != 0 {
header.Typeflag = tar.TypeDir
fmt.Printf("%s %s\n", mode, name)
} else {
header.Typeflag = tar.TypeReg
fmt.Printf("%s %s (%d bytes)\n", mode, name, size)
}
if err = tw.WriteHeader(&header); err != nil {
panic(err)
}
}
mustWriteFile := func(name string, data []byte, mode os.FileMode) {
mustWriteHeader(name, int64(len(data)), mode)
if mode&os.ModeDir != 0 {
return
}
if _, err = tw.Write(data); err != nil {
panic(err)
}
}
mustWriteFromPath := func(dst, src string, mode os.FileMode) {
var r *os.File
if r, err = os.Open(src); err != nil {
panic(err)
}
var fi os.FileInfo
if fi, err = r.Stat(); err != nil {
_ = r.Close()
panic(err)
}
if mode == 0 {
mode = fi.Mode()
}
mustWriteHeader(dst, fi.Size(), mode)
if _, err = io.Copy(tw, r); err != nil {
_ = r.Close()
panic(err)
} else if err = r.Close(); err != nil {
panic(err)
}
}
mustWriteFile(".", nil, fs.ModeDir|0755)
mustWriteFile("comp/", nil, os.ModeDir|0755)
mustWriteFile("comp/_hakurei", comp, 0644)
mustWriteFile("install.sh", []byte(`#!/bin/sh -e
cd "$(dirname -- "$0")" || exit 1
install -vDm0755 "bin/hakurei" "${DESTDIR}`+prefix+`/bin/hakurei"
install -vDm0755 "bin/sharefs" "${DESTDIR}`+prefix+`/bin/sharefs"
install -vDm4511 "bin/hsu" "${DESTDIR}`+prefix+`/bin/hsu"
if [ ! -f "${DESTDIR}/etc/hsurc" ]; then
install -vDm0400 "hsurc.default" "${DESTDIR}/etc/hsurc"
fi
install -vDm0644 "comp/_hakurei" "${DESTDIR}`+prefix+`/share/zsh/site-functions/_hakurei"
`), 0755)
mustWriteFromPath("README.md", "README.md", 0)
mustWriteFile("hsurc.default", []byte("1000 0"), 0400)
mustWriteFromPath("bin/hsu", filepath.Join(s, "hsu"), 04511)
for _, name := range []string{
"hakurei",
"sharefs",
} {
mustWriteFromPath(
filepath.Join("bin", name),
filepath.Join(s, name),
0,
)
}
if err = tw.Close(); err != nil {
panic(err)
} else if err = gw.Close(); err != nil {
panic(err)
} else if err = f.Close(); err != nil {
panic(err)
}
f = nil
if err = os.WriteFile(
filepath.Join(destdir, distName+suffix+".sha512"),
append(hex.AppendEncode(nil, h.Sum(nil)), " "+distName+suffix+"\n"...),
0644,
); err != nil {
panic(err)
}
if err = os.Rename(
filepath.Join(s, distName+suffix),
filepath.Join(destdir, distName+suffix),
); err != nil {
panic(err)
}
}
|
