realize/watcher/watcher.go

347 lines
9.8 KiB
Go

package cli
import (
"errors"
"fmt"
"github.com/fsnotify/fsnotify"
"log"
"math/big"
"os"
"os/signal"
"path/filepath"
"strings"
"sync"
"syscall"
"time"
)
// Watching method is the main core. It manages the livereload and the watching
func (p *Project) watching() {
var wr sync.WaitGroup
var watcher *fsnotify.Watcher
channel, exit := make(chan bool, 1), make(chan bool, 1)
p.path = p.Path
watcher, err := fsnotify.NewWatcher()
defer func() {
wg.Done()
}()
if err != nil {
log.Fatalln(p.pname(p.Name, 2), ":", p.Red.Bold(err.Error()))
return
}
p.cmd(exit)
if p.walks(watcher) != nil {
log.Fatalln(p.pname(p.Name, 2), ":", p.Red.Bold(err.Error()))
return
}
go p.routines(channel, &wr)
p.LastChangedOn = time.Now().Truncate(time.Second)
// waiting for an event
for {
select {
case event := <-watcher.Events:
if time.Now().Truncate(time.Second).After(p.LastChangedOn) {
if event.Op&fsnotify.Chmod == fsnotify.Chmod {
continue
}
if _, err := os.Stat(event.Name); err == nil {
var ext string
if index := strings.Index(filepath.Ext(event.Name), "_"); index == -1 {
ext = filepath.Ext(event.Name)
} else {
ext = filepath.Ext(event.Name)[0:index]
}
i := strings.Index(event.Name, filepath.Ext(event.Name))
file := event.Name[:i] + ext
path := filepath.Dir(event.Name[:i])
if event.Name[:i] != "" && inArray(ext, p.Watcher.Exts) {
p.Buffer.StdLog = append(p.Buffer.StdLog, BufferOut{Time: time.Now(), Text: strings.ToUpper(ext[1:]) + " changed " + file})
go func() {
p.parent.Sync <- "sync"
}()
log.Println(p.pname(p.Name, 4), ":", p.Magenta.Bold(strings.ToUpper(ext[1:])+" changed"), p.Magenta.Bold(file))
// stop and run again
if p.Run {
close(channel)
channel = make(chan bool)
}
// handle multiple errors, need a better way
p.fmt(file)
p.test(path)
p.generate(path)
go p.routines(channel, &wr)
p.LastChangedOn = time.Now().Truncate(time.Second)
}
}
}
case err := <-watcher.Errors:
log.Println(p.Red.Bold(err.Error()))
case <-exit:
return
}
}
}
// Install calls an implementation of "go install"
func (p *Project) install() {
if p.Bin {
start := time.Now()
log.Println(p.pname(p.Name, 1), ":", "Installing..")
if stream, err := p.goInstall(); err != nil {
msg := fmt.Sprintln(p.pname(p.Name, 2), ":", p.Red.Bold("Go Install"), p.Red.Regular(err.Error()))
out := BufferOut{Time: time.Now(), Text: err.Error(), Type: "Go Install", Stream: stream}
p.print("error", out, msg, stream)
} else {
msg := fmt.Sprintln(p.pname(p.Name, 5), ":", p.Green.Regular("Installed")+" after", p.Magenta.Regular(big.NewFloat(float64(time.Since(start).Seconds())).Text('f', 3), " s"))
out := BufferOut{Time: time.Now(), Text: "Installed"}
p.print("log", out, msg, stream)
}
p.sync()
}
return
}
// Install calls an implementation of "go run"
func (p *Project) run(channel chan bool, wr *sync.WaitGroup) {
if p.Run {
start := time.Now()
runner := make(chan bool, 1)
log.Println(p.pname(p.Name, 1), ":", "Running..")
go p.goRun(channel, runner, wr)
for {
select {
case <-runner:
msg := fmt.Sprintln(p.pname(p.Name, 5), ":", p.Green.Regular("Has been run")+" after", p.Magenta.Regular(big.NewFloat(float64(time.Since(start).Seconds())).Text('f', 3), " s"))
out := BufferOut{Time: time.Now(), Text: "Has been run"}
p.print("log", out, msg, "")
return
}
}
}
}
// Build calls an implementation of the "go build"
func (p *Project) build() {
if p.Build {
start := time.Now()
log.Println(p.pname(p.Name, 1), ":", "Building..")
if stream, err := p.goBuild(); err != nil {
msg := fmt.Sprintln(p.pname(p.Name, 2), ":", p.Red.Bold("Go Build"), p.Red.Regular(err.Error()))
out := BufferOut{Time: time.Now(), Text: err.Error(), Type: "Go Build", Stream: stream}
p.print("error", out, msg, stream)
} else {
msg := fmt.Sprintln(p.pname(p.Name, 5), ":", p.Green.Regular("Builded")+" after", p.Magenta.Regular(big.NewFloat(float64(time.Since(start).Seconds())).Text('f', 3), " s"))
out := BufferOut{Time: time.Now(), Text: "Builded"}
p.print("log", out, msg, stream)
}
p.sync()
}
return
}
// Fmt calls an implementation of the "go fmt"
func (p *Project) fmt(path string) error {
defer func() {
p.sync()
}()
if p.Fmt {
if stream, err := p.goTools(p.base, "gofmt", "-s", "-w", "-e", path); err != nil {
msg := fmt.Sprintln(p.pname(p.Name, 2), ":", p.Red.Bold("Go Fmt"), p.Red.Regular("there are some errors in"), ":", p.Magenta.Bold(path))
out := BufferOut{Time: time.Now(), Text: "there are some errors in", Path: path, Type: "Go Fmt", Stream: stream}
p.print("error", out, msg, stream)
return err
}
}
return nil
}
// Generate calls an implementation of the "go generate"
func (p *Project) generate(path string) error {
defer func() {
p.sync()
}()
if p.Generate {
if stream, err := p.goTools(path, "go", "generate"); err != nil {
msg := fmt.Sprintln(p.pname(p.Name, 2), ":", p.Red.Bold("Go Generate"), p.Red.Regular("there are some errors in"), ":", p.Magenta.Bold(path))
out := BufferOut{Time: time.Now(), Text: "there are some errors in", Path: path, Type: "Go Generate", Stream: stream}
p.print("error", out, msg, stream)
return err
}
}
return nil
}
// Test calls an implementation of the "go test"
func (p *Project) test(path string) error {
defer func() {
p.sync()
}()
if p.Test {
if stream, err := p.goTools(path, "go", "test"); err != nil {
msg := fmt.Sprintln(p.pname(p.Name, 2), ":", p.Red.Bold("Go Test"), p.Red.Regular("there are some errors in "), ":", p.Magenta.Bold(path))
out := BufferOut{Time: time.Now(), Text: "there are some errors in", Path: path, Type: "Go Test", Stream: stream}
p.print("error", out, msg, stream)
return err
}
}
return nil
}
// Cmd calls an wrapper for execute the commands after/before
func (p *Project) cmd(exit chan bool) {
c := make(chan os.Signal, 2)
signal.Notify(c, os.Interrupt, syscall.SIGTERM)
cast := func(commands []string) {
if errs := p.cmds(commands); errs != nil {
for _, err := range errs {
msg := fmt.Sprintln(p.pname(p.Name, 2), ":", p.Red.Bold(err))
out := BufferOut{Time: time.Now(), Text: err, Type: "After/Before"}
p.print("error", out, msg, "")
}
}
}
if len(p.Watcher.Before) > 0 {
cast(p.Watcher.Before)
}
go func() {
for {
select {
case <-c:
if len(p.Watcher.After) > 0 {
cast(p.Watcher.After)
}
close(exit)
}
}
}()
}
// Walks the file tree of a project
func (p *Project) walks(watcher *fsnotify.Watcher) error {
var files, folders int64
wd, _ := os.Getwd()
walk := func(path string, info os.FileInfo, err error) error {
if !p.ignore(path) {
if (info.IsDir() && len(filepath.Ext(path)) == 0 && !strings.HasPrefix(path, ".")) && !strings.Contains(path, "/.") || (inArray(filepath.Ext(path), p.Watcher.Exts)) {
if p.Watcher.Preview {
log.Println(p.pname(p.Name, 1), ":", path)
}
if err = watcher.Add(path); err != nil {
return filepath.SkipDir
}
if inArray(filepath.Ext(path), p.Watcher.Exts) {
files++
p.fmt(path)
} else {
folders++
p.generate(path)
p.test(path)
}
}
}
return nil
}
if p.path == "." || p.path == "/" {
p.base = wd
p.path = p.Wdir()
} else if filepath.IsAbs(p.path) {
p.base = p.path
} else {
p.base = filepath.Join(wd, p.path)
}
for _, dir := range p.Watcher.Paths {
base := filepath.Join(p.base, dir)
if _, err := os.Stat(base); err == nil {
if err := filepath.Walk(base, walk); err != nil {
log.Println(p.Red.Bold(err.Error()))
}
} else {
return errors.New(base + " path doesn't exist")
}
}
log.Println(p.pname(p.Name, 1), ":", p.Blue.Bold("Watching"), p.Magenta.Bold(files), "file/s", p.Magenta.Bold(folders), "folder/s")
return nil
}
// Ignore and validate a path
func (p *Project) ignore(str string) bool {
for _, v := range p.Watcher.Ignore {
if strings.Contains(str, filepath.Join(p.base, v)) {
return true
}
}
return false
}
// Routines launches the toolchain run, build, install
func (p *Project) routines(channel chan bool, wr *sync.WaitGroup) {
p.install()
p.build()
wr.Add(1)
go p.run(channel, wr)
wr.Wait()
}
// Defines the colors scheme for the project name
func (p *Project) pname(name string, color int) string {
switch color {
case 1:
name = p.Yellow.Regular("[") + strings.ToUpper(name) + p.Yellow.Regular("]")
break
case 2:
name = p.Yellow.Regular("[") + p.Red.Bold(strings.ToUpper(name)) + p.Yellow.Regular("]")
break
case 3:
name = p.Yellow.Regular("[") + p.Blue.Bold(strings.ToUpper(name)) + p.Yellow.Regular("]")
break
case 4:
name = p.Yellow.Regular("[") + p.Magenta.Bold(strings.ToUpper(name)) + p.Yellow.Regular("]")
break
case 5:
name = p.Yellow.Regular("[") + p.Green.Bold(strings.ToUpper(name)) + p.Yellow.Regular("]")
break
}
return name
}
// Print on files
func (p *Project) print(t string, o BufferOut, msg string, stream string) {
switch t {
case "out":
p.Buffer.StdOut = append(p.Buffer.StdOut, o)
if p.File.Streams {
f := p.Create(p.base, p.parent.Resources.Output)
t := time.Now()
if _, err := f.WriteString(t.Format("2006-01-02 15:04:05") + " : " + o.Text + "\r\n"); err != nil {
p.Fatal(err, "")
}
}
case "log":
p.Buffer.StdLog = append(p.Buffer.StdLog, o)
if p.File.Logs {
f := p.Create(p.base, p.parent.Resources.Log)
t := time.Now()
if _, err := f.WriteString(t.Format("2006-01-02 15:04:05") + " : " + o.Text + "\r\n"); err != nil {
p.Fatal(err, "")
}
}
case "error":
p.Buffer.StdErr = append(p.Buffer.StdErr, o)
if p.File.Errors {
f := p.Create(p.base, p.parent.Resources.Log)
t := time.Now()
if _, err := f.WriteString(t.Format("2006-01-02 15:04:05") + " : " + o.Text + "\r\n"); err != nil {
p.Fatal(err, "")
}
}
}
log.Print(msg)
if stream != "" {
fmt.Println(stream)
}
}