/
options.go
219 lines (178 loc) · 4.04 KB
/
options.go
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// SPDX-License-Identifier: MIT
package preview
import (
"errors"
"io/fs"
"net/http"
"net/url"
"os"
"path/filepath"
"strings"
"time"
"github.com/fsnotify/fsnotify"
"github.com/issue9/localeutil"
"golang.org/x/text/message"
"github.com/caixw/blogit/v2"
"github.com/caixw/blogit/v2/internal/cmd/console"
)
// 启动服务的参数选项
type options struct {
p *message.Printer
// 项目的源码目录
// 如果为空,则会采用 ./ 作为默认值。
source string
srcFS fs.FS
// 项目编译后的输出地址
// 如果为空,则会要用 builder.Memory() 作为默认值。
dest string
destFS blogit.WritableFS
url string // 如果指定了此值,那么表示要替换 conf.yaml 中的 url
addr string
path string
// HTTPS 模式下的证书
cert string
key string
b *blogit.Builder
srv *http.Server
stop chan struct{}
}
func (o *options) sanitize() error {
o.stop = make(chan struct{}, 1)
if o.source == "" {
o.source = "./"
}
o.srcFS = os.DirFS(o.source)
if err := o.parseURL(); err != nil {
return err
}
if o.dest == "" {
o.destFS = blogit.MemoryFS()
} else {
o.destFS = blogit.DirFS(o.dest)
}
return nil
}
func (o *options) parseURL() error {
u, err := url.Parse(o.url)
if err != nil {
return err
}
o.addr = u.Port()
if o.addr == "" {
switch scheme := strings.ToLower(u.Scheme); scheme {
case "https":
o.addr = ":443"
case "http", "":
o.addr = ":80"
default:
return errors.New(o.p.Sprintf("preview unknown protocol", scheme))
}
} else {
o.addr = ":" + o.addr
}
o.path = u.Path
if o.path == "" || o.path[0] != '/' {
o.path = "/" + o.path
}
return nil
}
func (o *options) build(erro *console.Logger) (ok bool) {
if err := o.b.Rebuild(); err != nil {
if ls, ok := err.(localeutil.LocaleStringer); ok {
erro.Println(ls.LocaleString(o.p))
} else {
erro.Println(err)
}
return false
}
return true
}
func (o *options) watch(succ, info, erro *console.Logger) error {
if err := o.sanitize(); err != nil {
return err
}
o.b = &blogit.Builder{
Src: o.srcFS,
Dest: o.destFS,
Info: info.AsLogger(),
Preview: true,
BaseURL: o.url,
}
h := console.Visiter(o.b.Handler(erro.AsLogger()), o.p, succ, erro)
o.srv = &http.Server{Addr: o.addr, Handler: http.StripPrefix(o.path, h)}
go func() {
if err := o.serve(info); !errors.Is(err, http.ErrServerClosed) {
erro.Println(err)
}
o.stop <- struct{}{}
}()
o.build(erro)
watcher, err := o.getWatcher()
if err != nil {
return err
}
for {
select {
case event := <-watcher.Events:
if event.Op&fsnotify.Chmod == fsnotify.Chmod { // 忽略 CHMOD 事件
continue
}
if time.Since(o.b.Builded()) <= time.Second {
info.Println(o.p.Sprintf("preview ignore", event))
continue
}
info.Println(o.p.Sprintf("preview trigger event", event))
go func() {
if !o.build(erro) {
return
}
succ.Println(o.p.Sprintf("preview rebuild success"))
}()
case err := <-watcher.Errors:
erro.Println(err)
return err
case <-o.stop:
return http.ErrServerClosed
}
}
}
func (o *options) close() error { return o.srv.Close() }
func (o *options) serve(info *console.Logger) error {
info.Println(o.p.Sprintf("start server", o.addr))
if o.cert != "" && o.key != "" {
return o.srv.ListenAndServeTLS(o.cert, o.key)
}
return o.srv.ListenAndServe()
}
func (o *options) getWatcher() (*fsnotify.Watcher, error) {
paths := make([]string, 0, 10)
err := filepath.Walk(o.source, func(p string, d os.FileInfo, err error) error {
if err != nil {
return err
}
if isHidden(d.Name()) { // 忽略隐藏文件
if d.IsDir() {
return filepath.SkipDir
}
return nil
}
paths = append(paths, p)
return nil
})
if err != nil {
return nil, err
}
watcher, err := fsnotify.NewWatcher()
if err != nil {
return nil, err
}
for _, p := range paths {
if err := watcher.Add(p); err != nil {
return nil, err
}
}
return watcher, nil
}
func isHidden(name string) bool {
return len(name) > 2 && name[0] == '.' && name[1] != '/' && name[1] != os.PathSeparator
}