From 76d9e148528adc42eefac4244ddb21bb3784b0c3 Mon Sep 17 00:00:00 2001
From: kuiki <kuiki@kuiki.cn>
Date: Wed, 13 Mar 2019 16:10:12 +0800
Subject: [PATCH] =?UTF-8?q?=E6=B7=BB=E5=8A=A0modtime?=
MIME-Version: 1.0
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---
 modtime/modtime.go | 86 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 86 insertions(+)
 create mode 100644 modtime/modtime.go

diff --git a/modtime/modtime.go b/modtime/modtime.go
new file mode 100644
index 0000000..74a646e
--- /dev/null
+++ b/modtime/modtime.go
@@ -0,0 +1,86 @@
+package main
+
+import (
+	"fmt"
+	"log"
+	"os"
+	"path"
+	"strings"
+	"time"
+)
+
+var (
+	timeLocation *time.Location
+)
+
+func init() {
+	// 初始化时区
+	var err error
+	timeLocation, err = time.LoadLocation("Local")
+	if err != nil {
+		log.Fatalf("LoadLocation fail: %v", err)
+	}
+}
+
+func main() {
+	fmt.Println("start processing")
+	pwd, err := os.Open(".")
+	if err != nil {
+		log.Fatalf("os.Open . error: %v", err)
+	}
+	defer pwd.Close()
+	pwdInfo, err := pwd.Stat()
+	if err != nil {
+		log.Fatalf("pwd.Stat error: %v", err)
+	}
+	processDir(pwdInfo, pwd, []string{})
+}
+
+func processDir(pwdInfo os.FileInfo, pwd *os.File, paths []string) {
+	fmt.Println("processing dir ", pwdInfo.Name())
+	if !pwdInfo.IsDir() {
+		log.Fatalf("input file %s is not a Dir", pwdInfo.Name())
+	}
+	if pwd == nil {
+		var err error
+		path := strings.Join(paths, "/")
+		pwd, err = os.Open(path + "/" + pwdInfo.Name())
+		if err != nil {
+			log.Fatalf("os.Open %v %s error: %v", paths, pwdInfo.Name(), err)
+		}
+		defer pwd.Close()
+	}
+	fileInfos, err := pwd.Readdir(0)
+	if err != nil {
+		log.Fatalf("pwd %s Readdir error: %v", pwd.Name(), err)
+	}
+	for _, fileInfo := range fileInfos {
+		if fileInfo.IsDir() {
+			processDir(fileInfo, nil, append(paths, pwdInfo.Name()))
+		} else {
+			ext := path.Ext(fileInfo.Name())
+			switch ext {
+			case ".mp4":
+				processMP4(fileInfo, append(paths, pwdInfo.Name()))
+			}
+		}
+	}
+}
+
+func processMP4(fileInfo os.FileInfo, paths []string) {
+	filename := fileInfo.Name()
+	path := strings.Join(paths, "/")
+	if path != "." {
+		filename = path + "/" + filename
+	}
+	t, err := time.ParseInLocation("20060102150405", strings.Split(fileInfo.Name(), "-")[1][:14], timeLocation)
+	if err != nil {
+		log.Println("Parse time fail from filename ", fileInfo.Name())
+		return
+	}
+	fmt.Println("processing file ", filename, t.Format(time.RFC3339))
+	err = os.Chtimes(filename, t, t)
+	if err != nil {
+		log.Printf("Chtimes file %s fail: %v\n", filename, err)
+	}
+}