From 71260d56fac54d1725b8970c3acbe65c41dd3a88 Mon Sep 17 00:00:00 2001
From: chai2010 <chaishushan@gmail.com>
Date: Mon, 1 Feb 2016 15:10:42 +0800
Subject: [PATCH] ingore gitbook data-revision

---
 Makefile             |  2 ++
 fix-data-revision.go | 82 ++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 84 insertions(+)
 create mode 100644 fix-data-revision.go

diff --git a/Makefile b/Makefile
index 371a2f7..08fbc5b 100644
--- a/Makefile
+++ b/Makefile
@@ -15,6 +15,7 @@
 default:
 	go run update_version.go
 	gitbook build
+	go run fix-data-revision.go
 
 zh2tw:
 	go run zh2tw.go . .md$$
@@ -31,6 +32,7 @@ review:
 	go run zh2tw.go . .md$$ tw2zh
 	gitbook build
 	go run zh2tw.go . .md$$ zh2tw
+	go run fix-data-revision.go
 
 qrcode:
 	go run ./tools/mkqrcode.go
diff --git a/fix-data-revision.go b/fix-data-revision.go
new file mode 100644
index 0000000..088ea66
--- /dev/null
+++ b/fix-data-revision.go
@@ -0,0 +1,82 @@
+// Copyright 2015 <chaishushan{AT}gmail.com>. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build ingore
+
+// 修复Gitbook生成html的时间戳.
+package main
+
+import (
+	"fmt"
+	"io/ioutil"
+	"log"
+	"os"
+	"path/filepath"
+	"regexp"
+	"strings"
+	"unicode/utf8"
+)
+
+// 输出目录
+const dir = "_book"
+
+var (
+	// data-revision="Mon Feb 01 2016 10:18:48 GMT+0800 (中国标准时间)"
+	reDataRevision     = regexp.MustCompile(`data\-revision\=\"[^"]+\"`)
+	goldenDataRevision = `data-revision="Mon Jan 2 15:04:05 -0700 MST 2006"`
+)
+
+func main() {
+	total := 0
+	filepath.Walk(dir, func(path string, info os.FileInfo, err error) error {
+		if err != nil {
+			log.Fatal("filepath.Walk: ", err)
+			return err
+		}
+		if info.IsDir() {
+			return nil
+		}
+		relpath, err := filepath.Rel(dir, path)
+		if err != nil {
+			log.Fatal("filepath.Rel: ", err)
+			return err
+		}
+
+		if !strings.HasSuffix(relpath, ".html") {
+			return nil
+		}
+		if changed := convertFile(path); changed {
+			fmt.Printf("%s\n", relpath)
+			total++
+		}
+		return nil
+	})
+	fmt.Printf("total %d\n", total)
+}
+
+func convertFile(path string) (changed bool) {
+	abspath, err := filepath.Abs(path)
+	if err != nil {
+		log.Fatal("convertFile: filepath.Abs:", err)
+	}
+
+	oldData, err := ioutil.ReadFile(abspath)
+	if err != nil {
+		log.Fatal("convertFile: ioutil.ReadFile:", err)
+	}
+	if !utf8.Valid(oldData) {
+		return false
+	}
+
+	newData := reDataRevision.ReplaceAll(oldData, []byte(goldenDataRevision))
+	if string(newData) == string(oldData) {
+		return false
+	}
+
+	err = ioutil.WriteFile(abspath, newData, 0666)
+	if err != nil {
+		log.Fatal("convertFile: ioutil.WriteFile:", err)
+	}
+	return true
+}