博客园备份提取

简述

在博客园记录了一些文章，想把它备份到github上，还好大部分博文都是markdown格式的，博客园也支持备份导出，但是到处的是单个的XML文件。
为了把每一篇博文单独提取出来，所以写了一个小程序来提取。

github中需要如下图所示的格式，方能正确的分类

文件名需要日期开头，文件内容中最前面一段是文章的一些描述信息

程序代码

程序是用Golang编写的，代码如下：

// cnblogs2githubpages project main.go
package main

import (
	"bytes"
	"encoding/xml"
	"fmt"
	"io/ioutil"
	"os"
	"strings"
	"time"
)

// 结构体中要能够进行XML解析，则字段名必须以大写开头
// 帖子
type Post struct {
	XMLName     xml.Name `xml:"item"`
	Title       string   `xml:"title"`
	Link        string   `xml:"link"`
	Creator     string   `xml:"dc:creator"`
	Author      string   `xml:"author"`
	PubDate     string   `xml:"pubDate"`
	Guid        string   `xml:"guid"`
	Description string   `xml:"description,CDATA"`
}

type Blogs struct {
	XMLName       xml.Name `xml:"channel"`
	Title         string   `xml:"title"`
	Link          string   `xml:"link"`
	Description   string   `xml:"description"`
	Language      string   `xml:"language"`
	LastBuildDate string   `xml:"lastBuildDate"`
	PubDate       string   `xml:"pubDate"`
	Ttl           string   `xml:"ttl"`
	Items         []Post   `xml:"item"`
}
type RSS struct {
	XMLName xml.Name `xml:"rss"`
	Blogs   Blogs    `xml:"channel"`
}

func main() {
	if len(os.Args) != 2 {
		return
	}
	backupxml, err := ioutil.ReadFile(os.Args[1])
	if err != nil {
		fmt.Println(err.Error())
		return
	}
	fmt.Println(len(backupxml))

	b := RSS{}

	err = xml.Unmarshal(backupxml, &b)
	if err != nil {
		fmt.Println(err.Error())
		return
	}
	fmt.Println(len(b.Blogs.Items))

        // 逐个导出
	for i, _ := range b.Blogs.Items {
		var item = &(b.Blogs.Items[i])
		t, _ := time.Parse(time.RFC1123, item.PubDate)
		postdate := t.Format("2006-01-02")
		// fmt.Printf("%s\n\t%s\n\t%s\n\t%s\n\t%s\n", date, item.Title, item.Link, item.Author, item.Description[0:64])
		postTitle := strings.ReplaceAll(item.Title, " ", "-")
		postTitle = strings.ReplaceAll(postTitle, "*", "")
		postTitle = strings.ReplaceAll(postTitle, "/", ".")
		postTitle = strings.ReplaceAll(postTitle, "\\", "")
		postTitle = strings.ReplaceAll(postTitle, "$", "")
		postTitle = strings.ReplaceAll(postTitle, "?", "")
		postTitle = strings.ReplaceAll(postTitle, ":", "-")
		postTitle = strings.ReplaceAll(postTitle, "。", "")
		filename := fmt.Sprintf("./%s-%s.md", postdate, postTitle)
		fmt.Println(filename)
                 
                // 根据博文的标题，做一个简单的分类（只适合当前情况）
		var categories string = "其它"
		{
			title2 := strings.ToLower(item.Title)
			if strings.Contains(title2, "live555") {
				categories = "live555"
			} else if strings.Contains(title2, "linux") || strings.Contains(title2, "ubuntu") {
				categories = "linux"
			} else if strings.Contains(title2, "gcc") || strings.Contains(title2, "git") ||
				strings.Contains(title2, "编程") || strings.Contains(title2, "编译") ||
				strings.Contains(title2, "vc") || strings.Contains(title2, "c++") ||
				strings.Contains(title2, "visual") || strings.Contains(title2, "程序") {
				categories = "编程"
			} else if strings.Contains(title2, "gdal") || strings.Contains(title2, "proj") ||
				strings.Contains(title2, "gis") || strings.Contains(title2, "地理") {
				categories = "地理信息"
			}
		}
		var desc bytes.Buffer

		desc.WriteString("---\r\n")
		desc.WriteString("layout:  post\r\n")
		desc.WriteString("title:  \"")
		desc.WriteString(item.Title)
		desc.WriteString("\"\r\ndate:  ")
		desc.WriteString(postdate)
		desc.WriteString("\r\ncategories:  ")
		desc.WriteString(categories)
		desc.WriteString("\r\ntags:  ")
		desc.WriteString(categories)
		desc.WriteString("\r\ncomments: 1\r\n")
		desc.WriteString("---\r\n")
		tocIndex := strings.Index(item.Description, "[TOC]")
		if tocIndex != -1 {
			tocIndex += len("[TOC]")
			desc.WriteString(item.Description[0:tocIndex])
			desc.WriteString("\r\n[博客园原文地址 ")
			desc.WriteString(item.Link)
			desc.WriteString("](")
			desc.WriteString(item.Link)
			desc.WriteString(")\r\n\r\n")
			desc.WriteString(item.Description[tocIndex:])
		} else {
			desc.WriteString("\r\n[TOC]\r\n[博客园文章地址 ")
			desc.WriteString(item.Link)
			desc.WriteString("](")
			desc.WriteString(item.Link)
			desc.WriteString(")\r\n")
			desc.WriteString(item.Description)
		}
		err := ioutil.WriteFile(filename, desc.Bytes(), os.ModePerm)
		if err != nil {
			fmt.Println(err.Error())
		}
	}
}