博客園備份提取

目錄

• 簡述
• 程序代碼

簡述

在博客園記錄了一些文章，想把它備份到github上，還好大部分博文都是markdown格式的，博客園也支持備份導出，可是處處的是單個的XML文件。
爲了把每一篇博文單獨提取出來，因此寫了一個小程序來提取。

github中須要以下圖所示的格式，方能正確的分類

文件名須要日期開頭，文件內容中最前面一段是文章的一些描述信息

程序代碼

程序是用Golang編寫的，代碼以下：

// cnblogs2githubpages project main.go
package main

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

// 結構體中要可以進行XML解析，則字段名必須以大寫開頭
// 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))

        // 逐個導出
    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)
                 
                // 根據博文的標題，作一個簡單的分類（只適合當前狀況）
        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, "編程") || strings.Contains(title2, "編譯") ||
                strings.Contains(title2, "vc") || strings.Contains(title2, "c++") ||
                strings.Contains(title2, "visual") || strings.Contains(title2, "程序") {
                categories = "編程"
            } 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, "")
        if tocIndex != -1 {
            tocIndex += len("[TOC]")
            desc.WriteString(item.Description[0:tocIndex])
            desc.WriteString("\r\n[博客園原文地址 ")
            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[博客園文章地址 ")
            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())
        }
    }
}