Github惡搞之自定義你的contribution圖表

在正式寫程序以前讓我先來看看效果：

對了，這個程序的效果就是生成一個具備你想要的「contributions in the last year」圖表的html頁面。
固然，html文件，而不是你在Github上面我的主頁中的實際的頁面。
固然，你能夠經過我的努力達到效果（我以前就見過一個I 心 U，可是暫時沒有找到出處），不過那須要很是努力和耐性，而且那麼作的話收穫更多（若是不是僅僅爲了那麼作而commit+push的話），因此這裏介紹一個程序來實現這種方法。
接下來我將用Java來編寫程序，主要分爲兩個步驟：

1. 下載網頁源代碼
2. 根據本身設計的字體替換網頁中對應的內容

其中第二步有不少現有的工具，好比Jsoup，可是能夠用正則表達式直接解決，後來我發現一個寫起來比較方便的方法，由於我發現每一種顏色對應一個fill元素，因此能夠直接從fill元素下手。
我把設計的字體保存在了文件picture-fonts.txt（是一個只有字符"0"和"1"的字符文件）中，並把每一個字符在picture-fonts.txt中的位置保存在了position.txt中。 他們的預期效果以下：

這意味着在這裏你暫時只能達到「ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789」的效果。
「contributions in the last year」列表裏面一共有7行53列，爲了保（tou）險（lan）這裏就先不去動最後一列了。因此咱們有7行52列能夠用，因此這個程序將會輸出最多的咱們想要的結果。
程序的代碼就一個，內容以下：

package fungithub;

import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.UnsupportedEncodingException;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class FunGithub {
    
    private static Map<String, Word> wordMap = new HashMap<String, Word>();
    private static int[][] picNumber = new int[1000][30];
    
    
    public static void main(String[] args) {
        if (args.length != 2) {
            System.err.println("usage : <username> <words>");
            System.exit(1);
        }
        solve(args[0], args[1]);
    }
    
    public static void solve(String username, String words) {
        words = words.toUpperCase();
        try (
            BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(System.getProperty("user.dir") + "/picture-fonts.txt"), "utf-8"))
                ) {
            int idx = 0;
            String line = null;
            while ((line = br.readLine()) != null) {
                line = line.trim();
                if (line.length() == 0) continue;
                int len = line.length();
                char[] ch = line.toCharArray();
                for (int i = 0; i < len; i ++) {
                    char c = ch[i];
                    picNumber[idx][i] = (int) c -  (int)'0';
                }
                idx ++;
            }
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e1) {
            e1.printStackTrace();
        }
        try (
            BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(System.getProperty("user.dir") + "/position.txt"), "utf-8"))
                ) {
            String line = null;
            while ((line = br.readLine()) != null) {
                line = line.trim();
                if (line.length() == 0) continue;
                Word temp = new Word(line);
                wordMap.put(temp.getC(), temp);
            }
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e1) {
            e1.printStackTrace();
        }
        
        List<Integer> allWords = new ArrayList<Integer>();
        int i;
        for (i = 0; i < words.length(); i ++) {
            String oneWordString = String.format("%c", words.charAt(i));
            Word oneWord = wordMap.get(oneWordString);
            if (oneWord == null) {
                System.err.println(oneWordString + " not exists!");
                continue;
            }
            List<Integer> tmpWordsList = oneWord.getWordsList();
            if (allWords.size() + tmpWordsList.size() > 52 * 7)
                break;
            else {
                allWords.addAll(tmpWordsList);
                if (allWords.size() + 7 <= 52 * 7)
                    for (int j = 0; j < 7; j ++)
                        allWords.add(0);
            }
        }
        System.out.println("\"" + words.substring(0, i) +"\" solved!");
        int delta = 52 * 7 - allWords.size();
        for (int j = 0; j < delta; j ++) allWords.add(0);
        // allWords -- the list with 52 * 7 words generated.
        
        // download url content
        URL url = null;
        HttpURLConnection urlConnection = null;
        BufferedReader reader;
        String pageContent = "";
        try {
            url = new URL("https://github.com/" + username);
            urlConnection = (HttpURLConnection) url.openConnection();
            reader = new BufferedReader(new InputStreamReader(urlConnection.getInputStream(), "utf-8"));
            String line;
            while ((line = reader.readLine()) != null){
                 pageContent += line + "\n";
            }
        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        
        pageContent = pageContent.replaceAll("fill=\"#[0-9a-e]{6}\"", "MoON1igHt");
        for (int word : allWords) {
            String fillStr = null;
            if (word == 1) {
                fillStr = "fill=\"#1e6823\"";
            } else {
                double r = Math.random();
                if (r <= 0.3) fillStr = "fill=\"#eeeeee\"";
                else if (r <= 0.9) fillStr = "fill=\"#d6e685\"";
                else if (r <= 0.96) fillStr = "fill=\"#8cc665\"";
                else fillStr = "fill=\"#44a340\"";
            }
            pageContent = pageContent.replaceFirst("MoON1igHt", fillStr);
        }
        pageContent = pageContent.replaceAll("MoON1igHt", "fill=\"#eeeeee\"");
        
        // write content to output html file, here I set it to Desktop, here I am the user "Administrator" on Windows7
        String outputFileName = "C:/Users/Administrator/Desktop/" + username + "-" + words + ".html";
        try (
                OutputStreamWriter osw = new OutputStreamWriter(new FileOutputStream(outputFileName), "utf-8");
                ) {
            osw.write(pageContent);
        } catch (UnsupportedEncodingException | FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        
        System.out.println(username + "-" + words + ".html successifully generated at desktop!");
    }
    
    static class Word {
        
        private String c;
        private int px;
        private int py;
        private int height;
        private int width;
        private List<Integer> wordsList;
        
        public Word(String line) {
            String[] arr = line.split(",");
            c = arr[0];
            px = Integer.parseInt(arr[1]);
            py = Integer.parseInt(arr[2]);
            height = Integer.parseInt(arr[3]);
            width = Integer.parseInt(arr[4]);
            
            // generate wordsList
            wordsList = new ArrayList<Integer>();
            for (int j = 0; j < width; j ++) 
                for (int i = 0; i < height; i ++)
                    wordsList.add(picNumber[px+i][py+j]);
        }
        
        public String getC() { return c; }
        public int getPx() { return px; }
        public int getPy() { return py; }
        public int getHeight() { return height; }
        public int getWidth() { return width; }
        public List<Integer> getWordsList() { return wordsList; }
    }
}

另外還有2個資源文件，Github項目位置：https://github.com/moonlightpoet/FunGithub 有興趣能夠玩一下。
另外github pages上面放了兩個能夠看看在線效果（一個I Love you的和一個Fxxk you的）：

I Love You
Fxxk You

注：今天找到了知乎上問題的出處了