import java.io.*;
import java.util.*;
/*
Used to generate table of contents.
- No args: generate GitHub table
- args == 'wordpress', generate WordPress table.
- args == 'review', generate Review Page
- args == 'all', genereate both table
*/
public class GenerateCodeTable {
private static final String NOT_AVAILABLE = "N/A";
/*
TableRow, used to hold table object and sort by date.
*/
private static class TableRow {
private long date = 0;
private String fileName;
private String level;
private String tutorialLink;
private String note;
private List tags;
public TableRow(
long date,
String fileName,
String level,
String tutorialLink,
String note,
List tags) {
this.date = date;
this.fileName = fileName;
this.level = level;
this.tutorialLink = tutorialLink;
this.note = note;
this.tags = tags;
}
public long getDate() {
return this.date;
}
public String getFileName() {
return this.fileName;
}
public String getLevel() {
return this.level;
}
public String getTutorialLink() {
return this.tutorialLink;
}
public String getNote() {
return this.note;
}
public List getTags() {
return this.tags;
}
public String getTableComposedLine() {
return "|[" + this.fileName + "](https://github.com/awangdev/LintCode/blob/master/Java/" + fileName.replace(" ", "%20")
+ ")|" + this.level + "|Java|" + this.tags + "|"+ this.tutorialLink + "|\n";
}
}
public final static String TUTORIAL_KEY_WORD = "tutorial:";
public final static String TAGS_KEY_WORD = "tags:";
public static void main(String[] args) {
GenerateCodeTable gct = new GenerateCodeTable();
//Read Java Solution Folder
File folder = new File("./Java");//"." = current path
if (!folder.exists() || !folder.isDirectory()) {
System.out.println("Check Directory:1");
return;
}
File[] listOfFiles = folder.listFiles();
if (listOfFiles == null) {
System.out.println("Check Directory:2");
return;
}
String outputContent = "";
File outFile;
if (args.length == 0){
outputContent = gct.generateREADME(listOfFiles);
gct.printTable("README.md", outputContent);
} else if (args != null && args[0].contains("wordpress")) {//Wordpress
outputContent = gct.generateWordPressPage(listOfFiles);
gct.printTable("WordPress.txt", outputContent);
} else if (args != null && args[0].contains("review")) {//Review Page
outputContent = gct.generateReviewPage(listOfFiles);
gct.printTable("ReviewPage.md", outputContent);
} else if (args != null && args[0].contains("tags")) {//Wordpress
outputContent = gct.generateTagREADME(listOfFiles);
gct.printTable("TagREADME.md", outputContent);
} else if (args != null && args[0].contains("all")) {
outputContent = gct.generateREADME(listOfFiles);
gct.printTable("README.md", outputContent);
//outputContent = generateWordPressPage(listOfFiles);
//printTable("WordPress.txt", outputContent);
outputContent = gct.generateReviewPage(listOfFiles);
gct.printTable("ReviewPage.md", outputContent);
outputContent = gct.generateTagREADME(listOfFiles);
gct.printTable("TagREADME.md", outputContent);
outputContent = gct.generateTagReviewPage(listOfFiles);
gct.printTable("TagReviewPage.md", outputContent);
outputContent = gct.generateLevelReviewPage(listOfFiles);
gct.printTable("LevelReviewPage.md", outputContent);
}
System.out.println("Mission Accomplished. Now go ahead and commit");
}
/*
Output the content into file
*/
public void printTable(String fileName, String outputContent) {
//System.out.println(outputContent);
//Write to README.md
try {
File outFile = new File(fileName);
FileOutputStream fop = new FileOutputStream(outFile);
byte[] contentInBytes = outputContent.getBytes();
fop.write(contentInBytes);
fop.flush();
fop.close();
} catch (IOException e) {
e.printStackTrace();
}
}
/*
Generate Wordpress contents
*/
public String generateWordPressPage(File[] listOfFiles) {
//Assemble output
String outputContent = "Java Solutions to algorithm problems from LintCode, LeetCode...etc.\n" +
"" +
"" +
"" +
"" +
"" +
"" +
"" +
"" +
"";
int count = 0;
for (File file : listOfFiles) {
if (file.getName().contains(".java")) {
//outputContent += "|" + count + "|[" + file.getName() + "](https://github.com/awangdev/LintCode/blob/master/Java/"+ file.getName() +")| |" + "Java|\n";
outputContent+=
"" +
"" +
"" +
"" +
"";
count++;
}
}
outputContent += "";
return outputContent;
}
/*
Generate GitHub ReadMe contents
*/
public String generateREADME(File[] listOfFiles) {
//Assemble output
String outputContent = "# Java Algorithm Problems\n\n" +
"### 程序员的一天\n" +
"从开始这个Github已经有将近两年时间, 很高兴这个repo可以帮到有需要的人. 我一直认为, 知识本身是无价的, 因此每逢闲暇, 我就会来维护这个repo, 给刷题的朋友们一些我的想法和见解. 下面来简单介绍一下这个repo:\n\n" +
"**README.md**: 所有所做过的题目\n\n" +
"**ReviewPage.md**: 所有题目的总结和归纳（不断完善中）\n\n" +
"**KnowledgeHash2.md**: 对所做过的知识点的一些笔记\n\n" +
"**SystemDesign.md**: 对系统设计的一些笔记\n\n" +
"**Future Milestone**: 我准备将一些有意思的题目，做成视频的形式给大家参考\n\n" +
//"**借此机会, 正式介绍一下自己, 以及我背后的大老板**\n\n" +
//"[](https://youtu.be/3keMZsV1I1U)\n\n" +
"希望大家学习顺利, 对未来充满希望(程序员也是找到好老板的!)\n" +
"有问题可以给我写邮件(wangdeve@gmail.com), 或者在GitHub上发issue给我.\n\n" +
"| Squence | Problem | Level | Language | Tags | Video Tutorial|\n" +
"|:-------:|:--------------|:------:|:---------:|:----:|:-------------:|\n";
final List tableRows = getTableRows(listOfFiles);
for (int i = 0; i < tableRows.size(); i++) {
outputContent += "|" + i + tableRows.get(i).getTableComposedLine();
}
return outputContent;
}
/* Generate the tags Table*/
public String generateTagREADME(File[] listOfFiles) {
String outputContent = generateTableOfContent("TagREADME.md") + "\n\n";
String header = "| Squence | Problem | Level | Language | Tags | Video Tutorial|\n" +
"|:-------:|:--------------|:------:|:---------:|:----:|:-------------:|\n";
final List tableRows = getTableRows(listOfFiles);
final HashMap> tagToRows = new HashMap<>();
tableRows.forEach(tableRow -> {
for (String tag: tableRow.getTags()) {
if (tag == null || tag.length() == 0) {
continue;
}
if (!tagToRows.containsKey(tag)) {
tagToRows.put(tag, new ArrayList());
}
tagToRows.get(tag).add(tableRow);
}
});
// Build View
List>> entries = new ArrayList<>(tagToRows.entrySet());
entries.sort(Comparator.comparing(entry -> -entry.getValue().size()));
for (Map.Entry> entry : entries) {
StringBuffer sb = new StringBuffer(" \n \n \n## " + entry.getKey() + " (" + entry.getValue().size() + ")\n");
sb.append(header);
List entryTableRows = entry.getValue();
entryTableRows.sort(Comparator.comparing(row -> String.join(",", row.getTags())));
for (int i = 0; i < entryTableRows.size(); i++) {
sb.append("|" + i + entryTableRows.get(i).getTableComposedLine());
}
outputContent += sb.toString() + "\n\n\n";
}
return outputContent;
}
// Generate review files by tags
public String generateTagReviewPage(File[] listOfFiles) {
final List tableRows = getTableRows(listOfFiles);
final HashMap> tagToRows = new HashMap<>();
// Group by tags:
tableRows.forEach(tableRow -> {
for (String tag: tableRow.getTags()) {
if (tag == null || tag.length() == 0) {
continue;
}
if (!tagToRows.containsKey(tag)) {
tagToRows.put(tag, new ArrayList());
}
tagToRows.get(tag).add(tableRow);
}
});
// Build View
String outputContent = "";
for (Map.Entry> entry : tagToRows.entrySet()) {
StringBuffer sb = new StringBuffer(" \n \n \n## " + entry.getKey() + " (" + entry.getValue().size() + ")\n");
sb.append(buildReviewSection(entry.getValue()));
outputContent += sb.toString() + "\n\n\n";
printTable("review/" + entry.getKey() + ".md", sb.toString());
}
return outputContent;
}
// Generate review files by levels
public String generateLevelReviewPage(File[] listOfFiles) {
final List tableRows = getTableRows(listOfFiles);
final HashMap> levelToRows = new HashMap<>();
// Group by levels:
tableRows.forEach(tableRow -> {
String level = tableRow.getLevel();
if (NOT_AVAILABLE.equals(tableRow.getLevel())) {
level = "NA";
}
if (!levelToRows.containsKey(level)) {
levelToRows.put(level, new ArrayList());
}
levelToRows.get(level).add(tableRow);
});
// Build View
String outputContent = "";
for (Map.Entry> entry : levelToRows.entrySet()) {
StringBuffer sb = new StringBuffer(" \n \n \n## " + entry.getKey() + " (" + entry.getValue().size() + ")\n");
sb.append(buildReviewSection(entry.getValue()));
outputContent += sb.toString() + "\n\n\n";
printTable("review/level/" + entry.getKey() + ".md", sb.toString());
}
return outputContent;
}
/*
Generate Review Page contents
Review Page content:
1. Sequence
2. Name
3. Difficulty
4. Summary of solution, key points.
*/
public String generateReviewPage(File[] listOfFiles) {
//Assemble output
String outputContent = "# Review Page\n\n" +
"This page summarize the solutions of all problems. For thoughts,ideas written in English, refer to deach individual solution. \n" +
"New problems will be automatically updated once added.\n\n";
final List tableRows = getTableRows(listOfFiles);
int count = 0;
int countMiss = 0;
outputContent += buildReviewSection(tableRows);
return outputContent;
}
private String buildReviewSection(List tableRows) {
int count = 0;
int countMiss = 0;
StringBuffer sb = new StringBuffer();
for (TableRow tableRow: tableRows) {
// Skip non-ready items
if (NOT_AVAILABLE.equals(tableRow.getLevel())) {
System.out.println(countMiss + ". [File not yet formatted]: " + tableRow.getFileName() + " [Skipping. Please revisit]");
countMiss++;
continue;
}
//System.out.println(count + ". " + tableRow.getLevel() + " [File not yet formatted]: " + tableRow.getFileName());
sb.append("**" + count + ". [" + tableRow.getFileName());
sb.append("](https://github.com/awangdev/LintCode/blob/master/Java/");
sb.append(tableRow.getFileName().replace(" ", "%20") +")**");
sb.append(" Level: " + tableRow.getLevel() + " Tags: " + tableRow.getTags() + "\n");
sb.append(" " + tableRow.getTutorialLink() + "\n");
sb.append(tableRow.getNote() + "\n");
sb.append("\n---\n\n");
count++;
}
return sb.toString();
}
private List getTableRows(File[] listOfFiles) {
final ArrayList tableRows = new ArrayList<>();
for (File file : listOfFiles) {
if (file.getName().contains(".java")) {
tableRows.add(getTableRow(file.getName()));
}
}
Collections.sort(tableRows, Comparator.comparing(TableRow::getDate));
return tableRows;
}
private TableRow getTableRow(String fileName) {
TableRow tableRow = null;
String tutorialLink = "";
String calculatedLevel = NOT_AVAILABLE;
long timestamp = 0;
List tags = new ArrayList<>();
try {
final BufferedReader reader = new BufferedReader(new InputStreamReader(
new FileInputStream("Java/" + fileName), "UTF-8"));
// Get level
String line = reader.readLine().trim();
if (line.length() == 1 && !calculateLevel(line).isEmpty()){
calculatedLevel = calculateLevel(line.toUpperCase());
line = reader.readLine().trim();
}
// Get timestamp
if (line.length() != 0) {
try{
timestamp = Long.parseLong(line);
line = reader.readLine().trim();
}catch(final Exception e){
System.out.println("Timestamp Not added yet: " + fileName);
}
}
// Get tutorial
if (line.contains(TUTORIAL_KEY_WORD)) {
tutorialLink = "[Link](" + line.substring(TUTORIAL_KEY_WORD.length()) + ")";
line = reader.readLine().trim();
}
// Get Tags
if (line.contains(TAGS_KEY_WORD)) {
// Do something
String tagLine = line.substring(TAGS_KEY_WORD.length());
for (String tag : tagLine.split(",")) {
tags.add(tag.trim());
}
Collections.sort(tags);
}
// Get Note
String note = "";
while ((line = reader.readLine()) != null && !line.equals("```") && !line.equals("/*")) {
note += line + "\n";
}
// Get result
tableRow = new TableRow(timestamp, fileName, calculatedLevel, tutorialLink, note, tags);
} catch (final Exception e) {
System.err.format("IOException: %s%n", e);
}
return tableRow;
}
private String calculateLevel(final String level) {
switch(level) {
case "N" :
return "Naive";
case "E" :
return "Easy";
case "M" :
return "Medium";
case "H" :
return "Hard";
case "S" :
return "Super";
case "R" :
return "Review";
}
return NOT_AVAILABLE;
}
// Build the table of contents of the page. Need to have 'gh-md-toc' installed
private String generateTableOfContent(String fileName) {
StringBuffer sb = new StringBuffer();
try {
Runtime rt = Runtime.getRuntime();
String[] commands = {"./gh-md-toc", fileName};
Process proc = rt.exec(commands);
BufferedReader stdInput = new BufferedReader(new
InputStreamReader(proc.getInputStream()));
BufferedReader stdError = new BufferedReader(new
InputStreamReader(proc.getErrorStream()));
// read the output from the command
System.out.println("Here is the standard output of the command:\n");
String s = null;
while ((s = stdInput.readLine()) != null) {
if (!s.contains("[gh-md-toc]") && !s.contains("table-of-contents")) {
sb.append(s.trim() + "\n");
}
}
// read any errors from the attempted command
System.out.println("Here is the standard error of the command (if any):\n");
while ((s = stdError.readLine()) != null) {
System.out.println(s);
}
} catch (final Exception e) {
System.err.format("IOException: %s%n", e);
}
System.out.println(sb.toString());
return sb.toString();
}
}