生成Markdown目录 字符串解析
目录
目录
生成Markdown目录 字符串解析
使用方式
工具类的作用:生成GitHub
上仓库MyAndroidBlogs的REANME.MD
中博客的目录。
使用步骤式:
1、通过为知笔记导出指定目录下的所有文件,导出为U8格式的纯文本
2、执行以下代码
String DIR = "D:/为知笔记导出/导出的笔记";
MDUtils.modifyFile(new File(DIR)); //递归修改文件后缀名并修改文件内容
TOCUtils.insertToc(new File(DIR)); //递归为文件生成目录
FrontMatterUtils.insertFrontMatter(new File(DIR)); //递归为文件生成FrontMatter
DirUtils.getFormatFilesNames(new File(DIR)); //递归获取文件名,并将格式化后的内容复制到粘贴板
3、将粘贴板中的内容粘贴到REANME.MD
中
一些常量
private static final String DIR = "D:/为知笔记导出/MyAndroidBlogs";
private static final String WEBSITE = "https://github.com/baiqiantao/MyAndroidBlogs/blob/master/";
private static final String FILTER = "MD";
private static final String SUFFIX_MD_TXT = ".md.txt";
private static final String SUFFIX_TXT = ".txt";
private static final String SUFFIX_MD = ".md";
private static final String SPACE = " ";
private static final String SPACE_FORMAT = "%20";
private static final String[] EXCLUDE_FILES = new String[]{".git", "README.md"};
private static final String[] REPLACE_STRINGS = new String[] { " " };//特殊字符
private static final String BLANK = " ";//空格
文件目录递归修改
递归修改文件后缀名并修改文件内容
/**
* 递归修改文件后缀名并修改文件内容
*/
public static void modifyFile(File from) {
if (from == null || !from.exists()) {
throw new RuntimeException("源目录或文件不存在");
}
if (from.isFile()) {
if (from.getName().contains(FILTER)) {//只处理带指定标识的文件
copyAndModifyFileContent(from, new File(from.getParent(), getNewName(from)));
}
from.delete();//删除源文件
return;
}
File[] listFiles = from.listFiles();
if (listFiles == null || listFiles.length == 0) {
System.out.println("----------------------" + from.getName() + "中不存在任何文件");
from.delete();//删除空文件夹
return;
}
for (File file : listFiles) {
if (file.isDirectory()) {
modifyFile(file);//递归
} else if (file.isFile()) {
if (file.getName().contains(FILTER)) {//只处理带指定标识的文件
copyAndModifyFileContent(file, new File(file.getParent(), getNewName(file)));
}
file.delete();
}
}
listFiles = from.listFiles();
if (listFiles == null || listFiles.length == 0) {
System.out.println("----------------------" + from.getName() + "的文件全部不符合要求");
from.delete();//删除空文件夹
}
}
递归修改文件后缀名
/**
* 递归修改文件后缀名
*/
public static void modifyFileSuffix(File from) {
if (from == null || !from.exists()) {
throw new RuntimeException("源目录或文件不存在");
}
if (from.isFile()) {
if (from.getName().contains(FILTER)) {//只处理带指定标识的文件
from.renameTo(new File(from.getParent(), getNewName(from)));
} else {
from.delete();//删除源文件
}
return;
}
File[] listFiles = from.listFiles();
if (listFiles == null || listFiles.length == 0) {
System.out.println("----------------------" + from.getName() + "中不存在任何文件");
from.delete();//删除空文件夹
return;
}
for (File file : listFiles) {
if (file.isDirectory()) {
modifyFileSuffix(file);//递归
} else if (file.isFile()) {
if (file.getName().contains(FILTER)) {//只处理带指定标识的文件
file.renameTo(new File(file.getParent(), getNewName(file)));
} else {
file.delete();
}
}
}
listFiles = from.listFiles();
if (listFiles == null || listFiles.length == 0) {
System.out.println("----------------------" + from.getName() + "的文件全部不符合要求");
from.delete();//删除空文件夹
}
}
/**
* 获取重命名的文件名
*/
private static String getNewName(File file) {
String name = file.getName();
if (name.endsWith(SUFFIX_MD_TXT)) { //处理指定后缀的文件
name = name.substring(0, name.indexOf(SUFFIX_MD_TXT) + SUFFIX_MD.length());
} else if (name.endsWith(SUFFIX_TXT)) {
name = name.substring(0, name.indexOf(SUFFIX_TXT)) + SUFFIX_MD;
}
return name;
}
递归获取格式化后的文件名
/**
* 获取指定目录及其子目录下的文件的文件名,并对文件名进行格式化,并存储到一个指定的集合中,并将内容复制到粘贴板
*/
public static List<String> getFormatFilesNames(File from) {
List<String> filePathList = new ArrayList<>();
getDirFormatFilesNames(filePathList, from, 0);
StringBuilder sBuilder = new StringBuilder();
for (String string : filePathList) {
System.out.print(string);
sBuilder.append(string);
}
setSysClipboardText(sBuilder.toString());
return filePathList;
}
/**
* 递归获取指定目录及其子目录下的文件的文件名,并对文件名进行格式化,并存储到一个指定的集合中
*
* @param filePathList 将结果保存到指定的集合中
* @param from 要遍历的目录
* @param curLeval 记录当前递归所在层级
*/
private static void getDirFormatFilesNames(List<String> filePathList, File from, int curLeval) {
if (from == null || !from.exists()) {
throw new RuntimeException("源目录或文件不存在");
} else if (isExcludeFile(from.getName())) {
System.out.println("----------------------" + "忽略文件" + from.getName());
return;
} else {
filePathList = filePathList == null ? new ArrayList<String>() : filePathList;
filePathList.add(getTitle(curLeval, from));
}
curLeval++;
File[] files = from.listFiles();
if (files == null || files.length == 0) {
System.out.println("----------------------" + from.getName() + "中不存在任何文件");
return;
}
for (File file : files) {
if (file.isDirectory()) {
getDirFormatFilesNames(filePathList, file, curLeval);//递归
} else if (file.isFile() && !isExcludeFile(file.getName())) {
filePathList.add(getTitle(curLeval, file));
}
}
}
/**
* 判断是否是忽略的文件
*/
private static boolean isExcludeFile(String fileName) {
for (String name : EXCLUDE_FILES) {
if (name.equals(fileName)) {
return true;
}
}
return false;
}
文件复制
递归复制目录下的所有文件
/**
* 递归复制目录下的所有文件
*/
public static void copyFiles(File from, File to) {
if (from == null || !from.exists() || to == null) {
throw new RuntimeException("源文件或目标文件不存在");
}
if (from.equals(to)) {
System.out.println("----------------------源文件和目标文件是同一个" + from.getAbsolutePath());
}
if (from.isDirectory()) {
if (to.isFile()) {
throw new RuntimeException("目录不能复制为文件");
}
if (!to.exists()) {
to.mkdirs();//创建目录
}
} else {
if (to.isDirectory()) {
throw new RuntimeException("文件不能复制为目录");
}
copyFile(from, to);//文件的话直接复制
return;
}
File[] files = from.listFiles();
if (files == null || files.length == 0) {
System.out.println(from.getName() + "中不存在任何文件");
return;
}
for (File file : files) {
if (file.isDirectory()) {
File copyDir = new File(to, file.getName());
if (!copyDir.exists()) {
copyDir.mkdirs();
System.out.println("创建子目录\t\t" + copyDir.getAbsolutePath());
}
copyFiles(file, copyDir);//递归
} else if (file.getName().contains(FILTER)) {
copyFile(file, new File(to, file.getName()));
}
}
}
复制一个文件或一个目录
/**
* 复制一个文件或一个目录(不会递归复制目录下的文件)
*/
public static void copyFile(File from, File to) {
if (from == null || !from.exists() || to == null) {
throw new RuntimeException("源文件或目标文件不存在");
}
if (from.equals(to)) {
System.out.println("----------------------源文件和目标文件是同一个" + from.getAbsolutePath());
}
if (from.isDirectory()) {
if (to.isFile()) {
throw new RuntimeException("目录不能复制为文件");
}
if (!to.exists()) {
to.mkdirs();//创建目录
}
return; //没有下面的刘操作
} else {
if (to.isDirectory()) {
throw new RuntimeException("文件不能复制为目录");
}
if (!to.getParentFile().exists()) {
to.getParentFile().mkdirs(); //复制父目录
}
}
try {
BufferedInputStream bufis = new BufferedInputStream(new FileInputStream(from));
BufferedOutputStream bufos = new BufferedOutputStream(new FileOutputStream(to));
int ch;
while ((ch = bufis.read()) != -1) {
bufos.write(ch);
}
bufis.close();
bufos.close();
} catch (IOException e) {
e.printStackTrace();
}
}
复制一个文件并修改文件内容
/**
* 复制一个文件或目录(不会复制目录下的文件),复制的时候会修改文件中的一些内容
*/
public static void copyAndModifyFileContent(File from, File to) {
if (from == null || !from.exists() || to == null) {
throw new RuntimeException("源文件或目标文件不存在");
}
if (from.equals(to)) {
System.out.println("----------------------源文件和目标文件是同一个" + from.getAbsolutePath());
}
if (from.isDirectory()) {
if (to.isFile()) {
throw new RuntimeException("目录不能复制为文件");
}
if (!to.exists()) {
to.mkdirs();//创建目录
}
return; //没有下面的刘操作
} else {
if (to.isDirectory()) {
throw new RuntimeException("文件不能复制为目录");
}
if (!to.getParentFile().exists()) {
to.getParentFile().mkdirs(); //复制父目录
}
}
try {
BufferedReader bufr = new BufferedReader(new FileReader(from));
BufferedWriter bufw = new BufferedWriter(new FileWriter(to));
String line;
//另外开辟一个缓冲区,存储读取的一行数据,返回包含该行内容的字符串,不包含换行符,如果已到达流末尾,则返回【 null】
while ((line = bufr.readLine()) != null) {
for (String string : REPLACE_STRINGS) {
line = line.replace(string, BLANK);//替换为空格
}
bufw.write(line);
bufw.write(BLANK + BLANK);//加两个空格
bufw.newLine();// 写入一个行分隔符
bufw.flush();
}
bufr.close();
bufw.close();
} catch (IOException e) {
e.printStackTrace();
}
}
其他工具方法
将字符串复制到剪切板
/**
* 将字符串复制到剪切板
*/
public static void setSysClipboardText(String writeMe) {
Clipboard clip = Toolkit.getDefaultToolkit().getSystemClipboard();
Transferable tText = new StringSelection(writeMe);
clip.setContents(tText, null);
}
生成格式化的 Markdown 目录
/***
* 格式化目录
*/
private static String getTitle(int level, File file) {
StringBuilder sb = new StringBuilder();
StringBuilder parentPath = new StringBuilder();
File parent = file;
for (int x = 1; x < level; x++) {
sb.append("\t");
parent = parent.getParentFile();//逐级获取父文件
parentPath.insert(0, parent.getName() + "/");//在前面插入父文件的文件名
}
sb.append("-").append(" ")//无序列表
.append("[")//超链接显示的字符
.append(file.getName().endsWith(SUFFIX_MD) ? file.getName().substring(0, file.getName().lastIndexOf(SUFFIX_MD)) : file.getName())//
.append("]")//
.append("(")//拼接超链接
.append(WEBSITE)//前缀
.append(parentPath.toString())//父目录
.append(file.getName().replaceAll(SPACE, SPACE_FORMAT))//文件名
.append(")")//
.append("\n");
return sb.toString();
}
生成 Markdown 的目录
用到的常量
private static final String HEADER_STRING = "#";
private static final char HEADER_CHAR = '#';
private static final String TOC_TITLE = "";//在目录前插入的内容
private static final String REPLACE_TOC = "[TOC]"; //目录要替换的内容
private static final String HEADER_1 = "="; //一级目录
private static final String HEADER_2 = "--"; //二级目录
private static final String PATTERN = "%s- [%s](#%s)";//标题的格式
private static final String SPACES = " ";
private static final String CODES = "%([abcdef]|\\d){2,2}";
private static final String SPECIAL_CHARS = "[\\/?!:\\[\\]`.,()*\"';{}+=<>~\\$|#]";
private static final String DASH = "-";
private static final String EMPTY = "";
private static final String AFFIX = "\t";
递归为文件生成Markdown目录
/**
* 递归为文件生成Markdown目录
*/
public static void insertToc(File from) {
if (from == null || !from.exists()) {
throw new RuntimeException("源目录或文件不存在");
}
if (from.isFile()) {
insertTocIntoFile(from, from, REPLACE_TOC, Integer.MAX_VALUE);
return;
}
File[] listFiles = from.listFiles();
if (listFiles == null || listFiles.length == 0) {
System.out.println("----------------------" + from.getName() + "中不存在任何文件");
return;
}
for (File file : listFiles) {
if (file.isDirectory()) {
insertToc(file);//递归
} else if (file.isFile()) {
insertTocIntoFile(file, file, REPLACE_TOC, Integer.MAX_VALUE);
}
}
}
/**
* 为文件生成Markdown目录
*/
public static void insertTocIntoFile(File from, File to, String replaceAt, int deepLevel) {
BufferedReader reader = null;
try {
reader = new BufferedReader(new InputStreamReader(new FileInputStream(from)));
String line;//当前行的内容
String previousLine = null;
List<String> contentList = new ArrayList<>();//每一行的内容集合
List<String> titleList = new ArrayList<>();//标题集合
int currentLine = 0;
int patternLineNumber = 1; //目录插在那一行
while ((line = reader.readLine()) != null) {
++currentLine;
boolean skipLine = false;
String trimLineString = line.trim();
if (trimLineString.startsWith(HEADER_STRING)) { //检测到标题
int count = getCharCount(trimLineString, HEADER_CHAR);
if (count < 1 || count > deepLevel) { //层级控制
System.out.println("----------------------------超过最大层级 " + deepLevel);
previousLine = line;
continue;
}
String headerName = trimLineString.substring(count).trim(); //去掉层级后的文字
titleList.add(getTitle(count, headerName));
} else if (line.startsWith(HEADER_1) && isNotEmpty(previousLine) && line.replaceAll(HEADER_1, "").isEmpty()) {
titleList.add(getTitle(1, previousLine));
} else if (line.startsWith(HEADER_2) && isNotEmpty(previousLine) && line.replaceAll(HEADER_2, "").isEmpty()) {
titleList.add(getTitle(2, previousLine));
} else if (patternLineNumber <= 1 && line.trim().equals(replaceAt)) {
patternLineNumber = currentLine; //找到这个字符串时就插在这一行(替换这个字符串),找到之后就不再继续找了
skipLine = true;//忽略这一行
}
if (!skipLine) {
contentList.add(line);
}
previousLine = line;
}
closeStream(reader); //必须先关掉这个读取,流才能开启写入流
if (patternLineNumber <= 0) {
System.out.println("----------------------------目录插入位置有误");
return;
}
contentList.add(patternLineNumber - 1, TOC_TITLE);//在指定位置插入目录前面的标题
for (String title : titleList) {
contentList.add(patternLineNumber, title);
patternLineNumber++;
}
writeFile(to, contentList);
} catch (Exception e) {
e.printStackTrace();
} finally {
closeStream(reader);
}
}
/**
* 写内容到指定文件
*/
private static void writeFile(File to, List<String> contentList) {
PrintWriter writer = null;
try {
writer = new PrintWriter(new FileWriter(to));
for (String string : contentList) {
writer.append(string).append("\n");
}
writer.close();
} catch (IOException e) {
e.printStackTrace();
} finally {
closeStream(writer);
}
}
插入的目录格式
/**
* 插入的目录的模型
*/
private static String getTitle(int deepLevel, String headerName) {
StringBuilder title = new StringBuilder();
if (deepLevel > 1) {
for (int i = 0; i < deepLevel - 1; i++) {
title.append(AFFIX);
}
}
String headerLink = headerName.trim()//
.replaceAll(SPACES, DASH)//替换特殊字符,比如必须将空格换成'-'
.replaceAll(CODES, EMPTY)//
.replaceAll(SPECIAL_CHARS, EMPTY).toLowerCase();
title.append(DASH).append(SPACES)//格式为【%s- [%s](#%s)】或【缩进- [标题][#链接]】
.append("[").append(headerName).append("]")//
.append("(").append("#")//
.append(headerLink)//
.append(")");
return title.toString();
}
其他一些用到的工具方法
/**
* 关闭流
*/
public static void closeStream(Closeable... closeable) {
for (Closeable c : closeable) {
if (c != null) {
try {
c.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
/**
* 计算字符串中字符的个数
*/
private static int getCharCount(String string, char c) {
int count = 0;
for (int i = 0; i < string.length(); i++) {
if (string.charAt(i) == c) {
++count;
} else {
break;
}
}
return count;
}
/**
* 获取文件行数
*/
public static int getFileLines(File file) {
LineNumberReader reader = null;
try {
reader = new LineNumberReader(new FileReader(file));
reader.skip(Long.MAX_VALUE);
return reader.getLineNumber() + 1;
} catch (IOException ignored) {
} finally {
closeStream(reader);
}
return -1;
}
/**
* 判断字符串非空
*/
public static boolean isNotEmpty(String string) {
return string != null && !string.isEmpty();
}
源码
使用
public class Test {
public static final String DEFAULT_DIR = "D:/为知笔记导出/导出的笔记";
public static final String GITHUB_DIR = "GitHub_" + new SimpleDateFormat("yyyyMMdd").format(new Date());
public static final String HEXO_DIR = "hexo_" + new SimpleDateFormat("yyyyMMdd").format(new Date());
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.println("请输入源文件目录,若目录为【D:/为知笔记导出/导出的笔记】可直接按回车键");
String dir = scanner.nextLine();
if (dir == null || dir.length() == 0) dir = DEFAULT_DIR;
File dirFile = new File(new File(dir).getParentFile(), "备份");
File sourceFile = new File(dirFile, GITHUB_DIR);
if (sourceFile.exists()) FileCopyUtils.deleateFiles(sourceFile);
FileCopyUtils.copyFiles(new File(dir), sourceFile);
MDUtils.modifyFile(sourceFile); //递归修改文件后缀名并修改文件内容
TOCUtils.insertToc(sourceFile); //递归为文件生成目录
DirUtils.getFormatFilesNames(sourceFile); //递归获取文件名,并将格式化后的内容复制到粘贴板
sourceFile = new File(dirFile, HEXO_DIR);
if (sourceFile.exists()) FileCopyUtils.deleateFiles(sourceFile);
FileCopyUtils.copyFiles(new File(dir), sourceFile);
MDUtils.modifyFile(sourceFile); //递归修改文件后缀名并修改文件内容
TOCUtils.insertToc(sourceFile); //递归为文件生成目录
FrontMatterUtils.insertFrontMatter(sourceFile); //递归为文件生成FrontMatter
scanner.close();
}
}
FileCopyUtils
public class FileCopyUtils {
public static void deleateFiles(String dirFile) {
deleateFiles(new File(dirFile), null, true);
}
public static void deleateFiles(File dirFile) {
deleateFiles(dirFile, null, true);
}
/**
* 删除一个文件,或删除一个目录下的所有文件
*
* @param dirFile 要删除的目录,可以是一个文件
* @param filter 对要删除的文件的匹配规则(不作用于目录),如果要删除所有文件请设为 null
* @param isDeleateDir 是否删除目录,false时只删除目录下的文件而不删除目录
*/
public static void deleateFiles(File dirFile, FilenameFilter filter, boolean isDeleateDir) {
if (dirFile.isDirectory()) {//是目录
for (File file : dirFile.listFiles()) {
deleateFiles(file, filter, isDeleateDir);//递归
}
if (isDeleateDir) {
System.out.println("目录【" + dirFile.getAbsolutePath() + "】删除" + (dirFile.delete() ? "成功" : "失败"));//必须在删除文件后才能删除目录
}
} else if (dirFile.isFile()) {//是文件。注意 isDirectory 为 false 并非就等价于 isFile 为 true
String symbol = isDeleateDir ? "\t" : "";
if (filter == null || filter.accept(dirFile.getParentFile(), dirFile.getName())) {//是否满足匹配规则
System.out.println(symbol + "- 文件【" + dirFile.getAbsolutePath() + "】删除" + (dirFile.delete() ? "成功" : "失败"));
} else {
System.out.println(symbol + "+ 文件【" + dirFile.getAbsolutePath() + "】不满足匹配规则,不删除");
}
} else {
System.out.println("文件不存在");
}
}
public static void copyFiles(String fromFile, String toFile) {
copyFiles(new File(fromFile), new File(toFile), null);
}
public static void copyFiles(File fromFile, File toFile) {
copyFiles(fromFile, toFile, null);
}
/**
* 复制一个文件,或复制一个目录下的所有文件
*
* @param fromFile 要复制的目录,可以是一个文件
* @param toFile 要复制到哪个目录,可以是一个文件
* @param filter 对要复制的文件的匹配规则(不作用于目录),如果要复制所有文件请设为 null
*/
public static void copyFiles(File fromFile, File toFile, FilenameFilter filter) {
if (fromFile.isDirectory()) {//是目录
if (!toFile.exists()) {
toFile.mkdirs();
}
for (File file : fromFile.listFiles()) {
copyFiles(file, new File(toFile, file.getName()), filter);//递归
}
System.out.println("目录【" + fromFile.getAbsolutePath() + "】复制完毕");
} else if (fromFile.isFile()) {//是文件。注意 isDirectory 为 false 并非就等价于 isFile 为 true
if (filter == null || filter.accept(fromFile.getParentFile(), fromFile.getName())) {//是否满足匹配规则
File parentFile = toFile.getParentFile();
if (!parentFile.exists()) {
parentFile.mkdirs();
}
copyFileByByteArray(fromFile, toFile);
System.out.println("\t文件【" + fromFile.getAbsolutePath() + "】复制完毕");
} else {
System.out.println("\t文件【" + fromFile.getAbsolutePath() + "】不满足匹配规则,不复制");
}
} else {
System.out.println("文件不存在");
}
}
public static void copyFileByByteArray(File from, File to) {
try {
FileInputStream inputStream = new FileInputStream(from);
FileOutputStream outputStream = new FileOutputStream(to);
byte[] buf = new byte[1024];
int length;
while ((length = inputStream.read(buf)) != -1) {
outputStream.write(buf, 0, length); //一次读取一个指定长度数组的字节
}
inputStream.close();
outputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
MDUtils
public class MDUtils {
private static final String FILTER = "MD";
private static final String SUFFIX_MD_TXT = ".md.txt";
private static final String SUFFIX_TXT = ".txt";
private static final String SUFFIX_MD = ".md";
private static final String[] REPLACE_STRINGS = new String[] { " " };//特殊字符
private static final String BLANK = " ";//空格
/**
* 递归修改文件后缀名并修改文件内容
*/
public static void modifyFile(File from) {
if (from == null || !from.exists()) {
throw new RuntimeException("源目录或文件不存在");
}
if (from.isFile()) {
if (from.getName().contains(FILTER)) {//只处理带指定标识的文件
copyAndModifyFileContent(from, new File(from.getParent(), getNewName(from)));
}
from.delete();//删除源文件
return;
}
File[] listFiles = from.listFiles();
if (listFiles == null || listFiles.length == 0) {
System.out.println("----------------------" + from.getName() + "中不存在任何文件");
from.delete();//删除空文件夹
return;
}
for (File file : listFiles) {
if (file.isDirectory()) {
modifyFile(file);//递归
} else if (file.isFile()) {
if (file.getName().contains(FILTER)) {//只处理带指定标识的文件
copyAndModifyFileContent(file, new File(file.getParent(), getNewName(file)));
}
file.delete();
}
}
listFiles = from.listFiles();
if (listFiles == null || listFiles.length == 0) {
System.out.println("----------------------" + from.getName() + "的文件全部不符合要求");
from.delete();//删除空文件夹
}
}
/**
* 复制一个文件或目录(不会复制目录下的文件),复制的时候会修改文件中的一些内容
*/
private static void copyAndModifyFileContent(File from, File to) {
if (from == null || !from.exists() || to == null) {
throw new RuntimeException("源文件或目标文件不存在");
}
if (from.equals(to)) {
System.out.println("----------------------源文件和目标文件是同一个" + from.getAbsolutePath());
}
if (from.isDirectory()) {
if (to.isFile()) {
throw new RuntimeException("目录不能复制为文件");
}
if (!to.exists()) {
to.mkdirs();//创建目录
}
return; //没有下面的刘操作
} else {
if (to.isDirectory()) {
throw new RuntimeException("文件不能复制为目录");
}
if (!to.getParentFile().exists()) {
to.getParentFile().mkdirs(); //复制父目录
}
}
try {
BufferedReader bufr = new BufferedReader(new InputStreamReader(new FileInputStream(from), "UTF-8"));
BufferedWriter bufw = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(to), "UTF-8"));
String line;
//另外开辟一个缓冲区,存储读取的一行数据,返回包含该行内容的字符串,不包含换行符,如果已到达流末尾,则返回【 null】
while ((line = bufr.readLine()) != null) {
for (String string : REPLACE_STRINGS) {
line = line.replace(string, BLANK);//替换为空格
}
bufw.write(line);
bufw.write(BLANK + BLANK);//加两个空格
bufw.newLine();// 写入一个行分隔符
bufw.flush();
}
bufr.close();
bufw.close();
} catch (IOException e) {
e.printStackTrace();
}
}
/**
* 获取重命名的文件名
*/
private static String getNewName(File file) {
String name = file.getName();
if (name.endsWith(SUFFIX_MD_TXT)) { //处理指定后缀的文件
name = name.substring(0, name.indexOf(SUFFIX_MD_TXT) + SUFFIX_MD.length());
} else if (name.endsWith(SUFFIX_TXT)) {
name = name.substring(0, name.indexOf(SUFFIX_TXT)) + SUFFIX_MD;
}
return name;
}
}
TOCUtils
public class TOCUtils {
private static final String HEADER_STRING = "#";
private static final char HEADER_CHAR = '#';
private static final String TOC_TITLE = "";//在目录前插入的内容
private static final String REPLACE_TOC = "[TOC]"; //目录要替换的内容
private static final String HEADER_1 = "="; //一级目录
private static final String HEADER_2 = "--"; //二级目录
private static final String SPACES = " ";
private static final String CODES = "%([abcdef]|\\d){2,2}";
private static final String SPECIAL_CHARS = "[\\/?!:\\[\\]`.,()*\"';{}+=<>~\\$|#]";
private static final String DASH = "-";
private static final String EMPTY = "";
private static final String AFFIX = "\t";
/**
* 递归为为文件生成目录
*/
public static void insertToc(File from) {
if (from == null || !from.exists()) {
throw new RuntimeException("源目录或文件不存在");
}
if (from.isFile()) {
insertTocIntoFile(from, from, REPLACE_TOC, Integer.MAX_VALUE);
return;
}
File[] listFiles = from.listFiles();
if (listFiles == null || listFiles.length == 0) {
System.out.println("----------------------" + from.getName() + "中不存在任何文件");
return;
}
for (File file : listFiles) {
if (file.isDirectory()) {
insertToc(file);//递归
} else if (file.isFile()) {
insertTocIntoFile(file, file, REPLACE_TOC, Integer.MAX_VALUE);
}
}
}
/**
* 为文件生成目录
*/
private static void insertTocIntoFile(File from, File to, String replaceAt, int deepLevel) {
BufferedReader reader = null;
try {
reader = new BufferedReader(new InputStreamReader(new FileInputStream(from), "UTF-8"));
String line;//当前行的内容
String previousLine = null;
List<String> contentList = new ArrayList<>();//每一行的内容集合
List<String> titleList = new ArrayList<>();//标题集合
int currentLine = 0;
int patternLineNumber = 1; //目录插在那一行
while ((line = reader.readLine()) != null) {
++currentLine;
boolean skipLine = false;
String trimLineString = line.trim();
if (trimLineString.startsWith(HEADER_STRING)) { //检测到标题
int count = getCharCount(trimLineString, HEADER_CHAR);
if (count < 1 || count > deepLevel) { //层级控制
System.out.println("----------------------------超过最大层级 " + deepLevel);
previousLine = line;
continue;
}
String headerName = trimLineString.substring(count).trim(); //去掉层级后的文字
System.out.println("【" + headerName + "】");
titleList.add(getTitle(count, headerName));
} else if (line.startsWith(HEADER_1) && isNotEmpty(previousLine) && line.replaceAll(HEADER_1, "").isEmpty()) {
//titleList.add(getTitle(1, previousLine.trim()));//暂时不需要
} else if (line.startsWith(HEADER_2) && isNotEmpty(previousLine) && line.replaceAll(HEADER_2, "").isEmpty()) {
//titleList.add(getTitle(2, previousLine.trim()));//暂时不需要
} else if (patternLineNumber <= 1 && line.trim().equals(replaceAt)) {
patternLineNumber = currentLine; //找到这个字符串时就插在这一行(替换这个字符串),找到之后就不再继续找了
skipLine = true;//忽略这一行
}
if (!skipLine) {
contentList.add(line);
}
previousLine = line;
}
closeStream(reader); //必须先关掉这个读取,流才能开启写入流
if (patternLineNumber <= 0) {
System.out.println("----------------------------目录插入位置有误");
return;
}
contentList.add(patternLineNumber - 1, TOC_TITLE);//在指定位置插入目录前面的标题
for (String title : titleList) {
contentList.add(patternLineNumber, title);
patternLineNumber++;
}
writeFile(to, contentList);
} catch (Exception e) {
e.printStackTrace();
} finally {
closeStream(reader);
}
}
/**
* 写内容到指定文件
*/
private static void writeFile(File file, List<String> contentList) {
PrintWriter writer = null;
try {
writer = new PrintWriter(new OutputStreamWriter(new FileOutputStream(file), "UTF-8"));
for (String string : contentList) {
writer.append(string).append("\n");
}
writer.close();
} catch (IOException e) {
e.printStackTrace();
} finally {
closeStream(writer);
}
}
/**
* 关闭流
*/
private static void closeStream(Closeable... closeable) {
for (Closeable c : closeable) {
if (c != null) {
try {
c.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
/**
* 判断字符串非空
*/
private static boolean isNotEmpty(String string) {
return string != null && !string.isEmpty();
}
/**
* 计算字符串中字符的个数
*/
private static int getCharCount(String string, char c) {
int count = 0;
for (int i = 0; i < string.length(); i++) {
if (string.charAt(i) == c) {
++count;
} else {
break;
}
}
return count;
}
/**
* 插入的目录的模型
*/
private static String getTitle(int deepLevel, String headerName) {
StringBuilder title = new StringBuilder();
if (deepLevel > 1) {
for (int i = 0; i < deepLevel - 1; i++) {
title.append(AFFIX);
}
}
String headerLink = headerName.trim()//
.replaceAll(SPACES, DASH)//替换特殊字符,比如必须将空格换成'-'
.replaceAll(CODES, EMPTY)//这一块可能会有问题!!!!!!!!!!!!!!!!!!!!!
.replaceAll(SPECIAL_CHARS, EMPTY)/* .toLowerCase() */;
title.append(DASH).append(SPACES)//格式为【%s- [%s](#%s)】或【缩进- [标题][#链接]】
.append("[").append(headerName).append("]")//
.append("(").append("#")//
.append(headerLink)//
.append(")");
return title.toString();
}
}
FrontMatterUtils
public class FrontMatterUtils {
private static String ROOT_DIR = null;
private final static String[] HEX_DIGITS = { "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "A", "B", "C", "D", "E", "F" };//十六进制下数字到字符的映射数组
private final static String KEY = "wangyang"; // 可以自定义生成 MD5 加密字符传前的混合 KEY
private final static String[] CHARS = new String[] { "a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t",
"u", "v", "w", "x", "y", "z", "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M",
"N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z" };// 要使用生成 URL 的字符
/**
* 递归为为文件生成FrontMatter
*/
public static void insertFrontMatter(File from) {
if (from == null || !from.exists()) {
throw new RuntimeException("源目录或文件不存在");
} else if (ROOT_DIR == null) {
ROOT_DIR = from.getAbsolutePath();
}
if (from.isFile()) {
writeFrontMatter(from);
return;
}
File[] listFiles = from.listFiles();
if (listFiles == null || listFiles.length == 0) {
System.out.println("----------------------" + from.getName() + "中不存在任何文件");
return;
}
for (File file : listFiles) {
if (file.isDirectory()) {
insertFrontMatter(file);//递归
} else if (file.isFile()) {
writeFrontMatter(file);
}
}
}
//写内容到指定文件
public static void writeFrontMatter(File file) {
String title = file.getName().substring(0, file.getName().indexOf(".md"));
String date = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date(file.lastModified()));
String dir = file.getParent().substring(ROOT_DIR.length() + 1).replace("\\", "/");
StringBuilder builder = new StringBuilder();
builder.append("---").append(System.lineSeparator())//
.append("title: ").append(title).append(System.lineSeparator())//标题
.append("date: ").append(date).append(System.lineSeparator())//生成日期
.append("bqtdir: ").append(dir).append("/").append(shortUrl(title)).append(System.lineSeparator())//自定义路径
.append("categories:").append(System.lineSeparator());//分类
for (String category : dir.split("/")) {
builder.append(" - ").append(category).append(System.lineSeparator());//路径分类
}
builder.append("---").append(System.lineSeparator()).append(System.lineSeparator());
try {
FileInputStream inputStream = new FileInputStream(file);
byte[] content = new byte[inputStream.available()];
inputStream.read(content); //一次读取全部字节
inputStream.close();
FileOutputStream outputStream = new FileOutputStream(file);
outputStream.write(builder.toString().getBytes("UTF-8"));
outputStream.write(content);
outputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
public static String shortUrl(String url) {
return shortUrls(url)[0];
}
/**会产生4 组6 位字符串,任意一组都可以作为当前字符串的短链接地址*/
public static String[] shortUrls(String url) {
String hex = md5(KEY + url);// 对传入网址进行 MD5 加密
String[] resUrl = new String[4];//得到 4组短链接字符串
for (int i = 0; i < 4; i++) {
String sTempSubString = hex.substring(i * 8, i * 8 + 8); // 把加密字符按照 8 位一组 16 进制与 0x3FFFFFFF 进行位与运算
long lHexLong = 0x3FFFFFFF & Long.parseLong(sTempSubString, 16);// 这里需要使用 long 型来转换
String outChars = ""; //循环获得每组6位的字符串
for (int j = 0; j < 6; j++) {
long index = 0x0000003D & lHexLong; // 取得字符数组 chars 索引
outChars += CHARS[(int) index];// 把取得的字符相加
lHexLong = lHexLong >> 5;// 每次循环按位右移 5 位
}
resUrl[i] = outChars;// 把字符串存入对应索引的输出数组
}
return resUrl;
}
/**对字符串进行MD5编码*/
public static String md5(String originString) {
if (originString != null) {
try {
MessageDigest md5 = MessageDigest.getInstance("MD5");//创建具有指定算法名称的信息摘要
byte[] results = md5.digest(originString.getBytes("UTF-8"));//使用指定的字节数组对摘要进行最后更新,然后完成摘要计算
String result = byteArrayToHexString(results);//将得到的字节数组变成字符串返回
return result;
} catch (Exception e) {
e.printStackTrace();
}
}
return null;
}
//轮换字节数组为十六进制字符串
private static String byteArrayToHexString(byte[] b) {
StringBuffer resultSb = new StringBuffer();
for (int i = 0; i < b.length; i++) {
resultSb.append(byteToHexString(b[i]));
}
return resultSb.toString();
}
//将一个字节转化成十六进制形式的字符串
private static String byteToHexString(byte b) {
int n = b;
if (n < 0) n = 256 + n;
int d1 = n / 16;
int d2 = n % 16;
return HEX_DIGITS[d1] + HEX_DIGITS[d2];
}
}
DirUtils
public class DirUtils {
private static final String WEBSITE = "https://github.com/baiqiantao/MyAndroidBlogs/blob/master/";
private static final String SPACE = " ";
private static final String SPACE_FORMAT = "%20";
private static final String[] EXCLUDE_FILES = new String[] { ".git", "README.md" };
private static final String SUFFIX_MD = ".md";
/**
* 获取指定目录及其子目录下的文件的文件名,并对文件名进行格式化,并存储到一个指定的集合中,并将内容复制到粘贴板
*/
public static List<String> getFormatFilesNames(File from) {
List<String> filePathList = new ArrayList<>();
getDirFormatFilesNames(filePathList, from, 0);
StringBuilder sBuilder = new StringBuilder();
for (String string : filePathList) {
System.out.print(string);
sBuilder.append(string);
}
setSysClipboardText(sBuilder.toString());
return filePathList;
}
/**
* 获取指定目录及其子目录下的文件的文件名,并对文件名进行格式化,并存储到一个指定的集合中
*
* @param filePathList 将结果保存到指定的集合中
* @param from 要遍历的目录
* @param curLeval 记录当前递归所在层级
*/
private static void getDirFormatFilesNames(List<String> filePathList, File from, int curLeval) {
if (from == null || !from.exists()) {
throw new RuntimeException("源目录或文件不存在");
} else if (isExcludeFile(from.getName())) {
System.out.println("----------------------" + "忽略文件" + from.getName());
return;
} else {
filePathList = filePathList == null ? new ArrayList<String>() : filePathList;
filePathList.add(getTitle(curLeval, from));
}
curLeval++;
File[] files = from.listFiles();
if (files == null || files.length == 0) {
System.out.println("----------------------" + from.getName() + "中不存在任何文件");
return;
}
for (File file : files) {
if (file.isDirectory()) {
getDirFormatFilesNames(filePathList, file, curLeval);//递归
} else if (file.isFile() && !isExcludeFile(file.getName())) {
filePathList.add(getTitle(curLeval, file));
}
}
}
/**
* 是否是忽略的文件
*/
private static boolean isExcludeFile(String fileName) {
for (String name : EXCLUDE_FILES) {
if (name.equals(fileName)) {
return true;
}
}
return false;
}
/**
* 将字符串复制到剪切板
*/
private static void setSysClipboardText(String writeMe) {
Clipboard clip = Toolkit.getDefaultToolkit().getSystemClipboard();
Transferable tText = new StringSelection(writeMe);
clip.setContents(tText, null);
}
/***
* 格式化目录
*/
private static String getTitle(int level, File file) {
StringBuilder sb = new StringBuilder();
StringBuilder parentPath = new StringBuilder();
File parent = file;
for (int x = 1; x < level; x++) {
sb.append("\t");
parent = parent.getParentFile();//逐级获取父文件
parentPath.insert(0, parent.getName() + "/");//在前面插入父文件的文件名
}
sb.append("-").append(" ")//无序列表
.append("[")//超链接显示的字符
.append(file.getName().endsWith(SUFFIX_MD) ? file.getName().substring(0, file.getName().lastIndexOf(SUFFIX_MD)) : file.getName())//
.append("]")//
.append("(")//拼接超链接
.append(WEBSITE)//前缀
.append(parentPath.toString())//父目录
.append(file.getName().replaceAll(SPACE, SPACE_FORMAT))//文件名
.append(")")//
.append("\n");
return sb.toString();
}
}
2018-10-23
本文来自博客园,作者:白乾涛,转载请注明原文链接:https://www.cnblogs.com/baiqiantao/p/9838862.html