import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.util.ArrayList;


public class FindNoSpace {
    
    public static void main(String[] args) throws Exception {
        FindNoSpace instance = new FindNoSpace();
        {
            String[] folderNames = {"E:\\MyJava\\src"};
            ArrayList fileList = instance.getFileListByFileNames(folderNames, false);
            fileList = instance.getFileListByParentFolder(fileList, new String[] {".java"}, true);
            instance.findNoSpaceFunction(fileList);
        }
//        {
//            String[] folderNames = {"E:\\MyJava\\src\\F01.java"};
//            ArrayList fileList = instance.getFileListByFileNames(folderNames, true);
//            instance.findNoSpaceFunction(fileList);
//        }
    }
    
    public ArrayList getFileListByParentFolder(ArrayList fileList, String[] endWith, boolean hasChildFoldersChildrens) {
        boolean hasFolder = true;
        while (hasFolder) {
            hasFolder = false;
            if (fileList.size() <= 0) {
                break;
            }
            ArrayList newFileList = new ArrayList();
            for (int i = 0; i < fileList.size(); i++) {
                File fTem = (File)fileList.get(i);
                if (fTem.isDirectory()) {
                    hasFolder = true;
                    File[] filelisttem = fTem.listFiles();
                    for (int j = 0; j < filelisttem.length; j++) {
                        if (filelisttem[j].isDirectory() || isEndWith(filelisttem[j].getName(), endWith))
                            newFileList.add(filelisttem[j]);
                    }
                } else if (fTem.isFile()) {
                    if (isEndWith(fTem.getName(), endWith))
                        newFileList.add(fTem);
                }
            }
            fileList = newFileList;
            if (!hasChildFoldersChildrens) {
                newFileList = new ArrayList();
                for (int i = 0; i <= fileList.size(); i++) {
                    File f = (File)fileList.get(i);
                    if (f.isFile()) {
                        newFileList.add(f);
                    }
                }
                fileList = newFileList;
                break;
            }
        }
        return fileList;
    }
    
    public ArrayList getFileListByFileNames(String[] fileNames, boolean onlyGetFile) {
        ArrayList fileList = new ArrayList();
        for (int i = 0; i < fileNames.length; i++) {
            File f = new File(fileNames[i]);
            if (onlyGetFile && f.isFile()) {
                fileList.add(f);
            } else {
                fileList.add(f);
            }
        }
        return fileList;
    }
    
    private boolean isEndWith(String str, String[] endWith) {
        if (endWith.length <= 0) {
            return true;
        }
        str = str.toLowerCase();
        for (int i = 0; i < endWith.length; i++) {
            if (str.endsWith(endWith[i])) {
                return true;
            }
        }
        return false;
    }
    
    public void findNoSpaceFunction(ArrayList fileList) throws Exception{
        
        String line = "";
        String[] macher = {".*\\w(\\{|==|!=|<=|>=|&&|\\*=|/=|\\+=|-=|%=|^=|\\+|\\-|\\*|/|%|=|<|>)(\\s|\\t).*",
                            ".*(\\s|\\t)(==|!=|<=|>=|&&|\\*=|/=|\\+=|-=|%=|^=|\\+|\\-|\\*|/|%|=|<|>)[\\w|-].*",
                            ".*\\w(==|!=|<=|>=|&&|\\*=|/=|\\+=|-=|%=|^=|\\+|\\-|\\*|/|%|=|<|>)\\w.*",
                            ".*(\\s|\\t)if\\(.*"};
        int onefilelinecount = 0;
        boolean isPrintfile;
        for (int i = 0; i < fileList.size(); i++) {
            onefilelinecount = 0;
            isPrintfile = true;
            File f = (File)fileList.get(i);
            BufferedReader bfreader = new BufferedReader(new FileReader(f));
            while (bfreader.ready()) {
                onefilelinecount++;
                line = bfreader.readLine();
                if (line.trim().length() <= 0) {
                    continue;
                }
                char lt = line.trim().charAt(0);
                if ("{}0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz".indexOf(lt) < 0) {
                    continue;
                }
                if (line.matches(".*\\s-\\d.*")) {
                    continue;
                }
                line = line.split("//")[0];
                line = line.split("/*")[0];
                if (line.indexOf('"') >= 0) {
                    String[] liness = line.split("\"");
                    for (int lc = 0; lc < liness.length; lc++) {
                        if (lc % 2 == 0) {
                            line += liness[lc];
                        }
                    }
                }
                String teststr = line.replaceAll("\\+\\+", "\\-\\-");
                teststr = teststr.replaceAll("\\-\\-", "OO");
                for (int j = 0; j < macher.length; j++) {
                    if (teststr.matches(macher[j]) || teststr.indexOf("if(") >= 0) {
                        if (isPrintfile) {
                            isPrintfile = false;
                            System.out.println(f.getAbsolutePath());
                        }
                        System.out.println(onefilelinecount + "\t" + line);
                        break;
                    }
                }
            }
        }
        System.out.println("Find Over");
    }
}