Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
//License from project: Apache License 

import java.io.BufferedReader;
import java.io.StringReader;

import javax.xml.stream.XMLInputFactory;
import javax.xml.stream.XMLStreamConstants;
import javax.xml.stream.XMLStreamReader;

public class Main {
    /**
     * 
     * Checks indentation (over a single line - multipline text nodes is not supported)
     * 
     * @param out
     * @param indentSize
     * @return
     * @throws Exception
     */

    public static boolean isIndented(String out, int indentSize) throws Exception {
        BufferedReader reader = new BufferedReader(new StringReader(out));

        boolean indentated = false;

        int level = 0;
        int line = 0;

        String string = reader.readLine();
        while (string != null) {
            int newLevel = 0;
            while (newLevel < string.length()) {
                if (!Character.isWhitespace(string.charAt(newLevel))) {
                    break;
                }
                newLevel++;
            }
            if ((newLevel % indentSize) != 0) {
                throw new IllegalArgumentException("Unexpected " + newLevel + " whitespace chars at line " + line);
            }
            if (Math.abs(level - newLevel) > indentSize) {
                throw new IllegalArgumentException("Unexpected jump from " + level + " to " + newLevel
                        + " whitespace chars at line " + line + " for indenting with " + indentSize + " chars");
            }
            level = newLevel;

            string = reader.readLine();
            line++;

            if (level > 0) {
                indentated = true;
            }
        }

        if (!indentated) {
            // see if a simple xml piece
            XMLInputFactory inputFactory = XMLInputFactory.newInstance();
            XMLStreamReader parser = inputFactory.createXMLStreamReader(new StringReader(out));

            int elementMaxLevel = -1;
            int elementLevel = 0;
            do {
                int event = parser.next();
                if (event == XMLStreamConstants.START_ELEMENT) {
                    elementLevel++;

                    if (elementMaxLevel < elementLevel) {
                        elementMaxLevel = elementLevel;
                    }
                } else if (event == XMLStreamConstants.END_ELEMENT) {
                    elementLevel--;
                }
            } while (parser.hasNext());

            if (elementMaxLevel > 1) { // should be indentated
                return false;
            }
            return true;
        }

        return indentated;
    }
}