import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;

/**
 * PDF转SWF工具
 */
public class PdfToSwf {

	/**
	 * pdf文件后缀名
	 */
	public static final String FILE_NAME_OF_PDF = "pdf";
	/**
	 * swf文件后缀名
	 */
	public static final String FILE_NAME_OF_SWF = "swf";

	/**
	 * 获得文件的路径
	 * 
	 * @param file
	 *            文件的路径 ,如："c:/test/test.swf"
	 * @return 文件的路径
	 */
	public static String getFilePath(String file) {
		String result = file.substring(0, file.lastIndexOf("/"));
		if (file.substring(2, 3) == "/") {
			result = file.substring(0, file.lastIndexOf("/"));
		} else if (file.substring(2, 3) == "\\") {
			result = file.substring(0, file.lastIndexOf("\\"));
		}
		return result;
	}

	/**
	 * 新建一个目录
	 * 
	 * @param folderPath
	 *            新建目录的路径 如："c:\\newFolder"
	 */
	public static void newFolder(String folderPath) {
		try {
			File myFolderPath = new File(folderPath.toString());
			if (!myFolderPath.exists()) {
				myFolderPath.mkdir();
			}
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	/**
	 * 转化pdf为swf文件
	 * 
	 * @param sourcePath
	 *            pdf文件路径 ，如："c:/hello.pdf"
	 * @param destPath
	 *            swf文件路径,如："c:/test/test.swf"
	 * @return 正常情况下返回：0，失败情况返回：1
	 * @throws IOException
	 */
	public static int convertPDF2SWF(String sourcePath, String destPath)
			throws IOException {
		// 如果目标文件的路径是新的，则新建路径
		newFolder(getFilePath(destPath));

		// 源文件不存在则返回
		File source = new File(sourcePath);
		if (!source.exists()) {
			return 0;
		}

		String path = PropertiesUtil.getValueByPropertyName(
				ClassLoader.getSystemResourceAsStream("toPdf.properties"), "SWFTOOLS_PATH");

		// 调用pdf2swf命令进行转换
		String command = path
				+ "/pdf2swf.exe  -t \""
				+ sourcePath
				+ "\" -o  \""
				+ destPath
				+ "\" -s flashversion=9 -s languagedir=D:\\xpdf\\xpdf-chinese-simplified ";
		// 调用外部程序
		Process process = Runtime.getRuntime().exec(command);
		final InputStream is1 = process.getInputStream();
		new Thread(new Runnable() {
			public void run() {
				BufferedReader br = new BufferedReader(new InputStreamReader(
						is1));
				try {
					while (br.readLine() != null)
						;
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
		}).start(); // 启动单独的线程来清空process.getInputStream()的缓冲区
		InputStream is2 = process.getErrorStream();
		BufferedReader br2 = new BufferedReader(new InputStreamReader(is2));
		// 保存输出结果流
		StringBuilder buf = new StringBuilder();
		String line = null;
		while ((line = br2.readLine()) != null)
			// 循环等待ffmpeg进程结束
			buf.append(line);
		while (br2.readLine() != null)
			;
		try {
			process.waitFor();
		} catch (InterruptedException e) {
			e.printStackTrace();
		}
		return process.exitValue();
	}

	/**
	 * pdf文件转换为swf文件操作
	 * 
	 * @param sourcePath
	 *            pdf文件路径 ，如："c:/hello.pdf"
	 * @param destPath
	 *            swf文件路径,如："c:/test/test.swf"
	 * @return
	 */
	public static boolean pdf2swf(String sourcePath, String destPath) {
		boolean flag = false;
		try {
			PdfToSwf.convertPDF2SWF(sourcePath, destPath);
			flag = true;
		} catch (Exception ex) {
			flag = false;
		}
		return flag;
	}

}