我正在尝试将文件从一个文件拆分为4个不同的文件。因此,我将文件除以某个“ x”值,然后将其写入该值,直到从该值开始到下一个文件为止,直到文件内容结束为止。
我正在使用缓冲区读取器检查文件中的一些x值,并检查内容是否等于x值并进行拆分。
分裂即将到来,但以另一种方式,就像它正在读取文件并写入直到行号为“ x”一样。但是我需要所有的行,直到文件中出现“ x”值为止。
我在文件中有一个类似于开始时间hh:mm:ss的时间,我正在用我的x值与hh:mm:ss进行检查,并像下面那样进行分割
// inputs to the below method
// filePath = "//somepath";
// splitlen = 30;
// name ="somename"; */
public void split(String FilePath, long splitlen, String name) {
long leninfile = 0, leng = 0;
int count = 1, data;
try {
File filename = new File(FilePath);
InputStream infile = new BufferedInputStream(new FileInputStream(filename));
data = infile.read();
BufferedReader br = new BufferedReader(new InputStreamReader(infile));
while (data != -1) {
filename = new File("/Users//Documents/mysrt/" + count + ".srt");
OutputStream outfile = new BufferedOutputStream(new FileOutputStream(filename));
String strLine = br.readLine();
String[] atoms = strLine.split(" --> ");
if (atoms.length == 1) {
// outfile.write(Integer.parseInt(strLine + "\n"));
}
else {
String startTS = atoms[0];
String endTS = atoms[1];
System.out.println(startTS + "\n");
System.out.println(endTS + "\n");
String startTime = startTS.replace(",", ".");
String endTime = endTS.replace(",", ".");
System.out.println("startTime" + "\n" + startTime);
System.out.println("endTime" + "\n" + endTime);
String [] arrOfStr = endTime.split(":");
System.out.println("=====arrOfStr=====");
int x = Integer.parseInt(arrOfStr[1]);
System.out.println(arrOfStr[1]);
System.out.println("===x repeat==");
System.out.println(x);
System.out.println("===splitlen repeat==");
System.out.println(splitlen);
System.out.println(data);
System.out.println(br.readLine());
System.out.println(br.read());
while (data != -1 && x < splitlen) {
outfile.write(br.readLine().getBytes());
data = infile.read();
x++;
}
System.out.println("===== out of while x =====");
System.out.println(br.readLine());
System.out.println(x);
leninfile += leng;
leng = 0;
outfile.close();
firstPage = false;
firstPage = true;
count++;
splitlen = splitlen + 30;
System.out.println("=====splitlen after=====" +splitlen);
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
我正在增加一些时间来读取文件中的下一行并写入另一个文件中。
这里splitlen为30,因此它将数据写入新文件中直到30行。然后它以splitlen + 30(即60)递增。但是,它正在读取下60行并写入下一个文件。
但是我需要使用文件内容中提供的时间检查这个splitlen,我应该分割该行。
请向我建议我做错了什么。如果您提供摘录,将不胜感激。
谢谢。
答案 0 :(得分:1)
我想这就是你想要的
public void split(String filePath, long splitLen, String name) {
File fileSource = new File(filePath);
int count = 0;
boolean endOfFile = false;
String lineSeparator = System.getProperty("line.separator");
int hour = 0; // an accumulator for hours
int min = 0; // an accumulator for minutes
int sec = (int) splitLen; // an accumulator for seconds
int _hour = 0; // hours from the file
int _min = 0; // minutes from the file
int _sec = 0; // seconds from the file
try ( // try with resources to close files automatically
FileReader frSource = new FileReader(fileSource);
BufferedReader buffSource = new BufferedReader(frSource);
) {
String strIn = null;
while(!endOfFile) {
File fileOut = new File("f:\\test\\mysrt\\" + count + ".srt");
try ( // try with resources to close files automatically
FileWriter fwOut = new FileWriter(fileOut);
) {
if (strIn != null) {
// write out the last line read to the new file
fwOut.write(strIn + lineSeparator);
}
for (int i = 0; i < splitLen; i++) {
strIn = buffSource.readLine();
if (strIn == null) {
endOfFile = true; // stop the while loop
break; // exit the for loop
}
if (strIn.indexOf("-->") > 0) {
String endTime = strIn.split("-->")[1];
_hour = extractHours(endTime); // get the hours from the file
_min = extractMinutes(endTime); // get the minutes from the file
_sec = extractSeconds(endTime); // get the seconds from the file
if (_hour >= hour && _min >= min && _sec >= sec) { // if the file time is greater than our accumulators
sec += splitLen; // increment our accumulator seconds
if (sec >= 60) { // if accumulator seconds is greater than 59, we need to convert it to minutes and seconds
min += sec / 60;
sec = sec % 60;
}
if (min >= 60) { if accumulator minutes is greater than 59, we need to convert it to hours and minutes
hour += min / 60;
min = min % 60;
}
break; // break out of the for loop, which cause the file to be completed and a new file started.
}
}
fwOut.write(strIn + lineSeparator); // write out to the new file
}
fwOut.flush();
}
count++;
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
private int extractMinutes(String time) {
// You need to implement this, I don't know the format of your time
return 0;
}
private int extractSeconds(String time) {
// You need to implement this, I don't know the format of your time
return 0;
}
答案 1 :(得分:1)
您的代码存在问题,因为您正在查看的时间戳记是HH:MM:ss,但是使用splitlen
和x
变量时,您只能使用分钟。
因此,您需要同时记录小时和分钟,也许可以通过某些DateTime类来完成,但这是一个简单的int解决方案
//somewhere at the top
int hour = 0;
int minutes = 30;
//where you today increase splitlen
minutes += 30;
if (minutes == 60) {
hour++;
minutes = 0;
}
//parse also hours
int y = Integer.parseInt(arrOfStr[0]);
int x = Integer.parseInt(arrOfStr[1]);
//you need to rewrite this to compare x and y against hour and minutes
while (data != -1 && x < splitlen) {
因此,您现在不再需要30、60、90,...分钟,而是00:30、01:00、01:30,依此类推。当然,除非您已经这样做,否则您还必须准备好处理整整一分钟都无法进入的情况。
checkTime
当然是这里的关键方法,最好是在将文件拆分为类成员时进行最后一小时和一分钟的操作,但是当然也可以将它们作为参数从{{ 1}}。
更新
这里是split()
方法的简化版本,以提供有关如何解决此问题的示例,它虽然不完整,但是应该是解决此问题的良好起点。我尝试利用split
文件的构造方式,并利用上述逻辑来确定何时打开新的输出文件。
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