如何将字符串分解为参数，尊重引号？

Question

可能的重复：
当没有被单引号或双引号包围时，使用空格分割字符串的正则表达式

我怎样才能打破这样的字符串：

String args = "\"file one.txt\" filetwo.txt some other \"things here\"";

在尊重引号的同时进入其参数/参数？

所以在上面的例子中，参数将被分解为：

args[0] = file one.txt
args[1] = filetwo.txt
args[2] = some
args[3] = other
args[4] = things here

我了解如何使用 split(" ")，但我想合并引号中的术语。

Answer 1

假设您不必使用正则表达式并且您的输入不包含嵌套引号，您可以在对 String 字符的一次迭代中实现这一点：

String data = "\"file one.txt\" filetwo.txt some other \"things here\"";

List<String> tokens = new ArrayList<String>();
StringBuilder sb = new StringBuilder();

boolean insideQuote = false;

for (char c : data.toCharArray()) {

    if (c == '"')
        insideQuote = !insideQuote;

    if (c == ' ' && !insideQuote) {//when space is not inside quote split..
        tokens.add(sb.toString()); //token is ready, lets add it to list
        sb.delete(0, sb.length()); //and reset StringBuilder`s content
    } else 
        sb.append(c);//else add character to token
}
//lets not forget about last token that doesn't have space after it
tokens.add(sb.toString());

String[] array=tokens.toArray(new String[0]);
System.out.println(Arrays.toString(array));

输出：

["file one.txt", filetwo.txt, some, other, "things here"]