使用分隔符拆分带引号的字符串 [英] Split a quoted string with a delimiter

问题描述

我想拆分带分隔符空格的字符串。但它应该智能地处理引用的字符串。例如。对于像

I want to split a string with a delimiter white space. but it should handle quoted strings intelligently. E.g. for a string like

"John Smith" Ted Barry 

它应该返回三个字符串John Smith，Ted和Barry。

It should return three strings John Smith, Ted and Barry.

推荐答案

搞乱之后，你可以使用正则表达式。运行相当于全部匹配：

After messing around with it, you can use Regex for this. Run the equivalent of "match all" on:

((?<=("))[\w ]*(?=("(\s|$))))|((?<!")\w+(?!"))

Java示例：

import java.util.regex.Pattern;
import java.util.regex.Matcher;

public class Test
{ 
    public static void main(String[] args)
    {
        String someString = "\"Multiple quote test\" not in quotes \"inside quote\" \"A work in progress\"";
        Pattern p = Pattern.compile("((?<=(\"))[\\w ]*(?=(\"(\\s|$))))|((?<!\")\\w+(?!\"))");
        Matcher m = p.matcher(someString);

        while(m.find()) {
            System.out.println("'" + m.group() + "'");
        }
    }
}

输出：

'Multiple quote test'
'not'
'in'
'quotes'
'inside quote'
'A work in progress'

正则表达式细分与示例上面使用的可以在这里查看：

The regular expression breakdown with the example used above can be viewed here:

http：// regex101 .com / r / wM6yT9

尽管如此，正则表达式不应该是解决方案为了一切 - 我只是玩得开心。这个例子有很多边缘情况，比如处理unicode字符，符号等。你最好使用一个久经考验的库来完成这类任务。在使用这个答案之前，请先看看其他答案。

With all that said, regular expressions should not be the go to solution for everything - I was just having fun. This example has a lot of edge cases such as the handling unicode characters, symbols, etc. You would be better off using a tried and true library for this sort of task. Take a look at the other answers before using this one.

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