用于标记化由逗号分隔的Key = Value对的列表的正则表达式，其中Value本身可能包含逗号

Question

I have a requirement where I need to tokenise the list of key=value pairs separated by comma. Ex: $val1=abc, $val2=cde, $val3=efg

Expected Output: 6 tokens

1. $val1
2. abc
3. $val2
4. cde
5. $val3
6. efg

I am using the regex ([^\\" =,]*(\\"[^\\"]*\\")[^\\" =,]*)|[^\\" =,]+ which solves the above problem. But it is not handling the case when the value of key= value pair has a comma in it.

Ex: $val1=abc,AB, $val2=cde, $val3=efg

Expected Output: 6 tokens

1. $val1
2. abc,AB
3. $val2
4. cde
5. $val3
6. efg

But with the above regex am getting the output as shown below: Output: 7 tokens

1. $val1
2. abc
3. AB
4. $val2
5. cde
6. $val3
7. efg

Can someone provide a proper regular expression which fits for the above case.

Answer 1

[^= ]+(?! \$)

See it in action

Reads any amount of characters, that are not = or space and are not followed by a space and $ .