正则表达式匹配命令行中以逗号分隔的多个参数

Question

I am working on a C# regex to achieve the following result.

command value1 valu2 : param1=value1, param2=[valu2], param3 = vaule3 /option1 |option2

Group1: param1=value1
Group2: param2=[valu2]
Group3: param3 = vaule3

My current regex:

(\w+\s*\=\s*\w+)(,\w+\s*\=\s*[a-zA-Z0-9\]\[]+)*

I am missing to include the following:

1. Should start with:
2. Should allow [] char into the value section
3. Should stop at / or | or end of line

Here is test test: https://regex101.com/r/5kPXAz/1

I have used examples from:

• Regex-to-match-comma-separated-values
• Regex-for-comma-delimited-list

Answer 1

The pattern that you tried does not match all values because matching the square brackets using the character class will only happen in the second part of the pattern after matching a comma first.

You could use an alternation to match either word chars surrounded by square brackets or only word chars and make use of a positive lookahead to assert either a / or , or the end of the line.

\w+\s*=\s*(?:\[\w+\]|\w+)(?=\s*[,/]|$)

Explanation

• \w+\s*=\s* Match 1+ word chars and an equals sign between optional whitespace chars
• (?: Non capture group
  • \[\w+\] Match [ 1+ word chars and ]
  • | Or
  • \w+ Match 1+ word chars
• ) Close group
• (?=\s*[,/]|$) Positive lookahead, assert what is on the right is either , or / or end of line

.NET regex demo