正则表达式需求：匹配含description字段的多属性文本内容

Hey there! Let's figure out how to extract those Attribute blocks that have a description field, keeping just the attribute header and the description itself. Here's a straightforward solution:

First, here's the regular expression you can use:

(\[Attribute [^\]]+\]).*?(description=[^\[]+)

Breakdown of the regex: #

• (\[Attribute [^\]]+\]): This captures the full attribute header (like [Attribute Person]). The [^\]]+ part matches any characters except the closing square bracket, so it works even if your attribute name has spaces or special characters (as long as it doesn't include ]).
• .*?: The non-greedy wildcard matches any characters in between the header and the description field—this ensures we don't accidentally grab content from the next attribute block.
• (description=[^\[]+): This captures the entire description field, stopping right before the next [ (which signals the start of another attribute block).

Example Usage (JavaScript) #

Here's how you'd implement this to get your desired output:

const inputText = "[Attribute Person] name=John description=This is a person age=16 [Attribute Things] name=Pencil description=This is an object [Attribute Something] name=John [Attribute Animal] name=Tom description=Just a regular cat age=2";
const regexPattern = /(\[Attribute [^\]]+\]).*?(description=[^\[]+)/g;
const extractedResults = [];

let match;
while ((match = regexPattern.exec(inputText)) !== null) {
  // Combine the captured header and description
  extractedResults.push(`${match[1]} ${match[2]}`);
}

console.log(extractedResults);

Output:

[
  "[Attribute Person] description=This is a person",
  "[Attribute Things] description=This is an object",
  "[Attribute Animal] description=Just a regular cat"
]

This regex will skip any attribute blocks that don't have a description field (like [Attribute Something] in your input), which is exactly what you need.

内容的提问来源于stack exchange，提问作者rredondo