截断并添加...如果字符串超过x个字符

let maxLength = x;
let truncatedString = "";
if (originalString.length > maxLength) {
  truncatedString = originalString.substring(0, maxLength) + "...";
} else {
  truncatedString = originalString;
}

int maxLength = x;
String truncatedString = "";
if (originalString.length() > maxLength) {
  truncatedString = originalString.substring(0, maxLength) + "...";
} else {
  truncatedString = originalString;
}

const expect = require("chai").expect;

describe("String Truncation", () => {
  it("should truncate and add ... if the string is longer than x characters", () => {
    let originalString = "Lorem ipsum dolor sit amet, consectetur adipiscing elit.";
    let maxLength = x;
    let truncatedString = "";

    if (originalString.length > maxLength) {
      truncatedString = originalString.substring(0, maxLength) + "...";
    } else {
      truncatedString = originalString;
    }

    expect(truncatedString.length).to.be.at.most(maxLength + 3); // 3 for "..."
  });
});

SET @originalString = 'Lorem ipsum dolor sit amet, consectetur adipiscing elit.';
SET @maxLength = x;
SET @truncatedString = '';

IF LENGTH(@originalString) > @maxLength THEN
  SET @truncatedString = CONCAT(SUBSTRING(@originalString, 1, @maxLength), '...');
ELSE
  SET @truncatedString = @originalString;
END IF;

SELECT @truncatedString AS truncated_string;

originalString="Lorem ipsum dolor sit amet, consectetur adipiscing elit."
maxLength=x

if [[ ${#originalString} -gt $maxLength ]]; then
  truncatedString="${originalString:0:maxLength}..."
else
  truncatedString="$originalString"
fi

echo "$truncatedString"