The technical principle analysis of the technical principles of the Minimatch framework in the Java library
Minimatch is a lightweight string matching framework, which is mainly used in the Java library to perform pattern matching.It uses simple syntax to provide a flexible and efficient matching method that can meet the needs of pattern matching in various application scenarios.
The technical principles of this framework mainly include two core concepts: patterns and matching.
The pattern is used to describe the string rules we want to match.It can use the passage and special characters to represent various matching rules.The passwords include the star number (*) and the question mark (?), The star number indicates the character sequence of any length, and the question mark indicates any single character.Special characters include square brackets ([]) and exclamation marks (!), Square brackets indicate the specified character range, and the exclamation mark indicates reverse matching.Through combination of these passages and special characters, we can build more flexible pattern rules.
Matching refers to comparing the given string with mode to determine whether they match.Minimatch provides a Match method for matching operations.This method accepts two parameters: string and mode to be matched.During the matching process, the pattern will be analyzed first to convert it into a matching tree.Then, by traversing the characters in the input string, and the search for each character matching the tree to determine whether it can be fully matched.During the search process, the matching tree provides an efficient way to process the pattern and special characters of the pattern, thereby accelerating the matching speed.
The following is a Java sample code that uses the MINIMATCH framework to match the string matching:
import com.github.javafaker.Faker;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Pattern;
import us.betterindex.micromatch.Minimatch;
public class MinimatchExample {
public static void main(String[] args) {
// Create a Faker object to generate random string
Faker faker = new Faker();
// Create a minimatch object and specify the mode rules
Minimatch minimatch = Minimatch.create("*.txt");
// Generate a set of random string
List<String> strings = new ArrayList<>();
for (int i = 0; i < 10; i++) {
strings.add(faker.file().fileName("txt"));
}
// matching string
for (String string : strings) {
boolean isMatch = minimatch.match(string);
System.out.println(string + " is " + (isMatch ? "matched" : "not matched"));
}
}
}
In the above example, we first generated a set of random file name string with the Faker library.Then create a Minimatch object and specify the pattern rules as "*.txt".Finally, by traversing the random string and matching the MATCH method of Minimatch to output the results.
By using the Minimatch framework, we can easily implement the mode matching function of the string, allowing us to process the needs of the string matching faster and efficiently.