diff -r 88207b860cba -r 623c340058f3 src/main/java/de/uapcore/lightpit/PathPattern.java --- a/src/main/java/de/uapcore/lightpit/PathPattern.java Mon Jan 04 17:30:10 2021 +0100 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,125 +0,0 @@ -package de.uapcore.lightpit; - -import java.util.ArrayList; -import java.util.List; - -public final class PathPattern { - - private final List nodePatterns; - private final boolean collection; - - /** - * Constructs a new path pattern. - * The special directories . and .. are disallowed in the pattern. - * - * @param pattern - */ - public PathPattern(String pattern) { - nodePatterns = parse(pattern); - collection = pattern.endsWith("/"); - } - - private List parse(String pattern) { - - var nodes = new ArrayList(); - var parts = pattern.split("/"); - - for (var part : parts) { - if (part.isBlank()) continue; - if (part.equals(".") || part.equals("..")) - throw new IllegalArgumentException("Path must not contain '.' or '..' nodes."); - nodes.add(part); - } - - return nodes; - } - - /** - * Matches a path against this pattern. - * The path must be canonical in the sense that no . or .. parts occur. - * - * @param path the path to match - * @return true if the path matches the pattern, false otherwise - */ - public boolean matches(String path) { - if (collection ^ path.endsWith("/")) - return false; - - var nodes = parse(path); - if (nodePatterns.size() != nodes.size()) - return false; - - for (int i = 0 ; i < nodePatterns.size() ; i++) { - var pattern = nodePatterns.get(i); - var node = nodes.get(i); - if (pattern.startsWith("$")) - continue; - if (!pattern.equals(node)) - return false; - } - - return true; - } - - /** - * Returns the path parameters found in the specified path using this pattern. - * The return value of this method is undefined, if the patter does not match. - * - * @param path the path - * @return the path parameters, if any, or an empty map - * @see #matches(String) - */ - public PathParameters obtainPathParameters(String path) { - var params = new PathParameters(); - - var nodes = parse(path); - - for (int i = 0 ; i < Math.min(nodes.size(), nodePatterns.size()) ; i++) { - var pattern = nodePatterns.get(i); - var node = nodes.get(i); - if (pattern.startsWith("$")) { - params.put(pattern.substring(1), node); - } - } - - return params; - } - - @Override - public int hashCode() { - var str = new StringBuilder(); - for (var node : nodePatterns) { - if (node.startsWith("$")) { - str.append("/$"); - } else { - str.append('/'); - str.append(node); - } - } - if (collection) - str.append('/'); - - return str.toString().hashCode(); - } - - @Override - public boolean equals(Object obj) { - if (!obj.getClass().equals(PathPattern.class)) - return false; - - var other = (PathPattern) obj; - if (collection ^ other.collection || nodePatterns.size() != other.nodePatterns.size()) - return false; - - for (int i = 0 ; i < nodePatterns.size() ; i++) { - var left = nodePatterns.get(i); - var right = other.nodePatterns.get(i); - if (left.startsWith("$") && right.startsWith("$")) - continue; - if (!left.equals(right)) - return false; - } - - return true; - } -}