+++ /dev/null
-package org.ibex.xt.shell;
-
-import java.io.*;
-import java.util.*;
-import java.util.regex.*;
-
-import org.ibex.js.*;
-
-public abstract class Request implements Serializable {
-
- public abstract Response process(JSScope root) throws JSExn;
-
- public static class Response implements Serializable {
- protected Exception ex;
- public Response() { ex = null; }
- public Response(Exception e) { ex = e; }
- public Exception error() { return ex; }
- }
-
- public static class Key extends Request {
- protected String path, matcher;
- public Key() {}
-
- /** Expects a shell-path that uses '.' as a seperator and * for wildcard. */
- public Key(String c) {
- int pos = c.lastIndexOf('.');
- path = c.substring(0, pos);
- matcher = c.substring(pos + 1).replaceAll("\\*+", ".*");
- }
-
- public Key(String path, String matcher) {
- this.path = path; this.matcher = matcher;
- }
-
- /** Returns the object referenced by path. */
- protected Object path(JSScope root) throws JSExn {
- String p = path == null ? "" : path.replaceAll("\\.+", "\\.");
- if (p.length() > 0 && p.charAt(0) == '.')
- p = p.substring(1);
- if (p.length() > 0 && p.charAt(p.length() - 1) == '.')
- p = p.substring(0, p.length() - 1);
-
- return p.equals("") ? root : root.get(p);
- }
-
- /** Returns the keys in <tt>js</tt> that match <tt>matcher</tt>. */
- protected List matches(JS js) throws JSExn {
- String m = matcher;
-
- Pattern pat = Pattern.compile(m);
- List keys = new ArrayList();
-
- Iterator i = js.keys().iterator(); while(i.hasNext()) {
- String k = i.next().toString();
- if (pat.matcher(k).matches()) keys.add(k);
- }
-
- return keys;
- }
-
- /** Returns <tt>o</tt> cast as a JS if it is such and has keys,
- * otherwise returns null. */
- protected JS keyed(Object o) {
- // FIXME: replace this with a canHaveKeys() function in org.ibex.js.JS
- return o == null || !(o instanceof JS) ||
- o instanceof JSDate || o instanceof Directory ||
- o instanceof Grammar || o instanceof JSMath ||
- o instanceof JSReflection || o instanceof JSRegexp ?
- null : (JS)o;
- }
-
- public Response process(JSScope root) throws JSExn {
- JS js = keyed(path(root));
-
- // if matcher is exact and a keyed object, return its keys
- JS o = keyed(js.get(matcher));
- if (o != null) { js = o; matcher = ".*"; }
-
- return js == null ? new Res() : new Res(matches(js));
- }
-
- public static class Res extends Response {
- private List keys;
- public Res() { keys = null; }
- public Res(List l) { keys = l; }
- public List keys() { return keys; }
- public boolean isPath() { return keys != null; }
- }
- }
-
- public static class IsKey extends Key {
- public IsKey() {}
- public IsKey(String c) { super(c); }
- public Response process(JSScope root) throws JSExn {
- JS js = keyed(path(root));
- return js == null ? new Res(false) : new Res(js.get(matcher) != null);
- }
-
- public static class Res extends Response {
- private boolean exists;
- public Res() {}
- public Res(boolean e) { exists = e; }
- public boolean exists() { return exists; }
- }
- }
-
- public static class RemoveKey extends Key {
- public RemoveKey(String c) { super(c); }
- public RemoveKey(String p, String m) { super(p, m); }
- public Response process(JSScope root) throws JSExn {
- JS js = keyed(path(root));
- if (js == null) throw new JSExn("no such path");
- boolean rm = js.containsKey(matcher);
- if (rm) js.remove(matcher);
- return new Res(rm);
- }
-
- public static class Res extends Response {
- private boolean removed;
- public Res() { }
- public Res(boolean rm) { removed = rm; }
- public boolean removed() { return removed; }
- }
- }
-
- public static class SetKey extends Key {
- protected JS value;
- public SetKey() {}
- public SetKey(String p, String m, JS val) { super(p, m); this.value = val; }
-
- public Response process(JSScope root) throws JSExn {
- JS js = keyed(path(root));
- if (js == null) throw new JSExn("no such path");
-
- js.put(matcher, JS.eval(JS.cloneWithNewParentScope(
- value, new JSResolve(root, js))));
- return new Res(); // TODO: return put() value when it has one
- }
-
- public class Res extends Response {
- }
-
- public class JSResolve extends JSScope {
- private JS path;
- public JSResolve(JSScope parent, JS path) { super(parent); this.path = path; }
- public Object get(Object key) throws JSExn {
- if (key != null && key instanceof String) {
- String k = (String)key;
- if (k.startsWith(".")) k = k.substring(1);
- else return path.get(k);
- }
- return super.get(key);
- }
- public void put(Object key, Object val) throws JSExn {
- if (key != null && key instanceof String) {
- String k = (String)key;
- if (k.startsWith(".")) k = k.substring(1);
- else { path.put(key, val); return; }
- }
- super.put(key, val);
- }
- }
- }
-
- /** Runs a series of requests. */
- public static class Composite extends Request {
- private boolean breakOnError = false;
- private Request[] requests;
- public Composite() {}
- public Composite(Request[] r, boolean breakOnError) {
- requests = r;
- this.breakOnError = breakOnError;
- }
- public Composite(List r, boolean breakOnError) {
- Request[] req = new Request[r.size()];
- r.toArray(req);
- requests = req;
- this.breakOnError = breakOnError;
- }
-
- public Response process(JSScope root) {
- Response[] res = new Response[requests.length];
-
- for (int i=0; i < requests.length; i++) {
- try { res[i] = requests[i].process(root); }
- catch (JSExn e) {
- res[i] = new Response(e);
-
- if (breakOnError) {
- Response[] newres = new Response[i + 1];
- System.arraycopy(res, 0, newres, 0, newres.length);
- res = newres;
- break;
- }
- }
- }
-
- return new Res(res);
- }
-
- public static class Res extends Response {
- private Response[] responses;
- public Res() {}
- public Res(Response[] r) { responses = r; }
- public Response get(int i) { return responses[i]; }
- public int size() { return responses.length; }
- public Response[] responses() { return responses; }
- }
- }
-}
projects / org.ibex.xt-crawshaw.git / blobdiff