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/*
* Copyright (C) 2006 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package android.net;
import static android.util.Patterns.GOOD_IRI_CHAR;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* {@hide}
*
* Web Address Parser
*
* This is called WebAddress, rather than URL or URI, because it
* attempts to parse the stuff that a user will actually type into a
* browser address widget.
*
* Unlike java.net.uri, this parser will not choke on URIs missing
* schemes. It will only throw a ParseException if the input is
* really hosed.
*
* If given an https scheme but no port, fills in port
*
*/
public class WebAddress {
private final static String LOGTAG = "http";
public String mScheme;
public String mHost;
public int mPort;
public String mPath;
public String mAuthInfo;
static final int MATCH_GROUP_SCHEME = 1;
static final int MATCH_GROUP_AUTHORITY = 2;
static final int MATCH_GROUP_HOST = 3;
static final int MATCH_GROUP_PORT = 4;
static final int MATCH_GROUP_PATH = 5;
static Pattern sAddressPattern = Pattern.compile(
/* scheme */ "(?:(http|HTTP|https|HTTPS|file|FILE)\\:\\/\\/)?" +
/* authority */ "(?:([-A-Za-z0-9$_.+!*'(),;?&=]+(?:\\:[-A-Za-z0-9$_.+!*'(),;?&=]+)?)@)?" +
/* host */ "([-" + GOOD_IRI_CHAR + "%_]+(?:\\.[-" + GOOD_IRI_CHAR + "%_]+)*|\\[[0-9a-fA-F:\\.]+\\])?" +
/* port */ "(?:\\:([0-9]+))?" +
/* path */ "(\\/?[^#]*)?" +
/* anchor */ ".*");
/** parses given uriString. */
public WebAddress(String address) throws ParseException {
if (address == null) {
throw new NullPointerException();
}
// android.util.Log.d(LOGTAG, "WebAddress: " + address);
mScheme = "";
mHost = "";
mPort = -1;
mPath = "/";
mAuthInfo = "";
Matcher m = sAddressPattern.matcher(address);
String t;
if (m.matches()) {
t = m.group(MATCH_GROUP_SCHEME);
if (t != null) mScheme = t;
t = m.group(MATCH_GROUP_AUTHORITY);
if (t != null) mAuthInfo = t;
t = m.group(MATCH_GROUP_HOST);
if (t != null) mHost = t;
t = m.group(MATCH_GROUP_PORT);
if (t != null) {
try {
mPort = Integer.parseInt(t);
} catch (NumberFormatException ex) {
throw new ParseException("Bad port");
}
}
t = m.group(MATCH_GROUP_PATH);
if (t != null && t.length() > 0) {
/* handle busted myspace frontpage redirect with
missing initial "/" */
if (t.charAt(0) == '/') {
mPath = t;
} else {
mPath = "/" + t;
}
}
} else {
// nothing found... outa here
throw new ParseException("Bad address");
}
/* Get port from scheme or scheme from port, if necessary and
possible */
if (mPort == 443 && mScheme.equals("")) {
mScheme = "https";
} else if (mPort == -1) {
if (mScheme.equals("https"))
mPort = 443;
else
mPort = 80; // default
}
if (mScheme.equals("")) mScheme = "http";
}
public String toString() {
String port = "";
if ((mPort != 443 && mScheme.equals("https")) ||
(mPort != 80 && mScheme.equals("http"))) {
port = ":" + Integer.toString(mPort);
}
String authInfo = "";
if (mAuthInfo.length() > 0) {
authInfo = mAuthInfo + "@";
}
return mScheme + "://" + authInfo + mHost + port + mPath;
}
}
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