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/*
 * Copyright 2008 ZXing authors
 *
 * 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 com.google.zxing.client.result;

import com.google.zxing.Result;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.Map;

/**
 * 

Parses an "sms:" URI result, which specifies a number to SMS. * See RFC 5724 on this.

* *

This class supports "via" syntax for numbers, which is not part of the spec. * For example "+12125551212;via=+12124440101" may appear as a number. * It also supports a "subject" query parameter, which is not mentioned in the spec. * These are included since they were mentioned in earlier IETF drafts and might be * used.

* *

This actually also parses URIs starting with "mms:" and treats them all the same way, * and effectively converts them to an "sms:" URI for purposes of forwarding to the platform.

* * @author Sean Owen */ public final class SMSMMSResultParser extends ResultParser { @Override public SMSParsedResult parse(Result result) { String rawText = getMassagedText(result); if (!(rawText.startsWith("sms:") || rawText.startsWith("SMS:") || rawText.startsWith("mms:") || rawText.startsWith("MMS:"))) { return null; } // Check up front if this is a URI syntax string with query arguments Map nameValuePairs = parseNameValuePairs(rawText); String subject = null; String body = null; boolean querySyntax = false; if (nameValuePairs != null && !nameValuePairs.isEmpty()) { subject = nameValuePairs.get("subject"); body = nameValuePairs.get("body"); querySyntax = true; } // Drop sms, query portion int queryStart = rawText.indexOf('?', 4); String smsURIWithoutQuery; // If it's not query syntax, the question mark is part of the subject or message if (queryStart < 0 || !querySyntax) { smsURIWithoutQuery = rawText.substring(4); } else { smsURIWithoutQuery = rawText.substring(4, queryStart); } int lastComma = -1; int comma; List numbers = new ArrayList<>(1); List vias = new ArrayList<>(1); while ((comma = smsURIWithoutQuery.indexOf(',', lastComma + 1)) > lastComma) { String numberPart = smsURIWithoutQuery.substring(lastComma + 1, comma); addNumberVia(numbers, vias, numberPart); lastComma = comma; } addNumberVia(numbers, vias, smsURIWithoutQuery.substring(lastComma + 1)); return new SMSParsedResult(numbers.toArray(EMPTY_STR_ARRAY), vias.toArray(EMPTY_STR_ARRAY), subject, body); } private static void addNumberVia(Collection numbers, Collection vias, String numberPart) { int numberEnd = numberPart.indexOf(';'); if (numberEnd < 0) { numbers.add(numberPart); vias.add(null); } else { numbers.add(numberPart.substring(0, numberEnd)); String maybeVia = numberPart.substring(numberEnd + 1); String via; if (maybeVia.startsWith("via=")) { via = maybeVia.substring(4); } else { via = null; } vias.add(via); } } }




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