Android Open Source - final_app M E C A R D Contact Encoder

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The source code is released under:

CC0 1.0 Universal Statement of Purpose The laws of most jurisdictions throughout the world automatically confer exclusive Copyright and Related Rights (defined below) upon the creator and subsequent...

Java Source Code

/*
 * Copyright (C) 2011 ZXing authors//w  w w. j a  v  a 2s  .  c  o m
 *
 * 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.android.encode;

import java.util.regex.Pattern;

import android.telephony.PhoneNumberUtils;

/**
 * Encodes contact information according to the MECARD format.
 * 
 * @author Sean Owen
 */
final class MECARDContactEncoder extends ContactEncoder {

  private static final Pattern RESERVED_MECARD_CHARS = Pattern.compile("([\\\\:;])");
  private static final Pattern NEWLINE = Pattern.compile("\\n");
  private static final Pattern COMMA = Pattern.compile(",");
  private static final Formatter MECARD_FIELD_FORMATTER = new Formatter() {
    @Override
    public String format(String source) {
      return NEWLINE.matcher(RESERVED_MECARD_CHARS.matcher(source).replaceAll("\\\\$1")).replaceAll("");
    }
  };
  private static final char TERMINATOR = ';';
  private static final Pattern NOT_DIGITS = Pattern.compile("[^0-9]+");

  @Override
  public String[] encode(Iterable<String> names, String organization, Iterable<String> addresses, Iterable<String> phones, Iterable<String> emails,
      Iterable<String> urls, String note) {
    StringBuilder newContents = new StringBuilder(100);
    newContents.append("MECARD:");
    StringBuilder newDisplayContents = new StringBuilder(100);
    appendUpToUnique(newContents, newDisplayContents, "N", names, 1, new Formatter() {
      @Override
      public String format(String source) {
        return source == null ? null : COMMA.matcher(source).replaceAll("");
      }
    });
    append(newContents, newDisplayContents, "ORG", organization);
    appendUpToUnique(newContents, newDisplayContents, "ADR", addresses, 1, null);
    appendUpToUnique(newContents, newDisplayContents, "TEL", phones, Integer.MAX_VALUE, new Formatter() {
      @Override
      public String format(String source) {
        CharSequence s = PhoneNumberUtils.formatNumber(source);
        return s == null ? null : NOT_DIGITS.matcher(s).replaceAll("");
      }
    });
    appendUpToUnique(newContents, newDisplayContents, "EMAIL", emails, Integer.MAX_VALUE, null);
    appendUpToUnique(newContents, newDisplayContents, "URL", urls, Integer.MAX_VALUE, null);
    append(newContents, newDisplayContents, "NOTE", note);
    newContents.append(';');
    return new String[] { newContents.toString(), newDisplayContents.toString() };
  }

  private static void append(StringBuilder newContents, StringBuilder newDisplayContents, String prefix, String value) {
    doAppend(newContents, newDisplayContents, prefix, value, MECARD_FIELD_FORMATTER, TERMINATOR);
  }

  private static void appendUpToUnique(StringBuilder newContents, StringBuilder newDisplayContents, String prefix, Iterable<String> values,
      int max, Formatter formatter) {
    doAppendUpToUnique(newContents, newDisplayContents, prefix, values, max, formatter, MECARD_FIELD_FORMATTER, TERMINATOR);
  }

}

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