zxing/csharp/client/result/EmailDoCoMoResultParser.cs
srowen d4efd44fb0 New C# port from Suraj Supekar
git-svn-id: https://zxing.googlecode.com/svn/trunk@1202 59b500cc-1b3d-0410-9834-0bbf25fbcc57
2010-02-05 19:52:53 +00:00

101 lines
3.1 KiB
C#
Executable file

/*
* Copyright 2007 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.
*/
using System;
using Result = com.google.zxing.Result;
namespace com.google.zxing.client.result
{
/// <summary> Implements the "MATMSG" email message entry format.
///
/// Supported keys: TO, SUB, BODY
///
/// </summary>
/// <author> Sean Owen
/// </author>
/// <author>www.Redivivus.in (suraj.supekar@redivivus.in) - Ported from ZXING Java Source
/// </author>
sealed class EmailDoCoMoResultParser:AbstractDoCoMoResultParser
{
//UPGRADE_NOTE: Final was removed from the declaration of 'ATEXT_SYMBOLS'. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1003'"
private static readonly char[] ATEXT_SYMBOLS = new char[]{'@', '.', '!', '#', '$', '%', '&', '\'', '*', '+', '-', '/', '=', '?', '^', '_', '`', '{', '|', '}', '~'};
public static EmailAddressParsedResult parse(Result result)
{
System.String rawText = result.Text;
if (rawText == null || !rawText.StartsWith("MATMSG:"))
{
return null;
}
System.String[] rawTo = matchDoCoMoPrefixedField("TO:", rawText, true);
if (rawTo == null)
{
return null;
}
System.String to = rawTo[0];
if (!isBasicallyValidEmailAddress(to))
{
return null;
}
System.String subject = matchSingleDoCoMoPrefixedField("SUB:", rawText, false);
System.String body = matchSingleDoCoMoPrefixedField("BODY:", rawText, false);
return new EmailAddressParsedResult(to, subject, body, "mailto:" + to);
}
/// <summary> This implements only the most basic checking for an email address's validity -- that it contains
/// an '@' contains no characters disallowed by RFC 2822. This is an overly lenient definition of
/// validity. We want to generally be lenient here since this class is only intended to encapsulate what's
/// in a barcode, not "judge" it.
/// </summary>
internal static bool isBasicallyValidEmailAddress(System.String email)
{
if (email == null)
{
return false;
}
bool atFound = false;
for (int i = 0; i < email.Length; i++)
{
char c = email[i];
if ((c < 'a' || c > 'z') && (c < 'A' || c > 'Z') && (c < '0' || c > '9') && !isAtextSymbol(c))
{
return false;
}
if (c == '@')
{
if (atFound)
{
return false;
}
atFound = true;
}
}
return atFound;
}
private static bool isAtextSymbol(char c)
{
for (int i = 0; i < ATEXT_SYMBOLS.Length; i++)
{
if (c == ATEXT_SYMBOLS[i])
{
return true;
}
}
return false;
}
}
}