mirror of
https://github.com/zxing/zxing.git
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b0ba223c90
git-svn-id: https://zxing.googlecode.com/svn/trunk@2293 59b500cc-1b3d-0410-9834-0bbf25fbcc57
371 lines
11 KiB
C#
Executable file
371 lines
11 KiB
C#
Executable file
/*
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* Copyright 2007 ZXing authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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using System;
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using Result = com.google.zxing.Result;
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namespace com.google.zxing.client.result
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{
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/// <summary> <p>Abstract class representing the result of decoding a barcode, as more than
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/// a String -- as some type of structured data. This might be a subclass which represents
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/// a URL, or an e-mail address. {@link #parseResult(com.google.zxing.Result)} will turn a raw
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/// decoded string into the most appropriate type of structured representation.</p>
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///
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/// <p>Thanks to Jeff Griffin for proposing rewrite of these classes that relies less
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/// on exception-based mechanisms during parsing.</p>
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///
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/// </summary>
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/// <author> Sean Owen
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/// </author>
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/// <author>www.Redivivus.in (suraj.supekar@redivivus.in) - Ported from ZXING Java Source
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/// </author>
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public abstract class ResultParser
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{
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public static ParsedResult parseResult(Result theResult)
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{
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// Simplification of original if - if else logic using Null Coalescing operator ??
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//
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// ?? Simply checks from left to right for a non null object
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// when an object evaluates to null the next object after the ?? is evaluated
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// This continues until a non null value is found or the last object is evaluated
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return
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BookmarkDoCoMoResultParser.parse(theResult) as ParsedResult ??
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AddressBookDoCoMoResultParser.parse(theResult) as ParsedResult ??
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EmailDoCoMoResultParser.parse(theResult) as ParsedResult ??
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AddressBookAUResultParser.parse(theResult) as ParsedResult ??
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VCardResultParser.parse(theResult) as ParsedResult ??
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BizcardResultParser.parse(theResult) as ParsedResult ??
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VEventResultParser.parse(theResult) as ParsedResult ??
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EmailAddressResultParser.parse(theResult) as ParsedResult ??
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TelResultParser.parse(theResult) as ParsedResult ??
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SMSMMSResultParser.parse(theResult) as ParsedResult ??
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GeoResultParser.parse(theResult) as ParsedResult ??
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URLTOResultParser.parse(theResult) as ParsedResult ??
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URIResultParser.parse(theResult) as ParsedResult ??
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ISBNResultParser.parse(theResult) as ParsedResult ??
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ProductResultParser.parse(theResult) as ParsedResult ??
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new TextParsedResult(theResult.Text, null) as ParsedResult;
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}
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protected internal static void maybeAppend(System.String value_Renamed, System.Text.StringBuilder result)
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{
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if (value_Renamed != null)
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{
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result.Append('\n');
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result.Append(value_Renamed);
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}
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}
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protected internal static void maybeAppend(System.String[] value_Renamed, System.Text.StringBuilder result)
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{
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if (value_Renamed != null)
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{
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for (int i = 0; i < value_Renamed.Length; i++)
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{
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result.Append('\n');
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result.Append(value_Renamed[i]);
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}
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}
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}
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protected internal static System.String[] maybeWrap(System.String value_Renamed)
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{
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return value_Renamed == null?null:new System.String[]{value_Renamed};
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}
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protected internal static System.String unescapeBackslash(System.String escaped)
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{
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if (escaped != null)
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{
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int backslash = escaped.IndexOf('\\');
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if (backslash >= 0)
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{
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int max = escaped.Length;
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System.Text.StringBuilder unescaped = new System.Text.StringBuilder(max - 1);
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unescaped.Append(escaped.ToCharArray(), 0, backslash);
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bool nextIsEscaped = false;
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for (int i = backslash; i < max; i++)
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{
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char c = escaped[i];
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if (nextIsEscaped || c != '\\')
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{
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unescaped.Append(c);
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nextIsEscaped = false;
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}
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else
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{
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nextIsEscaped = true;
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}
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}
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return unescaped.ToString();
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}
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}
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return escaped;
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}
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private static System.String urlDecode(System.String escaped)
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{
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// No we can't use java.net.URLDecoder here. JavaME doesn't have it.
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if (escaped == null)
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{
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return null;
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}
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char[] escapedArray = escaped.ToCharArray();
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int first = findFirstEscape(escapedArray);
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if (first < 0)
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{
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return escaped;
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}
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int max = escapedArray.Length;
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// final length is at most 2 less than original due to at least 1 unescaping
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System.Text.StringBuilder unescaped = new System.Text.StringBuilder(max - 2);
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// Can append everything up to first escape character
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unescaped.Append(escapedArray, 0, first);
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for (int i = first; i < max; i++)
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{
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char c = escapedArray[i];
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if (c == '+')
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{
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// + is translated directly into a space
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unescaped.Append(' ');
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}
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else if (c == '%')
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{
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// Are there even two more chars? if not we will just copy the escaped sequence and be done
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if (i >= max - 2)
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{
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unescaped.Append('%'); // append that % and move on
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}
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else
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{
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int firstDigitValue = parseHexDigit(escapedArray[++i]);
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int secondDigitValue = parseHexDigit(escapedArray[++i]);
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if (firstDigitValue < 0 || secondDigitValue < 0)
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{
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// bad digit, just move on
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unescaped.Append('%');
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unescaped.Append(escapedArray[i - 1]);
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unescaped.Append(escapedArray[i]);
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}
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unescaped.Append((char) ((firstDigitValue << 4) + secondDigitValue));
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}
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}
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else
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{
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unescaped.Append(c);
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}
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}
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return unescaped.ToString();
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}
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private static int findFirstEscape(char[] escapedArray)
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{
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int max = escapedArray.Length;
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for (int i = 0; i < max; i++)
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{
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char c = escapedArray[i];
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if (c == '+' || c == '%')
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{
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return i;
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}
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}
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return - 1;
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}
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private static int parseHexDigit(char c)
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{
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if (c >= 'a')
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{
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if (c <= 'f')
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{
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return 10 + (c - 'a');
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}
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}
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else if (c >= 'A')
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{
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if (c <= 'F')
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{
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return 10 + (c - 'A');
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}
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}
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else if (c >= '0')
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{
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if (c <= '9')
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{
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return c - '0';
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}
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}
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return - 1;
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}
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protected internal static bool isStringOfDigits(System.String value_Renamed, int length)
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{
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if (value_Renamed == null)
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{
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return false;
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}
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int stringLength = value_Renamed.Length;
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if (length != stringLength)
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{
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return false;
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}
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for (int i = 0; i < length; i++)
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{
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char c = value_Renamed[i];
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if (c < '0' || c > '9')
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{
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return false;
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}
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}
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return true;
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}
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protected internal static bool isSubstringOfDigits(System.String value_Renamed, int offset, int length)
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{
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if (value_Renamed == null)
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{
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return false;
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}
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int stringLength = value_Renamed.Length;
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int max = offset + length;
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if (stringLength < max)
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{
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return false;
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}
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for (int i = offset; i < max; i++)
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{
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char c = value_Renamed[i];
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if (c < '0' || c > '9')
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{
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return false;
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}
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}
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return true;
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}
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internal static System.Collections.Hashtable parseNameValuePairs(System.String uri)
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{
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int paramStart = uri.IndexOf('?');
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if (paramStart < 0)
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{
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return null;
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}
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System.Collections.Hashtable result = System.Collections.Hashtable.Synchronized(new System.Collections.Hashtable(3));
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paramStart++;
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int paramEnd;
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//UPGRADE_WARNING: Method 'java.lang.String.indexOf' was converted to 'System.String.IndexOf' which may throw an exception. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1101'"
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while ((paramEnd = uri.IndexOf('&', paramStart)) >= 0)
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{
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appendKeyValue(uri, paramStart, paramEnd, result);
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paramStart = paramEnd + 1;
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}
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appendKeyValue(uri, paramStart, uri.Length, result);
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return result;
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}
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private static void appendKeyValue(System.String uri, int paramStart, int paramEnd, System.Collections.Hashtable result)
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{
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//UPGRADE_WARNING: Method 'java.lang.String.indexOf' was converted to 'System.String.IndexOf' which may throw an exception. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1101'"
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int separator = uri.IndexOf('=', paramStart);
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if (separator >= 0)
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{
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// key = value
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System.String key = uri.Substring(paramStart, (separator) - (paramStart));
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System.String value_Renamed = uri.Substring(separator + 1, (paramEnd) - (separator + 1));
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value_Renamed = urlDecode(value_Renamed);
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result[key] = value_Renamed;
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}
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// Can't put key, null into a hashtable
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}
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internal static System.String[] matchPrefixedField(System.String prefix, System.String rawText, char endChar, bool trim)
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{
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System.Collections.ArrayList matches = null;
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int i = 0;
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int max = rawText.Length;
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while (i < max)
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{
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//UPGRADE_WARNING: Method 'java.lang.String.indexOf' was converted to 'System.String.IndexOf' which may throw an exception. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1101'"
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i = rawText.IndexOf(prefix, i);
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if (i < 0)
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{
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break;
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}
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i += prefix.Length; // Skip past this prefix we found to start
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int start = i; // Found the start of a match here
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bool done = false;
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while (!done)
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{
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//UPGRADE_WARNING: Method 'java.lang.String.indexOf' was converted to 'System.String.IndexOf' which may throw an exception. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1101'"
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i = rawText.IndexOf((System.Char) endChar, i);
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if (i < 0)
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{
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// No terminating end character? uh, done. Set i such that loop terminates and break
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i = rawText.Length;
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done = true;
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}
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else if (rawText[i - 1] == '\\')
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{
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// semicolon was escaped so continue
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i++;
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}
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else
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{
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// found a match
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if (matches == null)
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{
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matches = System.Collections.ArrayList.Synchronized(new System.Collections.ArrayList(3)); // lazy init
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}
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System.String element = unescapeBackslash(rawText.Substring(start, (i) - (start)));
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if (trim)
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{
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element = element.Trim();
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}
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matches.Add(element);
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i++;
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done = true;
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}
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}
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}
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if (matches == null || (matches.Count == 0))
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{
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return null;
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}
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return toStringArray(matches);
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}
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internal static System.String matchSinglePrefixedField(System.String prefix, System.String rawText, char endChar, bool trim)
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{
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System.String[] matches = matchPrefixedField(prefix, rawText, endChar, trim);
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return matches == null?null:matches[0];
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}
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internal static System.String[] toStringArray(System.Collections.ArrayList strings)
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{
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int size = strings.Count;
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System.String[] result = new System.String[size];
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for (int j = 0; j < size; j++)
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{
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result[j] = ((System.String) strings[j]);
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}
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return result;
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}
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}
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} |