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https://github.com/zxing/zxing.git
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7854d30103
git-svn-id: https://zxing.googlecode.com/svn/trunk@817 59b500cc-1b3d-0410-9834-0bbf25fbcc57
108 lines
3.9 KiB
C#
Executable file
108 lines
3.9 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 com.google.zxing;
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using com.google.zxing.common;
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namespace com.google.zxing.qrcode.decoder
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{
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public sealed class Mode
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{
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// No, we can't use an enum here. J2ME doesn't support it.
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public static Mode TERMINATOR = new Mode(new int[]{0, 0, 0}, 0x00, "TERMINATOR"); // Not really a mode...
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public static Mode NUMERIC = new Mode(new int[]{10, 12, 14}, 0x01, "NUMERIC");
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public static Mode ALPHANUMERIC = new Mode(new int[]{9, 11, 13}, 0x02, "ALPHANUMERIC");
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public static Mode BYTE = new Mode(new int[]{8, 16, 16}, 0x04, "BYTE");
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public static Mode ECI = new Mode(null, 0x07, "ECI"); // character counts don't apply
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public static Mode KANJI = new Mode(new int[]{8, 10, 12}, 0x08, "KANJI");
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public static Mode FNC1_FIRST_POSITION = new Mode(null, 0x05, "FNC1_FIRST_POSITION");
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public static Mode FNC1_SECOND_POSITION = new Mode(null, 0x09, "FNC1_SECOND_POSITION");
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private int[] characterCountBitsForVersions;
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private int bits;
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private string name;
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private Mode(int[] characterCountBitsForVersions, int bits, string name) {
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this.characterCountBitsForVersions = characterCountBitsForVersions;
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this.bits = bits;
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this.name = name;
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}
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/**
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* @param bits four bits encoding a QR Code data mode
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* @return {@link Mode} encoded by these bits
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* @throws ArgumentException if bits do not correspond to a known mode
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*/
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public static Mode forBits(int bits) {
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switch (bits) {
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case 0x0:
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return TERMINATOR;
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case 0x1:
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return NUMERIC;
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case 0x2:
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return ALPHANUMERIC;
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case 0x4:
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return BYTE;
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case 0x5:
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return FNC1_FIRST_POSITION;
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case 0x7:
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return ECI;
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case 0x8:
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return KANJI;
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case 0x9:
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return FNC1_SECOND_POSITION;
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default:
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throw new ArgumentException();
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}
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}
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/**
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* @param version version in question
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* @return number of bits used, in this QR Code symbol {@link Version}, to encode the
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* count of characters that will follow encoded in this {@link Mode}
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*/
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public int getCharacterCountBits(Version version) {
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if (characterCountBitsForVersions == null) {
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throw new ArgumentException("Character count doesn't apply to this mode");
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}
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int number = version.getVersionNumber();
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int offset;
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if (number <= 9) {
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offset = 0;
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} else if (number <= 26) {
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offset = 1;
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} else {
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offset = 2;
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}
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return characterCountBitsForVersions[offset];
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}
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public int getBits() {
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return bits;
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}
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public string getName() {
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return name;
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}
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public string toString() {
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return name;
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}
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}
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} |