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Fix incorrect byte display in some cases, refactor and simplify and even speed up output a little

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git-svn-id: https://zxing.googlecode.com/svn/trunk@2648 59b500cc-1b3d-0410-9834-0bbf25fbcc57
This commit is contained in:
srowen@gmail.com 2013-04-10 21:57:30 +00:00
parent 58bfbcd212
commit c835ed3be6
2 changed files with 77 additions and 31 deletions
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66
zxingorg/src/com/google/zxing/web/OutputUtils.java Normal file
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@ -0,0 +1,66 @@
/*
* Copyright 2013 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.web;
import java.util.regex.Pattern;
/**
* Utility functions for {@code decoderesult.jspx}.
*
* @author Sean Owen
*/
public final class OutputUtils {
private static final int BYTES_PER_LINE = 16;
private static final int HALF_BYTES_PER_LINE = BYTES_PER_LINE / 2;
private static final Pattern NEWLINE = Pattern.compile("\r?\n");
private OutputUtils() {
}
public static String arrayToString(byte[] bytes) {
StringBuilder result = new StringBuilder(bytes.length * 4);
int i = 0;
while (i < bytes.length) {
int value = bytes[i] & 0xFF;
result.append(hexChar(value / 16));
result.append(hexChar(value % 16));
i++;
if (i % BYTES_PER_LINE == 0) {
result.append('\n');
} else if (i % HALF_BYTES_PER_LINE == 0) {
result.append(" ");
} else {
result.append(' ');
}
}
return result.toString();
}
public static char hexChar(int value) {
if (value < 0 || value > 15) {
throw new IllegalArgumentException();
}
return (char) (value < 10 ? ('0' + value) : ('a' + (value - 10)));
}
public static String escapeNewlineAsBR(CharSequence in) {
return NEWLINE.matcher(in).replaceAll("&lt;br/&gt;");
}
}

42
zxingorg/web/w/decoderesult.jspx
View file

@ -20,36 +20,18 @@
com.google.zxing.Result,
com.google.zxing.client.result.ResultParser,
com.google.zxing.client.result.ParsedResult,
com.google.zxing.web.OutputUtils,
org.apache.commons.lang3.StringEscapeUtils"/>
<jsp:declaration>
private static String arrayToString(byte[] bytes) {
int length = bytes.length;
StringBuilder result = new StringBuilder(length &lt;&lt; 2);
int i = 0;
while (i &lt; length) {
int max = Math.min(i + 8, length);
for (int j = i; j &lt; max; j++) {
int value = bytes[j] &amp; 0xFF;
result.append(Integer.toHexString(value / 16));
result.append(Integer.toHexString(value % 16));
result.append(' ');
}
result.append('\n');
i += 8;
}
for (int j = i - 8; j &lt; length; j++) {
result.append(Integer.toHexString(bytes[j] &amp; 0xFF));
result.append(' ');
}
return result.toString();
}
</jsp:declaration>
<jsp:directive.page contentType="text/html" session="false"/>
<jsp:scriptlet>response.setHeader("Cache-Control", "no-cache");</jsp:scriptlet>
<jsp:scriptlet>
response.setHeader("Cache-Control", "no-cache");
response.setHeader("X-Robots-Tag", "none");
</jsp:scriptlet>
<jsp:text><![CDATA[<!DOCTYPE html>]]></jsp:text>
<html>
<head>
<meta charset="UTF-8"/>
<meta name="robots" content="none"/>
<title>Decode Succeeded</title>
<link rel="stylesheet" href="style.css" type="text/css"/>
<style type="text/css">
@ -67,8 +49,7 @@
if (text == null) {
text = "(Not applicable)";
} else {
text = StringEscapeUtils.escapeXml(text);
text = text.replaceAll("\r?\n", "&lt;br/&gt;");
text = OutputUtils.escapeNewlineAsBR(StringEscapeUtils.escapeXml(text));
}
byte[] rawBytes = result.getRawBytes();
@ -76,25 +57,24 @@
if (rawBytes == null) {
rawBytesString = "(Not applicable)";
} else {
rawBytesString = arrayToString(rawBytes);
rawBytesString = OutputUtils.arrayToString(rawBytes);
}
String displayResult = parsedResult.getDisplayResult();
if (displayResult == null) {
displayResult = "(Not applicable)";
} else {
displayResult = StringEscapeUtils.escapeXml(displayResult);
displayResult = displayResult.replaceAll("\r?\n", "&lt;br/&gt;");
displayResult = OutputUtils.escapeNewlineAsBR(StringEscapeUtils.escapeXml(displayResult));
}
</jsp:scriptlet>
<table>
<table style="width:100%">
<tr>
<td>Raw text</td>
<td><jsp:expression>text</jsp:expression></td>
</tr>
<tr>
<td>Raw bytes</td>
<td><jsp:expression>rawBytesString</jsp:expression></td>
<td><pre style="margin:0"><jsp:expression>rawBytesString</jsp:expression></pre></td>
</tr>
<tr>
<td>Barcode format</td>