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169 lines (145 loc) · 3.96 KB
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/* zipdiff is available under the terms of the
* Apache License, version 2.0
*
* Link: http://www.apache.org/licenses/
*/
package zipdiff.output;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.util.Iterator;
import java.util.Set;
import zipdiff.Differences;
/**
* Generates html output for a Differences instance
*
* @author Sean C. Sullivan
*/
public class HtmlBuilder extends AbstractBuilder {
/**
* builds the output
*
* @param out OutputStream to write to
* @param d differences
*/
@Override
public void build(OutputStream out, Differences d) {
PrintWriter pw = new PrintWriter(out);
pw.println("<html>");
pw.println("<META http-equiv=\"Content-Type\" content=\"text/html\">");
pw.println("<head>");
pw.println("<title>File differences</title>");
pw.println("</head>");
pw.println("<body text=\"#000000\" vlink=\"#000000\" alink=\"#000000\" link=\"#000000\">");
pw.println(getStyleTag());
pw.print("<p>First file: ");
String filename1 = d.getFilename1();
if (filename1 == null) {
filename1 = "filename1.zip";
}
pw.print(filename1);
pw.println("<br>");
pw.print("Second file: ");
String filename2 = d.getFilename2();
if (filename2 == null) {
filename2 = "filename2.zip";
}
pw.print(filename2);
pw.println("</p>");
writeAdded(pw, d.getAdded().keySet());
writeRemoved(pw, d.getRemoved().keySet());
writeChanged(pw, d.getChanged().keySet());
pw.println("<hr>");
pw.println("<p>");
pw.println("Generated at " + new java.util.Date());
pw.println("</p>");
pw.println("</body>");
pw.println("</html>");
pw.flush();
}
/**
* writes the list of added files
*
* @param pw write to write to
* @param added set of added files
*/
protected void writeAdded(PrintWriter pw, Set added) {
writeDiffSet(pw, "Added", added);
}
/**
* writes the list of removed files
*
* @param pw write to write to
* @param removed set of removed files
*/
protected void writeRemoved(PrintWriter pw, Set removed) {
writeDiffSet(pw, "Removed", removed);
}
/**
* writes the list of modified files
*
* @param pw write to write to
* @param changed set of modified files
*/
protected void writeChanged(PrintWriter pw, Set changed) {
writeDiffSet(pw, "Changed", changed);
}
/**
* writes a set of differences
*
* @param pw write to write to
* @param name heading
* @param s set
*/
protected void writeDiffSet(PrintWriter pw, String name, Set s) {
pw.println("<TABLE CELLSPACING=\"1\" CELLPADDING=\"3\" WIDTH=\"100%\" BORDER=\"0\">");
pw.println("<tr>");
pw.println("<td class=\"diffs\" colspan=\"2\">" + name + " (" + s.size() + " entries)</td>");
pw.println("</tr>");
pw.println("<tr>");
pw.println("<td width=\"20\">");
pw.println("</td>");
pw.println("<td>");
if (s.size() > 0) {
pw.println("<ul>");
Iterator iter = s.iterator();
while (iter.hasNext()) {
String key = (String) iter.next();
pw.print("<li>");
pw.print(key);
pw.println("</li>");
}
pw.println("</ul>");
}
pw.println("</td>");
pw.println("</tr>");
pw.println("</table>");
}
/**
* generates the style-html-tag.
*
* @return content of style-tag
*/
protected String getStyleTag() {
StringBuffer sb = new StringBuffer();
sb.append("<style type=\"text/css\">");
sb.append(" body, p { ");
sb.append(" font-family: verdana,arial,helvetica; ");
sb.append(" font-size: 80%; ");
sb.append(" color:#000000; ");
sb.append(" } \n");
sb.append(" .diffs { \n");
sb.append(" font-family: verdana,arial,helvetica; \n");
sb.append(" font-size: 80%; \n");
sb.append(" font-weight: bold; \n");
sb.append(" text-align:left; \n");
sb.append(" background:#a6caf0; \n");
sb.append(" } \n");
sb.append(" tr, td { \n");
sb.append(" font-family: verdana,arial,helvetica; \n");
sb.append(" font-size: 80%; \n");
sb.append(" background:#eeeee0; \n");
sb.append(" } \n");
sb.append(" </style>\n");
return sb.toString();
}
}