| /* |
| * Copyright 1999,2004 The Apache Software Foundation. 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 org.apache.catalina.ssi; |
| |
| |
| import java.io.IOException; |
| import java.io.PrintWriter; |
| import java.text.DecimalFormat; |
| /** |
| * Implements the Server-side #fsize command |
| * |
| * @author Bip Thelin |
| * @author Paul Speed |
| * @author Dan Sandberg |
| * @author David Becker |
| * @version $Revision$, $Date$ |
| */ |
| public final class SSIFsize implements SSICommand { |
| protected final static int ONE_KILOBYTE = 1024; |
| protected final static int ONE_MEGABYTE = 1024 * 1024; |
| |
| |
| /** |
| * @see SSICommand |
| */ |
| public long process(SSIMediator ssiMediator, String commandName, |
| String[] paramNames, String[] paramValues, PrintWriter writer) { |
| long lastModified = 0; |
| String configErrMsg = ssiMediator.getConfigErrMsg(); |
| for (int i = 0; i < paramNames.length; i++) { |
| String paramName = paramNames[i]; |
| String paramValue = paramValues[i]; |
| String substitutedValue = ssiMediator |
| .substituteVariables(paramValue); |
| try { |
| if (paramName.equalsIgnoreCase("file") |
| || paramName.equalsIgnoreCase("virtual")) { |
| boolean virtual = paramName.equalsIgnoreCase("virtual"); |
| lastModified = ssiMediator.getFileLastModified( |
| substitutedValue, virtual); |
| long size = ssiMediator.getFileSize(substitutedValue, |
| virtual); |
| String configSizeFmt = ssiMediator.getConfigSizeFmt(); |
| writer.write(formatSize(size, configSizeFmt)); |
| } else { |
| ssiMediator.log("#fsize--Invalid attribute: " + paramName); |
| writer.write(configErrMsg); |
| } |
| } catch (IOException e) { |
| ssiMediator.log("#fsize--Couldn't get size for file: " |
| + substitutedValue, e); |
| writer.write(configErrMsg); |
| } |
| } |
| return lastModified; |
| } |
| |
| |
| public String repeat(char aChar, int numChars) { |
| if (numChars < 0) { |
| throw new IllegalArgumentException("Num chars can't be negative"); |
| } |
| StringBuffer buf = new StringBuffer(); |
| for (int i = 0; i < numChars; i++) { |
| buf.append(aChar); |
| } |
| return buf.toString(); |
| } |
| |
| |
| public String padLeft(String str, int maxChars) { |
| String result = str; |
| int charsToAdd = maxChars - str.length(); |
| if (charsToAdd > 0) { |
| result = repeat(' ', charsToAdd) + str; |
| } |
| return result; |
| } |
| |
| |
| //We try to mimick Apache here, as we do everywhere |
| //All the 'magic' numbers are from the util_script.c Apache source file. |
| protected String formatSize(long size, String format) { |
| String retString = ""; |
| if (format.equalsIgnoreCase("bytes")) { |
| DecimalFormat decimalFormat = new DecimalFormat("#,##0"); |
| retString = decimalFormat.format(size); |
| } else { |
| if (size == 0) { |
| retString = "0k"; |
| } else if (size < ONE_KILOBYTE) { |
| retString = "1k"; |
| } else if (size < ONE_MEGABYTE) { |
| retString = Long.toString((size + 512) / ONE_KILOBYTE); |
| retString += "k"; |
| } else if (size < 99 * ONE_MEGABYTE) { |
| DecimalFormat decimalFormat = new DecimalFormat("0.0M"); |
| retString = decimalFormat.format(size / (double)ONE_MEGABYTE); |
| } else { |
| retString = Long.toString((size + (529 * ONE_KILOBYTE)) |
| / ONE_MEGABYTE); |
| retString += "M"; |
| } |
| retString = padLeft(retString, 5); |
| } |
| return retString; |
| } |
| } |