001: /*
002: * SSIFsize.java
003: * $Header: /home/cvs/jakarta-tomcat-4.0/catalina/src/share/org/apache/catalina/ssi/SSIFsize.java,v 1.2 2002/06/05 19:09:17 dsandberg Exp $
004: * $Revision: 1.2 $
005: * $Date: 2002/06/05 19:09:17 $
006: *
007: * ====================================================================
008: *
009: * The Apache Software License, Version 1.1
010: *
011: * Copyright (c) 1999 The Apache Software Foundation. All rights
012: * reserved.
013: *
014: * Redistribution and use in source and binary forms, with or without
015: * modification, are permitted provided that the following conditions
016: * are met:
017: *
018: * 1. Redistributions of source code must retain the above copyright
019: * notice, this list of conditions and the following disclaimer.
020: *
021: * 2. Redistributions in binary form must reproduce the above copyright
022: * notice, this list of conditions and the following disclaimer in
023: * the documentation and/or other materials provided with the
024: * distribution.
025: *
026: * 3. The end-user documentation included with the redistribution, if
027: * any, must include the following acknowlegement:
028: * "This product includes software developed by the
029: * Apache Software Foundation (http://www.apache.org/)."
030: * Alternately, this acknowlegement may appear in the software itself,
031: * if and wherever such third-party acknowlegements normally appear.
032: *
033: * 4. The names "The Jakarta Project", "Tomcat", and "Apache Software
034: * Foundation" must not be used to endorse or promote products derived
035: * from this software without prior written permission. For written
036: * permission, please contact apache@apache.org.
037: *
038: * 5. Products derived from this software may not be called "Apache"
039: * nor may "Apache" appear in their names without prior written
040: * permission of the Apache Group.
041: *
042: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
043: * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
044: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
045: * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
046: * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
047: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
048: * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
049: * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
050: * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
051: * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
052: * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
053: * SUCH DAMAGE.
054: * ====================================================================
055: *
056: * This software consists of voluntary contributions made by many
057: * individuals on behalf of the Apache Software Foundation. For more
058: * information on the Apache Software Foundation, please see
059: * <http://www.apache.org/>.
060: *
061: * [Additional notices, if required by prior licensing conditions]
062: *
063: */
064:
065: package org.apache.catalina.ssi;
066:
067: import java.io.IOException;
068: import java.io.PrintWriter;
069: import java.text.DecimalFormat;
070:
071: /**
072: * Implements the Server-side #fsize command
073: *
074: * @author Bip Thelin
075: * @author Dan Sandberg
076: * @version $Revision: 1.2 $, $Date: 2002/06/05 19:09:17 $
077: */
078: public final class SSIFsize implements SSICommand {
079: protected final static int ONE_KILOBYTE = 1024;
080: protected final static int ONE_MEGABYTE = 1024 * 1024;
081:
082: /**
083: * @see SSICommand
084: */
085: public void process(SSIMediator ssiMediator, String[] paramNames,
086: String[] paramValues, PrintWriter writer) {
087:
088: String configErrMsg = ssiMediator.getConfigErrMsg();
089: for (int i = 0; i < paramNames.length; i++) {
090: String paramName = paramNames[i];
091: String paramValue = paramValues[i];
092:
093: try {
094: if (paramName.equalsIgnoreCase("file")
095: || paramName.equalsIgnoreCase("virtual")) {
096: boolean virtual = paramName
097: .equalsIgnoreCase("virtual");
098: long size = ssiMediator.getFileSize(paramValue,
099: virtual);
100: String configSizeFmt = ssiMediator
101: .getConfigSizeFmt();
102: writer.write(formatSize(size, configSizeFmt));
103: } else {
104: ssiMediator.log("#fsize--Invalid attribute: "
105: + paramName);
106: writer.write(configErrMsg);
107: }
108: } catch (IOException e) {
109: ssiMediator.log("#fsize--Couldn't get size for file: "
110: + paramValue, e);
111: writer.write(configErrMsg);
112: }
113: }
114: }
115:
116: public String repeat(char aChar, int numChars) {
117: if (numChars < 0) {
118: throw new IllegalArgumentException(
119: "Num chars can't be negative");
120: }
121: StringBuffer buf = new StringBuffer();
122: for (int i = 0; i < numChars; i++) {
123: buf.append(aChar);
124: }
125: return buf.toString();
126: }
127:
128: public String padLeft(String str, int maxChars) {
129: String result = str;
130: int charsToAdd = maxChars - str.length();
131: if (charsToAdd > 0) {
132: result = repeat(' ', charsToAdd) + str;
133: }
134: return result;
135: }
136:
137: //We try to mimick Apache here, as we do everywhere
138: //All the 'magic' numbers are from the util_script.c Apache source file.
139: protected String formatSize(long size, String format) {
140: String retString = "";
141:
142: if (format.equalsIgnoreCase("bytes")) {
143: DecimalFormat decimalFormat = new DecimalFormat("#,##0");
144: retString = decimalFormat.format(size);
145: } else {
146: if (size == 0) {
147: retString = "0k";
148: } else if (size < ONE_KILOBYTE) {
149: retString = "1k";
150: } else if (size < ONE_MEGABYTE) {
151: retString = Long.toString((size + 512) / ONE_KILOBYTE);
152: retString += "k";
153: } else if (size < 99 * ONE_MEGABYTE) {
154: DecimalFormat decimalFormat = new DecimalFormat("0.0M");
155: retString = decimalFormat.format(size
156: / (double) ONE_MEGABYTE);
157: } else {
158: retString = Long.toString((size + (529 * ONE_KILOBYTE))
159: / ONE_MEGABYTE);
160: retString += "M";
161: }
162: retString = padLeft(retString, 5);
163: }
164:
165: return retString;
166: }
167: }
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