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/**************************************************************************
/* This class implements an image-information object.
/*
/* Copyright (c) 2009 by Bernhard Bablok (mail@bablokb.de)
/*
/* This program is free software; you can redistribute it and/or modify
/* it under the terms of the GNU Library General Public License as published
/* by the Free Software Foundation; either version 2 of the License or
/* (at your option) any later version.
/*
/* This program is distributed in the hope that it will be useful, but
/* WITHOUT ANY WARRANTY; without even the implied warranty of
/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
/* GNU Library General Public License for more details.
/*
/* You should have received a copy of the GNU Library General Public License
/* along with this program; see the file COPYING.LIB. If not, write to
/* the Free Software Foundation Inc., 59 Temple Place - Suite 330,
/* Boston, MA 02111-1307 USA
/**************************************************************************/
package org.im4java.core;
import java.util.*;
import java.io.*;
import org.im4java.process.ArrayListOutputConsumer;
/**
This class implements an image-information object.
<p>The class just calls "identify -verbose" and parses the output.</p>
@version $Revision: 1.6 $
@author $Author: bablokb, Bruno Mascret (warnings) $
*/
public class Info {
//////////////////////////////////////////////////////////////////////////////
/**
Internal hashtable with image-attributes.
*/
private Hashtable<String,String> iAttributes = new Hashtable<String,String>();
//////////////////////////////////////////////////////////////////////////////
/**
Current value of indentation level
*/
private int iOldIndent=0;
//////////////////////////////////////////////////////////////////////////////
/**
Current value of attribute-prefix
*/
private String iPrefix="";
//////////////////////////////////////////////////////////////////////////////
/**
Constructor.
*/
public Info(String pFilename) throws InfoException {
IMOperation op = new IMOperation();
op.verbose();
op.addImage(pFilename);
try {
IdentifyCmd identify = new IdentifyCmd();
ArrayListOutputConsumer output = new ArrayListOutputConsumer();
identify.setOutputConsumer(output);
identify.run(op);
ArrayList<String> cmdOutput = output.getOutput();
for (String line:cmdOutput) {
parseLine(line);
}
} catch (Exception ex) {
throw new InfoException(ex);
}
}
//////////////////////////////////////////////////////////////////////////////
/**
Parse line of identify-output
*/
private void parseLine(String pLine) {
// structure:
// indent attribute: value
int indent = pLine.indexOf(pLine.trim())/2;
String[] parts = pLine.trim().split(": ",2);
// check indentation level and remove prefix if necessary
if (indent < iOldIndent) {
// remove tokens from iPrefix
int colonIndex=iPrefix.length()-1;
for (int i=0;i<iOldIndent-indent;++i) {
colonIndex = iPrefix.lastIndexOf(':',colonIndex-1);
}
if (colonIndex == -1) {
iPrefix="";
} else {
iPrefix=iPrefix.substring(0,colonIndex+1);
}
}
iOldIndent = indent;
// add a new attribute or increase prefix
if (parts.length == 1) {
// no value => add attribute to attribute-prefix
iPrefix=iPrefix+parts[0];
} else {
// value => add (key,value) to attributes
iAttributes.put(iPrefix+parts[0],parts[1]);
}
}
//////////////////////////////////////////////////////////////////////////////
/**
Return the given property.
*/
public String getProperty(String pPropertyName) {
return iAttributes.get(pPropertyName);
}
//////////////////////////////////////////////////////////////////////////////
/**
Return an enumeration of all properties.
*/
public Enumeration<String> getPropertyNames() {
return iAttributes.keys();
}
}
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