special/iccprofiles
Extract one or more ICC profiles from the document output intents.
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import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import com.pdflib.pCOS;
import com.pdflib.pCOSException;
import com.pdflib.cookbook.pcos.pcos_cookbook_example;
/**
* Extract one or more ICC profiles from the document output intents.
* <p>
* Required software: pCOS interface 3 (pCOS 2.x, PDFlib 7.x, TET 2.2,
* PLOP 3.x)<br>
* Required data: PDF document
*
* @version $Id: icc_profiles.java,v 1.1 2007/09/21 12:58:28 stm Exp $
*/
public class icc_profiles extends pcos_cookbook_example {
/* This is where the data files are. Adjust as necessary. */
private final static String SEARCH_PATH = "../input";
public void example_code(pCOS p, String filename)
throws pCOSException, Exception {
/* Open the PDF document */
int doc = p.open_document(filename, "");
if (doc == -1)
throw new Exception("Error: " + p.get_errmsg());
System.out.println("File name: " + p.get_string(doc, "filename"));
int output_intent_count = (int) p.get_number(doc, "length:/Root/OutputIntents");
for (int oi = 0; oi < output_intent_count; oi += 1) {
System.out.println("Output intent " + (oi + 1));
process_output_intent(p, doc, filename, oi);
}
p.close_document(doc);
}
/**
* Examines the output intent given by parameter oi, and writes out ICC
* profile if applicable.
*
* @param p
* pCOS object
* @param doc
* pCOS document handle
* @param filename
* name of the PDF input document
* @param oi
* index in "/Root/OutputIntents" array
*
* @throws pCOSException
*/
private void process_output_intent(pCOS p, int doc, String filename, int oi)
throws pCOSException, Exception {
/*
* The pCOS path to the given output intent
*/
final String oi_key = "/Root/OutputIntents[" + oi + "]";
print_info(p, doc, oi_key + "/S", "Subtype", "name", true);
print_info(p, doc, oi_key + "/OutputCondition", "Output Condition", "string", false);
print_info(p, doc, oi_key + "/OutputConditionIdentifier", "Identifier", "string", true);
print_info(p, doc, oi_key + "/RegistryName", "Registry", "string", false);
print_info(p, doc, oi_key + "/Info", "Info", "string", false);
String objtype = p.get_string(doc, "type:" + oi_key + "/DestOutputProfile");
if (objtype.equals("stream")) {
byte[] contents = p.get_stream(doc, "", oi_key + "/DestOutputProfile");
if (contents != null && contents.length > 0) {
String subtype = p.get_string(doc, oi_key + "/S");
write_profile(filename, subtype, contents);
}
else {
System.out.println(" No ICC profile found");
}
}
else {
System.out.println(" No ICC profile found");
}
}
/**
* Prints out one of the keys in the output intent dictionary.
*
* @param p
* pCOS object
* @param doc
* pCOS document handle
* @param key
* key of interest in the output intent dictionary
* @param label
* human-readable lable
* @param type
* expected type of the value in the dictionary
* @param required
* if true the absence of the key causes an exception
*
* @throws pCOSException
* a pCOS error occurred
* @throws Exception
* a required key was not found, the PDF document is damaged
*/
private void print_info(pCOS p, int doc, String key, String label, String type, boolean required)
throws pCOSException, Exception {
String objtype = p.get_string(doc, "type:" + key);
System.out.print(" " + label + ": ");
if (objtype.equals(type)) {
System.out.print("'" + p.get_string(doc, key) + "'");
}
else {
if (required) {
throw new Exception("Required key '" + key + "' is missing, cannot continue");
}
System.out.print("(not found)");
}
System.out.println();
}
/**
* Writes the ICC profile to a file with a unique name.
*
* @param filename
* name of PDF input document
* @param subtype
* output intent subtype from output intent dictionary
* @param contents
* the contents of the distiller profile
*
* @throws Exception
* unexpected suffix of input file name
*/
private void write_profile(String filename, String subtype,
byte[] contents) throws Exception {
File original_path = new File(filename);
String base_name = original_path.getName();
/*
* Strip off the ".pdf" part of the file name
*/
String suffix = "";
if (base_name.length() >= 4) {
suffix = base_name.substring(base_name.length() - 4);
}
if (suffix.compareToIgnoreCase(".pdf") != 0) {
throw new Exception("Input document has unexpected suffix \""
+ suffix + "\" (expected \".pdf\")");
}
base_name = base_name.substring(0, base_name.length() - 4);
try {
/*
* create a new unique file in the current directory and write the
* contents of the ICC profile to it
*/
File icc_profile_file = File.createTempFile(base_name + "_"
+ subtype + "_", ".icc", new File("."));
FileOutputStream icc_profile_stream = new FileOutputStream(
icc_profile_file);
icc_profile_stream.write(contents);
icc_profile_stream.close();
System.out.println(" ICC profile extracted to file \""
+ icc_profile_file.getName() + "\"");
}
catch (IOException e) {
System.err.println("IOException occured:");
e.printStackTrace();
}
}
public icc_profiles(String[] argv, String readable_name,
String search_path, String full_rcs_file_name, String revision) {
super(argv, readable_name, search_path, full_rcs_file_name, revision);
}
public static void main(String argv[]) {
icc_profiles example = new icc_profiles(argv, "Output intent ICC profiles",
SEARCH_PATH, "$RCSfile: icc_profiles.java,v $", "$Revision: 1.1 $");
example.execute();
}
}