resources/advanced_font_properties
Create a list of all fonts contained in a PDF document and print advanced properties of the fonts.
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import java.util.regex.Matcher;
import java.util.regex.Pattern;
import com.pdflib.pCOS;
import com.pdflib.pCOSException;
import com.pdflib.cookbook.pcos.pcos_cookbook_example;
/**
* Create a list of all fonts contained in a PDF document and print advanced
* properties of the fonts.
* <p>
* Required software: pCOS interface 6 (pCOS 3.x, TET 4.x) <br>
* Required data: PDF document
*
* @version $Id: advanced_font_properties.java,v 1.2 2010/11/02 07:34:13 stm Exp $
*/
public class advanced_font_properties 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,
/* 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.pcos_get_string(doc, "filename"));
/* retrieve the number of fonts in the document */
int fontcount = (int) p.pcos_get_number(doc, "length:fonts");
System.out.println(fontcount + " fonts found in "
+ p.pcos_get_string(doc, "filename"));
for (int i = 0; i < fontcount; i++) {
print_font_info(p, doc, i);
}
p.close_document(doc);
}
/**
* Print advanced information about a single font.
*
* @param p
* pCOS object
* @param doc
* document handle
* @param f
* index of font in the global "fonts" array
*
* @throws pCOSException
*/
private void print_font_info(pCOS p, int doc, int f) throws pCOSException {
String prefix = " ";
System.out.println(p.pcos_get_string(doc, "fonts[" + f + "]/name"));
boolean embedded = p.pcos_get_number(doc, "fonts[" + f
+ "]/embedded") != 0;
System.out.println(prefix + "embedded: "+ (embedded ? "yes" : "no"));
if (embedded) {
/*
* Only for an embedded font is makes sense to determine whether
* the font is subsetted. This can be found out by looking at the
* fullname. If it starts with six uppercase letters and a '+'
* character, the font is a subset.
* The presence of the prefix is determined with a regular
* expression here: Exactly six uppercase letters A-Z, followed
* by a '+' character, followed by at least one additional
* character.
*/
String fullname = p.pcos_get_string(doc,
"fonts[" + f + "]/fullname");
Pattern subset_prefix = Pattern.compile("[A-Z]{6}\\+.+");
Matcher matcher = subset_prefix.matcher(fullname);
System.out.println(prefix + "subset: "
+ (matcher.matches() ? "yes" : "no"));
}
else {
System.out.println(prefix + "subset: n/a");
}
System.out.println(prefix + "writing mode: " +
(p.pcos_get_number(doc, "fonts[" + f + "]/vertical") != 0
? "vertical"
: "horizontal"));
String objtype = p.pcos_get_string(doc,
"type:fonts[" + f + "]/FontDescriptor/Ascent");
if (objtype.equals("number"))
{
int ascender = (int) p.pcos_get_number(doc,
"fonts[" + f + "]/FontDescriptor/Ascent");
System.out.println(prefix + "ascender: " + ascender);
}
else {
System.out.println(prefix + "ascender: n/a");
}
objtype = p.pcos_get_string(doc,
"type:fonts[" + f + "]/FontDescriptor/Descent");
/* check whether the entry actually exists */
if (objtype.equals("number"))
{
int descender = (int) p.pcos_get_number(doc,
"fonts[" + f + "]/FontDescriptor/Descent");
System.out.println(prefix + "descender: " + descender);
}
else {
System.out.println(prefix + "descender: n/a");
}
}
public advanced_font_properties(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[]) {
advanced_font_properties example = new advanced_font_properties(argv,
"Advanced Font Properties", SEARCH_PATH,
"$RCSfile: advanced_font_properties.java,v $", "$Revision: 1.2 $");
example.execute();
}
}