/**
*
* @author James Gosling
*/
import java.io.*;
import java.util.*;
import java.util.ArrayList;
import java.util.regex.*;
public class BibReorder {
String[] parts;
DocumentFragment[] documentBody, bibliography;
static Pattern bibRefPattern = Pattern.compile("\\[([0-9]+)\\]");
public static void main(String[] args) {
try {
BibReorder doc = new BibReorder();
boolean byFirstOccurrance = false;
boolean processed = false;
for(String s:args)
if("-f".equals(s)) byFirstOccurrance = true;
else {
processed = true;
doc.load(new FileInputStream(s));
doc.reorder(byFirstOccurrance);
doc.dumpDocument();
}
if(!processed) {
doc.load(BibReorder.class.getResource("sample. Data").openStream());
doc.reorder(byFirstOccurrance);
doc.dumpDocument();
}
} catch (IOException ex) {
System.err.println("Error reading file: "+ex);
}
}
void load(InputStream in) throws IOException {
Reader inc = new BufferedReader(new InputStreamReader(new BufferedInputStream(in)));
StringBuilder sb = new StringBuilder();
int c;
while((c=inc.read())>=0) sb.append((char)c);
parts = sb.toString().split("@footnote:");
if(parts.length!=2) throw new IOException("Must have exactly 2 parts");
documentBody = parseDocumentPart(parts[0]);
bibliography = parseDocumentPart(parts[1]);
in.close();
}
void reorder(boolean byFirstOccurrance) {
int slot = 0;
if(byFirstOccurrance) {
for(DocumentFragment p:documentBody)
if(p.tag!=null && p.tag.sequenceNumber==0) p.tag.sequenceNumber = ++slot;
Arrays.sort(bibliography, new Comparator<DocumentFragment>(){
public int compare(DocumentFragment o1, DocumentFragment o2) {
return (o1.tag==null ? 0 : o1.tag.sequenceNumber)-(o2.tag==null ? 0 : o2.tag.sequenceNumber);
}
});
} else
for(DocumentFragment p:bibliography)
if(p.tag!=null) p.tag.sequenceNumber = ++slot;
}
void dumpDocument() {
dumpDocumentPart(documentBody, parts[0]);
System.out.append("@footnote:");
dumpDocumentPart(bibliography, parts[1]);
}
DocumentFragment[] parseDocumentPart(String s) {
Matcher m = bibRefPattern.matcher(s);
DocumentFragment prev = new DocumentFragment(0,null);
ArrayList<DocumentFragment> pieces = new ArrayList<DocumentFragment>();
pieces.add(prev);
while(m.find()) {
prev.end = m.start(0);
String tlabel = s.substring(m.start(1),m.end(1));
BibliographyTag t = tags.get(tlabel);
if(t==null) { t = new BibliographyTag();
tags.put(tlabel, t); }
prev = new DocumentFragment(m.end(0),t);
pieces.add(prev);
}
prev.end = s.length();
return pieces.toArray(new DocumentFragment[pieces.size()]);
}
void dumpDocumentPart(DocumentFragment[] pieces, String part) {
for(DocumentFragment p:pieces) {
if(p.tag!=null) System.out.print("["+p.tag.sequenceNumber+"]");
System.out.append(part,p.start,p.end);
}
}
class DocumentFragment {
int start, end;
BibliographyTag tag;
DocumentFragment(int st, BibliographyTag t) { start = st; tag = t; }
}
class BibliographyTag { int sequenceNumber; }
HashMap<String,BibliographyTag> tags = new HashMap<String, BibliographyTag>();
}
