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import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.apache.poi.xwpf.usermodel.IBodyElement;
import org.apache.poi.xwpf.usermodel.XWPFDocument;
import org.apache.poi.xwpf.usermodel.XWPFParagraph;
import org.apache.poi.xwpf.usermodel.XWPFRun;
import org.apache.poi.xwpf.usermodel.XWPFTable;
import org.apache.poi.xwpf.usermodel.XWPFTableCell;
import org.apache.poi.xwpf.usermodel.XWPFTableRow;
public class WordPatcher {
//private final Pattern PATTERN = Pattern.compile("\\$\\{([^:]*?)\\}");
private final Pattern PATTERN = Pattern.compile("\\$\\{(.*?)\\}");
private DataProvider dataProvider;
public WordPatcher(DataProvider dataProvider) {
this.dataProvider=dataProvider;
}
public void patch(InputStream inputStream, OutputStream outputStream) throws IOException {
@SuppressWarnings("resource")
XWPFDocument document = new XWPFDocument(inputStream);
for(IBodyElement element : (Iterable<IBodyElement>)()->document.getBodyElementsIterator()) {
patch(element);
}
document.write(outputStream);
}
private void patch(IBodyElement element) {
switch(element.getElementType()) {
case PARAGRAPH:
patch((XWPFParagraph)element);
break;
case TABLE:
patch((XWPFTable)element);
break;
case CONTENTCONTROL:
default:
}
}
private void patch(XWPFTable element) {
for(XWPFTableRow row : element.getRows()) {
patch(row);
}
}
private void patch(XWPFTableRow row) {
for(XWPFTableCell cell : row.getTableCells()) {
patch(cell);
}
}
private void patch(XWPFTableCell cell) {
for(IBodyElement element : cell.getBodyElements()) {
patch(element);
}
}
private void patch(XWPFParagraph element) {
List<XWPFRun> runs = element.getRuns();
patchRuns(element, runs);
/*for(XWPFRun run : element.getRuns()) {
patch(run);
}*/
}
private void patchRuns(XWPFParagraph parent, List<XWPFRun> runs) {
for(int i=0; i<runs.size(); ) {
i = patch(runs, i);
}
}
private int patch(List<XWPFRun> runs, int i) {
XWPFRun run = runs.get(i);
patch(run); // effectue le remplacement dans le run, si le motif est inclus dans le run
// cherche si on a pas le motif qui couvre plusieurs runs, et si oui, on transfert vers un run unique, puis on effectue le remplacement sur ce run
String text = run.getText(0);
if ( text!=null ) {
if ( text.contains("${") ) {
int endRun = findEndRun(runs, i+1);
if ( endRun!=-1 ) {
i = compactAndPatch(runs, i, endRun);
}
}
else if ( text.contains("$") ) {
String nextRunText = nextRunText(runs, i);
if ( nextRunText!=null ) {
if ( text.startsWith("{") ) {
int endRun = findEndRun(runs, i+1);
if ( endRun!=-1 ) {
i = compactAndPatch(runs, i, endRun);
}
}
}
}
}
return i+1;
}
private int compactAndPatch(List<XWPFRun> runs, int startRunIndex, int endRunIndex) {
XWPFRun startRun = runs.get(startRunIndex);
XWPFRun endRun = runs.get(endRunIndex);
int startPos = startRun.getText(0).indexOf("$");
int endPos = endRun.getText(0).indexOf("}");
StringBuilder builder = new StringBuilder(startRun.getText(0).substring(startPos));
for(int i = startRunIndex+1; i<endRunIndex; i++) {
builder.append(runs.get(i).getText(0));
runs.get(i).setText("",0);
}
builder.append(endRun.getText(0).substring(0, endPos+1));
patch(startRun.getText(0).substring(0,startPos)+builder, startRun);
if ( endPos==endRun.getText(0).length()-1 ) {
endRun.setText("",0);
}
else {
endRun.setText(endRun.getText(0).substring(endPos+1),0);
}
return startRunIndex;
}
private int findEndRun(List<XWPFRun> runs, int start) {
for(int i=start; i<runs.size(); i++) {
if ( runs.get(i).getText(0).contains("}") ) {
return i;
}
}
return -1;
}
private String nextRunText(List<XWPFRun> runs, int index) {
if (index<runs.size()) {
return runs.get(index).getText(0);
}
return null;
}
private void patch(XWPFRun run) {
String text = run.getText(0);
patch(text, run);
}
private void patch(String text, XWPFRun run) {
if ( text!=null ) {
StringBuffer sb = new StringBuffer();
// TODO : voir s'il n'y a pas un décalage d'offset à gérer
Matcher matcher = PATTERN.matcher(text);
while( matcher.find() ) {
Replacement replacement = getReplacement(matcher.start(), matcher.end(), matcher.group(1));
replacement.replace(run, matcher, sb);
}
matcher.appendTail(sb);
run.setText(sb.toString(),0);
}
}
private Replacement getReplacement(int start, int end, String description) {
if( description.startsWith("image:") ) {
Image image = Image.getImage(dataProvider, start, description.split(":"));
return new ImageReplacement(image);
}
else if ( dataProvider.isImage(description) ) {
Image image = Image.getImage(dataProvider, start, description);
return new ImageReplacement(image);
}
Replacement replacement = new TextReplacement(dataProvider.getValue(description));
if ( dataProvider.isDynamic() ) {
if ( dataProvider.isImage(description) ) {
Image image = Image.getImage(dataProvider, start, description);
return new ImageReplacement(image);
}
}
return replacement;
}
} |
