File indexing completed on 2024-06-23 04:52:41

 /*
         SPDX-FileCopyrightText: 2007-2009 Sergio Pistone <sergio_pistone@yahoo.com.ar>
 
         SPDX-License-Identifier: GPL-2.0-or-later
 
         @category Examples
         @name Iterate Selected Lines
         @version 1.0
         @summary Example script to iterate over selected lines and show their text.
         @author SubtitleComposer Team
 */
 
 function RangesIterator(rangeList, forward) {
         this.forward = forward === undefined ? true : forward;
         this.rangeList = rangeList;
         this.rangeIndex = this.forward ? -1 : this.rangeList.rangesCount()
 
         this.current = function() {
                 return this.rangeIndex >= 0 && this.rangeIndex < this.rangeList.rangesCount() ?
                         this.rangeList.range(this.rangeIndex) :
                         null;
         };
 
         this.hasNext = function() {
                 return this.forward ?
                         this.rangeIndex < this.rangeList.rangesCount() - 1 :
                         this.rangeIndex > 0;
         };
 
         this.next = function() {
                 this.rangeIndex += this.forward ? 1 : -1;
                 return this.current();
         };
 }
 
 function LinesIterator(rangeList, forward) {
         this.forward = forward === undefined ? true : forward;
         this.rangesIt = new RangesIterator(rangeList, this.forward);
         this.lineIndex = -1;
         this.subtitle = subtitle.instance();
 
         this.current = function() {
                 let range = this.rangesIt.current();
                 return range != null && this.lineIndex >= range.start() && this.lineIndex < range.end()
                                 ? this.subtitle.line(this.lineIndex) : null;
         };
 
         this.hasNext = function() {
                 return this.rangesIt.hasNext() || (this.rangesIt.current() &&
                         (this.forward ? this.lineIndex < this.rangesIt.current().end() : this.lineIndex > this.rangesIt.current().start())
                         );
         };
 
         this.next = function() {
                 let currentRange = this.rangesIt.current();
                 if(currentRange == null || (this.lineIndex == (forward ? currentRange.end() : currentRange.start()))) {
                         if(!this.rangesIt.hasNext())
                                 return null;
                         currentRange = this.rangesIt.next();
                         this.lineIndex = this.forward ? currentRange.start() : currentRange.end();
                 } else {
                         this.lineIndex += this.forward ? 1 : -1;
                 }
                 return this.subtitle.line(this.lineIndex);
         };
 }
 
 let rangesIt = new RangesIterator(ranges.newSelectionRangeList(), true);
 while(rangesIt.hasNext()) {
         let range = rangesIt.next();
         debug.information( range.start().toString() + ":" + range.end().toString() );
 }
 
 let linesIt = new LinesIterator( ranges.newSelectionRangeList(), false );
 while(linesIt.hasNext()) {
         let line = linesIt.next();
         debug.information("Plain text: " + line.plainPrimaryText() + "\n\nRich Text: " + line.richPrimaryText());
 }