/**
* Filters the provided list with the provided filter
* @param textChunks a list of all TextChunks that this strategy found during processing
* @param filter the filter to apply. If null, filtering will be skipped.
* @return the filtered list
* @since 5.3.3
*/
private List <TextChunk> filterTextChunks(List <TextChunk> textChunks, ITextChunkFilter filter)
{
if (filter == null)
{
return(textChunks);
}
List <TextChunk> filtered = new List <TextChunk>();
foreach (TextChunk textChunk in textChunks)
{
if (filter.Accept(textChunk))
{
filtered.Add(textChunk);
}
}
return(filtered);
}
/**
* Gets text that meets the specified filter
* If multiple text extractions will be performed for the same page (i.e. for different physical regions of the page),
* filtering at this level is more efficient than filtering using {@link FilteredRenderListener} - but not nearly as powerful
* because most of the RenderInfo state is not captured in {@link TextChunk}
* @param chunkFilter the filter to to apply
* @return the text results so far, filtered using the specified filter
*/
public virtual String GetResultantText(ITextChunkFilter chunkFilter)
{
if (DUMP_STATE)
{
DumpState();
}
List <TextChunk> filteredTextChunks = filterTextChunks(locationalResult, chunkFilter);
filteredTextChunks.Sort();
StringBuilder sb = new StringBuilder();
TextChunk lastChunk = null;
foreach (TextChunk chunk in filteredTextChunks)
{
if (lastChunk == null)
{
sb.Append(chunk.Text);
}
else
{
if (chunk.SameLine(lastChunk))
{
// we only insert a blank space if the trailing character of the previous string wasn't a space, and the leading character of the current string isn't a space
if (IsChunkAtWordBoundary(chunk, lastChunk) && !StartsWithSpace(chunk.Text) && !EndsWithSpace(lastChunk.Text))
{
sb.Append(' ');
}
sb.Append(chunk.Text);
}
else
{
sb.Append('\n');
sb.Append(chunk.Text);
}
}
lastChunk = chunk;
}
return(sb.ToString());
}
/**
* Gets text that meets the specified filter
* If multiple text extractions will be performed for the same page (i.e. for different physical regions of the page),
* filtering at this level is more efficient than filtering using {@link FilteredRenderListener} - but not nearly as powerful
* because most of the RenderInfo state is not captured in {@link TextChunk}
*
* @param chunkFilter the filter to to apply
* @return the text results so far, filtered using the specified filter
*
* edit to collect terms
*/
public virtual String GetResultantText(ITextChunkFilter chunkFilter)
{
List <TextChunk> filteredTextChunks = filterTextChunks(locationalResult, chunkFilter);
filteredTextChunks.Sort();
List <TextWithRect> tmpList = new List <TextWithRect>();
StringBuilder sb = new StringBuilder();
TextChunk lastChunk = null;
foreach (TextChunk chunk in filteredTextChunks)
{
if (chunk.Text.Equals(" "))
{
continue;
}
if (lastChunk == null)
{
sb.Append(chunk.Text);
var rect = chunk.Rectangle;
tmpList.Add(new TextWithRect {
Rect = rect, Text = chunk.Text
});
}
else
{
if (chunk.SameLine(lastChunk))
{
// we only insert a blank space if the trailing character of the previous string wasn't a space, and the leading character of the current string isn't a space
if (IsChunkAtWordBoundary(chunk, lastChunk) && !StartsWithSpace(chunk.Text) && !EndsWithSpace(lastChunk.Text))
{
sb.Append(' ');
if (tmpList.Count > 0)
{
mergeAndStoreChunk(tmpList);
tmpList.Clear();
}
}
sb.Append(chunk.Text);
var rect = chunk.Rectangle;
tmpList.Add(new TextWithRect {
Rect = rect, Text = chunk.Text
});
}
else
{
sb.Append('\n');
if (tmpList.Count > 0)
{
mergeAndStoreChunk(tmpList);
tmpList.Clear();
}
sb.Append(chunk.Text);
var rect = chunk.Rectangle;
tmpList.Add(new TextWithRect {
Rect = rect, Text = chunk.Text
});
}
}
lastChunk = chunk;
}
matchTopicTerms();
return(sb.ToString());
}
