public static void Example()
{
// You have a few options, depending on how much detail you want.
// Note that all of the "Xtractor.Xtractor.CoordinateOrigin" arguments are optional.
using (Xtractor.Xtractor xtractor = new Xtractor.Xtractor(@"..\..\..\Input\Xtractor.Input.pdf"))
{
string searchPhrase = "ActivePDF";
// Gives back the bounding box of each occurrance of "ActivePDF" on page 1,
// and results are relative to the top-left corner of the page.
Console.WriteLine($"Retrieve the bounding box coordinates for all instances of {searchPhrase} on page one.");
RectangleF[] page1BoundingBoxes = xtractor.FindText(text: searchPhrase, pageNumber: 1, origin: Xtractor.Xtractor.CoordinateOrigin.TopLeft);
Console.WriteLine($"{page1BoundingBoxes.Length.ToString()} instance(s) of {searchPhrase} found on page 1.");
foreach (RectangleF boundingBox in page1BoundingBoxes)
{
Console.WriteLine($" Box: ({boundingBox.X}, {boundingBox.Y}), ({boundingBox.X + boundingBox.Width}, {boundingBox.Y + boundingBox.Height})");
}
Console.WriteLine();
// Gives back the bounding box of each occurrance of "ActivePDF" in the document.
// Results are relative to the top-left corner of the page.
// The first dimension of the array is sorted by page number,
// so wholeDocumentBoundingBoxes[0] contains the same data as page1BoundingBoxes.
Console.WriteLine($"Retrieve the bounding box coordinates for all instances of {searchPhrase} in the document.");
RectangleF[][] wholeDocumentBoundingBoxes = xtractor.FindText(text: searchPhrase, origin: Xtractor.Xtractor.CoordinateOrigin.TopLeft);
for (int i = 0; i < wholeDocumentBoundingBoxes.Length; ++i)
{
Console.WriteLine($"{wholeDocumentBoundingBoxes[i].Length.ToString()} instance(s) of {searchPhrase} found on page {i + 1}.");
for (int j = 0; j < wholeDocumentBoundingBoxes[i].Length; ++j)
{
RectangleF boundingBox = wholeDocumentBoundingBoxes[i][j];
Console.WriteLine($" Box: ({boundingBox.X}, {boundingBox.Y}), ({boundingBox.X + boundingBox.Width}, {boundingBox.Y + boundingBox.Height})");
}
}
// Uses the regex @"\w+" to find all words on page 1. Gets back each word and location found.
// Returned coordinates are given relative to the bottom left corner, in PDF units.
Tuple <string, RectangleF>[] allWordsPage1 = xtractor.FindText(new Regex(@"\w+"), 1, Xtractor.Xtractor.CoordinateOrigin.BottomLeft);
// Uses the regex @"\w+" to find all words in the document. Gets back each word and location found.
// Returned coordinates are given relative to the bottom left corner, in PDF units.
// allWordsWholeDocument[0] contains the same data as allWordsPage1.
Tuple <string, RectangleF>[][] allWordsWholeDocument = xtractor.FindText(re: new Regex(@"\w+"), origin: Xtractor.Xtractor.CoordinateOrigin.BottomLeft);
// Extracts the location of each individual character on page 1. Coordinates are relative to the top left corner.
// The order of characters is in the PDF's order, which may or may not be in natural reading order.
Xtractor.CharAndBox[] eachCharacterPage1 = xtractor.ExtractTextWithLocation(pageNumber: 1, origin: Xtractor.Xtractor.CoordinateOrigin.TopLeft);
// Extracts the location of each individual character in the whole document. Coordinates are relative to the bottom left corner.
// eachCharacterWholeDocument[0] contains the same characters in the same order as eachCharacterPage1, but the
// coordinates returned will differ because they used different coordinate spaces when they were called.
// Coordinates will match if they used the same coordinate space.
// The order of characters is in the PDF's order, which may or may not be in natural reading order.
Xtractor.CharAndBox[][] eachCharacterWholeDocument = xtractor.ExtractTextWithLocation(origin: Xtractor.Xtractor.CoordinateOrigin.BottomLeft);
}
}
public static void Example()
{
using (Xtractor.Xtractor xtractor = new Xtractor.Xtractor(filename: @"..\..\..\Input\Xtractor.Input.pdf"))
{
/*
* PDF documents don't always store the desired reading order of the text.
* Even if it does, the text is not required to be stored in the reading
* order for that language. Some languages even have multiple acceptible
* reading orders. Thus, Xtractor cannot guarantee getting text back in the
* desired reading order for a given language.
*
* However, if you know what reading order you expect from your document,
* it is still quite easy to get the desired result using LINQ. The example
* below sorts the text for English, meaning top -> bottom first,
* and left -> right second.
*/
Console.WriteLine("Extracting document text by reading order ...");
Xtractor.CharAndBox[] englishText = xtractor.ExtractTextWithLocation(pageNumber: 1, origin: Xtractor.Xtractor.CoordinateOrigin.BottomLeft);
IEnumerable <Xtractor.CharAndBox> sortedText = englishText.OrderBy(cab => cab.Box.Y).ThenBy(cab => cab.Box.X);
StringBuilder stringBuilder = new StringBuilder();
foreach (Xtractor.CharAndBox character in sortedText)
{
stringBuilder.Append(character.Character);
}
Console.WriteLine($"Document Text: {stringBuilder.ToString()}");
}
}
