private static void UpdateCardInteger(CardItem card, Action <int> method, string text, params Func <string, int>[] tests)
{
if (string.IsNullOrWhiteSpace(text))
{
return;
}
string formatted = text.Trim();
foreach (var test in tests)
{
int result = test(formatted);
if (result > 0)
{
method(result);
return;
}
}
int tmp;
if (int.TryParse(formatted, out tmp))
{
method(tmp);
}
}
private static void UpdateCardUsingOCR(string filename, CardItem card)
{
using (var engine = new TesseractEngine(@"./tessdata", "eng", EngineMode.Default))
using (var bitmap = RescaleBitmap(new Bitmap(filename), 2000, 2800))
using (var pix = PixConverter.ToPix(bitmap))
{
if (card.Job.Equals("Unit", StringComparison.OrdinalIgnoreCase))
{
string unitSubtitle = null;
using (var subtitle = engine.Process(pix, Rect.FromCoords(405, 205, 1750, 260), PageSegMode.SingleBlock))
{
unitSubtitle = subtitle.GetText();
}
if (string.IsNullOrWhiteSpace(unitSubtitle))
{
throw new NotSupportedException("Unit title could not be acquired by OCR.");
}
if (unitSubtitle.IndexOf("ATTACHMENT", StringComparison.OrdinalIgnoreCase) > -1)
{
card.UpdateAttachment();
using (var points = engine.Process(pix, Rect.FromCoords(1640, 2690, 1705, 2745), PageSegMode.SingleBlock))
{
UpdateCardInteger(card, card.UpdatePoints, points.GetText());
}
}
else
{
string unitCosts = null;
using (var costs = engine.Process(pix, Rect.FromCoords(1105, 2640, 1710, 2740), PageSegMode.SingleBlock))
{
unitCosts = costs.GetText();
}
if (string.IsNullOrWhiteSpace(unitCosts))
{
throw new NotSupportedException("Unit cost area could not be acquired by OCR.");
}
string[] lines = unitCosts.Split('\n');
var points = new List <string>();
var sizes = new List <string>();
for (int i = 0; i < lines.Length; i += 1)
{
if (string.IsNullOrWhiteSpace(lines[i]))
{
if (i == 0 || i == 1)
{
continue;
}
else
{
break;
}
}
// we're not whitespace, process the line with a poor regex
var matches = _unitCostExpression.Matches(lines[i]);
if (matches.Count == 1)
{
points.Add(matches[0].Groups[1].Value);
}
else if (matches.Count == 2)
{
sizes.Add(matches[0].Groups[1].Value);
points.Add(matches[1].Groups[1].Value);
}
}
if (points.Count == 1)
{
UpdateCardInteger(card, card.UpdatePoints, points[0]);
}
else if (points.Count == 2)
{
UpdateCardInteger(card, card.UpdatePointsMin, points[0]);
UpdateCardInteger(card, card.UpdatePointsMax, points[1]);
}
if (sizes.Count == 2)
{
UpdateCardInteger(card, card.UpdateSizeMin, sizes[0]);
UpdateCardInteger(card, card.UpdateSizeMax, sizes[1]);
}
}
}
else
{
using (var points = engine.Process(pix, Rect.FromCoords(1620, 2690, 1725, 2745), PageSegMode.SingleBlock))
{
UpdateCardInteger(card, card.UpdatePoints, points.GetText());
}
}
using (var fieldAllowance = engine.Process(pix, Rect.FromCoords(1830, 2690, 1890, 2745), PageSegMode.SingleBlock))
{
UpdateCardInteger(card, card.UpdateFieldAllowance, fieldAllowance.GetText(),
txt => txt.Equals("C", StringComparison.OrdinalIgnoreCase) ? 1 : -1,
txt => txt.Equals("U", StringComparison.OrdinalIgnoreCase) ? 999 : -1
);
}
}
}
private static async Task ProcessCard(DirectoryInfo factionDirectory, Stream stream, string cardKey, CardItem card)
{
var imageNames = new List <string>();
using (stream)
using (var document = PdfReader.Open(stream))
{
PdfDictionary resources = document.Pages.Elements.GetDictionary("/Resources");
PdfDictionary xObjects = resources.Elements.GetDictionary("/XObject");
foreach (var item in xObjects.Elements.Values)
{
var reference = item as PdfReference;
if (reference == null)
{
continue;
}
var xObject = reference.Value as PdfDictionary;
if (xObject == null || xObject.Elements.GetString("/Subtype") != "/Image")
{
continue;
}
if (xObject.Elements.GetInteger("/Height") != 1050 || xObject.Elements.GetInteger("/Width") != 750)
{
continue;
}
string cardName = $"{cardKey}-{imageNames.Count + 1}.jpg";
string filename = Path.Combine(factionDirectory.FullName, cardName);
using (var outfs = new FileStream(filename, FileMode.Create))
{
await outfs.WriteAsync(xObject.Stream.Value, 0, xObject.Stream.Value.Length);
await outfs.FlushAsync();
}
if (imageNames.Count == 0)
{
UpdateCardUsingOCR(filename, card);
}
imageNames.Add(cardName);
}
}
card.UpdateImageNames(imageNames);
}