private void ReadPdf(String pdfSourceFile)
{
PdfReader pdfReader = new PdfReader(pdfSourceFile);
//get column x-locations on page 1
var strategy = new MyLocationTextExtractionStrategy();
var pageOneText = PdfTextExtractor.GetTextFromPage(pdfReader, 1, strategy);
GetColumnXPoints(strategy);
//loop thru grid data
for (int page = 1; page <= pdfReader.NumberOfPages; page++)
{
strategy = new MyLocationTextExtractionStrategy();
var allPageText = PdfTextExtractor.GetTextFromPage(pdfReader, page, strategy);
var isContinue = FillDataSet(strategy);
if (!isContinue)
{
break;
}
}
pdfReader.Close();
var csv = ConvertDataSetToCSV();
WriteFile("longbeach_crime.csv", csv);
}
private bool FillDataSet(MyLocationTextExtractionStrategy strategy)
{
var isContinue = true;
var row = new Dictionary <CrimeCodes, int>();
var shouldStart = false;
foreach (MyLocationTextExtractionStrategy.TextChunk chunk in strategy.locationalResult)
{
try
{
//get current text (should be string of integer)
var text = chunk.text.Trim();
//time to end
if (text.Equals("SHPD") || text.Equals("Unk"))
{
//if the end is reached we don't want to iterate more pages in ReadPdf()
isContinue = false;
break;
}
//loop until first 3 digit region code appears
if (text.Length == 3)
{
shouldStart = true;
}
//skip over first few rows of header text column names
if (!shouldStart)
{
continue;
}
//if text is 3 digit region code, write row and clear for new row
if (text.Length == 3)
{
WriteRow(ref row);
}
//convert to integer, default to zero
var count = 0;
if (!Int32.TryParse(text, out count))
{
continue;
}
//get x location of current text
float xloc = chunk.startLocation[0];
//get correct columnt o use given the text's x location
var crimeCode = GetCrimeCode(xloc);
row.Add(crimeCode, count);
Console.WriteLine(text);
}
catch (Exception ex)
{
Console.Write($"Error: {chunk.text}, {ex.Message}");
}
}
WriteRow(ref row);
return(isContinue);
}
private void GetColumnXPoints(MyLocationTextExtractionStrategy strategy)
{
CodeLookup.Clear();
foreach (MyLocationTextExtractionStrategy.TextChunk chunk in strategy.locationalResult)
{
string text = chunk.text.Trim().Replace(" ", "_");
//extract year/month
if (text.StartsWith("REPORT_MONTH") && text.IndexOf('=') > -1 && text.IndexOf('/') > -1 && text.IndexOf('-') > -1)
{
//"REPORT_MONTH_=_01/01/2017_-_01/31/2017"
var str1 = text.Replace("_", "").Split('=')[1];
//"01/01/2017-01/31/2017"
var monthStr = str1.Split('/')[0];
var yearStr = str1.Split('/')[2].Split('-')[0];
Int32.TryParse(monthStr, out month);
Int32.TryParse(yearStr, out year);
continue;
}
CrimeCodes crimeCode;
if (Enum.TryParse <CrimeCodes>(text, true, out crimeCode) && Enum.IsDefined(typeof(CrimeCodes), text))
{
//special considerations
if (text.Equals("AUTO") && !CodeLookup.ContainsKey(CrimeCodes.BIKE))
{
continue;
}
else if (text.Equals("TOTAL") && !CodeLookup.ContainsKey(CrimeCodes.PART_2))
{
continue;
}
//Add enum and float to Lookup List
if (!CodeLookup.ContainsKey(crimeCode))
{
CodeLookup.Add(crimeCode, chunk.startLocation[0].Truncate(0));
}
}
}
//order columns by x location
CodeLookup = CodeLookup.OrderBy(x => x.Value).ToDictionary(x => x.Key, x => x.Value);
}
