public static void ReadSourceCodeRequirements(string filePath, ref ReqPathMatrix codeReqLookup)
{
// Read the file as one string.
System.IO.StreamReader fileAsStream = new System.IO.StreamReader(filePath);
string fileAsString = fileAsStream.ReadToEnd();
fileAsStream.Close();
// Look for requirement references in the format something_SRS_something_123 or SRS_something_123
// or _something_SRS_something_123 and _SRS_something_123
string pattern = @"\b[A-Za-z_]*_?SRS_\w+_\d{2}_\d{3}";
int lineNum = 1; // Start counting lines from 1.
int pos = 0; // First character index for a regular expression match is 0.
foreach (Match m in Regex.Matches(fileAsString, pattern))
{
while (pos < fileAsString.Length && pos < m.Index)
{
if (fileAsString[pos] == '\n')
{
lineNum++;
}
pos++;
}
codeReqLookup.Add(m.Value, new FilePathLineNum(filePath, lineNum));
}
}
