static int DisplayHashesFor(string connectionString, List <Query> queries, OutDir outDir, Formatter fn, HashAlgorithm algorithm)
{
var padding = queries.Select(q => q.Name.Length).Max();
var results = queries.Select(AsHashResult);
int exitCode = 0;
foreach (var result in results)
{
exitCode = Math.Max(result.ExitCode, exitCode);
DisplayHashFor(result);
}
return(exitCode);
HashResult AsHashResult(Query query) =>
GetHashResultFor(connectionString, query.Name, query.CommandText, outDir, fn, algorithm);
void DisplayHashFor(HashResult hashResult)
{
Console.Out.Write(hashResult.QueryName.PadRight(padding, ' '));
Console.Out.Write(" ");
hashResult.PrintValue(Console.Out, Console.Error);
}
}
static string ComputeHash(string connectionString, string name, string commandText, OutDir outDir, Formatter fn, HashAlgorithm algorithm)
{
string file = outDir.AddFile(name);
string text;
using (var stream = LoadData(connectionString, file, commandText, fn))
{
byte[] hash = algorithm.ComputeHash(stream);
StringBuilder sb = new StringBuilder(2 + hash.Length * 2);
sb.Append("0x");
foreach (var b in hash)
{
sb.Append(b.ToString("X2"));
}
text = sb.ToString();
}
return(text);
}
static HashResult GetHashResultFor(string connectionString, string name, string commandText, OutDir outDir, Formatter fn, HashAlgorithm algorithm)
{
Result <string, Exception> r = Try(ComputeHash, connectionString, name, commandText, outDir, fn, algorithm);
return(r.Map(hash => HashResult.Hash(name, hash))
.MapError(ex => HashResult.Error(name, ex.ToString()))
.UnwrapEither());
}
