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[Style] Let clean hashes bail out early in error cases

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This commit is contained in:
Matt Nadareski
2017-03-17 11:22:48 -07:00
parent 8d110fb68f
commit fdc08d8b52
1 changed files with 31 additions and 17 deletions
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48
SabreTools.Helper/Tools/Style.cs
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@@ -64,28 +64,42 @@ namespace SabreTools.Helper.Tools
/// <returns>Cleaned string</returns>
public static string CleanHashData(string hash, int padding)
{
// First get the hash to the correct length
hash = (String.IsNullOrEmpty(hash) ? "" : hash.Trim());
hash = (hash.StartsWith("0x") ? hash.Remove(0, 2) : hash);
hash = (hash == "-" ? "" : hash);
hash = (String.IsNullOrEmpty(hash) ? "" : hash.PadLeft(padding, '0'));
// If we have a known blank hash, return blank
if (string.IsNullOrEmpty(hash) || hash == "-" || hash == "_")
{
return "";
}
// Check to see if it's a "hex" hash
hash = hash.Trim().Replace("0x", "");
// If we have a blank hash now, return blank
if (string.IsNullOrEmpty(hash))
{
return "";
}
// If the hash shorter than the required length, pad it
if (hash.Length < padding)
{
hash = hash.PadLeft(padding, '0');
}
// If the hash is longer than the required length, it's invalid
else if (hash.Length > padding)
{
return "";
}
// Now normalize the hash
hash = hash.ToLowerInvariant();
// If the hash still isn't the right length, blank it out
if (hash.Length != padding)
{
hash = "";
}
// Otherwise, make sure that every character is a proper match
else
for (int i = 0; i < hash.Length; i++)
{
for (int i = 0; i < hash.Length; i++)
if ((hash[i] < '0' || hash[i] > '9') && (hash[i] < 'a' || hash[i] > 'f'))
{
if ((hash[i] < '0' || hash[i] > '9') && (hash[i] < 'a' || hash[i] > 'f'))
{
hash = "";
break;
}
hash = "";
break;
}
}