public T TryParse <T>(string str, CrontabFieldAccumulator <T> acc, T success, Func <ExceptionProvider, T> errorSelector)
{
if (acc == null)
{
throw new ArgumentNullException(nameof(acc));
}
if (string.IsNullOrEmpty(str))
{
return(success);
}
try
{
return(InternalParse(str, acc, success, errorSelector));
}
catch (FormatException e)
{
return(OnParseException(e, str, errorSelector));
}
catch (CrontabException e)
{
return(OnParseException(e, str, errorSelector));
}
}
public ExceptionProvider TryParse(string str, CrontabFieldAccumulator acc, ExceptionHandler onError)
{
if (acc == null)
{
throw new ArgumentNullException("acc");
}
if (string.IsNullOrEmpty(str))
{
return(null);
}
try
{
return(InternalParse(str, acc, onError));
}
catch (FormatException e)
{
return(OnParseException(e, str, onError));
}
catch (CrontabException e)
{
return(OnParseException(e, str, onError));
}
}
/// <summary>
/// Parses the specified STR.
/// </summary>
/// <param name="str">The STR.</param>
/// <param name="acc">The acc.</param>
/// <remarks></remarks>
public void Parse(string str, CrontabFieldAccumulator acc)
{
if (acc == null)
{
throw new ArgumentNullException("acc");
}
if (string.IsNullOrEmpty(str))
{
return;
}
try
{
InternalParse(str, acc);
}
catch (FormatException e)
{
ThrowParseException(e, str);
}
catch (CrontabException e)
{
ThrowParseException(e, str);
}
}
private void InternalParse(string str, CrontabFieldAccumulator acc)
{
if (str.Length == 0)
{
throw new FormatException("A crontab field value cannot be empty.");
}
var commaIndex = str.IndexOf(",", StringComparison.Ordinal);
if (commaIndex > 0)
{
foreach (var token in str.Split(Comma))
{
InternalParse(token, acc);
}
}
else
{
var every = 1;
var slashIndex = str.IndexOf("/", StringComparison.Ordinal);
if (slashIndex > 0)
{
every = int.Parse(str.Substring(slashIndex + 1), CultureInfo.InvariantCulture);
str = str.Substring(0, slashIndex);
}
if (str.Length == 1 && str[0] == '*')
{
acc(-1, -1, every);
return;
}
var dashIndex = str.IndexOf("-", StringComparison.Ordinal);
if (dashIndex > 0)
{
var first = ParseValue(str.Substring(0, dashIndex));
var last = ParseValue(str.Substring(dashIndex + 1));
acc(first, last, every);
return;
}
var value = ParseValue(str);
if (every == 1)
{
acc(value, value, 1);
}
else
{
acc(value, _maxValue, every);
}
}
}
public void Parse(string str, CrontabFieldAccumulator <ExceptionProvider> acc) => TryParse(str, acc, null, ep => throw ep());
private void InternalParse(string str, CrontabFieldAccumulator acc)
{
Debug.Assert(str != null);
Debug.Assert(acc != null);
if (str.Length == 0)
{
throw new FormatException("A crontab field value cannot be empty.");
}
//
// Next, look for a list of values (e.g. 1,2,3).
//
var commaIndex = str.IndexOf(",", StringComparison.Ordinal);
if (commaIndex > 0)
{
foreach (var token in str.Split(Comma))
{
InternalParse(token, acc);
}
}
else
{
var every = 1;
//
// Look for stepping first (e.g. */2 = every 2nd).
//
var slashIndex = str.IndexOf("/", StringComparison.Ordinal);
if (slashIndex > 0)
{
every = int.Parse(str.Substring(slashIndex + 1), CultureInfo.InvariantCulture);
str = str.Substring(0, slashIndex);
}
//
// Next, look for wildcard (*).
//
if (str.Length == 1 && str[0] == '*')
{
acc(-1, -1, every);
return;
}
//
// Next, look for a range of values (e.g. 2-10).
//
var dashIndex = str.IndexOf("-", StringComparison.Ordinal);
if (dashIndex > 0)
{
var first = ParseValue(str.Substring(0, dashIndex));
var last = ParseValue(str.Substring(dashIndex + 1));
acc(first, last, every);
return;
}
//
// Finally, handle the case where there is only one number.
//
var value = ParseValue(str);
if (every == 1)
{
acc(value, value, 1);
}
else
{
Debug.Assert(every != 0);
acc(value, _maxValue, every);
}
}
}
T InternalParse <T>(string str, CrontabFieldAccumulator <T> acc, T success, Func <ExceptionProvider, T> errorSelector)
{
Debug.Assert(str != null);
Debug.Assert(acc != null);
if (str.Length == 0)
{
return(errorSelector(() => new CrontabException("A crontab field value cannot be empty.")));
}
//
// Next, look for a list of values (e.g. 1,2,3).
//
var commaIndex = str.IndexOf(",");
if (commaIndex > 0)
{
var result = success;
var token = ((IEnumerable <string>)str.Split(StringSeparatorStock.Comma)).GetEnumerator();
while (token.MoveNext() && result == null)
{
result = InternalParse(token.Current, acc, success, errorSelector);
}
return(result);
}
var every = 1;
//
// Look for stepping first (e.g. */2 = every 2nd).
//
var slashIndex = str.IndexOf("/");
if (slashIndex > 0)
{
every = int.Parse(str.Substring(slashIndex + 1), CultureInfo.InvariantCulture);
str = str.Substring(0, slashIndex);
}
//
// Next, look for wildcard (*).
//
if (str.Length == 1 && str[0] == '*')
{
return(acc(-1, -1, every, success, errorSelector));
}
//
// Next, look for a range of values (e.g. 2-10).
//
var dashIndex = str.IndexOf("-");
if (dashIndex > 0)
{
var first = ParseValue(str.Substring(0, dashIndex));
var last = ParseValue(str.Substring(dashIndex + 1));
return(acc(first, last, every, success, errorSelector));
}
//
// Finally, handle the case where there is only one number.
//
var value = ParseValue(str);
if (every == 1)
{
return(acc(value, value, 1, success, errorSelector));
}
Debug.Assert(every != 0);
return(acc(value, MaxValue, every, success, errorSelector));
}
private void InternalParse(string str, CrontabFieldAccumulator acc)
{
Debug.Assert(str != null);
Debug.Assert(acc != null);
if (str.Length == 0)
throw new CrontabException("A crontab field value cannot be empty.");
//
// Next, look for a list of values (e.g. 1,2,3).
//
var commaIndex = str.IndexOf(",");
if (commaIndex > 0)
{
foreach (var token in str.Split(_comma))
InternalParse(token, acc);
}
else
{
var every = 1;
//
// Look for stepping first (e.g. */2 = every 2nd).
//
var slashIndex = str.IndexOf("/");
if (slashIndex > 0)
{
every = int.Parse(str.Substring(slashIndex + 1), CultureInfo.InvariantCulture);
str = str.Substring(0, slashIndex);
}
//
// Next, look for wildcard (*).
//
if (str.Length == 1 && str[0]== '*')
{
acc(-1, -1, every);
return;
}
//
// Next, look for a range of values (e.g. 2-10).
//
var dashIndex = str.IndexOf("-");
if (dashIndex > 0)
{
var first = ParseValue(str.Substring(0, dashIndex));
var last = ParseValue(str.Substring(dashIndex + 1));
acc(first, last, every);
return;
}
//
// Finally, handle the case where there is only one number.
//
var value = ParseValue(str);
if (every == 1)
{
acc(value, value, 1);
}
else
{
Debug.Assert(every != 0);
acc(value, _maxValue, every);
}
}
}
/// <summary>
/// Parses the specified STR.
/// </summary>
/// <param name="str">The STR.</param>
/// <param name="acc">The acc.</param>
/// <remarks></remarks>
public void Parse(string str, CrontabFieldAccumulator acc)
{
if (acc == null)
throw new ArgumentNullException("acc");
if (string.IsNullOrEmpty(str))
return;
try
{
InternalParse(str, acc);
}
catch (FormatException e)
{
ThrowParseException(e, str);
}
catch (CrontabException e)
{
ThrowParseException(e, str);
}
}
private ExceptionProvider InternalParse(string str, CrontabFieldAccumulator acc, ExceptionHandler onError)
{
Debug.Assert(str != null);
Debug.Assert(acc != null);
if (str.Length == 0)
return ErrorHandling.OnError(() => new CrontabException("A crontab field value cannot be empty."), onError);
//
// Next, look for a list of values (e.g. 1,2,3).
//
var commaIndex = str.IndexOf(",");
if (commaIndex > 0)
{
ExceptionProvider e = null;
var token = ((IEnumerable<string>)str.Split(_comma)).GetEnumerator();
while (token.MoveNext() && e == null)
e = InternalParse(token.Current, acc, onError);
return e;
}
var every = 1;
//
// Look for stepping first (e.g. */2 = every 2nd).
//
var slashIndex = str.IndexOf("/");
if (slashIndex > 0)
{
every = int.Parse(str.Substring(slashIndex + 1), CultureInfo.InvariantCulture);
str = str.Substring(0, slashIndex);
}
//
// Next, look for wildcard (*).
//
if (str.Length == 1 && str[0] == '*')
{
return acc(-1, -1, every, onError);
}
//
// Next, look for a range of values (e.g. 2-10).
//
var dashIndex = str.IndexOf("-");
if (dashIndex > 0)
{
var first = ParseValue(str.Substring(0, dashIndex));
var last = ParseValue(str.Substring(dashIndex + 1));
return acc(first, last, every, onError);
}
//
// Finally, handle the case where there is only one number.
//
var value = ParseValue(str);
if (every == 1)
return acc(value, value, 1, onError);
Debug.Assert(every != 0);
return acc(value, _maxValue, every, onError);
}
public ExceptionProvider TryParse(string str, CrontabFieldAccumulator acc, ExceptionHandler onError)
{
if (acc == null)
throw new ArgumentNullException("acc");
if (string.IsNullOrEmpty(str))
return null;
try
{
return InternalParse(str, acc, onError);
}
catch (FormatException e)
{
return OnParseException(e, str, onError);
}
catch (CrontabException e)
{
return OnParseException(e, str, onError);
}
}
public void Parse(string str, CrontabFieldAccumulator acc)
{
TryParse(str, acc, ErrorHandling.Throw);
}
public void Parse(string str, CrontabFieldAccumulator acc)
{
TryParse(str, acc, ErrorHandling.Throw);
}
