/// <summary>
/// Compares two SpanStrings using an ordinal comparison.
/// </summary>
/// <param name="a">The first string to compare.</param>
/// <param name="b">The second string to compare.</param>
/// <returns>True if the strings are equal.</returns>
public static bool EqualsIgnoreCase(SpanString2 a, SpanString1 b)
{
if (a.Length != b.Length)
{
return(false);
}
var s1Enum = new Enumerator(a);
var s2Enum = new SpanString1.Enumerator(b);
for (int i = 0; i < a.Length; i++)
{
int c1 = SpanStringComparer.ToUpperAscii(s1Enum.Next());
int c2 = SpanStringComparer.ToUpperAscii(s2Enum.Next());
if (c1 != c2)
{
return(false);
}
}
return(true);
}
/// <summary>
/// Compares two SpanStrings using an ordinal comparison.
/// </summary>
/// <param name="a">The first string to compare.</param>
/// <param name="b">The second string to compare.</param>
/// <returns>True if the strings are equal.</returns>
public static bool Equals(SpanString2 a, SpanString1 b)
{
if (a.Length != b.Length)
{
return(false);
}
var s1Enum = new Enumerator(a);
var s2Enum = new SpanString1.Enumerator(b);
for (int i = 0; i < a.Length; i++)
{
int c1 = s1Enum.Next();
int c2 = s2Enum.Next();
if (c1 != c2)
{
return(false);
}
}
return(true);
}
/// <summary>
/// Compares this instance with a specified SpanString1 using an ordinal
/// comparison and case-insensitivity, and indicates whether this
/// instance precedes, follows, or appears in the same position
/// in the sort order as the specified string.
/// </summary>
/// <param name="other">The string to compare with this instance.</param>
/// <returns>A 32-bit signed integer that indicates whether this instance precedes, follows, or appears in the same position in the sort order as the strB parameter.</returns>
public int CompareToIgnoreCase(SpanString1 other)
{
// Adapted from https://referencesource.microsoft.com/#mscorlib/system/string.cs CompareOrdinalHelper()
int length = Math.Min(Length, other.Length);
var s1Enum = new Enumerator(this);
var s2Enum = new SpanString1.Enumerator(other);
for (int i = 0; i < length; i++)
{
int c1 = SpanStringComparer.ToUpperAscii(s1Enum.Next());
int c2 = SpanStringComparer.ToUpperAscii(s2Enum.Next());
int cmp = c1.CompareTo(c2);
if (cmp != 0)
{
return(cmp);
}
}
// At this point, we have compared all the characters in at least one string.
// The longer string will be larger.
return(Length - other.Length);
}
