public static UriTemplatePathSegment CreateFromUriTemplate(string segment, UriTemplate template)
{
// Identifying the type of segment - Literal|Compound|Variable
switch (UriTemplateHelpers.IdentifyPartType(segment))
{
case UriTemplatePartType.Literal:
return(UriTemplateLiteralPathSegment.CreateFromUriTemplate(segment, template));
case UriTemplatePartType.Compound:
return(UriTemplateCompoundPathSegment.CreateFromUriTemplate(segment, template));
case UriTemplatePartType.Variable:
if (segment.EndsWith("/", StringComparison.Ordinal))
{
var varName = template.AddPathVariable(UriTemplatePartType.Variable,
segment.Substring(1, segment.Length - 3));
return(new UriTemplateVariablePathSegment(segment, true, varName));
}
else
{
var varName = template.AddPathVariable(UriTemplatePartType.Variable,
segment.Substring(1, segment.Length - 2));
return(new UriTemplateVariablePathSegment(segment, false, varName));
}
default:
throw new Exception("Invalid value from IdentifyStringNature");
}
}
public static new UriTemplateCompoundPathSegment CreateFromUriTemplate(string segment, UriTemplate template)
{
var origSegment = segment;
var endsWithSlash = segment.EndsWith("/", StringComparison.Ordinal);
if (endsWithSlash)
{
segment = segment.Remove(segment.Length - 1);
}
var nextVarStart = segment.IndexOf("{", StringComparison.Ordinal);
Ensure.Nonnegative(nextVarStart,
"The method is only called after identifying a '{' character in the segment");
var firstLiteral = ((nextVarStart > 0) ? segment.Substring(0, nextVarStart) : string.Empty);
if (firstLiteral.IndexOf(UriTemplate.WildcardPath, StringComparison.Ordinal) != -1)
{
throw new FormatException($"UTInvalidWildcardInVariableOrLiteral {template.OriginalTemplate} {UriTemplate.WildcardPath}");
}
var result = new UriTemplateCompoundPathSegment(origSegment, endsWithSlash,
((firstLiteral != string.Empty) ? Uri.UnescapeDataString(firstLiteral) : string.Empty));
do
{
var nextVarEnd = segment.IndexOf("}", nextVarStart + 1, StringComparison.Ordinal);
if (nextVarEnd < nextVarStart + 2)
{
throw new FormatException($"UTInvalidFormatSegmentOrQueryPart {segment}");
}
bool hasDefault;
var varName = template.AddPathVariable(UriTemplatePartType.Compound,
segment.Substring(nextVarStart + 1, nextVarEnd - nextVarStart - 1), out hasDefault);
if (hasDefault)
{
throw new InvalidOperationException(
$"UTDefaultValueToCompoundSegmentVar template:{template},origSegment:{origSegment},varName:{varName}");
}
nextVarStart = segment.IndexOf("{", nextVarEnd + 1, StringComparison.Ordinal);
string literal;
if (nextVarStart > 0)
{
if (nextVarStart == nextVarEnd + 1)
{
throw new ArgumentException($"UTDoesNotSupportAdjacentVarsInCompoundSegment template:{template},segment:{segment}");
}
literal = segment.Substring(nextVarEnd + 1, nextVarStart - nextVarEnd - 1);
}
else if (nextVarEnd + 1 < segment.Length)
{
literal = segment.Substring(nextVarEnd + 1);
}
else
{
literal = string.Empty;
}
if (literal.IndexOf(UriTemplate.WildcardPath, StringComparison.Ordinal) != -1)
{
throw new FormatException($"UTInvalidWildcardInVariableOrLiteral {template.OriginalTemplate} {UriTemplate.WildcardPath}");
}
if (literal.IndexOf('}') != -1)
{
throw new FormatException($"UTInvalidFormatSegmentOrQueryPart {segment}");
}
result._varLitPairs.Add(new VarAndLitPair(varName, ((literal == string.Empty) ? string.Empty : Uri.UnescapeDataString(literal))));
} while (nextVarStart > 0);
if (string.IsNullOrEmpty(result._firstLiteral))
{
if (string.IsNullOrEmpty(result._varLitPairs[result._varLitPairs.Count - 1].Literal))
{
result._csClass = CompoundSegmentClass.HasNoPrefixNorSuffix;
}
else
{
result._csClass = CompoundSegmentClass.HasOnlySuffix;
}
}
else
{
if (string.IsNullOrEmpty(result._varLitPairs[result._varLitPairs.Count - 1].Literal))
{
result._csClass = CompoundSegmentClass.HasOnlyPrefix;
}
else
{
result._csClass = CompoundSegmentClass.HasPrefixAndSuffix;
}
}
return(result);
}
