public static string ReplaceSchemas(this string xml, QtiResourceType resourceType, QtiVersion newVersion, QtiVersion oldVersion, bool localSchema)
{
var tagName = resourceType == QtiResourceType.AssessmentItem ? "assessmentItem" :
resourceType == QtiResourceType.AssessmentTest ? "assessmentTest" :
"manifest";
var baseScheme = GetBaseSchema(resourceType, newVersion);
var baseSchemeLocation = GetBaseSchemaLocation(resourceType, newVersion);
var qtiParentTag = Regex.Match(xml, $"<{tagName}(.*?)>").Value;
var qtiParentOrg = qtiParentTag;
var schemaPrefix = Regex.Match(qtiParentTag, " (.*?)schemaLocation")
.Value.Replace(":schemaLocation", "").Trim();
schemaPrefix = schemaPrefix.Substring(schemaPrefix.LastIndexOf(" ", StringComparison.Ordinal), schemaPrefix.Length - schemaPrefix.LastIndexOf(" ", StringComparison.Ordinal)).Trim();
var schemaLocations = Regex.Match(qtiParentTag, @$ "{schemaPrefix}:schemaLocation=" "(.*?)" "").Value;
var extensionSchemas = RemoveSchemaFromLocation(schemaLocations, GetBaseSchema(resourceType, oldVersion));
if (resourceType == QtiResourceType.Manifest)
{
extensionSchemas = RemoveSchemaFromLocation(extensionSchemas, GetBaseSchema(QtiResourceType.AssessmentItem, oldVersion));
extensionSchemas = extensionSchemas +
$" {GetBaseSchema(QtiResourceType.AssessmentItem, newVersion)} {GetBaseSchemaLocation(QtiResourceType.AssessmentItem, newVersion)}";
}
qtiParentTag = Regex.Replace(qtiParentTag, @$ "{schemaPrefix}:schemaLocation=" "(.*?)" "", "");
qtiParentTag = Regex.Replace(qtiParentTag, @$ "xmlns:{schemaPrefix}=" "(.*?)" "", "");
qtiParentTag = Regex.Replace(qtiParentTag, @$ "xmlns:xsi=" "(.*?)" "", "");
qtiParentTag = Regex.Replace(qtiParentTag, @"xmlns=""(.*?)""", "");
if (localSchema)
{
var prefix = resourceType == QtiResourceType.Manifest ? "/" : "../";
baseSchemeLocation = $"{prefix}controlxsds/{Path.GetFileName(baseSchemeLocation)}";
}
var schemaLocation = $"xsi:schemaLocation=\"{baseScheme} {baseSchemeLocation} ";
qtiParentTag = qtiParentTag.Replace($"{tagName} ",
$@"{tagName} xmlns=""{baseScheme}"" xmlns:xsi=""http://www.w3.org/2001/XMLSchema-instance"" " +
schemaLocation + " " + extensionSchemas + @""" "
);
xml = xml.Replace(qtiParentOrg, qtiParentTag);
if (schemaPrefix != "xsi")
{
xml = xml.Replace($":{schemaPrefix}", ":xsi");
xml = xml.Replace($"{schemaPrefix}:", "xsi:");
}
return(xml);
}
public static string GetBaseSchemaLocation(QtiResourceType resourceType, QtiVersion version)
=> XsdHelper.BaseSchemaLocations[$"{resourceType.ToString()}-{version.ToString()}"];
private static string GetBaseSchema(QtiResourceType resourceType, QtiVersion version)
=> XsdHelper.BaseSchemas[$"{resourceType}-{version}"];
