private string FormatValue(Entity valueProvider, formatTemplate template)
{
Entity original = CheckTarget();
IEnumerable <(string, Entity)> values = GetValues();
IEnumerable <string> formattedValues = values.Select(Format).ToArray();
string formattedValue = string.Join(template.seperator, formattedValues);
return(ApplyPrefixSuffix(formattedValue, true));
Entity CheckTarget()
{
Entity result = valueProvider;
while (result.Owner != null && result.Owner.Type == EntityKeys.FormatKey)
{
result = result.Owner.Owner;
}
if (!string.IsNullOrEmpty(template.target) &&
!template.target.Equals(result.Type, StringComparison.OrdinalIgnoreCase))
{
throw new FormatTargetMismatchException(template, result.Type);
}
return(result);
}
IEnumerable <(string, Entity)> GetValues()
{
return(template.multiplicity == multiplicity.OneOrMore
? (template.Split?.Any() == true
? valueProvider.Value <string>().Split(template.Split.Select(Resolve).ToArray(), StringSplitOptions.None).Select(s => (s, (Entity)null))
: valueProvider.Select(e => (e.Value <string>(), e)))
: new[] { (valueProvider.Value <string>(), (Entity)null) });
public override Entity Resolve(Entity owner, string key, bool fallback = false)
{
if (key == EntityKeys.FormatKey)
{
return(owner.Create(key, templateRepository.FormatTemplates.Cast <object>().ToArray()));
}
if (owner.Value <Match>() != null)
{
Match match = owner.Value <Match>();
if (int.TryParse(key, out int index))
{
if (match.Groups.Count > index)
{
return(owner.Create(key, match.Groups[index].Value));
}
}
else if (owner.Value <Regex>()?.GetGroupNames()
.Contains(key, StringComparer.OrdinalIgnoreCase)
== true)
{
string realKey = owner.Value <Regex>()?.GetGroupNames()
.First(n => n.Equals(key, StringComparison.OrdinalIgnoreCase));
return(owner.Create(key, match.Groups[realKey].Value));
}
throw new ContentProviderException(key, owner);
}
if (key == EntityKeys.ValueKey)
{
return(owner.Create(key, owner.Values <FormatValueAccess>()
.OrderByDescending(a => a.Created)
.First().Value));
}
IEnumerable <formatTemplate> templates = owner.Values <formatTemplate>();
formatTemplate template = templates.FirstOrDefault(t => t.name.Equals(key, StringComparison.OrdinalIgnoreCase));
if (template != null)
{
return(owner.Create(key, new Func <string>(() => FormatValue(owner.Owner, template))));
}
throw new ContentProviderException(key, owner);
}
public FormatTargetMismatchException(formatTemplate template, string entityType) : base(string.Format(CultureInfo.InvariantCulture, ExceptionTexts.FormatTargetMismatch, template?.name, entityType, template.target))
{
}
private string FormatValue(Entity valueProvider, formatTemplate template)
{
Entity original = CheckTarget();
IEnumerable <string> values = GetValues();
IEnumerable <string> formattedValues = values.Select(Format);
string formattedValue = string.Join(template.seperator, formattedValues);
return(ApplyPrefixSuffix(formattedValue, true));
Entity CheckTarget()
{
Entity result = valueProvider;
while (result.Owner != null && result.Owner.Type == EntityKeys.FormatKey)
{
result = result.Owner.Owner;
}
if (!string.IsNullOrEmpty(template.target) &&
!template.target.Equals(result.Type, StringComparison.OrdinalIgnoreCase))
{
throw new FormatTargetMismatchException(template, result.Type);
}
return(result);
}
IEnumerable <string> GetValues()
{
return(template.multiplicity == multiplicity.OneOrMore
? (template.Split?.Any() == true
? valueProvider.Value <string>().Split(template.Split.Select(Resolve).ToArray(), StringSplitOptions.None)
: valueProvider.Select(e => e.Value <string>()))
: new[] { valueProvider.Value <string>() });
string Resolve(string split)
{
return(resolver.Resolve(split, original));
}
}
string ApplyPrefixSuffix(string mainString, bool onlyAggregated)
{
prefixSuffixFormat perValuePrefix = template.Prefix?.FirstOrDefault(p => p.onlyaggregated == onlyAggregated);
string prefix = perValuePrefix != null
? resolver.Resolve(perValuePrefix.value, valueProvider.Empty)
: string.Empty;
prefixSuffixFormat perValueSuffix = template.Suffix?.FirstOrDefault(p => p.onlyaggregated == onlyAggregated);
string suffix = perValueSuffix != null
? resolver.Resolve(perValueSuffix.value, valueProvider.Empty)
: string.Empty;
return(prefix + mainString + suffix);
}
string Format(string value)
{
string result = ApplyPatterns();
return(ApplyPrefixSuffix(result, false));
string ApplyPatterns()
{
foreach (conditionalConversionFormat format in template.ConditionalConversion ?? Enumerable.Empty <conditionalConversionFormat>())
{
if (bool.TryParse(resolver.Resolve(format.condition, original), out bool applies) &&
applies)
{
using (original.AddTemporaryDataSource(new FormatValueAccess(value)))
{
return(resolver.Resolve(format.template, original));
}
}
}
foreach (regexConversionFormat format in template.RegexConversion ?? Enumerable.Empty <regexConversionFormat>())
{
Match match = CreateMatch(format.pattern, format.ignorecase, out Regex regex);
if (match.Success)
{
return(resolver.Resolve(format.converted, valueProvider.Create("regex", match, regex)));
}
}
foreach (templateConversionFormat format in template.TemplateConversion ?? Enumerable.Empty <templateConversionFormat>())
{
Match match = CreateMatch(format.pattern, format.ignorecase, out Regex _);
if (match.Success)
{
using (original.AddTemporaryDataSource(new FormatValueAccess(value)))
{
return(resolver.Resolve(format.template, original));
}
}
}
return(value);
Match CreateMatch(string pattern, bool ignorecase, out Regex regex)
{
if (!pattern.StartsWith("^", StringComparison.Ordinal))
{
pattern = $"^{pattern}";
}
if (!pattern.EndsWith("$", StringComparison.Ordinal))
{
pattern += "$";
}
RegexOptions options = ignorecase ? RegexOptions.IgnoreCase : RegexOptions.None;
regex = new Regex(pattern, options);
return(regex.Match(value));
}
}
}
}
