public static string CollapseWhitespace(this string str)
{
if (str == null)
{
return(null);
}
var sb = StringBuilderThreadStatic.Allocate();
var lastChar = (char)0;
for (var i = 0; i < str.Length; i++)
{
var c = str[i];
if (c < 32)
{
continue; // Skip all these
}
if (c == 32)
{
if (lastChar == 32)
{
continue; // Only write one space character
}
}
sb.Append(c);
lastChar = c;
}
return(StringBuilderThreadStatic.ReturnAndFree(sb));
}
public static string HexEscape(this string text, params char[] anyCharOf)
{
if (string.IsNullOrEmpty(text))
{
return(text);
}
if (anyCharOf == null || anyCharOf.Length == 0)
{
return(text);
}
var encodeCharMap = new HashSet <char>(anyCharOf);
var sb = StringBuilderThreadStatic.Allocate();
var textLength = text.Length;
for (var i = 0; i < textLength; i++)
{
var c = text[i];
if (encodeCharMap.Contains(c))
{
sb.Append('%' + ((int)c).ToString("x"));
}
else
{
sb.Append(c);
}
}
return(StringBuilderThreadStatic.ReturnAndFree(sb));
}
public static string HexUnescape(this string text, params char[] anyCharOf)
{
if (String.IsNullOrEmpty(text))
{
return(null);
}
if (anyCharOf == null || anyCharOf.Length == 0)
{
return(text);
}
var sb = StringBuilderThreadStatic.Allocate();
var textLength = text.Length;
for (var i = 0; i < textLength; i++)
{
var c = text.Substring(i, 1);
if (c == "%")
{
var hexNo = Convert.ToInt32(text.Substring(i + 1, 2), 16);
sb.Append((char)hexNo);
i += 2;
}
else
{
sb.Append(c);
}
}
return(StringBuilderThreadStatic.ReturnAndFree(sb));
}
public static string CombinePaths(params string[] paths)
{
var sb = StringBuilderThreadStatic.Allocate();
AppendPaths(sb, paths);
return(StringBuilderThreadStatic.ReturnAndFree(sb));
}
public static string UrlEncode(this string text, bool upperCase = false)
{
if (String.IsNullOrEmpty(text))
{
return(text);
}
var sb = StringBuilderThreadStatic.Allocate();
var fmt = upperCase ? "X2" : "x2";
foreach (var charCode in Encoding.UTF8.GetBytes(text))
{
if (
charCode >= 65 && charCode <= 90 || // A-Z
charCode >= 97 && charCode <= 122 || // a-z
charCode >= 48 && charCode <= 57 || // 0-9
charCode >= 44 && charCode <= 46 // ,-.
)
{
sb.Append((char)charCode);
}
else if (charCode == 32)
{
sb.Append('+');
}
else
{
sb.Append('%' + charCode.ToString(fmt));
}
}
return(StringBuilderThreadStatic.ReturnAndFree(sb));
}
public static string ToPascalCase(this string value)
{
if (string.IsNullOrEmpty(value))
{
return(value);
}
if (value.IndexOf('_') >= 0)
{
var parts = value.Split('_');
var sb = StringBuilderThreadStatic.Allocate();
foreach (var part in parts)
{
if (string.IsNullOrEmpty(part))
{
continue;
}
var str = part.ToCamelCase();
sb.Append(char.ToUpper(str[0]) + str.SafeSubstring(1, str.Length));
}
return(StringBuilderThreadStatic.ReturnAndFree(sb));
}
var camelCase = value.ToCamelCase();
return(char.ToUpper(camelCase[0]) + camelCase.SafeSubstring(1, camelCase.Length));
}
public static Type GetCachedGenericType(this Type type, params Type[] argTypes)
{
if (!type.IsGenericTypeDefinition())
{
throw new ArgumentException(type.FullName + " is not a Generic Type Definition");
}
if (argTypes == null)
{
argTypes = TypeConstants.EmptyTypeArray;
}
StringBuilder sb = StringBuilderThreadStatic.Allocate().Append(type.FullName);
foreach (Type argType in argTypes)
{
sb.Append('|').Append(argType.FullName);
}
string key = StringBuilderThreadStatic.ReturnAndFree(sb);
Type type1;
if (PlatformExtensions.GenericTypeCache.TryGetValue(key, out type1))
{
return(type1);
}
Type type2 = type.MakeGenericType(argTypes);
Dictionary <string, Type> genericTypeCache;
Dictionary <string, Type> dictionary;
do
{
genericTypeCache = PlatformExtensions.GenericTypeCache;
dictionary = new Dictionary <string, Type>((IDictionary <string, Type>)PlatformExtensions.GenericTypeCache);
dictionary[key] = type2;
}while (Interlocked.CompareExchange <Dictionary <string, Type> >(ref PlatformExtensions.GenericTypeCache, dictionary, genericTypeCache) != genericTypeCache);
return(type2);
}
public static string ToLowercaseUnderscore(this string value)
{
if (string.IsNullOrEmpty(value))
{
return(value);
}
value = value.ToCamelCase();
var sb = StringBuilderThreadStatic.Allocate();
foreach (var t in value)
{
if (char.IsDigit(t) || char.IsLetter(t) && char.IsLower(t) || t == '_')
{
sb.Append(t);
}
else
{
sb.Append("_");
sb.Append(char.ToLowerInvariant(t));
}
}
return(StringBuilderThreadStatic.ReturnAndFree(sb));
}
public static string ToWcfJsonDateTimeOffset(DateTimeOffset dateTimeOffset)
{
var sb = StringBuilderThreadStatic.Allocate();
using (var writer = new StringWriter(sb))
{
WriteWcfJsonDateTimeOffset(writer, dateTimeOffset);
return(StringBuilderThreadStatic.ReturnAndFree(sb));
}
}
public static string CombineWith(this string path, params object[] thesePaths)
{
if (thesePaths.Length == 1 && thesePaths[0] == null)
{
return(path);
}
var sb = StringBuilderThreadStatic.Allocate();
sb.Append(path.TrimEnd('/', '\\'));
AppendPaths(sb, ToStrings(thesePaths));
return(StringBuilderThreadStatic.ReturnAndFree(sb));
}
public static string Join <T>(this IEnumerable <T> values, string seperator)
{
var sb = StringBuilderThreadStatic.Allocate();
foreach (var value in values)
{
if (sb.Length > 0)
{
sb.Append(seperator);
}
sb.Append(value);
}
return(StringBuilderThreadStatic.ReturnAndFree(sb));
}
public static string ToXsdDuration(TimeSpan timeSpan)
{
var sb = StringBuilderThreadStatic.Allocate();
sb.Append(timeSpan.Ticks < 0 ? "-P" : "P");
double ticks = Math.Abs(timeSpan.Ticks);
var totalSeconds = ticks / TimeSpan.TicksPerSecond;
var wholeSeconds = (int)totalSeconds;
var seconds = wholeSeconds;
var sec = seconds >= 60 ? seconds % 60 : seconds;
var min = (seconds = seconds / 60) >= 60 ? seconds % 60 : seconds;
var hours = (seconds = seconds / 60) >= 24 ? seconds % 24 : seconds;
var days = seconds / 24;
var remainingSecs = sec + (totalSeconds - wholeSeconds);
if (days > 0)
{
sb.Append(days + "D");
}
if (days == 0 || hours + min + sec + remainingSecs > 0)
{
sb.Append("T");
if (hours > 0)
{
sb.Append(hours + "H");
}
if (min > 0)
{
sb.Append(min + "M");
}
if (remainingSecs > 0)
{
var secFmt = $"{remainingSecs:0.0000000}";
secFmt = secFmt.TrimEnd('0').TrimEnd('.');
sb.Append(secFmt + "S");
}
else if (sb.Length == 2)
{
// PT
sb.Append("0S");
}
}
return(StringBuilderThreadStatic.ReturnAndFree(sb));
}
private static string GetTypesKey(params Type[] types)
{
var sb = StringBuilderThreadStatic.Allocate();
foreach (var type in types)
{
if (sb.Length > 0)
{
sb.Append(">");
}
sb.Append(type.FullName);
}
return(StringBuilderThreadStatic.ReturnAndFree(sb));
}
public static string Join <K, V>(this Dictionary <K, V> values, string itemSeperator, string keySeperator)
{
var sb = StringBuilderThreadStatic.Allocate();
foreach (var entry in values)
{
if (sb.Length > 0)
{
sb.Append(itemSeperator);
}
sb.Append(entry.Key).Append(keySeperator).Append(entry.Value);
}
return(StringBuilderThreadStatic.ReturnAndFree(sb));
}
public static string ToXsdDuration(TimeSpan timeSpan)
{
var sb = StringBuilderThreadStatic.Allocate();
sb.Append(timeSpan.Ticks < 0 ? "-P" : "P");
double ticks = Math.Abs(timeSpan.Ticks);
double totalSeconds = ticks / TimeSpan.TicksPerSecond;
int wholeSeconds = (int)totalSeconds;
int seconds = wholeSeconds;
int sec = (seconds >= 60 ? seconds % 60 : seconds);
int min = (seconds = (seconds / 60)) >= 60 ? seconds % 60 : seconds;
int hours = (seconds = (seconds / 60)) >= 24 ? seconds % 24 : seconds;
int days = seconds / 24;
double remainingSecs = sec + (totalSeconds - wholeSeconds);
if (days > 0)
{
sb.Append(days + "D");
}
if (days == 0 || hours + min + sec + remainingSecs > 0)
{
sb.Append("T");
if (hours > 0)
{
sb.Append(hours + "H");
}
if (min > 0)
{
sb.Append(min + "M");
}
if (remainingSecs > 0)
{
var secFmt = string.Format(CultureInfo.InvariantCulture, "{0:0.0000000}", remainingSecs);
secFmt = secFmt.TrimEnd('0').TrimEnd('.');
sb.Append(secFmt + "S");
}
else if (sb.Length == 2) //PT
{
sb.Append("0S");
}
}
return(StringBuilderThreadStatic.ReturnAndFree(sb));
}
internal static string Underscored(IEnumerable <char> pascalCase)
{
var sb = StringBuilderThreadStatic.Allocate();
var i = 0;
foreach (var c in pascalCase)
{
if (char.IsUpper(c) && i > 0)
{
sb.Append("_");
}
sb.Append(c);
i++;
}
return(StringBuilderThreadStatic.ReturnAndFree(sb).ToLowerInvariant());
}
public static string AppendUrlPathsRaw(this string uri, params string[] uriComponents)
{
var sb = StringBuilderThreadStatic.Allocate();
sb.Append(uri.WithTrailingSlash());
var i = 0;
foreach (var uriComponent in uriComponents)
{
if (i++ > 0)
{
sb.Append('/');
}
sb.Append(uriComponent);
}
return(StringBuilderThreadStatic.ReturnAndFree(sb));
}
public static Type GetCachedGenericType(this Type type, params Type[] argTypes)
{
if (!type.IsGenericTypeDefinition)
{
throw new ArgumentException(type.FullName + " is not a Generic Type Definition");
}
if (argTypes == null)
{
argTypes = TypeConstants.EmptyTypeArray;
}
var sb = StringBuilderThreadStatic.Allocate()
.Append(type.FullName);
foreach (var argType in argTypes)
{
sb.Append('|')
.Append(argType.FullName);
}
var key = StringBuilderThreadStatic.ReturnAndFree(sb);
if (GenericTypeCache.TryGetValue(key, out var genericType))
{
return(genericType);
}
genericType = type.MakeGenericType(argTypes);
Dictionary <string, Type> snapshot, newCache;
do
{
snapshot = GenericTypeCache;
newCache = new Dictionary <string, Type>(GenericTypeCache)
{
[key] = genericType
};
} while (!ReferenceEquals(
Interlocked.CompareExchange(ref GenericTypeCache, newCache, snapshot), snapshot));
return(genericType);
}
public static string CombineWith(this string path, params string[] thesePaths)
{
if (path == null)
{
path = "";
}
if (thesePaths.Length == 1 && thesePaths[0] == null)
{
return(path);
}
var startPath = path.Length > 1 ? path.TrimEnd('/', '\\') : path;
var sb = StringBuilderThreadStatic.Allocate();
sb.Append(startPath);
AppendPaths(sb, thesePaths);
return(StringBuilderThreadStatic.ReturnAndFree(sb));
}
public static string Dump(this Delegate fn)
{
var method = fn.GetType().GetMethod("Invoke");
var sb = StringBuilderThreadStatic.Allocate();
foreach (var param in method.GetParameters())
{
if (sb.Length > 0)
{
sb.Append(", ");
}
sb.AppendFormat("{0} {1}", param.ParameterType.Name, param.Name);
}
var methodName = fn.Method.Name;
var info = $"{method.ReturnType.Name} {methodName}({StringBuilderThreadStatic.ReturnAndFree(sb)})";
return(info);
}
/// <summary>
/// Converts to xsdduration.
/// </summary>
/// <param name="timeSpan">The time span.</param>
/// <returns>System.String.</returns>
public static string ToXsdDuration(TimeSpan timeSpan)
{
if (timeSpan == TimeSpan.MinValue)
{
return(MinSerializedValue);
}
if (timeSpan == TimeSpan.MaxValue)
{
return(MaxSerializedValue);
}
var sb = StringBuilderThreadStatic.Allocate();
sb.Append(timeSpan.Ticks < 0 ? "-P" : "P");
double ticks = timeSpan.Ticks;
if (ticks < 0)
{
ticks = -ticks;
}
double totalSeconds = ticks / TimeSpan.TicksPerSecond;
long wholeSeconds = (long)totalSeconds;
long seconds = wholeSeconds;
long sec = seconds >= 60 ? seconds % 60 : seconds;
long min = (seconds = seconds / 60) >= 60 ? seconds % 60 : seconds;
long hours = (seconds = seconds / 60) >= 24 ? seconds % 24 : seconds;
long days = seconds / 24;
double remainingSecs = sec + (totalSeconds - wholeSeconds);
if (days > 0)
{
sb.Append(days + "D");
}
if (days == 0 || hours + min + sec + remainingSecs > 0)
{
sb.Append("T");
if (hours > 0)
{
sb.Append(hours + "H");
}
if (min > 0)
{
sb.Append(min + "M");
}
if (remainingSecs > 0)
{
var secFmt = string.Format(CultureInfo.InvariantCulture, "{0:0.0000000}", remainingSecs);
secFmt = secFmt.TrimEnd('0').TrimEnd('.');
sb.Append(secFmt + "S");
}
else if (sb.Length == 2) //PT
{
sb.Append("0S");
}
}
return(StringBuilderThreadStatic.ReturnAndFree(sb));
}
public static string IndentJson(this string json)
{
var indent = 0;
var quoted = false;
var sb = StringBuilderThreadStatic.Allocate();
for (var i = 0; i < json.Length; i++)
{
var ch = json[i];
switch (ch)
{
case '{':
case '[':
sb.Append(ch);
if (!quoted)
{
sb.AppendLine();
times(++indent, () => sb.Append(Indent));
}
break;
case '}':
case ']':
if (!quoted)
{
sb.AppendLine();
times(--indent, () => sb.Append(Indent));
}
sb.Append(ch);
break;
case '"':
sb.Append(ch);
var escaped = false;
var index = i;
while (index > 0 && json[--index] == '\\')
{
escaped = !escaped;
}
if (!escaped)
{
quoted = !quoted;
}
break;
case ',':
sb.Append(ch);
if (!quoted)
{
sb.AppendLine();
times(indent, () => sb.Append(Indent));
}
break;
case ':':
sb.Append(ch);
if (!quoted)
{
sb.Append(" ");
}
break;
default:
sb.Append(ch);
break;
}
}
return(StringBuilderThreadStatic.ReturnAndFree(sb));
}
public static StringSegment Unescape(StringSegment input, bool removeQuotes)
{
var length = input.Length;
int start = 0;
int count = 0;
var output = StringBuilderThreadStatic.Allocate();
for (; count < length;)
{
if (removeQuotes)
{
if (input.GetChar(count) == JsonUtils.QuoteChar)
{
if (start != count)
{
output.Append(input.Buffer, input.Offset + start, count - start);
}
count++;
start = count;
continue;
}
}
if (input.GetChar(count) == JsonUtils.EscapeChar)
{
if (start != count)
{
output.Append(input.Buffer, input.Offset + start, count - start);
}
start = count;
count++;
if (count >= length)
{
continue;
}
//we will always be parsing an escaped char here
var c = input.GetChar(count);
switch (c)
{
case 'a':
output.Append('\a');
count++;
break;
case 'b':
output.Append('\b');
count++;
break;
case 'f':
output.Append('\f');
count++;
break;
case 'n':
output.Append('\n');
count++;
break;
case 'r':
output.Append('\r');
count++;
break;
case 'v':
output.Append('\v');
count++;
break;
case 't':
output.Append('\t');
count++;
break;
case 'u':
if (count + 4 < length)
{
var unicodeString = input.Substring(count + 1, 4);
var unicodeIntVal = UInt32.Parse(unicodeString, NumberStyles.HexNumber);
output.Append(ConvertFromUtf32((int)unicodeIntVal));
count += 5;
}
else
{
output.Append(c);
}
break;
case 'x':
if (count + 4 < length)
{
var unicodeString = input.Substring(count + 1, 4);
var unicodeIntVal = uint.Parse(unicodeString, NumberStyles.HexNumber);
output.Append(ConvertFromUtf32((int)unicodeIntVal));
count += 5;
}
else
if (count + 2 < length)
{
var unicodeString = input.Substring(count + 1, 2);
var unicodeIntVal = uint.Parse(unicodeString, NumberStyles.HexNumber);
output.Append(ConvertFromUtf32((int)unicodeIntVal));
count += 3;
}
else
{
output.Append(input.Buffer, input.Offset + start, count - start);
}
break;
default:
output.Append(c);
count++;
break;
}
start = count;
}
else
{
count++;
}
}
output.Append(input.Buffer, input.Offset + start, length - start);
return(new StringSegment(StringBuilderThreadStatic.ReturnAndFree(output)));
}
/// <summary>
/// Formats the specified serialized text.
/// </summary>
/// <param name="serializedText">The serialized text.</param>
/// <returns>System.String.</returns>
public static string Format(string serializedText)
{
if (string.IsNullOrEmpty(serializedText))
{
return(null);
}
var tabCount = 0;
var sb = StringBuilderThreadStatic.Allocate();
var firstKeySeparator = true;
var inString = false;
for (var i = 0; i < serializedText.Length; i++)
{
var current = serializedText[i];
var previous = i - 1 >= 0 ? serializedText[i - 1] : 0;
var next = i < serializedText.Length - 1 ? serializedText[i + 1] : 0;
switch (current)
{
case JsWriter.MapStartChar:
case JsWriter.ListStartChar:
{
if (previous == JsWriter.MapKeySeperator)
{
if (next == JsWriter.MapEndChar || next == JsWriter.ListEndChar)
{
sb.Append(current);
sb.Append(serializedText[++i]); //eat next
continue;
}
AppendTabLine(sb, tabCount);
}
sb.Append(current);
AppendTabLine(sb, ++tabCount);
firstKeySeparator = true;
continue;
}
case JsWriter.MapEndChar:
case JsWriter.ListEndChar:
AppendTabLine(sb, --tabCount);
sb.Append(current);
firstKeySeparator = true;
continue;
case JsWriter.QuoteChar:
sb.Append(current);
inString = !inString;
continue;
case JsWriter.ItemSeperator when !inString:
sb.Append(current);
AppendTabLine(sb, tabCount);
firstKeySeparator = true;
continue;
}
sb.Append(current);
if (current == JsWriter.MapKeySeperator && firstKeySeparator)
{
sb.Append(" ");
firstKeySeparator = false;
}
}
return(StringBuilderThreadStatic.ReturnAndFree(sb));
}
public static ReadOnlySpan <char> Unescape(ReadOnlySpan <char> input, bool removeQuotes, char quoteChar)
{
var length = input.Length;
int start = 0;
int count = 0;
var output = StringBuilderThreadStatic.Allocate();
for (; count < length;)
{
var c = input[count];
if (removeQuotes)
{
if (c == quoteChar)
{
if (start != count)
{
output.Append(input.Slice(start, count - start));
}
count++;
start = count;
continue;
}
}
if (c == JsonUtils.EscapeChar)
{
if (start != count)
{
output.Append(input.Slice(start, count - start));
}
start = count;
count++;
if (count >= length)
{
continue;
}
//we will always be parsing an escaped char here
c = input[count];
switch (c)
{
case 'a':
output.Append('\a');
count++;
break;
case 'b':
output.Append('\b');
count++;
break;
case 'f':
output.Append('\f');
count++;
break;
case 'n':
output.Append('\n');
count++;
break;
case 'r':
output.Append('\r');
count++;
break;
case 'v':
output.Append('\v');
count++;
break;
case 't':
output.Append('\t');
count++;
break;
case 'u':
if (count + 4 < length)
{
var unicodeString = input.Slice(count + 1, 4);
var unicodeIntVal = MemoryProvider.Instance.ParseUInt32(unicodeString, NumberStyles.HexNumber);
output.Append(ConvertFromUtf32((int)unicodeIntVal));
count += 5;
}
else
{
output.Append(c);
}
break;
case 'x':
if (count + 4 < length)
{
var unicodeString = input.Slice(count + 1, 4);
var unicodeIntVal = MemoryProvider.Instance.ParseUInt32(unicodeString, NumberStyles.HexNumber);
output.Append(ConvertFromUtf32((int)unicodeIntVal));
count += 5;
}
else
if (count + 2 < length)
{
var unicodeString = input.Slice(count + 1, 2);
var unicodeIntVal = MemoryProvider.Instance.ParseUInt32(unicodeString, NumberStyles.HexNumber);
output.Append(ConvertFromUtf32((int)unicodeIntVal));
count += 3;
}
else
{
output.Append(input.Slice(start, count - start));
}
break;
default:
output.Append(c);
count++;
break;
}
start = count;
}
else
{
count++;
}
}
output.Append(input.Slice(start, length - start));
return(StringBuilderThreadStatic.ReturnAndFree(output).AsSpan());
}
