public static unsafe string Repeat(this string s, int count)
{
if (s == null)
{
Throw.ArgumentNullException(Argument.s);
}
if (count < 0)
{
Throw.ArgumentOutOfRangeException(Argument.count);
}
if (s.Length == 0 || count == 1)
{
return(s);
}
if (count == 0)
{
return(String.Empty);
}
string result = new String('\0', count * s.Length);
fixed(char *pResult = result)
{
var sb = new MutableStringBuilder(pResult, result.Length);
for (int i = 0; i < count; i++)
{
sb.Append(s);
}
}
return(result);
}
public static unsafe string ToHexValuesString(this byte[] bytes, string separator = null)
{
if (bytes == null)
{
Throw.ArgumentNullException(Argument.bytes);
}
bool useSeparator = !String.IsNullOrEmpty(separator);
if (useSeparator)
{
// ReSharper disable once ForCanBeConvertedToForeach - it used to be an Any call but has been refactored due to performance
for (int i = 0; i < separator.Length; i++)
{
char c = separator[i];
if (c >= '0' && c <= '9' || c >= 'A' && c <= 'F' || c >= 'a' && c <= 'f')
{
Throw.ArgumentException(Argument.separator, Res.ByteArrayExtensionsSeparatorInvalidHex);
}
}
}
int bytesLength = bytes.Length;
if (bytesLength == 0)
{
return(String.Empty);
}
int len = (bytesLength << 1) + (useSeparator ? (bytesLength - 1) * separator.Length : 0);
string result = new String('\0', len);
fixed(char *pResult = result)
{
var sb = new MutableStringBuilder(pResult, len);
// ReSharper disable once ForCanBeConvertedToForeach - performance
for (int i = 0; i < bytes.Length; i++)
{
if (useSeparator && sb.Length != 0)
{
sb.Append(separator);
}
sb.AppendHex(bytes[i]);
}
}
return(result);
}
public static unsafe string ToDecimalValuesString(this byte[] bytes, string separator = ", ")
{
if (bytes == null)
{
Throw.ArgumentNullException(Argument.bytes);
}
if (separator == null)
{
Throw.ArgumentNullException(Argument.separator);
}
if (separator.Length == 0 || separator.Any(c => c >= '0' && c <= '9'))
{
Throw.ArgumentException(Argument.separator, Res.ByteArrayExtensionsSeparatorInvalidDec);
}
var buf = new ArraySection <char>(bytes.Length * (3 + separator.Length), false);
try
{
fixed(char *pBuf = buf)
{
var result = new MutableStringBuilder(pBuf, buf.Length);
// ReSharper disable once ForCanBeConvertedToForeach - intended, performance
for (int i = 0; i < bytes.Length; i++)
{
if (result.Length != 0)
{
result.Append(separator);
}
result.Append(bytes[i]);
}
return(result.ToString());
}
}
finally
{
buf.Release();
}
}
private static unsafe string Split(string text, int lineLength, int indentSize, char indentChar, bool indentSingleLine)
{
// single line
if (lineLength <= 0 || text.Length <= lineLength)
{
if (!indentSingleLine || indentSize <= 0)
{
return(text);
}
return(text.PadLeft(text.Length + indentSize, indentChar));
}
int lineCount = (int)Math.Ceiling((double)text.Length / lineLength);
int len = text.Length + lineCount * indentSize + (lineCount - 1) * Environment.NewLine.Length;
var result = new String('\0', len);
fixed(char *pResult = result)
{
var sb = new MutableStringBuilder(pResult, len);
int pos;
for (pos = 0; pos < text.Length - lineLength; pos += lineLength)
{
sb.Append(indentChar, indentSize);
sb.Append(text, pos, lineLength);
sb.AppendLine();
}
sb.Append(indentChar, indentSize);
sb.Append(text, pos, text.Length - pos);
Debug.Assert(sb.Length == sb.Capacity, "Wrong length initialization");
}
return(result);
}
public static unsafe string GetRelativePath(string target, string baseDirectory, bool isCaseSensitive)
{
if (target == null)
{
Throw.ArgumentNullException(Argument.target);
}
if (target.Length == 0)
{
Throw.ArgumentException(Argument.target, Res.ArgumentEmpty);
}
if (baseDirectory == null)
{
Throw.ArgumentNullException(Argument.baseDirectory);
}
if (baseDirectory.Length == 0)
{
Throw.ArgumentException(Argument.baseDirectory, Res.ArgumentEmpty);
}
target = Path.GetFullPath(target);
baseDirectory = Path.GetFullPath(baseDirectory);
var srcDir = new StringSegmentInternal(baseDirectory);
srcDir.TrimEnd(Path.DirectorySeparatorChar);
List <StringSegmentInternal> basePathParts = srcDir.Split(Path.DirectorySeparatorChar);
var dstDir = new StringSegmentInternal(target);
dstDir.TrimEnd(Path.DirectorySeparatorChar);
List <StringSegmentInternal> targetPathParts = dstDir.Split(Path.DirectorySeparatorChar);
int commonPathDepth = 0;
int len = Math.Min(basePathParts.Count, targetPathParts.Count);
if (isCaseSensitive)
{
for (int i = 0; i < len; i++)
{
if (!basePathParts[i].Equals(targetPathParts[i]))
{
break;
}
commonPathDepth += 1;
}
}
else
{
for (int i = 0; i < len; i++)
{
if (!basePathParts[i].EqualsOrdinalIgnoreCase(targetPathParts[i]))
{
break;
}
commonPathDepth += 1;
}
}
// no common parts
if (commonPathDepth == 0)
{
return(target);
}
int baseOnlyCount = basePathParts.Count - commonPathDepth;
int targetPathCount = targetPathParts.Count;
len = baseOnlyCount > 0 ? baseOnlyCount * 2 + (baseOnlyCount - 1) : 0; // .. and path separators
for (int i = commonPathDepth; i < targetPathCount; i++)
{
if (len > 0)
{
len += 1;
}
len += targetPathParts[i].Length;
}
string result = new String('\0', len);
fixed(char *pResult = result)
{
var sb = new MutableStringBuilder(pResult, len);
for (int i = 0; i < baseOnlyCount; i++)
{
if (i > 0)
{
sb.Append(Path.DirectorySeparatorChar);
}
sb.Append("..");
}
for (int i = commonPathDepth; i < targetPathCount; i++)
{
if (sb.Length > 0)
{
sb.Append(Path.DirectorySeparatorChar);
}
sb.Append(targetPathParts[i]);
}
}
if (result.Length == 0)
{
return(".");
}
return(result);
}
