public static string ToWrappedString <T>(this IEnumerable <T> source, string sep, int wrap)
{
source = source.Ensure();
if (sep == null)
{
sep = String.Empty;
}
if (wrap <= 0)
{
return(String.Join(sep, source));
}
var strings = ListPool <string> .AcquireObject();
var values = ObjectPool <StringBuilder> .AcquireObject();
try
{
strings.AddRange(source.Select(o => Convert.ToString(o)));
if (strings.Count == 0)
{
return(String.Empty);
}
var capacity = strings.Sum(s => s.Length + sep.Length) + (strings.Count / wrap);
values.EnsureCapacity(capacity);
var i = 0;
foreach (var t in strings)
{
values.Append(t);
if (++i < strings.Count)
{
values.Append(sep);
if (i % wrap == 0)
{
values.Append('\n');
}
}
}
return(values.ToString());
}
catch
{
return(String.Empty);
}
finally
{
ObjectPool.Free(ref strings);
ObjectPool.Free(ref values);
}
}
public static string InvertCase(this string str)
{
if (String.IsNullOrWhiteSpace(str))
{
return(str ?? String.Empty);
}
var value = ObjectPool <StringBuilder> .AcquireObject();
foreach (var c in str)
{
if (Char.IsLetter(c))
{
value.Append(Char.IsLower(c) ? Char.ToUpper(c) : Char.IsUpper(c) ? Char.ToLower(c) : c);
}
else
{
value.Append(c);
}
}
var s = value.ToString();
ObjectPool.Free(ref value);
return(s);
}
public static string ToUpperWords(this string str, bool strict)
{
if (String.IsNullOrWhiteSpace(str))
{
return(str ?? String.Empty);
}
char c = str[0], lc;
var value = ObjectPool <StringBuilder> .AcquireObject();
if (Char.IsLetter(c) && Char.IsLower(c))
{
c = Char.ToUpper(c);
}
value.Append(c);
for (var i = 1; i < str.Length; i++)
{
c = str[i];
lc = str[i - 1];
if (Char.IsLetter(c) && Char.IsLower(c))
{
if (Char.IsWhiteSpace(lc) || lc == '>')
{
c = Char.ToUpper(c);
}
else if (!strict && !Char.IsDigit(lc) && !Char.IsSymbol(lc) && lc != '\'' && lc != '<')
{
if (Char.IsSeparator(lc) || Char.IsPunctuation(lc))
{
c = Char.ToUpper(c);
}
}
}
value.Append(c);
}
var s = value.ToString();
ObjectPool.Free(ref value);
return(s);
}
public static string ToSimpleString(this TimeZoneInfo tzo, bool dst)
{
var build = ObjectPool <StringBuilder> .AcquireObject();
if (tzo.Id == "UTC")
{
return(tzo.Id);
}
string value;
if (dst)
{
value = tzo.DaylightName.Replace("Daylight Time", String.Empty);
}
else
{
value = tzo.StandardName.Replace("Standard Time", String.Empty);
}
foreach (var c in value)
{
if (!Char.IsWhiteSpace(c) && Char.IsLetter(c) && Char.IsUpper(c))
{
build.Append(c);
}
}
build.Append(dst ? "-DT" : "-ST");
value = build.ToString();
ObjectPool.Free(ref build);
return(value);
}
public static string ToSimpleString(this TimeSpan time, string format = "h-m-s")
{
var build = ObjectPool <StringBuilder> .AcquireObject();
build.EnsureCapacity(format.Length * 2);
var noformat = false;
var nopadding = false;
var zeroValue = false;
var zeroEmpty = 0;
string fFormat, dFormat;
object append;
for (var i = 0; i < format.Length; i++)
{
if (format[i] == '#')
{
noformat = !noformat;
continue;
}
if (noformat)
{
build.Append(format[i]);
continue;
}
switch (format[i])
{
case '!':
nopadding = !nopadding;
continue;
}
fFormat = zeroEmpty > 0 ? (nopadding ? "{0:#.#}" : "{0:#.##}") : (nopadding ? "{0:0.#}" : "{0:0.##}");
dFormat = zeroEmpty > 0 ? (nopadding ? "{0:#}" : "{0:##}") : (nopadding ? "{0:0}" : "{0:00}");
append = null;
switch (format[i])
{
case '<':
++zeroEmpty;
break;
case '>':
{
if (zeroEmpty == 0 || (zeroEmpty > 0 && --zeroEmpty == 0))
{
zeroValue = false;
}
}
break;
case '\\':
{
if (i + 1 < format.Length)
{
append = format[++i];
}
}
break;
case 'x':
append = ToSimpleString(TimeZoneInfo.Utc, false);
break;
case 'X':
append = ToSimpleString(TimeZoneInfo.Utc, DateTime.UtcNow.IsDaylightSavingTime());
break;
case 'z':
append = ToSimpleString(TimeZoneInfo.Local, false);
break;
case 'Z':
append = ToSimpleString(TimeZoneInfo.Local, DateTime.Now.IsDaylightSavingTime());
break;
case 'D':
{
append = String.Format(fFormat, time.TotalDays);
zeroValue = String.IsNullOrWhiteSpace((string)append);
}
break;
case 'H':
{
append = String.Format(fFormat, time.TotalHours);
zeroValue = String.IsNullOrWhiteSpace((string)append);
}
break;
case 'M':
{
append = String.Format(fFormat, time.TotalMinutes);
zeroValue = String.IsNullOrWhiteSpace((string)append);
}
break;
case 'S':
{
append = String.Format(fFormat, time.TotalSeconds);
zeroValue = String.IsNullOrWhiteSpace((string)append);
}
break;
case 'd':
{
append = String.Format(dFormat, time.Days);
zeroValue = String.IsNullOrWhiteSpace((string)append);
}
break;
case 'h':
{
append = String.Format(dFormat, time.Hours);
zeroValue = String.IsNullOrWhiteSpace((string)append);
}
break;
case 'm':
{
append = String.Format(dFormat, time.Minutes);
zeroValue = String.IsNullOrWhiteSpace((string)append);
}
break;
case 's':
{
append = String.Format(dFormat, time.Seconds);
zeroValue = String.IsNullOrWhiteSpace((string)append);
}
break;
default:
append = format[i];
break;
}
if (append != null && (!zeroValue || zeroEmpty <= 0))
{
build.Append(append);
}
}
var value = build.ToString();
ObjectPool.Free(ref build);
return(value);
}
public static string ToSimpleString(this DateTime date, string format = "t D d M y")
{
var build = ObjectPool <StringBuilder> .AcquireObject();
build.EnsureCapacity(format.Length * 2);
var noformat = false;
for (var i = 0; i < format.Length; i++)
{
if (format[i] == '#')
{
noformat = !noformat;
continue;
}
if (noformat)
{
build.Append(format[i]);
continue;
}
switch (format[i])
{
case '\\':
build.Append((i + 1 < format.Length) ? Convert.ToString(format[++i]) : String.Empty);
break;
case 'x':
case 'z':
{
var utc = date.Kind == DateTimeKind.Utc;
var tzo = utc ? TimeZoneInfo.Utc : TimeZoneInfo.Local;
build.Append(ToSimpleString(tzo, false));
}
break;
case 'X':
case 'Z':
{
var utc = date.Kind == DateTimeKind.Utc;
var tzo = utc ? TimeZoneInfo.Utc : TimeZoneInfo.Local;
build.Append(ToSimpleString(tzo, date.IsDaylightSavingTime()));
}
break;
case 'D':
build.Append(date.DayOfWeek);
break;
case 'd':
build.Append(date.Day);
break;
case 'M':
build.Append(GetMonth(date));
break;
case 'm':
build.Append(date.Month);
break;
case 'y':
build.Append(date.Year);
break;
case 't':
{
var tf = String.Empty;
if (i + 1 < format.Length)
{
if (format[i + 1] == '@')
{
++i;
while (++i < format.Length && format[i] != '@')
{
tf += format[i];
}
}
}
build.Append(ToSimpleString(date.TimeOfDay, !String.IsNullOrWhiteSpace(tf) ? tf : "h-m-s"));
}
break;
default:
build.Append(format[i]);
break;
}
}
var value = build.ToString();
ObjectPool.Free(ref build);
return(value);
}
