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Merge pull request shadowsocks#438 from Licshee/using-StringEx
Using StringEx
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,5 +1,5 @@ | ||
| <?xml version="1.0" encoding="utf-8"?> | ||
| <Weavers> | ||
| <Costura /> | ||
| <Caseless StringComparison="Ordinal" /> | ||
| <Caseless StringComparison="Ordinal"/> | ||
| <Costura/> | ||
| </Weavers> |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,237 @@ | ||
| using System; | ||
| using System.Collections.Generic; | ||
| using System.Globalization; | ||
| using System.IO; | ||
| using System.Linq; | ||
| using System.Text; | ||
|
|
||
| static partial class StringEx | ||
| { | ||
| #pragma warning disable 1591 | ||
|
|
||
| public static StringComparison GlobalDefaultComparison { get; set; } = StringComparison.Ordinal; | ||
|
|
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| [ThreadStatic] | ||
| private static StringComparison? _DefaultComparison; | ||
| public static StringComparison DefaultComparison | ||
| { | ||
| get { return _DefaultComparison ?? GlobalDefaultComparison; } | ||
| set { _DefaultComparison = value; } | ||
| } | ||
|
|
||
| #region basic String methods | ||
|
|
||
| public static bool IsNullOrEmpty(this string value) | ||
| => string.IsNullOrEmpty(value); | ||
|
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| public static bool IsNullOrWhiteSpace(this string value) | ||
| => string.IsNullOrWhiteSpace(value); | ||
|
|
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| public static bool IsWhiteSpace(this string value) | ||
| { | ||
| foreach(var c in value) | ||
| { | ||
| if (char.IsWhiteSpace(c)) continue; | ||
|
|
||
| return false; | ||
| } | ||
| return true; | ||
| } | ||
|
|
||
| #if !PCL | ||
| public static string IsInterned(this string value) | ||
| { | ||
| if (value == null) | ||
| throw new ArgumentNullException(nameof(value)); | ||
|
|
||
| return string.IsInterned(value); | ||
| } | ||
|
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| public static string Intern(this string value) | ||
| { | ||
| if (value == null) | ||
| throw new ArgumentNullException(nameof(value)); | ||
|
|
||
| return string.Intern(value); | ||
| } | ||
| #endif | ||
|
|
||
| #endregion | ||
|
|
||
| #region comparing | ||
|
|
||
| #region Is | ||
|
|
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| public static bool Is(this string a, string b) | ||
| => string.Equals(a, b, DefaultComparison); | ||
| public static bool Is(this string a, string b, StringComparison comparisonType) | ||
| => string.Equals(a, b, comparisonType); | ||
|
|
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| #endregion | ||
|
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| #region BeginWith | ||
|
|
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| public static bool BeginWith(this string s, char c) | ||
| { | ||
| if (s.IsNullOrEmpty()) return false; | ||
| return s[0] == c; | ||
| } | ||
| public static bool BeginWithAny(this string s, IEnumerable<char> chars) | ||
| { | ||
| if (s.IsNullOrEmpty()) return false; | ||
| return chars.Contains(s[0]); | ||
| } | ||
| public static bool BeginWithAny(this string s, params char[] chars) | ||
| => s.BeginWithAny(chars.AsEnumerable()); | ||
|
|
||
| public static bool BeginWith(this string a, string b) | ||
| { | ||
| if (a == null || b == null) return false; | ||
|
|
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| return a.StartsWith(b, DefaultComparison); | ||
| } | ||
| public static bool BeginWith(this string a, string b, StringComparison comparisonType) | ||
| { | ||
| if (a == null || b == null) return false; | ||
|
|
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| return a.StartsWith(b, comparisonType); | ||
| } | ||
| #if !PCL | ||
| public static bool BeginWith(this string a, string b, bool ignoreCase, CultureInfo culture) | ||
| { | ||
| if (a == null || b == null) return false; | ||
|
|
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| return a.StartsWith(b, ignoreCase, culture); | ||
| } | ||
| #endif | ||
|
|
||
| #endregion | ||
|
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| #region FinishWith | ||
|
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| public static bool FinishWith(this string s, char c) | ||
| { | ||
| if (s.IsNullOrEmpty()) return false; | ||
| return s.Last() == c; | ||
| } | ||
| public static bool FinishWithAny(this string s, IEnumerable<char> chars) | ||
| { | ||
| if (s.IsNullOrEmpty()) return false; | ||
| return chars.Contains(s.Last()); | ||
| } | ||
| public static bool FinishWithAny(this string s, params char[] chars) | ||
| => s.FinishWithAny(chars.AsEnumerable()); | ||
|
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| public static bool FinishWith(this string a, string b) | ||
| { | ||
| if (a == null || b == null) return false; | ||
|
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| return a.EndsWith(b, DefaultComparison); | ||
| } | ||
| public static bool FinishWith(this string a, string b, StringComparison comparisonType) | ||
| { | ||
| if (a == null || b == null) return false; | ||
|
|
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| return a.EndsWith(b, comparisonType); | ||
| } | ||
| #if !PCL | ||
| public static bool FinishWith(this string a, string b, bool ignoreCase, CultureInfo culture) | ||
| { | ||
| if (a == null || b == null) return false; | ||
|
|
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| return a.EndsWith(b, ignoreCase, culture); | ||
| } | ||
| #endif | ||
|
|
||
| #endregion | ||
|
|
||
| #endregion | ||
|
|
||
| #region ToLines | ||
|
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||
| public static IEnumerable<string> ToLines(this TextReader reader) | ||
| { | ||
| string line; | ||
| while ((line = reader.ReadLine()) != null) | ||
| yield return line; | ||
| } | ||
| public static IEnumerable<string> NonEmptyLines(this TextReader reader) | ||
| { | ||
| string line; | ||
| while ((line = reader.ReadLine()) != null) | ||
| { | ||
| if (line == "") continue; | ||
| yield return line; | ||
| } | ||
| } | ||
| public static IEnumerable<string> NonWhiteSpaceLines(this TextReader reader) | ||
| { | ||
| string line; | ||
| while ((line = reader.ReadLine()) != null) | ||
| { | ||
| if (line.IsWhiteSpace()) continue; | ||
| yield return line; | ||
| } | ||
| } | ||
|
|
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| #endregion | ||
|
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| #region others | ||
|
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| private static readonly char[][] Quotes = new[] | ||
| { | ||
| "\"\"", | ||
| "''", | ||
| "“”", | ||
| "‘’", | ||
| "『』", | ||
| "「」", | ||
| "〖〗", | ||
| "【】", | ||
| }.Select(s => s.ToCharArray()).ToArray(); | ||
| public static string Enquote(this string value) | ||
| { | ||
| if (value == null) | ||
| return "(null)"; | ||
|
|
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| foreach (var pair in Quotes) | ||
| { | ||
| if (value.IndexOfAny(pair) < 0) | ||
| return pair[0] + value + pair[1]; | ||
| } | ||
|
|
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| return '"' + value.Replace("\\", @"\\").Replace("\"", @"\""") + '"'; | ||
| } | ||
|
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| public static string Replace(this string value, string find, string rep, StringComparison comparsionType) | ||
| { | ||
| if (find.IsNullOrEmpty()) | ||
| throw new ArgumentException(null, nameof(find)); | ||
| if (rep == null) | ||
| rep = ""; | ||
| if (value.IsNullOrEmpty()) | ||
| return value; | ||
|
|
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| var sb = new StringBuilder(value.Length); | ||
|
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| var last = 0; | ||
| var len = find.Length; | ||
| var idx = value.IndexOf(find, DefaultComparison); | ||
| while (idx != -1) | ||
| { | ||
| sb.Append(value.Substring(last, idx - last)); | ||
| sb.Append(rep); | ||
| idx += len; | ||
|
|
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| last = idx; | ||
| idx = value.IndexOf(find, idx, comparsionType); | ||
| } | ||
| sb.Append(value.Substring(last)); | ||
|
|
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| return sb.ToString(); | ||
| } | ||
| public static string ReplaceEx(this string value, string find, string rep) | ||
| => value.Replace(find, rep, DefaultComparison); | ||
|
|
||
| #endregion | ||
| } |
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