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@ -2,7 +2,6 @@ |
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using System; |
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using System; |
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using System.Collections; |
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using System.Collections; |
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using System.Collections.Generic; |
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using System.Collections.Generic; |
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using System.Runtime.InteropServices; |
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using System.Text; |
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using System.Text; |
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using System.Text.RegularExpressions; |
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using System.Text.RegularExpressions; |
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@ -13,17 +12,27 @@ namespace Apewer |
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public static class TextUtility |
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public static class TextUtility |
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{ |
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{ |
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const string LetterChars = LowerCase + UpperCase; |
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const string BlankChars = " \n\r\t\f\b\a"; // 在 IsBlank 和 Trim 中视为空白的字符。
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const string BlankChars = " \n\r\t\f\b\a"; // 在 IsBlank 和 Trim 中视为空白的字符。
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const string LineFeed = "\r\n"; // 换行符,由 ASCII 13 和 ASCII 10 组成。
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const string LineFeed = "\r\n"; // 换行符,由 ASCII 13 和 ASCII 10 组成。
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const string SpaceDbc = " "; |
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const string SpaceSbc = " "; |
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/// <summary>半角空格。</summary>
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const string LucidChars = "3456789acefhknpstwxyz"; |
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public const string Space = " "; |
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const string KeyChars = "0123456789abcdefghijklmnopqrstuvwxyz"; |
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const string HexChars = "0123456789abcdef"; |
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/// <summary>全角空格。</summary>
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const string NumericChars = "0123456789"; |
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public const string SpaceSbc = " "; |
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const string LowerChars = "abcdefghijklmnopqrstuvwxyz"; |
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const string UpperChars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"; |
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/// <summary>十进制字符。</summary>
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const string LetterChars = LowerChars + UpperChars; |
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public const string Decimal = "0123456789"; |
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/// <summary>十六进制字符。</summary>
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public const string Hexadecimal = "0123456789abcdef"; |
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/// <summary>小写字母。</summary>
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public const string LowerCase = "abcdefghijklmnopqrstuvwxyz"; |
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/// <summary>大写字母。</summary>
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public const string UpperCase = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"; |
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/// <summary>UTF-8 BOM。</summary>
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/// <summary>UTF-8 BOM。</summary>
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public static byte[] Bom { get => new byte[] { 0xEF, 0xBB, 0xBF }; } |
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public static byte[] Bom { get => new byte[] { 0xEF, 0xBB, 0xBF }; } |
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@ -31,8 +40,11 @@ namespace Apewer |
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/// <summary>CRLF。</summary>
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/// <summary>CRLF。</summary>
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public const string CRLF = "\r\n"; |
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public const string CRLF = "\r\n"; |
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/// <summary>CR。</summary>
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public const char CR = '\r'; |
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/// <summary>LF。</summary>
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/// <summary>LF。</summary>
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public const string LF = "\n"; |
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public const char LF = '\n'; |
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/// <summary>长度为 0 的空字符串。</summary>
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/// <summary>长度为 0 的空字符串。</summary>
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public const string Empty = ""; |
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public const string Empty = ""; |
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@ -220,9 +232,6 @@ namespace Apewer |
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return new string(output); |
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return new string(output); |
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} |
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} |
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/// <summary>获取指定长的的空格。</summary>
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public static string Space(int length) => Duplicate(' ', length); |
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/// <summary>将文本以转换为字节数组。默认 Encoding 为 UTF-8。</summary>
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/// <summary>将文本以转换为字节数组。默认 Encoding 为 UTF-8。</summary>
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public static byte[] Bytes(string text, Encoding encoding = null) |
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public static byte[] Bytes(string text, Encoding encoding = null) |
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{ |
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{ |
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@ -650,70 +659,107 @@ namespace Apewer |
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public static string Random(int length, string pool = "0123456789abcdefghijklmnopqrstuvwxyz") |
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public static string Random(int length, string pool = "0123456789abcdefghijklmnopqrstuvwxyz") |
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{ |
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{ |
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if (length < 1) return Empty; |
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if (length < 1) return Empty; |
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if (IsEmpty(pool)) return Duplicate(SpaceDbc, length); |
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if (IsEmpty(pool)) return Duplicate(Space, length); |
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var array = new char[length]; |
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var array = new char[length]; |
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var max = pool.Length - 1; |
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var max = pool.Length - 1; |
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for (var i = 0; i < length; i++) array[i] = pool[NumberUtility.Random(0, max)]; |
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for (var i = 0; i < length; i++) array[i] = pool[NumberUtility.Random(0, max)]; |
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return new string(array); |
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return new string(array); |
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} |
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} |
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/// <summary>对字符串列表去重。指定 valid 参数时将去除无效字符串。</summary>
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/// <summary>对字符串集合去重,同时去除 NULL 值和空字符串。</summary>
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/// <param name="strings"></param>
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public static string[] Distinct(this IEnumerable<string> strings) => Distinct(strings, false, false); |
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/// <param name="valid"></param>
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public static string[] Distinct(IEnumerable<string> strings, bool valid = false) |
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/// <summary>对字符串集合去重。</summary>
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/// <param name="strings">字符串集合。</param>
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/// <param name="withEmpty">保留空字符串。</param>
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/// <param name="withNull">保留 NULL 值。</param>
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public static string[] Distinct(this IEnumerable<string> strings, bool withEmpty, bool withNull) |
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{ |
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{ |
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if (strings == null) return new string[0]; |
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if (strings == null) return new string[0]; |
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const string space = " "; |
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// 保留 NULL 和空字符串
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var hasNull = false; |
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var @null = false; |
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var hasEmpty = false; |
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var empty = false; |
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var hasSpace = false; |
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var array = new ArrayBuilder<string>(); |
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// 遍历,重组
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foreach (var s in strings) |
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var cache = new List<string>(); |
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if (strings is IList<string> list) |
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{ |
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{ |
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if (s == null) |
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var count = list.Count; |
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{ |
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cache.Capacity = count; |
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if (valid) continue; |
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for (var i = 0; i < count; i++) |
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if (hasNull) continue; |
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hasNull = true; |
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array.Add(s); |
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continue; |
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} |
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if (s == Empty) |
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{ |
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{ |
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if (valid) continue; |
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var item = list[i]; |
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if (hasEmpty) continue; |
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hasEmpty = true; |
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if (item == null) |
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array.Add(s); |
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{ |
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continue; |
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if (withNull && !@null) |
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{ |
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cache.Add(item); |
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@null = true; |
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} |
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continue; |
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} |
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if (item == Empty) |
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{ |
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if (withEmpty && !empty) |
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{ |
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cache.Add(item); |
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empty = true; |
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} |
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continue; |
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} |
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var added = false; |
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for (var j = 0; j < cache.Count; j++) |
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{ |
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if (cache[j] == item) |
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{ |
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added = true; |
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break; |
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} |
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} |
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if (!added) cache.Add(item); |
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} |
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} |
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if (s == space) |
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} |
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else |
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{ |
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foreach (var item in strings) |
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{ |
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{ |
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if (valid) continue; |
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if (item == null) |
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if (hasSpace) continue; |
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{ |
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hasSpace = true; |
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if (withNull && !@null) |
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array.Add(s); |
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{ |
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continue; |
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cache.Add(item); |
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} |
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@null = true; |
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} |
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continue; |
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} |
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if (item == Empty) |
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{ |
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if (withEmpty && !empty) |
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{ |
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cache.Add(item); |
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empty = true; |
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} |
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continue; |
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} |
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var exist = false; |
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var added = false; |
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for (var i = 0; i < array.Length; i++) |
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for (var j = 0; j < cache.Count; j++) |
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{ |
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if (array[i] == s) |
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{ |
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{ |
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exist = true; |
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if (cache[j] == item) |
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break; |
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{ |
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added = true; |
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break; |
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} |
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} |
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} |
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if (!added) cache.Add(item); |
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} |
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} |
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if (exist) continue; |
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array.Add(s); |
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} |
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} |
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return array.Export(); |
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return cache.ToArray(); |
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} |
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} |
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/// <summary>约束字符串中的字符,只包含指定的字符。</summary>
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/// <summary>约束字符串中的字符,只包含指定的字符。</summary>
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public static string Restrict(string text, char[] chars) |
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public static string Restrict(string text, char[] chars) |
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{ |
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{ |
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@ -748,7 +794,7 @@ namespace Apewer |
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public static string RestrictLetters(string text) => Restrict(text, LetterChars.ToCharArray()); |
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public static string RestrictLetters(string text) => Restrict(text, LetterChars.ToCharArray()); |
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/// <summary>约束字符串中的字符,只包含数字。</summary>
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/// <summary>约束字符串中的字符,只包含数字。</summary>
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public static string RestrictNumeric(string text) => Restrict(text, NumericChars.ToCharArray()); |
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public static string RestrictNumeric(string text) => Restrict(text, Decimal.ToCharArray()); |
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/// <summary>返回此字符串的安全键副本,只保留数据记录主键中可能出现的字符,默认限制长度为 255 字符。</summary>
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/// <summary>返回此字符串的安全键副本,只保留数据记录主键中可能出现的字符,默认限制长度为 255 字符。</summary>
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public static string SafeKey(string text, int maxLength = 255) |
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public static string SafeKey(string text, int maxLength = 255) |
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