新增字符串扩展方法SubstringEx和Split方法。
This commit is contained in:
parent
2488b15532
commit
4fb6934cea
@ -1,4 +1,7 @@
|
||||
using Microsoft.VisualStudio.TestTools.UnitTesting;
|
||||
using MySqlX.XDevAPI.Common;
|
||||
using System;
|
||||
using System.Linq;
|
||||
|
||||
namespace Falcon.SugarApi.Test
|
||||
{
|
||||
@ -13,31 +16,31 @@ namespace Falcon.SugarApi.Test
|
||||
public void TestSplit() {
|
||||
var str = $"a,b.c;d，e。f；g";
|
||||
var strArr = str.SplitStr();
|
||||
Assert.AreEqual(7, strArr.Length, "分割后长度应该为7");
|
||||
Assert.AreEqual(7,strArr.Length,"分割后长度应该为7");
|
||||
str = "a,,, ,b ,c c,";
|
||||
strArr = str.SplitStr();
|
||||
Assert.AreEqual(3, strArr.Length, "分割后长度应该为3");
|
||||
Assert.AreEqual("a", strArr[0]);
|
||||
Assert.AreEqual("b", strArr[1]);
|
||||
Assert.AreEqual("c c", strArr[2]);
|
||||
Assert.AreEqual(3,strArr.Length,"分割后长度应该为3");
|
||||
Assert.AreEqual("a",strArr[0]);
|
||||
Assert.AreEqual("b",strArr[1]);
|
||||
Assert.AreEqual("c c",strArr[2]);
|
||||
str = null;
|
||||
strArr = str.SplitStr();
|
||||
Assert.IsNotNull(strArr);
|
||||
Assert.AreEqual(0, strArr.Length);
|
||||
Assert.AreEqual(0,strArr.Length);
|
||||
|
||||
//指定分隔符
|
||||
str = $"a,b.c;d，e。f；g";
|
||||
|
||||
strArr = str.SplitStr(',');
|
||||
Assert.AreEqual(2, strArr.Length, "分割后长度应该为7");
|
||||
Assert.AreEqual("a", strArr[0]);
|
||||
Assert.AreEqual("b.c;d，e。f；g", strArr[1]);
|
||||
Assert.AreEqual(2,strArr.Length,"分割后长度应该为7");
|
||||
Assert.AreEqual("a",strArr[0]);
|
||||
Assert.AreEqual("b.c;d，e。f；g",strArr[1]);
|
||||
|
||||
strArr = str.SplitStr(',', '.');
|
||||
Assert.AreEqual(3, strArr.Length, "分割后长度应该为7");
|
||||
Assert.AreEqual("a", strArr[0]);
|
||||
Assert.AreEqual("b", strArr[1]);
|
||||
Assert.AreEqual("c;d，e。f；g", strArr[2]);
|
||||
strArr = str.SplitStr(',','.');
|
||||
Assert.AreEqual(3,strArr.Length,"分割后长度应该为7");
|
||||
Assert.AreEqual("a",strArr[0]);
|
||||
Assert.AreEqual("b",strArr[1]);
|
||||
Assert.AreEqual("c;d，e。f；g",strArr[2]);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
@ -48,13 +51,67 @@ namespace Falcon.SugarApi.Test
|
||||
var str = "";
|
||||
var r = "";
|
||||
r = str.ToDefault("abc");
|
||||
Assert.AreEqual("abc", r);
|
||||
Assert.AreEqual("abc",r);
|
||||
str = null;
|
||||
r = str.ToDefault("abc");
|
||||
Assert.AreEqual("abc", r);
|
||||
Assert.AreEqual("abc",r);
|
||||
str = "123";
|
||||
r = str.ToDefault("abc");
|
||||
Assert.AreEqual("123", r);
|
||||
Assert.AreEqual("123",r);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// 检索子字符串测试
|
||||
/// </summary>
|
||||
[TestMethod]
|
||||
public void TestSubstringEx() {
|
||||
var str = "abcd33";
|
||||
string r;
|
||||
r = str.SubstringEx(str.Length + 1,1);
|
||||
Assert.IsTrue(r == "");
|
||||
r = str.SubstringEx(0,0);
|
||||
Assert.IsTrue(r == "");
|
||||
r = str.SubstringEx(3,-1);
|
||||
Assert.IsTrue(r == "c");
|
||||
r = str.SubstringEx(3,10);
|
||||
Assert.IsTrue(r == "d33");
|
||||
r = str.SubstringEx(-1,2);
|
||||
Assert.IsTrue(r == "a");
|
||||
r = str.SubstringEx(1,2);
|
||||
Assert.IsTrue(r == "bc");
|
||||
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// 按一定长度分割字符串测试
|
||||
/// </summary>
|
||||
[TestMethod]
|
||||
public void TestSplitByLength() {
|
||||
string str;
|
||||
string[] result;
|
||||
|
||||
str = "";
|
||||
Assert.ThrowsException<ArgumentNullException>(() => { result = str.Split(5).ToArray(); });
|
||||
str = "abc";
|
||||
Assert.ThrowsException<Exception>(() => { result = str.Split(0).ToArray(); });
|
||||
result = str.Split(1).ToArray();
|
||||
Assert.IsTrue(result.Length == 3);
|
||||
Assert.IsTrue(result[0] == "a");
|
||||
Assert.IsTrue(result[1] == "b");
|
||||
Assert.IsTrue(result[2] == "c");
|
||||
|
||||
result = str.Split(2).ToArray();
|
||||
Assert.IsTrue(result.Length == 2);
|
||||
Assert.IsTrue(result[0] == "ab");
|
||||
Assert.IsTrue(result[1] == "c");
|
||||
|
||||
result = str.Split(3).ToArray();
|
||||
Assert.IsTrue(result.Length == 1);
|
||||
Assert.IsTrue(result[0] == "abc");
|
||||
|
||||
result = str.Split(4).ToArray();
|
||||
Assert.IsTrue(result.Length == 1);
|
||||
Assert.IsTrue(result[0] == "abc");
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
@ -1,6 +1,9 @@
|
||||
using System;
|
||||
using System.Collections.Generic;
|
||||
using System.Diagnostics.CodeAnalysis;
|
||||
using System.Globalization;
|
||||
using System.Linq;
|
||||
using System.Reflection.Metadata;
|
||||
|
||||
namespace Falcon.SugarApi
|
||||
{
|
||||
@ -28,7 +31,7 @@ namespace Falcon.SugarApi
|
||||
/// <param name="str">字符串</param>
|
||||
/// <param name="defaultVal">默认值</param>
|
||||
/// <returns>字符串本身或默认值</returns>
|
||||
public static string? ToDefault(this string? str, [NotNull] string defaultVal) => str.IsNullOrEmpty() ? defaultVal : str;
|
||||
public static string? ToDefault(this string? str,[NotNull] string defaultVal) => str.IsNullOrEmpty() ? defaultVal : str;
|
||||
|
||||
/// <summary>
|
||||
/// 使用全角半角的逗号句号和分号分割字符串。
|
||||
@ -36,8 +39,8 @@ namespace Falcon.SugarApi
|
||||
/// <param name="str">要分割的字符串</param>
|
||||
/// <param name="splitChars"></param>
|
||||
/// <returns>字符串数组。当str为null时返回空数组</returns>
|
||||
public static string[] SplitStr(this string? str, params char[] splitChars)
|
||||
=> str.IsNullOrEmpty() ? Array.Empty<string>() : str.Split(splitChars.Length == 0 ? new char[] { ',', '，', ';', '；', '.', '。' } : splitChars, StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries);
|
||||
public static string[] SplitStr(this string? str,params char[] splitChars)
|
||||
=> str.IsNullOrEmpty() ? Array.Empty<string>() : str.Split(splitChars.Length == 0 ? new char[] { ',','，',';','；','.','。' } : splitChars,StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries);
|
||||
|
||||
|
||||
/// <summary>
|
||||
@ -47,12 +50,12 @@ namespace Falcon.SugarApi
|
||||
/// <param name="dateTimeFormat">时间格式</param>
|
||||
/// <param name="culture">区域特性.默认CultureInfo.InvariantCulture</param>
|
||||
/// <returns>时间</returns>
|
||||
public static DateTime ToDateTime(this string str, string dateTimeFormat = "", CultureInfo? culture = null) {
|
||||
public static DateTime ToDateTime(this string str,string dateTimeFormat = "",CultureInfo? culture = null) {
|
||||
culture ??= CultureInfo.InvariantCulture;
|
||||
if (dateTimeFormat.IsNullOrEmpty()) {
|
||||
if(dateTimeFormat.IsNullOrEmpty()) {
|
||||
return DateTime.Parse(str);
|
||||
}
|
||||
return DateTime.ParseExact(str, dateTimeFormat, culture);
|
||||
return DateTime.ParseExact(str,dateTimeFormat,culture);
|
||||
}
|
||||
/// <summary>
|
||||
/// 尝试将特定格式字符串转换为DateTime类型
|
||||
@ -62,12 +65,11 @@ namespace Falcon.SugarApi
|
||||
/// <param name="dt">转换后的时间</param>
|
||||
/// <param name="culture">区域特性.默认CultureInfo.InvariantCulture</param>
|
||||
/// <returns>成功True，失败False</returns>
|
||||
public static bool TryToDateTime(this string str, string dateTimeFormat, out DateTime dt, CultureInfo? culture = null) {
|
||||
public static bool TryToDateTime(this string str,string dateTimeFormat,out DateTime dt,CultureInfo? culture = null) {
|
||||
try {
|
||||
dt = str.ToDateTime(dateTimeFormat, culture);
|
||||
dt = str.ToDateTime(dateTimeFormat,culture);
|
||||
return true;
|
||||
}
|
||||
catch (Exception) {
|
||||
} catch(Exception) {
|
||||
dt = default;
|
||||
return false;
|
||||
}
|
||||
@ -80,14 +82,64 @@ namespace Falcon.SugarApi
|
||||
/// <param name="dateFormat">日期时间格式</param>
|
||||
/// <returns>是True，否False</returns>
|
||||
/// <exception cref="ArgumentNullException">参数为空</exception>
|
||||
public static bool IsDateFormat(this string str, string dateFormat) {
|
||||
if (str.IsNullOrEmpty()) {
|
||||
public static bool IsDateFormat(this string str,string dateFormat) {
|
||||
if(str.IsNullOrEmpty()) {
|
||||
throw new ArgumentNullException(nameof(str));
|
||||
}
|
||||
if (dateFormat.IsNullOrEmpty()) {
|
||||
if(dateFormat.IsNullOrEmpty()) {
|
||||
throw new ArgumentNullException(nameof(dateFormat));
|
||||
}
|
||||
return str.TryToDateTime(dateFormat, out var _);
|
||||
return str.TryToDateTime(dateFormat,out var _);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// 获取子字符串
|
||||
/// <para>如果start大于字符串长度或者length等于0则返回空字符串。</para>
|
||||
/// <para>如果length小于0则返回start前面长度的字符串。</para>
|
||||
/// <para>如果字符串不满足需要的长度要求则返回实际长度字符串。</para>
|
||||
/// <para>如果start小于0，则返回从0开始的length+start长度字符串。</para>
|
||||
/// </summary>
|
||||
/// <param name="str">要检索的字符串</param>
|
||||
/// <param name="start">开始位置</param>
|
||||
/// <param name="length">获取长度</param>
|
||||
/// <returns>子字符串</returns>
|
||||
/// <exception cref="Exception">获取长度不满足要求</exception>
|
||||
public static string SubstringEx(this string str,int start,int length) {
|
||||
if(start > str.Length || length == 0) {
|
||||
return "";
|
||||
}
|
||||
if(length < 0) {
|
||||
start = start + length;
|
||||
length = -length;
|
||||
}
|
||||
if(start < 0) {
|
||||
length += start;
|
||||
start = 0;
|
||||
}
|
||||
if(start + length > str.Length) {
|
||||
return str.Substring(start);
|
||||
}
|
||||
return str.Substring(start,length);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// 按照固定长度分割字符串
|
||||
/// </summary>
|
||||
/// <param name="str">要分割的字符串</param>
|
||||
/// <param name="length">分割长度</param>
|
||||
/// <returns>分割后的字符串枚举</returns>
|
||||
public static IEnumerable<string> Split(this string str,int length) {
|
||||
if(length <= 0) {
|
||||
throw new Exception("分割长度必须大于0");
|
||||
}
|
||||
if(str.IsNullOrEmpty()) {
|
||||
throw new ArgumentNullException(nameof(str));
|
||||
}
|
||||
int i = 0;
|
||||
while(str.Length > i) {
|
||||
yield return str.SubstringEx(i,length);
|
||||
i += length;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
Loading…
x
Reference in New Issue
Block a user