C# 使用类似 'dd MMMM yyyy HH:mm' 的字符串来定义日期和时间的显示格式。
momentjs 中的等效项是 'DD MMMM YYYY HH:mm'。
是否有一些函数可以将一种格式定义转换为另一种格式定义，而不管源格式包含的格式说明符的(合法)组合是什么？
基本上我想要的是:
function toMomentJsFormatDefinition(cSharpFormatDefinition) {
// should convert all format strings described here https://msdn.microsoft.com/en-us/library/8kb3ddd4%28v=vs.110%29.aspx
}
console.log(toMomentJsFormatDefinition('dd MMMM yyyy HH:mm'));
// outputs DD MMMM YYYY HH:mm
理想情况下，toMomentJsFormatDefinition 应该在我将在我的项目中使用的一些已经编写且测试良好的库中定义。
最佳答案
我有同样的任务并创建了以下实用函数来将 DateTime 格式字符串从 Dotnet 格式转换为 MomentJS 格式。
用法:
string lDotNetFormat = "yyyy-MM-dd HH:mm";
string lMomentJSFormat = MomentJSHelpers.GenerateMomentJSFormatString(lDotNetFormat, fTolerant: true, fCulture: CultureInfo.InvariantCulture);
MessageBox.Show(lMomentJSFormat);
// Output: YYYY[-]MM[-]DD[ ]HH[:]mm
代码:
using System;
using System.Globalization;
using System.Text;
namespace XYZ
{
/// <summary>
/// Class with helper functions to work with MomentJS
/// </summary>
public static class MomentJSHelpers
{
/// <summary>
/// Exception that is throws when trying to convert a dotnet datetime format string
/// to a MomentJS format string and this fails because we have an element in the format string
/// that has no equivalent in MomentJS
/// </summary>
public class UnsupportedFormatException : Exception
{
public UnsupportedFormatException (string fMessage): base(fMessage)
{
}
}
/// <summary>
/// Translate a dotnet datetime format string to a MomentJS format string<br/>
// Restriction:<br/>
// Fractional Seconds Lowecase F and Uppercase F are difficult to translate to MomentJS, so closest
// translation used
/// </summary>
/// <param name="fText">The dotnet datetime format string to convert</param>
/// <param name="fTolerant">If true, some cases where there is not exact equivalent in MomentJs is
/// handled by generating a similar format instead of throwing a UnsupportedFormatException exception.</param>
/// <param name="fCulture">The Culture to use. If none, the current Culture is used</param>
/// <returns>A format string to be used in MomentJS</returns>
/// <exception cref="UnsupportedFormatException">Conversion fails because we have an element in the format string
/// that has no equivalent in MomentJS</exception>
/// <exception cref="FormatException">fText is no valid DateTime format string in dotnet</exception>
/// <exception cref="ArgumentNullException">fText is null</exception>
public static string GenerateMomentJSFormatString(string fText, bool fTolerant = true, CultureInfo fCulture = null)
{
fCulture = fCulture ?? CultureInfo.CurrentCulture;
string lResult;
if(fText == null)
{
throw new ArgumentNullException("fText");
}
if(fText.Length == 0)
{
lResult = "";
}
if (fText.Length == 1)
{
lResult = GenerateMomentJSFormatStringFromStandardFormat(fText, fTolerant, fCulture);
}
else
{
lResult = GenerateMomentJSFormatStringFromUserFormat(fText, fTolerant, fCulture);
}
return lResult;
}
/// <summary>
/// State of StateMachine while scanning Format DateTime string
/// </summary>
private enum State
{
None,
LowerD1,
LowerD2,
LowerD3,
LowerD4,
LowerF1,
LowerF2,
LowerF3,
LowerF4,
LowerF5,
LowerF6,
LowerF7,
CapitalF1,
CapitalF2,
CapitalF3,
CapitalF4,
CapitalF5,
CapitalF6,
CapitalF7,
LowerG,
LowerH1,
LowerH2,
CapitalH1,
CapitalH2,
CapitalK,
LowerM1,
LowerM2,
CapitalM1,
CapitalM2,
CapitalM3,
CapitalM4,
LowerS1,
LowerS2,
LowerT1,
LowerT2,
LowerY1,
LowerY2,
LowerY3,
LowerY4,
LowerY5,
LowerZ1,
LowerZ2,
LowerZ3,
InSingleQuoteLiteral,
InDoubleQuoteLiteral,
EscapeSequence
}
private static string GenerateMomentJSFormatStringFromUserFormat(string fText, bool fTolerant, CultureInfo fCulture)
{
StringBuilder lResult = new StringBuilder();
State lState = State.None;
StringBuilder lTokenBuffer = new StringBuilder();
var ChangeState = new Action<State>((State fNewState) =>
{
switch (lState)
{
case State.LowerD1:
lResult.Append("D");
break;
case State.LowerD2:
lResult.Append("DD");
break;
case State.LowerD3:
lResult.Append("ddd");
break;
case State.LowerD4:
lResult.Append("dddd");
break;
case State.LowerF1:
case State.CapitalF1:
lResult.Append("S");
break;
case State.LowerF2:
case State.CapitalF2:
lResult.Append("SS");
break;
case State.LowerF3:
case State.CapitalF3:
lResult.Append("SSS");
break;
case State.LowerF4:
case State.CapitalF4:
lResult.Append("SSSS");
break;
case State.LowerF5:
case State.CapitalF5:
lResult.Append("SSSSS");
break;
case State.LowerF6:
case State.CapitalF6:
lResult.Append("SSSSSS");
break;
case State.LowerF7:
case State.CapitalF7:
lResult.Append("SSSSSSS");
break;
case State.LowerG:
throw new UnsupportedFormatException("Era not supported in MomentJS");
case State.LowerH1:
lResult.Append("h");
break;
case State.LowerH2:
lResult.Append("hh");
break;
case State.CapitalH1:
lResult.Append("H");
break;
case State.CapitalH2:
lResult.Append("HH");
break;
case State.LowerM1:
lResult.Append("m");
break;
case State.LowerM2:
lResult.Append("mm");
break;
case State.CapitalM1:
lResult.Append("M");
break;
case State.CapitalM2:
lResult.Append("MM");
break;
case State.CapitalM3:
lResult.Append("MMM");
break;
case State.CapitalM4:
lResult.Append("MMMM");
break;
case State.LowerS1:
lResult.Append("s");
break;
case State.LowerS2:
lResult.Append("ss");
break;
case State.LowerT1:
if (fTolerant)
{
lResult.Append("A");
}
else
{
throw new UnsupportedFormatException("Single Letter AM/PM not supported in MomentJS");
}
break;
case State.LowerT2:
lResult.Append("A");
break;
case State.LowerY1:
if (fTolerant)
{
lResult.Append("YY");
}
else
{
throw new UnsupportedFormatException("Single Letter Year not supported in MomentJS");
}
break;
case State.LowerY2:
lResult.Append("YY");
break;
case State.LowerY3:
if (fTolerant)
{
lResult.Append("YYYY");
}
else
{
throw new UnsupportedFormatException("Three Letter Year not supported in MomentJS");
}
break;
case State.LowerY4:
lResult.Append("YYYY");
break;
case State.LowerY5:
if(fTolerant)
{
lResult.Append("Y");
}
else
{
throw new UnsupportedFormatException("Five or more Letter Year not supported in MomentJS");
}
break;
case State.LowerZ1:
case State.LowerZ2:
if (fTolerant)
{
lResult.Append("ZZ");
}
else
{
throw new UnsupportedFormatException("Hours offset not supported in MomentJS");
}
break;
case State.LowerZ3:
lResult.Append("Z");
break;
case State.InSingleQuoteLiteral:
case State.InDoubleQuoteLiteral:
case State.EscapeSequence:
foreach (var lCharacter in lTokenBuffer.ToString())
{
lResult.Append("[" + lCharacter + "]");
}
break;
}
lTokenBuffer.Clear();
lState = fNewState;
}); // End ChangeState
foreach (var character in fText)
{
if (lState == State.EscapeSequence)
{
lTokenBuffer.Append(character);
ChangeState(State.None);
}
else if (lState == State.InDoubleQuoteLiteral)
{
if (character == '\"')
{
ChangeState(State.None);
}
else
{
lTokenBuffer.Append(character);
}
}
else if (lState == State.InSingleQuoteLiteral)
{
if (character == '\'')
{
ChangeState(State.None);
}
else
{
lTokenBuffer.Append(character);
}
}
else
{
switch (character)
{
case 'd':
switch (lState)
{
case State.LowerD1:
lState = State.LowerD2;
break;
case State.LowerD2:
lState = State.LowerD3;
break;
case State.LowerD3:
lState = State.LowerD4;
break;
case State.LowerD4:
break;
default:
ChangeState(State.LowerD1);
break;
}
break;
case 'f':
switch (lState)
{
case State.LowerF1:
lState = State.LowerF2;
break;
case State.LowerF2:
lState = State.LowerF3;
break;
case State.LowerF3:
lState = State.LowerF4;
break;
case State.LowerF4:
lState = State.LowerF5;
break;
case State.LowerF5:
lState = State.LowerF6;
break;
case State.LowerF6:
lState = State.LowerF7;
break;
case State.LowerF7:
break;
default:
ChangeState(State.LowerF1);
break;
}
break;
case 'F':
switch (lState)
{
case State.CapitalF1:
lState = State.CapitalF2;
break;
case State.CapitalF2:
lState = State.CapitalF3;
break;
case State.CapitalF3:
lState = State.CapitalF4;
break;
case State.CapitalF4:
lState = State.CapitalF5;
break;
case State.CapitalF5:
lState = State.CapitalF6;
break;
case State.CapitalF6:
lState = State.CapitalF7;
break;
case State.CapitalF7:
break;
default:
ChangeState(State.CapitalF1);
break;
}
break;
case 'g':
switch (lState)
{
case State.LowerG:
break;
default:
ChangeState(State.LowerG);
break;
}
break;
case 'h':
switch (lState)
{
case State.LowerH1:
lState = State.LowerH2;
break;
case State.LowerH2:
break;
default:
ChangeState(State.LowerH1);
break;
}
break;
case 'H':
switch (lState)
{
case State.CapitalH1:
lState = State.CapitalH2;
break;
case State.CapitalH2:
break;
default:
ChangeState(State.CapitalH1);
break;
}
break;
case 'K':
ChangeState(State.None);
if (fTolerant)
{
lResult.Append("Z");
}
else
{
throw new UnsupportedFormatException("TimeZoneInformation not supported in MomentJS");
}
break;
case 'm':
switch (lState)
{
case State.LowerM1:
lState = State.LowerM2;
break;
case State.LowerM2:
break;
default:
ChangeState(State.LowerM1);
break;
}
break;
case 'M':
switch (lState)
{
case State.CapitalM1:
lState = State.CapitalM2;
break;
case State.CapitalM2:
lState = State.CapitalM3;
break;
case State.CapitalM3:
lState = State.CapitalM4;
break;
case State.CapitalM4:
break;
default:
ChangeState(State.CapitalM1);
break;
}
break;
case 's':
switch (lState)
{
case State.LowerS1:
lState = State.LowerS2;
break;
case State.LowerS2:
break;
default:
ChangeState(State.LowerS1);
break;
}
break;
case 't':
switch (lState)
{
case State.LowerT1:
lState = State.LowerT2;
break;
case State.LowerT2:
break;
default:
ChangeState(State.LowerT1);
break;
}
break;
case 'y':
switch (lState)
{
case State.LowerY1:
lState = State.LowerY2;
break;
case State.LowerY2:
lState = State.LowerY3;
break;
case State.LowerY3:
lState = State.LowerY4;
break;
case State.LowerY4:
lState = State.LowerY5;
break;
case State.LowerY5:
break;
default:
ChangeState(State.LowerY1);
break;
}
break;
case 'z':
switch (lState)
{
case State.LowerZ1:
lState = State.LowerZ2;
break;
case State.LowerZ2:
lState = State.LowerZ3;
break;
case State.LowerZ3:
break;
default:
ChangeState(State.LowerZ1);
break;
}
break;
case ':':
ChangeState(State.None);
lResult.Append("[" + fCulture.DateTimeFormat.TimeSeparator + "]");
break;
case '/':
ChangeState(State.None);
lResult.Append("[" + fCulture.DateTimeFormat.DateSeparator + "]");
break;
case '\"':
ChangeState(State.InDoubleQuoteLiteral);
break;
case '\'':
ChangeState(State.InSingleQuoteLiteral);
break;
case '%':
ChangeState(State.None);
break;
case '\\':
ChangeState(State.EscapeSequence);
break;
default:
ChangeState(State.None);
lResult.Append("[" + character + "]");
break;
}
}
}
if (lState == State.EscapeSequence || lState == State.InDoubleQuoteLiteral || lState == State.InSingleQuoteLiteral)
{
throw new FormatException("Invalid Format String");
}
ChangeState(State.None);
return lResult.ToString();
}
private static string GenerateMomentJSFormatStringFromStandardFormat(string fText, bool fTolerant, CultureInfo fCulture)
{
string result;
switch (fText)
{
case "d":
result = GenerateMomentJSFormatStringFromUserFormat(fCulture.DateTimeFormat.ShortDatePattern, fTolerant, fCulture);
break;
case "D":
result = GenerateMomentJSFormatStringFromUserFormat(fCulture.DateTimeFormat.LongDatePattern, fTolerant, fCulture);
break;
case "f":
result = GenerateMomentJSFormatStringFromUserFormat(fCulture.DateTimeFormat.LongDatePattern + " " + fCulture.DateTimeFormat.ShortTimePattern, fTolerant, fCulture);
break;
case "F":
result = GenerateMomentJSFormatStringFromUserFormat(fCulture.DateTimeFormat.FullDateTimePattern, fTolerant, fCulture);
break;
case "g":
result = GenerateMomentJSFormatStringFromUserFormat(fCulture.DateTimeFormat.ShortDatePattern + " " + fCulture.DateTimeFormat.ShortTimePattern, fTolerant, fCulture);
break;
case "G":
result = GenerateMomentJSFormatStringFromUserFormat(fCulture.DateTimeFormat.ShortDatePattern + " " + fCulture.DateTimeFormat.LongTimePattern, fTolerant, fCulture);
break;
case "M":
case "m":
result = GenerateMomentJSFormatStringFromUserFormat(fCulture.DateTimeFormat.MonthDayPattern, fTolerant, fCulture);
break;
case "O":
case "o":
result = GenerateMomentJSFormatStringFromUserFormat("yyyy'-'MM'-'dd'T'HH':'mm':'ss'.'fffffffK", fTolerant, fCulture);
break;
case "R":
case "r":
throw new UnsupportedFormatException("RFC 1123 not supported in MomentJS");
case "s":
result = GenerateMomentJSFormatStringFromUserFormat(fCulture.DateTimeFormat.SortableDateTimePattern, fTolerant, fCulture);
break;
case "t":
result = GenerateMomentJSFormatStringFromUserFormat(fCulture.DateTimeFormat.ShortTimePattern, fTolerant, fCulture);
break;
case "T":
result = GenerateMomentJSFormatStringFromUserFormat(fCulture.DateTimeFormat.LongTimePattern, fTolerant, fCulture);
break;
case "u":
throw new UnsupportedFormatException("Universal Sortable Format not supported in MomentJS");
case "U":
throw new UnsupportedFormatException("Universal Fulll Format not supported in MomentJS");
case "Y":
case "y":
result = GenerateMomentJSFormatStringFromUserFormat(fCulture.DateTimeFormat.YearMonthPattern, fTolerant, fCulture);
break;
default:
throw new FormatException("Unknown Standard DateTime Format");
}
return result;
}
}
}
关于javascript - 如何将 C# 使用的日期时间格式字符串转换为 moment.js 使用的格式？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/30572317/
我正在学习如何使用Nokogiri，根据这段代码我遇到了一些问题:require'rubygems'require'mechanize'post_agent=WWW::Mechanize.newpost_page=post_agent.get('http://www.vbulletin.org/forum/showthread.php?t=230708')puts"\nabsolutepathwithtbodygivesnil"putspost_page.parser.xpath('/html/body/div/div/div/div/div/table/tbody/tr/td/div
总的来说，我对ruby还比较陌生，我正在为我正在创建的对象编写一些rspec测试用例。许多测试用例都非常基础，我只是想确保正确填充和返回值。我想知道是否有办法使用循环结构来执行此操作。不必为我要测试的每个方法都设置一个assertEquals。例如:describeitem,"TestingtheItem"doit"willhaveanullvaluetostart"doitem=Item.new#HereIcoulddotheitem.name.shouldbe_nil#thenIcoulddoitem.category.shouldbe_nilendend但我想要一些方法来使用
我有一个字符串input="maybe(thisis|thatwas)some((nice|ugly)(day|night)|(strange(weather|time)))"Ruby中解析该字符串的最佳方法是什么？我的意思是脚本应该能够像这样构建句子:maybethisissomeuglynightmaybethatwassomenicenightmaybethiswassomestrangetime等等，你明白了......我应该一个字符一个字符地读取字符串并构建一个带有堆栈的状态机来存储括号值以供以后计算，还是有更好的方法？也许为此目的准备了一个开箱即用的库？
我有一个Ruby程序，它使用rubyzip压缩XML文件的目录树。gem。我的问题是文件开始变得很重，我想提高压缩级别，因为压缩时间不是问题。我在rubyzipdocumentation中找不到一种为创建的ZIP文件指定压缩级别的方法。有人知道如何更改此设置吗？是否有另一个允许指定压缩级别的Ruby库？ 最佳答案 这是我通过查看rubyzip内部创建的代码。level=Zlib::BEST_COMPRESSIONZip::ZipOutputStream.open(zip_file)do|zip|Dir.glob("**/*")d
类classAprivatedeffooputs:fooendpublicdefbarputs:barendprivatedefzimputs:zimendprotecteddefdibputs:dibendendA的实例a=A.new测试a.foorescueputs:faila.barrescueputs:faila.zimrescueputs:faila.dibrescueputs:faila.gazrescueputs:fail测试输出failbarfailfailfail.发送测试[:foo,:bar,:zim,:dib,:gaz].each{|m|a.send(m)resc
很好奇，就使用rubyonrails自动化单元测试而言，你们正在做什么？您是否创建了一个脚本来在cron中运行rake作业并将结果邮寄给您？git中的预提交Hook？只是手动调用？我完全理解测试，但想知道在错误发生之前捕获错误的最佳实践是什么。让我们理所当然地认为测试本身是完美无缺的，并且可以正常工作。下一步是什么以确保他们在正确的时间将可能有害的结果传达给您？ 最佳答案 不确定您到底想听什么，但是有几个级别的自动代码库控制:在处理某项功能时，您可以使用类似autotest的内容获得关于哪些有效，哪些无效的即时反馈。要确保您的提
假设我做了一个模块如下:m=Module.newdoclassCendend三个问题:除了对m的引用之外，还有什么方法可以访问C和m中的其他内容？我可以在创建匿名模块后为其命名吗(就像我输入“module...”一样)？如何在使用完匿名模块后将其删除，使其定义的常量不再存在？ 最佳答案 三个答案:是的，使用ObjectSpace.此代码使c引用你的类(class)C不引用m:c=nilObjectSpace.each_object{|obj|c=objif(Class===objandobj.name=~/::C$/)}当然这取决于
我的目标是转换表单输入，例如“100兆字节”或“1GB”，并将其转换为我可以存储在数据库中的文件大小(以千字节为单位)。目前，我有这个:defquota_convert@regex=/([0-9]+)(.*)s/@sizes=%w{kilobytemegabytegigabyte}m=self.quota.match(@regex)if@sizes.include?m[2]eval("self.quota=#{m[1]}.#{m[2]}")endend这有效，但前提是输入是倍数(“gigabytes”，而不是“gigabyte”)并且由于使用了eval看起来疯狂不安全。所以，功能正常，
我正在尝试使用ruby和Savon来使用网络服务。测试服务为http://www.webservicex.net/WS/WSDetails.aspx?WSID=9&CATID=2require'rubygems'require'savon'client=Savon::Client.new"http://www.webservicex.net/stockquote.asmx?WSDL"client.get_quotedo|soap|soap.body={:symbol=>"AAPL"}end返回SOAP异常。检查soap信封，在我看来soap请求没有正确的命名空间。任何人都可以建议我
在我的Rails(2.3，Ruby1.8.7)应用程序中，我需要将字符串截断到一定长度。该字符串是unicode，在控制台中运行测试时，例如'א'.length，我意识到返回了双倍长度。我想要一个与编码无关的长度，以便对unicode字符串或latin1编码字符串进行相同的截断。我已经了解了Ruby的大部分unicode资料，但仍然有些一头雾水。应该如何解决这个问题？ 最佳答案 Rails有一个返回多字节字符的mb_chars方法。试试unicode_string.mb_chars.slice(0,50)