转换的Uni code到Windows 1252的电子名片 [英] Converting Unicode to Windows-1252 for vCards
问题描述
我试图在编写程序的 C#,将分割电子名片(VCF)与多个联系人到单独的文件为每个联系人文件。据我所知,电子名片需要保存为ANSI(1252)对于大多数手机阅读它们。
不过,如果我使用的StreamReader
然后用的StreamWriter
写回打开VCF文件(设置1252为编码格式),所有的特殊字符,如 A
,æ
和 0
越来越写成?
。当然,ANSI(1252)将支持这些字符。我该如何解决这个问题?
编辑:下面是我用它来读取和写入文件的一块code
。 私人无效的ReadFile()
{
StreamReader的sreader =新的StreamReader(sourceVCFFile);
字符串fullFileContents = sreader.ReadToEnd();
}
私人无效WriteFile的()
{
StreamWriter的swriter =新的StreamWriter(sourceVCFFile,假的,Encoding.GetEncoding(1252));
swriter.Write(fullFileContents);
}
您是正确的假设的Windows 1252支持你上面列出的特殊字符(完整列表见的百科词条)。
使用(VAR作家=新的StreamWriter(目的地,真实,Encoding.GetEncoding(1252)))
{
writer.WriteLine(源);
}
在我使用code以上就产生这一结果的测试应用程序:
看爽信我可以!,,自动曝光和O
没有问号。你要为你的时候用的StreamReader
?
编辑:
你应该只可以使用 Encoding.Convert
为UTF-8 VCF文件转换到Windows 1252。无需 Regex.Replace
。下面是我会怎么做:
//你可能需要考虑一个更好的方法名。
公共字符串ConvertUTF8ToWin1252(字符串源)
{
编码UTF8 =新UTF8Encoding();
编码win1252 = Encoding.GetEncoding(1252);
byte []的输入= source.ToUTF8ByteArray(); //注意使用我的扩展方法
byte []的输出= Encoding.Convert(UTF8,win1252,输入);
返回win1252.GetString(输出);
}
这里是我如何扩展方法如下:
公共静态类的StringHelper
{
//应当指出的是,这种方法只期待UTF-8的输入,
//所以你应该给它一个更合适的名字。
公共静态的byte [] ToUTF8ByteArray(此字符串str)
{
编码编码=新UTF8Encoding();
返回encoding.GetBytes(STR);
}
}
另外,你可能会想<一href="http://stackoverflow.com/questions/567138/when-should-i-use-using-blocks-in-c/567325#567325">add 使用
s到你的的ReadFile
和 WriteFile的
的方法。一>
I am trying to write a program in C# that will split a vCard (VCF) file with multiple contacts into individual files for each contact. I understand that the vCard needs to be saved as ANSI (1252) for most mobile phones to read them.
However, if I open a VCF file using StreamReader
and then write it back with StreamWriter
(setting 1252 as the Encoding format), all special characters like å
, æ
and ø
are getting written as ?
. Surely ANSI (1252) would support these characters. How do I fix this?
Edit: Here's the piece of code I use to read and write the file.
private void ReadFile()
{
StreamReader sreader = new StreamReader(sourceVCFFile);
string fullFileContents = sreader.ReadToEnd();
}
private void WriteFile()
{
StreamWriter swriter = new StreamWriter(sourceVCFFile, false, Encoding.GetEncoding(1252));
swriter.Write(fullFileContents);
}
You are correct in assuming that Windows-1252 supports the special characters you listed above (for a full list see the Wikipedia entry).
using (var writer = new StreamWriter(destination, true, Encoding.GetEncoding(1252)))
{
writer.WriteLine(source);
}
In my test app using the code above it produced this result:
Look at the cool letters I can make: å, æ, and ø!
No question marks to be found. Are you setting the encoding when your reading it in with StreamReader
?
EDIT:
You should just be able to use Encoding.Convert
to convert the UTF-8 VCF file into Windows-1252. No need for Regex.Replace
. Here is how I would do it:
// You might want to think of a better method name.
public string ConvertUTF8ToWin1252(string source)
{
Encoding utf8 = new UTF8Encoding();
Encoding win1252 = Encoding.GetEncoding(1252);
byte[] input = source.ToUTF8ByteArray(); // Note the use of my extension method
byte[] output = Encoding.Convert(utf8, win1252, input);
return win1252.GetString(output);
}
And here is how my extension method looks:
public static class StringHelper
{
// It should be noted that this method is expecting UTF-8 input only,
// so you probably should give it a more fitting name.
public static byte[] ToUTF8ByteArray(this string str)
{
Encoding encoding = new UTF8Encoding();
return encoding.GetBytes(str);
}
}
Also you'll probably want to add using
s to your ReadFile
and WriteFile
methods.
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