具有Unicode数据的LoadFromFile [英] LoadFromFile with Unicode data

问题描述

我的输入文件（f）具有一些无法正确读取的Unicode（瑞典语）。

My input file(f) has some Unicode (Swedish) that isn't being read correctly.

这两种方法都不起作用，尽管它们给出的结果不同：

Neither of these approaches works, although they give different results:

  LoadFromFile(f);

或

  LoadFromFile(f,TEncoding.GetEncoding(GetOEMCP));

我正在使用Delphi XE

I'm using Delphi XE

我怎样才能LoadFromFile一些Unicode数据...。又如何随后保存到文件？谢谢

How can I LoadFromFile some Unicode data....also how do I subsequently SaveToFile? Thanks

推荐答案

要加载Unicode文本文件，您需要知道其编码。如果文件具有字节顺序标记（BOM），则只需调用 LoadFromFile（FileName），RTL将使用BOM来确定编码。

In order to load a Unicode text file you need to know its encoding. If the file has a Byte Order Mark (BOM), then you can simply call LoadFromFile(FileName) and the RTL will use the BOM to determine the encoding.

如果文件没有BOM，则需要明确指定编码，例如

If the file does not have a BOM then you need to explicitly specify the encoding, e.g.

LoadFromFile(FileName, TEncoding.UTF8);
LoadFromFile(FileName, TEncoding.Unicode);//UTF-16 LE
LoadFromFile(FileName, TEncoding.BigEndianUnicode);//UTF-16 BE

出于某种原因，我不知道，没有对UTF-32的内置支持，但是如果您有这样的文件，那么就很容易添加 TEncoding 实例来处理该问题。

For some reason, unknown to me, there is no built in support for UTF-32, but if you had such a file then it would be easy enough to add a TEncoding instance to handle that.

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