使用2个定界符从文本文件中提取字符串 [英] Extract string from a text file using 2 delimiters

问题描述

我正在尝试使用2个定界符从文本文件中提取字符串。

I'm trying to extract a string from a text file using 2 delimiters. One to start and one to stop.

示例：

Hi my name is$John and I'm happy/today

我需要做的是该函数将返回 $ 和 / 之间的字符串。我到处都是，但是似乎找不到有用的东西，而且我还是编程新手。

What I need to do is to call a function that would return the string between $ and /. I've been looking everywhere but I can't seem to find something useful and I'm new to programming.

推荐答案

您可以使用 Pos 和 Copy 做到这一点：

You can do it with Pos and Copy:

function ExtractText(const Str: string; const Delim1, Delim2: char): string;
var
  pos1, pos2: integer;
begin
  result := '';
  pos1 := Pos(Delim1, Str);
  pos2 := Pos(Delim2, Str);
  if (pos1 > 0) and (pos2 > pos1) then
    result := Copy(Str, pos1 + 1, pos2 - pos1 - 1);
end;

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