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Re: Pop3 class and reference examples for U++ [message #42948 is a reply to message #42698]

Wed, 16 April 2014 03:00

Oblivion
Messages: 1093
Registered: August 2007

Senior Contributor

Hello Mirek,
I see that you recently added ParseMessageIDs() method to the InetMessage class.
The code block in that function is something I encounter often. Especially when parsing some text (you can even see it in the Pop3::GetTimestamp()).
Maybe we should put that code under String utilities and change the code accordingly?
So I wrote the following Slice() functions which you can also come by in some other C++/Java frameworks.


int Slice(const String& s, String& d, const String& delim1, const String& delim2, int pos = 0)
{
	int b = -1, e = -1;
	if((b = s.Find(delim1, pos)) == -1 || (e = s.Find(delim2, b += delim1.GetLength())) == -1) 
		return -1;
	d = s.Mid(b, e - b);
	return e += delim2.GetLength();
}

int Slice(const WString& s, WString& d, const WString& delim1, const WString& delim2, int pos = 0)
{
	int b = -1, e = -1;
	if((b = s.Find(delim1, pos)) == -1 || (e = s.Find(delim2, b += delim1.GetLength())) == -1) 
		return -1;
	d = s.Mid(b, e - b);
	return e += delim2.GetLength();
}

int Slice(const String& s, String& d, int delim1, int delim2, int pos = 0)
{
	int b = -1, e = -1;
	if((b = s.Find(delim1, pos)) == -1 || (e = s.Find(delim2, ++b)) == -1) 
		return -1;
	d = s.Mid(b, e - b);
	return ++e;
}

int Slice(const WString& s, WString& d, int delim1, int delim2, int pos = 0)
{
	int b = -1, e = -1;
	if((b = s.Find(delim1, pos)) == -1 || (e = s.Find(delim2, ++b)) == -1) 
		return -1;
	d = s.Mid(b, e - b);
	return ++e;
}

String Slice(const String& s, const String& delim1, const String& delim2)
{	
	String r;
	return (Slice(s, r, delim1, delim2) == -1) ? String::GetVoid() : r;
}

WString Slice(const WString& s, const WString& delim1, const WString& delim2)
{	
	WString r;
	return (Slice(s, r, delim1, delim2) == -1) ? WString::GetVoid() : r;
}

String Slice(const String& s, int delim1, int delim2)
{	
	String r;
	return (Slice(s, r, delim1, delim2) == -1) ? String::GetVoid() : r;
}

WString Slice(const WString& s, int delim1, int delim2)
{
	WString r;
	return (Slice(s, r, delim1, delim2) == -1) ? WString::GetVoid() : r;

}

They are really useful for parsing text. I already patched my local copy of upp (with its api reference doc in "String utility functions" section).
By the way, I can upload the patched files if you have time to review them and also approve them.

Regards.

Github page: https://github.com/ismail-yilmaz
upp-components: https://github.com/ismail-yilmaz/upp-components
Bobcat the terminal emulator: https://github.com/ismail-yilmaz/Bobcat

[Updated on: Wed, 16 April 2014 14:28]

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