Does something like std.algorithm.iteration:splitter with multiple seperators exist?

[ParticlePeter via Digitalmars-d-learn]

I need to parse an ascii with multiple tokens. The tokens can be 
seen as keys. After every token there is a bunch of lines 
belonging to that token, the values.
The order of tokens is unknown.

I would like to read the file in as a whole string, and split the 
string with:
splitter(fileString, [token1, token2, ... tokenN]);

And would like to get a range of strings each starting with 
tokenX and ending before the next token.

Does something like this exist?

I know how to parse the string line by line and create new 
strings and append the appropriate lines, but I don't know how to 
do this with a lazy result range and new allocations.