CODEWITHSUNDEEP
regexparsingerlang
0xAX
0xAX

Reputation: 21817

Regular expressions

I have text file. I try to parse it in erlang.

Text format:

pattern1 : value1
pattern2 : value2
pattern3 : value3
...

What regular expressions to parse this file? I need key-value list in output:

[{pattern1 : value1}, {pattern1 : value1}, {pattern1 : value1}].

Thank you.

Upvotes: 2

Views: 173

Answers (1)

Mazen Harake
Mazen Harake

Reputation: 1726

On top of my head:

foo() ->
    {ok, Fd} = file:open("file.txt", [read]),
    process_lines(Fd, file:read_line(Fd), []).

process_lines(_, eof, Acc) -> Acc;
process_lines(Fd, {ok, Line}, Acc) ->
    [Pattern, Value] = string:tokens(Line, " :\n"),
    process_lines(Fd, file:read_line(Fd), [{Pattern,Value}|Acc]).

I haven't tested this code but something like that should work.

Upvotes: 5

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