daspartho / file-set

Performing set operations on files considered as sets of lines

CLI tool that can be used to do set operations like union on files considering them as a set of lines.

Notes

• It ignores all empty lines with whitespaces.
• Each output line occurs only once, because we're treating the files as sets and the lines as their elements.
• List data type has been used instead of set to maintain the order of lines.
• It ignores all lines endings (\r\n or \n) when comparing lines, so two input lines compare the same if their only difference is that one ends in \r\n and the other in \r.

Operations

• union x y outputs the lines that occur in either x or y or both.
• intersection x y outputs the lines that occur in both x and y.
• difference x y outputs the lines that occur in x but not in y.
• is-subset x y outputs whether all the lines in x are present in y.
• is-superset x y outputs whether all the lines in y are present in x.
• is-equal x y outputs whether all the lines in x are present in y and vice-versa.
• is-disjoint x y outputs whether there are no lines in common in x and y.
• symmetric-difference x y outputs the lines that occur in x but not in y and vice-versa.

Installation

git clone https://github.com/daspartho/file-set.git

cd file-set

Usage

python main.py <operation> <first file> <second file>

Example

python main.py union test.py temp.txt