Minicli

Minimalist OCaml library for command line parsing. Look into the test.ml file for usage examples/quickstart.

"Minicli: because the UNIX command-line is to the computer scientist what latin and greek are to the linguist"

Example session with the test program

# _build/default/test.exe
usage:
_build/default/test.exe {-i|--input} <file> {-o|--output} <file> -n <int> -x <float> [-v] [--hi <string>]

# _build/default/test.exe -i
Fatal error: exception Minicli__CLI.No_param_for_option("-i")

# _build/default/test.exe -i input.txt
Fatal error: exception Minicli__CLI.Option_is_mandatory("-o")

# _build/default/test.exe -i input.txt -o output.txt
Fatal error: exception Minicli__CLI.Option_is_mandatory("-n")

# _build/default/test.exe -i input.txt -o output.txt -n /dev/null
Fatal error: exception Minicli__CLI.Not_an_int("/dev/null")

# _build/default/test.exe -i input.txt -o output.txt -n 123
Fatal error: exception Minicli__CLI.Option_is_mandatory("-x")

# _build/default/test.exe -i input.txt -o output.txt -n 123 -x /dev/null
Fatal error: exception Minicli__CLI.Not_a_float("/dev/null")

# _build/default/test.exe -i input.txt -o output.txt -n 123 -x 0.123
i: input.txt o: output.txt n: 123 x: 0.123000 v: false

# _build/default/test.exe -i input.txt -o output.txt -n 123 -x 0.123 -v
i: input.txt o: output.txt n: 123 x: 0.123000 v: true

# _build/default/test.exe -i input.txt -o output.txt -n 123 -x 0.123 -v -i input.bin
Fatal error: exception Minicli__CLI.More_than_once("-i, --input")

# _build/default/test.exe --toto titi -i input.txt -o output.txt -n 123 -x 0.123 -v -y 42
Fatal error: exception Minicli__CLI.Unused_options("--toto,-y")

Bibliography

Stephenson, N. (1999). In the beginning... was the command line. New York: Avon books.