METAR reports

This is a small utility capable of parsing METAR reports, generating random METAR reports and reporting average wind speed on a set of reports.

Setup

To begin, you need to install Stack, and then install appropriate GHC

$ stack setup

and build the project

$ stack build

Usage

Project consists of two executables: metar and metar-generate. You can run them by prepending stack exec before the name. Running without arguments or with --help flag will show usage instructions.

$ stack exec metar -- --help

metar-generate

This utility helps to generate random METAR reports for testing. For example, generate 200000 reports and save them to file named records.txt:

$ stack exec metar-generate -- -n 200000 -f records.txt

metar

This utility can parse METAR record and print it back, or read a stream (from stdin or file) of records and keep a running average on them.

Parse a single record:

$ stack exec metar -- 'YYZ 122201Z 12023MPS'

Read a stream:

$ stack exec metar -- -f records.txt

It is also possible to utilize unix pipes to simultaneously generate and read a stream of records:

$ stack exec metar-generate -- -n 200000 --stdout | stack exec metar -- --stdin

Testing

Project includes tests for parsers, to run tests execute

$ stack test