ArgParser
command line argument parser
utils
command line
parser
moon add Yoorkin/ArgParser@0.2.1
Download zipAuthor
Version
0.2.1
License
Apache-2.0
Repository
Last updated
6 months ago
Downloads
102K
Dependencies
- Yoorkin/trie0.2.10
README#ArgParser
A simple command-line parser for MoonBit. It uses a declarative style to specify
the command-line interface.
#Usage
///|
using @ArgParser {parse}
///|
let verbose : Ref[Bool] = Ref::new(false)
///|
let output : Ref[String] = Ref::new("output")
///|
let files : Array[String] = []
///|
let spec : Array[(String, String, Spec, String)] = [
("--verbose", "-v", Set(verbose), "enable verbose message"),
("--output", "-o", Set_string(output), "output file name"),
]
///|
let usage =
#| Simple CLI tool
#| usage:
#| mytool [options] <file1> [<file2>] ... -o <output>
#|
///|
test {
let argv = ["-o", "out.mbt", "file1", "file2", "--verbose"]
parse(spec, file => files.push(file), usage, argv)
inspect(verbose.val, content="true")
inspect(output.val, content="out.mbt")
inspect(files[0], content="file1")
inspect(files[1], content="file2")
}#help options
ArgParser will automatically generate --help and -h options.
///|
test {
let argv = ["--help"]
parse(spec, file => files.push(file), usage, argv) catch {
// errors raised from callbacks
@ArgParser.ErrorMsg(msg) => println(msg)
// errors raised from callbacks
e => println(e)
}
}#Related Libraries
Looking for more powerful CLI tool? Check out clap.
#Spec
pub(all) enum Spec {
Unit(() -> Unit raise)
String((String) -> Unit raise)
Set_string(Ref[String])
Set(Ref[Bool])
Clear(Ref[Bool])
}Matched option handler that used to interpret options.
Unit - handle with callback
String - handle associated value with callback
Set_string - set option to associated value
Set - set reference to true
Clear - set reference to false
#parse
Parse argument list for CLI tools
Match OptionName or LongOptionName then interpret with Spec and
use Description to generate -h or --help options message.
Parameters
- speclist: (LongOptionName, OptionName, Spec, Description) of Array
- rest: rest arguments handler
- usage_msg: synopsis usage
- argv: input argument list
Exception
If the input arguments contains help option or invalid input, the parse
function will raise ErrorMsg error.
Source Files
command line argument parser
utilscommand lineparser
0.2.1
Apache-2.0
Updated 6 months ago
102K downloadsDependencies
- Yoorkin/trie0.2.10