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#2966 in Parser implementations

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mico

This library implements a parser and emitter for mico (minimalistic config file format).

Format example:

Name: mico
Description: minimalistic config file format

Benefits
 - easy to read and write for everyone
 - ludicrously simple parsing logic (roughly 30 lines of code)

Parsing and emitting mico

There are two convenience functions to parse and emit:

use mico::Mapping;

// parse string
let mappings = mico::from_str("foo: bar");
assert_eq!(mappings[0].key, "foo");
assert_eq!(mappings[0].value, "bar".into());

// emit mappings
let mappings = [Mapping::new("foo", "bar")];
assert_eq!(mico::to_string(&mappings, 0), "foo: bar\n");

Notes

mico is meant for people to write simple config files very fast. There is no indentation, escaping or quoting to worry about, so any text line can simply be pasted to a mico file without further editing.

There are only two types:

  1. A mapping from key to string:

    key: value
    
  2. A mapping from key to a list of strings

    key
     - value 1
     - value 2
    

Here is a mico example:

foo: bar
  indentation is possible: but does not matter
white space  :  will be trimmed
this is a key:this: is:a :value
empty string:

empty lines: will be ignored

list ...
 - keys must not include a colon
 - items start with '-'

this is an empty list, because this line does not include a colon

this is no list because of the colon at the end of this line:
 - this is an empty list

Here is the corresponding JSON example:

[
  { "foo": "bar" },
  { "indentation is possible": "but does not matter" },
  { "white space": "will be trimmed" },
  { "this is a key": "this: is:a :value" },
  { "empty string": "" },
  { "empty lines": "will be ignored" },
  { "list ...": ["keys must not include a colon", "items start with '-'"] },
  { "This is an empty list, because this line does not include a colon": [] },
  { "This is no list because of the colon at the end of this line:": "" },
  { "- this is an empty list": [] }
]

No runtime deps