OHocon

OHocon is a port of lightbend's config library.

Tutorial

create a config object

First, you must create a TypeSafeConfig object by parsing an external resource(e.g. a file).

open OHocon

(* load from a string *)
let config = TypeSafeConfigFactory.parse_string "{name:\"john\"}"

(* load from a file *)
let config = TypeSafeConfigFactory.parse_file "/tmp/application.conf"

string

open OHocon

let config = TypeSafeConfigFactory.parse_string "{name:\"john\",countries:[\"jp\", \"us\"]}"

(* get string. Throw an exception if none. *)
let _ = TypeSafeConfig.get_string "name"

(* get string as string option. *)
let _ = TypeSafeConfig.get_string_opt "name"

(* get a list of string. *)
let _ = TypeSafeConfig.get_string_list "countries"

int

open OHocon

let config = TypeSafeConfigFactory.parse_string "{ id: 1, follower_ids: [2,3,4] }"

(* get int. Throw an exception if none. *)
let _ = TypeSafeConfig.get_int "id"

(* get int as int option. *)
let _ = TypeSafeConfig.get_int_opt "id"

(* get a list of int. *)
let _ = TypeSafeConfig.get_int_list "follower_ids"

TODO

Items	Status
Comments	❌
Omit root braces	❌
Key-value separator	❌
Commas	❌
Whitespace	❌
Duplicate keys and object merging	❌
Unquoted strings	❌
Multi-line strings	❌
String value concatenation	❌
Array concatenation	❌
Object concatenation	❌
Arrays without commas	❌
Path expressions	❌
Paths as keys	❌
Substitutions	❌
Self-referential substitutions	❌
The += separator	❌
Includes	❌
Include semantics: merging	❌
Include semantics: substitution	❌
Include semantics: missing files	❌
Include semantics: file formats and extensions	❌
Include semantics: locating resources	❌
Include semantics: preventing cycles	❌
Conversion of numerically-index objects to arrays	❌