Crate dynamo_truthy 

Canonical truthy/falsy flag parsing for Dynamo.

Single owner of the boolean vocabulary accepted from user-supplied configuration (environment variables, HTTP headers, config values): truthy = 1 | true | on | yes, falsy = 0 | false | off | no or empty, case-insensitive, surrounding whitespace ignored.

dynamo_runtime::config re-exports these helpers and is the canonical import path for crates that already depend on dynamo-runtime. Crates that cannot (e.g. dynamo-memory, dynamo-kv-router, dynamo-mocker) depend on this crate directly. Do not hand-roll new bool parsers — a divergent accepted set means SOMEFLAG=on works for one flag and silently not another. tests/no_bool_parse_forks.rs greps the workspace for forks.

Functions

env_is_falsey

Check if an environment variable is set to a falsey value (including set but empty). Unset (or non-unicode) variables are not falsey.

env_is_truthy

Check if an environment variable is set to a truthy value. Unset (or non-unicode) variables are not truthy.

is_falsey

Check if a string is falsey: 0 | false | off | no or empty, case-insensitive, surrounding whitespace ignored.

is_truthy

Check if a string is truthy: 1 | true | on | yes, case-insensitive, surrounding whitespace ignored. Everything else is not truthy.

parse_bool

Parse a string as a boolean value, returning an error if it is neither truthy nor falsey.

parse_bool_opt

Tri-state parse for call sites that preserve their own default unless the value is a deliberate boolean choice.