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Change Log

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog and this project adheres to Semantic Versioning.

Unreleased

0.14.0 - 2024-02-01

This is a maintenance release, mostly to get some dependency updates out, but also with some fixes and changes that have piled up over a rather long time.

Features

  • #100 Fix #99: expose file::source::FileSource
  • #318 Add Value::origin()
  • #379 Add clone to builder state types
  • #381 env: add a 'convert_case' field to ease dealing with kebab-case
  • #402 Gate async-traits behind a feature
  • #413 Attach key to type error generated from Config::get_()
  • #480 Hide and deprecate AsyncConfigBuilder

Fixes

  • #306 fix: dot in config name
  • #334 errors: clarify names of integer types
  • #343 fix yaml to parse int keys
  • #353 Use TryInto for more permissive deserialization for integers
  • #354 Fix uppercase lowercase isses
  • #374 Fix FIXME in de.rs and value.rs
  • #395 Fix: Do not use deprecated function
  • #429 Make the parse list key to lowercase when insert the keys
  • #465 Fix nested arrays (by reworking array handling)
  • #481 Fix docs warnings

Dependency updates

  • #271 Update warp requirement from =0.3.1 to =0.3.2
  • #316 test: Adopt test-env to fix random test failure
  • #335 Update MSRV: 1.56.0 -> 1.56.1
  • #350 Bump actions/checkout from 2.4.0 to 3.0.2
  • #367 Update ron requirement from 0.7 to 0.8
  • #373 Update notify (4.0.0 -> 5.0.0)
  • #375 Update temp-env requirement from 0.2.0 to 0.3.0
  • #378 Update warp requirement from =0.3.2 to =0.3.3
  • #382 Bump actions/checkout from 3.0.2 to 3.1.0
  • #389 Update MSRV: 1.56.1 -> 1.59.0
  • #403 Bump actions/checkout from 3.1.0 to 3.2.0
  • #411 Bump actions/checkout from 3.2.0 to 3.3.0
  • #420 Update MSRV: 1.59.0 -> 1.60.0
  • #421 Update toml requirement from 0.5 to 0.7
  • #422 Update MSRV in cron workflow
  • #425 Bump actions/checkout from 3.3.0 to 3.4.0
  • #426 Update MSRV: 1.60.0 -> 1.64.0
  • #427 Bump actions/checkout from 3.4.0 to 3.5.0
  • #430 Update warp requirement from =0.3.3 to =0.3.4
  • #433 Bump actions/checkout from 3.5.0 to 3.5.1
  • #434 Bump actions/checkout from 3.5.1 to 3.5.2
  • #436 Update warp requirement from =0.3.4 to =0.3.5
  • #437 Update rust-ini requirement from 0.18 to 0.19
  • #438 Update notify requirement from ^5.0.0 to ^6.0.0
  • #440 Bump actions/checkout from 3.5.2 to 3.5.3
  • #441 Update indexmap requirement from 1.7.0 to 2.0.0
  • #451 Bump actions/checkout from 3.5.3 to 3.6.0
  • #453 Bump actions/checkout from 3.6.0 to 4.0.0
  • #455 MSRV: 1.64.0 -> 1.66.0
  • #456 Update toml requirement from 0.7 to 0.8
  • #458 Update MSRV in cron job
  • #459 Bump actions/checkout from 4.0.0 to 4.1.0
  • #462 Update warp requirement from =0.3.5 to =0.3.6
  • #477 Bump actions/checkout from 4.1.0 to 4.1.1
  • #483 Update MSRV: 1.66.0 -> 1.70.0
  • #503 Bump actions/setup-python from 4 to 5

Misc

  • #188 Add test for log::Level deserialization
  • #274 move 'must_use' attribute to struct for 'builder' types
  • #283 Add cron job
  • #299 docs(builder): fix typo in doc comment
  • #344 Fix clippy: Derive Eq as well
  • #347 Fix clippy: use first() instead of get(0)
  • #348 actions: Remove "minimal" setting, as workflow does not support this key
  • #356 refactoring deserialize-any in config
  • #359 Add test to deserialize unsigned int
  • #360 Duplicate test for type conversion with unsigned int
  • #362 Run clippy only on MSRV
  • #363 Backport CHANGELOG entry for 0.13.2
  • #388 Add documentation to File required setter
  • #392 Add simple example using lazy_static
  • #393 More clippy fixes
  • #396 Replace actions rs
  • #401 Backport changelog
  • #404 Replace fixupmerge with gitlint
  • #406 Fix clippy: Remove unnecessary cast
  • #410 Copy member docs to builder functions
  • #416 Replace actions-rs with run scripts
  • #423 Fix clippy: Remove needless borrowed reference
  • #445 Update license field following SPDX 2.1 license expression standard
  • #460 Use weak features for preserve_order
  • #469 chore: Use a common method in parsers to check root is a table
  • #471 Clippy exact toolchains
  • #479 docs: Example for conditionally loading sources
  • #485 Add DCO
  • #488 Unify deser impl (redux)
  • #489 deserialize: strings: Introduce string_serialize_via_display macro
  • #507 Check external types
  • #511 Fix: cargo-check-external-types must use nightly 2023-10-10

0.13.3 - 2022-12-04

Please note that we had to update the MSRV for this crate from 1.56.0 to 1.59.0 for this patch release being possible, because a transitive dependency did update its MSRV.

0.13.2 - 2022-08-02

  • Backport of #316 to be testing with temp_env. The backport was necessary to be able to backport the next change. This change shouldn't be user-visible.
  • Backport of #353 to use TryInto for more permissive deserialization of integers
  • Backport of commit 518a3cafa1e62ba7405709e5c508247e328e0a18 from #362 to fix tests

0.13.1 - 2022-04-13

  • typo in doc comment for ConfigBuilder #299
  • dot in config file name handling fixed #306

0.13.0 - 2022-04-03

  • Prefix-Seperator support was added #292
  • Environment lists can now be parsed #255
  • Setting an overwrite from an Option was added #303
  • Option to keep the prefix from an environment variable was added #298
  • Some small doc/CI fixes #307, #309
  • MSRV was updated to 1.56.0 #304
  • Dependencies were updated #289, #301

0.12.0 - 2022-02-10

Format support changes in this version

  • HJSON support was removed #230
  • JSON5 format support #206
  • RON format support #202

Other noteworthy changes

  • A new ConfigBuilder interface for building configuration objects #196
  • Asynchronous sources #207
  • Custom ENV separators are now supported #185
  • Loads of dependency updates and bugfixes of course
  • Preserved map order #217
  • Support for parsing numbers from the environment #137
  • Support for unsigned integers #178
  • Format trait for (custom) file formats #219

Deprecated

  • Environment::new() - see #235
  • Large parts of the Config interface - see #196
    • Config::merge()
    • Config::with_merged()
    • Config::refresh()
    • Config::set_default()
    • Config::set()
    • Config::set_once()
    • Config::deserialize()

0.11.0 - 2021-03-17

  • The Config type got a builder-pattern with_merged() method #166.
  • A Config::set_once() function was added, to set an value that can be overwritten by Config::mergeing another configuration #172
  • serde_hjson is, if enabled, pulled in without default features. This is due to a bug in serde_hjson, see #169 for more information.
  • Testing is done on github actions #175

0.10.1 - 2019-12-07

  • Allow enums as configuration keys #119

0.10.0 - 2019-12-07

  • Remove lowercasing of keys (unless the key is coming from an environment variable).
  • Update nom to 5.x

0.9.3 - 2019-05-09

  • Support deserializing to a struct with #[serde(default)] #106

0.9.2 - 2019-01-03

  • Support reading enums from configuration. #85
  • Improvements to error path (attempting to propagate path). #89
  • Fix UB in monomorphic expansion. We weren't re-exporting dependent types. #91

0.9.1 - 2018-09-25

  • Allow Environment variable collection to ignore empty values. #78 
    // Empty env variables will not be collected
Environment::with_prefix("APP").ignore_empty(true)

0.9.0 - 2018-07-02

  • Breaking Change: Environment does not declare a separator by default.

    // 0.8.0
Environment::with_prefix("APP")

// 0.9.0
Environment::with_prefix("APP").separator("_")

  • Add support for INI. #72

  • Add support for newtype structs. #71

  • Fix bug with array set by path. #69

  • Update to nom 4. #63

0.8.0 - 2018-01-26

  • Update lazy_static and yaml_rust

0.7.1 - 2018-01-26

  • Be compatible with nom's verbose_errors feature (#50)[#50]
  • Add derive(PartialEq) for Value (#54)[#54]

0.7.0 - 2017-08-05

  • Fix conflict with serde_yaml. #39

  • Implement Source for Config.

  • Implement serde::de::Deserializer for Config. my_config.deserialize may now be called as either Deserialize::deserialize(my_config) or my_config.try_into().

  • Remove ConfigResult. The builder pattern requires either .try_into as the final step or the initial Config::new() to be bound to a slot. Errors must also be handled on each call instead of at the end of the chain.

    let mut c = Config::new();
c
    .merge(File::with_name("Settings")).unwrap()
    .merge(Environment::with_prefix("APP")).unwrap();
    let c = Config::new()
    .merge(File::with_name("Settings")).unwrap()
    .merge(Environment::with_prefix("APP")).unwrap()
    // LLVM should be smart enough to remove the actual clone operation
    // as you are cloning a temporary that is dropped at the same time
    .clone();
    let mut s: Settings = Config::new()
    .merge(File::with_name("Settings")).unwrap()
    .merge(Environment::with_prefix("APP")).unwrap()
    .try_into();

0.6.0 – 2017-06-22

  • Implement Source for Vec<T: Source> and Vec<Box<Source>>

    Config::new()
    .merge(vec![
        File::with_name("config/default"),
        File::with_name(&format!("config/{}", run_mode)),
    ])

  • Implement From<&Path> and From<PathBuf> for File

  • Remove namespace option for File

  • Add builder pattern to condense configuration

    Config::new()
    .merge(File::with_name("Settings"))
    .merge(Environment::with_prefix("APP"))
    .unwrap()

  • Parsing errors even for non required files – @Anthony25 ( #33 )

0.5.1 – 2017-06-16

  • Added config category to Cargo.toml

0.5.0 – 2017-06-16

  • config.get has been changed to take a type parameter and to deserialize into that type using serde. Old behavior (get a value variant) can be used by passing config::Value as the type parameter: my_config.get::<config::Value>(".."). Some great help here from @impowski in #25.
  • Propagate parse and type errors through the deep merge (remembering filename, line, etc.)
  • Remove directory traversal on File. This is likely temporary. I do want this behavior but I can see how it should be optional. See #35
  • Add File::with_name to get automatic file format detection instead of manual FileFormat::* – @JordiPolo
  • Case normalization #26
  • Remove many possible panics #8
  • my_config.refresh() will do a full re-read from the source so live configuration is possible with some work to watch the file

0.4.0 - 2017-02-12

  • Remove global ( config::get ) API — It's now required to create a local configuration instance with config::Config::new() first.

    If you'd like to have a global configuration instance, use lazy_static! as follows:

    use std::sync::RwLock;
use config::Config;

lazy_static! {
    static ref CONFIG: RwLock<Config> = Default::default();
}

0.3.0 - 2017-02-08

  • YAML from @tmccombs
  • Nested field retrieval
  • Deep merging of sources (was shallow)
  • config::File::from_str to parse and merge a file from a string
  • Support for retrieval of maps and slices — config::get_table and config::get_array

0.2.0 - 2017-01-29

Initial release.