bump msrv to 1.54.0

this entails:
- updating clap to the latest version (3.0.0-beta.4)
- removing the version restrictions on smartstring and bitflags
- updating various config files to match the new MSRV
- constifying a function that contained a match statement, and therefore couldn't be made const until now
- updating the all-important readme badge

.gitlab-ci.yml

@@ -81,15 +81,14 @@ clippy:
 cleanup-stable:
   extends: .cargo-cleanup
 
-# commented out because cargo-sweep no longer works on our MSRV
+cleanup-msrv:
-#cleanup-msrv:
+  extends: cleanup-stable
-#  extends: cleanup-stable
+  image: "rust:1.54.0"
-#  image: "rust:1.43.0"
+  cache:
-#  cache:
+    key: msrv
-#    key: msrv
+    paths:
-#    paths:
+      - target
-#      - target
+      - .cargo
-#      - .cargo
 
 cleanup-nightly:
   extends: cleanup-stable
@@ -107,8 +106,8 @@ build-base-stable:
 
 build-base-msrv:
   extends: build-base-stable
-#  needs: ["cleanup-msrv"]
+  needs: ["cleanup-msrv"]
-  image: "rust:1.43.0"
+  image: "rust:1.54.0"
   cache:
     key: msrv
     paths:
@@ -134,7 +133,7 @@ build-stable:
 build-msrv:
   extends: build-stable
   needs: ["build-base-msrv"]
-  image: "rust:1.43.0"
+  image: "rust:1.54.0"
   cache:
     key: msrv
     paths:
@@ -159,7 +158,7 @@ test-stable:
 
 test-msrv:
   extends: test-stable
-  image: "rust:1.43.0"
+  image: "rust:1.54.0"
   needs: ["build-msrv"]
   cache:
     key: msrv

CHANGELOG.md

@@ -5,6 +5,9 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## Unreleased
+## Changed
+- MSRV is now 1.54.0
+  - A few dependencies have been updated, most notably [`clap`]
 ### Added
 - AIFF (Audio Interchange File Format, a PCM audio format like WAV) detection to [`infer`]
 - `--version` output now includes the (short) hash of the git commit fif was built from

Cargo.lock

@@ -27,9 +27,9 @@ checksum = "cdb031dd78e28731d87d56cc8ffef4a8f36ca26c38fe2de700543e627f8a464a"
 
 [[package]]
 name = "bitflags"
-version = "1.2.1"
+version = "1.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cf1de2fe8c75bc145a2f577add951f8134889b4795d47466a54a5c846d691693"
+checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
 
 [[package]]
 name = "byteorder"
@@ -65,9 +65,9 @@ checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
 [[package]]
 name = "clap"
-version = "3.0.0-beta.2"
+version = "3.0.0-beta.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4bd1061998a501ee7d4b6d449020df3266ca3124b941ec56cf2005c3779ca142"
+checksum = "fcd70aa5597dbc42f7217a543f9ef2768b2ef823ba29036072d30e1d88e98406"
 dependencies = [
  "atty",
  "bitflags",
@@ -78,15 +78,14 @@ dependencies = [
  "termcolor",
  "terminal_size",
  "textwrap",
- "unicode-width",
  "vec_map",
 ]
 
 [[package]]
 name = "clap_derive"
-version = "3.0.0-beta.2"
+version = "3.0.0-beta.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "370f715b81112975b1b69db93e0b56ea4cd4e5002ac43b2da8474106a54096a1"
+checksum = "0b5bb0d655624a0b8770d1c178fb8ffcb1f91cc722cb08f451e3dc72465421ac"
 dependencies = [
  "heck",
  "proc-macro-error",
@@ -187,11 +186,9 @@ checksum = "de853764b47027c2e862a995c34978ffa63c1501f2e15f987ba11bd4f9bba193"
 name = "fif"
 version = "0.3.6"
 dependencies = [
- "bitflags",
  "cached",
  "cfg-if",
  "clap",
- "clap_derive",
  "env_logger",
  "exitcode",
  "infer",
@@ -388,9 +385,9 @@ checksum = "692fcb63b64b1758029e0a96ee63e049ce8c5948587f2f7208df04625e5f6b56"
 
 [[package]]
 name = "os_str_bytes"
-version = "2.4.0"
+version = "3.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "afb2e1c3ee07430c2cf76151675e583e0f19985fa6efae47d6848a3e2c824f85"
+checksum = "6acbef58a60fe69ab50510a55bc8cdd4d6cf2283d27ad338f54cb52747a9cf2d"
 
 [[package]]
 name = "phf"
@@ -632,9 +629,9 @@ checksum = "533494a8f9b724d33625ab53c6c4800f7cc445895924a8ef649222dcb76e938b"
 
 [[package]]
 name = "smartstring"
-version = "0.2.7"
+version = "0.2.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "29620fe111ceaba7a50fd806b5f44c1ef44a697a739f6677a4464c7ea8685997"
+checksum = "31aa6a31c0c2b21327ce875f7e8952322acfcfd0c27569a6e18a647281352c9b"
 dependencies = [
  "static_assertions",
 ]
@@ -701,12 +698,11 @@ dependencies = [
 
 [[package]]
 name = "textwrap"
-version = "0.12.1"
+version = "0.14.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "203008d98caf094106cfaba70acfed15e18ed3ddb7d94e49baec153a2b462789"
+checksum = "0066c8d12af8b5acd21e00547c3797fde4e8677254a7ee429176ccebbe93dd80"
 dependencies = [
  "terminal_size",
- "unicode-width",
 ]
 
 [[package]]
@@ -744,12 +740,6 @@ version = "1.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8895849a949e7845e06bd6dc1aa51731a103c42707010a5b591c0038fb73385b"
 
-[[package]]
-name = "unicode-width"
-version = "0.1.9"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3ed742d4ea2bd1176e236172c8429aaf54486e7ac098db29ffe6529e0ce50973"
-
 [[package]]
 name = "unicode-xid"
 version = "0.2.2"

Cargo.toml

@@ -5,7 +5,7 @@ version = "0.3.6"
 authors = ["Lynnesbian <lynne@bune.city>"]
 edition = "2018"
 license = "GPL-3.0-or-later"
-rust-version = "1.43.0" # cached breaks on 1.42.0, i think it needs https://github.com/rust-lang/rust/pull/67642/
+rust-version = "1.54.0"
 repository = "https://gitlab.com/Lynnesbian/fif"
 readme = "README.md"
 keywords = ["mime", "mimetype", "utilities", "tools"]
@@ -37,7 +37,6 @@ cfg-if = "1.0.0"
 itertools = "0.10.0"
 serde = { version = "1.0", features = ["derive"], optional = true }
 serde_json = { version = "1.0", optional = true }
-bitflags = "~1.2.1" # 1.3+ requires Rust >= 1.46
 
 [target.'cfg(not(unix))'.dependencies]
 xdg-mime = { version = "0.3.3", optional = true }
@@ -49,27 +48,17 @@ infer = { version = "0.5.0", optional = true }
 
 [target.'cfg(not(all(target_endian = "big", target_pointer_width = "32")))'.dependencies]
 # the seemingly weird target constraint here is due to this:
-# https://github.com/bodil/smartstring/blob/v0.2.7/src/config.rs#L102-L104
+# https://github.com/bodil/smartstring/blob/v0.2.9/src/config.rs#L91-L93
 # essentially, smartstring is intentionally blocked from compiling on 32-bit big endian archs, so our dependency on it
 # needs to be too. otherwise, fif won't work on platforms like powerpc, even though this dependency is the only
 # blocker -- fif runs just fine on powerpc without smartstring. or at least, just fine under qemu user-mode powerpc ~u0
-
+smartstring = "0.2.9"
-# additionally, smartstring 0.2.8 requires rust >=1.46 (due to https://github.com/rust-lang/rust/issues/49146), and
-# 0.2.3 doesn't impl Display on its SmartString type.
-# so, we need at least 0.2.4 so we can println! strings, and at most 0.2.7 until we bump the MSRV to at least 1.46.
-# see https://github.com/bodil/smartstring/blob/master/CHANGELOG.md
-smartstring = "<= 0.2.7, >= 0.2.4"
 
 [dependencies.clap]
-# beta.4 requires rust >= 1.54.0 (and beta.3 was yanked)
+version = "=3.0.0-beta.4"
-version = "=3.0.0-beta.2"
 default-features = false
 features = ["wrap_help", "color", "derive", "std"]
 
-[dependencies.clap_derive]
-# without this, clap beta.2 will install clap_derive beta.4 :c
-version = "=3.0.0-beta.2"
-
 [dependencies.env_logger]
 version = "0.9.0"
 default-features = false
@@ -94,4 +83,4 @@ opt-level = 3
 opt-level = 3
 
 [package.metadata]
-msrv = "1.43.0"
+msrv = "1.54.0"

README.md

@@ -7,7 +7,7 @@
 
 [![Version](https://img.shields.io/crates/v/fif.svg?logo=rust&style=flat-square)
 ](https://crates.io/crates/fif)
-[![Minimum Supported Rust Version](https://img.shields.io/badge/msrv-1.43.0-orange?logo=rust&style=flat-square)
+[![Minimum Supported Rust Version](https://img.shields.io/badge/msrv-1.54.0-orange?logo=rust&style=flat-square)
 ](https://gitlab.com/Lynnesbian/fif/-/blob/master/README.md#version-policy)
 [![License](https://img.shields.io/crates/l/fif.svg?style=flat-square)
 ](https://gitlab.com/Lynnesbian/fif/-/blob/master/LICENSE)

clippy.toml

@@ -1,2 +1,3 @@
 # avoid-breaking-exported-api = false # only available on nightly for now
-cognitive-complexity-threshold = 15
+cognitive-complexity-threshold = 15
+msrv = "1.54.0"

src/parameters.rs

@@ -3,7 +3,7 @@
 use crate::utils::{clap_long_version, clap_version};
 use crate::String as StringType;
 use cfg_if::cfg_if;
-use clap::{AppSettings, Clap};
+use clap::{AppSettings, ArgEnum, Clap};
 use std::collections::BTreeSet;
 use std::path::PathBuf;
 
@@ -15,7 +15,7 @@ cfg_if! {
 	}
 }
 
-#[derive(Clap, PartialEq, Debug)]
+#[derive(ArgEnum, PartialEq, Debug)]
 pub enum OutputFormat {
 	/// A Bourne shell compatible script.
 	#[clap(alias = "shell", alias = "bash")]
@@ -52,7 +52,7 @@ pub struct Parameters {
 	/// Only examine files with these extensions.
 	/// Multiple extensions can be specified by either using the flag multiple times (`-e jpg -e png -e gif`), or by
 	/// separating them with commas (`-e jpg,png,gif`).
-	#[clap(short, long, use_delimiter = true, require_delimiter = true, value_name = "ext", validator = lowercase_exts)]
+	#[clap(short, long, use_delimiter = true, require_delimiter = true, value_name = "ext", takes_value = true, validator = validate_exts)]
 	pub exts: Option<Vec<StringType>>,
 
 	/// Use these preset lists of extensions as the search filter (comma-separated list).
@@ -70,7 +70,7 @@ pub struct Parameters {
 
 	/// Don't scan files with these extensions.
 	/// This option takes precedence over extensions specified with `-e` or `-E`.
-	#[clap(short = 'x', long, use_delimiter = true, require_delimiter = true, value_name = "ext", validator = lowercase_exts)]
+	#[clap(short = 'x', long, require_delimiter = true, use_delimiter = true, value_name = "ext", validator = validate_exts)]
 	pub exclude: Option<Vec<StringType>>,
 
 	/// Exclude files using a preset list of extensions.
@@ -133,7 +133,10 @@ pub struct Parameters {
 	pub ignore_unknown_exts: bool,
 }
 
-fn lowercase_exts(exts: &str) -> Result<(), String> {
+fn validate_exts(exts: &str) -> Result<(), String> {
+	if exts.is_empty() {
+		return Err(String::from("Cannot specify empty extensions"));
+	}
 	// TODO: i would much rather accept uppercase exts and convert them to lowercase than just rejecting lowercase exts...
 	if exts.to_lowercase() != exts {
 		return Err(String::from("Supplied extensions must be lowercase"));
@@ -224,10 +227,7 @@ impl Parameters {
 		}
 	}
 
-	pub fn default_verbosity(&self) -> log::LevelFilter {
+	pub const fn default_verbosity(&self) -> log::LevelFilter {
-		#![allow(clippy::missing_const_for_fn)]
-		// match was not permitted inside const functions until 1.46
-
 		use log::LevelFilter;
 
 		match self.quiet {
@@ -246,7 +246,7 @@ impl Parameters {
 }
 
 /// Sets of extensions for use with [Parameter](crate::parameters::Parameters)'s `-E` flag.
-#[derive(Clap, PartialEq, Debug)]
+#[derive(ArgEnum, PartialEq, Debug)]
 pub enum ExtensionSet {
 	/// Extensions used for image file formats, such as `png`, `jpeg`, `webp`, etc.
 	Images,