coreutils/util/show-utils.sh

#!/usr/bin/env bash

# spell-checker:ignore (shell) OSTYPE
# spell-checker:ignore (utils) cksum coreutils dircolors mkdir mktemp printenv printf readlink realpath grealpath rmdir shuf tsort unexpand
# spell-checker:ignore (jq) deps startswith

# Use GNU version for realpath on *BSD
REALPATH=$(command -v grealpath||command -v realpath)

ME="${0}"
ME_dir="$(dirname -- "${ME}")"
ME_parent_dir="$(dirname -- "${ME_dir}")"
ME_parent_dir_abs="$("${REALPATH}" -mP -- "${ME_parent_dir}" || "${REALPATH}" -- "${ME_parent_dir}")"

# refs: <https://forge.rust-lang.org/release/platform-support.html> , <https://docs.rs/platforms/0.2.1/platforms/platform/tier1/index.html>

# default utility list
default_utils=$(sed -n '/feat_common_core = \[/,/\]/p' Cargo.toml | sed '1d' |tr -d '],"\n') # $(sed -n '/feat_Tier1 = \[/,/\]/p' Cargo.toml | sed '1d;2d' |tr -d '],"\n') too?

project_main_dir="${ME_parent_dir_abs}"
# printf 'project_main_dir="%s"\n' "${project_main_dir}"
cd "${project_main_dir}" &&

    # `jq` available?
    if ! jq --version 1>/dev/null 2>&1; then
        echo "WARN: missing \`jq\` (install with \`sudo apt install jq\`); falling back to default (only fully cross-platform) utility list" 1>&2
        echo "$default_utils"
    else
    # Find 'coreutils' id with regex
    # with cargo v1.76.0, id = "coreutils 0.0.26 (path+file://<coreutils local directory>)"
    # with cargo >= v1.77.0
    # - if local path != '<...>/coreutils' id = "path+file://<coreutils local directory>#coreutils@0.0.26"
    # - if local path == '<...>/coreutils' id = "path+file://<parent directory>/coreutils#0.0.26"
        cargo metadata "$@" --format-version 1 | jq -r '[.resolve.nodes[] | select(.id|match(".*coreutils[ |@|#]\\d+\\.\\d+\\.\\d+")) | .deps[] | select(.pkg|match("uu_")) | .name | sub("^uu_"; "")] | sort | join(" ")'
    fi