list_dependencies

#!/usr/bin/env bash
#
# Output dependencies for an extension or skin.
#
# Usage: ./list_dependencies extensions/Echo
#        ./list_dependencies skins/MinervaNeue
#
set -euo pipefail # exit on error, undefined vars, or pipe failures

# Ensure integration/config working copy exists (needed for zuul/dependencies.yaml)
. "$(dirname "$0")"/lib/ensure_config

# Show usage if no argument provided
if [ $# -eq 0 ]; then
  echo "Usage: ./list_dependencies extensions/EXTENSION or ./list_dependencies skins/SKIN"
  exit 1
fi

# Get the component from the first argument (e.g. "extensions/Echo")
component="$1"

# Strip "extensions/" prefix if present (skins/ is kept as-is)
# dependencies.yaml uses bare names for extensions but "skins/Name" for skins
if [[ "$component" == extensions/* ]]; then
  dep_key="${component#extensions/}" # remove "extensions/" prefix
else
  dep_key="$component" # keep as-is (e.g. "skins/MinervaNeue")
fi

# Parse dependencies.yaml with awk. See lib/parse_yaml_list.awk for the parsing logic.
# -v key="Name:" passes the dependency key as an awk variable
awk -v key="${dep_key}:" -f "$(dirname "$0")"/lib/parse_yaml_list.awk src/config/zuul/dependencies.yaml