oliosource

#!/bin/sh
# =============================================================================
#  OlioSource
# =============================================================================
# -----------------------------------------------------------------------------
#  Constants
# -----------------------------------------------------------------------------
FAILURE=1
PATH_DIR_TARGET="$(cd "$(dirname "$1}")" && pwd)"
NAME_FILE_TARGET="$(basename "$1")"
PATH_FILE_TARGET="${PATH_DIR_TARGET}/${NAME_FILE_TARGET}"

# -----------------------------------------------------------------------------
#  Setup
# -----------------------------------------------------------------------------
# Temporary move to the target file directory
oldPathReturn="$(pwd)"
cd "$PATH_DIR_TARGET" || {
    echo >&2 "No such directory. Path: ${PATH_DIR_TARGET}"

    exit $FAILURE
}
trap 'cd "$oldPathReturn"' 0

# -----------------------------------------------------------------------------
#  Functions
# -----------------------------------------------------------------------------
excludeDisableComment() {
    while IFS= read -r line; do
        echo "${line}" | grep -v "^# shellcheck disable=SC1091"
    done
}

excludeShebang() {
    while IFS= read -r line; do
        echo "$line" | grep -v "^#!"
    done
}

isLineSourced() {
    echo "$1" | grep -E '(\.|source)\s+.+' 1>/dev/null 2>/dev/null
}

traceLines() {
    while IFS= read -r line; do
        if (isLineSourced "$line"); then
            file="$(echo "$line" | cut -d' ' -f2)"
            excludeShebang <"$file"
        else
            echo "$line"
        fi
    done <"$1"
}

# -----------------------------------------------------------------------------
#  Main
# -----------------------------------------------------------------------------
result=$(traceLines "$PATH_FILE_TARGET")
result=$(echo "$result" | excludeDisableComment)

if type shfmt 2>/dev/null 1>/dev/null; then
    echo "$result" | shfmt -

    exit $?
fi

echo "$result"