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54 lines
2.0 KiB
Bash
54 lines
2.0 KiB
Bash
function calculate_hash_for_all_files_in_dirs() {
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declare -a dirs_to_hash=("$@")
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declare -a files_to_hash=()
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for dir in "${dirs_to_hash[@]}"; do
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# skip if dir doesn't exist...
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if [[ ! -d "${dir}" ]]; then
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display_alert "calculate_hash_for_all_files_in_dirs" "skipping non-existent dir \"${dir}\"" "warn"
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continue
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fi
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declare found_files="no"
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# shellcheck disable=SC2044 # lets expand... # -L: follow symlinks
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for file in $(find -L "${dir}" -type f); do
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files_to_hash+=("${file}")
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found_files="yes"
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done
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if [[ "${found_files}" == "no" ]]; then
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display_alert "calculate_hash_for_all_files_in_dirs" "empty dir \"${dir}\"" "debug"
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fi
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done
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#display_alert "calculate_hash_for_all_files_in_dirs" "files_to_hash_sorted: ${#files_to_hash_sorted[@]}" "warn"
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#display_alert "calculate_hash_for_all_files_in_dirs" "files_to_hash_sorted: ${files_to_hash_sorted[*]}" "warn"
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calculate_hash_for_files "${files_to_hash[@]}"
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}
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function calculate_hash_for_files() {
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hash_files="undetermined" # outer scope
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# relativize the files to SRC
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declare -a files_to_hash=("$@")
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declare -a files_to_hash_relativized=()
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for file in "${files_to_hash[@]}"; do
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# remove the SRC/ from the file name
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file="${file#${SRC}/}"
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files_to_hash_relativized+=("${file}")
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done
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# sort the array files_to_hash; use sort and readfile
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declare -a files_to_hash_sorted
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mapfile -t files_to_hash_sorted < <(for one in "${files_to_hash_relativized[@]}"; do echo "${one}"; done | LC_ALL=C sort -h) # "human" sorting
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display_alert "calculate_hash_for_files:" "files_to_hash_sorted: ${files_to_hash_sorted[*]}" "debug"
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declare full_hash
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full_hash="$(cd "${SRC}" && sha256sum "${files_to_hash_sorted[@]}")"
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hash_files="$(echo "${full_hash}" | sha256sum | cut -d' ' -f1)" # hash of hashes
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hash_files="${hash_files:0:16}" # shorten it to 16 characters
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if [[ "${SHOW_DEBUG}" == "yes" ]]; then
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display_alert "Hash for files:" "$hash_files" "debug"
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display_alert "Full hash input for files:" "\n${full_hash}\n" "debug"
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fi
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}
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