Fixing shellcheck errors and prepare for build.sh
This commit is contained in:
97
rdlink.sh
97
rdlink.sh
@@ -16,12 +16,33 @@ set -o pipefail
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LOG_LEVEL="${LOG_LEVEL:-1}" # 7 = debug -> 0 = emergency
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function rl::log () {
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local log_level="${1:-${LOG_LEVEL}}"
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shift
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# all remaining arguments are to be printed
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local log_line=""
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while IFS=$'\n' read -r log_line; do
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printf "%s [%9s] %s\n" "$(date -u +"%Y-%m-%d %H:%M:%S UTC")" "${log_level}" "${log_line}" 1>&2
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done <<< "${@:-}"
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}
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emergency() { rl::log emergency "${@}"; exit 1; }
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alarm() { [[ "${LOG_LEVEL:-0}" -ge 1 ]] && rl::log alert "${@}"; true; }
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critical() { [[ "${LOG_LEVEL:-0}" -ge 2 ]] && rl::log critical "${@}"; true; }
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error() { [[ "${LOG_LEVEL:-0}" -ge 3 ]] && rl::log error "${@}"; true; }
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warning() { [[ "${LOG_LEVEL:-0}" -ge 4 ]] && rl::log warning "${@}"; true; }
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notice() { [[ "${LOG_LEVEL:-0}" -ge 5 ]] && rl::log notice "${@}"; true; }
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info() { [[ "${LOG_LEVEL:-0}" -ge 6 ]] && rl::log info "${@}"; true; }
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debug() { [[ "${LOG_LEVEL:-0}" -ge 7 ]] && rl::log debug "${@}"; true; }
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msg() { echo "$@"; true; }
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### Script
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rl::rdlink() {
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local subject=
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local work=
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local resolved=0
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info "Processing: $@"
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info "Processing: $*"
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info " with pwd: $(pwd)"
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subject="$(rl::cleanpath "${1:-}")" || true
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@@ -29,8 +50,8 @@ rl::rdlink() {
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# Follow multiple symlinks
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while subject="$(rl::quicklink "${subject}")" ; do
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# A link was resolved at least once
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info "rl::rdlink - Link found: $subject"
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resolved=1
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:
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info " rl::rdlink - Link found: $subject"
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done
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# Special cases handling
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@@ -39,7 +60,7 @@ rl::rdlink() {
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# current user has no permission to access the link itself
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# (e.g. /proc/**/cwd)
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if [ -L "${subject}" ] ; then
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info "rl::rdlink exit - can't access link ${subject}"
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info " rl::rdlink exit - can't access link ${subject}"
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printf "\n"
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return 1
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fi
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@@ -47,19 +68,14 @@ rl::rdlink() {
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# Empty output if (dirname $subject) is not a valid path
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if ! work="$(rl::canon "${subject}")" ; then
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# Special: Links resolved to something like: /proc/2267178/fd/pipe:[22306727]
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# are not existing files but `readlink -f` prints result anyway
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# Printing result if a link was resolved at least once
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#if (( ! resolved )); then
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info "rl::rdlink exit - invalid path ${work}"
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info " rl::rdlink exit - invalid path ${work}"
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printf "\n"
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return 1
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#fi
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else
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subject="${work}"
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fi
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printf "${subject}\n"
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printf "%s\n" "${subject}"
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}
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rl::quicklink() {
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@@ -70,19 +86,19 @@ rl::quicklink() {
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# Check if current candidate is a symlink
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if ! subject=$(readlink -- "${1:-}"); then
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printf -- "${1:-}\n"
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printf -- "%s\n" "${1:-}"
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return 1
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fi
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info " - symlink ${1} -> ${subject}"
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info " rl::quicklink symlink ${1} -> ${subject}"
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# relative symlink target; prepend its parent direcotry
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if [[ "${subject}" != "/"* ]]; then
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work="$(rl::canon "$(dirname -- "${1:-}")")"
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subject="${work}/${subject}"
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info " - relative link resolved: ${subject}"
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info " rl::quicklink relative link resolved: ${subject}"
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fi
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printf "${subject}\n"
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printf "%s\n" "${subject}"
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return 0
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}
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@@ -103,7 +119,7 @@ rl::canon() {
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# e.g. $(readlink /proc/self/root) == "/"
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# $(cd /proc/self/root/mnt && pwd -P) == "//mnt"
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subject="$(rl::normalize "${work}")"
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info "rl::canon valid directory: ${subject}"
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info " rl::canon valid directory: ${subject}"
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run=0
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elif work="$(cd "$(dirname -- "${start}")" >/dev/null 2>&1 && pwd -P)" ; then
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bname="$(basename -- "${start}")"
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@@ -112,12 +128,12 @@ rl::canon() {
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[[ "${work}" == "/" ]] && work=
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subject="${work}${bname:+"/${bname}"}"
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info "rl::canon valid parent: ${subject}"
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info " rl::canon valid parent: ${subject}"
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# Special: Succeed with valid element after second run; see special below
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# e.g. /root/.
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# * /root is valid but not accessible
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if (( retval )) && [ -e "${subject}" ] ;then
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info "rl::canon valid element"
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info " rl::canon valid element"
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retval=0
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fi
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run=0
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@@ -129,18 +145,18 @@ rl::canon() {
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# * resolves to pwd but fails by readlink -f
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work="$(rl::normalize "${start}")"
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if [[ "${work}" != "${start}" ]] ; then
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info "rl::canon retry with: ${work}"
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info " rl::canon retry with: ${work}"
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start="${work}"
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retval=1
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continue
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fi
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info "rl::canon invalid path: ${work}"
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info " rl::canon invalid path: ${work}"
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subject="${work}"
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run=0 && retval=1
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fi
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done
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printf -- "${subject}\n"
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printf -- "%s\n" "${subject}"
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return ${retval}
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}
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@@ -156,8 +172,8 @@ rl::cleanpath() {
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work="${work//'//'/'/'}"
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done
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info "rl::cleanpath result: ${work}"
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printf -- "${work}\n"
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info " rl::cleanpath result: ${work}"
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printf -- "%s\n" "${work}"
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}
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rl::normalize() {
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@@ -187,8 +203,8 @@ rl::normalize() {
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work="${BASH_REMATCH[1]}"
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fi
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info "rl::normalize result: ${work}"
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printf -- "${work}\n"
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info " rl::normalize result: ${work}"
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printf -- "%s\n" "${work}"
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}
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rl::main() {
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@@ -218,31 +234,9 @@ rl::main() {
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done
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}
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function rl::log () {
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local log_level="${1:-${LOG_LEVEL}}"
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shift
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# all remaining arguments are to be printed
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local log_line=""
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while IFS=$'\n' read -r log_line; do
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printf "%s [%9s] %s\n" "$(date -u +"%Y-%m-%d %H:%M:%S UTC")" "${log_level}" "${log_line}" 1>&2
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done <<< "${@:-}"
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}
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emergency() { rl::log emergency "${@}"; exit 1; }
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alarm() { [[ "${LOG_LEVEL:-0}" -ge 1 ]] && rl::log alert "${@}"; true; }
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critical() { [[ "${LOG_LEVEL:-0}" -ge 2 ]] && rl::log critical "${@}"; true; }
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error() { [[ "${LOG_LEVEL:-0}" -ge 3 ]] && rl::log error "${@}"; true; }
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warning() { [[ "${LOG_LEVEL:-0}" -ge 4 ]] && rl::log warning "${@}"; true; }
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notice() { [[ "${LOG_LEVEL:-0}" -ge 5 ]] && rl::log notice "${@}"; true; }
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info() { [[ "${LOG_LEVEL:-0}" -ge 6 ]] && rl::log info "${@}"; true; }
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debug() { [[ "${LOG_LEVEL:-0}" -ge 7 ]] && rl::log debug "${@}"; true; }
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msg() { echo "$@"; true; }
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# Provide as function to be called when sourced
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rdlink() {
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rl::rdlink "$@"
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rl::main "$@"
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}
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### Check if script is _sourced
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@@ -251,7 +245,8 @@ _sourced=0
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if [ -n "${ZSH_EVAL_CONTEXT:-}" ]; then
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case ${ZSH_EVAL_CONTEXT:-} in *:file) _sourced=1;; esac
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elif [ -n "${KSH_VERSION:-}" ]; then
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[ "$(cd $(dirname -- $0) && pwd -P)/$(basename -- $0)" != "$(cd $(dirname -- ${.sh.file}) && pwd -P)/$(basename -- ${.sh.file})" ] && _sourced=1
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[ "$(cd "$(dirname -- "$0")" && pwd -P)/$(basename -- "$0")" \
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!= "$(cd "$(dirname -- "${.sh.file}")" && pwd -P)/$(basename -- "${.sh.file}")" ] && _sourced=1
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elif [ -n "${BASH_VERSION:-}" ]; then
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(return 0 2>/dev/null) && _sourced=1
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else # All other shells: examine $0 for known shell binary filenames
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@@ -264,3 +259,5 @@ if (( ! _sourced )); then
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rl::main "$@"
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fi
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### Script EOF
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