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#
# Copyright (c) 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023 Lucía Andrea Illanes Albornoz <lucia@luciaillanes.de>
# set +o errexit -o noglob -o nounset is assumed.
#
#
# rtl_basename() - obtain base name from filename
# @_rfname: inout reference to filename
#
# Returns: zero (0) on success, non-zero (>0) on failure
#
rtl_basename() {
rtl_basename2 "${1}" "${1}";
};
#
# rtl_basename2() - obtain base name from filename
# @_rfname: in reference to filename
# @_rfname_out: out reference to new filename
#
# Returns: zero (0) on success, non-zero (>0) on failure
#
rtl_basename2() {
local _rb2_rfname="${1#\$}" _rb2_rfname_out="${2#\$}" \
_rb2_fname="";
eval _rb2_fname="\${${_rb2_rfname}}";
eval ${_rb2_rfname_out}='${_rb2_fname##*/}';
return 0;
};
#
# rtl_check_digest() - check digest of single file
# @_rdigest: out reference to digest of file
# @_fname: name of file to check
# @_digest_check: digest to check against
#
# Returns: zero (0) on success, non-zero (>0) on failure
#
rtl_check_digest() {
local _rcd_rdigest="${1#\$}" _rcd_fname="${2}" _rcd_digest_check="${3}" \
_rcd_digest="";
if ! [ -e "${_rcd_fname}" ]; then
return 1;
else set -- $(sha256sum "${_rcd_fname}");
_rcd_digest="${1}";
eval ${_rcd_rdigest}='${_rcd_digest}';
if [ "${_rcd_digest}" = "${_rcd_digest_check}" ]; then
return 0;
else
return 1;
fi;
fi;
};
#
# rtl_check_digest_file() - check digest of single file w/ digest file
# @_fname: name of file to check
# @_digest_check: digest to check against
# @_digest_fname: name of file containing digest
#
# Returns: zero (0) on success, non-zero (>0) on failure
#
rtl_check_digest_file() {
local _rcdf_fname="${1}" _rcdf_digest_check="${2}" _rcdf_digest_fname="${3}" \
_rcdf_digest="" _rcdf_digest_file="";
if ! [ -e "${_rcdf_digest_fname}" ]; then
return 1;
else _rcdf_digest_file="$(cat "${_rcdf_digest_fname}")";
if [ "${_rcdf_digest_file}" != "${_rcdf_digest_check}" ]\
|| ! rtl_check_digest \$_rcdf_digest "${_rcdf_fname}" \
"${_rcdf_digest_check}";
then
return 1;
else
return 0;
fi;
fi;
};
#
# rtl_check_path_vars() - check pathname variables for validity
# @_rstatus: out reference to status string
# @_vnames: list of variable names
#
# Returns: zero (0) on success, non-zero (>0) on empty or unset pathname variable or pathname variable containing whitespace characters
#
rtl_check_path_vars() {
local _rcpv_rstatus="${1#\$}" _rcpv_vnames="${2}" \
_rcpv_rc=0 _rcpv_vname="" _rcpv_vname_val="";
for _rcpv_vname in ${_rcpv_vnames}; do
rtl_get_var_unsafe \$_rcpv_vname_val "${_rcpv_vname}";
if [ "${_rcpv_vname_val:+1}" != 1 ]; then
_rcpv_rc=1;
rtl_setrstatus "${_rcpv_rstatus}" 'Error: variable \`'"${_rcpv_vname}'"' is empty or unset.';
break;
elif [ "${_rcpv_vname_val#* *}" != "${_rcpv_vname_val}" ]; then
_rcpv_rc=2;
rtl_setrstatus "${_rcpv_rstatus}" 'Error: variable \`'"${_rcpv_vname}'"' contains one or more whitespace characters.';
break;
fi;
done;
return "${_rcpv_rc}";
};
#
# rtl_dirname() - obtain directory name from filename
# @_rfname: inout reference to {file,directory} name
#
# Returns: zero (0) on success, non-zero (>0) on failure
#
rtl_dirname() {
rtl_dirname2 "${1}" "${1}";
};
#
# rtl_dirname2() - obtain directory name from filename
# @_rfname: in reference to filename
# @_rfname_out: out reference to directory name
#
# Returns: zero (0) on success, non-zero (>0) on failure
#
rtl_dirname2() {
local _rfname="${1#\$}" _rdname_out="${2#\$}" \
_rd2_dname="";
eval _rd2_dname="\${${_rfname}}";
_rd2_dname="${_rd2_dname%/*}";
case "${_rd2_dname}" in
"") _rd2_dname="."; ;;
*) while rtl_matchr "${_rd2_dname}" "*/"; do
_rd2_dname="${_rd2_dname%/}";
done; ;;
esac;
eval ${_rdname_out}='${_rd2_dname}';
return 0;
};
#
# rtl_exists_any() - check for existence of pathnames beneath directory
# @_subdir: single directory name
# @...: list of pathnames to check
#
# Returns: zero (0) on success, non-zero (>0) on failure
#
rtl_exists_any() {
local _rea_subdir="${1}"; shift;
while [ "${#}" -gt 0 ]; do
if [ -e "${_rea_subdir}/${1}" ]; then
return 0;
else
shift;
fi;
done;
return 1;
};
#
# rtl_flock_acquire() - acquire file lock
# @_fd: single file descriptor
# @_conflict_exit_code: exit code on conflict
# @_wait: wait period in seconds
#
# Returns: zero (0) on success, non-zero (>0) on failure
#
rtl_flock_acquire() {
local _rfa_fd="${1}" _rfa_conflict_exit_code="${2:-253}" _rfa_wait="${3:-3600}";
while true; do
if flock \
-E "${_rfa_conflict_exit_code}" \
-w "${_rfa_wait}" \
"${_rfa_fd}";
then
return 0;
elif [ "${?}" -eq "${_rfa_conflict_exit_code}" ]; then
continue;
else
return "${?}";
fi;
done;
};
#
# rtl_is_newer() - check if single file is newer than other single file
# @_new_fname: single name of newer file
# @_old_fname: single name of older file
#
# Returns: zero (0) if @_new_fname is newer, non-zero (>0) if @_old_fname is newer
#
rtl_is_newer() {
local _ris_new_fname="${1}" _ris_old_fname="${2}" \
_ris_new_ts="" _ris_old_ts="";
if ! [ -e "${_ris_old_fname}" ]; then
return 0;
else
_ris_new_ts="$(stat -c %Y "${_ris_new_fname}" 2>/dev/null)";
_ris_old_ts="$(stat -c %Y "${_ris_old_fname}" 2>/dev/null)";
if [ "${_ris_new_ts:-0}" -gt "${_ris_old_ts:-0}" ]; then
return 0;
else
return 1;
fi;
fi;
};
#
# rtl_patch_files() -
# @_patch_cwd: patch(1) -d directory
# @_strip_count: patch(1) strip count
# @_fn: name of function that produces patch filenames and takes the arguments @_rpatch_fname @_patch_idx @...
# @... optional arguments to pass to @_fn
#
# Returns: zero (0) on success, non-zero (>0) on failure
#
rtl_patch_files() {
local _rpf_patch_cwd="${1}" _rpf_strip_count="${2}" _rpf_fn="${3}" \
_rpf_patch_fname="" _rpf_patch_idx=0;
shift $((3 + 2));
_rpf_patch_idx=1;
while "${_rpf_fn}" \
\$_rpf_patch_fname "${_rpf_patch_idx}" \
"${@}" \
&& [ "${_rpf_patch_fname:+1}" = 1 ];
do
: $((_rpf_patch_idx += 1));
if [ -r "${_rpf_patch_fname}" ]\
&& ! patch \
-b \
-d "${_rpf_patch_cwd}" \
"-p${_rpf_strip_count}" \
< "${_rpf_patch_fname}";
then
return 1;
fi;
done;
return 0;
};
# vim:filetype=sh textwidth=0
|
