Add verbosity with -v option.
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1 changed files with 81 additions and 30 deletions
111
gitattributesdb
111
gitattributesdb
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@ -1,5 +1,5 @@
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#!/usr/bin/env bash
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# Version: 0.1.0
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# Version: 0.1.1
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# Copyright (c) 2023-2024:
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# Darren 'Tadgy' Austin <darren (at) afterdark.org.uk>
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# Licensed under the terms of the GNU General Public License version 3.
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@ -13,7 +13,7 @@ DB_EXTRA=".gitattributesdb-extra" # List of base64 encoded paths (one per line)
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# Variables.
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declare -A DB_ACLS DB_ATIMES DB_MODES DB_MTIMES DB_OWNERSHIPS DB_XATTRS
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# shellcheck disable=SC2155
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declare PLATFORM="$(uname -s)"
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declare FUNC="" PLATFORM="$(uname -s)" VERBOSE=0
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# Function to output a log/info message.
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log() {
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@ -43,6 +43,7 @@ show_help() {
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Options:
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-h|--help Display this help page.
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-v|--verbose Output path names as they are processed.
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<hook name> must be one of: 'post-checkout', 'post-merge' or 'pre-commit', which
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are the git hook names that call this hook script. See the README.md file for
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@ -87,13 +88,22 @@ add_db_entry() {
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# On Linux, we can handle ACLs and xattrs too.
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ACL="$(getfacl -cEsp -- "$1" 2>/dev/null | base64 -w 0 2>/dev/null)"
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XATTR="$(getfattr -dhe base64 -- "$1" 2>/dev/null | base64 -w 0 2>/dev/null)"
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printf "%s %s %s %s\\n" "$(printf "%s" "$1" | base64 -w 0 2>/dev/null)" "$(stat --printf '%.9Y %.9X %U:%G %.4a' -- "$1" 2>/dev/null)" "${ACL:--}" \
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"${XATTR:--}" >>"$DB_TMP" || { warn "Failed to add database entry: $1"; ERR=1; }
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if printf "%s %s %s %s\\n" "$(printf "%s" "$1" | base64 -w 0 2>/dev/null)" "$(stat --printf '%.9Y %.9X %U:%G %.4a' -- "$1" 2>/dev/null)" "${ACL:--}" \
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"${XATTR:--}" >>"$DB_TMP"; then
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(( VERBOSE == 1 )) && log "$1"
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else
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warn "Failed to add database entry: $1"
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ERR=1
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fi
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elif [[ "$PLATFORM" == "Darwin" ]]; then
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# Darwin just has to be different, so no ACLs or xattrs.
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# Use the full path to Darwin's stat, in case there's a macports/brew/etc version installed.
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printf "%s %s\\n" "$(printf "%s" "$1" | base64 -b 0 2>/dev/null)" "$(/usr/bin/stat -f '%Fm %Fa %Su:%Sg %Mp%Lp' -- "$1" 2>/dev/null)" >>"$DB_TMP" || \
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{ warn "Failed to add database entry: $1"; ERR=1; }
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if printf "%s %s\\n" "$(printf "%s" "$1" | base64 -b 0 2>/dev/null)" "$(/usr/bin/stat -f '%Fm %Fa %Su:%Sg %Mp%Lp' -- "$1" 2>/dev/null)" >>"$DB_TMP"; then
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(( VERBOSE == 1 )) && log "$1"
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else
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warn "Failed to add database entry: $1"
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ERR=1
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fi
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else
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error "Unsupported platform: $PLATFORM"
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fi
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@ -163,7 +173,7 @@ store_attributes() {
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# Function to restore path attributes from the database.
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restore_attributes() {
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local COUNT=0 ID PATHNAME WARN
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local COUNT=0 ID PATHNAME PREV_WARN=0 WARN=0
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# Informational message.
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log "Restoring path attributes from database"
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@ -186,33 +196,62 @@ restore_attributes() {
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[[ -L "$PATHNAME" ]] && warn "Not restoring attributes for symlink: $PATHNAME" && continue
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# Restore ownerships.
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chown -- "${DB_OWNERSHIPS[$ID]}" "$PATHNAME" 2>/dev/null || { warn "Failed to restore ownership: $PATHNAME"; WARN=1; }
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chown -- "${DB_OWNERSHIPS[$ID]}" "$PATHNAME" 2>/dev/null || {
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warn "Failed to restore ownership: $PATHNAME"
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(( WARN++ ))
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}
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# Restore mode.
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chmod -- "${DB_MODES[$ID]}" "$PATHNAME" 2>/dev/null || { warn "Failed to restore permissions: $PATHNAME"; WARN=1; }
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chmod -- "${DB_MODES[$ID]}" "$PATHNAME" 2>/dev/null || {
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warn "Failed to restore permissions: $PATHNAME"
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(( WARN++ ))
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}
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# Restore {a,m}times (and ACLs on Linux).
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if [[ "$PLATFORM" == "Linux" ]]; then
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touch -m --date="$(date --date="19700101 00:00:00 + ${DB_MTIMES[$ID]} seconds" +'%Y/%m/%d %H:%M:%S.%N' 2>/dev/null)" -- "$PATHNAME" 2>/dev/null || \
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{ warn "Failed to restore mtime: $PATHNAME"; WARN=1; }
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touch -a --date="$(date --date="19700101 00:00:00 + ${DB_ATIMES[$ID]} seconds" +'%Y/%m/%d %H:%M:%S.%N' 2>/dev/null)" -- "$PATHNAME" 2>/dev/null || \
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{ warn "Failed to restore atime: $PATHNAME"; WARN=1; }
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[[ "${DB_ACLS[$ID]}" != "-" ]] && { printf "%s" "${DB_ACLS[$ID]}" | base64 -d 2>/dev/null | setfacl -M - -- "$PATHNAME" 2>/dev/null || \
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warn "Failed to restore ACLs: $PATHNAME"; WARN=1; }
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[[ "${DB_XATTRS[$ID]}" != "-" ]] && { printf "%s" "${DB_XATTRS[$ID]}" | base64 -d 2>/dev/null | setfattr --restore=- 2>/dev/null || \
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warn "Failed to restore xattrs: $PATHNAME"; WARN=1; }
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touch -m --date="$(date --date="19700101 00:00:00 + ${DB_MTIMES[$ID]} seconds" +'%Y/%m/%d %H:%M:%S.%N' 2>/dev/null)" -- "$PATHNAME" 2>/dev/null || {
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warn "Failed to restore mtime: $PATHNAME"
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(( WARN++ ))
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}
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touch -a --date="$(date --date="19700101 00:00:00 + ${DB_ATIMES[$ID]} seconds" +'%Y/%m/%d %H:%M:%S.%N' 2>/dev/null)" -- "$PATHNAME" 2>/dev/null || {
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warn "Failed to restore atime: $PATHNAME"
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(( WARN++ ))
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}
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[[ "${DB_ACLS[$ID]}" != "-" ]] && {
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printf "%s" "${DB_ACLS[$ID]}" | base64 -d 2>/dev/null | setfacl -M - -- "$PATHNAME" 2>/dev/null || {
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warn "Failed to restore ACLs: $PATHNAME"
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(( WARN++ ))
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}
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}
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[[ "${DB_XATTRS[$ID]}" != "-" ]] && {
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printf "%s" "${DB_XATTRS[$ID]}" | base64 -d 2>/dev/null | setfattr --restore=- 2>/dev/null || {
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warn "Failed to restore xattrs: $PATHNAME"
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(( WARN++ ))
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}
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}
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elif [[ "$PLATFORM" == "Darwin" ]]; then
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touch -m -d "$(date -j -r "${DB_MTIMES[$ID]%.*}" +"%Y-%m-%dT%H:%M:%S.${DB_MTIMES[$ID]#*.}")" -- "$PATHNAME" 2>/dev/null || \
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{ warn "Failed to restore mtime: $PATHNAME"; WARN=1; }
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touch -a -d "$(date -j -r "${DB_ATIMES[$ID]%.*}" +"%Y-%m-%dT%H:%M:%S.${DB_ATIMES[$ID]#*.}")" -- "$PATHNAME" 2>/dev/null || \
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{ warn "Failed to restore atime: $PATHNAME"; WARN=1; }
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touch -m -d "$(date -j -r "${DB_MTIMES[$ID]%.*}" +"%Y-%m-%dT%H:%M:%S.${DB_MTIMES[$ID]#*.}")" -- "$PATHNAME" 2>/dev/null || {
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warn "Failed to restore mtime: $PATHNAME"
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(( WARN++ ))
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}
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touch -a -d "$(date -j -r "${DB_ATIMES[$ID]%.*}" +"%Y-%m-%dT%H:%M:%S.${DB_ATIMES[$ID]#*.}")" -- "$PATHNAME" 2>/dev/null || {
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warn "Failed to restore atime: $PATHNAME"
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(( WARN++ ))
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}
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fi
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(( VERBOSE == 1 )) && (( WARN == PREV_WARN )) && log "$PATHNAME"
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PREV_WARN="$WARN"
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(( COUNT++ ))
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done < <(printf "%s\\n" "${!DB_OWNERSHIPS[@]}")
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# shellcheck disable=SC2015
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[[ ! -v WARN ]] && log "$COUNT entries restored" || log "$COUNT entries restored (with warnings)"
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if (( WARN == 0 )); then
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log "$COUNT entries restored"
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else
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log "$COUNT entries at least partially restored (with $WARN warnings)"
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fi
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return 0
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}
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@ -226,22 +265,24 @@ REPO_ROOT="$(git rev-parse --show-toplevel 2>/dev/null)"
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pushd -- "$REPO_ROOT" >/dev/null 2>&1 || error "Failed to switch to git repository root"
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# Parse command line.
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(( $# == 0 )) && {
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printf "%s: %s\\n" "${0##*/}" "missing argument" >&2
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printf "%s: %s %s\\n" "Try" "${0##*/}" "--help" >&2
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exit 1
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}
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case "$1" in
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'-h'|'--h'|'--help')
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show_help
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exit 0
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;;
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'-v'|'--v'|'--verbose')
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VERBOSE=1
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shift
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;;
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'post-checkout'|'post-merge')
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# Restore the path attributes from the database.
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restore_attributes
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FUNC="restore_attributes"
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shift
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;;
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'pre-commit')
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# Store the path attributes into the database.
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store_attributes
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FUNC="store_attributes"
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shift
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;;
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*)
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printf "%s: %s: %s\\n" "${0##*/}" "invalid option" "$1" >&2
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@ -250,4 +291,14 @@ case "$1" in
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;;
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esac
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# Sanity.
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[[ -z "$FUNC" ]] && {
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printf "%s: %s\\n" "${0##*/}" "missing argument" >&2
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printf "%s: %s %s\\n" "Try" "${0##*/}" "--help" >&2
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exit 1
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}
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# Run the appropriate function.
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"$FUNC"
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exit 0
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