diff options
Diffstat (limited to 'vendor/github.com/prometheus/procfs/ttar')
| -rwxr-xr-x | vendor/github.com/prometheus/procfs/ttar | 389 |
1 files changed, 0 insertions, 389 deletions
diff --git a/vendor/github.com/prometheus/procfs/ttar b/vendor/github.com/prometheus/procfs/ttar deleted file mode 100755 index b0171a1..0000000 --- a/vendor/github.com/prometheus/procfs/ttar +++ /dev/null @@ -1,389 +0,0 @@ -#!/usr/bin/env bash - -# Purpose: plain text tar format -# Limitations: - only suitable for text files, directories, and symlinks -# - stores only filename, content, and mode -# - not designed for untrusted input -# -# Note: must work with bash version 3.2 (macOS) - -# Copyright 2017 Roger Luethi -# -# Licensed under the Apache License, Version 2.0 (the "License"); -# you may not use this file except in compliance with the License. -# You may obtain a copy of the License at -# -# http://www.apache.org/licenses/LICENSE-2.0 -# -# Unless required by applicable law or agreed to in writing, software -# distributed under the License is distributed on an "AS IS" BASIS, -# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -# See the License for the specific language governing permissions and -# limitations under the License. - -set -o errexit -o nounset - -# Sanitize environment (for instance, standard sorting of glob matches) -export LC_ALL=C - -path="" -CMD="" -ARG_STRING="$*" - -#------------------------------------------------------------------------------ -# Not all sed implementations can work on null bytes. In order to make ttar -# work out of the box on macOS, use Python as a stream editor. - -USE_PYTHON=0 - -PYTHON_CREATE_FILTER=$(cat << 'PCF' -#!/usr/bin/env python - -import re -import sys - -for line in sys.stdin: - line = re.sub(r'EOF', r'\EOF', line) - line = re.sub(r'NULLBYTE', r'\NULLBYTE', line) - line = re.sub('\x00', r'NULLBYTE', line) - sys.stdout.write(line) -PCF -) - -PYTHON_EXTRACT_FILTER=$(cat << 'PEF' -#!/usr/bin/env python - -import re -import sys - -for line in sys.stdin: - line = re.sub(r'(?<!\\)NULLBYTE', '\x00', line) - line = re.sub(r'\\NULLBYTE', 'NULLBYTE', line) - line = re.sub(r'([^\\])EOF', r'\1', line) - line = re.sub(r'\\EOF', 'EOF', line) - sys.stdout.write(line) -PEF -) - -function test_environment { - if [[ "$(echo "a" | sed 's/a/\x0/' | wc -c)" -ne 2 ]]; then - echo "WARNING sed unable to handle null bytes, using Python (slow)." - if ! which python >/dev/null; then - echo "ERROR Python not found. Aborting." - exit 2 - fi - USE_PYTHON=1 - fi -} - -#------------------------------------------------------------------------------ - -function usage { - bname=$(basename "$0") - cat << USAGE -Usage: $bname [-C <DIR>] -c -f <ARCHIVE> <FILE...> (create archive) - $bname -t -f <ARCHIVE> (list archive contents) - $bname [-C <DIR>] -x -f <ARCHIVE> (extract archive) - -Options: - -C <DIR> (change directory) - -v (verbose) - -Example: Change to sysfs directory, create ttar file from fixtures directory - $bname -C sysfs -c -f sysfs/fixtures.ttar fixtures/ -USAGE -exit "$1" -} - -function vecho { - if [ "${VERBOSE:-}" == "yes" ]; then - echo >&7 "$@" - fi -} - -function set_cmd { - if [ -n "$CMD" ]; then - echo "ERROR: more than one command given" - echo - usage 2 - fi - CMD=$1 -} - -unset VERBOSE - -while getopts :cf:htxvC: opt; do - case $opt in - c) - set_cmd "create" - ;; - f) - ARCHIVE=$OPTARG - ;; - h) - usage 0 - ;; - t) - set_cmd "list" - ;; - x) - set_cmd "extract" - ;; - v) - VERBOSE=yes - exec 7>&1 - ;; - C) - CDIR=$OPTARG - ;; - *) - echo >&2 "ERROR: invalid option -$OPTARG" - echo - usage 1 - ;; - esac -done - -# Remove processed options from arguments -shift $(( OPTIND - 1 )); - -if [ "${CMD:-}" == "" ]; then - echo >&2 "ERROR: no command given" - echo - usage 1 -elif [ "${ARCHIVE:-}" == "" ]; then - echo >&2 "ERROR: no archive name given" - echo - usage 1 -fi - -function list { - local path="" - local size=0 - local line_no=0 - local ttar_file=$1 - if [ -n "${2:-}" ]; then - echo >&2 "ERROR: too many arguments." - echo - usage 1 - fi - if [ ! -e "$ttar_file" ]; then - echo >&2 "ERROR: file not found ($ttar_file)" - echo - usage 1 - fi - while read -r line; do - line_no=$(( line_no + 1 )) - if [ $size -gt 0 ]; then - size=$(( size - 1 )) - continue - fi - if [[ $line =~ ^Path:\ (.*)$ ]]; then - path=${BASH_REMATCH[1]} - elif [[ $line =~ ^Lines:\ (.*)$ ]]; then - size=${BASH_REMATCH[1]} - echo "$path" - elif [[ $line =~ ^Directory:\ (.*)$ ]]; then - path=${BASH_REMATCH[1]} - echo "$path/" - elif [[ $line =~ ^SymlinkTo:\ (.*)$ ]]; then - echo "$path -> ${BASH_REMATCH[1]}" - fi - done < "$ttar_file" -} - -function extract { - local path="" - local size=0 - local line_no=0 - local ttar_file=$1 - if [ -n "${2:-}" ]; then - echo >&2 "ERROR: too many arguments." - echo - usage 1 - fi - if [ ! -e "$ttar_file" ]; then - echo >&2 "ERROR: file not found ($ttar_file)" - echo - usage 1 - fi - while IFS= read -r line; do - line_no=$(( line_no + 1 )) - local eof_without_newline - if [ "$size" -gt 0 ]; then - if [[ "$line" =~ [^\\]EOF ]]; then - # An EOF not preceeded by a backslash indicates that the line - # does not end with a newline - eof_without_newline=1 - else - eof_without_newline=0 - fi - # Replace NULLBYTE with null byte if at beginning of line - # Replace NULLBYTE with null byte unless preceeded by backslash - # Remove one backslash in front of NULLBYTE (if any) - # Remove EOF unless preceeded by backslash - # Remove one backslash in front of EOF - if [ $USE_PYTHON -eq 1 ]; then - echo -n "$line" | python -c "$PYTHON_EXTRACT_FILTER" >> "$path" - else - # The repeated pattern makes up for sed's lack of negative - # lookbehind assertions (for consecutive null bytes). - echo -n "$line" | \ - sed -e 's/^NULLBYTE/\x0/g; - s/\([^\\]\)NULLBYTE/\1\x0/g; - s/\([^\\]\)NULLBYTE/\1\x0/g; - s/\\NULLBYTE/NULLBYTE/g; - s/\([^\\]\)EOF/\1/g; - s/\\EOF/EOF/g; - ' >> "$path" - fi - if [[ "$eof_without_newline" -eq 0 ]]; then - echo >> "$path" - fi - size=$(( size - 1 )) - continue - fi - if [[ $line =~ ^Path:\ (.*)$ ]]; then - path=${BASH_REMATCH[1]} - if [ -e "$path" ] || [ -L "$path" ]; then - rm "$path" - fi - elif [[ $line =~ ^Lines:\ (.*)$ ]]; then - size=${BASH_REMATCH[1]} - # Create file even if it is zero-length. - touch "$path" - vecho " $path" - elif [[ $line =~ ^Mode:\ (.*)$ ]]; then - mode=${BASH_REMATCH[1]} - chmod "$mode" "$path" - vecho "$mode" - elif [[ $line =~ ^Directory:\ (.*)$ ]]; then - path=${BASH_REMATCH[1]} - mkdir -p "$path" - vecho " $path/" - elif [[ $line =~ ^SymlinkTo:\ (.*)$ ]]; then - ln -s "${BASH_REMATCH[1]}" "$path" - vecho " $path -> ${BASH_REMATCH[1]}" - elif [[ $line =~ ^# ]]; then - # Ignore comments between files - continue - else - echo >&2 "ERROR: Unknown keyword on line $line_no: $line" - exit 1 - fi - done < "$ttar_file" -} - -function div { - echo "# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -" \ - "- - - - - -" -} - -function get_mode { - local mfile=$1 - if [ -z "${STAT_OPTION:-}" ]; then - if stat -c '%a' "$mfile" >/dev/null 2>&1; then - # GNU stat - STAT_OPTION='-c' - STAT_FORMAT='%a' - else - # BSD stat - STAT_OPTION='-f' - # Octal output, user/group/other (omit file type, sticky bit) - STAT_FORMAT='%OLp' - fi - fi - stat "${STAT_OPTION}" "${STAT_FORMAT}" "$mfile" -} - -function _create { - shopt -s nullglob - local mode - local eof_without_newline - while (( "$#" )); do - file=$1 - if [ -L "$file" ]; then - echo "Path: $file" - symlinkTo=$(readlink "$file") - echo "SymlinkTo: $symlinkTo" - vecho " $file -> $symlinkTo" - div - elif [ -d "$file" ]; then - # Strip trailing slash (if there is one) - file=${file%/} - echo "Directory: $file" - mode=$(get_mode "$file") - echo "Mode: $mode" - vecho "$mode $file/" - div - # Find all files and dirs, including hidden/dot files - for x in "$file/"{*,.[^.]*}; do - _create "$x" - done - elif [ -f "$file" ]; then - echo "Path: $file" - lines=$(wc -l "$file"|awk '{print $1}') - eof_without_newline=0 - if [[ "$(wc -c "$file"|awk '{print $1}')" -gt 0 ]] && \ - [[ "$(tail -c 1 "$file" | wc -l)" -eq 0 ]]; then - eof_without_newline=1 - lines=$((lines+1)) - fi - echo "Lines: $lines" - # Add backslash in front of EOF - # Add backslash in front of NULLBYTE - # Replace null byte with NULLBYTE - if [ $USE_PYTHON -eq 1 ]; then - < "$file" python -c "$PYTHON_CREATE_FILTER" - else - < "$file" \ - sed 's/EOF/\\EOF/g; - s/NULLBYTE/\\NULLBYTE/g; - s/\x0/NULLBYTE/g; - ' - fi - if [[ "$eof_without_newline" -eq 1 ]]; then - # Finish line with EOF to indicate that the original line did - # not end with a linefeed - echo "EOF" - fi - mode=$(get_mode "$file") - echo "Mode: $mode" - vecho "$mode $file" - div - else - echo >&2 "ERROR: file not found ($file in $(pwd))" - exit 2 - fi - shift - done -} - -function create { - ttar_file=$1 - shift - if [ -z "${1:-}" ]; then - echo >&2 "ERROR: missing arguments." - echo - usage 1 - fi - if [ -e "$ttar_file" ]; then - rm "$ttar_file" - fi - exec > "$ttar_file" - echo "# Archive created by ttar $ARG_STRING" - _create "$@" -} - -test_environment - -if [ -n "${CDIR:-}" ]; then - if [[ "$ARCHIVE" != /* ]]; then - # Relative path: preserve the archive's location before changing - # directory - ARCHIVE="$(pwd)/$ARCHIVE" - fi - cd "$CDIR" -fi - -"$CMD" "$ARCHIVE" "$@" |