From f40745a8d450aeddd4e7e54e53a62393c9e47728 Mon Sep 17 00:00:00 2001
From: zawz <zawz@hotmail.fr>
Date: Tue, 8 Jun 2021 16:45:50 +0200
Subject: [PATCH] remove zsync

---
 zsync/zsync | 449 ----------------------------------------------------
 1 file changed, 449 deletions(-)
 delete mode 100755 zsync/zsync

diff --git a/zsync/zsync b/zsync/zsync
deleted file mode 100755
index 376b084..0000000
--- a/zsync/zsync
+++ /dev/null
@@ -1,449 +0,0 @@
-#!/bin/sh
-
-##
-## NO T OPTION FOR RSYNC
-
-# globals
-syncdir=".zsync"
-lock_file=".zsync/lock"
-ignore_file=".zsync/ignore"
-tree_full=".zsync/tree_full"
-tree_hash=".zsync/tree_hash"
-config_file=".zsync/config"
-
-rsync_opts='-rvlpE'
-
-tmpdir=${TMPDIR-/tmp}
-
-# usage
-fname=$(basename "$0")
-usage()
-{
-  echo "$fname [operation]
-
-Operations:
-  server <server>     Setup sync on current folder with server target
-  run [file...]       Run sync with server
-  push [file...]      Regular run but push all conflicts
-  pull [file...]      Regular run but pull all conflicts
-  dry [file...]       Run a simulated sync but do not perform any action
-  drypush [file...]   Dry run as push
-  drypull [file...]   Dry run as pull
-  forcepush           Push by force the entire tree. Will replace and delete remote files
-  forcepull           Pull by force the entire tree. Will replace and delete local files"
-}
-
-## generic tools
-
-# $@ = paths
-check_paths()
-{
-  for N
-  do
-    echo "$N" | grep "^/" && echo "Path cannot start with /" >&2 && return 1
-    echo "$N" | grep -w ".." && echo "Path cannot contain .." >&2 && return 1
-  done
-  return 0
-}
-
-tmpdir() {
-  echo "$tmpdir/zsync_$(tr -dc '[:alnum:]' </dev/urandom | head -c20)"
-}
-
-## CONFIG
-
-init_config() {
-  mkdir -p "$syncdir" || return 2
-  which rsync >/dev/null 2>&1 || { echo rsync not installed on server >&2 ; return 3; }
-  touch "$config_file" || return 5
-}
-
-get_server() {
-  [ ! -f "$config_file" ] && return 1
-  servconf=$(sed 's|^[ \t]*||g' "$config_file" | grep -E '^server[ \t]' | sed 's|^server[ \t]*||g' | tail -n1)
-  raddr=$(echo "$servconf" | cut -d ':' -f1)
-  rdir=$(echo "$servconf" | cut -d ':' -f2-)
-}
-
-# $1 = server arg
-setup_server()
-{
-  init_config || return $?
-  [ -z "$1" ] && echo "$fname server user@host:path" && return 1
-  sed -i '/^[ \t]*server[ \t]/d' "$config_file"
-  echo "server $1" >> "$config_file"
-}
-
-ignores=""
-get_ignores() {
-  if [ -f "$ignore_file" ]
-  then
-    ignores="($(tr '\n' '|' < "$ignore_file"))"
-  else
-    ignores='(^$)'
-  fi
-  ignores=$(echo "$ignores" | sed ' s/|)/)/g ; s/^()$/^$/g ')
-}
-
-## LOCK
-
-lock_local() { touch "$lock_file"; }
-unlock_local() { rm "$lock_file"; }
-lock_server() { ssh "$raddr" "cd '$rdir' && touch '$lock_file'"; }
-unlock_server() { ssh "$raddr" "cd '$rdir' && rm '$lock_file'"; }
-lock_all() { lock_local && lock_server ; }
-unlock_all() { ret=0; unlock_local || ret=$? ; unlock_server || ret=$?; return $ret ; }
-
-local_lock_check() {
-  [ ! -f "$lock_file" ] || { echo "Local sync locked, wait for sync completion" >&2 && return 1; }
-}
-server_lock_check() {
-  ssh "$raddr" "cd '$rdir' && [ ! -f '$lock_file' ]" || { echo "Server is busy, wait for sync completion" >&2 && return 1; }
-}
-
-# init
-init_local() {
-  mkdir -p "$syncdir" || return 2
-  which rsync >/dev/null 2>&1 || { echo rsync not installed on server >&2 ; return 3; }
-  local_lock_check || return 4
-  touch "$lock_file" || return 5
-}
-
-init_server() {
-  ssh "$raddr" "
-    cd '$rdir' || exit 1
-    mkdir -p '$syncdir' || exit 2
-    which rsync >/dev/null 2>&1 || { echo rsync not installed on server >&2 ; exit 3; }
-    [ -f '$lock_file' ] && { echo Server is busy, wait for sync completion ; exit 4; }
-    touch '$lock_file' || exit 5
-    "
-}
-
-## LIST GET
-
-local_hash_list()
-{
-  { ( set -e
-  find . -type f ! -regex "^./$syncdir/.*" | sed 's|^./||g' | tr '\n' '\0' | xargs -0 md5sum | cut -c1-33,35- | grep -vE "$ignores"
-  find . -type l | sed 's|^./||g' | while read -r ln
-  do
-    find "$ln" -maxdepth 0 -printf '%l' | md5sum | sed "s|-|$ln|g"
-  done | cut -c1-33,35- | grep -vE "$ignores"
-  ) || return $?; } | sort
-}
-
-server_hash_list()
-{
-  ssh "$raddr" "set -e
-    cd '$rdir'
-    find . -type f ! -regex '^./$syncdir/.*' | sed 's|^./||g' | tr '\n' '\0' | xargs -0 md5sum | cut -c1-33,35- | grep -vE '$ignores'
-    find . -type l | sed 's|^./||g' | while read -r ln
-    do
-      find \"\$ln\" -maxdepth 0 -printf '%l' | md5sum | sed \"s|-|\$ln|g\"
-    done | cut -c1-33,35- | grep -vE '$ignores'
-  " | sort
-}
-
-local_full_list() {
-  find . -mindepth 1 ! -regex "^./$syncdir\$" ! -regex "^./$syncdir/.*" | sed 's|^./||g' | grep -vE "$ignores" | sort
-}
-
-server_full_list() {
-  ssh "$raddr" "set -e
-    cd '$rdir'
-    find . -mindepth 1 ! -regex '^./$syncdir\$' ! -regex '^./$syncdir/.*' | sed 's|^./||g' | grep -vE '$ignores'
-    "| sort
-}
-
-write_lists()
-{
-  local_full_list > "$tree_full"
-  local_hash_list > "$tree_hash"
-}
-
-## FILTERS
-
-run_ignore() {
-  [ -n "$ignores" ] && grep -vE "$ignores" "$@"
-}
-
-# $1 = regex , $@ = args
-grep_after_sum()
-{
-  reg=$1
-  shift 1
-  grep --color=never -E "^[0-9a-f]{32} $reg" "$@"
-}
-# $@ = match these
-merge()
-{
-  if [ $# -gt 0 ]
-  then
-    re="$1"
-    shift 1
-    for N
-    do
-      re="$re|$N"
-    done
-    grep -E "^($re)"
-    return 0
-  else # don't change input
-    cat
-  fi
-}
-
-reduce_list()
-{
-  list="$(cat /dev/stdin)"
-  I=1
-  while true
-  do
-    ln=$(echo "$list" | sed -n "$I"p) # get nth line
-    [ -z "$ln" ] && break
-    list=$(echo "$list" | grep -v "^$ln/")
-    I=$((I+1))
-  done
-  echo "$list"
-}
-
-## DIFFERENCES
-
-# find changes from list
-# $1 = list file , $@ = targets
-# requisite: file contains both hash and filename and is sorted
-list_diff()
-{
-  file=$1
-  shift 1
-  [ ! -f "$tree_hash" ] && { cut -c34- "$file" ; return 0; }
-  diff --old-line-format="" --unchanged-line-format="" "$tree_hash" "$file" | cut -c34- | merge "$@"
-}
-
-# find deleted from list
-# $1 = list file , $@ = targets
-# requisite: file contains only filename and is sorted
-get_deleted()
-{
-  file=$1
-  shift 1
-  [ ! -f "$tree_full" ] && return 0
-  diff --new-line-format="" --unchanged-line-format="" "$tree_full" "$file" | reduce_list | grep -vE "$ignores" | merge "$@"
-}
-
-## TRANSACTIONS
-
-# read list from stdin
-# $1 = dry mode
-send() {
-  if [ "$1" = "dry" ]
-  then
-    echo "* files to send"
-    cat
-  else
-    printf '* '
-    rsync $rsync_opts --files-from=- --exclude=".zsync" -e ssh "$(pwd)" "$raddr:$rdir" || return $?
-  fi
-}
-
-# read list from stdin
-# $1 = dry mode
-recieve() {
-  if [ "$1" = "dry" ]
-  then
-    echo "* files to recieve"
-    cat
-  else
-    printf '* '
-    rsync $rsync_opts --files-from=- -e ssh "$raddr:$rdir" "$(pwd)" || return $?
-  fi
-}
-
-
-# read list from stdin
-# $1 = dry mode
-delete_server() {
-  if [ "$1" = "dry" ]
-  then
-    echo "* deleted to send"
-    cat
-  else
-    echo "* sending deleted"
-    ssh "$raddr" "cd '$rdir' || exit 1
-    trashutil='gio trash'
-    which trash-put >/dev/null 2>&1 && trashutil=trash-put
-    while read -r ln
-    do
-      \$trashutil \"\$ln\" && echo \"\$ln\" || exit \$?
-    done
-    " || return $?
-  fi
-}
-# read delete from stdin
-# $1 = dry mode
-delete_local() {
-  if [ "$1" = "dry" ]
-  then
-    echo "* deleted to recieve"
-    cat
-  else
-    echo "* recieving deleted"
-    trashutil='gio trash'
-    which trash-put >/dev/null 2>&1 && trashutil=trash-put
-    while read -r ln
-    do
-      $trashutil "$ln" && echo "$ln" || return $?
-    done
-  fi
-}
-
-forcepull()
-{
-  local ret=0
-  get_server  || return $?
-  init_local  || return $?
-  init_server || { unlock_local ; return $?; }
-  rsync $rsync_opts -r --delete -e ssh "$raddr:$rdir" "$(pwd)/." || ret=$?
-  unlock_all
-  write_lists
-  return $ret
-}
-
-forcepush()
-{
-  local ret=0
-  get_server  || return $?
-  init_local  || return $?
-  init_server || { unlock_local ; return $?; }
-  rsync $rsync_opts -r --delete -e ssh "$(pwd)/." "$raddr:$rdir" || ret=$?
-  unlock_all
-  write_lists
-  return $ret
-}
-
-# $1 = method (null/'push'/'pull') , $2 = dry (null/'dry') , $@ = files
-sync()
-{
-  method=$1
-  dry=$2
-  shift 2
-
-  check_paths "$@" || return $?
-
-  get_server || { echo "Server not configured on this instance" >&2 && return 1; }
-  get_ignores
-
-  # init and check local
-  init_local || return $?
-
-  # init, check, and lock server
-  init_server || {
-    ret=$?
-    unlock_local
-    return $ret
-  }
-
-  tdir=$(tmpdir)
-  mkdir -p "$tdir"
-
-
-  local_full_list  > "$tdir/local_full"
-  local_hash_list  > "$tdir/local_hash"
-  server_full_list > "$tdir/server_full"
-  server_hash_list > "$tdir/server_hash"
-
-  # get changed on both sides
-  local_newer=$( list_diff "$tdir/local_hash"  "$@") || { rm -rf "$tdir" ; unlock_all ; return 1; }
-  server_newer=$(list_diff "$tdir/server_hash" "$@") || { rm -rf "$tdir" ; unlock_all ; return 1; }
-  # get deleted on both sides
-  deleted_local=$( get_deleted "$tdir/local_full"  "$@") || { rm -rf "$tdir" ; unlock_all ; return 1; }
-  deleted_server=$(get_deleted "$tdir/server_full" "$@") || { rm -rf "$tdir" ; unlock_all ; return 1; }
-
-  # get collisions
-  collisions=$(printf "%s\n%s\n" "$local_newer" "$server_newer" | sort | uniq -d)
-  [ -n "$collisions" ] && [ "$method" != push ] && [ "$method" != pull ] && {
-    echo "-- There are file collisions" >&2
-    echo "$collisions"
-    rm -rf "$tdir"
-    unlock_all
-    return 100
-  }
-
-  # remove collisions from opposing method
-  [ -n "$collisions" ] && {
-    if [ "$method" = "pull" ]
-    then
-      local_newer=$(printf "%s\n%s\n" "$collisions" "$local_newer" | sort | uniq -u)
-    else
-      server_newer=$(printf "%s\n%s\n" "$collisions" "$server_newer" | sort | uniq -u)
-    fi
-  }
-
-  if [ -n "$local_newer" ] || [ -n "$server_newer" ] || [ -n "$deleted_local" ] || [ -n "$deleted_server" ]
-  then
-    # operations
-    if [ "$method" = "pull" ]
-    then
-      [ -n "$server_newer" ] && echo "$server_newer" | recieve "$dry"
-      [ -n "$local_newer"  ] && echo "$local_newer"  | send    "$dry"
-    else
-      [ -n "$local_newer"  ] && echo "$local_newer"  | send    "$dry"
-      [ -n "$server_newer" ] && echo "$server_newer" | recieve "$dry"
-    fi
-
-    # delete has no impact on timestamps
-    [ -n "$deleted_local"  ] && echo "$deleted_local"  | delete_server "$dry"
-    [ -n "$deleted_server" ] && echo "$deleted_server" | delete_local  "$dry"
-
-    # real run
-    [ "$dry" != "dry" ] && {
-      # update lists
-      write_lists
-    }
-  fi
-
-  rm -rf "$tdir"
-
-  unlock_all
-}
-
-which rsync >/dev/null || { echo "rsync not installed" >&2 && exit 1; }
-
-# options
-unset arg_c
-while getopts ":hC:" opt;
-do
-  case $opt in
-    C)
-      [ -z "$OPTARG" ] && echo "Option -C requires an argument" >&2 && exit 1
-      arg_c="$OPTARG"
-      ;;
-    h) usage && exit 1 ;;
-    \?) echo "Unknown option: $OPTARG" >&2 && usage && exit 1 ;;
-  esac
-done
-shift $((OPTIND-1))
-
-# raddr=zawz@zawz.net
-# rdir=sync/tmp
-[ -f "$server_file" ] && get_server
-
-# preprocess
-[ -n "$arg_c" ] && { cd "$arg_c" || exit $?; }   # -C opt
-
-[ $# -lt 1 ] && usage && exit 1
-arg=$1
-shift 1
-
-# actions
-case $arg in
-  server) setup_server "$@" ;;
-  run)     sync ""   ""  "$@" ;;
-  pull)    sync pull ""  "$@" ;;
-  push)    sync push ""  "$@" ;;
-  dry)     sync ""   dry "$@" ;;
-  drypush) sync push dry "$@" ;;
-  drypull) sync pull dry "$@" ;;
-  forcepush) forcepush ;;
-  forcepull) forcepull ;;
-  *) usage && exit 1 ;;
-esac