From 961b8a902ddeb3623c26e2c72f1c12c85751c8c1 Mon Sep 17 00:00:00 2001
From: grayhook <s@marinkevich.ru>
Date: Fri, 13 Jun 2025 13:19:50 +0700
Subject: [PATCH] init

---
 ebup.sh | 205 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 205 insertions(+)
 create mode 100755 ebup.sh

diff --git a/ebup.sh b/ebup.sh
new file mode 100755
index 0000000..469b2bc
--- /dev/null
+++ b/ebup.sh
@@ -0,0 +1,205 @@
+#!/bin/bash
+
+set -euo pipefail
+
+# --- Functions ---
+
+print_usage() {
+  echo "Usage: $0 [backup_output_path] [--list file_with_paths] -- <src_dir1> <src_dir2> ..."
+  echo
+  echo "Examples:"
+  echo "  $0 /backup/my_backup.tar.gz -- /home/user /etc"
+  echo "  BACKUP_PATH=/backup/auto.tar.gz $0 --list dirs.txt -- /var/log"
+  echo "  $0 /mnt/backup/nextcloud_mirror -- /srv/nextcloud"
+  exit 1
+}
+
+parse_args() {
+  local -n _target_path=$1
+  local -n _src_dirs=$2
+  local -n _list_file=$3
+  local -n _archive_type=$4
+
+  local positional=()
+  local in_sources=0
+
+  while [[ $# -gt 4 ]]; do
+    case "${5}" in
+      --list)
+        shift 5
+        _list_file="${1:-}"
+        if [[ -z "$_list_file" || ! -f "$_list_file" ]]; then
+          echo "Error: list file '$_list_file' not found." >&2
+          print_usage
+          exit 1
+        fi
+        shift
+        ;;
+      --)
+        in_sources=1
+        shift
+        ;;
+      *)
+        if [[ $in_sources -eq 1 ]]; then
+          _src_dirs+=("$5")
+        else
+          positional+=("$5")
+        fi
+        shift
+        ;;
+    esac
+  done
+
+  if [[ ${#positional[@]} -gt 1 ]]; then
+    echo "Error: Too many positional arguments before --" >&2
+    print_usage
+  elif [[ ${#positional[@]} -eq 1 ]]; then
+    _target_path="${positional[0]}"
+  else
+    _target_path="${BACKUP_PATH:-}"
+  fi
+
+  if [[ -z "$_target_path" ]]; then
+    echo "Error: No target path provided and BACKUP_PATH is not set." >&2
+    print_usage
+    exit 1
+  fi
+
+  case "$_target_path" in
+    *.tar) _archive_type="tar";;
+    *.tar.gz|*.tgz) _archive_type="targz";;
+    *.tar.xz|*.txz) _archive_type="tarxz";;
+    *.tar.bz2|*.tbz) _archive_type="tarbz2";;
+    *.7z) _archive_type="7z";;
+    *) _archive_type="NONE";;
+  esac
+}
+
+load_dirs_from_list_file() {
+  local -n _src_dirs=$1
+  local list_file="$2"
+
+  if [[ -n "$list_file" ]]; then
+    while IFS= read -r line || [[ -n "$line" ]]; do
+      [[ -z "$line" || "$line" =~ ^# ]] && continue
+      _src_dirs+=("$line")
+    done < "$list_file"
+  fi
+}
+
+validate_src_dirs() {
+  local -n _src_dirs=$1
+  local valid_dirs=()
+  for dir in "${_src_dirs[@]}"; do
+    if [[ -d "$dir" ]]; then
+      valid_dirs+=("$dir")
+    else
+      echo "Warning: '$dir' is not a valid directory. Skipping." >&2
+    fi
+  done
+  _src_dirs=("${valid_dirs[@]}")
+
+  if [[ ${#_src_dirs[@]} -eq 0 ]]; then
+    echo "Error: No valid source directories to back up." >&2
+    print_usage
+    exit 1
+  fi
+}
+
+init_tmp_dir() {
+  mktemp -d -t backup-tmp-XXXXXX
+}
+
+count_files() {
+  local src_dirs=("$@")
+  local count=0
+  echo "Counting directories: " "${src_dirs[@]}" 1>&2
+  for dir in "${src_dirs[@]}"; do
+    echo "Counting directory: " "$dir" 1>&2
+    for subdir in `find . -maxdepth 2`
+    count=$((count + $(find "$dir" -xdev | wc -l)))
+  done
+  echo "$count"
+}
+
+run_rsync_backup() {
+  local src_dirs=("${!1}")
+  local dest_path="$2"
+  local file_count="$3"
+
+  echo "Starting backup..."
+  for dir in "${src_dirs[@]}"; do
+    base="$(basename "$dir")"
+    dest_dir="$dest_path/$base"
+    rsync -Aavx "$dir"/ "$dest_dir"/ | pv -ltps "$file_count" > /dev/null
+  done
+  echo "Rsync completed."
+}
+
+compress_backup() {
+  local tmp_dir="$1"
+  local target_path="$2"
+  local archive_type="$3"
+
+  echo "Creating archive: $target_path"
+  case "$archive_type" in
+    targz)
+      tar czf - -C "$tmp_dir" . | pv -s "$(du -sb "$tmp_dir" | awk '{print $1}')" > "$target_path"
+      ;;
+    tar)
+      tar cf - -C "$tmp_dir" . | pv -s "$(du -sb "$tmp_dir" | awk '{print $1}')" > "$target_path"
+      ;;
+    tarxz)
+      tar cJf - -C "$tmp_dir" . | pv -s "$(du -sb "$tmp_dir" | awk '{print $1}')" > "$target_path"
+      ;;
+    tarbz2)
+      tar cjf - -C "$tmp_dir" . | pv -s "$(du -sb "$tmp_dir" | awk '{print $1}')" > "$target_path"
+      ;;
+    7z)
+      7z a -mx=9 "$target_path" "$tmp_dir"/*
+      ;;
+    *)
+      echo "Unsupported archive type or no compression." >&2
+      return 1
+      ;;
+  esac
+  echo "Archive created successfully."
+}
+
+cleanup_tmp_dir() {
+  local tmp_dir="$1"
+  if [[ -n "$tmp_dir" && -d "$tmp_dir" ]]; then
+    echo "Cleaning up temporary files..."
+    rm -rf "$tmp_dir"
+    echo "Done."
+  fi
+}
+
+main() {
+  local TARGET_PATH=""
+  local SRC_DIRS=()
+  local LIST_FILE=""
+  local ARCHIVE_TYPE="NONE"
+
+  parse_args TARGET_PATH SRC_DIRS LIST_FILE ARCHIVE_TYPE "$@"
+  load_dirs_from_list_file SRC_DIRS "$LIST_FILE"
+  validate_src_dirs SRC_DIRS
+
+  local FILE_COUNT
+  FILE_COUNT=$(count_files "${SRC_DIRS[@]}")
+
+  if [[ "$ARCHIVE_TYPE" != "NONE" ]]; then
+    local TMP_DIR
+    TMP_DIR=$(init_tmp_dir)
+    run_rsync_backup SRC_DIRS[@] "$TMP_DIR" "$FILE_COUNT"
+    compress_backup "$TMP_DIR" "$TARGET_PATH" "$ARCHIVE_TYPE"
+    cleanup_tmp_dir "$TMP_DIR"
+  else
+    mkdir -p "$TARGET_PATH"
+    run_rsync_backup SRC_DIRS[@] "$TARGET_PATH" "$FILE_COUNT"
+  fi
+}
+
+# --- Entry Point ---
+main "$@"
+