Create load_lib.R

load_lib.R

@@ -0,0 +1,88 @@
+# =========================
+# 1) SAVE: Zip thư mục R library hiện tại
+# =========================
+save_r_lib_zip <- function(zip_out = "/content/R_library.zip",
+                           lib_dir = .libPaths()[1],
+                           zip_flags = "-r9X") {
+
+  stopifnot(dir.exists(lib_dir))
+  old <- getwd()
+  on.exit(setwd(old), add = TRUE)
+
+  setwd(dirname(lib_dir))
+  utils::zip(zipfile = zip_out, files = basename(lib_dir), flags = zip_flags)
+
+  message("✅ Saved R library to: ", zip_out)
+  return(zip_out)
+}
+
+
+# =========================
+# 2) LOAD: Unzip rồi dán đè packages vào R library hiện tại
+# =========================
+load_r_lib_zip <- function(zip_path,
+                           target_lib = .libPaths()[1],
+                           backup = TRUE,
+                           backup_dir = "/content",
+                           overwrite = TRUE,
+                           quiet = FALSE) {
+
+  if (!file.exists(zip_path)) stop("Zip file not found: ", zip_path)
+  dir.create(target_lib, recursive = TRUE, showWarnings = FALSE)
+
+  if (!quiet) {
+    message("ZIP: ", zip_path)
+    message("Target R lib: ", target_lib)
+  }
+
+  # (optional) backup thư mục library hiện tại
+  backup_tar <- NULL
+  if (backup) {
+    backup_tar <- file.path(
+      backup_dir,
+      sprintf("R_lib_backup_%s.tar.gz", format(Sys.time(), "%Y%m%d_%H%M%S"))
+    )
+    old <- getwd()
+    on.exit(setwd(old), add = TRUE)
+    setwd(dirname(target_lib))
+    utils::tar(backup_tar, files = basename(target_lib), compression = "gzip")
+    if (!quiet) message("🗄️ Backup saved: ", backup_tar)
+  }
+
+  # unzip ra folder tạm
+  tmp <- tempfile("Rlib_unzip_")
+  dir.create(tmp)
+  utils::unzip(zipfile = zip_path, exdir = tmp, overwrite = overwrite)
+
+  # tìm các folder package (có DESCRIPTION)
+  desc_files <- list.files(tmp, pattern = "^DESCRIPTION$", recursive = TRUE, full.names = TRUE)
+  pkg_dirs <- unique(dirname(desc_files))
+  if (length(pkg_dirs) == 0) stop("Không tìm thấy package nào (không thấy file DESCRIPTION) trong zip.")
+
+  if (!quiet) message("Found packages: ", length(pkg_dirs))
+
+  # copy đè từng package
+  copied <- 0L
+  for (src in pkg_dirs) {
+    pkg <- basename(src)
+    dest <- file.path(target_lib, pkg)
+
+    # xóa bản cũ để tránh sót file
+    system2("bash", c("-lc", paste("rm -rf", shQuote(dest))))
+    # copy bản mới vào target_lib
+    system2("bash", c("-lc", paste("cp -a", shQuote(src), shQuote(target_lib))))
+    copied <- copied + 1L
+  }
+
+  if (!quiet) {
+    message("✅ Done. Overwritten packages: ", copied)
+    message("Library paths now:"); print(.libPaths())
+  }
+
+  invisible(list(
+    zip_path = zip_path,
+    target_lib = target_lib,
+    overwritten = copied,
+    backup_tar = backup_tar
+  ))
+}