Mirror of forum.nim-lang.org

8012 :: Error: cannot open file: fusion

• masiarek2 (orginal) [2021-05-22T10:30:07+02:00] view original

  at this page: https://github.com/nim-lang/Nim/wiki/Nim-for-Python-Programmers#Reading-and-writing-files

  Example:

  import fusion/scripting
  
  withDir "subfolder":
    echo "Inside subfolder"
  echo "Go back outside subfolder"
  Run

  fails with error message: Error: cannot open file: fusion

  Minimum reproducible example:

  import fusion
  Run

  My goal:

  • provide folder name - e.g. /Volumes/T7/Folder/
  • copy all the files in the directory "/Volumes/T7/Folder/" to "/Volumes/T7/FolderNew"

---

• masiarek2 (orginal) [2021-05-22T10:33:40+02:00] view original

  This helps: Maybe this can help: http://rosettacode.org/wiki/Walk_a_directory/Recursively#Nim

---

• masiarek2 (orginal) [2021-05-22T11:10:09+02:00] view original

  wow - creating a new directory is very easy: https://nim-lang.org/docs/os.html#createDir%2Cstring

  createDir "/Volumes/T7/Folder2/"
  Run

---

• masiarek2 (orginal) [2021-05-22T11:18:40+02:00] view original

  hopefully this is idiomatic / correct Nim approach:

  import os, re
  
  for file in walkDirRec "/Volumes/T7/Folder/":
    if file.match re".*\.txt":
      echo file
  
  createDir "/Volumes/T7/Folder2/" # just to test creation of a folder
  
  # this is the actual solution - copy folder and all the files
  copyDir "/Volumes/T7/Folder/", "/Volumes/T7/Folder3/"
  Run

---

• kaushalmodi (orginal) [2021-05-22T14:34:26+02:00] view original

  You don't need regular expressions for that kind of matching. Usually, I have seen use of regex only if it necessary.

  For your example file.endsWith(".txt") would work. You'll need to import std/[strutils] for that.

---