Mirror of forum.nim-lang.org

3161 :: strange copyFile

• oyster (orginal) [2017-09-11T07:47:34+02:00] view original

  I am using Nim Compiler Version 0.17.2 (2017-09-10) [Windows: amd64] with MSYS2+MingW64 on Win7 64 bits.

  I know test:test.txt is not a valid DOS/Windows filename. So how to detect it in code? Thanks

  
  import os
  try:
      copyFile("test.txt", "test:test.txt")
  except:
      echo "not support"          # this will not happend
  
  if existsFile("test:test.txt"):
      echo "ok"                    # this happends because a zero-byte test file is created and treated
  else:
      echo "no"
  
  Run

  the output is ok and a zero-byte test file is created

---

• Araq (orginal) [2017-09-11T08:38:15+02:00] view original

  os.copyFile uses the Windows API on Windows for copying so it inherits its problems.

---

• LeuGim (orginal) [2017-09-11T09:52:25+02:00] view original

  Try to test new file name for not containing disallowed symbols (<>?/\|":* and with code <32), not consisting entirely of dots and not ending with a dot, before trying to copy. If the path may contain directories chain and drive letter, change the test accodingly.

---

• sky_khan (orginal) [2017-09-11T10:26:54+02:00] view original

  'test:test.txt' is a valid filename for NTFS. You create a file named 'test' with additional stream 'test.txt'. See: NTFS Additional Data Streams

---

• LeuGim (orginal) [2017-09-11T16:19:33+02:00] view original

  From oyster's words follows that he meant usual files and considered that filename invalid, and wanted to filter out such names.

---