replacemarcchars is a commandline command (Python3 program) that takes binary MARC records/lines (e.g. originally stored in a JSON value) as input and replace some characters in it to be really binary MARC compatible.

Following replace methods are available:

• decimal: replaces '#29;', '#30;', '#31;' with "\x1D", "\x1E", "\x1F"
• unicode: replaces '\u001d', '\u001e', '\u001f' with "\x1D", "\x1E", "\x1F"
• hex: replaces '\x1D', '\x1E', '\x1F' with "\x1D", "\x1E", "\x1F"

replacemarcchars

optional arguments:
  -h, --help                                show this help message and exit
  -replace-method {decimal,unicode,hex}     method for character replacement (default: decimal)

• example:

  replacemarcchars < [BINARY MARC RECORDS/LINES FROM E.G. JSON VALUE] > [TRUE BINARY MARC]
  

• clone this git repo or just download the replacemarcchars.py file
• run ./replacemarcchars.py
• for a hackish way to use replacemarcchars system-wide, copy to /usr/local/bin

• via pip:

  sudo -H pip3 install --upgrade [ABSOLUTE PATH TO YOUR LOCAL GIT REPOSITORY OF REPLACEMARCCHARS]
  

  (which provides you replacemarcchars as a system-wide commandline command)