Gist Command Line Tool for Single File Gists

gist.sh

#!/bin/bash
# 
# Copyright 2016-2021 Martin Goellnitz
# 
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
if [ $(which jq|wc -l) = 0 ] ; then
  echo "To use this tool, jq must be installed."
  exit
fi
if [ "$#" == "0" ]; then
  echo "Gist Command Line Tool 'gist.sh'"
  echo ""
  echo "$0 [-u user] [-t token] filename [Title]"
  echo ""
  echo "If 'filename' points to an existing file, it is uploaded to GitHub with an optional title."
  echo "If 'filename' describes a filename present in the user's gists, it is downloaded."
  echo "If 'filename' is not present, the available snippets of the user are listet."
  echo ""
  echo "  -u user name - default \$GITHUB_COM_USER"
  echo ""
  echo "  -t github api token - default \$GITHUB_COM_TOKEN"
  echo ""
  echo "  -p make gist public (only available on creation)"
  echo ""
  exit 1
fi

# defaults
API="https://api.github.com"
GITHUBUSER=$GITHUB_COM_USER
TOKEN=$GITHUB_COM_TOKEN
PUBLIC=false

PSTART=`echo $1|sed -e 's/^\(.\).*/\1/g'`
while [ "$PSTART" = "-" ] ; do
  if [ "$1" = "-u" ] ; then
    shift
    GITHUBUSER="$1"
  fi
  if [ "$1" = "-t" ] ; then
    shift
    TOKEN="$1"
  fi
  if [ "$1" = "-p" ] ; then
    PUBLIC="true"
  fi
  shift
  PSTART=`echo $1|sed -e 's/^\(.\).*/\1/g'`
done
FILEPATH=$1
TITLE=$2
if [ -z "$GITHUBUSER" ] ; then
  echo "Cannot work without the context of a github user name. Sorry..."
  exit 1
fi

if [ -z "$FILEPATH" ] ; then
  echo "Listing gists of $GITHUBUSER"
  # curl -k -H "Authorization: token $TOKEN" ${API}/users/${GITHUBUSER}/gists 2> /dev/null|jq '.[]'
  curl -k -H "Authorization: token $TOKEN" ${API}/users/${GITHUBUSER}/gists 2> /dev/null|jq '.[]|.description,.files[].filename,""'|sed -e s/^\"//g|sed -e s/\"$//g
else
  FILE=`basename $FILEPATH`
  GID=`curl -k -H "Authorization: token $TOKEN" ${API}/users/${GITHUBUSER}/gists 2> /dev/null \
           |jq '.[]|select(.files["'$FILE'"])|.id'|head -1\
           |sed -e s/^\"//g|sed -e s/\"$//g`
  # echo "gist id: $GID"
  if [ -f $FILEPATH ] ; then    
    # CONTENT=$(cat $FILEPATH|sed -e 's/\"/\\"/g')
    CONTENT=$(sed -e 's/\r//' -e 's/\\/\\\\/g' -e's/\t/\\t/g' -e 's/"/\\"/g' -e 's/%/%%/g' "${FILEPATH}" | awk '{ printf($0 "\\n") }')
    if [ -z "$GID" ] ; then
      if [ -z "$TITLE" ] ; then
        TITLE=$FILE
      fi
      echo "Creating file '$FILE' with title '$TITLE' for user $GITHUBUSER"
      DATA="{\"description\": \"${TITLE}\", \"public\": ${PUBLIC}, \"files\": { \"${FILE}\": { \"content\" : \"${CONTENT}\" } } }\""
      # echo $DATA
      curl -X POST -k -H "Authorization: token $TOKEN" --data "$DATA" ${API}/gists 2> /dev/null > /dev/null
    else
      if [ -z "$TITLE" ] ; then
        echo "Updating file '$FILE' for user $GITHUBUSER"
        DATA="{\"files\": { \"${FILE}\": { \"content\" : \"${CONTENT}\" } } }\""
      else
        echo "Updating file '$FILE' with title '$TITLE' for user $GITHUBUSER"
        DATA="{\"description\": \"${TITLE}\", \"files\": { \"${FILE}\": { \"content\" : \"${CONTENT}\" } } }\""
      fi
      # echo $DATA
      # curl -X PATCH -k -H "Authorization: token $TOKEN" --data "$DATA" ${API}/gists/${GID}
      curl -X PATCH -k -H "Authorization: token $TOKEN" --data "$DATA" ${API}/gists/${GID} 2> /dev/null > /dev/null
    fi
  else
    DL=`curl -k -H "Authorization: token $TOKEN" ${API}/users/${GITHUBUSER}/gists 2> /dev/null \
             |jq '.[]|select(.files["'$FILE'"])|.files["'$FILE'"].raw_url'|head -1\
             |sed -e s/^\"//g|sed -e s/\"$//g`
    # echo "$GID: $DL"
    if [ ! -z "$DL" ] ; then
      echo "Fetching file '$FILE' from $GITHUBUSER as '$FILEPATH'"
      curl -k -H "Authorization: token $TOKEN" ${DL}  2> /dev/null > $FILEPATH
    fi
  fi
fi