fzf-scripts/ix

#!/usr/bin/env bash

declare esc=$'\033'
declare c_reset="${esc}[0m"
declare c_red="${esc}[31m"
declare OPTIND
declare opts=()
declare id

usage() {
  more <<'HELP'
ix [OPTIONS]

-l             list all pastes, uses fzf for interactive use
-d [id]        delete the paste at [id]
-i [id]        replaces the paste with stdin
-h             print this help
HELP
}

err() {
  printf "${c_red}%s${c_reset}\n" "$*" >&2
}

die() {
  exit 1
}

has() {
  local verbose=false
  if [[ $1 == '-v' ]]; then
    verbose=true
    shift
  fi
  for c in "$@"; do c="${c%% *}"
    if ! command -v "$c" &> /dev/null; then
      [[ "$verbose" == true ]] && err "$c not found"
      return 1
    fi
  done
}

select-from() {
  local cmd='command -v'
  for a in "$@"; do
    case "$a" in
      -c)
        cmd="$2"
        shift 2
        ;;
    esac
  done
  for c in "$@"; do
    if $cmd "${c%% *}" &> /dev/null; then
      echo "$c"
      return 0
    fi
  done
  return 1
}

has_account() {
  grep -qF 'ix.io' ~/.netrc
}

create_account() {
  echo "It seems you don't have a ~/.netrc with ix.io in it. Let's make one!"
  read -r -p 'enter a username: ' username
  read -rs -p 'enter a password (this will be hashed with sha256sum): ' password
  password=$(sha256sum <<< "$password" | awk '{print $1}')
  echo ''
  tee -a  ~/.netrc <<< "machine ix.io login $username password $password"
  chmod 600 ~/.netrc
  echo "$username"
}

get_user_name() {
  awk '"ix.io"==$2{print $4}' ~/.netrc
}

get_pastes() {
  curl -s "http://ix.io/user/$1" |
    grep -A1 -P '\<a href="\/[a-zA-Z0-9]+"\>' |
    awk -F'--' '
      BEGIN {FS="<a href=\""}
      /a href/{sub(/\">\[r\]<\/a>/, "\t", $2); printf "http://ix.io" $2}
      /@/{sub(/^\s+/, "", $0); print}
    '
}

list_pastes() {
  local highlighter
  highlighter=$(select-from 'highlight -q --force -O ansi' pygmentize)
  get_pastes "$(get_user_name)" | fzf \
    --inline-info --cycle \
    --header='Ctrl-E = edit; Ctrl-V = view; Ctrl-D = delete' \
    --preview="p={}; curl -s \"\${p## *}\" | head -n\$LINES ${highlighter:+ | $highlighter}" \
    --bind 'space:jump' \
    --bind 'j:down' --bind 'k:up' \
    --bind 'q:abort' \
    --bind "Ctrl-V:execute:p={}; p=\"\${p## *}\"; less -R < <(curl -s \"\$p\" ${highlighter:+ | $highlighter}) > /dev/tty" \
    --bind 'Ctrl-E:execute:p={}; p="${p## *}"; curl -s "$p" | vipe > /dev/tty | ix -i "${p##*/}"' \
    --bind 'Ctrl-D:execute:p={}; p="${p## *}"; ix -d "${p##*/}"'
}

has -v curl || die

has_account || create_account

[[ -e ~/.netrc ]] && opts+=( '-n' )

while getopts ":hld:i:n:" x; do
  case "$x" in
    h) usage; exit ;;
    d) curl "${opts[@]}" -X DELETE "ix.io/$OPTARG"; exit ;;
    l)
      if [[ -z "$OPTARG" && -e ~/.netrc ]]; then
        list_pastes | awk '{print $2}' | tee /dev/tty | xclip
      else
        die 'no netrc found'
      fi
      exit ;;
    i) opts+=( -X PUT ); id="$OPTARG" ;;
    n) opts+=( -F "read:1=$OPTARG" ) ;;
  esac
done
shift $(( OPTIND - 1))

if [[ -t 0 ]]; then
  if [[ -n "$1" ]]; then
    filename="$1"
    shift
    curl "${opts[@]}" -F f:1=@"$filename" "$@" "ix.io/$id"
    exit
  fi
  echo "^C to cancel, ^D to send."
fi

curl "${opts[@]}" -F f:1='<-' "$@" "ix.io/$id"