Add clipboard script

1 files changed, 139 insertions, 0 deletions

diff --git a/cb b/cb
new file mode 100755
index 0000000..d8823a8
--- /dev/null
+++ b/cb
@@ -0,0 +1,139 @@
+#!/bin/bash
+
+# from: https://gist.github.com/RichardBronosky/56d8f614fab2bacdd8b048fb58d0c0c7
+
+LINUX_copy() {
+  cat | xclip -selection clipboard
+}
+
+LINUX_paste() {
+  xclip -selection clipboard -o
+}
+
+WSL_copy() {
+  cat | /mnt/c/Windows/System32/clip.exe
+}
+
+WSL_paste() {
+  /mnt/c/Windows/System32/WindowsPowerShell/v1.0/powershell.exe Get-Clipboard | sed 's/\r//'
+}
+
+CYGWIN_copy() {
+  cat >/dev/clipboard
+}
+
+CYGWIN_paste() {
+  cat /dev/clipboard
+}
+
+MAC_copy() {
+  cat | pbcopy
+}
+
+MAC_paste() {
+  pbpaste
+}
+
+stdin_is_a_pipe() {
+  [[ -p /dev/stdin ]]
+}
+
+stdin_is_a_tty() {
+  [[ -t 0 ]]
+}
+
+stdin_is_pipe_like() {
+  stdin_is_a_pipe || ! stdin_is_a_tty
+}
+
+stdout_is_pipe_like() {
+  ! stdout_is_a_tty # meaning # it must be a pipe or redirection
+}
+
+stdout_is_a_tty() {
+  [[ -t 1 ]]
+}
+
+requested_open_ended() {
+  [[ ${args[0]:-} == "-" ]]
+}
+
+requested_test_suite() {
+  [[ ${args[0]:-} == "--test" ]]
+}
+
+enable_tee_like_chaining() {
+  # see `man tee`
+  if stdout_is_pipe_like; then
+    ${os}_paste
+  elif requested_open_ended; then
+    ${os}_paste
+    echo
+  fi
+}
+
+prevent_prompt_from_being_on_the_same_line() {
+  if stdout_is_a_tty; then # we don't have to be strict about not altering the output
+    echo
+  fi
+}
+
+detect_os() {
+  if [[ -f /proc/version ]] && grep -iq Microsoft /proc/version; then
+    printf WSL
+  else
+    case "$(uname -s)" in
+    Linux*) printf LINUX ;;
+    Darwin*) printf MAC ;;
+    CYGWIN*) printf CYGWIN ;;
+    esac
+  fi
+}
+
+test_suite() {
+  # setup
+  printf '1234' | ${BASH_SOURCE[0]}
+
+  printf "\n1. output to TTY\n"
+  ${BASH_SOURCE[0]}
+  printf "1234 should be above.\n"
+
+  printf "\n2. output to pipe\n"
+  ${BASH_SOURCE[0]} | cat
+  echo
+  printf "1234 should be above.\n"
+
+  printf "\n3. input from pipe and output to pipe\n"
+  printf '1234' | ${BASH_SOURCE[0]} | cat
+  echo
+  printf "1234 should be above.\n"
+}
+
+function debug() {
+  stdin_is_a_pipe && echo "stdin_is_a_pipe: 1" >>/tmp/ono || echo "stdin_is_a_pipe: 0" >>/tmp/ono
+  stdin_is_a_tty && echo "stdin_is_a_tty: 1" >>/tmp/ono || echo "stdin_is_a_tty: 0" >>/tmp/ono
+  stdin_is_pipe_like && echo "stdin_is_pipe_like: 1" >>/tmp/ono || echo "stdin_is_pipe_like: 0" >>/tmp/ono
+  stdout_is_pipe_like && echo "stdout_is_pipe_like: 1" >>/tmp/ono || echo "stdout_is_pipe_like: 0" >>/tmp/ono
+  stdout_is_a_tty && echo "stdout_is_a_tty: 1" >>/tmp/ono || echo "stdout_is_a_tty: 0" >>/tmp/ono
+  echo >>/tmp/ono
+}
+
+main() {
+  os="$(detect_os)"
+  if stdin_is_pipe_like; then
+    "${os}_copy"
+    enable_tee_like_chaining
+  else # stdin is not pipe-like
+    "${os}_paste"
+    prevent_prompt_from_being_on_the_same_line
+  fi
+}
+
+args=("$@")
+if requested_test_suite; then
+  export DEBUG=1
+  test_suite
+else
+  [[ ${DEBUG:-} == 1 ]] && debug
+  main
+fi