File: cio.sh
   1 #!/bin/sh
   2 
   3 # The MIT License (MIT)
   4 #
   5 # Copyright © 2024 pacman64
   6 #
   7 # Permission is hereby granted, free of charge, to any person obtaining a copy
   8 # of this software and associated documentation files (the “Software”), to deal
   9 # in the Software without restriction, including without limitation the rights
  10 # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  11 # copies of the Software, and to permit persons to whom the Software is
  12 # furnished to do so, subject to the following conditions:
  13 #
  14 # The above copyright notice and this permission notice shall be included in
  15 # all copies or substantial portions of the Software.
  16 #
  17 # THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18 # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19 # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  20 # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21 # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  22 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  23 # SOFTWARE.
  24 
  25 
  26 # cio
  27 #
  28 # Clipboard IO automatically figures out whether to copy/paste the text
  29 # clipboard, depending on the piping of its standard input/output.
  30 #
  31 # When both its standard input/output are piped, it first updates the text
  32 # clipboard, and then emits its new value to stdout.
  33 #
  34 # When run on its own (unpiped), it just emits the current text clipboard
  35 # value to stdout.
  36 
  37 
  38 # handle help option(s)
  39 case "$1" in
  40     -h|--h|-help|--help)
  41         awk '/^# +cio/, /^$/ { gsub(/^# ?/, ""); print }' "$0"
  42         exit 0
  43     ;;
  44 esac
  45 
  46 get_clip() {
  47     if [ -e /dev/clipboard ]; then
  48         cat /dev/clipboard
  49         return $?
  50     fi
  51     if [ "$(which wclip)" ]; then
  52         wclip -o
  53         return $?
  54     fi
  55     if [ "$(which xclip)" ]; then
  56         xclip -sel clip -o
  57         return $?
  58     fi
  59     if [ "$(which pbpaste)" ]; then
  60         pbpaste
  61         return $?
  62     fi
  63     if [ "$(which powershell.exe)" ]; then
  64         # powershell.exe -NoProfile -c Get-Clipboard
  65         powershell.exe -NoProfile -c Get-Clipboard | python.exe -c '
  66 from sys import stdin
  67 for l in stdin:
  68     print(l, end="")'
  69         return $?
  70     fi
  71 
  72     printf "\e[31mcan't use the clipboard\e[0m\n" > /dev/stderr
  73     exit 1
  74 }
  75 
  76 set_clip() {
  77     if [ -e /dev/clipboard ]; then
  78         cat > /dev/clipboard
  79         return $?
  80     fi
  81     if [ "$(which wclip)" ]; then
  82         wclip
  83         return $?
  84     fi
  85     if [ "$(which xclip)" ]; then
  86         xclip -sel clip
  87         return $?
  88     fi
  89     if [ "$(which pbcopy)" ]; then
  90         pbcopy
  91         return $?
  92     fi
  93 
  94     if [ "$(which powershell.exe)" ]; then
  95         # powershell.exe -NoProfile -c Set-Clipboard -Value "$(cat)"
  96         powershell.exe -NoProfile -c '
  97         [console]::InputEncoding = [console]::OutputEncoding = New-Object System.Text.UTF8Encoding
  98         $Input | Set-Clipboard'
  99         return $?
 100     fi
 101 
 102     printf "\e[31mcan't use the clipboard\e[0m\n" > /dev/stderr
 103     exit 1
 104 }
 105 
 106 # handle both `... | cio` and `... | cio | ...`
 107 if [ -p /dev/stdin ]; then
 108     cat | set_clip
 109     # ... | cio | ...
 110     if [ -p /dev/stdout ]; then
 111         get_clip
 112     fi
 113     exit $?
 114 fi
 115 
 116 # handle `cio | ...`
 117 if [ -p /dev/stdout ]; then
 118     get_clip
 119     exit $?
 120 fi
 121 
 122 # handle `cio ...`
 123 if [ $# -gt 0 ]; then
 124     cat "$@" | set_clip
 125     exit $?
 126 fi
 127 
 128 # handle `cio`
 129 get_clip
 130 exit $?