103 lines
2 KiB
Bash
Executable file
103 lines
2 KiB
Bash
Executable file
#!/bin/bash
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# tmux requires unrecognized OSC sequences to be wrapped with DCS tmux;
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# <sequence> ST, and for all ESCs in <sequence> to be replaced with ESC ESC. It
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# only accepts ESC backslash for ST.
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function print_osc() {
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if [[ $TERM == screen* ]] ; then
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printf "\033Ptmux;\033\033]"
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else
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printf "\033]"
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fi
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}
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# More of the tmux workaround described above.
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function print_st() {
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if [[ $TERM == screen* ]] ; then
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printf "\a\033\\"
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else
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printf "\a"
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fi
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}
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# print_image filename inline base64contents
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# filename: Filename to convey to client
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# inline: 0 or 1
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# base64contents: Base64-encoded contents
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function print_image() {
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print_osc
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printf '1337;File='
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if [[ -n "$1" ]]; then
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printf 'name='`echo -n "$1" | base64`";"
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fi
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if $(base64 --version 2>&1 | grep GNU > /dev/null)
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then
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BASE64ARG=-d
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else
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BASE64ARG=-D
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fi
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echo -n "$3" | base64 $BASE64ARG | wc -c | awk '{printf "size=%d",$1}'
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printf ";inline=$2"
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printf ";width=50"
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printf ":"
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echo -n "$3"
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print_st
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printf '\n'
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}
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function error() {
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echo "ERROR: $*" 1>&2
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}
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function show_help() {
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echo "Usage: imgcat filename ..." 1>& 2
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echo " or: cat filename | imgcat" 1>& 2
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}
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## Main
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if [ -t 0 ]; then
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has_stdin=f
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else
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has_stdin=t
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fi
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# Show help if no arguments and no stdin.
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if [ $has_stdin = f -a $# -eq 0 ]; then
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show_help
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exit
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fi
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# Look for command line flags.
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while [ $# -gt 0 ]; do
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case "$1" in
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-h|--h|--help)
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show_help
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exit
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;;
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-*)
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error "Unknown option flag: $1"
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show_help
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exit 1
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;;
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*)
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if [ -r "$1" ] ; then
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print_image "$1" 1 "$(base64 < "$1")"
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else
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error "imgcat: $1: No such file or directory"
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exit 2
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fi
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;;
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esac
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shift
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done
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# Read and print stdin
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if [ $has_stdin = t ]; then
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print_image "" 1 "$(cat | base64)"
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fi
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echo
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echo
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exit 0
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