128 lines
3.8 KiB
Bash
Executable file
128 lines
3.8 KiB
Bash
Executable file
#!/bin/bash
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hr_msg() {
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printf -- '\n--- %s ---\n\n' "$1" >&2
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}
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debug() {
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if (( DEBUG )); then
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printf '%s\n' "$@" >&2
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fi
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}
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print_debug_info() {
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# DEBUG comes from the environment
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if ! (( DEBUG )); then
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return
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fi
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local msg="${1?}"
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hr_msg "$msg"
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hr_msg Environment
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env | LC_ALL=C sort >&2
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cgroup_path=/proc/$$/cgroup
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if [[ -f $cgroup_path ]]; then
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hr_msg cgroup
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cat "$cgroup_path" >&2
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else
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hr_msg 'NO CGROUP'
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fi
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hr_msg 'Finished debug info'
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}
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print_debug_info 'Initialising'
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cache_dir=$HOME/.clipmenu/
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# It's ok that this only applies to the final directory.
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# shellcheck disable=SC2174
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mkdir -p -m0700 "$cache_dir"
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declare -A last_data
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declare -A last_filename
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while sleep "${CLIPMENUD_SLEEP:-0.5}"; do
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print_debug_info 'About to run selection'
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for selection in clipboard primary; do
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print_debug_info "About to do selection for '$selection'"
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if type -p xsel >/dev/null 2>&1; then
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debug 'Using xsel'
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data=$(xsel --logfile /dev/null -o --"$selection"; printf x)
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else
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debug 'Using xclip'
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data=$(xclip -o -sel "$selection"; printf x)
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fi
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debug "Data before stripping: $data"
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# We add and remove the x so that trailing newlines are not stripped.
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# Otherwise, they would be stripped by the very nature of how POSIX
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# defines command substitution.
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data=${data%x}
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debug "Data after stripping: $data"
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if [[ $data != *[^[:space:]]* ]]; then
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debug "Skipping as clipboard is only blank"
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continue
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fi
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if [[ ${last_data[$selection]} == "$data" ]]; then
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debug 'Skipping as last selection is the same as this one'
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continue
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fi
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# If we were in the middle of doing a selection when the previous poll
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# ran, then we may have got a partial clip.
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possible_partial=${last_data[$selection]}
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if [[ $possible_partial && $data == "$possible_partial"* ]]; then
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debug "$possible_partial is a possible partial of $data"
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debug "Removing ${last_filename[$selection]}"
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rm -- "${last_filename[$selection]}"
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fi
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filename="$cache_dir/$(LC_ALL=C date +%F-%T.%N)"
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last_data[$selection]=$data
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last_filename[$selection]=$filename
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debug "Writing $data to $filename"
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printf '%s' "$data" > "$filename"
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if ! (( NO_OWN_CLIPBOARD )) && [[ $selection != primary ]]; then
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# Take ownership of the clipboard, in case the original application
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# is unable to serve the clipboard request (due to being suspended,
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# etc).
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#
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# Primary is excluded from the change of ownership as applications
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# sometimes act up if clipboard focus is taken away from them --
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# for example, urxvt will unhilight text, which is undesirable.
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#
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# We can't colocate this with the above copying code because
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# https://github.com/cdown/clipmenu/issues/34 requires knowing if
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# we would skip first.
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if type -p xsel >/dev/null 2>&1; then
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xsel --logfile /dev/null -o --"$selection" | xsel -i --"$selection"
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else
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xclip -o -sel "$selection" | xclip -i -sel "$selection"
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fi
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fi
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if ! (( NO_TRANSFER_CLIPBOARD )) && [[ $selection != primary ]]; then
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# Copy every clipboard content into primary clipboard
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if type -p xsel >/dev/null 2>&1; then
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xsel --logfile /dev/null -o --"$selection" | xsel -i --primary
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else
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xclip -o -sel "$selection" | xclip -i -sel primary
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fi
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fi
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done
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done
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