emacsclient.sh

#!/bin/sh

#MIT License

#Copyright (c) 2009-2021 Robby Russell and contributors (https://github.com/ohmyzsh/ohmyzsh/contributors)

#Permission is hereby granted, free of charge, to any person obtaining a copy
#of this software and associated documentation files (the "Software"), to deal
#in the Software without restriction, including without limitation the rights
#to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
#copies of the Software, and to permit persons to whom the Software is
#furnished to do so, subject to the following conditions:

#The above copyright notice and this permission notice shall be included in all
#copies or substantial portions of the Software.

#THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
#IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
#FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
#AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
#LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
#OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
#SOFTWARE.
_emacsfun()
{
    # get list of emacs frames.
    frameslist=`emacsclient --alternate-editor '' --eval '(frame-list)' 2>/dev/null | egrep -o '(frame)+'`

    if [ "$(echo "$frameslist" | sed -n '$=')" -ge 2 ] ;then
        # prevent creating another X frame if there is at least one present.
        emacsclient --alternate-editor "" "$@"
    else
        # Create one if there is no X window yet.
        emacsclient --alternate-editor "" --create-frame "$@"
    fi
}


# adopted from https://github.com/davidshepherd7/emacs-read-stdin/blob/master/emacs-read-stdin.sh
# If the second argument is - then write stdin to a tempfile and open the
# tempfile. (first argument will be `--no-wait` passed in by the plugin.zsh)
if [ "$#" -ge "2" -a "$2" = "-" ]
then
    tempfile="$(mktemp --tmpdir emacs-stdin-$USERNAME.XXXXXXX 2>/dev/null \
                || mktemp -t emacs-stdin-$USERNAME)" # support BSD mktemp
    cat - > "$tempfile"
    _emacsfun --no-wait $tempfile
else
    _emacsfun "$@"
fi