Marty Oehme
6fcf2a750e
Even if session already exists, if we explicitly pass along a session file, we should execute it.
122 lines
2.8 KiB
Bash
Executable file
122 lines
2.8 KiB
Bash
Executable file
#!/bin/sh
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#
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# Attach to a tmux session, or create it if it doesnt exist
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if [ "$1" = '-h' ] || [ "$1" = '--help' ]; then
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cat <<-EOF
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Usage: $0 [FILE] [NAME]
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Attach to an existing tmux session, or bootstrap a new session.
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If no session exists which fits the criteria, this will create a new one and
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load it up obeying the commands contained in the FILE argument passed in. It
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must contain commands which are tmux-command compatible since they will be
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passed to tmux unmodified.
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It will load the default tmux.conf in the following order:
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- XDG_CONFIG_HOME/tmux/tmux.conf (usually ~/.config/tmux/tmux.conf)
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- ~/.tmux.conf
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- /etc/tmux.conf
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Afterwards, it will apply the contents of the FILE argument passed into the command.
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If no FILE argument is passed it will create an empty session, or attach itself to
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the session specified.
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If no NAME argument is passed it will automatically create a session name from the
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FILE argument passed.
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EOF
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exit 0
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fi
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# Make tmux obey the XDG specification on startup
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if [ -e "$XDG_CONFIG_HOME/tmux/tmux.conf" ]; then
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start="tmux -f $XDG_CONFIG_HOME/tmux/tmux.conf"
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else
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start=tmux
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fi
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_file_exists() {
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if [ -f "$1" ]; then
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true
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else
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false
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fi
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}
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_not_in_tmux() {
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[ -z "$TMUX" ]
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}
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_session_exists() {
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if tmux has-session -t "$session_name" > /dev/null 2>&1; then
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true
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else
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false
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fi
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}
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_create_detached_session() {
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($start new-session -d -s "$session_name")
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}
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_load_session_file() {
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xargs -L1 tmux < "$session_file"
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}
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_set_session_vars() {
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if [ "$#" -eq 2 ]; then
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session_file=${1}
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if ! _file_exists "$session_file"; then
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echo "$0: can not source configuration file: '${session_file}' does not exist."
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exit 1
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fi
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session_name=${2}
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elif [ "$#" -eq 1 ]; then
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if _file_exists "${1}"; then
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session_file=${1}
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else
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session_name=${1}
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fi
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fi
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# set default session name if none was passed
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if [ -z "$session_name" ]; then
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# only if we have a filename should we append it to the session name
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if [ -n "$session_file" ]; then
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fname=/$(basename "$session_file" .conf)
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fi
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# default to parent directory name / config file name for the session
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session_name=$(basename "$PWD" | sed 's/[^a-zA-Z0-9\-]//g' | tr . -)"$fname"
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fi
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}
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_attach_or_create() {
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# first create a new session if one doesn't exist
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if ! _session_exists; then
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_create_detached_session
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fi
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_load_session_file
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# then attach or switch to the session
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if _not_in_tmux; then
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$start attach -t "$session_name"
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else
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$start switch-client -t "$session_name"
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fi
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_unset_functions
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}
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_unset_functions() {
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unset _set_session_vars
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unset _attach_or_create
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unset _load_session_file
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unset _create_detached_session
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unset _session_exists
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unset _not_in_tmux
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unset _file_exists
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}
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_set_session_vars "$@"
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_attach_or_create
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exit 0
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