252 lines
11 KiB
Nix
252 lines
11 KiB
Nix
{ ... }:
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{
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programs.bash = {
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enable = true;
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initExtra = ''
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[ "''${BASH_COMPLETION_VERSINFO-}" ] || unset -v BASH_COMPLETION_VERSINFO
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[ "$DISPLAY" ] && xset r rate 200 60
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##################### user specific aliases and functions ######################
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if [ -d ~/.bashrc.d ]; then
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for rc in ~/.bashrc.d/*; do
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bn=''${rc##*/}
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if [ -f "''$rc" ] && [ -r "''$rc" ] && [ ! "''${bn::1}" = '.' ]; then
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\. "''$rc"
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fi
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done
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fi
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unset rc bn
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########################### shell settings & options ###########################
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set -E
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set -o pipefail
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shopt -s nullglob dotglob globstar extglob
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shopt -s autocd cdable_vars cdspell
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shopt -s checkwinsize
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shopt -s lastpipe
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shopt -s inherit_errexit
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shopt -s no_empty_cmd_completion
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shopt -s histreedit
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shopt -s lithist
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shopt -u histverify
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_have bash_abbr && shopt -u expand_aliases
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############################### shell variables ################################
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FIGNORE='.o'
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HISTCONTROL=ignoreboth:erasedups
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HISTTIMEFORMAT='%y-%m-%d %H:%M:%S '
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HISTSIZE=-1
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HISTFILESIZE=-1
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HISTFILE=''$HOME/.''${USER:-default}_bash_history
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############################ environment variables #############################
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export PYTHON_BASIC_REPL=1 # I'm good at readline so I'm gonna use readline whereever possible!
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export LESS='-SRFX'
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export PAGER='less' GIT_PAGER='less' MANPAGER='less' SYSTEMD_PAGER='less'
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export BAT_PAGER='''
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export EDITOR='vim' VISUAL='vim' FCEDIT='vim' SYSTEMD_EDITOR='vim'
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export PATH
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########################## generally useful functions ##########################
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take () {
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: 'Idempotently create directory recursively and cd into it'
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local out
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out=''$(set -o pipefail && mkdir -vp "''$@" | tail -1) || return
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printf '%s\n' "''$out"
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eval "out=''${out#"mkdir: created directory "}"
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CDPATH= cd "''${out:-''${@: -1}}"
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}
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cd () {
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: 'Run cd and if it succeeds, run ls'
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builtin cd "''$@" && command ls --color -Ah
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}
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drop_caches () {
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: 'Drop pagecache, dentries and inodes'
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: 'https://unix.stackexchange.com/a/87909'
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echo 3 | sudo tee /proc/sys/vm/drop_caches >/dev/null
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}
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respawn_shell () {
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: 'Intelligently respawn shell'
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: 'pure posix sh without forking'
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if [ "''${BASH_VERSINFO-}" ] && command -v bash 1>/dev/null 2>&1; then
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if _is_login_shell; then
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exec bash -l
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else
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exec bash
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fi
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: 'TODO: Implement more detection mechanisms for various shells (zsh, etc.)'
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elif [ -x /proc/self/exe ]; then
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if _is_login_shell; then
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exec -l /proc/self/exe
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else
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exec /proc/self/exe
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fi
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elif command -v "''${0#-}" 1>/dev/null 2>&1; then
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: 'TODO: Make it work with shells that actually start with a dash (unlikely, but possible)'
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printf 'Warning: replacing current shell with unreliable ''$0, which is: %s\n' "''$0"
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if _is_login_shell; then
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exec -l "''${0#-}"
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else
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exec "''${0#-}"
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fi
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else
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printf 'Error: Don'\'''t know how to reliably replace this shell, not exec'\'''ing and not exiting\n'
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printf 'You might want to manually run `exec [-l] "''$SHELL"`, however, `''$SHELL` might not be the shell you are currently running'
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return 1
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fi
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}
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export_bashrc () {
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CDPATH= command cd ~/.bashrc.d/ || return
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: 'Not using an associative array because those are not sorted!'
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declare -ar plugins=(*)
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[[ ''${#plugins[@]} -eq 0 ]] || [[ ''${#plugins} -eq 1 && ''${plugins[0]} = '*' ]] && return
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local IFS=' '
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declare -Ai selected
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declare plugin
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for plugin in "''${plugins[@]}"; do
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case "''$plugin" in
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# Comment below case match if you don'\'''t want to have a pre-selection of plugins to export
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# Requires `shopt -s extglob`
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(+([0-9])-@(util|redact|prompt|docker-tools|funcs|init-and-complete|general-aliases|bash-abbr)) selected[''$plugin]=1 ;;
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(*) selected[''$plugin]=
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esac
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done
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declare -a plugins_with_selection
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while :; do
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local PS3='Which plugins do you want to export/not export (enter a single number)? '
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plugins_with_selection=()
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for plugin in "''${plugins[@]}"; do
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if [[ ''${selected[''$plugin]} -eq 0 ]]; then
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plugins_with_selection+=(''$'\033[31m'''$plugin''$'\033[m')
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else
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plugins_with_selection+=(''$'\033[32m'''$plugin''$'\033[m')
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fi
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done
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select plugin in ''$'\033[31mQUIT\033[m' ''$'\033[34mDONE\033[m' "''${plugins_with_selection[@]}"; do
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plugin=''${plugin#''$'\033[3'[0-7]m}
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plugin=''${plugin%''$'\033[m'}
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[[ -z ''$REPLY || ''$plugin = QUIT || ''$plugin = DONE ]] && break 2
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[[ -z ''$plugin ]] && { echo "Please enter a number (1-''$((''${#plugins[@]}+2)))."; continue; }
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selected[''$plugin]=1-''${selected[''$plugin]}
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break
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done
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[[ -z ''$REPLY || ''$plugin = QUIT || ''$plugin = DONE ]] && break
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done
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[[ -z ''$REPLY || ''$plugin = QUIT ]] && { echo "Aborting"; return; }
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declare -a exported_plugins=()
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for plugin in "''${!selected[@]}"; do
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if [[ ''${selected[''$plugin]} -eq 1 ]]; then
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exported_plugins+=(".bashrc.d/''$plugin")
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fi
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done
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command rm -vf "exported_bashrc.tar.gz"
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CDPATH= command cd - >/dev/null
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CDPATH= command cd ~
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as_base64=''$(command tar -cvhzf - ".bashrc" "''${exported_plugins[@]}" | base64 -w0)
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CDPATH= command cd - >/dev/null
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as_base64_wrapped=''$(printf %s "''$as_base64" | sed 's#.\{,70\}#'\'''&'\'''\\\n#g' | sed ''\'''$s#\\$##')
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command install -m775 /dev/stdin ~/bashrc_installer.sh <<-EOF
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#! /usr/bin/env bash
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set -e
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[ "\''$BASH_VERSINFO" ] && command -v declare >/dev/null 2>&1 && command declare -p BASH_VERSINFO | { IFS=' ' read -r _ flags _; case "\''$flags" in (*r*) ;; (*) false; esac; } || { printf 'This installer must be run with bash!\\n'; exit 1; }
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command -v bash >/dev/null 2>&1 || { printf 'bash must be installed!\\n'; exit 2; }
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as_base64=''$as_base64_wrapped
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tempdir=\''$(mktemp -d)
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trap 'rm -rf -- "\''$tempdir"' EXIT
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cd -- "\''$tempdir"
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base64 -d <<< "\''$as_base64" | tar xzf -
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create_dir_and_move () {
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src=\''$1
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dst=\''$2
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[ ! -f "\''$src" ] && { printf '%s\\n' "Source argument '\''$src' is not a regular file"; return 1; }
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dst_dir=\''$(dirname -- "\''${dst//[^!-~]/-}")
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[ ! -d "\''$dst_dir" ] && { printf '%s\\n' "Trying to create destination directory '\''$dst_dir'"; mkdir -p -- "\''$dst_dir"; } || :
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[ -d "\''$dst_dir" ] && mv -v -t "\''$dst_dir" -- "\''$src" || :
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}
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ask_overwrite () {
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file1=\''$1
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file2=\''$2
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if [[ ! -e \''$file2 ]]; then
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create_dir_and_move "\''$file1" "\''$file2"
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elif [[ -d \''$file2 ]]; then
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printf 'WARNING: Destination file %s is a directory! Skipping this file\\n' "\''${file2@Q}"
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return
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elif [[ ! -f \''$file2 ]]; then
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printf 'WARNING: Destination file %s is not a regular file! Skipping this file\\n' "\''${file2@Q}"
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return
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elif ! diff -q "\''$file1" "\''$file2"; then
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printf 'File to be installed (%s) differs from already installed file (%s)\\n' "\''${file1@Q}" "\''${file2@Q}"
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read -p 'Press enter to show diff. ' || :
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diff --color -u "\''$file1" "\''$file2" || :
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printf 'Giving you a plain bash shell to resolve the situation. Once done, just exit.\\n'
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printf 'After you exit, the destination file WILL BE FORCEFULLY OVERWRITTEN!!!\n'
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read -p 'Press enter to continue in the shell. ' || :
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bash --rcfile <(printf 'cd; printf "You are running bash version \''$BASH_VERSION. Your CWD is \''$PWD. Your HOME is \''$HOME. You are \''$USER and HOSTNAME is \''$HOSTNAME.\\nUse this bash shell to make changes, backups, etc.\\nThen just exit.\\n"') --noprofile || :
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printf 'Destination file %s will be overwritten. Continue? ' "\''${file2@Q}"
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read || :
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create_dir_and_move "\''$file1" "\''$file2"
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else
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printf 'File %s was not changed\\n' "\''${file2@Q}"
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fi
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}
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ask_overwrite .bashrc ~/.bashrc
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set +f
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shopt -s nullglob dotglob
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for file in .bashrc.d/*; do
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ask_overwrite "\''$file" ~/"\''$file"
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done
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cd - >/dev/null
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read -p 'Self destruct (y/N)? ' choice || :
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[[ \''$choice = y ]] && { printf 'Trying to rm myself (%s)\\n' "\''${0@Q}"; rm -- "\''$0" && printf 'Success\\n' || printf 'Failed. Not trying further\\n'; }
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EOF
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}
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#################################### binds #####################################
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bind '"\e\C-r": kill-region' \
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'"\C-x\C-k": kill-whole-line' \
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'"\e\C-p": history-search-backward' \
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'"\e\C-n": history-search-forward' \
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'"\eP": history-substring-search-backward' \
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'"\eN": history-substring-search-forward' \
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'"\C-x\C-d": "\e#\C-m exit\C-m"' \
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'"\ej": "\C-e |& tac | \\cat -n | tac | \\cat -n | less -SFXR\C-m"' \
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'"\eX": ">/dev/null "' \
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'"\t": menu-complete' \
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'"\e[Z": menu-complete-backward' \
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'"\C-x\C-r": forward-search-history' \
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'set show-all-if-ambiguous on' \
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'set completion-query-items 0' \
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'set menu-complete-display-prefix on' \
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'set colored-completion-prefix on' \
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'set colored-stats on'
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################################## autoclear ###################################
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# TODO
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# prank () {
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# line_up_until_cursor=''${READLINE_LINE::READLINE_POINT}
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# line_after_cursor=''${READLINE_LINE:READLINE_POINT}
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# if [[ ''$((RANDOM % 5)) -eq 0 ]]; then
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# READLINE_LINE="''$line_up_until_cursor''$line_after_cursor"
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# #READLINE_LINE="''$line_up_until_cursor''${1^}''$line_after_cursor"
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# READLINE_POINT=''$((READLINE_POINT+1))
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# else
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# READLINE_LINE="''$line_up_until_cursor''$1''$line_after_cursor"
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# READLINE_POINT=''$((READLINE_POINT+1))
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# fi
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# }
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# bind -x '" ": prank " "'
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# bind -x '"a": prank "a"'
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'';
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};
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}
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