1  ########################################################################
  2  # Colour definitions for parts of $PS1.
  3  
  4  # Do we even have a terminal we can do things to?
  5  we_have_term() {
  6  	[ "$TERM" ] && [ "$TERM" != dumb ]
  7  }
  8  
  9  raw_termattr() {
 10  	if we_have_term; then
 11  		for attr in "$@"; do
 12  			case "$attr" in
 13  			normal)
 14  				tput sgr0
 15  				;;
 16  			red)
 17  				tput setaf 1
 18  				;;
 19  			blue)
 20  				tput setaf 4
 21  				;;
 22  			bold)
 23  				tput bold
 24  				;;
 25  			esac
 26  		done
 27  	fi
 28  }
 29  
 30  # Output terminal attribute changing sequence, if there's a terminal.
 31  # Also output output bash $PS1 sequences to tell bash it's
 32  # non-printing characters.
 33  termattr() {
 34  	printf '\['
 35  	raw_termattr "$@"
 36  	printf '\]'
 37  }
 38  
 39  ########################################################################
 40  # Collect info to show in $PS1
 41  
 42  find_git_root() {
 43  	(
 44  		set -e
 45  		while [ "$(pwd)" != / ]; do
 46  			if [ -d .git ]; then
 47  				pwd
 48  				break
 49  			else
 50  				cd ..
 51  			fi
 52  		done
 53  	)
 54  }
 55  
 56  is_git_repo() {
 57  	case "$(find_git_root)" in
 58  	/*) return 0 ;;
 59  	*) return 1 ;;
 60  	esac
 61  }
 62  
 63  get_git_branch() {
 64  	git branch --no-color |
 65  		awk '
 66          BEGIN { max = 30 }
 67          /^\* / {
 68              name = $2
 69              if (length(name) > max)
 70                  name = "..." substr(name, length(name) - max)
 71              print name
 72          }
 73      '
 74  }
 75  
 76  ########################################################################
 77  # Set window title for terminal emulator, screen.
 78  
 79  set_window_title() {
 80  	case "$TERM" in
 81  	xterm*)
 82  		printf '\033]1;%s\07' "$1" >/dev/tty
 83  		printf '\033]2;%s\07' "$1" >/dev/tty
 84  		;;
 85  	screen)
 86  		printf '\ek%s\e\\' "$1" >/dev/tty
 87  		;;
 88  	esac
 89  }
 90  
 91  ########################################################################
 92  # Dynamically change $PS1 or output other things just before the prompt.
 93  
 94  wrap_if_nonempty() {
 95  	local thing="$1"
 96  	local before="$2"
 97  	local after="$3"
 98  
 99  	if [ -n "$thing" ]; then
100  		printf '%s%s%s' "$before" "$thing" "$after"
101  	fi
102  }
103  
104  define_ps1() {
105  	termattr bold blue
106  	date +%H:%M | tr -d '\n'
107  	local hostname
108  	hostname="$(hostname)"
109  	case "$hostname" in
110  	exolobe3)
111  		printf ' \w '
112  		;;
113  	*)
114  		termattr red
115  		printf ' %s' "$hostname"
116  		termattr bold blue
117  		printf ':\w '
118  		;;
119  	esac
120  	termattr normal
121  
122  	if is_git_repo; then
123  		wrap_if_nonempty "$(get_git_branch)" "$(termattr bold blue)[" "]$(termattr normal)"
124  	fi
125  
126  	termattr bold blue
127  	printf '\$ '
128  	termattr normal
129  }
130  
131  define_window_title() {
132  	printf "%s:" "$(hostname)"
133  	pwd | sed "s,$HOME,~,"
134  }
135  
136  tell_about_exit_code() {
137  	local exit_code="$1"
138  	if [ "$exit_code" != 0 ]; then
139  		raw_termattr bold red
140  		printf '[PREVIOUS COMMAND EXIT: %s]\n' "$exit_code"
141  		raw_termattr normal
142  	fi
143  }
144  
145  prompt_set_window_title() {
146  	set_window_title "$(define_window_title)"
147  }
148  prompt_command() {
149  	tell_about_exit_code "$?"
150  	PS1="$(define_ps1)"
151  	prompt_set_window_title
152  }
153  
154  ###############
155  
156  ulimit -c 0
157  umask 002
158  
159  # Get environment variables from systemd, if any are set.
160  if systemctl --user show-environment >/dev/null 2>&1; then
161  	. <(systemctl --user show-environment | sed 's/^/export /')
162  fi
163  
164  if command -v emacs >/dev/null; then
165  	export EDITOR=emacs
166  else
167  	export EDITOR=vi
168  fi
169  export PATH="/scratch/dist/rust/bin:$HOME/dist/rust/bin:$HOME/dist/rust/bin:$HOME/.cargo/bin:$PATH:$HOME/bin:$HOME/.local/bin:$HOME/.radicle/bin:/usr/games"
170  export PAGER=less
171  export LESSCHARSET=utf-8
172  export HISTCONTROL=ignoredups
173  export HISTFILESIZE=500
174  export DEBEMAIL=liw@liw.fi
175  export VIRSH_DEFAULT_CONNECT_URI=qemu:///system
176  export LANG=en_US.UTF-8
177  export LC_COLLATE=fi_FI.UTF-8
178  export LC_TIME=en_GB
179  export ANSIBLE_ROLES_PATH="$HOME/pers/puomi/git/roles:$HOME/pers/debian-ansible/roles"
180  export PYTHONDONTWRITEBYTECODE=1
181  export STARSHIP_CONFIG=~/.config/starship/config.toml
182  unset HISTFILE
183  
184  if [ -e /scratch/cargo-cache ]; then
185  	export CARGO_TARGET_DIR="/scratch/cargo-cache"
186  elif [ -e "$HOME/tmp/cargo" ]; then
187  	export CARGO_TARGET_DIR="$HOME/tmp/cargo"
188  elif [ -e "$HOME/cargo" ]; then
189  	export CARGO_TARGET_DIR="$HOME/cargo"
190  fi
191  
192  PROMPT_DIRTRIM=1
193  
194  set +H
195  if [ -n "$PS1" ]; then
196  	bind -r ''
197  fi
198  
199  gotcmd() {
200  	command -v "$1" >/dev/null
201  }
202  
203  if gotcmd starship; then
204  	export PROMPT_COMMAND=prompt_set_window_title
205  	eval "$(starship init bash)"
206  else
207  	export PROMPT_COMMAND=prompt_command
208  fi
209  
210  if [ -e "$HOME/.cargo/env" ]; then
211  	. "$HOME/.cargo/env"
212  fi
213  
214  if command -v pathdedup >/dev/null; then
215  	PATH="$(pathdedup)"
216  fi
217  
218  if gotcmd zoxide; then
219  	eval "$(zoxide init --hook prompt bash)"
220  fi