code.delx.au - dotfiles/blob - .bash/colors

   1 #! bash
   2
   3 # This file is responsible for setting up the pretty colours in GNU 'ls' and
   4 # the bash prompt. Depending on whether you use a light on dark, or dark on
   5 # light terminal you want different colour schemes. Rxvt and some other
   6 # set the COLORFGBG environment variable to make autodetecting this easy.
   7
   8 # These scripts attempt to detect the terminal colours, and then set COLORFGBG
   9 # if it isn't already set so that programs like vim can set the correct colours.
  10
  11 # If your terminal isn't detected correctly then you can run lightterm or
  12 # darkterm to get the colours right. The default can be adjusted below.
  13
  14 # Set to 0 for light background terminal colours by default
  15 # Set to 1 for dark background terminal colours by default
  16 DEFAULTDARK=1
  17
  18
  19 # Terminals that we want coloured prompts in
  20 [ -n "${COLORTERM}"          ] && PS1_COLOR=1
  21 [ "${TERM}" = "linux"        ] && DARK="${DARK:-1}"
  22 [ "${TERM}" = "screen.linux" ] && DARK="${DARK:-1}"
  23 [ "${TERM}" = "putty"        ] && DARK="${DARK:-1}"
  24 [ "${TERM}" = "cygwin"       ] && DARK="${DARK:-1}"
  25 [ "$(tput colors)" -gt 2     ] && PS1_COLOR=1
  26
  27 # Override COLORFGBG (probably used the darkterm or lightterm function
  28 if [ -n "${DARK}" ]; then
  29         unset COLORFGBG
  30 else
  31         DARK="${DEFAULTDARK}"
  32 fi
  33 unset DEFAULTDARK
  34
  35 # If COLORFGBG is set, use it to determine the terminal type, DARK=0 is
  36 # dark on light, DARK=1 is light on dark.
  37 if [ -n "${COLORFGBG}" ]; then
  38         BG="$(echo "$COLORFGBG" | sed 's/.*;//')"
  39         if ! [ "${BG}" -ge 0 ]; then
  40                 if [ "${BG}" = "white" ]; then
  41                         DARK=0
  42                 else
  43                         DARK=1
  44                 fi
  45         elif [ "${BG}" -ge 0 -a "${BG}" -le 6   -o "${BG}" -eq 8 ]; then
  46                 DARK=1
  47         else
  48                 DARK=0
  49         fi
  50         unset BG
  51 else
  52         # Otherwise we just do our best based on the setting of DARK
  53         if [ ${DARK} -eq 0 ]; then
  54                 export COLORFGBG="0;15"
  55         else
  56                 export COLORFGBG="15;0"
  57         fi
  58 fi
  59
  60 # Set the prompt colour, and the colors for the 'ls' command appropriately,
  61 # depending on the background of the terminal.
  62 if [ ${PS1_COLOR:-0} -eq 1 ]; then
  63         eval $(TERM=xterm dircolors 2> /dev/null)
  64
  65         if [ -z "$debian_chroot" -a -r /etc/debian_chroot ]; then
  66                 debian_chroot=$(cat /etc/debian_chroot)
  67         fi
  68         PS1='${debian_chroot:+($debian_chroot)}'
  69         PS1="$PS1"'\[\033[00;31m\]\u@\h\[\033[00m\]:\[\033[00;34m\]\w\[\033[00m\]'
  70         PS1="$PS1"'\[\033[00;36m\]$(__git_ps1 2>/dev/null)\[\033[00m\]'
  71         PS1="$PS1"'\n\$ '
  72
  73         if [ ${DARK} -eq 0 ]; then
  74                 LS_COLORS="$(echo "${LS_COLORS}" | sed 's/01;/00;/g')"
  75                 LSCOLORS="exfxcxdxbxegedabagacad" # BSD ls
  76         else
  77                 # We need to bold the LS_COLORS and PS1 environment variables
  78                 # so they show up on a dark terminal
  79                 LS_COLORS="$(echo "${LS_COLORS}" | sed 's/00;/01;/g')"
  80                 LSCOLORS="ExFxCxDxBxEGEDABAGACAD" # BSD ls
  81                 PS1="$(echo "${PS1}" | sed 's/00;/01;/g')"
  82         fi
  83
  84         export LS_COLORS
  85         export LSCOLORS
  86 fi
  87 unset PS1_COLOR
  88 unset DARK
  89