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. It also sets COLORFGBG to give programs like vim an idea
   5 # of the terminal colours to use. If your terminal isn't detected correctly
   6 # then you can run lightterm or darkterm to get the colours right. To do this
   7 # automatically try changing the table below.
   8
   9 # Terminals that we want coloured prompts in
  10 [ -n "$COLORTERM"           ] && PS1_COLOR=1
  11 [ "$TERM" = "linux"         ] && PS1_COLOR=1 && DARK=1
  12 [ "$TERM" = "screen"        ] && PS1_COLOR=1
  13 [ "$TERM" = "xterm"         ] && PS1_COLOR=1
  14 [ "$TERM" = "xterm-color"   ] && PS1_COLOR=1
  15 [ "$TERM" = "rxvt"          ] && PS1_COLOR=1
  16 [ "$TERM" = "rxvt-unicode"  ] && PS1_COLOR=1
  17
  18 # Override COLORFGBG (probably used the darkterm or lightterm function
  19 if [ -n "${DARK}" ]; then
  20         unset COLORFGBG
  21 fi
  22
  23 # If COLORFGBG is set, use it to determine the terminal type, DARK=0 is
  24 # dark on light, DARK=1 is light on dark.
  25 if [ -n "$COLORFGBG" ]; then
  26         FGCOLOR=$(echo $COLORFGBG | cut -d ';' -f 1)
  27         BGCOLOR=$(echo $COLORFGBG | cut -d ';' -f 3)
  28         if [ "$FGCOLOR" -gt "$BGCOLOR" ]; then
  29                 DARK=1
  30         fi
  31         unset FGCOLOR
  32         unset BGCOLOR
  33 else
  34 # Otherwise we just do our best based on the setting of DARK, defaulting to
  35 # light on dark, change the :-0 here to :-1 to change the default.
  36         if [ ${DARK:-0} -eq 0 ]; then
  37                 export COLORFGBG="0;default;15"
  38         else
  39                 export COLORFGBG="15;default;0"
  40         fi
  41 fi
  42
  43 # Set the prompt colour, and the colors for the 'ls' command appropriately,
  44 # depending on the background of the terminal.
  45 if [ ${PS1_COLOR:-0} -eq 1 ]; then
  46         eval $(dircolors 2> /dev/null)
  47         PS1='\[\033[00;31m\]\u@\h\[\033[00m\]:\[\033[00;34m\]\w\[\033[00m\]\$ '
  48
  49         if [ ${DARK:-0} -eq 0 ]; then
  50                 LS_COLORS="$(echo "${LS_COLORS}" | sed 's/01;/00;/g')"
  51         else
  52                 # We need to bold the LS_COLORS and PS1 environment variables
  53                 # so they show up on a dark terminal
  54                 LS_COLORS="$(echo "${LS_COLORS}" | sed 's/00;/01;/g')"
  55                 PS1="$(echo "${PS1}" | sed 's/00;/01;/g')"
  56         fi
  57
  58         export LS_COLORS
  59         unset PS1_COLOR
  60         unset DARK
  61 fi
  62