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=0
  17
  18
  19 # Terminals that we want coloured prompts in
  20 [ -n "${COLORTERM}"      ] && PS1_COLOR=1
  21 [ "${TERM}" = "linux"    ] && DARK="${DARK:-1}"
  22 [ "$(tput colors)" -gt 2 ] && PS1_COLOR=1
  23
  24 # Override COLORFGBG (probably used the darkterm or lightterm function
  25 if [ -n "${DARK}" ]; then
  26         unset COLORFGBG
  27 else
  28         DARK="${DEFAULTDARK}"
  29 fi
  30 unset DEFAULTDARK
  31
  32 # If COLORFGBG is set, use it to determine the terminal type, DARK=0 is
  33 # dark on light, DARK=1 is light on dark.
  34 if [ -n "${COLORFGBG}" ]; then
  35         FGBG="$(echo $COLORFGBG | sed 's/;.*;/;/')" # Allow for rxvt without xpm
  36         FG=$(echo "${FGBG}" | cut -d ';' -f 1)
  37         BG=$(echo "${FGBG}" | cut -d ';' -f 2)
  38         if [ "${FG}" = "white" -o "${FG}" = "green" ]; then
  39                 DARK=1
  40         elif [ "${BG}" = "black" ]; then
  41                 DARK=1
  42         elif [ "${FG}" = "black" ]; then
  43                 DARK=0
  44         elif [ "${BG}" = "white" ]; then
  45                 DARK=0
  46         elif [ "${FG}" -gt "${BG}" ]; then
  47                 DARK=1
  48         elif [ "${FG}" -lt "${BG}" ]; then
  49                 DARK=0
  50         fi
  51         unset FG
  52         unset BG
  53         unset FGBG
  54 else
  55         # Otherwise we just do our best based on the setting of DARK
  56         if [ ${DARK} -eq 0 ]; then
  57                 export COLORFGBG="0;15"
  58         else
  59                 export COLORFGBG="15;0"
  60         fi
  61 fi
  62
  63 # Set the prompt colour, and the colors for the 'ls' command appropriately,
  64 # depending on the background of the terminal.
  65 if [ ${PS1_COLOR:-0} -eq 1 ]; then
  66         eval $(dircolors 2> /dev/null)
  67         PS1='\[\033[00;31m\]\u@\h\[\033[00m\]:\[\033[00;34m\]\w\[\033[00m\]\$ '
  68
  69         if [ ${DARK} -eq 0 ]; then
  70                 LS_COLORS="$(echo "${LS_COLORS}" | sed 's/01;/00;/g')"
  71         else
  72                 # We need to bold the LS_COLORS and PS1 environment variables
  73                 # so they show up on a dark terminal
  74                 LS_COLORS="$(echo "${LS_COLORS}" | sed 's/00;/01;/g')"
  75                 PS1="$(echo "${PS1}" | sed 's/00;/01;/g')"
  76         fi
  77
  78         export LS_COLORS
  79 fi
  80 unset PS1_COLOR
  81 unset DARK
  82