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"         ] && PS1_COLOR=1 && DARK=1
  22 [ "${TERM}" = "screen"        ] && PS1_COLOR=1
  23 [ "${TERM}" = "xterm"         ] && PS1_COLOR=1
  24 [ "${TERM}" = "xterm-color"   ] && PS1_COLOR=1
  25 [ "${TERM}" = "rxvt"          ] && PS1_COLOR=1
  26 [ "${TERM}" = "rxvt-unicode"  ] && PS1_COLOR=1
  27
  28 # Override COLORFGBG (probably used the darkterm or lightterm function
  29 if [ -n "${DARK}" ]; then
  30         unset COLORFGBG
  31 else
  32         DARK="${DEFAULTDARK}"
  33 fi
  34 unset DEFAULTDARK
  35
  36 # If COLORFGBG is set, use it to determine the terminal type, DARK=0 is
  37 # dark on light, DARK=1 is light on dark.
  38 if [ -n "${COLORFGBG}" ]; then
  39         FGBG="$(echo $COLORFGBG | sed 's/;.*;/;/')" # Allow for rxvt without xpm
  40         FG=$(echo "${FGBG}" | cut -d ';' -f 1)
  41         BG=$(echo "${FGBG}" | cut -d ';' -f 2)
  42         if [ "${FG}" = "white" -o "${FG}" = "green" ]; then
  43                 DARK=1
  44         elif [ "${BG}" = "black" ]; then
  45                 DARK=1
  46         elif [ "${FG}" = "black" ]; then
  47                 DARK=0
  48         elif [ "${BG}" = "white" ]; then
  49                 DARK=0
  50         elif [ "${FG}" -gt "${BG}" ]; then
  51                 DARK=1
  52         elif [ "${FG}" -lt "${BG}" ]; then
  53                 DARK=0
  54         fi
  55         unset FG
  56         unset BG
  57         unset FGBG
  58 else
  59         # Otherwise we just do our best based on the setting of DARK
  60         if [ ${DARK} -eq 0 ]; then
  61                 export COLORFGBG="0;15"
  62         else
  63                 export COLORFGBG="15;0"
  64         fi
  65 fi
  66
  67 # Set the prompt colour, and the colors for the 'ls' command appropriately,
  68 # depending on the background of the terminal.
  69 if [ ${PS1_COLOR:-0} -eq 1 ]; then
  70         eval $(dircolors 2> /dev/null)
  71         PS1='\[\033[00;31m\]\u@\h\[\033[00m\]:\[\033[00;34m\]\w\[\033[00m\]\$ '
  72
  73         if [ ${DARK} -eq 0 ]; then
  74                 LS_COLORS="$(echo "${LS_COLORS}" | sed 's/01;/00;/g')"
  75         else
  76                 # We need to bold the LS_COLORS and PS1 environment variables
  77                 # so they show up on a dark terminal
  78                 LS_COLORS="$(echo "${LS_COLORS}" | sed 's/00;/01;/g')"
  79                 PS1="$(echo "${PS1}" | sed 's/00;/01;/g')"
  80         fi
  81
  82         export LS_COLORS
  83 fi
  84 unset PS1_COLOR
  85 unset DARK
  86