Add '.scripts/' from commit 'a4ba0376ba73b1bb295d8bb459a4bf2b063ddca9'

git-subtree-dir: .scripts
git-subtree-mainline: 03c0cf66468d5e04c0e3559f9f89b5eec28feb9e
git-subtree-split: a4ba0376ba73b1bb295d8bb459a4bf2b063ddca9

1 files changed, 78 insertions, 0 deletions

diff --git a/.scripts/colors.sh b/.scripts/colors.sh
new file mode 100755
index 0000000..fc1c10c
--- /dev/null
+++ b/.scripts/colors.sh
@@ -0,0 +1,78 @@
+#!/usr/bin/env bash
+colors=$@
+for (( n=0; n < $colors; n++ )) do
+    printf " [%d] $(tput setaf $n)%s$(tput sgr0)" $n "Hello World!
+"
+done
+PADDING='Padding'
+
+main() {
+  local xterm_start=0 \
+        xterm_width=8 \
+        xterm_height=2
+
+  local cube_start=$((xterm_start + xterm_width * xterm_height)) \
+        cube_width=6 \
+        cube_height=$((6 * 6))
+
+  local greys_start=$((cube_start + cube_width * cube_height)) \
+        greys_width=8 \
+        greys_height=3
+
+  color_block $xterm_start $xterm_width $xterm_height
+  color_block $cube_start  $cube_width  $cube_height  use_padding
+  color_block $greys_start $greys_width $greys_height
+  echo
+}
+
+color_block() {
+  local start=$1 width=$2 height=$3 use_padding=$4
+  local max s color_nums colors
+
+  max=$((start + width * height - 1))
+
+  echo
+  for s in $(seq $start $width $max); do
+    color_nums=$(seq $s $((s + width - 1)))
+    colors="${use_padding:+$PADDING }${color_nums}${use_padding:+ $PADDING}"
+
+    printf '%s%s    %s%s\n' \
+      "$(fg_bars $colors)" $ansi_reset \
+      "$(bg_bars $colors)" $ansi_reset
+  done
+}
+
+fg_bars() {
+  for color in $@; do
+    color_bar ansi_fg $color ''
+  done
+}
+
+bg_bars() {
+  for color in $@; do
+    color_bar ansi_bg $color ' '
+  done
+}
+
+color_bar() {
+  local ansi=$1 color=$2 trail=$3
+
+  if [ "$color" == $PADDING ]; then
+    printf '%s    %s' $ansi_reset "$trail"
+  else
+    local color_seq=$($ansi $color)
+    printf '%s %03d%s' $color_seq $color "$trail"
+  fi
+}
+
+ansi_reset=$'\033[0m'
+
+ansi_fg() {
+  printf '\033[38;5;%dm' $1
+}
+
+ansi_bg() {
+  printf '\033[48;5;%dm' $1
+}
+
+main