Feat: Pure Bash Bible and TLDR in cheat

scripts/install-cheat-purebashbible.sh

@@ -0,0 +1,54 @@
+#!/usr/bin/env bash
+# shellcheck disable=SC2231,SC2034,SC2181,SC2068
+# shellcheck source=shared.sh
+source "$HOME/.dotfiles/scripts/shared.sh"
+
+PBB_REQUIRED_TOOLS=(basename git mkdir cheat ls grep head awk cp echo rm)
+for t in ${PBB_REQUIRED_TOOLS[@]}; do
+  ! have "$t" && echo "(!) $t is missing, can't continue..." && exit 1
+done
+
+PBB_GIT="https://github.com/dylanaraps/pure-bash-bible.git"
+PBB_SOURCE="source: $PBB_GIT"
+PBB_SYNTAX="syntax: bash"
+PBB_TAGS="tags: [bash]"
+
+PBB_TEMP_PREFIX=$(basename "$0")
+PBB_TEMP_DIR="/tmp/pbb-$(rnd)"
+
+# If there's no .git, clone the folder
+if [ ! -d "$PBB_TEMP_DIR/.git" ]; then
+  git clone "$PBB_GIT" "$PBB_TEMP_DIR"
+fi
+
+PBB_CHAPTERS=$(ls -1v "$PBB_TEMP_DIR"/manuscript/chapter*)
+CHEAT_DEST="$(cheat -d | grep pure-bash-bible | head -1 | awk '{print $2}')"
+
+if [ ! -d "$CHEAT_DEST" ]; then
+  mkdir -p "$CHEAT_DEST"
+fi
+
+for f in ${PBB_CHAPTERS[@]}; do
+  # get all headers, take the first one, strip the # and return the first word in lowercase
+  HEADER=$(grep -e '^[#] ' "$f" | head -1 | awk '{print tolower($2)}')
+  CHEAT_FILE="$CHEAT_DEST/${HEADER}"
+  echo "(*) $CHEAT_FILE"
+
+  if [ ! -f "$CHEAT_FILE" ]; then
+    cp "$f" "$CHEAT_FILE"
+  fi
+
+  LC_ALL=C perl -pi.bak -e 's/\<\!-- CHAPTER END --\>//' "$CHEAT_FILE"
+  rm "$CHEAT_FILE.bak"
+
+  # add tags if the file doesn't have them
+  if [ '---' != "$(head -1 < "$CHEAT_FILE")" ]; then
+    T="$PBB_SYNTAX\n$PBB_TAGS\n$PBB_SOURCE\n"
+    echo -e "---\n$T---\n$(cat "$CHEAT_FILE")" > "$CHEAT_FILE"
+  fi
+done
+
+# Cleanup
+if [ -d "$PBB_TEMP_DIR" ]; then
+  rm -rf "$PBB_TEMP_DIR"
+fi