Fix include/include_tasks with tags for ansible v2.5

fix_includes.sh

#!/bin/bash

# This dirty script is supposed to run on your ansible directory.
# It could obviously be done better, but it's just a single use script, so I don't really care.
# Worked fine with bash 4.2
# Anyway, check its syntax (at least the first line, the one setting the RESULT var), and use with caution.

# The script implements what's suggested here: 
# http://docs.ansible.com/ansible/2.5/porting_guides/porting_guide_2.5.html#dynamic-includes-and-attribute-inheritance

# What it does is:
#   1 - Find all "include" or "include_tasks" tasks in the "roles" directory.
#   2 - Detect the tags assigned. If no tags, the task is ignored.
#   3 - Creating an ansible block to wrap the file to be included, and assigning the detected tags to that block.
#   4 - Replacing the (to be) include file content with the created content (the block wrap).

RESULT=$(grep -R -n "include: \|include_tasks: " roles/ | grep -v "Possible values include" | grep -v "#" | grep -v "{{" | tr ":" " " |  sed -e 's/\ -\ /\ /')
TASKFILES=$(printf "$RESULT" | awk '{print $1}')
INCLUDES=($(printf "$RESULT" | awk '{print $4}'))
LINENUMBERS=($(printf "$RESULT" | awk '{print $2}'))
declare -A BLOCKS

i=0
enter=$'\n'

for taskfile in $TASKFILES; do
  # need to get the include file name.
  #echo "taskfile $taskfile"
  name=$(echo $taskfile | tr "/" " " | awk '{print $NF}')
  empty=""
  taskfile_path=$(echo "${taskfile/$name/$empty}")
  name_include=$(echo ${INCLUDES[$i]} | tr -d "\"" | tr -d "'")
  full_include=$(echo $taskfile_path$name_include)
  
  # now, need to get the tags applied to the include task.
  include_line=$(echo ${LINENUMBERS[$i]} | tr -d "\"" | tr -d "'")
  tamanio=$(cat $taskfile | wc -l)
  tail_lines=$(($tamanio - $include_line))
  tags=""
  content=$(tail -n$tail_lines $taskfile)
  IFS=$enter
  for l in $content ; do
    if [[ $l =~ tags ]]; then
      tags=$(echo "$l" | sed -e 's/tags\:/\ /' | tr -d " ")
    fi

    l=$(echo "$l" | tr -d " " | tr -d "\t")

    if [[ -z $l ]]; then
      break 1
    fi

  done
  
  # We got the tags. Just need to create the blocks now.
  IFS=$enter
  content=$(cat $full_include | grep -v "\-\-\-" | sed "s/^$/\ \ /")
  spaces="    "
  tabbed_content=""
  IFS=$enter
  for c in $(echo "$content"); do
    tabbed_content+="$spaces$c$enter"
  done

  if [[ -n $tags ]]; then
    block="---$enter"
    block+="- block:$enter$tabbed_content"
    block+="  tags: $tags"
    #echo "$block$enter"
    #echo "include: $full_include"
    index="$full_include"
    BLOCKS[$index]="$block"
    #echo "$block" > $full_include
    #exit 0
    #echo "$taskfile $linea $tags"
  fi
  i=$(($i+1))
done

echo "${#BLOCKS[@]} blocks detected"
for block in "${!BLOCKS[@]}"; do
  #echo "${BLOCKS[$block]}$enter"
  echo "${BLOCKS[$block]}" > $block
  #exit 0
done