Get dependencies script

#!/bin/bash

## If you need log then put here the name of the log file
#LOG_FILE="list_deps"
LOG_FILE=""
function print_log {
  if [[ "$LOG_FILE" != "" ]]; then
    echo "$1" >> $LOG_FILE
  fi
}

## Loop for get depends for build components
## The list_component is a subject to check dependencies
sed -i '/^[ \t]*$/d' list_component
cp list_component list_to_check
## Prepare the final list of packages. Initially it is empty
echo "" > final_list
end=$(cat list_to_check)
## Working while there is a subject to check
while [[ "$end" != "" ]]; do
  ## Create an temporary file to collect dependencies
  echo "" > temp
  ## Check components one-by-one
  while read comp; do
    if [[ "" == "$comp" ]]; then
      ## Skip empty line
      continue
    fi
    ## Check if this component is already checked
    res=$(grep "^[ \t]*$comp[ \t]*\$" final_list)
    if [[ "" != "$res" ]]; then
      ## Skip already checked component
      continue
    fi
    ## Check component dependencies
    echo -e "\033[33m =====> Getting depends for $comp... \033[0m"
    res=$(apt-rdepends --build-depends --follow=DEPENDS $comp | sed 's/^[ \t]*Build-Depends:[ \t]*//; s/^[ \t]*Build-Depends-Indep:[ \t]*//' | sed "s/^[ \\t]*${component}[ \\t]*\$//; /^[ \\t]*\$/d; s/[ \\t]*(.*)\$//")
    ## Put dependencies to the temporary file
    echo "$res" >> temp
    ## Put the component name to the list of already checked components
    echo "$comp" >> final_list
  done < list_to_check

  ## Remove duplucated dependenciers and put them to the list of subjects to check
  sort -u temp > list_to_check
  sed -i '/^[ \t]*$/d' list_to_check
  sed -i '/^[ \t]*$/d' final_list
  end=$(cat list_to_check)
done

## Loop for download dependencies
## Clear the final list from empty strings
sed -i '/^[ \t]*$/d' final_list
rm -f temp
rm -f list_to_check
## Scan the final list of packages one-by-one
while read pkg; do
  echo -e "\033[36m =====> Check $pkg... \033[0m"
  ## Check if the package exists
  res=$(apt-cache show $pkg | grep "Package: $pkg")
  if [[ "$res" != "" ]]; then
    ## Download the package
    echo -e "\033[35m =====> Downloading package $pkg... \033[0m"
    res=$(apt-get download $pkg | grep "E:" | sed -n 's/E://')
    ## Check the result of downloading
    if [[ "$res" == "" ]]; then
      print_log "$pkg : OK"
    else
      echo -e "\033[31;1;4m $res \033[0m"
      print_log "$pkg: $res"
    fi
  else
    echo -e "\033[31;1;4m$pkg: No package found \033[0m"
    echo "$pkg: No package found" >> list_deps
  fi
done < final_list

## Uploading *.deb packages to the local repo
echo -e "\033[32;1m =====> Uploading *.deb packages... \033[0m"
reprepro -b /data/repo --export=never -C main includedeb du2-prebuild /data/repo/pkg/*.deb

## Loop for sources
while read component; do
  ## Download source files
  echo -e "\033[33;1m =====> Downloading sources for $component... \033[0m"
  apt-get source --download-only $component
  ## Upload source files to the repo
  echo -e "\033[32;1m =====> Uploading sources for $component... \033[0m"
  reprepro -b /data/repo --export=never -C main includedsc du2-prebuild $component*.dsc
  rm -rf $component*
done < list_component

## Creating index for local repo
echo -e "\033[32;1m =====> Creating indices for local repo... \033[0m"
reprepro -Vb /data/repo export du2-prebuild
echo -e "\033[32;1m =====> DONE \033[0m"
if [[ "$LOG_FILE" != "" ]]; then
  echo "Downloaded package list is put to $LOG_FILE"
fi