install.sh

   1 #!/bin/bash
   2
   3 CONFIG=/boot/config.txt
   4 DATESTAMP=`date "+%Y-%M-%d-%H-%M-%S"`
   5 CONFIG_BACKUP=false
   6
   7 CONFIG_VARS=`python - <<EOF
   8 from configparser import ConfigParser
   9 c = ConfigParser()
  10 c.read('library/setup.cfg')
  11 p = dict(c['pimoroni'])
  12 # Convert multi-line config entries into bash arrays
  13 for k in p.keys():
  14     fmt = '"{}"'
  15     if '\n' in p[k]:
  16         p[k] = "'\n\t'".join(p[k].split('\n')[1:])
  17         fmt = "('{}')"
  18     p[k] = fmt.format(p[k])
  19 print("""
  20 LIBRARY_NAME="{name}"
  21 LIBRARY_VERSION="{version}"
  22 """.format(**c['metadata']))
  23 print("""
  24 PY3_DEPS={py3deps}
  25 PY2_DEPS={py2deps}
  26 SETUP_CMDS={commands}
  27 CONFIG_TXT={configtxt}
  28 """.format(**p))
  29 EOF`
  30
  31 if [ $? -ne 0 ]; then
  32         printf "Error parsing configuration...\n"
  33         exit 1
  34 fi
  35
  36 function do_config_backup {
  37         if [ ! $CONFIG_BACKUP == true ]; then
  38                 CONFIG_BACKUP=true
  39                 FILENAME="/boot/config.preinstall-$LIBRARY_NAME-$DATESTAMP.txt"
  40                 printf "Backing up $CONFIG to $FILENAME\n"
  41                 cp $CONFIG $FILENAME
  42         fi
  43 }
  44
  45 function apt_pkg_install {
  46         PACKAGES=()
  47         PACKAGES_IN=("$@")
  48         for ((i = 0; i < ${#PACKAGES_IN[@]}; i++)); do
  49                 PACKAGE="${PACKAGES_IN[$i]}"
  50                 printf "Checking for $PACKAGE\n"
  51                 dpkg -L $PACKAGE > /dev/null 2>&1
  52                 if [ "$?" == "1" ]; then
  53                         PACKAGES+=("$PACKAGE")
  54                 fi
  55         done
  56         PACKAGES="${PACKAGES[@]}"
  57         if ! [ "$PACKAGES" == "" ]; then
  58                 echo "Installing missing packages: $PACKAGES"
  59                 sudo apt update
  60                 sudo apt install -y $PACKAGES
  61         fi
  62 }
  63
  64 eval $CONFIG_VARS
  65
  66 printf "$LIBRARY_NAME $LIBRARY_VERSION Python Library: Installer\n\n"
  67
  68 if [ $(id -u) -ne 0 ]; then
  69         printf "Script must be run as root. Try 'sudo ./install.sh'\n"
  70         exit 1
  71 fi
  72
  73 cd library
  74
  75 printf "Installing for Python 2..\n"
  76 apt_pkg_install "${PY2_DEPS[@]}"
  77 python setup.py install
  78
  79 if [ -f "/usr/bin/python3" ]; then
  80         printf "Installing for Python 3..\n"
  81         apt_pkg_install "${PY3_DEPS[@]}"
  82         python3 setup.py install
  83 fi
  84
  85 cd ..
  86
  87 for ((i = 0; i < ${#SETUP_CMDS[@]}; i++)); do
  88         CMD="${SETUP_CMDS[$i]}"
  89         # Attempt to catch anything that touches /boot/config.txt and trigger a backup
  90         if [[ "$CMD" == *"raspi-config"* ]] || [[ "$CMD" == *"$CONFIG"* ]] || [[ "$CMD" == *"\$CONFIG"* ]]; then
  91                 do_config_backup
  92         fi
  93         eval $CMD
  94 done
  95
  96 for ((i = 0; i < ${#CONFIG_TXT[@]}; i++)); do
  97         CONFIG_LINE="${CONFIG_TXT[$i]}"
  98         if ! [ "$CONFIG_LINE" == "" ]; then
  99                 do_config_backup
 100                 printf "Adding $CONFIG_LINE to $CONFIG\n"
 101                 sed -i "s/^#$CONFIG_LINE/$CONFIG_LINE/" $CONFIG
 102                 if ! grep -q "^$CONFIG_LINE" $CONFIG; then
 103                         printf "$CONFIG_LINE\n" >> $CONFIG
 104                 fi
 105         fi
 106 done
 107
 108 printf "Done!\n"