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 APT_HAS_UPDATED=false
   7 USER_HOME=/home/$SUDO_USER
   8 RESOURCES_TOP_DIR=$USER_HOME/Pimoroni
   9 WD=`pwd`
  10
  11 user_check() {
  12         if [ $(id -u) -ne 0 ]; then
  13                 printf "Script must be run as root. Try 'sudo ./install.sh'\n"
  14                 exit 1
  15         fi
  16 }
  17
  18 confirm() {
  19         if [ "$FORCE" == '-y' ]; then
  20                 true
  21         else
  22                 read -r -p "$1 [y/N] " response < /dev/tty
  23                 if [[ $response =~ ^(yes|y|Y)$ ]]; then
  24                         true
  25                 else
  26                         false
  27                 fi
  28         fi
  29 }
  30
  31 prompt() {
  32         read -r -p "$1 [y/N] " response < /dev/tty
  33         if [[ $response =~ ^(yes|y|Y)$ ]]; then
  34                 true
  35         else
  36                 false
  37         fi
  38 }
  39
  40 success() {
  41         echo -e "$(tput setaf 2)$1$(tput sgr0)"
  42 }
  43
  44 inform() {
  45         echo -e "$(tput setaf 6)$1$(tput sgr0)"
  46 }
  47
  48 warning() {
  49         echo -e "$(tput setaf 1)$1$(tput sgr0)"
  50 }
  51
  52 function do_config_backup {
  53         if [ ! $CONFIG_BACKUP == true ]; then
  54                 CONFIG_BACKUP=true
  55                 FILENAME="config.preinstall-$LIBRARY_NAME-$DATESTAMP.txt"
  56                 inform "Backing up $CONFIG to /boot/$FILENAME\n"
  57                 cp $CONFIG /boot/$FILENAME
  58                 mkdir -p $RESOURCES_TOP_DIR/config-backups/
  59                 cp $CONFIG $RESOURCES_TOP_DIR/config-backups/$FILENAME
  60                 if [ -f "$UNINSTALLER" ]; then
  61                         echo "cp $RESOURCES_TOP_DIR/config-backups/$FILENAME $CONFIG" >> $UNINSTALLER
  62                 fi
  63         fi
  64 }
  65
  66 function apt_pkg_install {
  67         PACKAGES=()
  68         PACKAGES_IN=("$@")
  69         for ((i = 0; i < ${#PACKAGES_IN[@]}; i++)); do
  70                 PACKAGE="${PACKAGES_IN[$i]}"
  71                 printf "Checking for $PACKAGE\n"
  72                 dpkg -L $PACKAGE > /dev/null 2>&1
  73                 if [ "$?" == "1" ]; then
  74                         PACKAGES+=("$PACKAGE")
  75                 fi
  76         done
  77         PACKAGES="${PACKAGES[@]}"
  78         if ! [ "$PACKAGES" == "" ]; then
  79                 echo "Installing missing packages: $PACKAGES"
  80                 if [ ! $APT_HAS_UPDATED ]; then
  81                         apt update
  82                         APT_HAS_UPDATED=true
  83                 fi
  84                 apt install -y $PACKAGES
  85                 if [ -f "$UNINSTALLER" ]; then
  86                         echo "apt uninstall -y $PACKAGES"
  87                 fi
  88         fi
  89 }
  90
  91 user_check
  92
  93 apt_pkg_install python-configparser
  94
  95 CONFIG_VARS=`python - <<EOF
  96 from configparser import ConfigParser
  97 c = ConfigParser()
  98 c.read('library/setup.cfg')
  99 p = dict(c['pimoroni'])
 100 # Convert multi-line config entries into bash arrays
 101 for k in p.keys():
 102     fmt = '"{}"'
 103     if '\n' in p[k]:
 104         p[k] = "'\n\t'".join(p[k].split('\n')[1:])
 105         fmt = "('{}')"
 106     p[k] = fmt.format(p[k])
 107 print("""
 108 LIBRARY_NAME="{name}"
 109 LIBRARY_VERSION="{version}"
 110 """.format(**c['metadata']))
 111 print("""
 112 PY3_DEPS={py3deps}
 113 PY2_DEPS={py2deps}
 114 SETUP_CMDS={commands}
 115 CONFIG_TXT={configtxt}
 116 """.format(**p))
 117 EOF`
 118
 119 if [ $? -ne 0 ]; then
 120         warning "Error parsing configuration...\n"
 121         exit 1
 122 fi
 123
 124 eval $CONFIG_VARS
 125
 126 RESOURCES_DIR=$RESOURCES_TOP_DIR/$LIBRARY_NAME
 127 UNINSTALLER=$RESOURCES_DIR/uninstall.sh
 128
 129 mkdir -p $RESOURCES_DIR
 130
 131 cat << EOF > $UNINSTALLER
 132 printf "It's recommended you run these steps manually.\n"
 133 printf "If you want to run the full script, open it in\n"
 134 printf "an editor and remove 'exit 1' from below.\n"
 135 exit 1
 136 EOF
 137
 138 printf "$LIBRARY_NAME $LIBRARY_VERSION Python Library: Installer\n\n"
 139
 140 cd library
 141
 142 printf "Installing for Python 2..\n"
 143 apt_pkg_install "${PY2_DEPS[@]}"
 144 python setup.py install > /dev/null
 145 if [ $? -eq 0 ]; then
 146         success "Done!\n"
 147         echo "pip uninstall $LIBRARY_NAME" >> $UNINSTALLER
 148 fi
 149
 150 if [ -f "/usr/bin/python3" ]; then
 151         printf "Installing for Python 3..\n"
 152         apt_pkg_install "${PY3_DEPS[@]}"
 153         python3 setup.py install > /dev/null
 154         if [ $? -eq 0 ]; then
 155                 success "Done!\n"
 156                 echo "pip3 uninstall $LIBRARY_NAME" >> $UNINSTALLER
 157         fi
 158 fi
 159
 160 cd $WD
 161
 162 for ((i = 0; i < ${#SETUP_CMDS[@]}; i++)); do
 163         CMD="${SETUP_CMDS[$i]}"
 164         # Attempt to catch anything that touches /boot/config.txt and trigger a backup
 165         if [[ "$CMD" == *"raspi-config"* ]] || [[ "$CMD" == *"$CONFIG"* ]] || [[ "$CMD" == *"\$CONFIG"* ]]; then
 166                 do_config_backup
 167         fi
 168         eval $CMD
 169 done
 170
 171 for ((i = 0; i < ${#CONFIG_TXT[@]}; i++)); do
 172         CONFIG_LINE="${CONFIG_TXT[$i]}"
 173         if ! [ "$CONFIG_LINE" == "" ]; then
 174                 do_config_backup
 175                 inform "Adding $CONFIG_LINE to $CONFIG\n"
 176                 sed -i "s/^#$CONFIG_LINE/$CONFIG_LINE/" $CONFIG
 177                 if ! grep -q "^$CONFIG_LINE" $CONFIG; then
 178                         printf "$CONFIG_LINE\n" >> $CONFIG
 179                 fi
 180         fi
 181 done
 182
 183 if [ -d "examples" ]; then
 184         if confirm "Would you like to copy examples to $RESOURCES_DIR?"; then
 185                 inform "Copying examples to $RESOURCES_DIR"
 186                 cp -r examples/ $RESOURCES_DIR
 187                 echo "rm -r $RESOURCES_DIR" >> $UNINSTALLER
 188         fi
 189 fi
 190
 191 success "\nAll done!"
 192 inform "If this is your first time installing you should reboot for hardware changes to tkae effect.\n"
 193 inform "Find uninstall steps in $UNINSTALLER\n"