AMiRo-OS

################################################################################

# AMiRo-BLT is an bootloader and toolchain designed for the Autonomous Mini    #

# Robot (AMiRo) platform.                                                      #

# Copyright (C) 2016..2019  Thomas Schöpping et al.                            #

#                                                                              #

# This program is free software: you can redistribute it and/or modify         #

# it under the terms of the GNU General Public License as published by         #

# the Free Software Foundation, either version 3 of the License, or            #

# (at your option) any later version.                                          #

#                                                                              #

# This program is distributed in the hope that it will be useful,              #

# but WITHOUT ANY WARRANTY; without even the implied warranty of               #

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the                #

# GNU General Public License for more details.                                 #

#                                                                              #

# You should have received a copy of the GNU General Public License            #

# along with this program.  If not, see <http://www.gnu.org/licenses/>.        #

#                                                                              #

# This research/work was supported by the Cluster of Excellence Cognitive      #

# Interaction Technology 'CITEC' (EXC 277) at Bielefeld University, which is   #

# funded by the German Research Foundation (DFG).                              #

################################################################################

#!/bin/bash

################################################################################

# GENERIC FUNCTIONS                                                            #

################################################################################

### print an error message #####################################################

# Prints a error <message> to standard output.

#If variable 'LOG_FILE' is specified, the message is also appended to the given file.

#

# usage:      printError <message>

# arguments:  <message>

#                 Message string to print.

# return:     n/a

#

function printError {

  local string="ERROR:   $1"

  # if a log file is specified

  if [ -n "$LOG_FILE" ]; then

    printf "[$(date '+%Y-%m-%d %H:%M:%S')] $string" >> $LOG_FILE

  fi

  printf "$(tput setaf 1)>>> $string$(tput sgr 0)" 1>&2

}

### print a warning message ####################################################

# Prints a warning <message> to standard output.

#If variable 'LOG_FILE' is specified, the message is also appended to the given file.

#

# usage:      printMessage <message>

# arguments:  <message>

#                 Message string to print.

# return:     n/a

#

function printWarning {

  local string="WARNING: $1"

  # if a log file is specified

  if [ -n "$LOG_FILE" ]; then

    printf "[$(date '+%Y-%m-%d %H:%M:%S')] $string" >> $LOG_FILE

  fi

  printf "$(tput setaf 3)>>> $string$(tput sgr 0)"

}

### print an information message ###############################################

# Prints an information <message> to standard output.

#If variable 'LOG_FILE' is specified, the message is also appended to the given file.

#

# usage:      printInfo <message>

# arguments:  <message>

#                 Message string to print.

# return:     n/a

#

function printInfo {

  local string="INFO:    $1"

  # if a log file is specified

  if [ -n "$LOG_FILE" ]; then

    printf "[$(date '+%Y-%m-%d %H:%M:%S')] $string" >> $LOG_FILE

  fi

  printf "$(tput setaf 2)>>> $string$(tput sgr 0)"

}

### print a message to file ####################################################

# Appends a <message> to a log file, specified by the variable 'LOG_FILE'.

#

# usage       printLog <message>

# arguments:  <message>

#                 Message string to print.

# return:     n/a

#

function printLog {

  local string="LOG:     $1"

  # if a log file is specified

  if [ -n "$LOG_FILE" ]; then

    printf "[$(date '+%Y-%m-%d %H:%M:%S')] $string" >> $LOG_FILE

  fi

}

### exit the script normally ###################################################

# Prints a delimiter and exits the script normally (returns 0).

#

# usage:      quitScript

# arguments:  n/a

# return:     0

#                 No error or warning occurred.

#

function quitScript {

  printInfo "exiting $(realpath ${BASH_SOURCE[0]})\n"

  printf "\n"

  printf "######################################################################\n"

  exit 0

}

### read a user input ##########################################################

# Reads a single character user input from a set up <options> and stores it in

# a given <return> variable.

#

# usage:      readUserInput <options> <return>

# arguments:  <options>

#                 String definiing the set of valid characters.

#                 If the string is empty, the user can input any character.

#             <return>

#                 Variable to store the selected character to.

# return:     n/a

#

function readUserInput {

  local input=""

  # read user input

  while [ -z $input ] || ( [ -n "$1" ] && [[ ! $input =~ ^[$1]$ ]] ); do

    read -p "your selection: " -n 1 -e input

    if [ -z $input ] || ( [ -n "$1" ] && [[ ! $input =~ ^[$1]$ ]] ); then

      printWarning "[$input] is no valid action\n"

    fi

  done

  printLog "[$input] has been selected\n"

  eval $2="$input"

}

### check whether argument is an option ########################################

# Checks a <string> whether it is an option.

# Options are defined to either start with '--' followed by any string, or

# to start with a single '-' followed by a single character, or

# to start with a single '-' followed by a single character, a '=' and any string.

# Examples: '--option', '--option=arg', '-o', '-o=arg', '--'

#

# usage:      parseIsOption <string>

# arguments:  <string>

#                 A string to check whether it is an option.

# return:     0

#                 <string> is an option.

#             -1

#                 <string> is not an option.

#

function parseIsOption {

  if [[ "$1" =~ ^-(.$|.=.*) ]] || [[ "$1" =~ ^--.* ]]; then

    return 0

  else

    return -1

  fi

}

### set the log file ###########################################################

# Sets a specified <infile> as log file and checks whether it already exists.

# If so, the log may either be appended to the file, its content can be cleared,

# or no log is generated at all.

# The resulting path is stored in <outvar>.

#

# usage:      setLogFile [--option=<option>] [--quiet] <infile> <outvar>

# arguments:  --option=<option>

#                 Select what to do if <file> already exists.

#                 Possible values are 'a', 'c', 'r' and 'n'.

#                 - a: append (starts with a separator)

#                 - c: continue (does not insert a seperator)

#                 - r: delete and restart

#                 - n: no log

#                 If no option is secified but <file> exists, an interactive selection is provided.

#             --quiet

#                 Suppress all messages.

#             <infile>

#                 Path of the wanted log file.

#             <outvar>

#                 Variable to store the path of the log file to.

# return:     0

#                 No error or warning occurred.

#             -1

#                 Error: invalid input

#

function setLogFile {

  local filepath=""

  local option=""

  local quiet=false

  # parse arguments

  local otherargs=()

  while [ $# -gt 0 ]; do

    if ( parseIsOption $1 ); then

      case "$1" in

        -o=*|--option=*)

          option=${1#*=}; shift 1;;

        -o*|--option*)

          option="$2"; shift 2;;

        -q|--quiet)

          quiet=true; shift 1;;

        *)

          printError "invalid option: $1\n"; shift 1;;

      esac

    else

      otherargs+=("$1")

      shift 1

    fi

  done

  filepath=$(realpath ${otherargs[0]})

  # if file already exists

  if [ -e $filepath ]; then

    # if no option was specified, ask what to do

    if [ -z "$option" ]; then

      printWarning "log file $filepath already esists\n"

      local userinput=""

      printf "Select what to do:\n"

      printf "  [A] - append log\n"

      printf "  [R] - restart log (delete existing file)\n"

      printf "  [N] - no log\n"

      readUserInput "AaRrNn" userinput

      option=${userinput,,}

    fi

    # evaluate option

    case "$option" in

      a|c)

        if [ $quiet = false ]; then

          printInfo "appending log to $filepath\n"

        fi

        if [ $option != c ]; then

          printf "\n" >> $filepath

          printf "######################################################################\n" >> $filepath

          printf "\n" >> $filepath

        fi

        ;;

      r)

        echo -n "" > $filepath

        if [ $quiet = false ]; then

          printInfo "content of $filepath wiped\n"

        fi

        ;;

      n)

        if [ $quiet = false ]; then

          printInfo "no log file will be generated\n"

        fi

        filepath=""

        ;;

      *) # sanity check (return error)

        printError "unexpected argument: $option\n"; return -1;;

    esac

  else

    if [ $quiet = false ]; then

      printInfo "log file set to $filepath\n"

    fi

  fi

  eval ${otherargs[1]}="$filepath"

  return 0

}

### check whether commands are available #######################################

# Checks whether the specified commands are available and can be executed.

#

# usage:      checkCommand [<command> <command> ...]

# arguments:  <command>

#                 Name of the command to check.

# return:     0

#                 All requested commands are available.

#             >0

#                 Number of requested commands that were not found.

#             -1

#                 No argument given.

#

function checkCommands {

  local status=0

  # return if no argument was specified

  if [ $# -eq 0 ]; then

    return -1

  fi

  # check all specified commands

  while [ $# -gt 0 ]; do

    command -v $1 &>/dev/null

    if [ $? -ne 0 ]; then

      printWarning "Command '$1' not available.\n"

      status=$((status + 1))

    fi

    shift 1

  done

  return $status

}

################################################################################

# SPECIFIC FUNCTIONS                                                           #

################################################################################

### print welcome text #########################################################

# Prints a welcome message to standard out.

#

# usage:      printWelcomeText

# arguments:  n/a

# return:     n/a

#

function printWelcomeText {

  printf "######################################################################\n"

  printf "#                                                                    #\n"

  printf "#                  Welcome to the AMiRo-BLT setup!                   #\n"

  printf "#                                                                    #\n"

  printf "######################################################################\n"

  printf "#                                                                    #\n"

  printf "# Copyright (c) 2016..2019  Thomas Schöpping                         #\n"

  printf "#                                                                    #\n"

  printf "# This is free software; see the source for copying conditions.      #\n"

  printf "# There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR  #\n"

  printf "# A PARTICULAR PURPOSE. The development of this software was         #\n"

  printf "# supported by the Excellence Cluster EXC 227 Cognitive Interaction  #\n"

  printf "# Technology. The Excellence Cluster EXC 227 is a grant of the       #\n"

  printf "# Deutsche Forschungsgemeinschaft (DFG) in the context of the German #\n"

  printf "# Excellence Initiative.                                             #\n"

  printf "#                                                                    #\n"

  printf "######################################################################\n"

}

### print help #################################################################

# Prints a help text to standard out.

#

# usage:      printHelp

# arguments:  n/a

# return:     n/a

#

function printHelp {

  printInfo "printing help text\n"

  printf "usage:    $(basename ${BASH_SOURCE[0]}) [-h|--help] [-f|--stm32flash] [-s|--SerialBoot] [-e|--IDE] [-c|--compiler] [-q|--quit] [--log=<file>]\n"

  printf "\n"

  printf "options:  -h, --help\n"

  printf "              Print this help text.\n"

  printf "          -f, --stm32flash\n"

  printf "              Run st,32flash tool setup.\n"

  printf "          -s, --SerialBoot\n"

  printf "              Run SerialBoot tool setup.\n"

  printf "          -e, --IDE\n"

  printf "              Enter IDE setup.\n"

  printf "          -c, --compiler\n"

  printf "              Enter compiler setup.\n"

  printf "          -q, --quit\n"

  printf "              Quit the script.\n"

  printf "          --log=<file>\n"

  printf "              Specify a log file.\n"

}

### stm32flash tool setup ######################################################

# Fetches the source code for the stm32flash tool and builds the binary.

# If the tool was already initialized, it can be wiped and rebuilt.

#

# usage:      stm32flashSetup

# arguments:  n/a

# return:     0

#                 No error or warning occurred.

#             1

#                 Warning: Setup aborted by user.

#             -1

#                 Error: Unexpected user input.

#             -2

#                 Error: Missing dependecny.

#

function stm32flashSetup {

  local amirobltdir=$(dirname $(realpath ${BASH_SOURCE[0]}))

  local stm32flashdir=${amirobltdir}/Host/Source/stm32flash

  local userdir=$(pwd)

  # check dependencies

  checkCommands git make gcc g++

  if [ $? -ne 0 ]; then

    printError "Missing dependencies detected.\n"

    return -2

  fi

  # if the stm32flash folder is not empty

  if [ ! -z "$(ls -A $stm32flashdir)" ]; then

    printWarning "$stm32flashdir is not empty. Delete and reinitialize? [y/n]\n"

    local userinput=""

    readUserInput "YyNn" userinput

    case "$userinput" in

      Y|y)

        printInfo "wiping ${stm32flashdir}...\n"

        # checkout base commit and delete all local branches

        cd $amirobltdir

        git submodule update --force --checkout $stm32flashdir | tee -a $LOG_FILE

        cd $stm32flashdir

        local git_branches=($(git for-each-ref --format="%(refname)"))

        for branch in $git_branches ; do

          if [[ $branch = *"heads/"* ]]; then

            git branch -D ${branch##*/} | tee -a $LOG_FILE

          fi

        done

        cd $amirobltdir

        # deinit stm32flash submodule and delete any remaining files

        git submodule deinit -f $stm32flashdir 2>&1 | tee -a $LOG_FILE

        rm -rf $stm32flashdir/*

        cd $userdir

        ;;

      N|n)

        printWarning "stm32flash setup aborted by user\n"

        return 1

        ;;

      *) # sanity check (return error)

        printError "unexpected input: $userinput\n";

        return -1

        ;;

    esac

  fi

  # initialize submodule

  printInfo "initializing stm32flash submodule...\n"

  cd $amirobltdir

  git submodule update --init $stm32flashdir 2>&1 | tee -a $LOG_FILE

  while [ ${PIPESTATUS[0]} -ne 0 ]; do

    printWarning "initialitaion failed. Retry? [y/n]\n"

    local userinput=""

    readUserInput "YyNn" userinput

    case "$userinput" in

      Y|y)

        git submodule update --init $stm32flashdir 2>&1 | tee -a $LOG_FILE;;

      N|n)

        printWarning "stm32flash initialization aborted by user\n"

        cd $userdir

        return 1

        ;;

      *) # sanity check (return error)

        printError "unexpected input: $userinput\n"; return -1;;

    esac

  done

  cd $userdir

  # build the stm32flash tool

  printInfo "compiling stm32flash\n"

  cd $stm32flashdir

  make 2>&1 | tee -a $LOG_FILE

  cd $userdir

  return 0

}

### SerialBoot tool setup ######################################################

# Builds the SerialBoot tool.

# If the tool was built before, it can be deleted and rebuilt.

#

# usage:      serialBootSetup

# arguments:  n/a

# return:     0

#                 No errort or warning occurred.

#             1

#                 Warning: Setup aborted by user.

#             -1

#                 Error: Unexpected user input.

#

function serialBootSetup {

  local amirobltdir=$(dirname $(realpath ${BASH_SOURCE[0]}))

  local serialbootdir=${amirobltdir}/Host/Source/SerialBoot

  local userdir=$(pwd)

  # check dependencies

  checkCommands make cmake gcc g++

  if [ $? -ne 0 ]; then

    printError "Missing dependencies detected.\n"

    return -2

  fi

  # if a build folder already exists

  if [ -d "${serialbootdir}/build/" ]; then

    printWarning "SerialBoot has been built before. Delete and rebuild? [y/n]\n"

    local userinput=""

    readUserInput "YyNn" userinput

    case "$userinput" in

      Y|y)