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amiro-os / periphery-lld / peripherylldsetup.sh @ ddf34c3d

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################################################################################
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# AMiRo-OS is an operating system designed for the Autonomous Mini Robot       #
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# (AMiRo) platform.                                                            #
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# Copyright (C) 2016..2019  Thomas Schöpping et al.                            #
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#                                                                              #
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# This program is free software: you can redistribute it and/or modify         #
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# it under the terms of the GNU General Public License as published by         #
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# the Free Software Foundation, either version 3 of the License, or            #
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# (at your option) any later version.                                          #
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#                                                                              #
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# This program is distributed in the hope that it will be useful,              #
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# but WITHOUT ANY WARRANTY; without even the implied warranty of               #
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the                #
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# GNU General Public License for more details.                                 #
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#                                                                              #
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# You should have received a copy of the GNU General Public License            #
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# along with this program.  If not, see <http://www.gnu.org/licenses/>.        #
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#                                                                              #
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# This research/work was supported by the Cluster of Excellence Cognitive      #
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# Interaction Technology 'CITEC' (EXC 277) at Bielefeld University, which is   #
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# funded by the German Research Foundation (DFG).                              #
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################################################################################
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#!/bin/bash
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################################################################################
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# GENERIC FUNCTIONS                                                            #
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################################################################################
29

    
30
### print an error message #####################################################
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# Prints a error <message> to standard output.
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#If variable 'LOG_FILE' is specified, the message is also appended to the given file.
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#
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# usage:      printError <message>
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# arguments:  <message>
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#                 Message string to print.
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# return:     n/a
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#
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function printError {
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  local string="ERROR:   $1"
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  # if a log file is specified
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  if [ -n "$LOG_FILE" ]; then
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    printf "[$(date '+%Y-%m-%d %H:%M:%S')] $string" >> $LOG_FILE
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  fi
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  printf "$(tput setaf 1)>>> $string$(tput sgr 0)" 1>&2
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}
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### print a warning message ####################################################
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# Prints a warning <message> to standard output.
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#If variable 'LOG_FILE' is specified, the message is also appended to the given file.
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#
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# usage:      printMessage <message>
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# arguments:  <message>
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#                 Message string to print.
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# return:     n/a
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#
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function printWarning {
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  local string="WARNING: $1"
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  # if a log file is specified
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  if [ -n "$LOG_FILE" ]; then
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    printf "[$(date '+%Y-%m-%d %H:%M:%S')] $string" >> $LOG_FILE
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  fi
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  printf "$(tput setaf 3)>>> $string$(tput sgr 0)"
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}
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### print an information message ###############################################
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# Prints an information <message> to standard output.
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#If variable 'LOG_FILE' is specified, the message is also appended to the given file.
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#
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# usage:      printInfo <message>
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# arguments:  <message>
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#                 Message string to print.
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# return:     n/a
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#
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function printInfo {
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  local string="INFO:    $1"
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  # if a log file is specified
78
  if [ -n "$LOG_FILE" ]; then
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    printf "[$(date '+%Y-%m-%d %H:%M:%S')] $string" >> $LOG_FILE
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  fi
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  printf "$(tput setaf 2)>>> $string$(tput sgr 0)"
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}
83

    
84
### print a message to file ####################################################
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# Appends a <message> to a log file, specified by the variable 'LOG_FILE'.
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#
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# usage       printLog <message>
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# arguments:  <message>
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#                 Message string to print.
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# return:     n/a
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#
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function printLog {
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  local string="LOG:     $1"
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  # if a log file is specified
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  if [ -n "$LOG_FILE" ]; then
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    printf "[$(date '+%Y-%m-%d %H:%M:%S')] $string" >> $LOG_FILE
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  fi
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}
99

    
100
### exit the script normally ###################################################
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# Prints a delimiter and exits the script normally (returns 0).
102
#
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# usage:      quitScript
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# arguments:  n/a
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# return:     0
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#                 No error or warning occurred.
107
#
108
function quitScript {
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  printInfo "exiting $(realpath ${BASH_SOURCE[0]})\n"
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  printf "\n"
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  printf "######################################################################\n"
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  exit 0
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}
114

    
115
### read a user input ##########################################################
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# Reads a single character user input from a set up <options> and stores it in
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# a given <return> variable.
118
#
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# usage:      readUserInput <options> <return>
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# arguments:  <options>
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#                 String definiing the set of valid characters.
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#                 If the string is empty, the user can input any character.
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#             <return>
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#                 Variable to store the selected character to.
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# return:     n/a
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#
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function readUserInput {
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  local input=""
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  # read user input
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  while [ -z $input ] || ( [ -n "$1" ] && [[ ! $input =~ ^[$1]$ ]] ); do
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    read -p "your selection: " -n 1 -e input
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    if [ -z $input ] || ( [ -n "$1" ] && [[ ! $input =~ ^[$1]$ ]] ); then
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      printWarning "[$input] is no valid action\n"
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    fi
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  done
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  printLog "[$input] has been selected\n"
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  eval $2="$input"
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}
139

    
140
### check whether argument is an option ########################################
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# Checks a <string> whether it is an option.
142
# Options are defined to either start with '--' followed by any string, or
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# to start with a single '-' followed by a single character, or
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# to start with a single '-' followed by a single character, a '=' and any string.
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# Examples: '--option', '--option=arg', '-o', '-o=arg', '--'
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#
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# usage:      parseIsOption <string>
148
# arguments:  <string>
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#                 A string to check whether it is an option.
150
# return:     0
151
#                 <string> is an option.
152
#             -1
153
#                 <string> is not an option.
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#
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function parseIsOption {
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  if [[ "$1" =~ ^-(.$|.=.*) ]] || [[ "$1" =~ ^--.* ]]; then
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    return 0
158
  else
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    return -1
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  fi
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}
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163
### set the log file ###########################################################
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# Sets a specified <infile> as log file and checks whether it already exists.
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# If so, the log may either be appended to the file, its content can be cleared,
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# or no log is generated at all.
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# The resulting path is stored in <outvar>.
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#
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# usage:      setLogFile [--option=<option>] [--quiet] <infile> <outvar>
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# arguments:  --option=<option>
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#                 Select what to do if <file> already exists.
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#                 Possible values are 'a', 'c', 'r' and 'n'.
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#                 - a: append (starts with a separator)
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#                 - c: continue (does not insert a seperator)
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#                 - r: delete and restart
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#                 - n: no log
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#                 If no option is secified but <file> exists, an interactive selection is provided.
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#             --quiet
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#                 Suppress all messages.
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#             <infile>
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#                 Path of the wanted log file.
182
#             <outvar>
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#                 Variable to store the path of the log file to.
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# return:     0
185
#                 No error or warning occurred.
186
#             -1
187
#                 Error: invalid input
188
#
189
function setLogFile {
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  local filepath=""
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  local option=""
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  local quiet=false
193

    
194
  # parse arguments
195
  local otherargs=()
196
  while [ $# -gt 0 ]; do
197
    if ( parseIsOption $1 ); then
198
      case "$1" in
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        -o=*|--option=*)
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          option=${1#*=}; shift 1;;
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        -o*|--option*)
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          option="$2"; shift 2;;
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        -q|--quiet)
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          quiet=true; shift 1;;
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        *)
206
          printError "invalid option: $1\n"; shift 1;;
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      esac
208
    else
209
      otherargs+=("$1")
210
      shift 1
211
    fi
212
  done
213
  filepath=$(realpath ${otherargs[0]})
214

    
215
  # if file already exists
216
  if [ -e $filepath ]; then
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    # if no option was specified, ask what to do
218
    if [ -z "$option" ]; then
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      printWarning "log file $filepath already esists\n"
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      local userinput=""
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      printf "Select what to do:\n"
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      printf "  [A] - append log\n"
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      printf "  [R] - restart log (delete existing file)\n"
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      printf "  [N] - no log\n"
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      readUserInput "AaRrNn" userinput
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      option=${userinput,,}
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    fi
228
    # evaluate option
229
    case "$option" in
230
      a|c)
231
        if [ $quiet = false ]; then
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          printInfo "appending log to $filepath\n"
233
        fi
234
        if [ $option != c ]; then
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          printf "\n" >> $filepath
236
          printf "######################################################################\n" >> $filepath
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          printf "\n" >> $filepath
238
        fi
239
        ;;
240
      r)
241
        echo -n "" > $filepath
242
        if [ $quiet = false ]; then
243
          printInfo "content of $filepath wiped\n"
244
        fi
245
        ;;
246
      n)
247
        if [ $quiet = false ]; then
248
          printInfo "no log file will be generated\n"
249
        fi
250
        filepath=""
251
        ;;
252
      *) # sanity check (return error)
253
        printError "unexpected argument: $option\n"; return -1;;
254
    esac
255
  else
256
    if [ $quiet = false ]; then
257
      printInfo "log file set to $filepath\n"
258
    fi
259
  fi
260

    
261
  eval ${otherargs[1]}="$filepath"
262

    
263
  return 0
264
}
265

    
266
### check whether commands are available #######################################
267
# Checks whether the specified commands are available and can be executed.
268
#
269
# usage:      checkCommand [<command> <command> ...]
270
# arguments:  <command>
271
#                 Name of the command to check.
272
# return:     0
273
#                 All requested commands are available.
274
#             >0
275
#                 Number of requested commands that were not found.
276
#             -1
277
#                 No argument given.
278
#
279
function checkCommands {
280
  local status=0
281

    
282
  # return if no argument was specified
283
  if [ $# -eq 0 ]; then
284
    return -1
285
  fi
286

    
287
  # check all specified commands
288
  while [ $# -gt 0 ]; do
289
    command -v $1 &>/dev/null
290
    if [ $? -ne 0 ]; then
291
      printWarning "Command '$1' not available.\n"
292
      status=$((status + 1))
293
    fi
294
    shift 1
295
  done
296

    
297
  return $status
298
}
299

    
300
################################################################################
301
# SPECIFIC FUNCTIONS                                                           #
302
################################################################################
303

    
304
### print welcome text #########################################################
305
# Prints a welcome message to standard out.
306
#
307
# usage:      printWelcomeText
308
# arguments:  n/a
309
# return:     n/a
310
#
311
function printWelcomeText {
312
  printf "######################################################################\n"
313
  printf "#                                                                    #\n"
314
  printf "#             Welcome to the AMiRo-LLD submodule setup!              #\n"
315
  printf "#                                                                    #\n"
316
  printf "######################################################################\n"
317
  printf "#                                                                    #\n"
318
  printf "# Copyright (c) 2016..2019  Thomas Schöpping                         #\n"
319
  printf "#                                                                    #\n"
320
  printf "# This is free software; see the source for copying conditions.      #\n"
321
  printf "# There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR  #\n"
322
  printf "# A PARTICULAR PURPOSE. The development of this software was         #\n"
323
  printf "# supported by the Excellence Cluster EXC 227 Cognitive Interaction  #\n"
324
  printf "# Technology. The Excellence Cluster EXC 227 is a grant of the       #\n"
325
  printf "# Deutsche Forschungsgemeinschaft (DFG) in the context of the German #\n"
326
  printf "# Excellence Initiative.                                             #\n"
327
  printf "#                                                                    #\n"
328
  printf "######################################################################\n"
329
}
330

    
331
### print help #################################################################
332
# Prints a help text to standard out.
333
#
334
# usage:      printHelp
335
# arguments:  n/a
336
# return:     n/a
337
#
338
function printHelp {
339
  printInfo "printing help text\n"
340
  printf "usage:    $(basename ${BASH_SOURCE[0]}) [-h|--help] [-i|--init] [-w|--wipe] [-q|--quit] [--log=<file>]\n"
341
  printf "options:  -h, --help\n"
342
  printf "              Print this help text.\n"
343
  printf "          -i, --init\n"
344
  printf "              Initialize AMiRo-LLD submodule.\n"
345
  printf "          -w, --wipe\n"
346
  printf "              Wipe AMiRo-LLD submodule.\n"
347
  printf "          -q, --quit\n"
348
  printf "              Quit the script.\n"
349
  printf "          --log=<file>\n"
350
  printf "              Specify a log file.\n"
351
}
352

    
353
### initialize AMiRo-LLD submodule #############################################
354
# Initialize the AMiRo-LLD submodule.
355
#
356
# usage:      initAmiroLld
357
# arguments:  n/a
358
# return:     0
359
#                 No error or warning occurred.
360
#             1
361
#                 Warning: Arborted by user.
362
#             -1
363
#                 Error: Unexpected user input.
364
#             -2
365
#                 Error: Missing dependencies.
366
#
367
function initAmiroLld {
368
  printInfo "initializing AMiRo-LLD submodule...\n"
369
  local userdir=$(pwd)
370
  local peripheryllddir=$(dirname $(realpath ${BASH_SOURCE[0]}))
371
  local amirollddir=${peripheryllddir}/AMiRo-LLD
372

    
373
  # if the AMiRo-LLD folder is not empty
374
  if [ ! -z "$(ls -A $amirollddir)" ]; then
375
    printWarning "$(realpath $amirollddir) is not empty. Delete and reinitialize? [y/n]\n"
376
    local userinput=""
377
    readUserInput "YyNn" userinput
378
    case $userinput in
379
      Y|y)
380
        wipeAmiroLld
381
        ;;
382
      N|n)
383
        printWarning "AMiRo-LLD initialization aborted by user\n"
384
        return 1
385
        ;;
386
      *) # sanity check (return error)
387
        printError "unexpected input: $userinput\n"; return -1;;
388
    esac
389
  fi
390

    
391
  # check dependencies
392
  checkCommands git
393
  if [ $? -ne 0 ]; then
394
    printError "Missing dependencies detected.\n"
395
    return -2
396
  fi
397

    
398
  # initialize submodule to default branch
399
  cd $peripheryllddir
400
  git submodule update --init $amirollddir 2>&1 | tee -a $LOG_FILE
401
  while [ ${PIPESTATUS[0]} -ne 0 ]; do
402
    printWarning "initialitaion failed. Retry? [y/n]\n"
403
    local userinput=""
404
    readUserInput "YyNn" userinput
405
    case "$userinput" in
406
      Y|y)
407
        git submodule update --init $amirollddir 2>&1 | tee -a $LOG_FILE;;
408
      N|n)
409
        printWarning "AMiRo-LLD initialization aborted by user\n"
410
        cd $userdir
411
        return 1
412
        ;;
413
      *) # sanity check (return error)
414
        printError "unexpected input: $userinput\n"; return -1;;
415
    esac
416
  done
417
  cd $userdir
418

    
419
  return 0
420
}
421

    
422
### reset AMiRo-LLD submodule and wipe directory ###############################
423
# Resets the AMiRo-LLD Git submodule and wipes the directory.
424
#
425
# usage:      wipeAmiroLld
426
# arguments:  n/a
427
# return:     0
428
#                 No error or warning occurred.
429
#             1
430
#                 Warning: AMiRo-LLD Git submodule already empty
431
#             2
432
#                 Warning: Aborted by user.
433
#             -1
434
#                 Error: Unexpected input occurred.
435
#             -2
436
#                 Error: Missing dependencies.
437
#
438
function wipeAmiroLld {
439
  printInfo "reset and wipe Git submodule $amirollddir\n"
440
  local userdir=$(pwd)
441
  local peripheryllddir=$(dirname $(realpath ${BASH_SOURCE[0]}))
442
  local amirollddir=${peripheryllddir}/AMiRo-LLD
443

    
444
  # check dependencies
445
  checkCommands git
446
  if [ $? -ne 0 ]; then
447
    printError "Missing dependencies detected.\n"
448
    return -2
449
  fi
450

    
451
  # if the AMiRo-LLD folder is empty
452
  if [ -z "$(ls -A $amirollddir)" ]; then
453
    printWarning "$amirollddir is already empty\n"
454
    return 1
455
  else
456
    # get some information from Git
457
    local userdir=$(pwd)
458
    cd $peripheryllddir
459
    local git_basehash=($(git ls-tree -d HEAD $amirollddir)); git_basehash=${git_basehash[2]}
460
    cd $amirollddir
461
    local git_branch_current=$(git rev-parse --abbrev-ref HEAD)
462
    local git_difftobase="$(git diff ${git_basehash}..HEAD)"
463
    local git_commits=$(git log --format=oneline ${git_basehash}..HEAD)
464
    local git_dirtyfiles=($(git ls-files -dmo --exclude-standard --exclude=/doc))
465
    cd $userdir
466
    local issues=0
467
    # if HEAD is ahead of submodule base commit
468
    if [ -n "$git_difftobase" ]; then
469
      issues=$((issues + 1))
470
      printWarning "HEAD is ahead of submodule base\n"
471
    fi
472
    # if there are untracked, modified, or deleted files
473
    if [ ${#git_dirtyfiles[@]} != 0 ]; then
474
      issues=$((issues + 1))
475
      printWarning "there are ${#git_dirtyfiles[@]} untracked, modified, or deleted files\n"
476
    fi
477
    if [ $issues -gt 0 ]; then
478
      local userinput=""
479
      printWarning "$issues issues detected. Do you want to continue? [y/n]\n"
480
      readUserInput "YyNn" userinput
481
      case "$userinput" in
482
        Y|y)
483
          ;;
484
        N|n)
485
          printfWarning "wiping AMiRo-LLD Git submodule aborted by user\n"
486
          return 2
487
          ;;
488
        *) # sanity check (return error)
489
          printError "unexpected input: $userinput\n"; return -1;;
490
      esac
491
    fi
492

    
493
    # checkout base commit and delete all local branches
494
    cd $peripheryllddir
495
    git submodule update --force --checkout $amirollddir | tee -a $LOG_FILE
496
    cd $amirollddir
497
    local git_branches=($(git for-each-ref --format="%(refname)"))
498
    for branch in $git_branches; do
499
      if [[ $branch = *"heads/"* ]]; then
500
        git branch -D ${branch##*/} | tee -a $LOG_FILE
501
      fi
502
    done
503
    cd $userdir
504

    
505
    # deinitialize AMiRo-LLD submodule and delete any remaining files
506
    cd $peripheryllddir
507
    git submodule deinit -f $amirollddir 2>&1 | tee -a $LOG_FILE
508
    rm -rf $amirollddir/*
509
    cd $userdir
510

    
511
    return 0
512
  fi
513
}
514

    
515
### main function of this script ###############################################
516
# Initializes or wipes the AMiRo-LLD Git submodule.
517
#
518
# usage:      see function printHelp
519
# arguments:  see function printHelp
520
# return:     0
521
#                 No error or warning occurred.
522
#
523
function main {
524
  # print welcome/info text if not suppressed
525
  if [[ $@ != *"--noinfo"* ]]; then
526
    printWelcomeText
527
  else
528
    printf "######################################################################\n"
529
  fi
530
  printf "\n"
531

    
532
  # if --help or -h was specified, print the help text and exit
533
  if [[ $@ == *"--help"* || $@ == *"-h"* ]]; then
534
    printHelp
535
    printf "\n"
536
    quitScript
537
  fi
538

    
539
  # set log file if specified
540
  if [[ $@ == *"--log"* ]] || [[ $@ == *"--LOG"* ]]; then
541
    # get the parameter (file name)
542
    local cmdidx=1
543
    while [[ ! "${!cmdidx}" = "--log"* ]] && [[ ! "${!cmdidx}" = "--LOG"* ]]; do
544
      cmdidx=$[cmdidx + 1]
545
    done
546
    local cmd="${!cmdidx}"
547
    local logfile=""
548
    if [[ "$cmd" = "--log="* ]] || [[ "$cmd" = "--LOG="* ]]; then
549
      logfile=${cmd#*=}
550
    else
551
      local filenameidx=$((cmdidx + 1))
552
      logfile="${!filenameidx}"
553
    fi
554
    # optionally force silent appending
555
    if [[ "$cmd" = "--LOG"* ]]; then
556
      setLogFile --option=c --quiet "$logfile" LOG_FILE
557
    else
558
      setLogFile "$logfile" LOG_FILE
559
      printf "\n"
560
    fi
561
  fi
562
  # log script name
563
  printLog "this is $(realpath ${BASH_SOURCE[0]})\n"
564

    
565
  # parse arguments
566
  local otherargs=()
567
  while [ $# -gt 0 ]; do
568
    if ( parseIsOption $1 ); then
569
      case "$1" in
570
        -h|--help) # already handled; ignore
571
          shift 1;;
572
        -i|--init)
573
           initAmiroLld; printf "\n"; shift 1;;
574
        -w|--wipe)
575
           wipeAmiroLld; printf "\n"; shift 1;;
576
        -q|--quit)
577
          quitScript; shift 1;;
578
        --log=*|--LOG=*) # already handled; ignore
579
          shift 1;;
580
        --log|--LOG) # already handled; ignore
581
          shift 2;;
582
        --noinfo) # already handled; ignore
583
          shift 1;;
584
        *)
585
          printError "invalid option: $1\n"; shift 1;;
586
      esac
587
    else
588
      otherargs+=("$1")
589
      shift 1
590
    fi
591
  done
592

    
593
  # interactive menu
594
  while ( true ); do
595
    # main menu info prompt and selection
596
    printInfo "Periphery-LLD setup main menu\n"
597
    printf "Please select one of the following actions:\n"
598
    printf "  [I] - initialize AMiRo-LLD submodule\n"
599
    printf "  [W] - wipe AMiRo-LLD submodule\n"
600
    printf "  [Q] - quit this setup\n"
601
    local userinput=""
602
    readUserInput "IiPpDdWwQq" userinput
603
    printf "\n"
604

    
605
    # evaluate user selection
606
    case "$userinput" in
607
      I|i)
608
        initAmiroLld; printf "\n";;
609
      W|w)
610
        wipeAmiroLld; printf "\n";;
611
      Q|q)
612
        quitScript;;
613
      *) # sanity check (exit with error)
614
        printError "unexpected argument: $userinput\n";;
615
    esac
616
  done
617

    
618
  exit 0
619
}
620

    
621
################################################################################
622
# SCRIPT ENTRY POINT                                                           #
623
################################################################################
624

    
625
main "$@"