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path: root/debian/_buildscripts/local/internals/_build_common.sh
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#!/bin/bash

set -a

#----------------------------
# Color table
# Black       0;30     Dark Gray     1;30
# Blue        0;34     Light Blue    1;34
# Green       0;32     Light Green   1;32
# Cyan        0;36     Light Cyan    1;36
# Red         0;31     Light Red     1;31
# Purple      0;35     Light Purple  1;35
# Brown       0;33     Yellow        1;33
# Light Gray  0;37     White         1;37
# No Color    0
#----------------------------
CBlack='\e[0;30m'
CDarkGray='\e[1;30m'
CBlue='\e[0;34m'
CLightBlue='\e[1;34m'
CGreen='\e[0;32m'
CLightGreen='\e[1;32m'
CCyan='\e[0;36m'
CLightCyan='\e[1;36m'
CRed='\e[0;31m'
CLightRed='\e[1;31m'
CPurple='\e[0;35m'
CLightPurple='\e[1;35m'
CBrown='\e[0;33m'
CYellow='\e[1;33m'
CGray='\e[0;37m'
CWhite='\e[1;37m'
CNone='\e[0m'

set +a

#----------------------------
# Echo a colored string to tty and tee-append it to a file without color codes
# Parameters:
#  $1 - string to echo
#  $2 - log filename
#  $3 - if "y" create a new file.
function echo_and_tee()
{
	if [ "$3" = "y" ]; then
		echo -e "$1" | tee /dev/tty | sed -r "s|\x1b\[[0-9]+(;[0-9]+)?m||g" >"$2"
	else
		echo -e "$1" | tee /dev/tty | sed -r "s|\x1b\[[0-9]+(;[0-9]+)?m||g" >>"$2"
	fi
}

#----------------------------
function _set_path_variables()
{
	# Set useful path variables
	set -a
	
	#-- get desired distribution and architecture
	[[ "$DISTRO"      = "" ]] && DISTRO=$(lsb_release -is | sed -e 's/\(.*\)/\L\1/')
	[[ "$DISTRO_NAME" = "" ]] && DISTRO_NAME=$(lsb_release -cs | sed -e 's/\(.*\)/\L\1/')
	[[ "$ARCHITECTURE" = "" ]] && ARCHITECTURE=$(dpkg --print-architecture)

	REPO_DIR="$TDE_DIR/$CFG_GIT_DIR"
	REPO_TDE="$TDE_DIR/$CFG_GIT_DIR/tde"
	REPO_TDE_MAIN="$REPO_TDE/main"
	REPO_TDE_PACKAGING="$TDE_DIR/$CFG_GIT_DIR/tde/packaging/$DISTRO/$DISTRO_NAME"
	REPO_EXTRA_DEPENDENCIES="$TDE_DIR/$CFG_GIT_DIR/$CFG_EXTRA_DEPS_DIR"
	
	BUILD_DIR="$TDE_DIR/$CFG_BUILD_DIR"
	TDE_BUILD_DIR="$BUILD_DIR/build"
	TDE_DEBS_DIR="$BUILD_DIR/debs"
	
	HOOK_DIR="$TDE_DIR/$CFG_GIT_DIR/$CFG_HOOKS_DIR"
  
  SCRIPT_LOG_DIR="$TDE_DIR/$CFG_SCRIPT_LOG_DIR"
	LOG_BUILD_RESULT_FILENAME="$SCRIPT_LOG_DIR/build_result.log"  # Common build logfile
	LOG_UPDATE_REPO_FILENAME="$SCRIPT_LOG_DIR/update_repo.log"  	# Update repository logfile
	set +a
}

#----------------------------
function init_common()
{
	# Check script folder
	export SCRIPT_DIR=$(dirname $(readlink -f "$0"))
	
	# Prevent the script to be run from TDE packaging repo
	REPO_URL=$(git config --get remote.origin.url 2>/dev/null)
	if [ ! -z "$REPO_URL" ] && [ -z "${REPO_URL##*tde/packaging}" ]; then
		echo -e "${CLightRed}  --- ERROR ---${CNone}"
		echo "This script cannot be run from the TDE packaging repository."
		echo "Please follow the instructions provided, then rerun this script."
		exit 1
	fi
		
	# Read config settings
	CFG_FILE=$SCRIPT_DIR/_config.sh
	if [ -f "$CFG_FILE" ]; then
		. "$CFG_FILE"
		_set_path_variables
	else
		echo -e "${CLightRed}  --- NOTE ---${CNone}"
		echo -e "Creating TDE build configuration file from template as ${CLightPurple}$CFG_FILE${CNone}."
		echo    "Please check and modify as required, then rerun this script."
		cp "$SCRIPT_DIR/internals/_config_template.sh" "$CFG_FILE"
		exit 2
	fi
	
	# Make sure we have selected a supported distribution
	DISTROS_FILE="$SCRIPT_DIR/internals/distro_list.txt"
	if [ ! -f "$DISTROS_FILE" ]; then
		echo -e "${CLightRed}  --- ERROR ---${CNone}"
		echo    "Could not find the list of supported distributions."
		echo -e "Please check the file ${CLightPurple}$DISTROS_FILE${CNone} exists, then rerun this script."
		exit 3
	fi
	# -- Need to use a "here string" otherwise if the DISTRO_FOUND value is modified
	# -- inside the while loop, this would not remember after the loop.
	DISTRO_FOUND="n"
	OLD_IFS=$IFS && IFS=$' \t'
	while read l_distro l_version l_name l_rel_suffix l_packaging_path; do
		if [ "$l_distro" = "$DISTRO" -a "$l_name" = "$DISTRO_NAME" ]; then
			DISTRO_FOUND="y"
			l_rel_suffix=`echo "$l_rel_suffix" | perl -pe "s|^[\"-]?(.*?)[\"]?$|\1|g"`
			l_packaging_path=`echo "$l_packaging_path" | perl -pe "s|^[\"-]?(.*?)[\"]?$|\1|g"`
			export DISTRO_VERSION="$l_version"
			export REL_SUFFIX="$l_rel_suffix"
			if [[ ! -z "$l_packaging_path" ]]; then
				REPO_TDE_PACKAGING="$TDE_DIR/$CFG_GIT_DIR/tde/packaging/$l_packaging_path"
			fi
			break
		fi
	done <<< $(sed -n "s|\(^[\s]*[^#\s]\+.*$\)|\1|p" < $DISTROS_FILE)
	IFS=$OLD_IFS
	if [ "$DISTRO_FOUND" != "y" ]; then
		echo -e "${CLightRed}  --- ERROR ---${CNone}"
		echo -e "The specified distribution (${CYellow}$DISTRO $DISTRO_NAME${CNone}) is not supported."
		echo -e "Something is wrong with your configuration (${CLightPurple}$CFG_FILE${CNone})"
		echo -e "or with the list of supported distributions (${CLightPurple}$DISTROS_FILE${CNone})."
		echo -e "Please check the ${CLightCyan}DISTRO${CNone} and ${CLightCyan}DISTRO_NAME${CNone} variables, then rerun this script."
		exit 4
	fi
	
	# TDE root folder must exist
	if [ ! -d "$TDE_DIR" ]; then 
		echo -e "${CLightRed}  --- ERROR ---${CNone}"
		echo    "A valid TDE root folder could not be located. Something is wrong with your configuration"
		echo -e "in the config file ${CLightPurple}$CFG_FILE${CNone}"
		echo -e "Please check and modify the ${CLightCyan}TDE_DIR${CNone} variable as required, then rerun this script."
		exit 5
	fi
	
	# Search for main TDE repo
	CURR_DIR=""
	[ -d "$REPO_TDE_MAIN" ] && cd "$REPO_TDE_MAIN" &>/dev/null && \
			CURR_DIR=$(git rev-parse --show-toplevel 2>/dev/null)
	if [ -z "$CURR_DIR" ]; then 
		echo -e "${CLightRed}  --- ERROR ---${CNone}"
		echo    "The main TDE repo could not be located. Something is wrong with your configuration"
		echo -e "in the config file ${CLightPurple}$CFG_FILE${CNone}"
		echo -e "Please check and modify the ${CLightCyan}TDE_DIR${CNone} variable as required, then rerun this script."
		exit 6
	fi
	
	# Check branch configuration
	# - branch existance
	UPDATE_BRANCHES="${OVERRIDE_UPDATE_BRANCHES:-$UPDATE_BRANCHES}"
	cd "$REPO_TDE"
	BRANCHES=()
	REMOTE_BRANCHES=(`git branch --remote | grep -v "HEAD" | sed "s|origin/||g"`)
	for br in $UPDATE_BRANCHES; do
		branch=`echo "$br" | sed -e "s|^[[:space:]]*||" -e "s|[[:space:]]*$||"`
		found=0
		for rem_br in "${REMOTE_BRANCHES[@]}"; do
      if [[ "$rem_br" == "$branch" ]]; then
        found=1
        break
      fi
    done
		if [[ found -eq 1 ]]; then
			BRANCHES+=($branch)
		else
			echo -e "${CLightRed}  --- ERROR ---${CNone}"
			echo -e "Invalid branch specified (${CYellow}$branch${CNone}). Something is wrong with your configuration"
			echo -e "in the config file ${CLightPurple}$CFG_FILE${CNone}"
			echo -e "Please check and modify the ${CLightCyan}UPDATE_BRANCHES${CNone} variable as required, then rerun this script."
			exit 8
		fi
	done
	if [ ${#BRANCHES[@]} -eq 0 ]; then
		echo -e "${CLightRed}  --- ERROR ---${CNone}"
		echo -e "No valid branch was specified. Something is wrong with your configuration"
		echo -e "in the config file ${CLightPurple}$CFG_FILE${CNone}"
		echo -e "Please check and modify the ${CLightCyan}UPDATE_BRANCHES${CNone} variable as required, then rerun this script."
		exit 9
	fi
	export BRANCHES
	# - default branch
	DEFAULT_REPO_BRANCH=${OVERRIDE_DEFAULT_REPO_BRANCH:-"$DEFAULT_REPO_BRANCH"}
	found=0
	for branch in "${BRANCHES[@]}"; do
		if [[ "$DEFAULT_REPO_BRANCH" == "$branch" ]]; then
			found=1
			break
		fi
	done
	if [[ found -ne 1 ]]; then
		echo -e "${CLightRed}  --- ERROR ---${CNone}"
		echo -e "Invalid default repo branch specified (${CYellow}$DEFAULT_REPO_BRANCH${CNone}). Something is wrong with your configuration"
		echo -e "in the config file ${CLightPurple}$CFG_FILE${CNone}"
		echo -e "Please check and modify the ${CLightCyan}DEFAULT_REPO_BRANCH${CNone} variable as required, then rerun this script."
		exit 10
	fi
  
  cd "$SCRIPT_DIR"
}


#----------------------------
# Save execution start time
# Parameters:
#  $1 - timer number
function exec_time_start()
{
  _ET_start_var="_ET_start_$1"
  eval "$_ET_start_var=`date +%s.%N`"
}


#----------------------------
# Save execution stop time and set $2 to the execution time
# in the format: dd/hh:mm:ss.mmm
# Parameters:
#  $1 - timer number
#  $2 - result variable name
function exec_time_stop()
{
  _ET_start_var="_ET_start_$1"
  _ET_stop_var="_ET_stop_$1"
  eval "$_ET_stop_var=`date +%s.%N`"
  _ET_diff=`echo "${!_ET_stop_var} - ${!_ET_start_var}" | bc`
  _ET_days=`echo "$_ET_diff/86400" | bc`
  _ET_diff_day=`echo "$_ET_diff-86400*$_ET_days" | bc`
  _ET_hours=`echo "$_ET_diff_day/3600" | bc`
  _ET_diff_hour=`echo "$_ET_diff_day-3600*$_ET_hours" | bc`
  _ET_mins=`echo "$_ET_diff_hour/60" | bc`
  _ET_secs=`echo "$_ET_diff_hour-60*$_ET_mins" | bc`
  local _resultvar=$2
  eval "$_resultvar=`printf \"%02d/%02d:%02d:%06.3f\" $_ET_days $_ET_hours $_ET_mins $_ET_secs`"
}