# This file contains some usefull common functions

 # Copyright 2007 Yann E. MORIN

 # Licensed under the GPL v2. See COPYING in the root of this package

 CT_OnError() {

     ret=$?

     CT_DoLog ERROR "Build failed in step \"${CT_STEP_MESSAGE[${CT_STEP_COUNT}]}\""

     for((step=(CT_STEP_COUNT-1); step>1; step--)); do

         CT_DoLog ERROR "      called in step \"${CT_STEP_MESSAGE[${step}]}\""

     done

     CT_DoLog ERROR "Error happened in \"${BASH_SOURCE[1]}\" in function \"${FUNCNAME[1]}\" (line unknown, sorry)"

     for((depth=2; ${BASH_LINENO[$((${depth}-1))]}>0; depth++)); do

         CT_DoLog ERROR "      called from \"${BASH_SOURCE[${depth}]}\" at line # ${BASH_LINENO[${depth}-1]} in function \"${FUNCNAME[${depth}]}\""

     done

     CT_DoLog ERROR "Look at \"${CT_ACTUAL_LOG_FILE}\" for more info on this error."

     exit $ret

 }

 trap CT_OnError ERR

 set -E

 set -o pipefail

 # This is crosstool-ng-0.0.1

 CT_VERSION=ng-0.0.1

 # The different log levels:

 CT_LOG_LEVEL_ERROR=0

 CT_LOG_LEVEL_WARN=1

 CT_LOG_LEVEL_INFO=2

 CT_LOG_LEVEL_EXTRA=3

 CT_LOG_LEVEL_DEBUG=4

 # Attributes

 _A_NOR="\\033[0m"

 _A_BRI="\\033[1m"

 _A_DIM="\\033[2m"

 _A_UND="\\033[4m"

 _A_BRB="\\033[5m"

 _A_REV="\\033[7m"

 _A_HID="\\033[8m"

 # Fore colors

 _F_BLK="\\033[30m"

 _F_RED="\\033[31m"

 _F_GRN="\\033[32m"

 _F_YEL="\\033[33m"

 _F_BLU="\\033[34m"

 _F_MAG="\\033[35m"

 _F_CYA="\\033[36m"

 _F_WHI="\\033[37m"

 # A function to log what is happening

 # Different log level are available:

 #   - ERROR:   A serious, fatal error occurred

 #   - WARN:    A non fatal, non serious error occurred, take your responsbility with the generated build

 #   - INFO:    Informational messages

 #   - EXTRA:   Extra informational messages

 #   - DEBUG:   Debug messages

 # Usage: CT_DoLog <level> [message]

 # If message is empty, then stdin will be logged.

 CT_DoLog() {

     local max_level

     local level

     eval max_level="\${CT_LOG_LEVEL_${CT_LOG_LEVEL_MAX}}"

     # Set the maximum log level to DEBUG if we have none

     [ -z ${max_level} ] && max_level=${CT_LOG_LEVEL_DEBUG}

     local LEVEL="$1"

     shift

     eval level="\${CT_LOG_LEVEL_${LEVEL}}"

     if [ $# -eq 0 ]; then

         cat -

     else

         echo "${1}"

     fi |( IFS="\n" # We want the full lines, even leading spaces

           cpt=0

           indent=$((2*CT_STEP_COUNT))

           while read line; do

               l="`printf \"[%-5s]%*s%s%s\" \"${LEVEL}\" \"${indent}\" \" \" \"${line}\"`"

               # There will always be a log file, be it /dev/null

               echo -e "${l}" >>"${CT_ACTUAL_LOG_FILE}"

               color="CT_${LEVEL}_COLOR"

               normal="CT_NORMAL_COLOR"

               if [ ${level} -le ${max_level} ]; then

                   echo -e "${!color}${l}${!normal}"

               else

                   ${CT_PROG_BAR}

               fi

           done

         )

     return 0

 }

 # Abort the execution with a error message

 # Usage: CT_Abort <message>

 CT_Abort() {

     CT_DoLog ERROR "$1" >&2

     exit 1

 }

 # Test a condition, and print a message if satisfied

 # Usage: CT_Test <message> <tests>

 CT_Test() {

     local ret

     local m="$1"

     shift

     test "$@" && CT_DoLog WARN "$m"

     return 0

 }

 # Test a condition, and abort with an error message if satisfied

 # Usage: CT_TestAndAbort <message> <tests>

 CT_TestAndAbort() {

     local m="$1"

     shift

     test "$@" && CT_Abort "$m"

     return 0

 }

 # Test a condition, and abort with an error message if not satisfied

 # Usage: CT_TestAndAbort <message> <tests>

 CT_TestOrAbort() {

     local m="$1"

     shift

     test "$@" || CT_Abort "$m"

     return 0

 }

 # Test the presence of a tool, or abort if not found

 # Usage: CT_HasOrAbort <tool>

 CT_HasOrAbort() {

     CT_TestAndAbort "\"${1}\" not found and needed for successfull toolchain build." -z "`which \"${1}\"`"

     return 0

 }

 # Get current date with nanosecond precision

 # On those system not supporting nanosecond precision, faked with rounding down

 # to the highest entire second

 # Usage: CT_DoDate <fmt>

 CT_DoDate() {

     date "$1" |sed -r -e 's/%N$/000000000/;'

 }

 CT_STEP_COUNT=1

 CT_STEP_MESSAGE[${CT_STEP_COUNT}]="<none>"

 # Memorise a step being done so that any error is caught

 # Usage: CT_DoStep <loglevel> <message>

 CT_DoStep() {

     local start=`CT_DoDate +%s%N`

     CT_DoLog "$1" "================================================================="

     CT_DoLog "$1" "$2"

     CT_STEP_COUNT=$((CT_STEP_COUNT+1))

     CT_STEP_LEVEL[${CT_STEP_COUNT}]="$1"; shift

     CT_STEP_START[${CT_STEP_COUNT}]="${start}"

     CT_STEP_MESSAGE[${CT_STEP_COUNT}]="$1"

     return 0

 }

 # End the step just being done

 # Usage: CT_EndStep

 CT_EndStep() {

     local stop=`CT_DoDate +%s%N`

     local duration=`printf "%032d" $((stop-${CT_STEP_START[${CT_STEP_COUNT}]})) |sed -r -e 's/([[:digit:]]{2})[[:digit:]]{7}$/\.\1/; s/^0+//; s/^\./0\./;'`

     local level="${CT_STEP_LEVEL[${CT_STEP_COUNT}]}"

     local message="${CT_STEP_MESSAGE[${CT_STEP_COUNT}]}"

     CT_STEP_COUNT=$((CT_STEP_COUNT-1))

     CT_DoLog "${level}" "${message}: done in ${duration}s"

     return 0

 }

 # Pushes into a directory, and pops back

 CT_Pushd() {

     pushd "$1" >/dev/null 2>&1

 }

 CT_Popd() {

     popd >/dev/null 2>&1

 }

 # Makes a path absolute

 # Usage: CT_MakeAbsolutePath path

 CT_MakeAbsolutePath() {

     # Try to cd in that directory

     if [ -d "$1" ]; then

         CT_Pushd "$1"

         pwd

         CT_Popd

     else

         # No such directory, fail back to guessing

         case "$1" in

             /*)  echo "$1";;

             *)   echo "`pwd`/$1";;

         esac

     fi

     return 0

 }

 # Creates a temporary directory

 # $1: variable to assign to

 # Usage: CT_MktempDir foo

 CT_MktempDir() {

     # Some mktemp do not allow more than 6 Xs

     eval "$1"="`mktemp -q -d \"${CT_BUILD_DIR}/.XXXXXX\"`"

     CT_TestOrAbort "Could not make temporary directory" -n "${!1}" -a -d "${!1}"

 }

 # Echoes the specified string on stdout until the pipe breaks.

 # Doesn't fail

 # $1: string to echo

 # Usage: CT_DoYes "" |make oldconfig

 CT_DoYes() {

     yes "$1" || true

 }