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# private variable to track folds within this script

travisFoldStack=()

function travisFoldStart() {

local foldName="${0#./} ${1}"

# get current time as nanoseconds since the beginning of the epoch

foldStartTime=$(date +%s%N)

# convert all non alphanum chars except for "-" and "." to "--"

local sanitizedFoldName=${foldName//[^[:alnum:]\-\.]/--}

# strip trailing "-"

sanitizedFoldName=${sanitizedFoldName%-}

# push the foldName onto the stack

travisFoldStack+=("${sanitizedFoldName}|${foldStartTime}")

echo ""

if [[ ${TRAVIS:-} ]]; then

echo "travis_fold:start:${sanitizedFoldName}"

echo "travis_time:start:${sanitizedFoldName}"

local enterArrow="===> ${foldName} ==>==>==>==>==>==>==>==>==>==>==>==>==>==>==>==>==>==>==>==>==>==>==>==>==>==>==>==>==>"

# keep all messages consistently wide 80chars regardless of the foldName

echo ${enterArrow:0:100}

if [[ ${2:-} != "no-xtrace" ]]; then

# turn on verbose mode so that we have better visibility into what's going on

# http://tldp.org/LDP/Bash-Beginners-Guide/html/sect_02_03.html#table_02_01

set -x

}

function travisFoldEnd() {

set +x

local foldName="${0#./} ${1}"

# convert all non alphanum chars except for "-" and "." to "--"

local sanitizedFoldName=${foldName//[^[:alnum:]\-\.]/--}

# strip trailing "-"

sanitizedFoldName=${sanitizedFoldName%-}

# consult and update travisFoldStack

local lastFoldIndex=$(expr ${#travisFoldStack[@]} - 1)

local lastFoldString=${travisFoldStack[$lastFoldIndex]}

# split the string by | and then turn that into an array

local lastFoldArray=(${lastFoldString//\|/ })

local lastSanitizedFoldName=${lastFoldArray[0]}

if [[ ${TRAVIS:-} ]]; then

local lastFoldStartTime=${lastFoldArray[1]}

local foldFinishTime=$(date +%s%N)

local foldDuration=$(expr ${foldFinishTime} - ${lastFoldStartTime})

# write into build-perf.log file

local logIndent=$(expr ${lastFoldIndex} \* 2)

printf "%6ss%${logIndent}s: %s\n" $(expr ${foldDuration} / 1000000000) " " "${foldName}" >> ${LOGS_DIR}/build-perf.log

# pop

travisFoldStack=(${travisFoldStack[@]:0:lastFoldIndex})

# check for misalignment

if [[ ${lastSanitizedFoldName} != ${sanitizedFoldName} ]]; then

echo "Travis fold mis-alignment detected! travisFoldEnd expected sanitized fold name '${lastSanitizedFoldName}', but received '${sanitizedFoldName}' (after sanitization)"

exit 1

local returnArrow="<=== ${foldName} <==<==<==<==<==<==<==<==<==<==<==<==<==<==<==<==<==<==<==<==<==<==<==<==<==<==<==<==<==<==<==<=="

# keep all messages consistently wide 80chars regardless of the foldName

echo ${returnArrow:0:100}

echo ""

if [[ ${TRAVIS:-} ]]; then

echo "travis_time:end:${sanitizedFoldName}:start=${lastFoldStartTime},finish=${foldFinishTime},duration=${foldDuration}"

echo "travis_fold:end:${sanitizedFoldName}"

}

function travisFoldReturnArrows() {

# print out return arrows so that it's easy to see the end of the script in the log

echo ""

returnArrow="<=== ${0#./} <==<==<==<==<==<==<==<==<==<==<==<==<==<==<==<==<==<==<==<==<==<==<==<==<==<==<==<==<==<==<=="

# keep all messages consistently wide 80chars regardless of the foldName

echo ${returnArrow:0:100}

echo "<==<==<==<==<==<==<==<==<==<==<==<==<==<==<==<==<==<==<==<==<==<==<==<==<==<==<==<==<==<==<==<==<==="

echo ""

}

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