organic/scripts/run_docker_compare_bisect.bash

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#!/usr/bin/env bash
#
# Bisect parsing a file at various line cut-off points to see which line causes the parse to differ from emacs.
set -euo pipefail
IFS=$'\n\t'
DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
REALPATH=$(command -v uu-realpath || command -v realpath)
############## Setup #########################
function die {
local status_code="$1"
shift
(>&2 echo "${@}")
exit "$status_code"
}
function log {
(>&2 echo "${@}")
}
############## Program #########################
function main {
local target_full_path
target_full_path=$($REALPATH "$1")
SOURCE_FOLDER=$(dirname "$target_full_path")
TARGET_DOCUMENT=$(basename "$target_full_path")
local good=0
local bad
bad=$(wc -l "$SOURCE_FOLDER/$TARGET_DOCUMENT" | awk '{print $1}')
set +e
(run_parse "$bad")
local status=$?
set -e
if [ $status -eq 0 ]; then
log "Entire file passes."
exit 0
fi
while [[ "$((bad - good))" -gt 1 ]]; do
local next_line=$((((bad - good) / 2) + good))
log "Testing line $next_line"
set +e
run_parse "$next_line" &> /dev/null
local status=$?
set -e
if [ $status -eq 0 ]; then
good="$next_line"
log "Line $next_line good"
else
bad="$next_line"
log "Line $next_line bad"
fi
done
echo "Bad line: $bad"
}
function run_parse {
local lines="$1"
cd "$SOURCE_FOLDER"
head -n "$lines" "$SOURCE_FOLDER/$TARGET_DOCUMENT" | "${DIR}/run_docker_compare.bash"
local status=$?
return "$status"
}
main "${@}"