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useless
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#!/bin/bash
# 半成品shell，无用，留作纪念
# remove_last_empty_line(){
# local file=$1
# awk 'NR>1{print p} {p=$0} END{printf "%s", p}' "$file" > temp.txt
# mv temp.txt "$file"
# }
# my_diff(){
# if [ -z "$special" ] || [ "$special" != "true" ]; then
# # echo "没有传入special参数或不是special"
# diff -B "$output_file" "$expected_file" > /dev/null
# return $?
# else
# echo "special参数的值为: $special"
# fi
# }
# judge(){
# local program=$1
# local input_file=$2
# local expected_file=$3
# local filename=$(basename "$input_file")
# local output_file="$out_dir/$filename"
# run_duration=0
# run_memory=0
# # 记录开始时间
# local start_time=$(date +%s%N)
# run_log=""
# ./$executable < $input_file > $output_file
# # 运行并监听内存消耗
# # 最内层嵌套将程序执行结果放入output
# # 创建一个临时文件方便获得运行结果
# tempfile=$(mktemp)
# run_cmd="
# # 限制内存大小
# ulimit -v $mem_out;
# "$line" >> "$file";
# // 获得空间消耗
# /usr/bin/time -v ./$executable < $input_file > $output_file;
# run_res=$?;
# echo \"Your string\" > ./kankan;
# # echo \"子进程的PID是:$$\" > ./kankan;
# # 创建一个临时文件
# tempfile=$(mktemp);
# # 向临时文件写入数据
# echo "$run_res" > "$tempfile";
# "
# local run_detail=$(/usr/bin/time -v sh -c "$run_cmd" 2>&1)
# run_res=$(<"$tempfile");
# # 删除临时文件
# rm "$tempfile"
# # run_detail=$(/usr/bin/time -v timeout "${time_out}ms" sh -c "ulimit -v $mem_out; ./$executable < $input_file > $output_file" 2>&1)
# # 记录结束时间
# local end_time=$(date +%s%N)
# if (( run_res == 134 )); then
# run_log="执行${filename}时运行错误"
# return 5
# fi
# # 计算执行时间（以毫秒为单位）
# run_duration=$((($end_time - $start_time)/1000000))
# if [ $run_duration -gt $time_out ]; then
# run_log="执行${filename}时时间超限"
# return 3
# fi
# # # 读取消耗内存
# run_memory=$(echo "$run_detail" | grep -o "Maximum resident set size (kbytes): [0-9]*" | awk '{print $NF}')
# if [ $run_memory -gt $mem_out ]; then
# # run_log="执行${filename}时内存超限"
# run_log="内存超限"
# return 4
# fi
# # # 继续处理
# remove_last_empty_line "$output_file"
# # # 比较输出与预期输出
# my_diff "$output_file" "$expected_file"
# diff_res=$?
# if [ $diff_res -eq 1 ]; then
# # run_log="执行${filename}时答案错误"
# run_log="答案错误"
# return 2
# fi
# return 0
# }
# # 返回0是没问题，1是有问题
# # echo ((编译结果,编译输出),(用例id1，判题结果，判题输出，时间(ms),内存(KB)),(用例id1(错误)，判题结果，判题输出))
# # 答案正确0
# # 编译错误1
# # 答案错误2
# # 运行超限3
# # 内存超限4
# # 运行错误5
# main() {
# echo "主进程的PID是: $$";
# mkdir $out_dir
# # 先编译
# compile $code_file
# if [ $compile_res -ne 0 ] ; then
# rm -rf $out_dir
# # echo "编译错误"
# return 1
# fi
# res=()
# # # 遍历输入文件
# for input_file in $input_dir/*; do
# # 提取文件名和扩展名
# filename=$(basename "$input_file")
# # in和out文件必须同名
# judge "./program" "$input_file" "$expected_dir/$filename"
# judge_res=$?
# # 遇到错误就返回
# if [ $judge_res -ne 0 ]; then
# res+=($filename,$judge_res,$run_log)
# rm -rf program
# rm -rf $out_dir
# return $judge_res
# else
# res+=($filename,$judge_res,$run_log,$run_duration,$run_memory)
# fi
# done
# rm -rf program
# rm -rf $out_dir
# return 0
# }
# # code_file=$1
# # input_dir=$2
# # expected_dir=$3
# # time_out=$4
# # mem_out=$5
# # special=$6
# # special_dir=$7
# code_file="test.cpp"
# input_dir="in"
# expected_dir="expect"
# out_dir="true_out"
# # s->ms, mb->kb
# time_out=$(expr 1 \* 1000)
# mem_out=$(expr 128 \* 1024)
# # mem_out=1000
# special="false"
# special_dir="special"
# main
# if [ $compile_res -ne 0 ]; then
# echo "编译错误"
# echo $compile_log
# else
# for item in "${res[@]}"
# do
# echo $item
# done
# fi