# coding=utf-8
import commands

from settings import lrun_uid, lrun_gid
from judge_exceptions import CompileError
from utils import parse_lrun_output


def compile_(language_item, src_path, exe_path):
    compile_command = language_item["compile_command"].format(src_path=src_path, exe_path=exe_path)

    # 防止编译器卡死 或者 include </dev/random>等
    execute_command = "lrun" + \
                      " --max-real-time 5" + \
                      " --uid " + str(lrun_uid) + \
                      " --gid " + str(lrun_gid) + \
                      " " + \
                      compile_command + \
                      " 3>&2"
    status, output = commands.getstatusoutput(execute_command)

    output_start = output.rfind("MEMORY")

    if output_start == -1:
        raise CompileError("Error running compiler in lrun")

    # 返回值不为0 或者 stderr中lrun的输出之前有东西
    if status or output_start:
        raise CompileError(output[0:output_start])

    parse_result = parse_lrun_output(output)

    if parse_result["exit_code"] or parse_result["term_sig"] or parse_result["siginaled"] or parse_result["exceed"]:
        raise CompileError("Compile error")

    # 对于正常编译和超时等其他的错误
    return exe_path