我有一個大的(閱讀:夢魘)方法已經經過多年的成長,支持我的項目的不斷增長的命令行參數列表。我的意思是幾頁自述文檔,用於每個參數的簡要說明。掰開長的命令行測試方法
正如我添加的每個功能,我只需「註冊」的通過添加幾行,以這種方法處理這一論點的方式。
然而,該方法是目前不雅觀,容易出現錯誤,而且很難理解。下面是目前處理這兩種方法中較短的一個的例子:
//All double dash arguments modify global options of the program,
//such as --all --debug --timeout etc.
void consoleParser::wordArgParse(std::vector<criterion *> *results)
{
TCHAR const *compareCurWordArg = curToken.c_str()+2;
if (!_tcsicmp(compareCurWordArg,_T("all")))
{
globalOptions::showall = TRUE;
} else if (!_tcsnicmp(compareCurWordArg,_T("custom"),6))
{
if (curToken[9] == L':')
{
globalOptions::display = curToken.substr(10,curToken.length()-11);
} else
{
globalOptions::display = curToken.substr(9,curToken.length()-10);
}
} else if (*compareCurWordArg == L'c' || *compareCurWordArg == L'C')
{
if (curToken[3] == L':')
{
globalOptions::display = curToken.substr(5,curToken.length()-6);
} else
{
globalOptions::display = curToken.substr(4,curToken.length()-5);
}
} else if (!_tcsicmp(compareCurWordArg,_T("debug")))
{
globalOptions::debug = TRUE;
} else if (!_tcsicmp(compareCurWordArg,L"expand"))
{
globalOptions::expandRegex = false;
} else if (!_tcsicmp(compareCurWordArg,L"fileLook"))
{
globalOptions::display = L"---- #f ----#nCompany: #d#nFile Description: #e#nFile Version: #g"
L"#nProduct Name: #i#nCopyright: #j#nOriginal file name: #k#nFile Size: #u#nCreated Time: #c"
L"#nModified Time: #m#nAccessed Time: #a#nMD5: #5#nSHA1: #1";
} else if (!_tcsicmp(compareCurWordArg,_T("peinfo")))
{
globalOptions::display = _T("[#p] #f");
} else if (!_tcsicmp(compareCurWordArg,L"enable-filesystem-redirector-64"))
{
globalOptions::disable64Redirector = false;
} else if (!_tcsnicmp(compareCurWordArg,_T("encoding"),8))
{
//Performance enhancement -- encoding compare only done once.
compareCurWordArg += 8;
if (!_tcsicmp(compareCurWordArg,_T("acp")))
{
globalOptions::encoding = globalOptions::ENCODING_TYPE_ACP;
} else if (!_tcsicmp(compareCurWordArg,_T("oem")))
{
globalOptions::encoding = globalOptions::ENCODING_TYPE_OEM;
} else if (!_tcsicmp(compareCurWordArg,_T("utf8")))
{
globalOptions::encoding = globalOptions::ENCODING_TYPE_UTF8;
} else if (!_tcsicmp(compareCurWordArg,_T("utf16")))
{
globalOptions::encoding = globalOptions::ENCODING_TYPE_UTF16;
} else
{
throw eMsg(L"Unrecognised encoding word argument!\r\nValid choices are --encodingACP --encodingOEM --encodingUTF8 and --encodingUTF16. Terminate.");
}
} else if (!_tcsnicmp(compareCurWordArg,L"files",5))
{
compareCurWordArg += 5;
if (*compareCurWordArg == L':') compareCurWordArg++;
std::wstring filePath(compareCurWordArg);
globalOptions::regexes.insert(globalOptions::regexes.end(), new filesRegexPlaceHolder);
results->insert(results->end(),new filesRegexPlaceHolder);
boost::algorithm::trim_if(filePath,std::bind2nd(std::equal_to<wchar_t>(),L'"'));
loadFiles(filePath);
} else if (!_tcsicmp(compareCurWordArg,_T("full")))
{
globalOptions::fullPath = TRUE;
} else if (!_tcsicmp(compareCurWordArg,_T("fs32")))
{
globalOptions::disable64Redirector = false;
} else if (!_tcsicmp(compareCurWordArg,_T("long")))
{
globalOptions::display = _T("#t #s #m #f");
globalOptions::summary = TRUE;
} else if (!_tcsnicmp(compareCurWordArg,_T("limit"),5))
{
compareCurWordArg += 5;
if (*compareCurWordArg == _T(':'))
compareCurWordArg++;
globalOptions::lineLimit = _tcstoui64(compareCurWordArg,NULL,10);
if (!globalOptions::lineLimit)
{
std::wcerr << eMsg(L"Warning: You are limiting to infinity lines. Check one of your --limit options!\r\n");
}
} else if (!_tcsicmp(compareCurWordArg,_T("short")))
{
globalOptions::display = _T("#8");
} else if (!_tcsicmp(compareCurWordArg,_T("summary")))
{
globalOptions::summary = TRUE;
} else if (!_tcsicmp(compareCurWordArg,_T("norecursion")))
{
globalOptions::noSubDirs = TRUE;
} else if (!_tcsnicmp(compareCurWordArg,_T("timeout"),7))
{
compareCurWordArg += 7;
if (*compareCurWordArg == _T(':'))
compareCurWordArg++;
globalOptions::timeout = _tcstoul(compareCurWordArg,NULL,10);
if (!globalOptions::timeout)
{
std::wcerr << eMsg(L"Warning: You are limiting to infinite time. Check one of your --timeout options!\r\n");
}
} else if (!_tcsnicmp(compareCurWordArg,_T("tx"),2))
{
compareCurWordArg += 2;
if (*compareCurWordArg == _T(':'))
compareCurWordArg++;
globalOptions::timeout = _tcstoul(compareCurWordArg,NULL,10);
if (!globalOptions::timeout)
{
std::wcerr << eMsg(L"Warning: You are limiting to infinite time. Check one of your --timeout options!\r\n");
}
} else
{
throw eMsg(L"Could not understand word argument! Ensure all of your directives are spelled correctly. Terminate.");
}
}
我會張貼長一個,但它超過500行。
是處理這方面的問題有更好的方法,或者我應該只是把它作爲一個長期的方法?
編輯:我不是在尋找一個符號化庫 - 我已經做了的骯髒的工作。我很好奇,如果用更大的骯髒方法制作存根方法是有意義的。
Billy3
增強庫(我已經使用boost)支持讀取以下作爲一個單一論據? [-files「C:\ Documents and Settings \ User \ Desktop \ InFile.txt」]請注意令牌如何不被引用,並且確實包含空格。引號在標記本身內部開始。 – 2009-05-20 02:35:04
嘗試一下,它的使用非常簡單。 – 2009-05-20 03:19:31