CodeSOD: Finding the File

There's one challenge we rarely think about when writing file-handling code: how do we know where the file actually is? Josh H. inherited some C# code that puts a lot of thought into that. A lot.

 longFileName = "x:\\isdn\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else if (!File.Exists(longFileName)) { longFileName = "Y:\\isdnX\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "z:\\isdn\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "g:\\isdn\\a\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "g:\\isdn\\b\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "g:\\isdn\\c\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "g:\\isdn\\mbna\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "g:\\isdn\\sales\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "g:\\isdn\\w\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "g:\\isdn\\x\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "g:\\isdn\\y\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "g:\\isdn\\z\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "h:\\isdn\\a\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "h:\\isdn\\b\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "h:\\isdn\\c\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "h:\\isdn\\mbna\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "h:\\isdn\\sales\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "h:\\isdn\\w\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "h:\\isdn\\x\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "h:\\isdn\\y\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "h:\\isdn\\z\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "i:\\isdn\\a\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "i:\\isdn\\b\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "i:\\isdn\\c\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "i:\\isdn\\mbna\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "i:\\isdn\\sales\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "i:\\isdn\\w\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "i:\\isdn\\x\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "i:\\isdn\\y\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "i:\\isdn\\z\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "z:\\isdn\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "j:\\isdn\\a\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "j:\\isdn\\b\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "j:\\isdn\\c\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "j:\\isdn\\mbna\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "j:\\isdn\\sales\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "j:\\isdn\\w\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "j:\\isdn\\x\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "j:\\isdn\\y\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "j:\\isdn\\z\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "k:\\isdn\\a\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "k:\\isdn\\b\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "k:\\isdn\\c\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "k:\\isdn\\mbna\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "k:\\isdn\\sales\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "k:\\isdn\\w\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "k:\\isdn\\x\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "k:\\isdn\\y\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "k:\\isdn\\z\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "l:\\isdn\\b\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "l:\\isdn\\c\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "l:\\isdn\\mbna\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "l:\\isdn\\sales\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "l:\\isdn\\w\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "l:\\isdn\\x\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "l:\\isdn\\y\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "l:\\isdn\\z\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "m:\\isdn\\b\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "m:\\isdn\\c\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "m:\\isdn\\mbna\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "m:\\isdn\\sales\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "m:\\isdn\\w\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "m:\\isdn\\x\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "m:\\isdn\\y\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "m:\\isdn\\z\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "m:\\isdn\\a\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; else { longFileName = "l:\\isdn\\a\\" + fileName; if (File.Exists(longFileName)) fileExistsFlag = true; } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } } if (fileExistsFlag) return longFileName; else return "NOTFOUND"; }

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