+inline bool IsSpecialFileName(const WCHAR* pName)
+{
+ /* specical file names are devices that the system can open
+ * these include AUX, CON, NUL, PRN, COMx, LPTx, CLOCK$, CONIN$, CONOUT$
+ * (x is a single digit, and names are case-insensitive)
+ */
+ WCHAR ch = (pName[0] & ~0x20);
+ switch (ch)
+ {
+ case 'A': /* AUX */
+ if (((pName[1] & ~0x20) == 'U')
+ && ((pName[2] & ~0x20) == 'X')
+ && !pName[3])
+ return true;
+ break;
+ case 'C': /* CLOCK$, COMx, CON, CONIN$ CONOUT$ */
+ ch = (pName[1] & ~0x20);
+ switch (ch)
+ {
+ case 'L': /* CLOCK$ */
+ if (((pName[2] & ~0x20) == 'O')
+ && ((pName[3] & ~0x20) == 'C')
+ && ((pName[4] & ~0x20) == 'K')
+ && (pName[5] == '$')
+ && !pName[6])
+ return true;
+ break;
+ case 'O': /* COMx, CON, CONIN$ CONOUT$ */
+ if ((pName[2] & ~0x20) == 'M') {
+ if ((pName[3] >= '1') && (pName[3] <= '9')
+ && !pName[4])
+ return true;
+ }
+ else if ((pName[2] & ~0x20) == 'N') {
+ if (!pName[3])
+ return true;
+ else if ((pName[3] & ~0x20) == 'I') {
+ if (((pName[4] & ~0x20) == 'N')
+ && (pName[5] == '$')
+ && !pName[6])
+ return true;
+ }
+ else if ((pName[3] & ~0x20) == 'O') {
+ if (((pName[4] & ~0x20) == 'U')
+ && ((pName[5] & ~0x20) == 'T')
+ && (pName[6] == '$')
+ && !pName[7])
+ return true;
+ }
+ }
+ break;
+ }
+ break;
+ case 'L': /* LPTx */
+ if (((pName[1] & ~0x20) == 'U')
+ && ((pName[2] & ~0x20) == 'X')
+ && (pName[3] >= '1') && (pName[3] <= '9')
+ && !pName[4])
+ return true;
+ break;
+ case 'N': /* NUL */
+ if (((pName[1] & ~0x20) == 'U')
+ && ((pName[2] & ~0x20) == 'L')
+ && !pName[3])
+ return true;
+ break;
+ case 'P': /* PRN */
+ if (((pName[1] & ~0x20) == 'R')
+ && ((pName[2] & ~0x20) == 'N')
+ && !pName[3])
+ return true;
+ break;
+ }
+ return false;
+}
+