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HRESULT SHUrlParse(LPCWSTR pszBase, LPCWSTR pszUrl, PSHSTRW pstrOut, DWORD dwFlags);
HRESULT SHUrlCreateFromPath(LPCWSTR pszPath, PSHSTRW pstrOut, DWORD dwFlags);

// Ansi wrappers might overwrite the unicode core's return value
// We should try to prevent that
HRESULT ReconcileHresults(HRESULT hr1, HRESULT hr2)
{
    return (hr2==S_OK) ? hr1 : hr2;
}



PRIVATE CONST WORD isSafe[96] =

/*   Bit 0       alphadigit     -- 'a' to 'z', '0' to '9', 'A' to 'Z'
**   Bit 1       Hex            -- '0' to '9', 'a' to 'f', 'A' to 'F'
**   Bit 2       valid scheme   -- alphadigit | "-" | "." | "+"
**   Bit 3       mark           -- "%" | "$"| "-" | "_" | "." | "!" | "~" | "*" | "'" | "(" | ")" | ","
*/
/*   0  1  2  3  4  5  6  7  8  9  A  B  C  D  E  F */
//    {0, 8, 0, 0, 8, 8, 0, 8, 8, 8, 8, 4, 8,12,12, 0,    /* 2x   !"#$%&'()*+,-./  */
// IE4 BETA1: allow + through unmolested.  Should consider other options
// post beta1.  12feb97 tonyci
    {0, 8, 0, 0, 8, 8, 0, 8, 8, 8, 8, 12, 8,12,12, 0,    /* 2x   !"#$%&'()*+,-./  */
     3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 8, 8, 0, 8, 0, 0,    /* 3x  0123456789:;<=>?  */
     8, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1,    /* 4x  @ABCDEFGHIJKLMNO  */
     1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 8,    /* 5X  PQRSTUVWXYZ[\]^_  */
     0, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1,    /* 6x  `abcdefghijklmno  */
     1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 8, 0};   /* 7X  pqrstuvwxyz{|}~  DEL */

PRIVATE const WCHAR hex[] = L"0123456789ABCDEF";

PRIVATE inline BOOL IsSafe(WCHAR ch, WORD mask)
{
    if(((ch > 31 ) && (ch < 128) && (isSafe[ch - 32] & mask)))
        return TRUE;

    return FALSE;
}