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644 lines
13 KiB
644 lines
13 KiB
/*++
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Copyright (c) 1990 Microsoft Corporation
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Module Name:
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lcompat.c
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Abstract:
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This module implements the _l and l compatability functions
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like _lread, lstrlen...
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Author:
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Mark Lucovsky (markl) 13-Mar-1991
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Revision History:
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--*/
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#include "basedll.h"
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int
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WINAPI
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_lopen(
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LPCSTR lpPathName,
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int iReadWrite
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)
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{
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HANDLE hFile;
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DWORD DesiredAccess;
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DWORD ShareMode;
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DWORD CreateDisposition;
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SetLastError(0);
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//
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// Compute Desired Access
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//
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if ( iReadWrite & OF_WRITE ) {
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DesiredAccess = GENERIC_WRITE;
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} else {
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DesiredAccess = GENERIC_READ;
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}
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if ( iReadWrite & OF_READWRITE ) {
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DesiredAccess |= (GENERIC_READ | GENERIC_WRITE);
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}
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//
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// Compute ShareMode
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//
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ShareMode = BasepOfShareToWin32Share ((DWORD)iReadWrite);
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CreateDisposition = OPEN_EXISTING;
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//
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// Open the file
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//
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hFile = CreateFile (lpPathName,
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DesiredAccess,
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ShareMode,
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NULL,
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CreateDisposition,
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0,
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NULL);
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return (HFILE)HandleToUlong (hFile);
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}
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HFILE
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WINAPI
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_lcreat(
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LPCSTR lpPathName,
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int iAttribute
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)
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{
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HANDLE hFile;
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DWORD DesiredAccess;
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DWORD ShareMode;
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DWORD CreateDisposition;
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SetLastError(0);
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//
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// Compute Desired Access
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//
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DesiredAccess = (GENERIC_READ | GENERIC_WRITE);
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ShareMode = FILE_SHARE_READ | FILE_SHARE_WRITE;;
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//
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// Compute Create Disposition
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//
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CreateDisposition = CREATE_ALWAYS;
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//
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// Open the file
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//
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hFile = CreateFile (lpPathName,
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DesiredAccess,
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ShareMode,
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NULL,
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CreateDisposition,
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iAttribute & FILE_ATTRIBUTE_VALID_FLAGS,
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NULL);
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return (HFILE)HandleToUlong (hFile);
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}
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UINT
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WINAPI
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_lread(
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HFILE hFile,
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LPVOID lpBuffer,
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UINT uBytes
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)
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{
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DWORD BytesRead;
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BOOL b;
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b = ReadFile ((HANDLE)IntToPtr (hFile),
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lpBuffer,
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(DWORD)uBytes,
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&BytesRead,
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NULL);
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if (b) {
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return BytesRead;
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} else {
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return (DWORD)0xffffffff;
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}
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}
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UINT
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WINAPI
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_lwrite(
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HFILE hFile,
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LPCSTR lpBuffer,
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UINT uBytes
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)
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{
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DWORD BytesWritten;
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BOOL b;
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if (uBytes) {
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b = WriteFile ((HANDLE)IntToPtr(hFile),
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(CONST VOID *)lpBuffer,
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(DWORD)uBytes,
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&BytesWritten,
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NULL);
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} else {
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BytesWritten = 0;
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b = SetEndOfFile((HANDLE)IntToPtr(hFile));
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}
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if (b) {
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return BytesWritten;
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} else {
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return (DWORD)0xffffffff;
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}
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}
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HFILE
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WINAPI
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_lclose(
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HFILE hFile
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)
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{
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BOOL b;
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b = CloseHandle ((HANDLE)IntToPtr (hFile));
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if (b) {
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return (HFILE)0;
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} else {
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return (HFILE)-1;
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}
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}
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LONG
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WINAPI
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_llseek(
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HFILE hFile,
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LONG lOffset,
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int iOrigin
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)
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{
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DWORD SeekType;
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switch (iOrigin) {
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case 0:
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SeekType = FILE_BEGIN;
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break;
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case 1:
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SeekType = FILE_CURRENT;
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break;
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case 2:
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SeekType = FILE_END;
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break;
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default:
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return -1;
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}
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return (int)SetFilePointer ((HANDLE)IntToPtr (hFile), lOffset, NULL, SeekType);
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}
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#if defined(_AMD64_) || defined(_IA64_)
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int
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WINAPI
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MulDiv (
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int nNumber,
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int nNumerator,
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int nDenominator
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)
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{
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LONG Negate;
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union {
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LARGE_INTEGER Product;
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struct {
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ULONG Quotient;
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ULONG Remainder;
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};
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} u;
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//
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// Compute the size of the result.
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//
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Negate = nNumber ^ nNumerator ^ nDenominator;
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//
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// Get the absolute value of the operand values.
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//
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if (nNumber < 0) {
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nNumber = - nNumber;
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}
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if (nNumerator < 0) {
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nNumerator = - nNumerator;
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}
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if (nDenominator < 0) {
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nDenominator = - nDenominator;
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}
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//
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// Compute the 64-bit product of the multiplier and multiplicand
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// values and round.
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//
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u.Product.QuadPart =
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Int32x32To64(nNumber, nNumerator) + ((ULONG)nDenominator / 2);
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//
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// If there are any high order product bits, then the quotient has
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// overflowed.
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//
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if ((ULONG)nDenominator > u.Remainder) {
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//
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// Divide the 64-bit product by the 32-bit divisor forming a 32-bit
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// quotient and a 32-bit remainder.
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//
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u.Quotient = RtlEnlargedUnsignedDivide(*(PULARGE_INTEGER)&u.Product,
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(ULONG)nDenominator,
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&u.Remainder);
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//
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// Compute the final signed result.
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//
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if ((LONG)u.Quotient >= 0) {
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if (Negate >= 0) {
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return (LONG)u.Quotient;
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} else {
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return - (LONG)u.Quotient;
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}
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}
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}
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return - 1;
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}
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#endif
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int
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APIENTRY
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lstrcmpA(
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LPCSTR lpString1,
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LPCSTR lpString2
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)
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{
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int retval;
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retval = CompareStringA( GetThreadLocale(),
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LOCALE_USE_CP_ACP,
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lpString1,
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-1,
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lpString2,
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-1 );
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if (retval == 0) {
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//
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// The caller is not expecting failure. Try the system
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// default locale id.
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//
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retval = CompareStringA( GetSystemDefaultLCID(),
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LOCALE_USE_CP_ACP,
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lpString1,
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-1,
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lpString2,
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-1 );
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}
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if (retval == 0) {
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if (lpString1 && lpString2) {
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//
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// The caller is not expecting failure. We've never had a
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// failure indicator before. We'll do a best guess by calling
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// the C runtimes to do a non-locale sensitive compare.
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//
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return strcmp(lpString1, lpString2);
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} else if (lpString1) {
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return (1);
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} else if (lpString2) {
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return (-1);
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} else {
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return (0);
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}
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}
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return (retval - 2);
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}
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int
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APIENTRY
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lstrcmpiA(
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LPCSTR lpString1,
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LPCSTR lpString2
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)
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{
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int retval;
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retval = CompareStringA( GetThreadLocale(),
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LOCALE_USE_CP_ACP | NORM_IGNORECASE,
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lpString1,
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-1,
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lpString2,
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-1 );
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if (retval == 0) {
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//
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// The caller is not expecting failure. Try the system
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// default locale id.
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//
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retval = CompareStringA( GetSystemDefaultLCID(),
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LOCALE_USE_CP_ACP | NORM_IGNORECASE,
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lpString1,
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-1,
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lpString2,
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-1 );
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}
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if (retval == 0) {
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if (lpString1 && lpString2) {
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//
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// The caller is not expecting failure. We've never had a
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// failure indicator before. We'll do a best guess by calling
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// the C runtimes to do a non-locale sensitive compare.
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//
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return ( _stricmp(lpString1, lpString2) );
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} else if (lpString1) {
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return (1);
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} else if (lpString2) {
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return (-1);
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} else {
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return (0);
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}
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}
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return (retval - 2);
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}
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LPSTR
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APIENTRY
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lstrcpyA(
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LPSTR lpString1,
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LPCSTR lpString2
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)
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{
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try {
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return strcpy (lpString1, lpString2);
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} except (EXCEPTION_EXECUTE_HANDLER) {
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return NULL;
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}
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}
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LPSTR
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APIENTRY
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lstrcpynA(
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LPSTR lpString1,
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LPCSTR lpString2,
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int iMaxLength
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)
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{
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LPSTR src,dst;
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try {
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src = (LPSTR)lpString2;
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dst = lpString1;
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if ( iMaxLength ) {
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while(iMaxLength && *src){
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*dst++ = *src++;
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iMaxLength--;
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}
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if ( iMaxLength ) {
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*dst = '\0';
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} else {
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dst--;
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*dst = '\0';
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}
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}
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} except (EXCEPTION_EXECUTE_HANDLER) {
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return NULL;
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}
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return lpString1;
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}
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LPSTR
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APIENTRY
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lstrcatA(
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LPSTR lpString1,
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LPCSTR lpString2
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)
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{
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try {
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return strcat (lpString1, lpString2);
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} except (EXCEPTION_EXECUTE_HANDLER) {
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return NULL;
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}
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}
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int
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APIENTRY
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lstrlenA(
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LPCSTR lpString
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)
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{
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if (!lpString) {
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return 0;
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}
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try {
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return strlen(lpString);
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} except (EXCEPTION_EXECUTE_HANDLER) {
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return 0;
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}
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}
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int
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APIENTRY
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lstrcmpW(
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LPCWSTR lpString1,
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LPCWSTR lpString2
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)
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{
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int retval;
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retval = CompareStringW( GetThreadLocale(),
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0,
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lpString1,
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-1,
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lpString2,
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-1 );
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if (retval == 0) {
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//
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// The caller is not expecting failure. Try the system
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// default locale id.
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//
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retval = CompareStringW( GetSystemDefaultLCID(),
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0,
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lpString1,
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-1,
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lpString2,
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-1 );
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}
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if (retval == 0) {
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if (lpString1 && lpString2) {
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//
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// The caller is not expecting failure. We've never had a
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// failure indicator before. We'll do a best guess by calling
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// the C runtimes to do a non-locale sensitive compare.
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//
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return ( wcscmp(lpString1, lpString2) );
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} else if (lpString1) {
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return (1);
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} else if (lpString2) {
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return (-1);
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} else {
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return (0);
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}
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}
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return (retval - 2);
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}
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int
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APIENTRY
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lstrcmpiW(
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LPCWSTR lpString1,
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LPCWSTR lpString2
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)
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{
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int retval;
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retval = CompareStringW( GetThreadLocale(),
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NORM_IGNORECASE,
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lpString1,
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-1,
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lpString2,
|
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-1 );
|
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if (retval == 0) {
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//
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// The caller is not expecting failure. Try the system
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// default locale id.
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//
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retval = CompareStringW( GetSystemDefaultLCID(),
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NORM_IGNORECASE,
|
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lpString1,
|
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-1,
|
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lpString2,
|
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-1 );
|
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}
|
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if (retval == 0) {
|
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if (lpString1 && lpString2) {
|
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//
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// The caller is not expecting failure. We've never had a
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// failure indicator before. We'll do a best guess by calling
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// the C runtimes to do a non-locale sensitive compare.
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//
|
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return ( _wcsicmp(lpString1, lpString2) );
|
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} else if (lpString1) {
|
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return (1);
|
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} else if (lpString2) {
|
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return (-1);
|
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} else {
|
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return (0);
|
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}
|
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}
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return (retval - 2);
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}
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|
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LPWSTR
|
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APIENTRY
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lstrcpyW(
|
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LPWSTR lpString1,
|
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LPCWSTR lpString2
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)
|
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{
|
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try {
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return wcscpy (lpString1, lpString2);
|
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} except (EXCEPTION_EXECUTE_HANDLER) {
|
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return NULL;
|
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}
|
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}
|
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|
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LPWSTR
|
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APIENTRY
|
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lstrcpynW(
|
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LPWSTR lpString1,
|
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LPCWSTR lpString2,
|
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int iMaxLength
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)
|
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{
|
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LPWSTR src,dst;
|
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|
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try {
|
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src = (LPWSTR)lpString2;
|
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dst = lpString1;
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|
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if ( iMaxLength ) {
|
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while(iMaxLength && *src){
|
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*dst++ = *src++;
|
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iMaxLength--;
|
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}
|
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if ( iMaxLength ) {
|
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*dst = '\0';
|
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} else {
|
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dst--;
|
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*dst = '\0';
|
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}
|
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}
|
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} except (EXCEPTION_EXECUTE_HANDLER) {
|
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return NULL;
|
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}
|
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|
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return lpString1;
|
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}
|
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|
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LPWSTR
|
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APIENTRY
|
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lstrcatW(
|
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LPWSTR lpString1,
|
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LPCWSTR lpString2
|
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)
|
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{
|
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try {
|
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return wcscat (lpString1, lpString2);
|
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} except (EXCEPTION_EXECUTE_HANDLER) {
|
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return NULL;
|
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}
|
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}
|
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|
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int
|
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APIENTRY
|
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lstrlenW(
|
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LPCWSTR lpString
|
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)
|
|
{
|
|
if (!lpString) {
|
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return 0;
|
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}
|
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try {
|
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return wcslen (lpString);
|
|
} except (EXCEPTION_EXECUTE_HANDLER) {
|
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return 0;
|
|
}
|
|
}
|