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146 lines
3.6 KiB
146 lines
3.6 KiB
TITLE "String support routines"
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;++
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;
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; Copyright (c) 1989 Microsoft Corporation
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;
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; Module Name:
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;
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; stringsup.asm
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;
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; Abstract:
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;
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; This module implements suplimentary routines for performing string
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; operations.
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;
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; Author:
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;
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; Larry Osterman (larryo) 18-Sep-1991
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;
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; Environment:
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;
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; Any mode.
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;
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; Revision History:
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;
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;--
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.386p
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include callconv.inc ; calling convention macros
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_TEXT SEGMENT DWORD PUBLIC 'CODE'
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ASSUME DS:FLAT, ES:FLAT, SS:NOTHING, FS:NOTHING, GS:NOTHING
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page ,132
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subttl "RtlAnsiCharToUnicodeChar"
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;++
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;
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; WCHAR
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;RtlAnsiCharToUnicodeChar(
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; IN OUT PCHAR *SourceCharacter
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; )
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;
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;
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; Routine Description:
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;
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; This function translates the specified ansi character to unicode and
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; returns the unicode value. The purpose for this routine is to allow
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; for character by character ansi to unicode translation. The
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; translation is done with respect to the current system locale
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; information.
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;
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;
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; Arguments:
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;
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; (TOS+4) = SourceCharacter - Supplies a pointer to an ansi character pointer.
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; Through two levels of indirection, this supplies an ansi
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; character that is to be translated to unicode. After
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; translation, the ansi character pointer is modified to point to
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; the next character to be converted. This is done to allow for
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; dbcs ansi characters.
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;
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; Return Value:
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;
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; Returns the unicode equivalent of the specified ansi character.
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;
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; Note:
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;
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; This routine will have to be converted to use the proper unicode mapping
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; tables.
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;
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;--
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cPublicProc _RtlAnsiCharToUnicodeChar ,1
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cPublicFpo 1,2
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push esi
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mov esi, [esp+8]
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push dword ptr [esi] ; Save the old input string
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inc dword ptr [esi] ; Bump the input string
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pop esi ; (ESI) = input string
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xor eax, eax ; Zero out the EAX register.
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lodsb ; Grab the first character from string
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pop esi
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stdRET _RtlAnsiCharToUnicodeChar
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stdENDP _RtlAnsiCharToUnicodeChar
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page
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subttl "RtlpAnsiPszToUnicodePsz"
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;++
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;
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; VOID
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; RtlpAnsiPszToUnicodePsz(
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; IN PCHAR AnsiString,
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; IN PWCHAR UnicodeString,
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; IN USHORT AnsiStringLength
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; )
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;
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;
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; Routine Description:
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;
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; This function translates the specified ansi character to unicode and
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; returns the unicode value. The purpose for this routine is to allow
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; for character by character ansi to unicode translation. The
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; translation is done with respect to the current system locale
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; information.
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;
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;
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; Arguments:
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;
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; (ESP+4) = AnsiString - Supplies a pointer to the ANSI string to convert to unicode.
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; (ESP+8) = UnicodeString - Supplies a pointer to a buffer to hold the unicode string
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; (ESP+12) = AnsiStringLength - Supplies the length of the ANSI string.
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;
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; Return Value:
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;
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; None.
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;
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;
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; Note:
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;
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; This routine will have to be converted to use the proper unicode mapping
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; tables.
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;--
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cPublicProc _RtlpAnsiPszToUnicodePsz ,3
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cPublicFpo 3,2
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push esi
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push edi
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xor ecx, ecx
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mov cx, [esp]+12+8
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jecxz raptup9
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mov esi, [esp]+4+8
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mov edi, [esp]+8+8
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xor ah, ah
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@@: lodsb
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stosw
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loop @b
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xor eax, eax
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stosw ; Don't forget to stick the null at end
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raptup9:pop edi
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pop esi
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stdRET _RtlpAnsiPszToUnicodePsz
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stdENDP _RtlpAnsiPszToUnicodePsz
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_TEXT ends
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end
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