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55 lines
1.5 KiB
C
55 lines
1.5 KiB
C
/*
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* PROJECT: ReactOS Spooler API
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* LICENSE: GPL-2.0+ (https://spdx.org/licenses/GPL-2.0+)
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* PURPOSE: Utility Functions related to Print Processors
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* COPYRIGHT: Copyright 2020 Doug Lyons (douglyons@douglyons.com)
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*/
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#include "precomp.h"
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/*
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* Converts an incoming Unicode string to an ANSI string.
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* It is only useful for "in-place" conversions where the ANSI string goes
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* back into the same place where the Unicode string came into this function.
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*
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* It returns an error code.
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*/
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// TODO: It seems that many of the functions involving printing could use this.
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DWORD UnicodeToAnsiInPlace(PWSTR pwszField)
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{
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PSTR pszTemp;
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DWORD cch;
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/*
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* Map the incoming Unicode pwszField string to an ANSI one here so that we can do
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* in-place conversion. We read the Unicode input and then we write back the ANSI
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* conversion into the same buffer for use with our GetPrinterDriverA function
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*/
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PSTR pszField = (PSTR)pwszField;
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if (!pwszField)
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{
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return ERROR_SUCCESS;
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}
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cch = wcslen(pwszField);
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if (cch == 0)
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{
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return ERROR_SUCCESS;
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}
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pszTemp = HeapAlloc(hProcessHeap, 0, (cch + 1) * sizeof(CHAR));
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if (!pszTemp)
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{
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ERR("HeapAlloc failed!\n");
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return ERROR_NOT_ENOUGH_MEMORY;
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}
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WideCharToMultiByte(CP_ACP, 0, pwszField, -1, pszTemp, cch + 1, NULL, NULL);
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StringCchCopyA(pszField, cch + 1, pszTemp);
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HeapFree(hProcessHeap, 0, pszTemp);
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return ERROR_SUCCESS;
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}
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