153 lines
4.4 KiB
C++
153 lines
4.4 KiB
C++
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//+-------------------------------------------------------------------------
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1997 - 1998.
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//
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// File: cpid.cxx
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//
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// Contents: codepage functions
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//
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// History: 97-Jun-09 t-elainc Created
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//
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//--------------------------------------------------------------------------
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#include <pch.cxx>
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#pragma hdrstop
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#include <gibralt.hxx>
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#include <codepage.hxx>
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#include <cphash.hxx>
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#include <cpid.hxx>
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//+---------------------------------------------------------------------------
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//
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// Function: GetBrowserCodepage - public
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//
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// Synposis: returns the ULONG value of the codepage determined by the
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// query string
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//
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// Arguments: CWebServer & webServer, LCID locale
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//
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// History: 97-Jun-09 t-elainc Created
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//
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//----------------------------------------------------------------------------
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ULONG GetBrowserCodepage( CWebServer & webServer, LCID locale )
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{
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ULONG cpval=0;
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//first get value of CICodepage specified in the query string
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CHAR acCPString[20];
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//if a codepage string is specified
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if ( GetCodepageValue( webServer, acCPString, sizeof(acCPString) ) )
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{
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WCHAR awcCPString[100];
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unsigned int ccString = strlen( acCPString ) + 1;
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unsigned int numconverted = MultiByteToWideChar(CP_ACP, 0, acCPString, ccString, awcCPString, 100);
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//make sure everything was converted properly. Otherwise throw an exception
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if (ccString != numconverted)
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{
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THROW ( CException () );
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}
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//Check to see if the string is one of the values in the code page hash table
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BOOL valid = CCodePageTable::Lookup(awcCPString, wcslen(awcCPString), cpval);
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//code page string is not in the hash table
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if (!valid)
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{
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CHAR* pctmp;
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cpval = strtoul(acCPString, &pctmp, 10);
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//if the codepage value is not a number
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if (!cpval)
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{
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LCID lcid = GetLCIDFromString(awcCPString);
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//if the codepage value is not a legitimate lcid
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if (InvalidLCID == lcid)
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{
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THROW ( CException (QUTIL_E_INVALID_CODEPAGE) );
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}
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//use the locale to determine the proper codepage
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cpval = LocaleToCodepage(lcid);
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}
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}
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}
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else //no codepage string specified, use locale to determine proper codepage
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{
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//ciGibDebugOut((DEB_ITRACE, "No codepage specified. Using default codepage by locale."));
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cpval = LocaleToCodepage(locale);
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}
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return cpval;
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}
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//+---------------------------------------------------------------------------
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//
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// Function: GetCodePageValue
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//
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// Synposis: Returns the string contained withing the Query String that
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// specifies the codepage. If no string is there, returns 0.
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//
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// Arguments: [webServer] -- Web server
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// [pcCPString] -- String containing CiCodepage returned here
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// [ccCPString] -- Size (in chars) of [pcCPString]
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//
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// Returns: TRUE if a codepage parameter was found and fits in buffer.
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//
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// History: 97-Jun-11 t-elainc Created
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//
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//----------------------------------------------------------------------------
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BOOL GetCodepageValue( CWebServer & webServer,
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char * pcCPString,
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unsigned ccCPString )
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{
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unsigned ccValue = 0xFFFFFFFF;
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char* ISAPI_CI_CODEPAGE_A = "CICODEPAGE";
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char const * pcStart = webServer.GetQueryString();
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while ( 0 != pcStart && 0 != pcStart[0] )
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{
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if ( 0 == _strnicmp( pcStart,
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ISAPI_CI_CODEPAGE_A,
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strlen(ISAPI_CI_CODEPAGE_A) ) &&
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'=' == pcStart[strlen(ISAPI_CI_CODEPAGE_A)] )
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break;
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pcStart = strchr( pcStart, '&' );
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if ( 0 != pcStart )
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pcStart++;
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}
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if ( 0 != pcStart && 0 != pcStart[0] )
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{
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pcStart += strlen(ISAPI_CI_CODEPAGE_A)+1; // sizeof includes null
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char* pcEnd = strchr(pcStart, '&');
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if (pcEnd)
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ccValue = CiPtrToUint( pcEnd - pcStart );
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else
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ccValue = strlen( pcStart );
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if ( ccValue < ccCPString )
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{
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strncpy( pcCPString, pcStart, ccValue );
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pcCPString[ccValue] = 0;
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}
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}
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return (ccValue < ccCPString);
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}
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