/*
* win32_xlate.c : Windows xlate stuff.
*
* ====================================================================
* Copyright (c) 2007 CollabNet. All rights reserved.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at http://subversion.tigris.org/license-1.html.
* If newer versions of this license are posted there, you may use a
* newer version instead, at your option.
*
* This software consists of voluntary contributions made by many
* individuals. For exact contribution history, see the revision
* history and logs, available at http://subversion.tigris.org/.
* ====================================================================
*/
#ifdef WIN32
/* Define _WIN32_DCOM for CoInitializeEx(). */
#define _WIN32_DCOM
#ifdef APR_HAVE_IPV6
#include "winsock2.h"
#include "Ws2tcpip.h"
#include "Wspiapi.h"
#endif
#include <windows.h>
#include <mlang.h>
#include <apr.h>
#include <apr_errno.h>
#include <apr_portable.h>
#include "svn_pools.h"
#include "svn_string.h"
#include "svn_utf.h"
#include "win32_xlate.h"
typedef struct win32_xlate_t
{
UINT from_page_id;
UINT to_page_id;
} win32_xlate_t;
static apr_status_t
get_page_id_from_name(UINT *page_id_p, const char *page_name, apr_pool_t *pool)
{
IMultiLanguage * mlang = NULL;
HRESULT hr;
MIMECSETINFO page_info;
WCHAR ucs2_page_name[128];
if (page_name == SVN_APR_DEFAULT_CHARSET)
{
*page_id_p = CP_ACP;
return APR_SUCCESS;
}
else if (page_name == SVN_APR_LOCALE_CHARSET)
{
OSVERSIONINFO ver_info;
ver_info.dwOSVersionInfoSize = sizeof(ver_info);
/* CP_THREAD_ACP supported only on Windows 2000 and later.*/
if (GetVersionEx(&ver_info) && ver_info.dwMajorVersion >= 5
&& ver_info.dwPlatformId == VER_PLATFORM_WIN32_NT)
{
*page_id_p = CP_THREAD_ACP;
return APR_SUCCESS;
}
/* CP_THREAD_ACP isn't supported on current system, so get locale
encoding name from APR. */
page_name = apr_os_locale_encoding(pool);
}
else if (!strcmp(page_name, "UTF-8"))
{
*page_id_p = CP_UTF8;
return APR_SUCCESS;
}
/* Use codepage identifier nnn if the codepage name is in the form
of "CPnnn".
We need this code since apr_os_locale_encoding() and svn_cmdline_init()
generates such codepage names even if they are not valid IANA charset
name. */
if ((page_name[0] == 'c' || page_name[0] == 'C')
&& (page_name[1] == 'p' || page_name[1] == 'P'))
{
*page_id_p = atoi(page_name + 2);
return APR_SUCCESS;
}
hr = CoCreateInstance(&CLSID_CMultiLanguage, NULL, CLSCTX_INPROC_SERVER,
&IID_IMultiLanguage, (void **) &mlang);
if (FAILED(hr))
return APR_EGENERAL;
/* Convert page name to wide string. */
MultiByteToWideChar(CP_UTF8, 0, page_name, -1, ucs2_page_name,
sizeof(ucs2_page_name) / sizeof(ucs2_page_name[0]));
memset(&page_info, 0, sizeof(page_info));
hr = mlang->lpVtbl->GetCharsetInfo(mlang, ucs2_page_name, &page_info);
if (FAILED(hr))
{
mlang->lpVtbl->Release(mlang);
return APR_EINVAL;
}
if (page_info.uiInternetEncoding)
*page_id_p = page_info.uiInternetEncoding;
else
*page_id_p = page_info.uiCodePage;
mlang->lpVtbl->Release(mlang);
return APR_SUCCESS;
}
apr_status_t
svn_subr__win32_xlate_open(win32_xlate_t **xlate_p, const char *topage,
const char *frompage, apr_pool_t *pool)
{
UINT from_page_id, to_page_id;
apr_status_t apr_err = APR_SUCCESS;
win32_xlate_t *xlate;
HRESULT hr;
/* First try to initialize for apartment-threaded object concurrency. */
hr = CoInitializeEx(NULL, COINIT_APARTMENTTHREADED);
if (hr == RPC_E_CHANGED_MODE)
{
/* COM already initalized for multi-threaded object concurrency. We are
neutral to object concurrency so try to initalize it in the same way
for us. */
hr = CoInitializeEx(NULL, COINIT_MULTITHREADED);
}
if (FAILED(hr))
return APR_EGENERAL;
apr_err = get_page_id_from_name(&to_page_id, topage, pool);
if (apr_err == APR_SUCCESS)
apr_err = get_page_id_from_name(&from_page_id, frompage, pool);
if (apr_err == APR_SUCCESS)
{
xlate = apr_palloc(pool, sizeof(*xlate));
xlate->from_page_id = from_page_id;
xlate->to_page_id = to_page_id;
*xlate_p = xlate;
}
CoUninitialize();
return apr_err;
}
apr_status_t
svn_subr__win32_xlate_to_stringbuf(win32_xlate_t *handle,
const char *src_data,
apr_size_t src_length,
svn_stringbuf_t **dest,
apr_pool_t *pool)
{
WCHAR * wide_str;
int retval, wide_size;
*dest = svn_stringbuf_create("", pool);
if (src_length == 0)
return APR_SUCCESS;
retval = MultiByteToWideChar(handle->from_page_id, 0, src_data, src_length,
NULL, 0);
if (retval == 0)
return apr_get_os_error();
wide_size = retval;
/* Allocate temporary buffer for small strings on stack instead of heap. */
if (wide_size <= MAX_PATH)
{
wide_str = alloca(wide_size * sizeof(WCHAR));
}
else
{
wide_str = apr_palloc(pool, wide_size * sizeof(WCHAR));
}
retval = MultiByteToWideChar(handle->from_page_id, 0, src_data, src_length,
wide_str, wide_size);
if (retval == 0)
return apr_get_os_error();
retval = WideCharToMultiByte(handle->to_page_id, 0, wide_str, wide_size,
NULL, 0, NULL, NULL);
if (retval == 0)
return apr_get_os_error();
/* Ensure that buffer is enough to hold result string and termination
character. */
svn_stringbuf_ensure(*dest, retval + 1);
(*dest)->len = retval;
retval = WideCharToMultiByte(handle->to_page_id, 0, wide_str, wide_size,
(*dest)->data, (*dest)->len, NULL, NULL);
if (retval == 0)
return apr_get_os_error();
(*dest)->len = retval;
return APR_SUCCESS;
}
#endif /* WIN32 */
