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/*
Copyright(C) 2018 Brazil
Copyright(C) 2022 Sutou Kouhei <kou@clear-code.com>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <stdio.h>
#include "grn.h"
#include "grn_ctx.h"
#include "grn_encoding.h"
#include "grn_windows.h"
#include <string.h>
#ifdef WIN32
static const char *
grn_encoding_convert(grn_ctx *ctx,
const char *context,
UINT from_code_page,
UINT to_code_page,
const char *from_string,
ssize_t from_string_size,
size_t *converted_string_size)
{
char *converted_string = NULL;
if (from_string_size < 0) {
from_string_size = strlen(from_string);
}
if (from_code_page == to_code_page) {
goto exit;
}
{
WCHAR *utf16_string;
DWORD n_utf16_chars;
size_t converted_string_size_;
n_utf16_chars = MultiByteToWideChar(from_code_page,
0,
from_string,
from_string_size,
NULL,
0);
if (n_utf16_chars == 0) {
SERR("%s failed to estimate the number of UTF-16 characters",
context);
goto exit;
}
utf16_string = GRN_MALLOCN(WCHAR, n_utf16_chars);
n_utf16_chars = MultiByteToWideChar(from_code_page,
0,
from_string,
from_string_size,
utf16_string,
n_utf16_chars);
if (n_utf16_chars == 0) {
SERR("%s failed to convert to UTF-16 characters",
context);
GRN_FREE(utf16_string);
goto exit;
}
converted_string_size_ = WideCharToMultiByte(to_code_page,
0,
utf16_string,
n_utf16_chars,
NULL,
0,
NULL,
NULL);
if (converted_string_size_ == 0) {
SERR("%s failed to estimate required buffer size for converted string",
context);
GRN_FREE(utf16_string);
goto exit;
}
converted_string = GRN_MALLOCN(char, converted_string_size_ + 1);
converted_string_size_ = WideCharToMultiByte(to_code_page,
0,
utf16_string,
n_utf16_chars,
converted_string,
converted_string_size_,
NULL,
NULL);
GRN_FREE(utf16_string);
if (converted_string_size_ == 0) {
SERR("%s failed to estimate required buffer size for converted string",
context);
GRN_FREE(converted_string);
converted_string = NULL;
goto exit;
}
converted_string[converted_string_size_] = '\0';
if (converted_string_size) {
*converted_string_size = converted_string_size_;
}
}
exit :
if (!converted_string) {
converted_string = GRN_MALLOCN(char, from_string_size + 1);
if (converted_string) {
grn_memcpy(converted_string, from_string, from_string_size);
converted_string[from_string_size] = '\0';
if (converted_string_size) {
*converted_string_size = from_string_size;
}
} else {
ERR(ctx->rc,
"%s failed to allocate a buffer for converted string",
context);
if (converted_string_size) {
*converted_string_size = 0;
}
}
}
return converted_string;
}
const char *
grn_encoding_convert_to_locale(grn_ctx *ctx,
const char *grn_encoding_string,
ssize_t grn_encoding_string_size,
size_t *converted_string_size)
{
return grn_encoding_convert(ctx,
"[encoding][convert][grn->locale]",
grn_windows_encoding_to_code_page(ctx->encoding),
CP_ACP,
grn_encoding_string,
grn_encoding_string_size,
converted_string_size);
}
const char *
grn_encoding_convert_to_utf8(grn_ctx *ctx,
const char *grn_encoding_string,
ssize_t grn_encoding_string_size,
size_t *converted_string_size)
{
return grn_encoding_convert(ctx,
"[encoding][convert][grn->utf8]",
grn_windows_encoding_to_code_page(ctx->encoding),
CP_UTF8,
grn_encoding_string,
grn_encoding_string_size,
converted_string_size);
}
const char *
grn_encoding_convert_from_locale(grn_ctx *ctx,
const char *locale_string,
ssize_t locale_string_size,
size_t *converted_string_size)
{
return grn_encoding_convert(ctx,
"[encoding][convert][locale->grn]",
CP_ACP,
grn_windows_encoding_to_code_page(ctx->encoding),
locale_string,
locale_string_size,
converted_string_size);
}
const char *
grn_encoding_convert_from_utf8(grn_ctx *ctx,
const char *utf8_string,
ssize_t utf8_string_size,
size_t *converted_string_size)
{
return grn_encoding_convert(ctx,
"[encoding][convert][utf8->grn]",
CP_UTF8,
grn_windows_encoding_to_code_page(ctx->encoding),
utf8_string,
utf8_string_size,
converted_string_size);
}
const char *
grn_encoding_convert_to_utf8_from_locale(grn_ctx *ctx,
const char *locale_string,
ssize_t locale_string_size,
size_t *converted_string_size)
{
return grn_encoding_convert(ctx,
"[encoding][convert][locale->utf8]",
CP_ACP,
CP_UTF8,
locale_string,
locale_string_size,
converted_string_size);
}
const char *
grn_encoding_convert_to_locale_from_utf8(grn_ctx *ctx,
const char *utf8_string,
ssize_t utf8_string_size,
size_t *converted_string_size)
{
return grn_encoding_convert(ctx,
"[encoding][convert][utf8->locale]",
CP_UTF8,
CP_ACP,
utf8_string,
utf8_string_size,
converted_string_size);
}
void
grn_encoding_converted_free(grn_ctx *ctx, const char *converted_string)
{
GRN_FREE((char *)converted_string);
}
#else /* WIN32 */
const char *
grn_encoding_convert_to_locale(grn_ctx *ctx,
const char *grn_encoding_string,
ssize_t grn_encoding_string_size,
size_t *converted_string_size)
{
if (converted_string_size) {
if (grn_encoding_string_size < 0) {
*converted_string_size = strlen(grn_encoding_string);
} else {
*converted_string_size = (size_t)grn_encoding_string_size;
}
}
return grn_encoding_string;
}
const char *
grn_encoding_convert_to_utf8(grn_ctx *ctx,
const char *grn_encoding_string,
ssize_t grn_encoding_string_size,
size_t *converted_string_size)
{
if (converted_string_size) {
if (grn_encoding_string_size < 0) {
*converted_string_size = strlen(grn_encoding_string);
} else {
*converted_string_size = (size_t)grn_encoding_string_size;
}
}
return grn_encoding_string;
}
const char *
grn_encoding_convert_from_locale(grn_ctx *ctx,
const char *locale_string,
ssize_t locale_string_size,
size_t *converted_string_size)
{
if (converted_string_size) {
if (locale_string_size < 0) {
*converted_string_size = strlen(locale_string);
} else {
*converted_string_size = (size_t)locale_string_size;
}
}
return locale_string;
}
const char *
grn_encoding_convert_from_utf8(grn_ctx *ctx,
const char *utf8_string,
ssize_t utf8_string_size,
size_t *converted_string_size)
{
if (converted_string_size) {
if (utf8_string_size < 0) {
*converted_string_size = strlen(utf8_string);
} else {
*converted_string_size = (size_t)utf8_string_size;
}
}
return utf8_string;
}
const char *
grn_encoding_convert_to_utf8_from_locale(grn_ctx *ctx,
const char *locale_string,
ssize_t locale_string_size,
size_t *converted_string_size)
{
if (converted_string_size) {
if (locale_string_size < 0) {
*converted_string_size = strlen(locale_string);
} else {
*converted_string_size = (size_t)locale_string_size;
}
}
return locale_string;
}
const char *
grn_encoding_convert_to_locale_from_utf8(grn_ctx *ctx,
const char *utf8_string,
ssize_t utf8_string_size,
size_t *converted_string_size)
{
if (converted_string_size) {
if (utf8_string_size < 0) {
*converted_string_size = strlen(utf8_string);
} else {
*converted_string_size = (size_t)utf8_string_size;
}
}
return utf8_string;
}
void
grn_encoding_converted_free(grn_ctx *ctx, const char *converted_string)
{
}
#endif /* WIN32 */
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