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/*
* Copyright (C) the libgit2 contributors. All rights reserved.
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#include "w32_buffer.h"
#include "../buffer.h"
#include "utf-conv.h"
GIT_INLINE(int) handle_wc_error(void)
{
if (GetLastError() == ERROR_INSUFFICIENT_BUFFER)
errno = ENAMETOOLONG;
else
errno = EINVAL;
return -1;
}
int git_buf_put_w(git_buf *buf, const wchar_t *string_w, size_t len_w)
{
int utf8_len, utf8_write_len;
size_t new_size;
if (!len_w) {
return 0;
} else if (len_w > INT_MAX) {
git_error_set_oom();
return -1;
}
GIT_ASSERT(string_w);
/* Measure the string necessary for conversion */
if ((utf8_len = WideCharToMultiByte(CP_UTF8, WC_ERR_INVALID_CHARS, string_w, (int)len_w, NULL, 0, NULL, NULL)) == 0)
return 0;
GIT_ASSERT(utf8_len > 0);
GIT_ERROR_CHECK_ALLOC_ADD(&new_size, buf->size, (size_t)utf8_len);
GIT_ERROR_CHECK_ALLOC_ADD(&new_size, new_size, 1);
if (git_buf_grow(buf, new_size) < 0)
return -1;
if ((utf8_write_len = WideCharToMultiByte(
CP_UTF8, WC_ERR_INVALID_CHARS, string_w, (int)len_w, &buf->ptr[buf->size], utf8_len, NULL, NULL)) == 0)
return handle_wc_error();
GIT_ASSERT(utf8_write_len == utf8_len);
buf->size += utf8_write_len;
buf->ptr[buf->size] = '\0';
return 0;
}
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