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/*
* Compile and link this with all CLI programs where the main routine
* should get UTF-8 arguments on Windows. In those programs, include the
* cli_main.h header to rename main to real_main on Windows.
*
* This is used in software licensed under the GPLv2, and its license MUST
* be compatible with that license.
*
* This is used in software licensed under the Apache 2.0 license, and its
* license MUST be compatible with that license.
*
* For that purpose, we use the MIT (X11) license.
*
* SPDX-License-Identifier: MIT
*/
#include "cli_main.h"
#ifdef _WIN32
#include <stdlib.h>
#include <stdio.h>
#include <glib.h>
#include <windows.h>
int
wmain(int argc, wchar_t *wc_argv[])
{
/* ISO C mandates that argv contents can be modified, so use a
* GPtrArray to keep a private reference to the allocated memory so
* we do not hand over our only reference and potentially lose it,
* or worse try to free an invalidated pointer. */
GPtrArray *argv;
char **argv_user;
int return_code;
argv = g_ptr_array_new_full(argc, g_free);
for (int i = 0; i < argc; i++) {
/*
* XXX = use WC_ERR_INVALID_CHARS rather than 0, and fail if
* the argument isn't valid UTF-16?
*/
int width;
char *utf8_string;
width = WideCharToMultiByte(CP_UTF8, 0, wc_argv[i], -1, NULL, 0,
NULL, NULL);
if (width == 0) {
fprintf(stderr, "WideCharToMultiByte failed: %d\n",
width);
return 2;
}
utf8_string = g_malloc(width);
if (WideCharToMultiByte(CP_UTF8, 0, wc_argv[i], -1, utf8_string,
width, NULL, NULL) == 0) {
fprintf(stderr, "WideCharToMultiByte failed: %d\n",
width);
return 2;
}
g_ptr_array_add(argv, utf8_string);
}
argv_user = (char **)g_malloc((argc + 1) * sizeof(char *));
for (guint i = 0; i < argv->len; i++) {
argv_user[i] = argv->pdata[i];
}
argv_user[argc] = NULL;
/*
* The original "main" routine was renamed to "real_main" via a macro in
* the cli_main.h header file since either "main" or "wmain" can be
* defined on Windows, but not both.
*/
return_code = real_main(argc, argv_user);
/* Clean up */
g_ptr_array_unref(argv);
g_free(argv_user);
return return_code;
}
#endif
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