/*

** 2025-12-26

**

** The author disclaims copyright to this source code. In place of

** a legal notice, here is a blessing:

**

** May you do good and not evil.

** May you find forgiveness for yourself and forgive others.

** May you share freely, never taking more than you give.

**

*************************************************************************

**

** This file implements a substitute process entry point for windows

** that correctly interprets command-line arguments as UTF-8. This is

** a work-around for the (unfixed) Windows bug known as "WorstFit" and

** described at:

**

** * https://news.ycombinator.com/item?id=42647101

**

** USAGE:

**

** If you have a command-line program coded to C-language standard in which

** the entry point is:

**

** int main(int argc, char **argv){...}

**

** That does not work on Windows if there are non-ASCII characters on the

** command line. Programs are expected to use an alternative entry point:

**

** int wmain(int wargc, wchar_t **wargv){...}

**

** This file implements _wmain() but then converts all of the wargv elements

** to UTF-8 and passes them off to utf8_main().

**

** So, a command-line tool that implements the standard entry point can be

** modified by adding the following lines just prior to main():

**

** #ifdef _WIN32

** #define main utf8_main

** #endif

**

** Then, include this file in the list of files that implement the program,

** and the program will work correctly, even on Windows.

*/

#include <windows.h>

#include <stdio.h>

extern int utf8_main(int,char**);

int wmain(int argc, wchar_t **wargv){

int rc, i;

char **argv = malloc( sizeof(char*) * (argc+1) );

char **orig = argv;

if( argv==0 ){

fprintf(stderr, "malloc failed\n");

exit(1);

}

for(i=0; i<argc; i++){

int nByte = WideCharToMultiByte(CP_UTF8, 0, wargv[i], -1, 0, 0, 0, 0);

if( nByte==0 ){

argv[i] = 0;

}else{

argv[i] = malloc( nByte );

if( argv[i]==0 ){

fprintf(stderr, "malloc failed\n");

exit(1);

}

nByte = WideCharToMultiByte(CP_UTF8, 0, wargv[i], -1, argv[i],nByte,0,0);

if( nByte==0 ){

free(argv[i]);

argv[i] = 0;

}

}

}

argv[argc] = 0;

rc = utf8_main(argc, argv);

for(i=0; i<argc; i++) free(orig[i]);

free(argv);

return rc;

}