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/*
* Copyright © 2015 Keith Packard <keithp@keithp.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
/* A windows stub program to launch a java program with suitable parameters
*
* Given that the name of this exe is altusmetrum-foo.exe living in directory bar, and
* that it was run with 'args' extra command line parameters, run:
*
* javaw.exe -Djava.library.path="bar" -jar "bar/foo-fat.jar" args
*/
#define _UNICODE
#define UNICODE
#include <stdlib.h>
#include <windows.h>
#include <setupapi.h>
#include <stdio.h>
#include <stdarg.h>
#include <shlwapi.h>
/* Concatenate a list of strings together
*/
static LPTSTR
wcsbuild(LPTSTR first, ...)
{
va_list args;
int len;
LPTSTR buf;
LPTSTR arg;
buf = wcsdup(first);
va_start(args, first);
while ((arg = va_arg(args, LPTSTR)) != NULL) {
len = wcslen(buf) + wcslen(arg) + 1;
buf = realloc(buf, len * sizeof (wchar_t));
wcscat(buf, arg);
}
va_end(args);
return buf;
}
/* Quote a single string, taking care to escape embedded quote and
* backslashes within
*/
static LPTSTR
quote_arg(LPTSTR arg)
{
LPTSTR result;
LPTSTR in, out;
int out_len = 3; /* quotes and terminating null */
/* Find quote and backslashes */
for (in = arg; *in; in++) {
switch (*in) {
case '"':
case '\\':
out_len += 2;
break;
default:
out_len++;
break;
}
}
result = malloc ((out_len + 1) * sizeof (wchar_t));
out = result;
*out++ = '"';
for (in = arg; *in; in++) {
switch (*in) {
case '"':
case '\\':
*out++ = '\\';
break;
}
*out++ = *in;
}
*out++ = '"';
*out++ = '\0';
return result;
}
/* Construct a single string from a list of arguments
*/
static LPTSTR
quote_args(LPTSTR *argv, int argc)
{
LPTSTR result = NULL, arg;
int i;
result = malloc(1 * sizeof (wchar_t));
result[0] = '\0';
for (i = 0; i < argc; i++) {
arg = quote_arg(argv[i]);
result = realloc(result, (wcslen(result) + 1 + wcslen(arg) + 1) * sizeof (wchar_t));
wcscat(result, L" ");
wcscat(result, arg);
free(arg);
}
return result;
}
/* Return the directory portion of the provided file
*/
static LPTSTR
get_dir(LPTSTR file)
{
DWORD len = GetFullPathName(file, 0, NULL, NULL);
LPTSTR full = malloc (len * sizeof (wchar_t));
GetFullPathName(file, len, full, NULL);
PathRemoveFileSpec(full);
return full;
}
/* Convert a .exe name into a -fat.jar name, starting
* by computing the complete path name of the source filename
*/
static LPTSTR
make_jar(LPTSTR file)
{
DWORD len = GetFullPathName(file, 0, NULL, NULL);
LPTSTR full = malloc (len * sizeof (wchar_t));
LPTSTR base_part;
LPTSTR jar;
LPTSTR dot;
GetFullPathName(file, len, full, &base_part);
static const wchar_t head[] = L"altusmetrum-";
if (wcsncmp(base_part, head, wcslen(head)) == 0)
base_part += wcslen(head);
dot = wcsrchr(base_part, '.');
if (dot)
*dot = '\0';
jar = wcsdup(base_part);
PathRemoveFileSpec(full);
return wcsbuild(full, L"\\", jar, L"-fat.jar", NULL);
}
/* Build the complete command line from the pieces
*/
static LPTSTR
make_cmd(LPTSTR dir, LPTSTR jar, LPTSTR quote_args)
{
LPTSTR quote_dir = quote_arg(dir);
LPTSTR quote_jar = quote_arg(jar);
LPTSTR cmd;
cmd = wcsbuild(L"javaw.exe -Djava.library.path=", quote_dir, L" -jar ", quote_jar, quote_args, NULL);
free(quote_jar);
free(jar);
free(quote_dir);
return cmd;
}
int WINAPI
WinMain(HINSTANCE instance, HINSTANCE prev_instance, LPSTR cmd_line_a, int cmd_show)
{
STARTUPINFO startup_info;
PROCESS_INFORMATION process_information;
BOOL result;
wchar_t *command_line;
int argc;
LPTSTR *argv = CommandLineToArgvW(GetCommandLine(), &argc);
LPTSTR my_dir;
LPTSTR my_jar;
LPTSTR args = quote_args(argv + 1, argc - 1);
my_dir = get_dir(argv[0]);
my_jar = make_jar(argv[0]);
command_line = make_cmd(my_dir, my_jar, args);
memset(&startup_info, '\0', sizeof startup_info);
startup_info.cb = sizeof startup_info;
result = CreateProcess(NULL,
command_line,
NULL,
NULL,
FALSE,
CREATE_NO_WINDOW,
NULL,
NULL,
&startup_info,
&process_information);
if (result) {
CloseHandle(process_information.hProcess);
CloseHandle(process_information.hThread);
}
exit(0);
}
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