diff options
Diffstat (limited to 'icon/windows-stub.c')
| -rw-r--r-- | icon/windows-stub.c | 203 |
1 files changed, 201 insertions, 2 deletions
diff --git a/icon/windows-stub.c b/icon/windows-stub.c index 8df3e0aa..e075a02d 100644 --- a/icon/windows-stub.c +++ b/icon/windows-stub.c @@ -1,2 +1,201 @@ -__stdcall -WinMain(int a, int b, int c, int d) { return 0; } +/* + * 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; version 2 of the License. + * + * 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); +} |