ref: 45359954fe5054f27637962a272177d9c8115b90
dir: /setup/execute.c/
// Emacs style mode select -*- C++ -*- //----------------------------------------------------------------------------- // // Copyright(C) 2006 Simon Howard // // 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. // // Code for invoking Doom #include <stdarg.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <sys/types.h> #ifndef _WIN32 #include <sys/wait.h> #include <unistd.h> #else #include <process.h> #endif #include "textscreen.h" #include "config.h" #include "configfile.h" #include "execute.h" #include "m_argv.h" #ifdef _WIN32 #define DOOM_BINARY PACKAGE_TARNAME ".exe" #else #define DOOM_BINARY INSTALL_DIR "/" PACKAGE_TARNAME #endif #ifdef _WIN32 #define DIR_SEPARATOR '\\' #define PATH_SEPARATOR ';' #else #define DIR_SEPARATOR '/' #define PATH_SEPARATOR ':' #endif struct execute_context_s { char *response_file; FILE *stream; }; // Returns the path to a temporary file of the given name, stored // inside the system temporary directory. static char *TempFile(char *s) { char *result; char *tempdir; #ifdef _WIN32 // Check the TEMP environment variable to find the location. tempdir = getenv("TEMP"); if (tempdir == NULL) { tempdir = "."; } #else // In Unix, just use /tmp. tempdir = "/tmp"; #endif result = malloc(strlen(tempdir) + strlen(s) + 2); sprintf(result, "%s%c%s", tempdir, DIR_SEPARATOR, s); return result; } execute_context_t *NewExecuteContext(void) { execute_context_t *result; result = malloc(sizeof(execute_context_t)); result->response_file = TempFile("chocolat.rsp"); result->stream = fopen(result->response_file, "w"); if (result->stream == NULL) { fprintf(stderr, "Error opening response file\n"); exit(-1); } return result; } void AddConfigParameters(execute_context_t *context) { int p; p = M_CheckParm("-config"); if (p > 0) { AddCmdLineParameter(context, "-config \"%s\"", myargv[p + 1]); } p = M_CheckParm("-extraconfig"); if (p > 0) { AddCmdLineParameter(context, "-extraconfig \"%s\"", myargv[p + 1]); } } void AddCmdLineParameter(execute_context_t *context, char *s, ...) { va_list args; va_start(args, s); vfprintf(context->stream, s, args); fprintf(context->stream, "\n"); } #ifdef _WIN32 static int ExecuteCommand(const char **argv) { return _spawnv(_P_WAIT, argv[0], argv); } #else static int ExecuteCommand(const char **argv) { pid_t childpid; int result; childpid = fork(); if (childpid == 0) { // This is the child. Execute the command. execv(argv[0], (char **) argv); exit(-1); } else { // This is the parent. Wait for the child to finish, and return // the status code. waitpid(childpid, &result, 0); if (WIFEXITED(result)) { return WEXITSTATUS(result); } else { return -1; } } } #endif int ExecuteDoom(execute_context_t *context) { const char *argv[3]; char *response_file_arg; int result; fclose(context->stream); // Build the command line response_file_arg = malloc(strlen(context->response_file) + 2); sprintf(response_file_arg, "@%s", context->response_file); argv[0] = DOOM_BINARY; argv[1] = response_file_arg; argv[2] = NULL; // Run Doom result = ExecuteCommand(argv); free(response_file_arg); // Destroy context remove(context->response_file); free(context->response_file); free(context); return result; } static void TestCallback(TXT_UNCAST_ARG(widget), TXT_UNCAST_ARG(data)) { execute_context_t *exec; char *main_cfg; char *extra_cfg; txt_window_t *testwindow; txt_label_t *label; testwindow = TXT_NewWindow("Starting Doom"); label = TXT_NewLabel("Starting Doom to test the\n" "settings. Please wait."); TXT_SetWidgetAlign(label, TXT_HORIZ_CENTER); TXT_AddWidget(testwindow, label); TXT_DrawDesktop(); // Save temporary configuration files with the current configuration main_cfg = TempFile("tmp.cfg"); extra_cfg = TempFile("extratmp.cfg"); M_SaveMainDefaults(main_cfg); M_SaveExtraDefaults(extra_cfg); // Run with the -testcontrols parameter exec = NewExecuteContext(); AddCmdLineParameter(exec, "-testcontrols"); AddCmdLineParameter(exec, "-config %s", main_cfg); AddCmdLineParameter(exec, "-extraconfig %s", extra_cfg); ExecuteDoom(exec); TXT_CloseWindow(testwindow); // Delete the temporary config files remove(main_cfg); remove(extra_cfg); free(main_cfg); free(extra_cfg); } txt_window_action_t *TestConfigAction(void) { txt_window_action_t *test_action; test_action = TXT_NewWindowAction('t', "Test"); TXT_SignalConnect(test_action, "pressed", TestCallback, NULL); return test_action; } // Invokes Doom to find which IWADs are installed. // This is a cheap hack to avoid duplication of the complicated install // path searching code inside Doom. int FindInstalledIWADs(void) { execute_context_t *context; int result; context = NewExecuteContext(); AddCmdLineParameter(context, "-findiwads"); result = ExecuteDoom(context); if (result < 0) { return 0; } else { return result; } }