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/* ... */
//-----------------------------------------------------------------------------
//
// Copyright(C) 2009 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.
//
//-----------------------------------------------------------------------------
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <AppKit/AppKit.h>
#include "config.h"
#define RESPONSE_FILE "/tmp/launcher.rsp"
#define TEMP_SCRIPT "/tmp/tempscript.sh"
static char *executable_path;
// Called on startup to save the location of the launcher program
// (within a package, other executables should be in the same directory)
void SetProgramLocation(const char *path)
{
char *p;
executable_path = strdup(path);
p = strrchr(executable_path, '/');
*p = '\0';
}
// Write out the response file containing command line arguments.
static void WriteResponseFile(const char *iwad, const char *args)
{
FILE *fstream;
fstream = fopen(RESPONSE_FILE, "w");
if (iwad != NULL)
{
fprintf(fstream, "-iwad \"%s\"", iwad);
}
if (args != NULL)
{
fprintf(fstream, "%s", args);
}
fclose(fstream);
}
static void DoExec(const char *executable, const char *iwad, const char *args)
{
char *argv[3];
argv[0] = malloc(strlen(executable_path) + strlen(executable) + 3);
sprintf(argv[0], "%s/%s", executable_path, executable);
if (iwad != NULL || args != NULL)
{
WriteResponseFile(iwad, args);
argv[1] = "@" RESPONSE_FILE;
argv[2] = NULL;
}
else
{
argv[1] = NULL;
}
execv(argv[0], argv);
exit(-1);
}
// Execute the specified executable contained in the same directory
// as the launcher, with the specified arguments.
void ExecuteProgram(const char *executable, const char *iwad, const char *args)
{
pid_t childpid;
char *homedir;
childpid = fork();
if (childpid == 0)
{
signal(SIGCHLD, SIG_DFL);
// Change directory to home dir before launch, so that any demos
// are saved somewhere sensible.
homedir = getenv("HOME");
if (homedir != NULL)
{
chdir(homedir);
}
DoExec(executable, iwad, args);
}
else
{
signal(SIGCHLD, SIG_IGN);
}
}
// Write a sequence of commands that will display the specified message
// via shell commands.
static void WriteMessage(FILE *script, char *msg)
{
char *p;
fprintf(script, "echo \"");
for (p=msg; *p != '\0'; ++p)
{
// Start new line?
if (*p == '\n')
{
fprintf(script, "\"\necho \"");
continue;
}
// Escaped character?
if (*p == '\\' || *p == '\"')
{
fprintf(script, "\\");
}
fprintf(script, "%c", *p);
}
fprintf(script, "\"\n");
}
// Open a terminal window with the PATH set appropriately, and DOOMWADPATH
// set to the specified value.
void OpenTerminalWindow(const char *doomwadpath)
{
FILE *stream;
// Generate a shell script that sets the PATH to include the location
// where the Doom binaries are, and DOOMWADPATH to include the
// IWAD files that have been configured in the launcher interface.
// The script then deletes itself and starts a shell.
stream = fopen(TEMP_SCRIPT, "w");
fprintf(stream, "#!/bin/sh\n");
//fprintf(stream, "set -x\n");
fprintf(stream, "PATH=\"%s:$PATH\"\n", executable_path);
fprintf(stream, "MANPATH=\"%s/man:$(manpath)\"\n", executable_path);
fprintf(stream, "export MANPATH\n");
fprintf(stream, "DOOMWADPATH=\"%s\"\n", doomwadpath);
fprintf(stream, "export DOOMWADPATH\n");
fprintf(stream, "rm -f \"%s\"\n", TEMP_SCRIPT);
// Display a useful message:
fprintf(stream, "clear\n");
WriteMessage(stream,
"\n"
"This command line has the PATH variable configured so that you may\n"
"launch the game with whatever parameters you desire.\n"
"\n"
"For example:\n"
"\n"
" " PACKAGE_TARNAME " -iwad doom2.wad -file sid.wad -warp 1\n"
"\n"
"Type 'exit' to exit.\n");
fprintf(stream, "exec $SHELL\n");
fprintf(stream, "\n");
fclose(stream);
chmod(TEMP_SCRIPT, 0755);
// Tell the terminal to open a window to run the script.
[[NSWorkspace sharedWorkspace] openFile: @TEMP_SCRIPT
withApplication: @"Terminal"];
}
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