ref: 0e86f377a3cd528ed8cbbf403516f79ee5dffbac
dir: /pkg/osx/LauncherManager.m/
//
// Copyright(C) 2005-2014 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.
//
#include <AppKit/AppKit.h>
#include "Execute.h"
#include "LauncherManager.h"
#include "config.h"
@implementation LauncherManager
// Save configuration.  Invoked when we launch the game or quit.
- (void) saveConfig
{
    NSUserDefaults *defaults;
    // Save IWAD configuration and selected IWAD.
    [self->iwadController saveConfig];
    // Save command line arguments.
    defaults = [NSUserDefaults standardUserDefaults];
    [defaults setObject:[self->commandLineArguments stringValue]
              forKey:@"command_line_args"];
}
// Load configuration, invoked on startup.
- (void) setConfig
{
    NSUserDefaults *defaults;
    NSString *args;
    defaults = [NSUserDefaults standardUserDefaults];
    args = [defaults stringForKey:@"command_line_args"];
    if (args != nil)
    {
        [self->commandLineArguments setStringValue:args];
    }
}
// Get the next command line argument from the command line.
// The position counter used to iterate over arguments is in 'pos'.
// The index of the argument that was found is saved in arg_pos.
static NSString *GetNextArgument(NSString *commandLine, int *pos, int *arg_pos)
{
    NSRange arg_range;
    // Skip past any whitespace
    while (*pos < [commandLine length]
        && isspace([commandLine characterAtIndex: *pos]))
    {
        ++*pos;
    }
    if (*pos >= [commandLine length])
    {
        *arg_pos = *pos;
        return nil;
    }
    // We are at the start of the argument.  This may be a quoted
    // string argument, or a "normal" one.
    if ([commandLine characterAtIndex: *pos] == '\"')
    {
        // Quoted string, skip past first quote
        ++*pos;
        // Save start position:
        *arg_pos = *pos;
        while (*pos < [commandLine length]
            && [commandLine characterAtIndex: *pos] != '\"')
        {
            ++*pos;
        }
        // Unexpected end of string?
        if (*pos >= [commandLine length])
        {
            return nil;
        }
        arg_range = NSMakeRange(*arg_pos, *pos - *arg_pos);
        // Skip past last quote
        ++*pos;
    }
    else
    {
        // Normal argument
        // Save position:
        *arg_pos = *pos;
        // Read until end:
        while (*pos < [commandLine length]
            && !isspace([commandLine characterAtIndex: *pos]))
        {
            ++*pos;
        }
        arg_range = NSMakeRange(*arg_pos, *pos - *arg_pos);
    }
    return [commandLine substringWithRange: arg_range];
}
// Given the specified command line argument, find the index
// to insert the new file within the command line.  Returns -1 if the 
// argument is not already within the arguments string.
static int GetFileInsertIndex(NSString *commandLine, NSString *needle)
{
    NSString *arg;
    int arg_pos;
    int pos;
    pos = 0;
    // Find the command line parameter we are searching
    // for (-merge, -deh, etc)
    for (;;)
    {
        arg = GetNextArgument(commandLine, &pos, &arg_pos);
        // Searched to end of string and never found?
        if (arg == nil)
        {
            return -1;
        }
        if (![arg caseInsensitiveCompare: needle])
        {
            break;
        }
    }
    // Now skip over existing files.  For example, if we
    // have -file foo.wad bar.wad, the new file should be appended
    // to the end of the list.
    for (;;)
    {
        arg = GetNextArgument(commandLine, &pos, &arg_pos);
        // If we search to the end of the string now, it is fine;
        // the new string should be added to the end of the command
        // line.  Otherwise, if we find an argument that begins
        // with '-', it is a new command line parameter and the end
        // of the list.
        if (arg == nil || [arg characterAtIndex: 0] == '-')
        {
            break;
        }
    }
    // arg_pos should now contain the offset to insert the new filename.
    return arg_pos;
}
// Given the specified string, append a filename, quoted if necessary.
static NSString *AppendQuotedFilename(NSString *str, NSString *fileName)
{
    int i;
    // Search the filename for spaces, and quote if necessary.
    for (i=0; i<[fileName length]; ++i)
    {
        if (isspace([fileName characterAtIndex: i]))
        {
            str = [str stringByAppendingString: @" \""];
            str = [str stringByAppendingString: fileName];
            str = [str stringByAppendingString: @"\" "];
            return str;
        }
    }
    str = [str stringByAppendingString: @" "];
    str = [str stringByAppendingString: fileName];
    return str;
}
// Clear out the existing command line options.
// Invoked before the first file is added.
- (void) clearCommandLine
{
    [self->commandLineArguments setStringValue: @""];
}
// Add a file to the command line to load with the game.
- (void) addFileToCommandLine: (NSString *) fileName
         forArgument: (NSString *) arg
{
    NSString *commandLine;
    int insert_pos;
    // Get the current command line
    commandLine = [self->commandLineArguments stringValue];
    // Find the location to insert the new filename:
    insert_pos = GetFileInsertIndex(commandLine, arg);
    // If position < 0, we should add the new argument and filename
    // to the end.  Otherwise, append the new filename to the existing
    // list of files.
    if (insert_pos < 0)
    {
        commandLine = [commandLine stringByAppendingString: @" "];
        commandLine = [commandLine stringByAppendingString: arg];
        commandLine = AppendQuotedFilename(commandLine, fileName);
    }
    else
    {
        NSString *start;
        NSString *end;
        // Divide existing command line in half:
        start = [commandLine substringToIndex: insert_pos];
        end = [commandLine substringFromIndex: insert_pos];
        // Construct new command line:
        commandLine = AppendQuotedFilename(start, fileName);
        commandLine = [commandLine stringByAppendingString: @" "];
        commandLine = [commandLine stringByAppendingString: end];
    }
    [self->commandLineArguments setStringValue: commandLine];
}
- (void) launch: (id)sender
{
    NSString *iwad;
    NSString *args;
    char *executable_name;
    const char *game_name;
    [self saveConfig];
    iwad = [self->iwadController getIWADLocation];
    args = [self->commandLineArguments stringValue];
    if (iwad == nil)
    {
        NSRunAlertPanel(@"No IWAD selected",
                        @"You have not selected an IWAD (game) file.\n\n"
                         "You must configure and select a valid IWAD file "
                         "in order to launch the game.",
                        @"OK", nil, nil);
        return;
    }
    game_name = [self->iwadController getGameName];
    asprintf(&executable_name, "%s%s", PROGRAM_PREFIX, game_name);
    ExecuteProgram(executable_name, [iwad UTF8String],
                                    [args UTF8String]);
    [NSApp terminate:sender];
}
// Invoked when the "Setup Tool" button is clicked, to run the setup tool:
- (void) runSetup: (id)sender
{
    const char *game_name;
    char *arg;
    [self saveConfig];
    [self->iwadController setEnvironment];
    // Provide the -game command line parameter to select the game
    // to configure, based on the game selected in the dropdown.
    game_name = [self->iwadController getGameName];
    asprintf(&arg, "-game %s", game_name);
    ExecuteProgram(PROGRAM_PREFIX "setup", NULL, arg);
    free(arg);
}
// Invoked when the "Terminal" option is selected from the menu, to open
// a terminal window.
- (void) openTerminal: (id) sender
{
    char *doomwadpath;
    [self saveConfig];
    doomwadpath = [self->iwadController doomWadPath];
    OpenTerminalWindow(doomwadpath);
    free(doomwadpath);
}
- (void) openREADME: (id) sender
{
    OpenDocumentation("README");
}
- (void) openINSTALL: (id) sender
{
    OpenDocumentation("INSTALL");
}
- (void) openCMDLINE: (id) sender
{
    const char *game_name;
    char filename[32];
    // We need to open the appropriate doc file for the currently
    // selected game.
    game_name = [self->iwadController getGameName];
    snprintf(filename, sizeof(filename), "CMDLINE-%s", game_name);
    OpenDocumentation(filename);
}
- (void) openCOPYING: (id) sender
{
    OpenDocumentation("COPYING");
}
- (void) openDocumentation: (id) sender
{
    OpenDocumentation("");
}
- (void) awakeFromNib
{
    [self->launcherWindow setTitle: @PACKAGE_NAME " Launcher"];
    [self->launcherWindow center];
    [self->launcherWindow setDefaultButtonCell: [self->launchButton cell]];
    [self setConfig];
}
- (BOOL) addIWADPath: (NSString *) path
{
    return [self->iwadController addIWADPath: path];
}
- (BOOL) selectGameByName: (const char *) name
{
    return [self->iwadController selectGameByName: name];
}
@end