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/*
* ux_init.c - Unix interface, initialisation
* Galen Hazelwood <galenh@micron.net>
* David Griffith <dgriffi@cs.csubak.edu>
*
* This file is part of Frotz.
*
* Frotz 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.
*
* Frotz 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
*/
#define __UNIX_PORT_FILE
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include <ctype.h>
#include <errno.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <fcntl.h>
#include "getopt.h"
/* We will use our own private getopt functions. */
#ifdef USE_NCURSES_H
#include <ncurses.h>
#else
#include <curses.h>
#endif
#include <termios.h>
#include "frotz.h"
#include "ux_frotz.h"
#define INFORMATION "\
\n\
FROTZ V2.40 - An interpreter for all Infocom and other Z-Machine games.\n\
Complies with standard 1.0 of Graham Nelson's specification.\n\
\n\
Syntax: frotz [options] story-file\n\
\n\
-a watch attribute setting \t -p plain ASCII output only\n\
-A watch attribute testing \t -P alter piracy opcode\n\
-b # background color \t -r # right margin\n\
-c # context lines \t -q quiet (disable sound effects\n\
-d disable color \t -Q use old-style save format\n\
-e enable sound \t -s # random number seed value\n\
-f # foreground colour \t -S # transcript width\n\
-F force color mode \t -t set Tandy bit\n\
-h # screen height \t -u # slots for multiple undo\n\
-l # left margin \t -w # screen width\n\
-o watch object movement \t -x expand abbreviations g/x/z\n\
-O watch object locating"
static int user_disable_color = 0;
static int user_force_color = 0;
static int user_foreground_color = -1;
static int user_background_color = -1;
static int user_screen_width = -1;
static int user_screen_height = -1;
static int user_random_seed = -1;
static int user_tandy_bit = 0;
static int curses_active = 0; /* true if os_init_screen has been run */
int current_text_style = 0; /* Since I can't use attr_get, which
would make things easier, I need to
use the same hack the MS-DOS port
does...keep the current style in a
global variable. */
char unix_plain_ascii = 0; /* true if user wants to disable latin-1 */
char stripped_story_name[FILENAME_MAX+1];
char semi_stripped_story_name[FILENAME_MAX+1];
/*
* os_fatal
*
* Display error message and exit program.
*
*/
void os_fatal (const char *s)
{
if (curses_active) {
/* Solaris 2.6's cc complains if the below cast is missing */
os_display_string((zchar *)"\n\n");
beep();
os_set_text_style(BOLDFACE_STYLE);
os_display_string((zchar *)"Fatal error: ");
os_set_text_style(0);
os_display_string((zchar *)s);
os_display_string((zchar *)"\n");
os_reset_screen();
exit(1);
}
fputs ("\nFatal error: ", stderr);
fputs (s, stderr);
fputs ("\n\n", stderr);
exit (1);
}/* os_fatal */
extern char script_name[];
extern char command_name[];
extern char save_name[];
extern char auxilary_name[];
/*
* os_process_arguments
*
* Handle command line switches. Some variables may be set to activate
* special features of Frotz:
*
* option_attribute_assignment
* option_attribute_testing
* option_context_lines
* option_object_locating
* option_object_movement
* option_left_margin
* option_right_margin
* option_ignore_errors
* option_piracy
* option_undo_slots
* option_expand_abbreviations
* option_script_cols
*
* The global pointer "story_name" is set to the story file name.
*
*
*/
void os_process_arguments (int argc, char *argv[])
{
int c, i;
const char *p = NULL;
char *home;
char configfile[FILENAME_MAX + 1];
if ((getuid() == 0) || (geteuid() == 0)) {
printf("I won't run as root!\n");
exit(1);
}
if ((home = getenv("HOME")) == NULL) {
printf("Hard drive on fire!\n");
exit(1);
}
/*
* It doesn't look like Frotz can reliably be resized given its current
* screen-handling code. While playing with Nitfol, I noticed that it
* resized itself fairly reliably, even though the terminal looked rather
* ugly to begin with. Since Nitfol uses the Glk library for screen I/O,
* I think there might be something in Glk that can make resizing easier.
* Something to think about for later.
*
*/
/*
if (signal(SIGWINCH, SIG_IGN) != SIG_IGN)
signal(SIGWINCH, sig_winch_handler);
*/
/* First check for a "$HOME/.frotzrc". */
/* If not found, look for CONFIG_DIR/frotz.conf */
/* $HOME/.frotzrc overrides CONFIG_DIR/frotz.conf */
if (home) {
strncpy(configfile, home, FILENAME_MAX);
strncat(configfile, "/", 1);
} else
configfile[0] = '\0';
strncat(configfile, USER_CONFIG, strlen(USER_CONFIG));
if (!getconfig(configfile)) {
strncpy(configfile, CONFIG_DIR, FILENAME_MAX);
strncat(configfile, "/", 1); /* added by DJP */
strncat(configfile, MASTER_CONFIG, FILENAME_MAX-10);
getconfig(configfile); /* we're not concerned if this fails */
}
/* Parse the options */
do {
c = getopt(argc, argv, "aAb:c:def:Fh:il:oOpPQqr:s:S:tu:w:xZ:");
switch(c) {
case 'a': option_attribute_assignment = 1; break;
case 'A': option_attribute_testing = 1; break;
case 'b': user_background_color = atoi(optarg);
if ((user_background_color < 2) ||
(user_background_color > 9))
user_background_color = -1;
break;
case 'c': option_context_lines = atoi(optarg); break;
case 'd': user_disable_color = 1; break;
case 'e': option_sound = 1; break;
case 'f': user_foreground_color = atoi(optarg);
if ((user_foreground_color < 2) ||
(user_foreground_color > 9))
user_foreground_color = -1;
break;
case 'F': user_force_color = 1;
user_disable_color = 0;
break;
case 'h': user_screen_height = atoi(optarg); break;
/* case 'i': option_ignore_errors = 1; break; */
case 'l': option_left_margin = atoi(optarg); break;
case 'o': option_object_movement = 1; break;
case 'O': option_object_locating = 1; break;
case 'p': unix_plain_ascii = 1; break;
case 'P': option_piracy = 1; break;
case 'q': option_sound = 0; break;
case 'Q': option_save_quetzal = 0; break;
case 'r': option_right_margin = atoi(optarg); break;
case 's': user_random_seed = atoi(optarg); break;
case 'S': option_script_cols = atoi(optarg); break;
case 't': user_tandy_bit = 1; break;
case 'u': option_undo_slots = atoi(optarg); break;
case 'w': user_screen_width = atoi(optarg); break;
case 'x': option_expand_abbreviations = 1; break;
case 'Z': err_report_mode = atoi(optarg);
if ((err_report_mode < ERR_REPORT_NEVER) ||
(err_report_mode > ERR_REPORT_FATAL))
err_report_mode = ERR_DEFAULT_REPORT_MODE;
break;
}
} while (c != EOF);
if (optind != argc - 1) {
puts (INFORMATION);
printf ("\t-Z # error checking mode (default = %d)\n"
"\t %d = don't report errors %d = report first error\n"
"\t %d = report all errors %d = exit after any error\n\n",
ERR_DEFAULT_REPORT_MODE, ERR_REPORT_NEVER,
ERR_REPORT_ONCE, ERR_REPORT_ALWAYS,
ERR_REPORT_FATAL);
exit (1);
}
/* This section is exceedingly messy and really can't be fixed
without major changes all over the place.
*/
/* Save the story file name */
story_name = malloc(FILENAME_MAX + 1);
strcpy(story_name, argv[optind]);
/* Strip path off the story file name */
p = (char *)story_name;
for (i = 0; story_name[i] != 0; i++)
if (story_name[i] == '/')
p = (char *)story_name + i + 1;
for (i = 0; p[i] != '\0'; i++)
semi_stripped_story_name[i] = p[i];
semi_stripped_story_name[i] = '\0';
for (i = 0; p[i] != '\0' && p[i] != '.'; i++)
stripped_story_name[i] = p[i];
stripped_story_name[i] = '\0';
/*
* If possible, saved games go in "$HOME/.infocom/" with extension
* ".sav" (for quetzal save files) or ".frotz" (for old Frotz
* save files). If $HOME is not set, use the current directory.
*/
save_name[0] = 0;
if (home) {
struct stat buf;
strcpy (save_name, home);
strcat (save_name, "/.infocom");
if (stat (save_name, &buf)) {
if (errno == ENOENT) {
if (mkdir (save_name, 0777)) {
/* error; use cwd */
save_name[0] = 0;
} else {
strcat (save_name, "/");
}
} else {
save_name[0] = 0;
}
} else {
if (S_ISDIR(buf.st_mode)) {
strcat (save_name, "/");
} else {
save_name[0] = 0;
}
}
}
/* Create nice default file names */
strcpy (script_name, stripped_story_name);
strcpy (command_name, stripped_story_name);
strcat (save_name, stripped_story_name);
strcpy (auxilary_name, stripped_story_name);
/* Don't forget the extensions */
strcat (script_name, ".scr");
strcat (command_name, ".rec");
if (option_save_quetzal)
strcat (save_name, ".sav");
else
strcat (save_name, ".frotz");
strcat (auxilary_name, ".aux");
}/* os_process_arguments */
/*
* os_init_screen
*
* Initialise the IO interface. Prepare the screen and other devices
* (mouse, sound board). Set various OS depending story file header
* entries:
*
* h_config (aka flags 1)
* h_flags (aka flags 2)
* h_screen_cols (aka screen width in characters)
* h_screen_rows (aka screen height in lines)
* h_screen_width
* h_screen_height
* h_font_height (defaults to 1)
* h_font_width (defaults to 1)
* h_default_foreground
* h_default_background
* h_interpreter_number
* h_interpreter_version
* h_user_name (optional; not used by any game)
*
* Finally, set reserve_mem to the amount of memory (in bytes) that
* should not be used for multiple undo and reserved for later use.
*
* (Unix has a non brain-damaged memory model which dosen't require such
* ugly hacks, neener neener neener. --GH :)
*
*/
void os_init_screen (void)
{
/*trace(TRACE_CALLS);*/
curses_active = 1; /* Let os_fatal know curses is running */
initscr(); /* Set up curses */
cbreak(); /* Raw input mode, no line processing */
noecho(); /* No input echo */
nonl(); /* No newline translation */
intrflush(stdscr, TRUE); /* Flush output on interrupt */
keypad(stdscr, TRUE); /* Enable the keypad and function keys */
scrollok(stdscr, FALSE); /* No scrolling unless explicitly asked for */
if (h_version == V3 && user_tandy_bit != 0)
h_config |= CONFIG_TANDY;
if (h_version == V3)
h_config |= CONFIG_SPLITSCREEN;
if (h_version >= V4)
h_config |= CONFIG_BOLDFACE | CONFIG_EMPHASIS | CONFIG_FIXED | CONFIG_TIMEDINPUT;
if (h_version >= V5)
h_flags &= ~(GRAPHICS_FLAG | MOUSE_FLAG | MENU_FLAG);
#ifdef NO_SOUND
if (h_version >= V5)
h_flags &= ~SOUND_FLAG;
if (h_version == V3)
h_flags &= ~OLD_SOUND_FLAG;
#else
if ((h_version >= 5) && (h_flags & SOUND_FLAG))
h_flags |= SOUND_FLAG;
if ((h_version == 3) && (h_flags & OLD_SOUND_FLAG))
h_flags |= OLD_SOUND_FLAG;
#endif
if (h_version >= V5 && (h_flags & UNDO_FLAG))
if (option_undo_slots == 0)
h_flags &= ~UNDO_FLAG;
getmaxyx(stdscr, h_screen_rows, h_screen_cols);
if (user_screen_height != -1)
h_screen_rows = user_screen_height;
if (user_screen_width != -1)
h_screen_cols = user_screen_width;
h_screen_width = h_screen_cols;
h_screen_height = h_screen_rows;
h_font_width = 1;
h_font_height = 1;
/* Must be after screen dimensions are computed. */
if (h_version == V6) {
if (unix_init_pictures())
h_config |= CONFIG_PICTURES;
else
h_flags &= ~GRAPHICS_FLAG;
}
/* Use the ms-dos interpreter number for v6, because that's the
* kind of graphics files we understand. Otherwise, use DEC. */
h_interpreter_number = h_version == 6 ? INTERP_MSDOS : INTERP_DEC_20;
h_interpreter_version = 'F';
#ifdef COLOR_SUPPORT
/* Enable colors if the terminal supports them, the user did not
* disable colors, and the game or user requested colors. User
* requests them by specifying a foreground or background.
*/
color_enabled = (has_colors()
&& !user_disable_color
&& (((h_version >= 5) && (h_flags & COLOUR_FLAG))
|| (user_foreground_color != -1)
|| (user_background_color != -1)));
/* Maybe we don't want to muck about with changing $TERM to
* xterm-color which some supposedly current Unicies still don't
* understand.
*/
if (user_force_color)
color_enabled = TRUE;
if (color_enabled) {
h_config |= CONFIG_COLOUR;
h_flags |= COLOUR_FLAG; /* FIXME: beyond zork handling? */
start_color();
h_default_foreground =
(user_foreground_color == -1)
? FOREGROUND_DEF : user_foreground_color;
h_default_background =
(user_background_color ==-1)
? BACKGROUND_DEF : user_background_color;
} else
#endif
{
/* Set these per spec 8.3.2. */
h_default_foreground = WHITE_COLOUR;
h_default_background = BLACK_COLOUR;
if (h_flags & COLOUR_FLAG) h_flags &= ~COLOUR_FLAG;
}
os_set_colour(h_default_foreground, h_default_background);
os_erase_area(1, 1, h_screen_rows, h_screen_cols);
}/* os_init_screen */
/*
* os_reset_screen
*
* Reset the screen before the program stops.
*
*/
void os_reset_screen (void)
{
os_set_text_style(0);
os_display_string((zchar *) "[Hit any key to exit.]");
os_read_key(0, FALSE);
scrollok(stdscr, TRUE); scroll(stdscr);
refresh(); endwin();
}/* os_reset_screen */
/*
* os_restart_game
*
* This routine allows the interface to interfere with the process of
* restarting a game at various stages:
*
* RESTART_BEGIN - restart has just begun
* RESTART_WPROP_SET - window properties have been initialised
* RESTART_END - restart is complete
*
*/
void os_restart_game (int stage)
{
}
/*
* os_random_seed
*
* Return an appropriate random seed value in the range from 0 to
* 32767, possibly by using the current system time.
*
*/
int os_random_seed (void)
{
if (user_random_seed == -1)
/* Use the epoch as seed value */
return (time(0) & 0x7fff);
else return user_random_seed;
}/* os_random_seed */
/*
* os_path_open
*
* Open a file in the current directory. If this fails, then search the
* directories in the ZCODE_PATH environmental variable. If that's not
* defined, search INFOCOM_PATH.
*
*/
FILE *os_path_open(const char *name, const char *mode)
{
FILE *fp;
char buf[FILENAME_MAX + 1];
char *p;
/* Let's see if the file is in the currect directory */
/* or if the user gave us a full path. */
if ((fp = fopen(name, mode))) {
return fp;
}
/* If zcodepath is defined in a config file, check that path. */
/* If we find the file a match in that path, great. */
/* Otherwise, check some environmental variables. */
if (option_zcode_path != NULL) {
if ((fp = pathopen(name, option_zcode_path, mode, buf)) != NULL) {
strncpy(story_name, buf, FILENAME_MAX);
return fp;
}
}
if ( (p = getenv(PATH1) ) == NULL)
p = getenv(PATH2);
if (p != NULL) {
fp = pathopen(name, p, mode, buf);
strncpy(story_name, buf, FILENAME_MAX);
return fp;
}
return NULL; /* give up */
} /* os_path_open() */
/*
* pathopen
*
* Given a standard Unix-style path and a filename, search the path for
* that file. If found, return a pointer to that file and put the full
* path where the file was found in fullname.
*
*/
FILE *pathopen(const char *name, const char *p, const char *mode, char *fullname)
{
FILE *fp;
char buf[FILENAME_MAX + 1];
char *bp, lastch;
lastch = 'a'; /* makes compiler shut up */
while (*p) {
bp = buf;
while (*p && *p != PATHSEP)
lastch = *bp++ = *p++;
if (lastch != DIRSEP)
*bp++ = DIRSEP;
strcpy(bp, name);
if ((fp = fopen(buf, mode)) != NULL) {
strncpy(fullname, buf, FILENAME_MAX);
return fp;
}
if (*p)
p++;
}
return NULL;
} /* FILE *pathopen() */
/*
* getconfig
*
* Parse a <variable> <whitespace> <value> config file.
* The til-end-of-line comment character is the COMMENT define. I use '#'
* here. This code originally appeared in my q2-wrapper program. Find it
* at metalab.cs.unc.edu or assorted Quake2 websites.
*
* This section must be modified whenever new options are added to
* the config file. Ordinarily I would use yacc and lex, but the grammar
* is too simple to involve those resources, and I can't really expect all
* compile targets to have those two tools installed.
*
*/
int getconfig(char *configfile)
{
FILE *fp;
int num, num2;
char varname[LINELEN + 1];
char value[LINELEN + 1];
/*
* We shouldn't care if the config file is unreadable or not
* present. Just use the defaults.
*
*/
if ((fp = fopen(configfile, "r")) == NULL)
return FALSE;
while (fgets(varname, LINELEN, fp) != NULL) {
/* If we don't get a whole line, dump the rest of the line */
if (varname[strlen(varname)-1] != '\n')
while (fgetc(fp) != '\n')
;
/* Remove trailing whitespace and newline */
for (num = strlen(varname) - 1; isspace(varname[num]); num--)
;
varname[num+1] = 0;
/* Drop everything past the comment character */
for (num = 0; num <= strlen(varname)+1; num++) {
if (varname[num] == COMMENT)
varname[num] = 0;
}
/* Find end of variable name */
for (num = 0; !isspace(varname[num]) && num < LINELEN; num++);
for (num2 = num; isspace(varname[num2]) && num2 < LINELEN; num2++);
/* Find the beginning of the value */
strncpy(value, &varname[num2], LINELEN);
varname[num] = 0; /* chop off value from the var name */
/* varname now contains the variable name */
/* First, boolean config stuff */
if (strcmp(varname, "attrib_set") == 0) {
option_attribute_assignment = getbool(value);
}
else if (strcmp(varname, "attrib_test") == 0) {
option_attribute_testing = getbool(value);
}
/* else if (strcmp(varname, "error_halt") == 0) {
option_ignore_errors = !getbool(value);
}
*/
else if (strcmp(varname, "color") == 0) {
user_disable_color = !getbool(value);
}
else if (strcmp(varname, "colour") == 0) {
user_disable_color = !getbool(value);
}
else if (strcmp(varname, "force_color") == 0) {
user_force_color = getbool(value);
}
else if (strcmp(varname, "obj_move") == 0) {
option_object_movement = getbool(value);
}
else if (strcmp(varname, "obj_loc") == 0) {
option_object_locating = getbool(value);
}
else if (strcmp(varname, "piracy") == 0) {
option_piracy = getbool(value);
}
else if (strcmp(varname, "ascii") == 0) {
unix_plain_ascii = getbool(value);
}
else if (strcmp(varname, "sound") == 0) {
option_sound = getbool(value);
}
else if (strcmp(varname, "quetzal") == 0) {
option_save_quetzal = getbool(value);
}
else if (strcmp(varname, "tandy") == 0) {
user_tandy_bit = getbool(value);
}
else if (strcmp(varname, "expand_abb") == 0) {
option_expand_abbreviations = getbool(value);
}
/* now for stringtype yet still numeric variables */
else if (strcmp(varname, "background") == 0) {
user_background_color = getcolor(value);
}
else if (strcmp(varname, "foreground") == 0) {
user_foreground_color = getcolor(value);
}
else if (strcmp(varname, "context_lines") == 0) {
option_context_lines = atoi(value);
}
else if (strcmp(varname, "screen_height") == 0) {
user_screen_height = atoi(value);
}
else if (strcmp(varname, "left_margin") == 0) {
option_left_margin = atoi(value);
}
else if (strcmp(varname, "right_margin") == 0) {
option_right_margin = atoi(value);
}
else if (strcmp(varname, "randseed") == 0) {
user_random_seed = atoi(value);
}
else if (strcmp(varname, "script_width") == 0) {
option_script_cols = atoi(value);
}
else if (strcmp(varname, "undo_slots") == 0) {
option_undo_slots = atoi(value);
}
else if (strcmp(varname, "screen_width") == 0) {
user_screen_width = atoi(value);
}
/* default is set in main() by call to init_err() */
else if (strcmp(varname, "errormode") == 0) {
err_report_mode = geterrmode(value);
}
/* now for really stringtype variable */
else if (strcmp(varname, "zcode_path") == 0) {
option_zcode_path = malloc(strlen(value) * sizeof(char) + 1);
strncpy(option_zcode_path, value, strlen(value) * sizeof(char));
}
/* The big nasty if-else thingy is finished */
} /* while */
return TRUE;
} /* getconfig() */
/*
* getbool
*
* Check a string for something that means "yes" and return TRUE.
* Otherwise return FALSE.
*
*/
int getbool(char *value)
{
int num;
/* Be case-insensitive */
for (num = 0; value[num] !=0; num++)
value[num] = tolower(value[num]);
if (strncmp(value, "y", 1) == 0)
return TRUE;
if (strcmp(value, "true") == 0)
return TRUE;
if (strcmp(value, "on") == 0)
return TRUE;
if (strcmp(value, "1") == 0)
return TRUE;
return FALSE;
} /* getbool() */
/*
* getcolor
*
* Figure out what color this string might indicate and returns an integer
* corresponding to the color macros defined in frotz.h.
*
*/
int getcolor(char *value)
{
int num;
/* Be case-insensitive */
for (num = 0; value[num] !=0; num++)
value[num] = tolower(value[num]);
if (strcmp(value, "black") == 0)
return BLACK_COLOUR;
if (strcmp(value, "red") == 0)
return RED_COLOUR;
if (strcmp(value, "green") == 0)
return GREEN_COLOUR;
if (strcmp(value, "blue") == 0)
return BLUE_COLOUR;
if (strcmp(value, "magenta") == 0)
return MAGENTA_COLOUR;
if (strcmp(value, "cyan") == 0)
return CYAN_COLOUR;
if (strcmp(value, "white") == 0)
return WHITE_COLOUR;
if (strcmp(value, "purple") == 0)
return MAGENTA_COLOUR;
if (strcmp(value, "violet") == 0)
return MAGENTA_COLOUR;
if (strcmp(value, "aqua") == 0)
return CYAN_COLOUR;
/* If we can't tell what that string means,
* we tell caller to use the default.
*/
return -1;
} /* getcolor() */
/*
* geterrmode
*
* Parse for "never", "once", "always", or "fatal" and return a macro
* defined in ux_frotz.h related to the error reporting mode.
*
*/
int geterrmode(char *value)
{
int num;
/* Be case-insensitive */
for (num = 0; value[num] !=0; num++)
value[num] = tolower(value[num]);
if (strcmp(value, "never") == 0)
return ERR_REPORT_NEVER;
if (strcmp(value, "once") == 0)
return ERR_REPORT_ONCE;
if (strcmp(value, "always") == 0)
return ERR_REPORT_ALWAYS;
if (strcmp(value, "fatal") == 0)
return ERR_REPORT_FATAL;
return ERR_DEFAULT_REPORT_MODE;
} /* geterrmode() */
/*
* sig_winch_handler
*
* Called whenever Frotz recieves a SIGWINCH signal to make curses
* cleanly resize the window.
*
*/
void sig_winch_handler(int sig)
{
/*
There are some significant problems involved in getting resizes to work
properly with at least this implementation of the Z Machine and probably
the Z-Machine standard itself. See the file BUGS for a detailed
explaination for this. Because of this trouble, I've left this function
currently does nothing.
*/
/*
signal(sig, SIG_DFL);
signal(sig, SIG_IGN);
signal(SIGWINCH, sig_winch_handler);
*/
}
void redraw(void)
{
/* not implemented */
}
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