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cursesio.c
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/* $Id: cursesio.c,v 1.2 2000/10/04 23:11:44 jholder Exp $
* --------------------------------------------------------------------
* see doc/License.txt for License Information
* --------------------------------------------------------------------
*
* File name: $Id: cursesio.c,v 1.2 2000/10/04 23:11:44 jholder Exp $
*
* Description:
*
* Modification history:
* $Log: cursesio.c,v $
* Revision 1.2 2000/10/04 23:11:44 jholder
* made zscii2latin1 table global
*
* Revision 1.1.1.1 2000/05/10 14:20:50 jholder
*
* imported
*
*
* --------------------------------------------------------------------
*/
/*
*!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
* WARNING: the curses/ncurses library support is _very_ raw and
* not quite complete! Use at your own risk!
*!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
*/
/* cursesio.c */
/*
* I/O module by John Holder 27-May-1998
*/
#define NCURSES_WIDECHAR 1
#include "ztypes.h"
#include <wctype.h>
#include <locale.h>
#include <ncursesw/curses.h>
#include <signal.h>
#include <sys/types.h>
#include <sys/time.h>
#if defined(AIX)
#include <sys/select.h>
#endif
#define EXTENDED 1
#define PLAIN 2
attr_t current_attrib;
#ifdef HARD_COLORS
static ZINT16 current_fg;
static ZINT16 current_bg;
#endif
extern ZINT16 default_fg;
extern ZINT16 default_bg;
extern int hist_buf_size;
/* new stuff for command editing */
int BUFFER_SIZE;
char *commands;
int space_avail;
static int ptr1, ptr2 = 0;
static int end_ptr = 0;
static int row, head_col;
/* done with editing global info */
static int current_row = 1;
static int current_col = 1;
static int saved_row;
static int saved_col;
static int cursor_saved = OFF;
/* begin windowing variables */
WINDOW *zipscr = NULL;
/* end windowing variables */
static void outc( );
static void display_string( char *s );
static int wait_for_char( );
static int read_key( int );
static void set_cbreak_mode( int );
//static void rundown( );
static void get_prev_command( );
static void get_next_command( );
static void get_first_command( );
static void delete_command( );
void add_command( char *, int );
int display_command( char * );
int input_line( int, char *, int, int *, int );
int input_character( int );
static int wait_for_char( int );
void outc( int );
void move_cursor( int, int );
void get_cursor_position( int *, int * );
void set_attribute( int );
void display_char( int );
/* done with editing prototypes */
static int colour_map[] = { COLOR_BLACK, COLOR_RED, COLOR_GREEN, COLOR_YELLOW,
COLOR_BLUE, COLOR_MAGENTA, COLOR_CYAN, COLOR_WHITE };
/* print unicode char */
void outc( int c )
{
int x, y;
getyx( stdscr, y, x );
if ( c == '\n' )
{
if ( ++y < LINES )
move( y, 0 );
}
else
{
if ( x >= COLS - 1 )
{
/* Close to the edge so no wrapping */
if ( c <= 0x7f )
{
chtype s = c | current_attrib | COLOR_PAIR( 8 * current_bg + current_fg + 1 );
addchnstr(&s, 1);
}
else
{
cchar_t ch[2];
wchar_t wch[2];
wch[0] = c;
wch[1] = 0;
setcchar( ch, wch, current_attrib, A_COLOR & (8 * current_bg + current_fg + 1), NULL );
add_wchnstr( ch, 1 );
}
move( current_row - 1, COLS );
}
else if ( c <= 0x7f )
addch( c );
else
{
cchar_t ch[2];
wchar_t wch[2];
wch[0] = c;
wch[1] = 0;
setcchar( ch, wch, current_attrib, A_COLOR & (8 * current_bg + current_fg + 1), NULL );
add_wch( ch );
}
}
refresh( );
} /* outc */
void initialize_screen( )
{
int row, col;
int i,j;
setlocale( LC_ALL, "" );
/* start the curses environment */
if ( !initscr( ) )
{
fatal( "initialize_screen(): Couldn't init curses." );
}
noecho( ); /* by default, don't echo what user types */
nonl( ); /* don't xlate newlines */
keypad( stdscr, TRUE ); /* Turn on the keypad */
meta( stdscr, TRUE ); /* Turn on 8-bit clean input */
set_escdelay( 0 );
/* COLS and LINES set by curses */
screen_cols = COLS;
screen_rows = LINES;
#if defined HARD_COLORS
start_color();
/* set colors */
#if 0
for ( i = 0; i < 8; i++ )
init_color( colour_map[i], ( i & 1 ) * 1000, ( i & 2 ) * 500, ( i & 4 ) * 250 );
#endif
/* set all colour pairs to be used */
for ( i = 0; i < 8; i++ )
for ( j = 0; j < 8; j++ )
init_pair( 8 * j + i + 1, colour_map[i], colour_map[j] );
set_colours( 1, 1 );
#endif
clear_screen( );
row = screen_rows / 2 - 1;
col = ( screen_cols - ( sizeof ( JZIPVER ) - 1 ) ) / 2;
move_cursor( row, col );
display_string( JZIPVER );
row = screen_rows / 2;
col = ( screen_cols - ( sizeof ( "The story is loading..." ) - 1 ) ) / 2;
move_cursor( row, col );
display_string( "The story is loading..." );
/* Last release (2.0.1g) claimed DEC tops 20. I'm a sadist. Sue me. */
h_interpreter = INTERP_MSDOS;
JTERP = INTERP_UNIX;
commands = ( char * ) malloc( hist_buf_size * sizeof ( char ) );
if ( commands == NULL )
fatal( "initialize_screen(): Couldn't allocate history buffer." );
BUFFER_SIZE = hist_buf_size;
space_avail = hist_buf_size - 1;
set_cbreak_mode( 1 );
interp_initialized = 1;
} /* initialize_screen */
void restart_screen( )
{
zbyte_t high = 1, low = 0;
/* changing the character set is not standard compiant */
if ( fIBMGraphics )
high = low = 0;
cursor_saved = OFF;
set_byte( H_STANDARD_HIGH, high );
set_byte( H_STANDARD_LOW, low );
if ( h_type < V4 )
set_byte( H_CONFIG, ( get_byte( H_CONFIG ) | CONFIG_WINDOWS ) );
else
{
/* turn stuff on */
set_byte( H_CONFIG,
( get_byte( H_CONFIG ) | CONFIG_BOLDFACE | CONFIG_EMPHASIS | CONFIG_FIXED |
CONFIG_TIMEDINPUT ) );
#if defined HARD_COLORS
if ( !monochrome )
set_byte( H_CONFIG, ( get_byte( H_CONFIG ) | CONFIG_COLOUR ) );
set_byte( H_BG_DEFAULT_COLOR, default_bg + 2 );
set_byte( H_FG_DEFAULT_COLOR, default_fg + 2 );
#endif
/* turn stuff off */
set_byte( H_CONFIG, ( get_byte( H_CONFIG ) & ~CONFIG_PICTURES & ~CONFIG_SFX ) );
}
/* Force graphics and sound off as we can't do them */
set_word( H_FLAGS, ( get_word( H_FLAGS ) & ~GRAPHICS_FLAG & ~NEW_SOUND_FLAG ) );
} /* restart_screen */
void reset_screen( )
{
/* only do this stuff on exit when called AFTER initialize_screen */
if ( interp_initialized )
{
delete_status_window( );
select_text_window( );
display_string( "[Hit any key to exit.]" );
getch( );
set_attribute( NORMAL );
set_colours( 1, 1 );
erase( );
set_cbreak_mode( 0 );
echo( );
nl( );
/* End the curses screen environment */
endwin( );
}
} /* reset_screen */
void clear_screen( )
{
// erase( ); /* clear screen */
int row;
for ( row = 1; row <= screen_rows; row++ )
{
move_cursor( row, 1 );
clear_line( );
}
move_cursor( 1, 1 );
} /* clear_screen */
void select_status_window( )
{
save_cursor_position( );
} /* select_status_window */
void select_text_window( )
{
restore_cursor_position( );
} /* select_text_window */
void create_status_window( )
{
int row, col;
get_cursor_position( &row, &col );
/* set up a software scrolling region */
/*
setscrreg(status_size, screen_rows-1);
*/
move_cursor( row, col );
} /* create_status_window */
void delete_status_window( )
{
int row, col;
get_cursor_position( &row, &col );
/* set up a software scrolling region */
/*
setscrreg(0, screen_rows-1);
*/
move_cursor( row, col );
} /* delete_status_window */
void clear_line( )
{
// clrtoeol( );
int i;
int x, y;
chtype s = ' ' | COLOR_PAIR( 8 * current_bg + current_fg + 1 );
getyx( stdscr, y, x );
for ( i = x; i < screen_cols; i++ )
mvaddchnstr( y, i, &s, 1 );
} /* clear_line */
void clear_text_window( )
{
int i, row, col;
get_cursor_position( &row, &col );
for ( i = status_size + 1; i <= screen_rows; i++ )
{
move_cursor( i, 1 );
clear_line( );
}
move_cursor( row, col );
} /* clear_text_window */
void clear_status_window( )
{
int i, row, col;
get_cursor_position( &row, &col );
for ( i = status_size; i; i-- )
{
move_cursor( i, 1 );
clear_line( );
}
move_cursor( row, col );
} /* clear_status_window */
void move_cursor( int row, int col )
{
move( row - 1, col - 1 );
current_row = row;
current_col = col;
} /* move_cursor */
void get_cursor_position( int *row, int *col )
{
int x, y;
getyx( stdscr, y, x );
*row = y + 1;
*col = x + 1;
} /* get_cursor_position */
void save_cursor_position( )
{
if ( cursor_saved == OFF )
{
get_cursor_position( &saved_row, &saved_col );
cursor_saved = ON;
}
} /* save_cursor_position */
void restore_cursor_position( )
{
if ( cursor_saved == ON )
{
move_cursor( saved_row, saved_col );
cursor_saved = OFF;
}
} /* restore_cursor_position */
void set_attribute( int attribute )
{
if ( attribute == NORMAL )
{
attroff( WA_REVERSE | WA_BOLD | WA_UNDERLINE );
current_attrib = WA_NORMAL;
}
if ( attribute & REVERSE )
{
attron( WA_REVERSE );
current_attrib |= WA_REVERSE;
}
if ( attribute & BOLD )
{
attron( WA_BOLD );
current_attrib |= WA_BOLD;
}
if ( attribute & EMPHASIS )
{
attron( WA_UNDERLINE );
current_attrib |= WA_UNDERLINE;
}
if ( attribute & FIXED_FONT )
{
}
} /* set_attribute */
static void display_string( char *s )
{
while ( *s )
display_char( *s++ );
} /* display_string */
void display_char( int c )
{
if ( c == 7 )
{
beep();
return;
}
outc( c );
if ( ++current_col > screen_cols )
current_col = screen_cols;
} /* display_char */
void scroll_line( )
{
int row, col;
get_cursor_position( &row, &col );
if ( row < screen_rows )
{
display_char( '\n' );
}
else
{
scrollok( stdscr, TRUE );
setscrreg( status_size, screen_rows - 1 );
wscrl( stdscr, 1 );
setscrreg( 0, screen_rows - 1 );
scrollok( stdscr, FALSE );
display_char( '\n' );
}
current_col = 1;
if ( ++current_row > screen_rows )
{
current_row = screen_rows;
move_cursor( current_row, 1 );
clear_line();
move_cursor( current_row, 1 );
}
} /* scroll_line */
/*
* Previous command system
*
* Here's how this works:
*
* The previous command buffer is BUFFER_SIZE bytes long. After the player
* presses Enter, the command is added to this buffer, with a trailing '\n'
* added. The '\n' is used to show where one command ends and another begins.
*
* The up arrow key retrieves a previous command. This is done by working
* backwards through the buffer until a '\n' is found. The down arrow
* retieves the next command by counting forward. The ptr1 and ptr2
* values hold the start and end of the currently displayed command.
*
* PgUp displays the first ("oldest") command, while PgDn displays a blank
* prompt.
*/
int display_command( char *buffer )
{
int counter, loop;
move_cursor( row, head_col );
clear_line( );
move_cursor( row, head_col );
/* ptr1 = end_ptr when the player has selected beyond any previously
* saved command.
*/
if ( ptr1 == end_ptr )
{
return ( 0 );
}
else
{
/* Put the characters from the save buffer into the variable "buffer".
* The return value (counter) is the value of *read_size.
*/
counter = 0;
for ( loop = ptr1; loop <= ptr2; loop++ )
{
buffer[counter] = commands[loop];
display_char( translate_from_zscii ( buffer[counter++] ) );
}
return ( counter );
}
} /* display_command */
void get_prev_command( )
{
/* Checking to see if ptr1 > 0 prevents moving ptr1 and ptr2 into
* never-never land.
*/
if ( ptr1 > 0 )
{
/* Subtract 2 to jump over any intervening '\n' */
ptr2 = ptr1 -= 2;
/* If we've jumped too far, fix it */
if ( ptr1 < 0 )
ptr1 = 0;
if ( ptr2 < 0 )
ptr2 = 0;
if ( ptr1 > 0 )
{
do
/* Decrement ptr1 until a '\n' is found */
ptr1--;
while ( ( ptr1 >= 0 ) && ( commands[ptr1] != '\n' ) );
/* Then advance back to the position after the '\n' */
ptr1++;
}
}
} /* get_prev_command */
void get_next_command( )
{
if ( ptr2 < end_ptr )
{
/* Add 2 to advance over any intervening '\n' */
ptr1 = ptr2 += 2;
if ( ptr2 >= end_ptr )
{
ptr1 = ptr2 = end_ptr;
}
else
{
do
ptr2++;
while ( ( commands[ptr2] != '\n' ) && ( ptr2 <= end_ptr ) );
ptr2--;
}
}
} /* get_next_command */
void get_first_command( )
{
if ( end_ptr > 1 )
{
ptr1 = ptr2 = 0;
do
ptr2++;
while ( commands[ptr2] != '\n' );
ptr2--;
}
} /* get_first_command */
void delete_command( )
{
/* Deletes entire commands from the beginning of the command buffer */
int loop;
/* Keep moving the characters in the command buffer one space to the left
* until a '\n' is found...
*/
do
{
for ( loop = 1; loop < end_ptr; loop++ )
{
commands[loop - 1] = commands[loop];
}
end_ptr--;
space_avail++;
}
while ( commands[0] != '\n' );
/* ...then delete the '\n' */
for ( loop = 1; loop < end_ptr; loop++ )
{
commands[loop - 1] = commands[loop];
}
end_ptr--;
space_avail++;
ptr1 = ptr2 = end_ptr;
} /* delete_command */
void add_command( char *buffer, int size )
{
int loop, counter;
/* Add the player's last command to the command buffer */
counter = 0;
for ( loop = end_ptr; loop < ( end_ptr + size ); loop++ )
{
commands[loop] = buffer[counter++];
}
/* Add one space for '\n' */
end_ptr += size + 1;
ptr1 = ptr2 = end_ptr;
commands[end_ptr - 1] = '\n';
space_avail -= size + 1;
} /* add_command */
int input_line( int buflen, char *buffer, int timeout, int *read_size, int start_col )
{
int c, col;
int init_char_pos, curr_char_pos;
int loop, tail_col;
int keyfunc = 0;
struct timeval t0, t1;
/*
* init_char_pos : the initial cursor location
* curr_char_pos : the current character position within the input line
* head_col: the head of the input line (used for cursor position)
* (global variable)
* tail_col: the end of the input line (used for cursor position)
*/
get_cursor_position( &row, &col );
head_col = start_col;
tail_col = start_col + *read_size;
init_char_pos = curr_char_pos = col - start_col;
ptr1 = ptr2 = end_ptr;
gettimeofday( &t0, NULL );
for ( ;; )
{
keyfunc = 0;
/* Read a single keystroke */
fflush( stdout );
if ( timeout != 0 )
{
int dt, rem_time;
gettimeofday( &t1, NULL );
dt = ( t1.tv_sec - t0.tv_sec ) * 10 + ( t1.tv_usec - t0.tv_usec ) / 100000;
rem_time = timeout - dt;
if ( rem_time <= 0 || wait_for_char( rem_time ) )
return ( -1 );
}
c = read_key( EXTENDED );
if ( line_editing )
{
if ( c == 0x81 )
{ /* Up arrow */
get_prev_command( );
curr_char_pos = *read_size = display_command( buffer );
tail_col = head_col + *read_size;
keyfunc = 1;
}
else if ( c == 0x82 )
{ /* Down arrow */
get_next_command( );
curr_char_pos = *read_size = display_command( buffer );
tail_col = head_col + *read_size;
keyfunc = 1;
}
else if ( fIBMGraphics && c == 0x09a )
{ /* PgUp passed as up arrow */
c = 0x81;
}
else if ( c == 0x09a )
{ /* PgUp */
get_first_command();
curr_char_pos = *read_size = display_command( buffer );
tail_col = head_col + *read_size;
keyfunc = 1;
}
else if ( fIBMGraphics && c == 0x094 )
{ /* PgDn passed as down arrow */
c = 0x82;
}
else if ( c == 0x094 || c == 27 )
{ /* PgDn or Esc */
ptr1 = ptr2 = end_ptr;
curr_char_pos = *read_size = display_command( buffer );
tail_col = head_col + *read_size;
keyfunc = 1;
}
/****** Cursor Editing Keys ******/
else if ( c == 0x83 )
{ /* Left arrow */
get_cursor_position( &row, &col );
/* Prevents moving the cursor into the prompt */
if ( col > head_col )
{
move_cursor( row, --col );
curr_char_pos--;
}
keyfunc = 1;
}
else if ( c == 0x84 )
{ /* Right arrow */
get_cursor_position( &row, &col );
/* Prevents moving the cursor beyond the end of the input line */
if ( col < tail_col )
{
move_cursor( row, ++col );
curr_char_pos++;
}
keyfunc = 1;
}
else if ( c == 0x092 )
{ /* End */
move_cursor( row, tail_col );
curr_char_pos = init_char_pos + *read_size;
keyfunc = 1;
}
else if ( c == 0x098 )
{ /* Home */
move_cursor( row, head_col );
curr_char_pos = init_char_pos;
keyfunc = 1;
}
else if ( c == 0x7f )
{ /* Delete */
if (curr_char_pos < *read_size)
{
get_cursor_position ( &row, &col );
for ( loop = curr_char_pos; loop < *read_size; loop++ )
{
buffer[loop] = buffer[loop + 1];
}
tail_col--;
( *read_size )--;
for ( loop = curr_char_pos; loop < *read_size; loop++ )
{
display_char( translate_from_zscii ( buffer[loop] ) );
}
display_char( ' ' );
move_cursor( row, col );
}
keyfunc = 1;
}
}
if ( !keyfunc )
{
if ( c >= 0x81 && c <= 0x9a )
{
int addr = get_word( H_FUNCTION_KEYS_OFFSET );
if ( h_type >= V5 && addr > 0 )
{
int t;
/* Check for game specifiec terminating character */
while ( ( t = get_byte( addr++ ) ) != 0 )
{
if ( t == c || t == 255 )
{
move_cursor( row, tail_col );
return c;
}
}
}
}
else if ( c == '\b' || c == 0x7f ) /* Backspace or Delete */
{
get_cursor_position( &row, &col );
if ( col > head_col )
{
move_cursor( row, --col );
for ( loop = curr_char_pos; loop < *read_size; loop++ )
{
buffer[loop - 1] = buffer[loop];
display_char( translate_from_zscii ( buffer[loop - 1] ) );
}
display_char( ' ' );
curr_char_pos--;
tail_col--;
( *read_size )--;
move_cursor( row, col );
}
}
else if ( c != 27 )
{
/* Normal key action */
if ( *read_size == ( buflen - 1 ) )
{
/* Ring bell if buffer is full */
flash( );
}
else
{
/* Scroll line if return key pressed */
if ( c == '\r' || c == '\n' )
{
c = '\n';
move_cursor( row, tail_col );
scroll_line( );
}
if ( c == '\n' )
{
/* Add the current command to the command buffer */
if ( *read_size > space_avail )
{
do
delete_command( );
while ( *read_size > space_avail );
}
if ( *read_size > 0 )
add_command( buffer, *read_size );
/* Return key if it is a line terminator */
return ( c );
}
else
{
get_cursor_position( &row, &col );
/* Used if the cursor is not at the end of the line */
if ( col < tail_col )
{
/* Moves the input line one character to the right */
for ( loop = *read_size; loop >= curr_char_pos; loop-- )
{
buffer[loop + 1] = buffer[loop];
}
/* Puts the character into the space created by the
* "for" loop above */
buffer[curr_char_pos] = ( char ) c;
/* Increment the end of the line values */
( *read_size )++;
tail_col++;
/* Move the cursor back to its original position */
move_cursor( row, col );
/* Redisplays the input line from the point of
* insertion */
for ( loop = curr_char_pos; loop < *read_size; loop++ )
{
display_char( translate_from_zscii ( buffer[loop] ) );
}
/* Moves the cursor to the next position */
move_cursor( row, ++col );
curr_char_pos++;
}
else
{
/* Used if the cursor is at the end of the line */
buffer[curr_char_pos++] = ( char ) c;
display_char( translate_from_zscii ( c ) );
( *read_size )++;
tail_col++;
}
}
}
}
}
}
} /* input_line */
/*
* Patched 28-June-1995: Changed this routine's expectation of a \n to
* a \r so the form in Bureaucracy works. Patch
* applied by John Holder.
*/
int input_character( int timeout )
{
int c;
fflush( stdout );
if ( timeout != 0 )
{
if ( wait_for_char( timeout ) )
return ( -1 );
}
c = read_key( PLAIN );
return ( c );
} /* input_character */
/* timeout is in tenths of a second */
static int wait_for_char( int timeout )
{
int nfds, status;
fd_set readfds;
struct timeval tv;
struct timezone tz;
gettimeofday( &tv, &tz );
if ( timeout == 0 )
return ( -1 );
refresh();
tv.tv_sec = ( timeout * 100000 ) / 1000000;
tv.tv_usec = ( timeout * 100000 ) % 1000000;