FreeBSD-5.3/usr.sbin/pcvt/fontedit/fontedit.c
/*
* fontedit
* Fonteditor for VT220
*
* BUGS:
* o Cursor motion is less than optimal (but who cares at 9600),
*
* COMPILE:
* cc -O fontedit.c -o fontedit
* (use Makefile)
*
* Copyright (c) 1987 by Greg Franks.
*
* Permission is granted to do anything you want with this program
* except claim that you wrote it.
*
*
* REVISION HISTORY:
*
* Nov 21, 1987 - Fixed man page to say "Fontedit" instead of "Top"
* Nov 22, 1987 - Added BSD Compatible ioctl, turned cursor on/off
* - eap@bucsf.bu.edu
* $FreeBSD: src/usr.sbin/pcvt/fontedit/fontedit.c,v 1.6 2002/05/28 21:52:10 alfred Exp $
*/
void clear_screen();
#include <stdio.h>
#ifdef SYSV
#include <sys/termio.h>
#endif /* SYSV */
#ifdef BSD
#include <sys/ioctl.h>
#endif /* BSD */
#if defined (__NetBSD__) || defined (__FreeBSD__)
#include <sys/termios.h>
#include <sys/ioctl.h>
#endif /* __NetBSD__ || __FreeBSD__ */
#include <signal.h>
#ifdef CURFIX
#define CURSORON "\033[?25h"
#define CURSOROFF "\033[?25l"
#endif /* CURFIX */
#define MAX_ROWS 10
#define MAX_COLS 8
typedef enum { false, true } bool;
#define KEY_FIND 0x0100
#define KEY_INSERT 0x0101
#define KEY_REMOVE 0x0102
#define KEY_SELECT 0x0103
#define KEY_PREV 0x0104
#define KEY_NEXT 0x0105
#define KEY_F6 0X0106
#define KEY_F7 0x0107
#define KEY_F8 0x0108
#define KEY_F9 0x0109
#define KEY_F10 0x010a
#define KEY_F11 0x010b
#define KEY_F12 0x010c
#define KEY_F13 0x010d
#define KEY_F14 0x010e
#define KEY_HELP 0x010f
#define KEY_DO 0x0110
#define KEY_F17 0x0111
#define KEY_F18 0x0112
#define KEY_F19 0x0113
#define KEY_F20 0x0114
#define KEY_UP 0x0115
#define KEY_DOWN 0x0116
#define KEY_RIGHT 0x0117
#define KEY_LEFT 0x0118
/*
* Position of main drawing screen.
*/
#define ROW_OFFSET 3
#define COL_OFFSET 10
/*
* Position of the DRCS table.
*/
#define TABLE_ROW 4
#define TABLE_COL 50
/*
*
*/
#define ERROR_ROW 20
#define ERROR_COL 40
bool display_table[MAX_ROWS][MAX_COLS];
#define TOTAL_ENTRIES (128 - 32)
#define SIXELS_PER_CHAR 16
char font_table[TOTAL_ENTRIES][SIXELS_PER_CHAR];
unsigned int current_entry;
#ifdef SYSV
struct termio old_stty, new_stty;
#endif /* SYSV */
#ifdef BSD
struct sgttyb old_stty, new_stty;
#endif /* BSD */
#if defined (__NetBSD__) || defined (__FreeBSD__)
struct termios old_stty, new_stty;
#endif /* __NetBSD__ || __FreeBSD__ */
FILE * font_file = (FILE *)0;
/*
* Interrupt
* Exit gracefully.
*/
interrupt()
{
void clear_screen();
#ifdef CURFIX
printf("%s\n",CURSORON);
#endif /* CURFIX */
#ifdef SYSV
ioctl( 0, TCSETA, &old_stty );
#endif /* SYSV */
#ifdef BSD
ioctl( 0, TIOCSETP, &old_stty );
#endif /* BSD */
#if defined (__NetBSD__) || defined (__FreeBSD__)
ioctl( 0, TIOCSETA, &old_stty );
#endif /* __NetBSD__ || __FreeBSD__ */
clear_screen();
exit( 0 );
}
/*
* Main
* Grab input/output file and call main command processor.
*/
main( argc, argv )
int argc;
char *argv[];
{
void command(), init_restore(), clear_screen();
void save_table(), get_table(), extract_entry();
if ( argc != 2 ) {
fprintf( stderr, "usage: fontedit filename\n" );
exit( 1 );
}
printf( "Press HELP for help\n" );
printf( "\033P1;1;2{ @\033\\" ); /* Clear font buffer */
fflush( stdout );
sleep( 1 ); /* Let terminal catch up */
/* otherwise we get frogs */
if ( ( font_file = fopen( argv[1], "r" ) ) == (FILE *)0 ) {
if ( ( font_file = fopen( argv[1], "w" ) ) == (FILE *)0 ) {
fprintf( stderr, "Cannot create file %s \n", argv[1] );
exit( 1 );
}
}
fclose( font_file );
if ( ( font_file = fopen( argv[1], "r" ) ) != (FILE *)0 ) {
get_table( font_file );
fclose( font_file );
}
if ( ( font_file = fopen( argv[1], "r+" ) ) == (FILE *)0 ) {
fprintf( stderr, "Cannot open %s for writing\n", argv[1] );
exit( 1 );
}
#ifdef CURFIX
printf("%s\n",CURSOROFF);
#endif /* CURFIX */
#ifdef SYSV
ioctl( 0, TCGETA, &old_stty );
#endif /* SYSV */
#ifdef BSD
ioctl( 0, TIOCGETP, &old_stty );
#endif /* BSD */
#if defined (__NetBSD__) || defined (__FreeBSD__)
ioctl( 0, TIOCGETA, &old_stty );
#endif /* __NetBSD__ || __FreeBSD__ */
signal( SIGINT, (void *) interrupt );
new_stty = old_stty;
#ifdef SYSV
new_stty.c_lflag &= ~ICANON;
new_stty.c_cc[VMIN] = 1;
ioctl( 0, TCSETA, &new_stty );
#endif /* SYSV */
#if defined (__NetBSD__) || defined (__FreeBSD__)
new_stty.c_lflag &= ~ICANON;
new_stty.c_lflag &= ~ECHO;
new_stty.c_cc[VMIN] = 1;
ioctl( 0, TIOCSETA, &new_stty );
#endif /* __NetBSD__ || __FreeBSD__ */
#ifdef BSD
new_stty.sg_flags |= CBREAK;
new_stty.sg_flags &= ~ECHO;
ioctl( 0, TIOCSETP, &new_stty );
#endif /* BSD */
current_entry = 1;
extract_entry( current_entry );
init_restore();
command();
#ifdef SYSV
ioctl( 0, TCSETA, &old_stty );
#endif /* SYSV */
#ifdef BSD
ioctl( 0, TIOCSETP, &old_stty );
#endif /* BSD */
#if defined (__NetBSD__) || defined (__FreeBSD__)
ioctl( 0, TIOCSETA, &old_stty );
#endif /* __NetBSD__ || __FreeBSD__ */
clear_screen();
/* Overwrite the old file. */
fseek( font_file, 0L, 0 );
save_table( font_file );
fclose( font_file );
#ifdef CURFIX
printf("%s\n",CURSORON);
#endif /* CURFIX */
}
/*
* Command
* Process a function key.
*
* The user cannot fill in slots 0 or 95 (space and del respecitively).
*/
void
command()
{
register int c;
register int row, col;
register int i, j;
bool change, error, override;
void build_entry(), extract_entry(), send_entry(), print_entry();
void highlight(), draw_current(), init_restore(), help();
void warning();
change = false;
error = false;
override = false;
row = 0; col = 0;
highlight( row, col, true );
for ( ;; ) {
c = get_key();
highlight( row, col, false ); /* turn cursor off */
if ( error ) {
move ( ERROR_ROW, ERROR_COL );
printf( "\033[K" ); /* Clear error message */
move ( ERROR_ROW+1, ERROR_COL );
printf( "\033[K" ); /* Clear error message */
error = false;
} else {
override = false;
}
switch ( c ) {
case KEY_FIND: /* update DRCS */
if ( !change && !override ) {
warning( "No changes to save" );
override = true;
error = true;
} else {
build_entry( current_entry );
send_entry( current_entry );
print_entry( current_entry, true );
change = false;
}
break;
case KEY_F6: /* Turn on pixel */
change = true;
display_table[row][col] = true;
highlight( row, col, false );
col = ( col + 1 ) % MAX_COLS;
if ( col == 0 )
row = ( row + 1 ) % MAX_ROWS;
break;
case KEY_F7: /* Turn off pixel */
change = true;
display_table[row][col] = false;
highlight( row, col, false );
col = ( col + 1 ) % MAX_COLS;
if ( col == 0 )
row = ( row + 1 ) % MAX_ROWS;
break;
case KEY_INSERT: /* Insert a blank row */
change = true;
for ( j = 0; j < MAX_COLS; ++j ) {
for ( i = MAX_ROWS - 1; i > row; --i ) {
display_table[i][j] = display_table[i-1][j];
}
display_table[row][j] = false;
}
draw_current();
break;
case KEY_REMOVE: /* Remove a row */
change = true;
for ( j = 0; j < MAX_COLS; ++j ) {
for ( i = row; i < MAX_ROWS - 1; ++i ) {
display_table[i][j] = display_table[i+1][j];
}
display_table[MAX_ROWS-1][j] = false;
}
draw_current();
break;
case KEY_F13: /* Clear buffer */
if ( change && !override ) {
warning( "Changes not saved" );
error = true;
override = true;
} else {
for ( j = 0; j < MAX_COLS; ++j ) {
for ( i = 0; i < MAX_ROWS; ++i ) {
display_table[i][j] = false;
}
}
draw_current();
}
break;
case KEY_SELECT: /* Select font from DRCS */
if ( change && !override ) {
warning( "Changes not saved" );
error = true;
override = true;
} else {
extract_entry( current_entry );
draw_current();
}
break;
case KEY_PREV: /* Move to prev entry in DRCS */
if ( change && !override ) {
warning( "Changes not saved" );
override = true;
error = true;
} else {
print_entry( current_entry, false );
current_entry = current_entry - 1;
if ( current_entry == 0 )
current_entry = TOTAL_ENTRIES - 2;
print_entry( current_entry, true );
}
break;
case KEY_NEXT: /* Move to next entry in DRCS */
if ( change && !override ) {
warning( "Changes not saved" );
override = true;
error = true;
} else {
print_entry( current_entry, false );
current_entry = current_entry + 1;
if ( current_entry == TOTAL_ENTRIES - 1 )
current_entry = 1;
print_entry( current_entry, true );
}
break;
case KEY_UP: /* UP one row. */
if ( row == 0 )
row = MAX_ROWS;
row = row - 1;
break;
case KEY_DOWN: /* Guess. */
row = ( row + 1 ) % MAX_ROWS;
break;
case KEY_RIGHT:
col = ( col + 1 ) % MAX_COLS;
break;
case KEY_LEFT:
if ( col == 0 )
col = MAX_COLS;
col = col - 1;
break;
case KEY_HELP: /* Display helpful info */
clear_screen();
help();
c = getchar();
init_restore();
break;
case '\004': /* All done! */
return;
case '\f': /* Redraw display */
init_restore();
break;
default: /* user is a klutzy typist */
move ( ERROR_ROW, ERROR_COL );
printf( "Unknown key: " );
if ( c < 0x20 ) {
printf( "^%c", c );
} else if ( c < 0x0100 ) {
printf( "%c", c );
} else {
printf( "0x%04x", c );
}
fflush( stdout );
error = true;
}
highlight( row, col, true ); /* turn cursor on */
}
}
char *key_table[] = {
"\033[1~", /* Find */
"\033[2~", /* Insert */
"\033[3~", /* Remove */
"\033[4~", /* Select */
"\033[5~", /* Prev */
"\033[6~", /* Next */
"\033[17~",
"\033[18~",
"\033[19~",
"\033[20~",
"\033[21~",
"\033[23~",
"\033[24~",
"\033[25~",
"\033[26~",
"\033[28~",
"\033[29~",
"\033[31~",
"\033[32~",
"\033[33~",
"\033[34~",
"\033[A",
"\033[B",
"\033[C",
"\033[D",
(char *)0 };
/*
* get_key
* Convert VT220 escape sequence into something more reasonable.
*/
int
get_key()
{
register char *p;
char s[10];
register int i, j;
p = s;
for ( i = 0; i < 10; ++i ) {
*p = getchar();
if ( i == 0 && *p != '\033' )
return( (int)*p ); /* Not an escape sequence */
if ( *p != '\033' && *p < 0x0020 )
return( (int)*p ); /* Control character */
*++p = '\0'; /* Null terminate */
for ( j = 0; key_table[j]; ++j ) {
if ( strcmp( s, key_table[j] ) == 0 ) {
return( j | 0x0100 );
}
}
}
return( -1 );
}
/*
* pad
* Emit nulls so that the terminal can catch up.
*/
pad()
{
int i;
for ( i = 0; i < 20; ++i )
putchar( '\000' );
fflush( stdout );
}
/*
* init_restore
* refresh the main display table.
*/
void
init_restore()
{
register int row, col;
register int i;
void draw_current(), clear_screen(), print_entry();
clear_screen();
for ( col = 0; col < MAX_COLS; ++col ) {
move( ROW_OFFSET - 2, col * 3 + COL_OFFSET + 1 );
printf( "%d", col );
}
move( ROW_OFFSET - 1, COL_OFFSET );
printf( "+--+--+--+--+--+--+--+--+" );
move( ROW_OFFSET + MAX_ROWS * 2, COL_OFFSET );
printf( "+--+--+--+--+--+--+--+--+" );
for ( row = 0; row < MAX_ROWS; ++row ) {
if ( row != 0 && row != 7 ) {
move( row * 2 + ROW_OFFSET, COL_OFFSET - 2 );
printf( "%d|", row );
move( row * 2 + ROW_OFFSET + 1, COL_OFFSET - 1 );
printf( "|" );
move( row * 2 + ROW_OFFSET, COL_OFFSET + MAX_COLS * 3 );
printf( "|" );
move( row * 2 + ROW_OFFSET + 1, COL_OFFSET + MAX_COLS * 3 );
printf( "|" );
} else {
move( row * 2 + ROW_OFFSET, COL_OFFSET - 2 );
printf( "%d*", row );
move( row * 2 + ROW_OFFSET + 1, COL_OFFSET - 1 );
printf( "*" );
move( row * 2 + ROW_OFFSET, COL_OFFSET + MAX_COLS * 3 );
printf( "*" );
move( row * 2 + ROW_OFFSET + 1, COL_OFFSET + MAX_COLS * 3 );
printf( "*" );
}
}
draw_current();
move( TABLE_ROW - 1, TABLE_COL - 1 );
printf( "+-+-+-+-+-+-+-+-+-+-+-+-+" );
move( TABLE_ROW + 8 * 2 - 1, TABLE_COL - 1 );
printf( "+-+-+-+-+-+-+-+-+-+-+-+-+" );
for ( i = 0; i < 8; ++i ) {
move ( TABLE_ROW + i * 2, TABLE_COL - 1 );
printf( "|" );
move ( TABLE_ROW + i * 2 + 1, TABLE_COL - 1 );
printf( "+" );
move ( TABLE_ROW + i * 2, TABLE_COL + 12 * 2 - 1);
printf( "|" );
move ( TABLE_ROW + i * 2 + 1, TABLE_COL +12 * 2 - 1);
printf( "+" );
}
for ( i = 0; i < TOTAL_ENTRIES; ++i )
print_entry( i, (i == current_entry) ? true : false );
}
/*
* draw_current
* Draw the complete current entry.
*/
void
draw_current()
{
register int row, col;
printf( "\033)0" ); /* Special graphics in G1 */
printf( "\016" ); /* Lock in G1 (SO) */
for ( row = 0; row < MAX_ROWS; ++row ) {
for ( col = 0; col < MAX_COLS; ++col ) {
if ( display_table[row][col] ) {
move( row * 2 + ROW_OFFSET, col * 3 + COL_OFFSET );
printf( "\141\141\141" );
move( row * 2 + ROW_OFFSET + 1, col * 3 + COL_OFFSET );
printf( "\141\141\141" );
} else {
move( row * 2 + ROW_OFFSET, col * 3 + COL_OFFSET );
printf( " " ); /* erase splat */
move( row * 2 + ROW_OFFSET + 1, col * 3 + COL_OFFSET );
printf( " " ); /* erase splat */
}
}
pad();
}
printf( "\017" ); /* Lock in G0 (SI) */
fflush( stdout );
}
/*
* highlight
* Draw the cursor in the main display area.
*/
void
highlight( row, col, on )
unsigned int row, col;
bool on;
{
printf( "\033)0" ); /* Special graphics in G1 */
printf( "\016" ); /* Lock in G1 (SO) */
if ( on ) {
printf( "\033[7m" ); /* Reverse video cursor */
}
if ( display_table[row][col] ) {
move( row * 2 + ROW_OFFSET, col * 3 + COL_OFFSET );
printf( "\141\141\141" );
move( row * 2 + ROW_OFFSET + 1, col * 3 + COL_OFFSET );
printf( "\141\141\141" );
} else {
move( row * 2 + ROW_OFFSET, col * 3 + COL_OFFSET );
printf( " " ); /* erase splat */
move( row * 2 + ROW_OFFSET + 1, col * 3 + COL_OFFSET );
printf( " " ); /* erase splat */
}
pad();
printf( "\017" ); /* Lock in G0 (SI) */
printf( "\033[0m" ); /* normal video */
printf( "\b" ); /* Back up one spot */
fflush( stdout );
}
/*
* Clear_screen
*/
void
clear_screen()
{
printf( "\033[H\033[J" ); /* Clear screen. */
fflush( stdout );
}
/*
* move
*/
move( y, x )
int y, x;
{
printf( "\033[%d;%df", y, x );
}
/*
* Build_entry
* Convert the bit pattern used in the main display area into something
* that the vt220 can digest - namely sixels...
*/
void
build_entry( entry_no )
unsigned int entry_no;
{
register int row, col;
register unsigned int mask;
for ( col = 0; col < 8; ++col ) {
/* Top set of sixels */
mask = 0;
for ( row = 5; row >= 0; --row ) {
mask = mask << 1;
if ( display_table[row][col] )
mask |= 1;
}
font_table[entry_no][col] = mask + 077;
/* Bottom set of sixels */
mask = 0;
for ( row = 9; row >= 6; --row ) {
mask = mask << 1;
if ( display_table[row][col] )
mask |= 1;
}
font_table[entry_no][col+8] = mask + 077;
}
}
/*
* Extract_engry
* convert sixel representation into an array of bits.
*/
void
extract_entry( entry_no )
unsigned int entry_no;
{
register int row, col;
register unsigned int mask;
for ( col = 0; col < 8; ++col ) {
/* Top set of sixels */
mask = font_table[entry_no][col];
if ( mask >= 077 )
mask -= 077;
else
mask = 0; /* Bogus entry */
for ( row = 0; row <= 5; ++row ) {
display_table[row][col] = (bool)(mask & 0x0001);
mask = mask >> 1;
}
/* Bottom set of sixels */
mask = font_table[entry_no][col+8];
if ( mask >= 077 )
mask -= 077;
else
mask = 0;
for ( row = 6; row <= 9; ++row ) {
display_table[row][col] = (bool)(mask & 0x0001);
mask = mask >> 1;
}
}
}
/*
* Send_entry
* Emit the stuff used by the VT220 to load a character into the
* DRCS. We could, of course, send more than one entry at a time...
*/
void
send_entry( entry_no )
int entry_no;
{
register char *fp = font_table[entry_no];
printf( "\033P1;%d;1;0;0;0{ @%c%c%c%c%c%c%c%c/%c%c%c%c%c%c%c%c\033\\",
entry_no,
fp[ 0], fp[ 1], fp[ 2], fp[ 3], fp[ 4], fp[ 5], fp[ 6], fp[ 7],
fp[ 8], fp[ 9], fp[10], fp[11], fp[12], fp[13], fp[14], fp[15] );
}
/*
* Print_entry
* The terminal normally has G0 in GL. We don't want to change
* this, nor do we want to use GR. Sooooo send out the necessary
* magic for shifting in G2 temporarily for the character that we
* want to display.
*/
void
print_entry( entry_no, highlight )
register unsigned int entry_no;
bool highlight;
{
register int y, x;
y = entry_no & 0x07;
x = entry_no >> 3 & 0x1f;
entry_no += 32; /* Map up to G set */
move( y * 2 + TABLE_ROW, x * 2 + TABLE_COL );
if ( highlight )
printf( "\033[7m" );
printf( "\033* @" ); /* select DRCS into G2 */
printf( "\033N" ); /* select single shift */
printf( "%c", entry_no ); /* Draw the character */
if ( highlight )
printf( "\033[0m" );
}
/*
* Save_table
* Save a font table
*/
void
save_table( font_file )
FILE *font_file;
{
register char *fp;
register int i;
for ( i = 0; i < TOTAL_ENTRIES; ++i ) {
fp = font_table[i];
fprintf( font_file, "\033P1;%d;1;0;0;0{ @%c%c%c%c%c%c%c%c/%c%c%c%c%c%c%c%c\033\\\n",
i,
fp[ 0], fp[ 1], fp[ 2], fp[ 3], fp[ 4], fp[ 5], fp[ 6], fp[ 7],
fp[ 8], fp[ 9], fp[10], fp[11], fp[12], fp[13], fp[14], fp[15] );
}
}
/*
* Get_table
* Extract font table entries from a file
*/
void
get_table( font_file )
FILE *font_file;
{
char s[256];
register char *p;
char *fp;
int i;
register int j;
while( fgets( s, 255, font_file ) ) {
if ( strncmp( s, "\033P1;", 4 ) != 0 )
continue; /* Bogus line */
p = &s[4];
if ( sscanf( p, "%d", &i ) != 1 )
continue; /* Illegal entry number */
if ( i <= 0 || TOTAL_ENTRIES <= i )
continue; /* Bogues entry */
fp = font_table[i];
while ( *p && *p != '@' )
++p; /* Skip to font definition */
if ( ! *p++ )
continue; /* Skip @ */
for ( j = 0; *p && *p != '\033' && j < 16; ++j, ++p ) {
if ( *p == '/' ) {
j = 8;
++p;
}
fp[j] = *p;
}
send_entry( i );
}
}
/*
* Help
* Print out help information.
*/
void
help()
{
printf( "Font editor\n\n" );
printf( "F6 - Pixel on\n" );
printf( "F7 - Pixel off\n" );
printf( "F13 - Clear display area\n" );
printf( "HELP - This screen\n" );
printf( "FIND - Update font table\n" );
printf( "INSERT - Insert a blank row\n" );
printf( "REMOVE - Remove a row\n" );
printf( "SELECT - Select current font table entry\n" );
printf( "PREV - Move to previous font table entry\n" );
printf( "NEXT - Move to next font table entry\n" );
printf( "^D - Exit\n" );
printf( "\n\n\n\nPress any key to continue\n" );
}
/*
* Warning
* Issue a warning to the regarding the current status.
*/
void
warning( s )
char *s;
{
move( ERROR_ROW, ERROR_COL );
printf( "Warning: %s!\n", s );
move( ERROR_ROW+1, ERROR_COL );
printf( " Reissue command to override\n" );
}