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/*
** Copyright (C) 1991, 1997 Free Software Foundation, Inc.
**
** This file is part of TACK.
**
** TACK 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, or (at your option)
** any later version.
**
** TACK 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 TACK; see the file COPYING. If not, write to
** the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
** Boston, MA 02110-1301, USA
*/
/* screen formatting and I/O utility functions */
#include <tack.h>
#include <time.h>
MODULE_ID("$Id: output.c,v 1.14 2009/12/26 21:19:34 tom Exp $")
/* globals */
long char_sent; /* number of characters sent */
int char_count; /* counts characters */
int line_count; /* counts line feeds */
int expand_chars; /* length of expand() string */
int replace_mode; /* used to output replace mode padding */
int can_go_home; /* TRUE if we can fashion a home command */
int can_clear_screen; /* TRUE if we can somehow clear the screen */
int raw_characters_sent; /* Total output characters */
static int log_count; /* Number of characters on a log line */
/* translate mode default strings */
#define TM_carriage_return TM_string[0].value
#define TM_cursor_down TM_string[1].value
#define TM_scroll_forward TM_string[2].value
#define TM_newline TM_string[3].value
#define TM_cursor_left TM_string[4].value
#define TM_bell TM_string[5].value
#define TM_form_feed TM_string[6].value
#define TM_tab TM_string[7].value
struct default_string_list TM_string[TM_last] = {
{"cr", "\r", 0},
{"cud1", "\n", 0},
{"ind", "\n", 0},
{"nel", "\r\n", 0},
{"cub1", "\b", 0},
{"bel", "\007", 0},
{"ff", "\f", 0},
{"ht", "\t", 0}
};
static const char *c0[32] = {
"NUL", "SOH", "STX", "ETX", "EOT", "ENQ", "ACK",
"BEL", "BS", "HT", "LF", "VT", "FF", "CR", "SO", "SI",
"DLE", "DC1", "DC2", "DC3", "DC4", "NAK", "SYN", "ETB",
"CAN", "EM", "SUB", "ESC", "FS", "GS", "RS", "US"
};
static const char *c1[32] = {
"", "", "", "", "IND", "NEL", "SSA", "ESA",
"HTS", "HTJ", "VTS", "PLD", "PLU", "RI", "SS2", "SS3",
"DCS", "PU1", "PU2", "STS", "CCH", "MW", "SPA", "EPA",
"", "", "", "CSI", "ST", "OSC", "PM", "APC"
};
int
getnext(int mask)
{ /* get the next character without scan mode
conversion */
int ch;
unsigned char buf;
tc_putp(req_for_input);
fflush(stdout);
if (nodelay_read) {
while (1) {
ch = read(fileno(stdin), &buf, 1);
if (ch == -1)
return EOF;
if (ch == 1)
return buf;
}
}
ch = getchar();
if (ch == EOF)
return EOF;
return ch & mask;
}
int
getchp(int mask)
{ /* read a character with scan mode conversion */
if (scan_mode) {
tc_putp(req_for_input);
fflush(stdout);
return scan_key();
} else
return getnext(mask);
}
/*
** tc_putch(c)
**
** Output one character
*/
int
tc_putch(int c)
{
char_sent++;
raw_characters_sent++;
putchar(c);
if ((raw_characters_sent & 31) == 31) {
fflush(stdout);
}
if (log_fp) {
/* terminal output logging */
c = UChar(c);
if (c < 32) {
fprintf(log_fp, "<%s>", c0[c]);
log_count += 5;
} else
if (c < 127) {
fprintf(log_fp, "%c", c);
log_count += 1;
} else {
fprintf(log_fp, "<%02x>", c);
log_count += 4;
}
if (c == '\n' || log_count >= 80) {
fprintf(log_fp, "\n");
log_count = 0;
}
}
return (c);
}
/*
** tt_tputs(string, reps)
**
** Output a string with tputs() translation.
** Use this function inside timing tests.
*/
void
tt_tputs(const char *string, int reps)
{
int i;
if (string) {
for (i = 0; i < TT_MAX; i++) {
if (i >= ttp) {
tt_cap[i] = string;
tt_affected[i] = reps;
tt_count[i] = 1;
tt_delay[i] = msec_cost(string, reps);
ttp++;
break;
}
if (string == tt_cap[i] && reps == tt_affected[i]) {
tt_count[i]++;
tt_delay_used += tt_delay[i];
break;
}
}
(void) tputs(string, reps, tc_putch);
}
}
/*
** tt_putp(string)
**
** Output a string with tputs() translation.
** Use this function inside timing tests.
*/
void
tt_putp(const char *string)
{
tt_tputs(string, 1);
}
/*
** tt_putparm(string, reps, arg1, arg2)
**
** Send tt_tputs(tparm(string, args1, arg2), reps)
** Use this function inside timing tests.
*/
void
tt_putparm(
NCURSES_CONST char *string,
int reps,
int arg1,
int arg2)
{
int i;
if (string) {
for (i = 0; i < TT_MAX; i++) {
if (i >= ttp) {
tt_cap[i] = string;
tt_affected[i] = reps;
tt_count[i] = 1;
tt_delay[i] = msec_cost(string, reps);
ttp++;
break;
}
if (string == tt_cap[i] && reps == tt_affected[i]) {
tt_count[i]++;
tt_delay_used += tt_delay[i];
break;
}
}
(void) tputs(TPARM_2((NCURSES_CONST char *)string, arg1, arg2), reps, tc_putch);
}
}
/*
** tc_putp(string)
**
** Output a string with tputs() translation.
** Use this function instead of putp() so we can track
** the actual number of characters sent.
*/
int
tc_putp(const char *string)
{
return tputs(string, 1, tc_putch);
}
void
put_this(int c)
{ /* output one character (with padding) */
tc_putch(c);
if (char_padding && replace_mode)
tt_putp(char_padding);
}
void
put_cr(void)
{
if (translate_mode && carriage_return) {
tt_putp(carriage_return);
} else {
tt_putp(TM_carriage_return);
}
char_count = 0;
}
void
put_lf(void)
{ /* send a linefeed (only works in RAW or
CBREAK mode) */
if (translate_mode && cursor_down) {
tt_putp(cursor_down);
} else {
tt_putp(TM_cursor_down);
}
line_count++;
}
void
put_ind(void)
{ /* scroll forward (only works in RAW or
CBREAK mode) */
if (translate_mode && scroll_forward) {
tt_putp(scroll_forward);
} else {
tt_putp(TM_scroll_forward);
}
line_count++;
}
/*
** put_crlf()
**
** Send (nel) or <cr> <lf>
*/
void
put_crlf(void)
{
if (translate_mode && newline) {
tt_putp(newline);
} else {
tt_putp(TM_newline);
}
char_count = 0;
line_count++;
}
/*
** put_new_lines(count)
**
** Send a number of newlines. (nel)
*/
void
put_newlines(int n)
{
while (n-- > 0) {
put_crlf();
}
}
/*
** putchp(character)
**
** Send one character to the terminal.
** This function does translation of control characters.
*/
void
putchp(int c)
{
switch (c) {
case '\b':
if (translate_mode && cursor_left) {
tt_putp(cursor_left);
} else {
tt_putp(TM_cursor_left);
}
char_count--;
break;
case 7:
if (translate_mode && bell) {
tt_putp(bell);
} else {
tt_putp(TM_bell);
}
break;
case '\f':
if (translate_mode && form_feed) {
tt_putp(form_feed);
} else {
tt_putp(TM_form_feed);
}
char_count = 0;
line_count++;
break;
case '\n':
put_crlf();
break;
case '\r':
put_cr();
break;
case '\t':
if (translate_mode && tab) {
tt_putp(tab);
} else {
tt_putp(TM_tab);
}
char_count = ((char_count / 8) + 1) * 8;
break;
default:
put_this(c);
char_count++;
break;
}
}
void
put_str(const char *s)
{ /* send the string to the terminal */
for (; *s; putchp(*s++));
}
void
putln(const char *s)
{ /* output a string followed by a CR LF */
for (; *s; putchp(*s++));
put_crlf();
}
void
put_columns(const char *s, int len, int w)
{ /* put out s in column format */
int l;
if (char_count + w > columns) {
put_crlf();
}
l = char_count % w;
if (l) {
while (l < w) {
putchp(' ');
l++;
}
}
if (char_count && char_count + len >= columns) {
put_crlf();
}
l = char_count;
put_str(s);
char_count = l + len;
}
/*
** ptext(string)
**
** Output a string but do not assume the terminal will wrap to a
** new line. Break the line at a word boundary then send a CR LF.
** This is more esthetic on 40 column terminals.
*/
void
ptext(const char *s)
{
const char *t;
while (*s) {
for (t = s + 1; *t > ' '; t++);
if ((char_count != 0) && ((t - s) + char_count >= columns)) {
put_crlf();
while (*s == ' ')
s++;
}
while (s < t) {
putchp(*s++);
}
}
}
void
put_dec(char *f, int i)
{ /* print a line with a decimal number in it */
char tm[128];
sprintf(tm, f, i / 10, i % 10);
ptext(tm);
}
void
three_digit(char *tx, int i)
{ /* convert the decimal number to a string of
at least 3 digits */
if (i < 1000)
sprintf(tx, "%d.%d", i / 10, i % 10);
else
sprintf(tx, "%d", i / 10);
}
void
ptextln(const char *s)
{ /* print the text using ptext() then add a CR
LF */
ptext(s);
put_crlf();
}
static void
expand_one(int ch, char **v)
{ /* expand one character */
char *t = *v;
if (ch & 0x80) { /* dump it in octal (yuck) */
*t++ = '\\';
*t++ = (char) ('0' + ((ch >> 6) & 3));
*t++ = (char) ('0' + ((ch >> 3) & 7));
*t++ = (char) ('0' + (ch & 7));
expand_chars += 4;
} else if (ch == 127) { /* DEL */
*t++ = '^';
*t++ = '?';
expand_chars += 2;
} else if (ch >= ' ') {
*t++ = (char) ch;
expand_chars++;
} else { /* control characters */
*t++ = '^';
*t++ = (char) (ch + '@');
expand_chars += 2;
}
*v = t;
}
char *
expand(const char *s)
{ /* convert the string to printable form */
static char buf[4096];
char *t, *v;
int ch;
if (magic_cookie_glitch <= 0 && exit_attribute_mode) {
v = enter_reverse_mode;
} else {
v = NULL;
}
expand_chars = 0;
t = buf;
if (s) {
for (; (ch = *s); s++) {
if ((ch & 0x80) && v) { /* print it in reverse video
mode */
strcpy(t, liberated(TPARM_0(v)));
for (; *t; t++);
expand_one(ch & 0x7f, &t);
strcpy(t, liberated(TPARM_0(exit_attribute_mode)));
for (; *t; t++);
} else {
expand_one(ch, &t);
}
}
}
*t = '\0';
return buf;
}
char *
print_expand(char *s)
{ /* convert the string to 7-bit printable form */
static char buf[4096];
char *t;
int ch;
expand_chars = 0;
t = buf;
if (s) {
for (; (ch = *s); s++) {
expand_one(ch, &t);
}
}
*t = '\0';
return buf;
}
char *
expand_to(char *s, int l)
{ /* expand s to length l */
char *t;
for (s = t = expand(s); *t; t++);
for (; expand_chars < l; expand_chars++) {
*t++ = ' ';
}
*t = '\0';
return s;
}
char *
hex_expand_to(char *s, int l)
{ /* expand s to length l in hex */
static char buf[4096];
char *t;
for (t = buf; *s; s++) {
sprintf(t, "%02X ", UChar(*s));
t += 3;
if (t - buf > (int) sizeof(buf) - 4) {
break;
}
}
for (; t - buf < l;) {
*t++ = ' ';
}
*t = '\0';
expand_chars = t - buf;
return buf;
}
char *
expand_command(const char *c)
{ /* expand an ANSI escape sequence */
static char buf[256];
int i, j, ch;
char *s;
s = buf;
for (i = FALSE; (ch = UChar(*c)) != 0; c++) {
if (i) {
*s++ = ' ';
}
i = TRUE;
if (ch < 32) {
j = UChar(c[1]);
if (ch == '\033' && j >= '@' && j <= '_') {
ch = j - '@';
c++;
for (j = 0; (*s = c1[ch][j++]); s++);
} else
for (j = 0; (*s = c0[ch][j++]); s++);
} else {
*s++ = (char) ch;
j = UChar(c[1]);
if (ch >= '0' && ch <= '9' &&
j >= '0' && j <= '9') {
i = FALSE;
}
}
}
*s = '\0';
return buf;
}
/*
** go_home()
**
** Move the cursor to the home position
*/
void
go_home(void)
{
int i;
if (cursor_home)
tt_putp(cursor_home);
else if (cursor_address)
tt_putparm(cursor_address, lines, 0, 0);
else if (row_address) { /* use (vpa) */
put_cr();
tt_putparm(row_address, 1, 0, 0);
} else if (cursor_up && cursor_to_ll) {
tt_putp(cursor_to_ll);
for (i = 1; i < lines; i++) {
tt_putp(cursor_up);
}
} else {
can_go_home = FALSE;
return;
}
char_count = line_count = 0;
can_go_home = TRUE;
}
void
home_down(void)
{ /* move the cursor to the lower left hand
corner */
int i;
if (cursor_to_ll)
tt_putp(cursor_to_ll);
else if (cursor_address)
tt_putparm(cursor_address, lines, lines - 1, 0);
else if (row_address) { /* use (vpa) */
put_cr();
tt_putparm(row_address, 1, lines - 1, 0);
} else if (cursor_down && cursor_home) {
tt_putp(cursor_home);
for (i = 1; i < lines; i++)
tt_putp(cursor_down);
} else
return;
char_count = 0;
line_count = lines - 1;
}
void
put_clear(void)
{ /* clear the screen */
int i;
if (clear_screen)
tt_tputs(clear_screen, lines);
else if (clr_eos && can_go_home) {
go_home();
tt_tputs(clr_eos, lines);
} else if (scroll_forward && !over_strike && (can_go_home || cursor_up)) {
/* clear the screen by scrolling */
put_cr();
if (cursor_to_ll) {
tt_putp(cursor_to_ll);
} else if (cursor_address) {
tt_putparm(cursor_address, lines, lines - 1, 0);
} else if (row_address) {
tt_putparm(row_address, 1, lines - 1, 0);
} else {
for (i = 1; i < lines; i++) {
tt_putp(scroll_forward);
}
}
for (i = 1; i < lines; i++) {
tt_putp(scroll_forward);
}
if (can_go_home) {
go_home();
} else {
for (i = 1; i < lines; i++) {
tt_putp(cursor_up);
}
}
} else {
can_clear_screen = FALSE;
return;
}
char_count = line_count = 0;
can_clear_screen = TRUE;
}
/*
** wait_here()
**
** read one character from the input stream
** If the terminal is not in RAW mode then this function will
** wait for a <cr> or <lf>.
*/
int
wait_here(void)
{
char ch, cc[64];
char message[16];
int i, j;
for (i = 0; i < (int) sizeof(cc); i++) {
cc[i] = ch = (char) getchp(STRIP_PARITY);
if (ch == '\r' || ch == '\n') {
put_crlf();
char_sent = 0;
return cc[i ? i - 1 : 0];
}
if (ch >= ' ') {
if (stty_query(TTY_CHAR_MODE)) {
put_crlf();
char_sent = 0;
return ch;
}
continue;
}
if (ch == 023) { /* Control S */
/* ignore control S, but tell me about it */
while (ch == 023 || ch == 021) {
ch = (char) getchp(STRIP_PARITY);
if (ch == EOF)
break;
if (i + 1 < (int) sizeof(cc))
cc[++i] = ch;
}
put_str("\nThe terminal sent a ^S -");
for (j = 0; j <= i; j++) {
sprintf(message, " %02X", cc[j] & 0xFF);
put_str(message);
}
put_crlf();
i = -1;
} else if (ch != 021) { /* Not Control Q */
/* could be abort character */
spin_flush();
if (tty_can_sync == SYNC_TESTED) {
(void) tty_sync_error();
} else {
put_str("\n? ");
}
}
}
return '?';
}
/*
** read_string(buffer, length)
**
** Read a string of characters from the input stream.
*/
void
read_string(
char *buf,
int length)
{
int ch, i;
for (i = 0; i < length - 1; ) {
ch = getchp(STRIP_PARITY);
if (ch == '\r' || ch == '\n' || ch == EOF) {
break;
}
if (ch == '\b' || ch == 127) {
if (i) {
putchp('\b');
putchp(' ');
putchp('\b');
i--;
}
} else {
buf[i++] = (char) ch;
putchp(ch);
}
}
buf[i] = '\0';
put_crlf();
char_sent = 0;
}
/*
** maybe_wait(lines)
**
** wait if near the end of the screen, then clear screen
*/
void
maybe_wait(int n)
{
if (line_count + n >= lines) {
if (char_sent != 0) {
ptext("Go? ");
(void) wait_here();
}
put_clear();
} else {
put_crlf();
}
}
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