extern int more_main(int argc, char **argv)
{
int c, lines, input = 0;
int please_display_more_prompt;
struct stat st;
FILE *file;
int len, page_height;
#if defined BB_FEATURE_AUTOWIDTH && defined BB_FEATURE_USE_TERMIOS
struct winsize win = { 0, 0, 0, 0 };
#endif
argc--;
argv++;
#ifdef BB_FEATURE_USE_TERMIOS
cin = fopen("/dev/tty", "r");
if (!cin)
cin = fopen("/dev/console", "r");
getTermSettings(fileno(cin), &initial_settings);
new_settings = initial_settings;
new_settings.c_cc[VMIN] = 1;
new_settings.c_cc[VTIME] = 0;
new_settings.c_lflag &= ~ICANON;
new_settings.c_lflag &= ~ECHO;
setTermSettings(fileno(cin), &new_settings);
# ifdef BB_FEATURE_AUTOWIDTH
ioctl(fileno(stdout), TIOCGWINSZ, &win);
if (win.ws_row > 4)
terminal_height = win.ws_row - 2;
if (win.ws_col > 0)
terminal_width = win.ws_col - 1;
# endif
(void) signal(SIGINT, gotsig);
(void) signal(SIGQUIT, gotsig);
(void) signal(SIGTERM, gotsig);
#endif
do {
if (argc == 0) {
file = stdin;
} else
file = xfopen(*argv, "r");
fstat(fileno(file), &st);
len=0;
lines = 0;
page_height = terminal_height;
please_display_more_prompt = 0;
while ((c = getc(file)) != EOF) {
if (please_display_more_prompt) {
len = printf("--More-- ");
if (file != stdin) {
#if _FILE_OFFSET_BITS == 64
len += printf("(%d%% of %lld bytes)",
#else
len += printf("(%d%% of %ld bytes)",
#endif
(int) (100 *
((double) ftell(file) /
(double) st.st_size)),
st.st_size);
}
len += printf("%s",
#ifdef BB_FEATURE_USE_TERMIOS
""
#else
"\n"
#endif
);
fflush(stdout);
/*
* We've just displayed the "--More--" prompt, so now we need
* to get input from the user.
*/
#ifdef BB_FEATURE_USE_TERMIOS
input = getc(cin);
#else
input = getc(stdin);
#endif
#ifdef BB_FEATURE_USE_TERMIOS
/* Erase the "More" message */
while (--len >= 0)
putc('\b', stdout);
while (++len <= terminal_width)
putc(' ', stdout);
while (--len >= 0)
putc('\b', stdout);
fflush(stdout);
#endif
len=0;
lines = 0;
page_height = terminal_height;
please_display_more_prompt = 0;
}
/*
* There are two input streams to worry about here:
*
* c : the character we are reading from the file being "mored"
* input : a character received from the keyboard
*
* If we hit a newline in the _file_ stream, we want to test and
* see if any characters have been hit in the _input_ stream. This
* allows the user to quit while in the middle of a file.
*/
if (c == '\n') {
switch (input) {
case 'q':
goto end;
case '\n':
/* increment by just one line if we are at
* the end of this line*/
please_display_more_prompt = 1;
break;
}
/* Adjust the terminal height for any overlap, so that
* no lines get lost off the top. */
if (len >= terminal_width) {
div_t result = div( len, terminal_width);
if (result.quot) {
if (result.rem)
page_height-=result.quot;
else
page_height-=(result.quot-1);
}
}
if (++lines >= page_height) {
please_display_more_prompt = 1;
}
len=0;
}
/*
* If we just read a newline from the file being 'mored' and any
* key other than a return is hit, scroll by one page
*/
putc(c, stdout);
len++;
}
fclose(file);
fflush(stdout);
argv++;
} while (--argc > 0);
int more_main(int argc UNUSED_PARAM, char **argv)
{
int c = c; /* for compiler */
int lines;
int input = 0;
int spaces = 0;
int please_display_more_prompt;
struct stat st;
FILE *file;
FILE *cin;
int len;
unsigned terminal_width;
unsigned terminal_height;
INIT_G();
argv++;
/* Another popular pager, most, detects when stdout
* is not a tty and turns into cat. This makes sense. */
if (!isatty(STDOUT_FILENO))
return bb_cat(argv);
cin = fopen_for_read(CURRENT_TTY);
if (!cin)
return bb_cat(argv);
if (ENABLE_FEATURE_USE_TERMIOS) {
cin_fileno = fileno(cin);
getTermSettings(cin_fileno, &initial_settings);
new_settings = initial_settings;
new_settings.c_lflag &= ~(ICANON | ECHO);
new_settings.c_cc[VMIN] = 1;
new_settings.c_cc[VTIME] = 0;
setTermSettings(cin_fileno, &new_settings);
bb_signals(0
+ (1 << SIGINT)
+ (1 << SIGQUIT)
+ (1 << SIGTERM)
, gotsig);
}
do {
file = stdin;
if (*argv) {
file = fopen_or_warn(*argv, "r");
if (!file)
continue;
}
st.st_size = 0;
fstat(fileno(file), &st);
please_display_more_prompt = 0;
/* never returns w, h <= 1 */
get_terminal_width_height(fileno(cin), &terminal_width, &terminal_height);
terminal_height -= 1;
len = 0;
lines = 0;
while (spaces || (c = getc(file)) != EOF) {
int wrap;
if (spaces)
spaces--;
loop_top:
if (input != 'r' && please_display_more_prompt) {
len = printf("--More-- ");
if (st.st_size != 0) {
uoff_t d = (uoff_t)st.st_size / 100;
if (d == 0)
d = 1;
len += printf("(%u%% of %"OFF_FMT"u bytes)",
(int) ((uoff_t)ftello(file) / d),
st.st_size);
}
fflush_all();
/*
* We've just displayed the "--More--" prompt, so now we need
* to get input from the user.
*/
for (;;) {
input = getc(cin);
input = tolower(input);
if (!ENABLE_FEATURE_USE_TERMIOS)
printf("\033[A"); /* cursor up */
/* Erase the last message */
printf("\r%*s\r", len, "");
/* Due to various multibyte escape
* sequences, it's not ok to accept
* any input as a command to scroll
* the screen. We only allow known
* commands, else we show help msg. */
if (input == ' ' || input == '\n' || input == 'q' || input == 'r')
break;
len = printf("(Enter:next line Space:next page Q:quit R:show the rest)");
}
len = 0;
lines = 0;
please_display_more_prompt = 0;
if (input == 'q')
goto end;
/* The user may have resized the terminal.
* Re-read the dimensions. */
if (ENABLE_FEATURE_USE_TERMIOS) {
get_terminal_width_height(cin_fileno, &terminal_width, &terminal_height);
terminal_height -= 1;
}
}
/* Crudely convert tabs into spaces, which are
* a bajillion times easier to deal with. */
if (c == '\t') {
spaces = ((unsigned)~len) % CONVERTED_TAB_SIZE;
c = ' ';
}
/*
* There are two input streams to worry about here:
*
* c : the character we are reading from the file being "mored"
* input: a character received from the keyboard
*
* If we hit a newline in the _file_ stream, we want to test and
* see if any characters have been hit in the _input_ stream. This
* allows the user to quit while in the middle of a file.
*/
wrap = (++len > terminal_width);
if (c == '\n' || wrap) {
/* Then outputting this character
* will move us to a new line. */
if (++lines >= terminal_height || input == '\n')
please_display_more_prompt = 1;
len = 0;
}
if (c != '\n' && wrap) {
/* Then outputting this will also put a character on
* the beginning of that new line. Thus we first want to
* display the prompt (if any), so we skip the putchar()
* and go back to the top of the loop, without reading
* a new character. */
putchar('\n');
goto loop_top;
}
/* My small mind cannot fathom backspaces and UTF-8 */
putchar(c);
die_if_ferror_stdout(); /* if tty was destroyed (closed xterm, etc) */
}
fclose(file);
fflush_all();
} while (*argv && *++argv);
end:
setTermSettings(cin_fileno, &initial_settings);
return 0;
}
int cmdedit_read_input(char *prompt, char command[BUFSIZ])
{
int break_out = 0;
int lastWasTab = FALSE;
unsigned char c;
unsigned int ic;
#if ENABLE_FEATURE_COMMAND_EDITING_VI
unsigned int prevc;
int vi_cmdmode = 0;
#endif
/* prepare before init handlers */
cmdedit_y = 0; /* quasireal y, not true work if line > xt*yt */
len = 0;
command_ps = command;
getTermSettings(0, (void *) &initial_settings);
memcpy(&new_settings, &initial_settings, sizeof(struct termios));
new_settings.c_lflag &= ~ICANON; /* unbuffered input */
/* Turn off echoing and CTRL-C, so we can trap it */
new_settings.c_lflag &= ~(ECHO | ECHONL | ISIG);
/* Hmm, in linux c_cc[] not parsed if set ~ICANON */
new_settings.c_cc[VMIN] = 1;
new_settings.c_cc[VTIME] = 0;
/* Turn off CTRL-C, so we can trap it */
# ifndef _POSIX_VDISABLE
# define _POSIX_VDISABLE '\0'
# endif
new_settings.c_cc[VINTR] = _POSIX_VDISABLE;
command[0] = 0;
setTermSettings(0, (void *) &new_settings);
handlers_sets |= SET_RESET_TERM;
/* Now initialize things */
cmdedit_init();
/* Print out the command prompt */
parse_prompt(prompt);
while (1) {
fflush(stdout); /* buffered out to fast */
if (safe_read(0, &c, 1) < 1)
/* if we can't read input then exit */
goto prepare_to_die;
ic = c;
#if ENABLE_FEATURE_COMMAND_EDITING_VI
newdelflag = 1;
if (vi_cmdmode)
ic |= vbit;
#endif
switch (ic) {
case '\n':
case '\r':
vi_case( case '\n'|vbit: )
vi_case( case '\r'|vbit: )
/* Enter */
goto_new_line();
break_out = 1;
break;
case CNTRL('A'):
vi_case( case '0'|vbit: )
/* Control-a -- Beginning of line */
input_backward(cursor);
break;
case CNTRL('B'):
vi_case( case 'h'|vbit: )
vi_case( case '\b'|vbit: )
vi_case( case DEL|vbit: )
/* Control-b -- Move back one character */
input_backward(1);
break;
case CNTRL('C'):
vi_case( case CNTRL('C')|vbit: )
/* Control-c -- stop gathering input */
goto_new_line();
#if !ENABLE_ASH
command[0] = 0;
len = 0;
lastWasTab = FALSE;
put_prompt();
#else
len = 0;
break_out = -1; /* to control traps */
#endif
break;
case CNTRL('D'):
/* Control-d -- Delete one character, or exit
* if the len=0 and no chars to delete */
if (len == 0) {
errno = 0;
prepare_to_die:
#if !ENABLE_ASH
printf("exit");
goto_new_line();
/* cmdedit_reset_term() called in atexit */
exit(EXIT_SUCCESS);
#else
/* to control stopped jobs */
len = break_out = -1;
break;
#endif
} else {
input_delete(0);
}
break;
case CNTRL('E'):
vi_case( case '$'|vbit: )
/* Control-e -- End of line */
input_end();
break;
case CNTRL('F'):
vi_case( case 'l'|vbit: )
vi_case( case ' '|vbit: )
/* Control-f -- Move forward one character */
input_forward();
break;
case '\b':
case DEL:
/* Control-h and DEL */
input_backspace();
break;
case '\t':
#if ENABLE_FEATURE_COMMAND_TAB_COMPLETION
input_tab(&lastWasTab);
#endif
break;
case CNTRL('K'):
/* Control-k -- clear to end of line */
command[cursor] = 0;
len = cursor;
printf("\033[J");
break;
case CNTRL('L'):
vi_case( case CNTRL('L')|vbit: )
/* Control-l -- clear screen */
printf("\033[H");
redraw(0, len - cursor);
break;
#if MAX_HISTORY > 0
case CNTRL('N'):
vi_case( case CNTRL('N')|vbit: )
vi_case( case 'j'|vbit: )
/* Control-n -- Get next command in history */
if (get_next_history())
goto rewrite_line;
break;
case CNTRL('P'):
vi_case( case CNTRL('P')|vbit: )
vi_case( case 'k'|vbit: )
/* Control-p -- Get previous command from history */
if (cur_history > 0) {
get_previous_history();
goto rewrite_line;
} else {
beep();
}
break;
#endif
case CNTRL('U'):
vi_case( case CNTRL('U')|vbit: )
/* Control-U -- Clear line before cursor */
if (cursor) {
strcpy(command, command + cursor);
redraw(cmdedit_y, len -= cursor);
}
break;
case CNTRL('W'):
vi_case( case CNTRL('W')|vbit: )
/* Control-W -- Remove the last word */
while (cursor > 0 && isspace(command[cursor-1]))
input_backspace();
while (cursor > 0 &&!isspace(command[cursor-1]))
input_backspace();
break;
#if ENABLE_FEATURE_COMMAND_EDITING_VI
case 'i'|vbit:
vi_cmdmode = 0;
break;
case 'I'|vbit:
input_backward(cursor);
vi_cmdmode = 0;
break;
case 'a'|vbit:
input_forward();
vi_cmdmode = 0;
break;
case 'A'|vbit:
input_end();
vi_cmdmode = 0;
break;
case 'x'|vbit:
input_delete(1);
break;
case 'X'|vbit:
if (cursor > 0) {
input_backward(1);
input_delete(1);
}
break;
case 'W'|vbit:
vi_Word_motion(command, 1);
break;
case 'w'|vbit:
vi_word_motion(command, 1);
break;
case 'E'|vbit:
vi_End_motion(command);
break;
case 'e'|vbit:
vi_end_motion(command);
break;
case 'B'|vbit:
vi_Back_motion(command);
break;
case 'b'|vbit:
vi_back_motion(command);
break;
case 'C'|vbit:
vi_cmdmode = 0;
/* fall through */
case 'D'|vbit:
goto clear_to_eol;
case 'c'|vbit:
vi_cmdmode = 0;
/* fall through */
case 'd'|vbit: {
int nc, sc;
sc = cursor;
prevc = ic;
if (safe_read(0, &c, 1) < 1)
goto prepare_to_die;
if (c == (prevc & 0xff)) {
/* "cc", "dd" */
input_backward(cursor);
goto clear_to_eol;
break;
}
switch (c) {
case 'w':
case 'W':
case 'e':
case 'E':
switch (c) {
case 'w': /* "dw", "cw" */
vi_word_motion(command, vi_cmdmode);
break;
case 'W': /* 'dW', 'cW' */
vi_Word_motion(command, vi_cmdmode);
break;
case 'e': /* 'de', 'ce' */
vi_end_motion(command);
input_forward();
break;
case 'E': /* 'dE', 'cE' */
vi_End_motion(command);
input_forward();
break;
}
nc = cursor;
input_backward(cursor - sc);
while (nc-- > cursor)
input_delete(1);
break;
case 'b': /* "db", "cb" */
case 'B': /* implemented as B */
if (c == 'b')
vi_back_motion(command);
else
vi_Back_motion(command);
while (sc-- > cursor)
input_delete(1);
break;
case ' ': /* "d ", "c " */
input_delete(1);
break;
case '$': /* "d$", "c$" */
clear_to_eol:
while (cursor < len)
input_delete(1);
break;
}
break;
}
case 'p'|vbit:
input_forward();
/* fallthrough */
case 'P'|vbit:
put();
break;
case 'r'|vbit:
if (safe_read(0, &c, 1) < 1)
goto prepare_to_die;
if (c == 0)
beep();
else {
*(command + cursor) = c;
putchar(c);
putchar('\b');
}
break;
#endif /* FEATURE_COMMAND_EDITING_VI */
case ESC:
#if ENABLE_FEATURE_COMMAND_EDITING_VI
if (vi_mode) {
/* ESC: insert mode --> command mode */
vi_cmdmode = 1;
input_backward(1);
break;
}
#endif
/* escape sequence follows */
if (safe_read(0, &c, 1) < 1)
goto prepare_to_die;
/* different vt100 emulations */
if (c == '[' || c == 'O') {
vi_case( case '['|vbit: )
vi_case( case 'O'|vbit: )
if (safe_read(0, &c, 1) < 1)
goto prepare_to_die;
}
if (c >= '1' && c <= '9') {
unsigned char dummy;
if (safe_read(0, &dummy, 1) < 1)
goto prepare_to_die;
if (dummy != '~')
c = 0;
}
switch (c) {
#if ENABLE_FEATURE_COMMAND_TAB_COMPLETION
case '\t': /* Alt-Tab */
input_tab(&lastWasTab);
break;
#endif
#if MAX_HISTORY > 0
case 'A':
/* Up Arrow -- Get previous command from history */
if (cur_history > 0) {
get_previous_history();
goto rewrite_line;
} else {
beep();
}
break;
case 'B':
/* Down Arrow -- Get next command in history */
if (!get_next_history())
break;
/* Rewrite the line with the selected history item */
rewrite_line:
/* change command */
len = strlen(strcpy(command, history[cur_history]));
/* redraw and go to eol (bol, in vi */
#if ENABLE_FEATURE_COMMAND_EDITING_VI
redraw(cmdedit_y, vi_mode ? 9999:0);
#else
redraw(cmdedit_y, 0);
#endif
break;
#endif
case 'C':
/* Right Arrow -- Move forward one character */
input_forward();
break;
case 'D':
/* Left Arrow -- Move back one character */
input_backward(1);
break;
case '3':
/* Delete */
input_delete(0);
break;
case '1':
case 'H':
/* <Home> */
input_backward(cursor);
break;
case '4':
case 'F':
/* <End> */
input_end();
break;
default:
c = 0;
beep();
}
break;
default: /* If it's regular input, do the normal thing */
#if ENABLE_FEATURE_NONPRINTABLE_INVERSE_PUT
/* Control-V -- Add non-printable symbol */
if (c == CNTRL('V')) {
if (safe_read(0, &c, 1) < 1)
goto prepare_to_die;
if (c == 0) {
beep();
break;
}
} else
#endif
{
#if ENABLE_FEATURE_COMMAND_EDITING_VI
if (vi_cmdmode) /* don't self-insert */
break;
#endif
if (!Isprint(c)) /* Skip non-printable characters */
break;
}
if (len >= (BUFSIZ - 2)) /* Need to leave space for enter */
break;
len++;
if (cursor == (len - 1)) { /* Append if at the end of the line */
*(command + cursor) = c;
*(command + cursor + 1) = 0;
cmdedit_set_out_char(0);
} else { /* Insert otherwise */
int sc = cursor;
memmove(command + sc + 1, command + sc, len - sc);
*(command + sc) = c;
sc++;
/* rewrite from cursor */
input_end();
/* to prev x pos + 1 */
input_backward(cursor - sc);
}
break;
}
if (break_out) /* Enter is the command terminator, no more input. */
break;
if (c != '\t')
lastWasTab = FALSE;
}
/* Returns:
* -1 on read errors or EOF, or on bare Ctrl-D.
* 0 on ctrl-C,
* >0 length of input string, including terminating '\n'
*/
int read_line_input(const char* prompt, char* command, int maxsize, line_input_t *st)
{
int lastWasTab = FALSE;
unsigned int ic;
unsigned char c;
smallint break_out = 0;
#if ENABLE_FEATURE_EDITING_VI
smallint vi_cmdmode = 0;
smalluint prevc;
#endif
if (maxsize > MAX_LINELEN)
maxsize = MAX_LINELEN;
/* With null flags, no other fields are ever used */
state = st ? st : (line_input_t*) &const_int_0;
#if ENABLE_FEATURE_EDITING_SAVEHISTORY
if ((state->flags & SAVE_HISTORY) && state->hist_file)
load_history(state->hist_file);
#endif
/* prepare before init handlers */
cmdedit_y = 0; /* quasireal y, not true if line > xt*yt */
command_len = 0;
command_ps = command;
command[0] = '\0';
getTermSettings(0, (void *) &initial_settings);
memcpy(&new_settings, &initial_settings, sizeof(new_settings));
new_settings.c_lflag &= ~ICANON; /* unbuffered input */
/* Turn off echoing and CTRL-C, so we can trap it */
new_settings.c_lflag &= ~(ECHO | ECHONL | ISIG);
/* Hmm, in linux c_cc[] is not parsed if ICANON is off */
new_settings.c_cc[VMIN] = 1;
new_settings.c_cc[VTIME] = 0;
/* Turn off CTRL-C, so we can trap it */
#ifndef _POSIX_VDISABLE
#define _POSIX_VDISABLE '\0'
#endif
new_settings.c_cc[VINTR] = _POSIX_VDISABLE;
setTermSettings(0, (void *) &new_settings);
/* Now initialize things */
previous_SIGWINCH_handler = signal(SIGWINCH, win_changed);
win_changed(0); /* do initial resizing */
#if ENABLE_FEATURE_GETUSERNAME_AND_HOMEDIR
{
struct passwd *entry;
entry = getpwuid(geteuid());
if (entry) {
/* If we enter read_line_input for the Nth time,
* they may be already allocated! Need to free. */
free(user_buf);
if (home_pwd_buf != null_str)
free(home_pwd_buf);
user_buf = xstrdup(entry->pw_name);
home_pwd_buf = xstrdup(entry->pw_dir);
/* They are not freed on exit (too small to bother) */
}
}
#endif
/* Print out the command prompt */
parse_prompt(prompt);
while (1) {
fflush(stdout);
if (safe_read(0, &c, 1) < 1) {
/* if we can't read input then exit */
goto prepare_to_die;
}
ic = c;
#if ENABLE_FEATURE_EDITING_VI
newdelflag = 1;
if (vi_cmdmode)
ic |= vbit;
#endif
switch (ic) {
case '\n':
case '\r':
vi_case('\n'|vbit:)
vi_case('\r'|vbit:)
/* Enter */
goto_new_line();
break_out = 1;
break;
#if ENABLE_FEATURE_EDITING_FANCY_KEYS
case CTRL('A'):
vi_case('0'|vbit:)
/* Control-a -- Beginning of line */
input_backward(cursor);
break;
case CTRL('B'):
vi_case('h'|vbit:)
vi_case('\b'|vbit:)
vi_case('\x7f'|vbit:) /* DEL */
/* Control-b -- Move back one character */
input_backward(1);
break;
#endif
case CTRL('C'):
vi_case(CTRL('C')|vbit:)
/* Control-c -- stop gathering input */
goto_new_line();
command_len = 0;
break_out = -1; /* "do not append '\n'" */
break;
case CTRL('D'):
/* Control-d -- Delete one character, or exit
* if the len=0 and no chars to delete */
if (command_len == 0) {
errno = 0;
prepare_to_die:
/* to control stopped jobs */
break_out = command_len = -1;
break;
}
input_delete(0);
break;
#if ENABLE_FEATURE_EDITING_FANCY_KEYS
case CTRL('E'):
vi_case('$'|vbit:)
/* Control-e -- End of line */
input_end();
break;
case CTRL('F'):
vi_case('l'|vbit:)
vi_case(' '|vbit:)
/* Control-f -- Move forward one character */
input_forward();
break;
#endif
case '\b':
case '\x7f': /* DEL */
/* Control-h and DEL */
input_backspace();
break;
case '\t':
input_tab(&lastWasTab);
break;
#if ENABLE_FEATURE_EDITING_FANCY_KEYS
case CTRL('K'):
/* Control-k -- clear to end of line */
command[cursor] = 0;
command_len = cursor;
printf("\033[J");
break;
case CTRL('L'):
vi_case(CTRL('L')|vbit:)
/* Control-l -- clear screen */
printf("\033[H");
redraw(0, command_len - cursor);
break;
#endif
#if MAX_HISTORY > 0
case CTRL('N'):
vi_case(CTRL('N')|vbit:)
vi_case('j'|vbit:)
/* Control-n -- Get next command in history */
if (get_next_history())
goto rewrite_line;
break;
case CTRL('P'):
vi_case(CTRL('P')|vbit:)
vi_case('k'|vbit:)
/* Control-p -- Get previous command from history */
if ((state->flags & DO_HISTORY) && state->cur_history > 0) {
get_previous_history();
goto rewrite_line;
}
beep();
break;
#endif
#if ENABLE_FEATURE_EDITING_FANCY_KEYS
case CTRL('U'):
vi_case(CTRL('U')|vbit:)
/* Control-U -- Clear line before cursor */
if (cursor) {
strcpy(command, command + cursor);
command_len -= cursor;
redraw(cmdedit_y, command_len);
}
break;
#endif
case CTRL('W'):
vi_case(CTRL('W')|vbit:)
/* Control-W -- Remove the last word */
while (cursor > 0 && isspace(command[cursor-1]))
input_backspace();
while (cursor > 0 && !isspace(command[cursor-1]))
input_backspace();
break;
#if ENABLE_FEATURE_EDITING_VI
case 'i'|vbit:
vi_cmdmode = 0;
break;
case 'I'|vbit:
input_backward(cursor);
vi_cmdmode = 0;
break;
case 'a'|vbit:
input_forward();
vi_cmdmode = 0;
break;
case 'A'|vbit:
input_end();
vi_cmdmode = 0;
break;
case 'x'|vbit:
input_delete(1);
break;
case 'X'|vbit:
if (cursor > 0) {
input_backward(1);
input_delete(1);
}
break;
case 'W'|vbit:
vi_Word_motion(command, 1);
break;
case 'w'|vbit:
vi_word_motion(command, 1);
break;
case 'E'|vbit:
vi_End_motion(command);
break;
case 'e'|vbit:
vi_end_motion(command);
break;
case 'B'|vbit:
vi_Back_motion(command);
break;
case 'b'|vbit:
vi_back_motion(command);
break;
case 'C'|vbit:
vi_cmdmode = 0;
/* fall through */
case 'D'|vbit:
goto clear_to_eol;
case 'c'|vbit:
vi_cmdmode = 0;
/* fall through */
case 'd'|vbit: {
int nc, sc;
sc = cursor;
prevc = ic;
if (safe_read(0, &c, 1) < 1)
goto prepare_to_die;
if (c == (prevc & 0xff)) {
/* "cc", "dd" */
input_backward(cursor);
goto clear_to_eol;
break;
}
switch (c) {
case 'w':
case 'W':
case 'e':
case 'E':
switch (c) {
case 'w': /* "dw", "cw" */
vi_word_motion(command, vi_cmdmode);
break;
case 'W': /* 'dW', 'cW' */
vi_Word_motion(command, vi_cmdmode);
break;
case 'e': /* 'de', 'ce' */
vi_end_motion(command);
input_forward();
break;
case 'E': /* 'dE', 'cE' */
vi_End_motion(command);
input_forward();
break;
}
nc = cursor;
input_backward(cursor - sc);
while (nc-- > cursor)
input_delete(1);
break;
case 'b': /* "db", "cb" */
case 'B': /* implemented as B */
if (c == 'b')
vi_back_motion(command);
else
vi_Back_motion(command);
while (sc-- > cursor)
input_delete(1);
break;
case ' ': /* "d ", "c " */
input_delete(1);
break;
case '$': /* "d$", "c$" */
clear_to_eol:
while (cursor < command_len)
input_delete(1);
break;
}
break;
}
case 'p'|vbit:
input_forward();
/* fallthrough */
case 'P'|vbit:
put();
break;
case 'r'|vbit:
if (safe_read(0, &c, 1) < 1)
goto prepare_to_die;
if (c == 0)
beep();
else {
*(command + cursor) = c;
putchar(c);
putchar('\b');
}
break;
#endif /* FEATURE_COMMAND_EDITING_VI */
case '\x1b': /* ESC */
#if ENABLE_FEATURE_EDITING_VI
if (state->flags & VI_MODE) {
/* ESC: insert mode --> command mode */
vi_cmdmode = 1;
input_backward(1);
break;
}
#endif
/* escape sequence follows */
if (safe_read(0, &c, 1) < 1)
goto prepare_to_die;
/* different vt100 emulations */
if (c == '[' || c == 'O') {
vi_case('['|vbit:)
vi_case('O'|vbit:)
if (safe_read(0, &c, 1) < 1)
goto prepare_to_die;
}
if (c >= '1' && c <= '9') {
unsigned char dummy;
if (safe_read(0, &dummy, 1) < 1)
goto prepare_to_die;
if (dummy != '~')
c = '\0';
}
switch (c) {
#if ENABLE_FEATURE_TAB_COMPLETION
case '\t': /* Alt-Tab */
input_tab(&lastWasTab);
break;
#endif
#if MAX_HISTORY > 0
case 'A':
/* Up Arrow -- Get previous command from history */
if ((state->flags & DO_HISTORY) && state->cur_history > 0) {
get_previous_history();
goto rewrite_line;
}
beep();
break;
case 'B':
/* Down Arrow -- Get next command in history */
if (!get_next_history())
break;
rewrite_line:
/* Rewrite the line with the selected history item */
/* change command */
command_len = strlen(strcpy(command, state->history[state->cur_history]));
/* redraw and go to eol (bol, in vi */
redraw(cmdedit_y, (state->flags & VI_MODE) ? 9999 : 0);
break;
#endif
case 'C':
/* Right Arrow -- Move forward one character */
input_forward();
break;
case 'D':
/* Left Arrow -- Move back one character */
input_backward(1);
break;
case '3':
/* Delete */
input_delete(0);
break;
case '1': // vt100? linux vt? or what?
case '7': // vt100? linux vt? or what?
case 'H': /* xterm's <Home> */
input_backward(cursor);
break;
case '4': // vt100? linux vt? or what?
case '8': // vt100? linux vt? or what?
case 'F': /* xterm's <End> */
input_end();
break;
default:
c = '\0';
beep();
}
break;
default: /* If it's regular input, do the normal thing */
#if ENABLE_FEATURE_NONPRINTABLE_INVERSE_PUT
/* Control-V -- Add non-printable symbol */
if (c == CTRL('V')) {
if (safe_read(0, &c, 1) < 1)
goto prepare_to_die;
if (c == 0) {
beep();
break;
}
} else
#endif
#if ENABLE_FEATURE_EDITING_VI
if (vi_cmdmode) /* Don't self-insert */
break;
#endif
if (!Isprint(c)) /* Skip non-printable characters */
break;
if (command_len >= (maxsize - 2)) /* Need to leave space for enter */
break;
command_len++;
if (cursor == (command_len - 1)) { /* Append if at the end of the line */
command[cursor] = c;
command[cursor+1] = '\0';
cmdedit_set_out_char(' ');
} else { /* Insert otherwise */
int sc = cursor;
memmove(command + sc + 1, command + sc, command_len - sc);
command[sc] = c;
sc++;
/* rewrite from cursor */
input_end();
/* to prev x pos + 1 */
input_backward(cursor - sc);
}
break;
}
if (break_out) /* Enter is the command terminator, no more input. */
break;
if (c != '\t')
lastWasTab = FALSE;
}
int more_main(int argc, char **argv)
{
int c, lines, input = 0;
int please_display_more_prompt = 0;
struct stat st;
FILE *file;
FILE *cin;
int len, page_height;
int terminal_width;
int terminal_height;
INIT_G();
argv++;
/* Another popular pager, most, detects when stdout
* is not a tty and turns into cat. This makes sense. */
if (!isatty(STDOUT_FILENO))
return bb_cat(argv);
cin = fopen(CURRENT_TTY, "r");
if (!cin)
return bb_cat(argv);
#if ENABLE_FEATURE_USE_TERMIOS
cin_fileno = fileno(cin);
getTermSettings(cin_fileno, &initial_settings);
new_settings = initial_settings;
new_settings.c_lflag &= ~ICANON;
new_settings.c_lflag &= ~ECHO;
new_settings.c_cc[VMIN] = 1;
new_settings.c_cc[VTIME] = 0;
setTermSettings(cin_fileno, &new_settings);
signal(SIGINT, gotsig);
signal(SIGQUIT, gotsig);
signal(SIGTERM, gotsig);
#endif
please_display_more_prompt = 2;
do {
file = stdin;
if (*argv) {
file = fopen_or_warn(*argv, "r");
if (!file)
continue;
}
st.st_size = 0;
fstat(fileno(file), &st);
please_display_more_prompt &= ~1;
/* never returns w, h <= 1 */
get_terminal_width_height(fileno(cin), &terminal_width, &terminal_height);
terminal_width -= 1;
terminal_height -= 1;
len = 0;
lines = 0;
page_height = terminal_height;
while ((c = getc(file)) != EOF) {
if ((please_display_more_prompt & 3) == 3) {
len = printf("--More-- ");
if (/*file != stdin &&*/ st.st_size > 0) {
len += printf("(%d%% of %"OFF_FMT"d bytes)",
(int) (ftello(file)*100 / st.st_size),
st.st_size);
}
fflush(stdout);
/*
* We've just displayed the "--More--" prompt, so now we need
* to get input from the user.
*/
input = getc(cin);
#if !ENABLE_FEATURE_USE_TERMIOS
printf("\033[A"); /* up cursor */
#endif
/* Erase the "More" message */
printf("\r%*s\r", len, "");
len = 0;
lines = 0;
/* Bottom line on page will become top line
* after one page forward. Thus -1: */
page_height = terminal_height - 1;
please_display_more_prompt &= ~1;
if (input == 'q')
goto end;
}
/*
* There are two input streams to worry about here:
*
* c : the character we are reading from the file being "mored"
* input: a character received from the keyboard
*
* If we hit a newline in the _file_ stream, we want to test and
* see if any characters have been hit in the _input_ stream. This
* allows the user to quit while in the middle of a file.
*/
if (c == '\n') {
/* increment by just one line if we are at
* the end of this line */
if (input == '\n')
please_display_more_prompt |= 1;
/* Adjust the terminal height for any overlap, so that
* no lines get lost off the top. */
if (len >= terminal_width) {
int quot, rem;
quot = len / terminal_width;
rem = len - (quot * terminal_width);
page_height -= (quot - 1);
if (rem)
page_height--;
}
if (++lines >= page_height) {
please_display_more_prompt |= 1;
}
len = 0;
}
/*
* If we just read a newline from the file being 'mored' and any
* key other than a return is hit, scroll by one page
*/
putc(c, stdout);
/* My small mind cannot fathom tabs, backspaces,
* and UTF-8 */
len++;
}
fclose(file);
fflush(stdout);
} while (*argv && *++argv);
end:
setTermSettings(cin_fileno, &initial_settings);
return 0;
}
