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- #ifndef lint
- static char *RCSid = "$Id: readline.c,v 1.57 1995/06/14 12:17:52 drd Exp $";
- #endif
-
-
- /* GNUPLOT - readline.c */
- /*
- * Copyright (C) 1986 - 1993 Thomas Williams, Colin Kelley
- *
- * Permission to use, copy, and distribute this software and its
- * documentation for any purpose with or without fee is hereby granted,
- * provided that the above copyright notice appear in all copies and
- * that both that copyright notice and this permission notice appear
- * in supporting documentation.
- *
- * Permission to modify the software is granted, but not the right to
- * distribute the modified code. Modifications are to be distributed
- * as patches to released version.
- *
- * This software is provided "as is" without express or implied warranty.
- *
- *
- * AUTHORS
- *
- * Original Software:
- * Tom Tkacik
- *
- * Msdos port and some enhancements:
- * Gershon Elber and many others.
- *
- * There is a mailing list for gnuplot users. Note, however, that the
- * newsgroup
- * comp.graphics.gnuplot
- * is identical to the mailing list (they
- * both carry the same set of messages). We prefer that you read the
- * messages through that newsgroup, to subscribing to the mailing list.
- * (If you can read that newsgroup, and are already on the mailing list,
- * please send a message info-gnuplot-request@dartmouth.edu, asking to be
- * removed from the mailing list.)
- *
- * The address for mailing to list members is
- * info-gnuplot@dartmouth.edu
- * and for mailing administrative requests is
- * info-gnuplot-request@dartmouth.edu
- * The mailing list for bug reports is
- * bug-gnuplot@dartmouth.edu
- * The list of those interested in beta-test versions is
- * info-gnuplot-beta@dartmouth.edu
- */
-
- #if defined(READLINE) && !defined(GNU_READLINE)
-
- #ifdef _WINDOWS
- #define _Windows
- #endif
-
-
- /* a small portable version of GNU's readline */
- /* this is not the BASH or GNU EMACS version of READLINE due to Copyleft
- restrictions */
- /* do not need any terminal capabilities except backspace, */
- /* and space overwrites a character */
-
- /* NANO-EMACS line editing facility */
- /* printable characters print as themselves (insert not overwrite) */
- /* ^A moves to the beginning of the line */
- /* ^B moves back a single character */
- /* ^E moves to the end of the line */
- /* ^F moves forward a single character */
- /* ^K kills from current position to the end of line */
- /* ^P moves back through history */
- /* ^N moves forward through history */
- /* ^H and DEL delete the previous character */
- /* ^D deletes the current character, or EOF if line is empty */
- /* ^L/^R redraw line in case it gets trashed */
- /* ^U kills the entire line */
- /* ^W kills last word */
- /* LF and CR return the entire line regardless of the cursor postition */
- /* EOF with an empty line returns (char *)NULL */
-
- /* all other characters are ignored */
-
- #include <ctype.h>
- #include <signal.h>
- #include "plot.h" /* get prototype for alloc and gpfaralloc */
- #include "stdfn.h"
-
- #if !defined(MSDOS) && !defined(ATARI) && !defined(MTOS) && !defined(_Windows) && !defined(DOS386) && !defined(OSK)
-
- /*
- * Set up structures using the proper include file
- */
- #if defined(_IBMR2) || defined(alliant)
- #define SGTTY
- #endif
-
- /* submitted by Francois.Dagorn@cicb.fr */
- #ifdef SGTTY
- #include <sgtty.h>
- static struct sgttyb orig_termio, rl_termio;
- /* define terminal control characters */
- static struct tchars s_tchars;
- #ifndef VERASE
- #define VERASE 0
- #endif
- #ifndef VEOF
- #define VEOF 1
- #endif
- #ifndef VKILL
- #define VKILL 2
- #endif
- #ifdef TIOCGLTC /* available only with the 'new' line discipline */
- static struct ltchars s_ltchars;
- #ifndef VWERASE
- #define VWERASE 3
- #endif
- #ifndef VREPRINT
- #define VREPRINT 4
- #endif
- #ifndef VSUSP
- #define VSUSP 5
- #endif
- #endif /* TIOCGLTC */
- #ifndef NCCS
- #define NCCS 6
- #endif
-
- #else /* SGTTY */
-
- /* SIGTSTP defines job control */
- /* if there is job control then we need termios.h instead of termio.h */
- /* (Are there any systems with job control that use termio.h? I hope not.) */
- #if defined(SIGTSTP) || defined(TERMIOS)
- #ifndef TERMIOS
- #define TERMIOS
- #endif
- #include <termios.h>
- /* Added by Robert Eckardt, RobertE@beta.TP2.Ruhr-Uni-Bochum.de */
- #ifdef ISC22
- #ifndef ONOCR /* taken from sys/termio.h */
- #define ONOCR 0000020 /* true at least for ISC 2.2 */
- #endif
- #ifndef IUCLC
- #define IUCLC 0001000
- #endif
- #endif /* ISC22 */
- #if defined(NEXT) && !defined(IUCLC)
- #define IUCLC 0 /* no idea what this flag does */
- #endif
-
- static struct termios orig_termio, rl_termio;
- #else
- #include <termio.h>
- static struct termio orig_termio, rl_termio;
- /* termio defines NCC instead of NCCS */
- #define NCCS NCC
- #endif /* SIGTSTP */
- #endif /* SGTTY */
-
- /* ULTRIX defines VRPRNT instead of VREPRINT */
- #if defined(VRPRNT) && !defined(VREPRINT)
- #define VREPRINT VRPRNT
- #endif
-
- /* define characters to use with our input character handler */
- static char term_chars[NCCS];
-
- static int term_set = 0; /* =1 if rl_termio set */
-
- #define special_getc() ansi_getc()
- static int ansi_getc();
-
- #else /* !MSDOS && !ATARI && !_Windows */
-
- #ifdef _Windows
- #include <windows.h>
- #include "win/wtext.h"
- #include "win/wgnuplib.h"
- extern TW textwin;
- #define TEXTUSER 0xf1
- #define TEXTGNUPLOT 0xf0
- #define special_getc() msdos_getch()
- static char msdos_getch();
- #endif
-
- #if defined(MSDOS) || defined(DOS386)
- /* MSDOS specific stuff */
- #ifdef DJGPP
- #include <pc.h>
- #endif
- #ifdef __EMX__
- #include <conio.h>
- #endif
- #define special_getc() msdos_getch()
- static char msdos_getch();
- #endif /* MSDOS */
-
- #ifdef OSK
- #include <sgstat.h>
- #include <modes.h>
-
- #define STDIN 0
- static int term_set = 0; /* =1 if new_settings is set */
-
- static struct _sgs old_settings; /* old terminal settings */
- static struct _sgs new_settings; /* new terminal settings */
-
- #define special_getc() ansi_getc()
- static int ansi_getc();
-
- /* On OS9 a '\n' is a character 13 and '\r' == '\n'. This gives troubles
- here, so we need a new putc wich handles this correctly and print a
- character 10 on each place we want a '\n'.
- */
- #undef putc /* Undefine the macro for putc */
-
- static int putc (c,fp)
- char c;
- FILE *fp;
- {
- write (fileno(fp), &c, 1);
- if (c == '\012') /* A normal ASCII '\n' */
- {
- c = '\r';
- write (fileno(fp), &c, 1);
- }
- }
-
- #endif /* OSK */
-
- #if defined(ATARI) || defined(MTOS)
- #ifdef __PUREC__
- #include <tos.h>
- #else
- #include <osbind.h>
- #endif
- #define special_getc() tos_getch()
- char tos_getch();
- #endif
-
- #endif /* !MSDOS && !ATARI && !MTOS && !_Windows && !OSK*/
-
- #ifdef OS2
- #define special_getc() msdos_getch()
- static char msdos_getch();
- #endif
-
-
- #define MAXBUF 1024 /* initial size and increment of input line length */
- #define BACKSPACE 0x08 /* ^H */
- #define SPACE ' '
- #ifdef OSK
- #define NEWLINE '\012'
- #else
- #define NEWLINE '\n'
- #endif
-
- struct hist {
- char *line;
- struct hist *prev;
- struct hist *next;
- };
-
- static struct hist *history = NULL; /* no history yet */
- static struct hist *cur_entry = NULL;
-
- static char *cur_line; /* current contents of the line */
- static int line_len=0;
- static int cur_pos = 0; /* current position of the cursor */
- static int max_pos = 0; /* maximum character position */
-
-
- static void fix_line __P((void));
- static void redraw_line __P((char *prompt));
- static void clear_line __P((char *prompt));
- static void clear_eoline __P((void));
- static void copy_line __P((char *line));
- static void set_termio __P((void));
- static void reset_termio __P((void));
- static int ansi_getc __P((void));
- static int user_putc __P((int ch));
- static int user_puts __P((char *str));
- static void backspace __P((void));
- static void extend_cur_line __P((void));
-
- /* user_putc and user_puts should be used in the place of
- * fputc(ch,stderr) and fputs(str,stderr) for all output
- * of user typed characters. This allows MS-Windows to
- * display user input in a different color. */
- static int
- user_putc(ch)
- int ch;
- {
- int rv;
- #ifdef _Windows
- TextAttr(&textwin,TEXTUSER);
- #endif
- rv = fputc(ch, stderr);
- #ifdef _Windows
- TextAttr(&textwin,TEXTGNUPLOT);
- #endif
- return rv;
- }
-
- static int
- user_puts(str)
- char *str;
- {
- int rv;
- #ifdef _Windows
- TextAttr(&textwin,TEXTUSER);
- #endif
- rv = fputs(str, stderr);
- #ifdef _Windows
- TextAttr(&textwin,TEXTGNUPLOT);
- #endif
- return rv;
- }
-
- /* This function provides a centralized non-destructive backspace capability */
- /* M. Castro */
-
- static void
- backspace()
- {
- user_putc(BACKSPACE);
- }
-
- static void extend_cur_line()
- {
- char *new_line;
-
- /* extent input line length */
- new_line=ralloc(cur_line, line_len+MAXBUF, NULL);
- if(!new_line) {
- reset_termio();
- int_error("Can't extend readline length", NO_CARET);
- }
- cur_line=new_line;
- line_len+=MAXBUF;
- #ifdef DEBUG_STR
- fprintf(stderr, "\nextending readline length to %d chars\n", line_len);
- #endif
- }
-
- char *
- readline(prompt)
- char *prompt;
- {
-
- int cur_char;
- char *new_line;
-
- /* start with a string of MAXBUF chars */
-
- if(line_len!=0) {
- free(cur_line);
- line_len=0;
- }
-
- cur_line=alloc((unsigned long)MAXBUF, "readline");
- line_len=MAXBUF;
-
- /* set the termio so we can do our own input processing */
- set_termio();
-
- /* print the prompt */
- fputs(prompt, stderr);
- cur_line[0] = '\0';
- cur_pos = 0;
- max_pos = 0;
- cur_entry = NULL;
-
- /* get characters */
- for(;;) {
- cur_char = special_getc();
-
- /*
- * The #define CHARSET7BIT should be used when one encounters problems with
- * 8bit characters that should not be entered on the commandline. I cannot
- * think on any reasonable example where this could happen, but what do I know?
- * After all, the unix world still ignores 8bit chars in most applications.
- *
- * Note that latin1 defines the chars 0x80-0x9f as control chars. For the
- * benefit of Atari, MSDOS, Windows and NeXT I have decided to ignore this,
- * since it would require more #ifs.
- *
- */
-
- #ifdef CHARSET7BIT
- if(isprint(cur_char)) {
- #else /* CHARSET7BIT */
- if(isprint(cur_char) || (((unsigned char)cur_char > 0x7f) &&
- cur_char != EOF)) {
- #endif /* CHARSET7BIT */
- int i;
-
- if(max_pos+1>=line_len) {
- extend_cur_line();
- }
-
- for(i=max_pos; i>cur_pos; i--) {
- cur_line[i] = cur_line[i-1];
- }
- user_putc(cur_char);
- cur_line[cur_pos] = cur_char;
- cur_pos += 1;
- max_pos += 1;
- if (cur_pos < max_pos)
- fix_line();
- cur_line[max_pos] = '\0';
-
- /* else interpret unix terminal driver characters */
- #ifdef VERASE
- } else if(cur_char == term_chars[VERASE] ){ /* DEL? */
- if(cur_pos > 0) {
- int i;
- cur_pos -= 1;
- backspace();
- for(i=cur_pos; i<max_pos; i++)
- cur_line[i] = cur_line[i+1];
- max_pos -= 1;
- fix_line();
- }
- #endif /* VERASE */
- #ifdef VEOF
- } else if(cur_char == term_chars[VEOF] ){ /* ^D? */
- if(max_pos == 0) {
- reset_termio();
- return((char *)NULL);
- }
- if((cur_pos < max_pos)&&(cur_char == 004)) { /* ^D */
- int i;
- for(i=cur_pos; i<max_pos; i++)
- cur_line[i] = cur_line[i+1];
- max_pos -= 1;
- fix_line();
- }
- #endif /* VEOF */
- #ifdef VKILL
- } else if(cur_char == term_chars[VKILL] ){ /* ^U? */
- clear_line(prompt);
- #endif /* VKILL */
- #ifdef VWERASE
- } else if(cur_char == term_chars[VWERASE] ){ /* ^W? */
- while((cur_pos > 0) &&
- (cur_line[cur_pos-1] == SPACE)) {
- cur_pos -= 1;
- backspace();
- }
- while((cur_pos > 0) &&
- (cur_line[cur_pos-1] != SPACE)) {
- cur_pos -= 1;
- backspace();
- }
- clear_eoline();
- max_pos = cur_pos;
- #endif /* VWERASE */
- #ifdef VREPRINT
- } else if(cur_char == term_chars[VREPRINT] ){ /* ^R? */
- putc(NEWLINE,stderr); /* go to a fresh line */
- redraw_line(prompt);
- #endif /* VREPRINT */
- #ifdef VSUSP
- } else if(cur_char == term_chars[VSUSP]) {
- reset_termio();
- kill(0, SIGTSTP);
-
- /* process stops here */
-
- set_termio();
- /* print the prompt */
- redraw_line(prompt);
- #endif /* VSUSP */
- } else {
- /* do normal editing commands */
- /* some of these are also done above */
- int i;
- switch(cur_char) {
- case EOF:
- reset_termio();
- return((char *)NULL);
- case 001: /* ^A */
- while(cur_pos > 0) {
- cur_pos -= 1;
- backspace();
- }
- break;
- case 002: /* ^B */
- if(cur_pos > 0) {
- cur_pos -= 1;
- backspace();
- }
- break;
- case 005: /* ^E */
- while(cur_pos < max_pos) {
- user_putc(cur_line[cur_pos]);
- cur_pos += 1;
- }
- break;
- case 006: /* ^F */
- if(cur_pos < max_pos) {
- user_putc(cur_line[cur_pos]);
- cur_pos += 1;
- }
- break;
- case 013: /* ^K */
- clear_eoline();
- max_pos = cur_pos;
- break;
- case 020: /* ^P */
- if(history != NULL) {
- if(cur_entry == NULL) {
- cur_entry = history;
- clear_line(prompt);
- copy_line(cur_entry->line);
- } else if(cur_entry->prev != NULL) {
- cur_entry = cur_entry->prev;
- clear_line(prompt);
- copy_line(cur_entry->line);
- }
- }
- break;
- case 016: /* ^N */
- if(cur_entry != NULL) {
- cur_entry = cur_entry->next;
- clear_line(prompt);
- if(cur_entry != NULL)
- copy_line(cur_entry->line);
- else
- cur_pos = max_pos = 0;
- }
- break;
- case 014: /* ^L */
- case 022: /* ^R */
- putc(NEWLINE,stderr); /* go to a fresh line */
- redraw_line(prompt);
- break;
- case 0177: /* DEL */
- case 010: /* ^H */
- if(cur_pos > 0) {
- cur_pos -= 1;
- backspace();
- for(i=cur_pos; i<max_pos; i++)
- cur_line[i] = cur_line[i+1];
- max_pos -= 1;
- fix_line();
- }
- break;
- case 004: /* ^D */
- if(max_pos == 0) {
- reset_termio();
- return((char *)NULL);
- }
- if(cur_pos < max_pos) {
- for(i=cur_pos; i<max_pos; i++)
- cur_line[i] = cur_line[i+1];
- max_pos -= 1;
- fix_line();
- }
- break;
- case 025: /* ^U */
- clear_line(prompt);
- break;
- case 027: /* ^W */
- while((cur_pos > 0) &&
- (cur_line[cur_pos-1] == SPACE)) {
- cur_pos -= 1;
- backspace();
- }
- while((cur_pos > 0) &&
- (cur_line[cur_pos-1] != SPACE)) {
- cur_pos -= 1;
- backspace();
- }
- clear_eoline();
- max_pos = cur_pos;
- break;
- case '\n': /* ^J */
- #ifndef OSK
- case '\r': /* ^M */
- #endif
- cur_line[max_pos+1] = '\0';
- putc(NEWLINE, stderr);
- new_line = (char *)ralloc(cur_line, (unsigned long)(strlen(cur_line)+1), "line resize");
- line_len=0;
- #ifdef DEBUG_STR
- fprintf(stderr, "Resizing input line to %d chars\n", strlen(new_line));
- #endif
- reset_termio();
- return(new_line);
- default:
- break;
- }
- }
- }
- }
-
- /* fix up the line from cur_pos to max_pos */
- /* do not need any terminal capabilities except backspace, */
- /* and space overwrites a character */
- static void
- fix_line()
- {
- int i;
-
- /* write tail of string */
- for(i=cur_pos; i<max_pos; i++)
- user_putc(cur_line[i]);
-
- /* write a space at the end of the line in case we deleted one */
- user_putc(SPACE);
-
- /* backup to original position */
- for(i=max_pos+1; i>cur_pos; i--)
- backspace();
-
- }
-
- /* redraw the entire line, putting the cursor where it belongs */
- static void
- redraw_line(prompt)
- char *prompt;
- {
- int i;
-
- fputs(prompt, stderr);
- user_puts(cur_line);
-
- /* put the cursor where it belongs */
- for(i=max_pos; i>cur_pos; i--)
- backspace();
- }
-
- /* clear cur_line and the screen line */
- static void
- clear_line(prompt)
- char *prompt;
- {
- int i;
- for(i=0; i<max_pos; i++)
- cur_line[i] = '\0';
-
- for(i=cur_pos; i>0; i--)
- backspace();
-
- for(i=0; i<max_pos; i++)
- putc(SPACE, stderr);
-
- putc('\r', stderr);
- fputs(prompt, stderr);
-
- cur_pos = 0;
- max_pos = 0;
- }
-
- /* clear to end of line and the screen end of line */
- static void
- clear_eoline()
- {
- int i;
- for(i=cur_pos; i<max_pos; i++)
- cur_line[i] = '\0';
-
- for(i=cur_pos; i<max_pos; i++)
- putc(SPACE, stderr);
- for(i=cur_pos; i<max_pos; i++)
- backspace();
- }
-
- /* copy line to cur_line, draw it and set cur_pos and max_pos */
- static void
- copy_line(line)
- char *line;
- {
- while(strlen(line)+1>line_len) {
- extend_cur_line();
- }
- strcpy(cur_line, line);
- user_puts(cur_line);
- cur_pos = max_pos = strlen(cur_line);
- }
-
- /* add line to the history */
- void
- add_history(line)
- char *line;
- {
- struct hist *entry;
- entry = (struct hist *)alloc((unsigned long)sizeof(struct hist),"history");
- entry->line = alloc((unsigned long)(strlen(line)+1),"history");
- strcpy(entry->line, line);
-
- entry->prev = history;
- entry->next = NULL;
- if(history != NULL) {
- history->next = entry;
- }
- history = entry;
- }
-
-
- /* Convert ANSI arrow keys to control characters */
- static int
- ansi_getc()
- {
- int c = getc(stdin);
- if (c == 033) {
- c = getc(stdin); /* check for CSI */
- if (c == '[') {
- c = getc(stdin); /* get command character */
- switch (c) {
- case 'D': /* left arrow key */
- c = 002;
- break;
- case 'C': /* right arrow key */
- c = 006;
- break;
- case 'A': /* up arrow key */
- c = 020;
- break;
- case 'B': /* down arrow key */
- c = 016;
- break;
- }
- }
- }
- return c;
- }
-
- #if defined(MSDOS) || defined(_Windows) || defined(DOS386) || defined(OS2)
-
- /* Convert Arrow keystrokes to Control characters: */
- static char
- msdos_getch()
- {
- #ifdef DJGPP
- char c;
- int ch = getkey();
- c = (ch & 0xff00) ? 0 : ch & 0xff;
- #else
- #ifdef OS2
- char c = getc(stdin);
- #else
- char c = getch();
- #endif
- #endif
-
- if (c == 0) {
- #ifdef DJGPP
- c = ch & 0xff;
- #else
- #ifdef OS2
- c = getc(stdin);
- #else
- c = getch(); /* Get the extended code. */
- #endif
- #endif
- switch (c) {
- case 75: /* Left Arrow. */
- c = 002;
- break;
- case 77: /* Right Arrow. */
- c = 006;
- break;
- case 72: /* Up Arrow. */
- c = 020;
- break;
- case 80: /* Down Arrow. */
- c = 016;
- break;
- case 115: /* Ctl Left Arrow. */
- case 71: /* Home */
- c = 001;
- break;
- case 116: /* Ctl Right Arrow. */
- case 79: /* End */
- c = 005;
- break;
- case 83: /* Delete */
- c = 004;
- break;
- default:
- c = 0;
- break;
- }
- }
- else if (c == 033) { /* ESC */
- c = 025;
- }
-
-
- return c;
- }
-
- #endif /* MSDOS */
-
- #if defined(ATARI) || defined(MTOS)
-
- /* Convert Arrow keystrokes to Control characters: TOS version */
-
- long poll_events(int); /* from term/atariaes.trm */
-
- /* this function is used in help.c as well. this means that the
- program doesn't work without -DREADLINE (which would be the case
- if help.c didn't use it as well, since no events would be processed)
- */
-
- char
- tos_getch()
- {
- long rawkey;
- char c;
- int scan_code;
- static int in_help = 0;
-
- if (strcmp(term->name,"atari") == 0)
- poll_events(0);
-
- if (in_help) {
- switch(in_help) {
- case 1:
- case 5: in_help++; return 'e';
- case 2:
- case 6: in_help++; return 'l';
- case 3:
- case 7: in_help++; return 'p';
- case 4: in_help = 0; return 0x0d;
- case 8: in_help = 0; return ' ';
- }
- }
-
- if (strcmp(term->name,"atari") == 0) {
- do {
- if(Bconstat(2))
- rawkey = Cnecin();
- else
- rawkey = poll_events(1);
- } while(rawkey==0);
- }
- else
- rawkey = Cnecin();
-
- c = (char)rawkey;
- scan_code= ((int)(rawkey>>16)) & 0xff; /* get the scancode */
- if (Kbshift(-1) & 0x00000007) scan_code |= 0x80; /* shift or control ? */
-
- switch (scan_code) {
- case 0x62: /* HELP */
- case 0xe2: /* shift HELP */
- if (max_pos==0) {
- if (scan_code==0x62) {
- in_help = 1;
- } else {
- in_help = 5;
- }
- return 'h';
- } else {
- return 0;
- }
- case 0x48: /* Up Arrow */
- return 0x10; /* ^P */
- case 0x50: /* Down Arrow */
- return 0x0e; /* ^N */
- case 0x4b: /* Left Arrow */
- return 0x02; /* ^B */
- case 0x4d: /* Right Arrow */
- return 0x06; /* ^F */
- case 0xcb: /* Shift Left Arrow */
- case 0xf3: /* Ctrl Left Arrow (TOS-bug ?) */
- case 0x47: /* Home */
- return 0x01; /* ^A */
- case 0xcd: /* Shift Right Arrow */
- case 0xf4: /* Ctrl Right Arrow (TOS-bug ?) */
- case 0xc7: /* Shift Home */
- case 0xf7: /* Ctrl Home */
- return 0x05; /* ^E */
- case 0x61: /* Undo - redraw line */
- return 0x0c; /* ^L */
- default:
- if (c == 0x1b) return 0x15; /* ESC becomes ^U */
- if (c == 0x7f) return 0x04; /* Del becomes ^D */
- break;
- }
- return c;
- }
-
- #endif /* ATARI || MTOS */
-
- /* set termio so we can do our own input processing */
- static void
- set_termio()
- {
- #if !defined(MSDOS) && !defined(ATARI) && !defined(MTOS) && !defined(_Windows) && !defined(DOS386)
- /* set termio so we can do our own input processing */
- /* and save the old terminal modes so we can reset them later */
- if(term_set == 0) {
- /*
- * Get terminal modes.
- */
- #ifndef OSK
- #ifdef SGTTY
- ioctl(0, TIOCGETP, &orig_termio);
- #else /* SGTTY */
- #ifdef TERMIOS
- #ifdef TCGETS
- ioctl(0, TCGETS, &orig_termio);
- #else
- tcgetattr(0, &orig_termio);
- #endif /* TCGETS */
- #else
- ioctl(0, TCGETA, &orig_termio);
- #endif /* TERMIOS */
- #endif /* SGTTY */
- #else /* OSK */
- setbuf(stdin, (char *)0); /* Make stdin and stdout unbuffered */
- setbuf(stderr, (char *)0);
- _gs_opt (STDIN, &new_settings);
- #endif
-
- /*
- * Save terminal modes
- */
- #ifndef OSK
- rl_termio = orig_termio;
- #else
- _gs_opt (STDIN, &old_settings);
- #endif
-
- /*
- * Set the modes to the way we want them
- * and save our input special characters
- */
- #ifndef OSK
- #ifdef SGTTY
- rl_termio.sg_flags |= CBREAK;
- rl_termio.sg_flags &= ~(ECHO|XTABS);
- ioctl(0, TIOCSETN, &rl_termio);
-
- ioctl(0, TIOCGETC, &s_tchars);
- term_chars[VERASE] = orig_termio.sg_erase;
- term_chars[VEOF] = s_tchars.t_eofc;
- term_chars[VKILL] = orig_termio.sg_kill;
- #ifdef TIOCGLTC
- ioctl(0, TIOCGLTC, &s_ltchars);
- term_chars[VWERASE] = s_ltchars.t_werasc;
- term_chars[VREPRINT] = s_ltchars.t_rprntc;
- term_chars[VSUSP] = s_ltchars.t_suspc;
-
- /* disable suspending process on ^Z */
- s_ltchars.t_suspc = 0;
- ioctl(0, TIOCSLTC, &s_ltchars);
- #endif /* TIOCGLTC */
- #else /* SGTTY */
- rl_termio.c_iflag &= ~(BRKINT|PARMRK|INPCK|IUCLC|IXON|IXOFF);
- rl_termio.c_iflag |= (IGNBRK|IGNPAR);
-
- /* rl_termio.c_oflag &= ~(ONOCR); Costas Sphocleous Irvine,CA */
-
- rl_termio.c_lflag &= ~(ICANON|ECHO|ECHOE|ECHOK|ECHONL|NOFLSH);
- #ifdef OS2
- /* for emx: remove default terminal processing */
- rl_termio.c_lflag &= ~(IDEFAULT);
- #endif /* OS2 */
- rl_termio.c_lflag |= (ISIG);
- rl_termio.c_cc[VMIN] = 1;
- rl_termio.c_cc[VTIME] = 0;
-
- #ifndef VWERASE
- #define VWERASE 3
- #endif
- term_chars[VERASE] = orig_termio.c_cc[VERASE];
- term_chars[VEOF] = orig_termio.c_cc[VEOF];
- term_chars[VKILL] = orig_termio.c_cc[VKILL];
- #ifdef TERMIOS
- term_chars[VWERASE] = orig_termio.c_cc[VWERASE];
- #ifdef VREPRINT
- term_chars[VREPRINT] = orig_termio.c_cc[VREPRINT];
- #else
- #ifdef VRPRNT
- term_chars[VRPRNT] = orig_termio.c_cc[VRPRNT];
- #endif
- #endif
- term_chars[VSUSP] = orig_termio.c_cc[VSUSP];
-
- /* disable suspending process on ^Z */
- rl_termio.c_cc[VSUSP] = 0;
- #endif /* TERMIOS */
- #endif /* SGTTY */
- #else /* OSK */
- new_settings._sgs_echo = 0; /* switch off terminal echo */
- new_settings._sgs_pause = 0; /* inhibit page pause */
- new_settings._sgs_eofch = 0; /* inhibit eof */
- new_settings._sgs_kbich = 0; /* inhibit ^C */
- new_settings._sgs_kbach = 0; /* inhibit ^E */
- #endif
-
- /*
- * Set the new terminal modes.
- */
- #ifndef OSK
- #ifdef SGTTY
- ioctl(0, TIOCSLTC, &s_ltchars);
- #else
- #ifdef TERMIOS
- #ifdef TCSETSW
- ioctl(0, TCSETSW, &rl_termio);
- #else
- tcsetattr(0, TCSADRAIN, &rl_termio);
- #endif /* TCSETSW */
- #else
- ioctl(0, TCSETAW, &rl_termio);
- #endif /* TERMIOS */
- #endif /* SGTTY */
- #else /* OSK */
- _ss_opt (STDIN, &new_settings);
- #endif
- term_set = 1;
- }
- #endif /* !MSDOS && !ATARI && !MTOS && !defined(_Windows) */
- }
-
- static void
- reset_termio()
- {
- #if !defined(MSDOS) && !defined(ATARI) && !defined(MTOS) && !defined(_Windows) && !defined(DOS386)
- /* reset saved terminal modes */
- if(term_set == 1) {
- #ifndef OSK
- #ifdef SGTTY
- ioctl(0, TIOCSETN, &orig_termio);
- #ifdef TIOCGLTC
- /* enable suspending process on ^Z */
- s_ltchars.t_suspc = term_chars[VSUSP];
- ioctl(0, TIOCSLTC, &s_ltchars);
- #endif /* TIOCGLTC */
- #else /* SGTTY */
- #ifdef TERMIOS
- #ifdef TCSETSW
- ioctl(0, TCSETSW, &orig_termio);
- #else
- tcsetattr(0, TCSADRAIN, &orig_termio);
- #endif /* TCSETSW */
- #else
- ioctl(0, TCSETAW, &orig_termio);
- #endif /* TERMIOS */
- #endif /* SGTTY */
- #else /* OSK */
- _ss_opt (STDIN, &old_settings);
- #endif
- term_set = 0;
- }
- #endif /* !MSDOS && !ATARI && !MTOS && !_Windows */
- }
- #endif /* READLINE */
-