2473 lines
48 KiB
C
2473 lines
48 KiB
C
/* $FreeBSD$ */
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/*
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* Copyright (C) 1984-2007 Mark Nudelman
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*
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* You may distribute under the terms of either the GNU General Public
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* License or the Less License, as specified in the README file.
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*
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* For more information about less, or for information on how to
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* contact the author, see the README file.
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*/
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/*
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* Routines which deal with the characteristics of the terminal.
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* Uses termcap to be as terminal-independent as possible.
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*/
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#include "less.h"
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#include "cmd.h"
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#if MSDOS_COMPILER
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#include "pckeys.h"
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#if MSDOS_COMPILER==MSOFTC
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#include <graph.h>
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#else
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#if MSDOS_COMPILER==BORLANDC || MSDOS_COMPILER==DJGPPC
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#include <conio.h>
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#if MSDOS_COMPILER==DJGPPC
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#include <pc.h>
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extern int fd0;
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#endif
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#else
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#if MSDOS_COMPILER==WIN32C
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#include <windows.h>
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#endif
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#endif
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#endif
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#include <time.h>
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#else
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#if HAVE_SYS_IOCTL_H
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#include <sys/ioctl.h>
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#endif
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#if HAVE_TERMIOS_H && HAVE_TERMIOS_FUNCS
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#include <termios.h>
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#else
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#if HAVE_TERMIO_H
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#include <termio.h>
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#else
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#if HAVE_SGSTAT_H
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#include <sgstat.h>
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#else
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#include <sgtty.h>
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#endif
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#endif
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#endif
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#if HAVE_TERMCAP_H
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#include <termcap.h>
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#endif
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#ifdef _OSK
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#include <signal.h>
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#endif
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#if OS2
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#include <sys/signal.h>
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#include "pckeys.h"
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#endif
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#if HAVE_SYS_STREAM_H
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#include <sys/stream.h>
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#endif
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#if HAVE_SYS_PTEM_H
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#include <sys/ptem.h>
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#endif
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#endif /* MSDOS_COMPILER */
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/*
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* Check for broken termios package that forces you to manually
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* set the line discipline.
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*/
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#ifdef __ultrix__
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#define MUST_SET_LINE_DISCIPLINE 1
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#else
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#define MUST_SET_LINE_DISCIPLINE 0
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#endif
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#if OS2
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#define DEFAULT_TERM "ansi"
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static char *windowid;
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#else
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#define DEFAULT_TERM "unknown"
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#endif
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#if MSDOS_COMPILER==MSOFTC
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static int videopages;
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static long msec_loops;
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static int flash_created = 0;
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#define SETCOLORS(fg,bg) { _settextcolor(fg); _setbkcolor(bg); }
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#endif
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#if MSDOS_COMPILER==BORLANDC
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static unsigned short *whitescreen;
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static int flash_created = 0;
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#endif
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#if MSDOS_COMPILER==BORLANDC || MSDOS_COMPILER==DJGPPC
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#define _settextposition(y,x) gotoxy(x,y)
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#define _clearscreen(m) clrscr()
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#define _outtext(s) cputs(s)
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#define SETCOLORS(fg,bg) { textcolor(fg); textbackground(bg); }
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extern int sc_height;
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#endif
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#if MSDOS_COMPILER==WIN32C
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struct keyRecord
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{
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int ascii;
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int scan;
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} currentKey;
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static int keyCount = 0;
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static WORD curr_attr;
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static int pending_scancode = 0;
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static WORD *whitescreen;
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static HANDLE con_out_save = INVALID_HANDLE_VALUE; /* previous console */
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static HANDLE con_out_ours = INVALID_HANDLE_VALUE; /* our own */
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HANDLE con_out = INVALID_HANDLE_VALUE; /* current console */
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extern int quitting;
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static void win32_init_term();
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static void win32_deinit_term();
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#define FG_COLORS (FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE | FOREGROUND_INTENSITY)
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#define BG_COLORS (BACKGROUND_RED | BACKGROUND_GREEN | BACKGROUND_BLUE | BACKGROUND_INTENSITY)
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#define MAKEATTR(fg,bg) ((WORD)((fg)|((bg)<<4)))
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#define SETCOLORS(fg,bg) { curr_attr = MAKEATTR(fg,bg); \
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if (SetConsoleTextAttribute(con_out, curr_attr) == 0) \
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error("SETCOLORS failed"); }
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#endif
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#if MSDOS_COMPILER
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public int nm_fg_color; /* Color of normal text */
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public int nm_bg_color;
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public int bo_fg_color; /* Color of bold text */
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public int bo_bg_color;
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public int ul_fg_color; /* Color of underlined text */
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public int ul_bg_color;
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public int so_fg_color; /* Color of standout text */
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public int so_bg_color;
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public int bl_fg_color; /* Color of blinking text */
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public int bl_bg_color;
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static int sy_fg_color; /* Color of system text (before less) */
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static int sy_bg_color;
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#else
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/*
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* Strings passed to tputs() to do various terminal functions.
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*/
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static char
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*sc_pad, /* Pad string */
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*sc_home, /* Cursor home */
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*sc_addline, /* Add line, scroll down following lines */
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*sc_lower_left, /* Cursor to last line, first column */
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*sc_return, /* Cursor to beginning of current line */
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*sc_move, /* General cursor positioning */
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*sc_clear, /* Clear screen */
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*sc_eol_clear, /* Clear to end of line */
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*sc_eos_clear, /* Clear to end of screen */
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*sc_s_in, /* Enter standout (highlighted) mode */
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*sc_s_out, /* Exit standout mode */
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*sc_u_in, /* Enter underline mode */
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*sc_u_out, /* Exit underline mode */
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*sc_b_in, /* Enter bold mode */
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*sc_b_out, /* Exit bold mode */
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*sc_bl_in, /* Enter blink mode */
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*sc_bl_out, /* Exit blink mode */
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*sc_visual_bell, /* Visual bell (flash screen) sequence */
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*sc_backspace, /* Backspace cursor */
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*sc_s_keypad, /* Start keypad mode */
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*sc_e_keypad, /* End keypad mode */
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*sc_init, /* Startup terminal initialization */
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*sc_deinit; /* Exit terminal de-initialization */
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#endif
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static int init_done = 0;
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public int auto_wrap; /* Terminal does \r\n when write past margin */
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public int ignaw; /* Terminal ignores \n immediately after wrap */
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public int erase_char; /* The user's erase char */
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public int erase2_char; /* The user's other erase char */
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public int kill_char; /* The user's line-kill char */
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public int werase_char; /* The user's word-erase char */
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public int sc_width, sc_height; /* Height & width of screen */
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public int bo_s_width, bo_e_width; /* Printing width of boldface seq */
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public int ul_s_width, ul_e_width; /* Printing width of underline seq */
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public int so_s_width, so_e_width; /* Printing width of standout seq */
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public int bl_s_width, bl_e_width; /* Printing width of blink seq */
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public int above_mem, below_mem; /* Memory retained above/below screen */
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public int can_goto_line; /* Can move cursor to any line */
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public int clear_bg; /* Clear fills with background color */
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public int missing_cap = 0; /* Some capability is missing */
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static int attrmode = AT_NORMAL;
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extern int binattr;
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#if !MSDOS_COMPILER
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static char *cheaper();
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static void tmodes();
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#endif
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/*
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* These two variables are sometimes defined in,
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* and needed by, the termcap library.
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*/
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#if MUST_DEFINE_OSPEED
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extern short ospeed; /* Terminal output baud rate */
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extern char PC; /* Pad character */
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#endif
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#ifdef _OSK
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short ospeed;
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char PC_, *UP, *BC;
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#endif
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extern int quiet; /* If VERY_QUIET, use visual bell for bell */
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extern int no_back_scroll;
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extern int swindow;
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extern int no_init;
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extern int no_keypad;
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extern int sigs;
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extern int wscroll;
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extern int screen_trashed;
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extern int tty;
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extern int top_scroll;
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extern int oldbot;
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#if HILITE_SEARCH
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extern int hilite_search;
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#endif
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extern char *tgetstr();
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extern char *tgoto();
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/*
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* Change terminal to "raw mode", or restore to "normal" mode.
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* "Raw mode" means
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* 1. An outstanding read will complete on receipt of a single keystroke.
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* 2. Input is not echoed.
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* 3. On output, \n is mapped to \r\n.
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* 4. \t is NOT expanded into spaces.
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* 5. Signal-causing characters such as ctrl-C (interrupt),
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* etc. are NOT disabled.
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* It doesn't matter whether an input \n is mapped to \r, or vice versa.
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*/
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public void
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raw_mode(on)
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int on;
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{
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static int curr_on = 0;
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if (on == curr_on)
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return;
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erase2_char = '\b'; /* in case OS doesn't know about erase2 */
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#if HAVE_TERMIOS_H && HAVE_TERMIOS_FUNCS
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{
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struct termios s;
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static struct termios save_term;
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static int saved_term = 0;
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if (on)
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{
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/*
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* Get terminal modes.
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*/
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tcgetattr(tty, &s);
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/*
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* Save modes and set certain variables dependent on modes.
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*/
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if (!saved_term)
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{
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save_term = s;
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saved_term = 1;
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}
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#if HAVE_OSPEED
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switch (cfgetospeed(&s))
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{
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#ifdef B0
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case B0: ospeed = 0; break;
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#endif
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#ifdef B50
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case B50: ospeed = 1; break;
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#endif
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#ifdef B75
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case B75: ospeed = 2; break;
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#endif
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#ifdef B110
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case B110: ospeed = 3; break;
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#endif
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#ifdef B134
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case B134: ospeed = 4; break;
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#endif
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#ifdef B150
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case B150: ospeed = 5; break;
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#endif
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#ifdef B200
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case B200: ospeed = 6; break;
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#endif
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#ifdef B300
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case B300: ospeed = 7; break;
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#endif
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#ifdef B600
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case B600: ospeed = 8; break;
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#endif
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#ifdef B1200
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case B1200: ospeed = 9; break;
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#endif
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#ifdef B1800
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case B1800: ospeed = 10; break;
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#endif
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#ifdef B2400
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case B2400: ospeed = 11; break;
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#endif
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#ifdef B4800
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case B4800: ospeed = 12; break;
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#endif
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#ifdef B9600
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case B9600: ospeed = 13; break;
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#endif
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#ifdef EXTA
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case EXTA: ospeed = 14; break;
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#endif
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#ifdef EXTB
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case EXTB: ospeed = 15; break;
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#endif
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#ifdef B57600
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case B57600: ospeed = 16; break;
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#endif
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#ifdef B115200
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case B115200: ospeed = 17; break;
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#endif
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default: ;
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}
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#endif
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erase_char = s.c_cc[VERASE];
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#ifdef VERASE2
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erase2_char = s.c_cc[VERASE2];
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#endif
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kill_char = s.c_cc[VKILL];
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#ifdef VWERASE
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werase_char = s.c_cc[VWERASE];
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#else
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werase_char = CONTROL('W');
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#endif
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/*
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* Set the modes to the way we want them.
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*/
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s.c_lflag &= ~(0
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#ifdef ICANON
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| ICANON
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#endif
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#ifdef ECHO
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| ECHO
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#endif
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#ifdef ECHOE
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| ECHOE
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#endif
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#ifdef ECHOK
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| ECHOK
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#endif
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#if ECHONL
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| ECHONL
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#endif
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);
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s.c_oflag |= (0
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#ifdef OXTABS
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| OXTABS
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#else
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#ifdef TAB3
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| TAB3
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#else
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#ifdef XTABS
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| XTABS
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#endif
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#endif
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#endif
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#ifdef OPOST
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| OPOST
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#endif
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#ifdef ONLCR
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| ONLCR
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#endif
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);
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s.c_oflag &= ~(0
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#ifdef ONOEOT
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| ONOEOT
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#endif
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#ifdef OCRNL
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| OCRNL
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#endif
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#ifdef ONOCR
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| ONOCR
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#endif
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#ifdef ONLRET
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| ONLRET
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#endif
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);
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s.c_cc[VMIN] = 1;
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s.c_cc[VTIME] = 0;
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#ifdef VLNEXT
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s.c_cc[VLNEXT] = 0;
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#endif
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#ifdef VDSUSP
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s.c_cc[VDSUSP] = 0;
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#endif
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#if MUST_SET_LINE_DISCIPLINE
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/*
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* System's termios is broken; need to explicitly
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* request TERMIODISC line discipline.
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*/
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s.c_line = TERMIODISC;
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#endif
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} else
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{
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/*
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* Restore saved modes.
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*/
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s = save_term;
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}
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#if HAVE_FSYNC
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fsync(tty);
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#endif
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tcsetattr(tty, TCSADRAIN, &s);
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#if MUST_SET_LINE_DISCIPLINE
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if (!on)
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{
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/*
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* Broken termios *ignores* any line discipline
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* except TERMIODISC. A different old line discipline
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* is therefore not restored, yet. Restore the old
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* line discipline by hand.
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*/
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ioctl(tty, TIOCSETD, &save_term.c_line);
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}
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#endif
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}
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#else
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#ifdef TCGETA
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{
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struct termio s;
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static struct termio save_term;
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static int saved_term = 0;
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if (on)
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{
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/*
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* Get terminal modes.
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*/
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ioctl(tty, TCGETA, &s);
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/*
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* Save modes and set certain variables dependent on modes.
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*/
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if (!saved_term)
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{
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save_term = s;
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saved_term = 1;
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}
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#if HAVE_OSPEED
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ospeed = s.c_cflag & CBAUD;
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#endif
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erase_char = s.c_cc[VERASE];
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kill_char = s.c_cc[VKILL];
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#ifdef VWERASE
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werase_char = s.c_cc[VWERASE];
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#else
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werase_char = CONTROL('W');
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#endif
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/*
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* Set the modes to the way we want them.
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*/
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s.c_lflag &= ~(ICANON|ECHO|ECHOE|ECHOK|ECHONL);
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s.c_oflag |= (OPOST|ONLCR|TAB3);
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s.c_oflag &= ~(OCRNL|ONOCR|ONLRET);
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s.c_cc[VMIN] = 1;
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s.c_cc[VTIME] = 0;
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} else
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{
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/*
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* Restore saved modes.
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*/
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s = save_term;
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}
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ioctl(tty, TCSETAW, &s);
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}
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#else
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#ifdef TIOCGETP
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{
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struct sgttyb s;
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static struct sgttyb save_term;
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static int saved_term = 0;
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if (on)
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{
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/*
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* Get terminal modes.
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*/
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ioctl(tty, TIOCGETP, &s);
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/*
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* Save modes and set certain variables dependent on modes.
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*/
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if (!saved_term)
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{
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save_term = s;
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saved_term = 1;
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}
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#if HAVE_OSPEED
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ospeed = s.sg_ospeed;
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#endif
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erase_char = s.sg_erase;
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kill_char = s.sg_kill;
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werase_char = CONTROL('W');
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/*
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* Set the modes to the way we want them.
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*/
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s.sg_flags |= CBREAK;
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s.sg_flags &= ~(ECHO|XTABS);
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} else
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{
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/*
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* Restore saved modes.
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*/
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s = save_term;
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}
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ioctl(tty, TIOCSETN, &s);
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}
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#else
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#ifdef _OSK
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{
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struct sgbuf s;
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static struct sgbuf save_term;
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static int saved_term = 0;
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|
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if (on)
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{
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/*
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* Get terminal modes.
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*/
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_gs_opt(tty, &s);
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|
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/*
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* Save modes and set certain variables dependent on modes.
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|
*/
|
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if (!saved_term)
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{
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save_term = s;
|
|
saved_term = 1;
|
|
}
|
|
erase_char = s.sg_bspch;
|
|
kill_char = s.sg_dlnch;
|
|
werase_char = CONTROL('W');
|
|
|
|
/*
|
|
* Set the modes to the way we want them.
|
|
*/
|
|
s.sg_echo = 0;
|
|
s.sg_eofch = 0;
|
|
s.sg_pause = 0;
|
|
s.sg_psch = 0;
|
|
} else
|
|
{
|
|
/*
|
|
* Restore saved modes.
|
|
*/
|
|
s = save_term;
|
|
}
|
|
_ss_opt(tty, &s);
|
|
}
|
|
#else
|
|
/* MS-DOS, Windows, or OS2 */
|
|
#if OS2
|
|
/* OS2 */
|
|
LSIGNAL(SIGINT, SIG_IGN);
|
|
#endif
|
|
erase_char = '\b';
|
|
#if MSDOS_COMPILER==DJGPPC
|
|
kill_char = CONTROL('U');
|
|
/*
|
|
* So that when we shell out or run another program, its
|
|
* stdin is in cooked mode. We do not switch stdin to binary
|
|
* mode if fd0 is zero, since that means we were called before
|
|
* tty was reopened in open_getchr, in which case we would be
|
|
* changing the original stdin device outside less.
|
|
*/
|
|
if (fd0 != 0)
|
|
setmode(0, on ? O_BINARY : O_TEXT);
|
|
#else
|
|
kill_char = ESC;
|
|
#endif
|
|
werase_char = CONTROL('W');
|
|
#endif
|
|
#endif
|
|
#endif
|
|
#endif
|
|
curr_on = on;
|
|
}
|
|
|
|
#if !MSDOS_COMPILER
|
|
/*
|
|
* Some glue to prevent calling termcap functions if tgetent() failed.
|
|
*/
|
|
static int hardcopy;
|
|
|
|
static char *
|
|
ltget_env(capname)
|
|
char *capname;
|
|
{
|
|
char name[16];
|
|
char *s;
|
|
|
|
s = lgetenv("LESS_TERMCAP_DEBUG");
|
|
if (s != NULL && *s != '\0')
|
|
{
|
|
struct env { struct env *next; char *name; char *value; };
|
|
static struct env *envs = NULL;
|
|
struct env *p;
|
|
for (p = envs; p != NULL; p = p->next)
|
|
if (strcmp(p->name, capname) == 0)
|
|
return p->value;
|
|
p = (struct env *) ecalloc(1, sizeof(struct env));
|
|
p->name = save(capname);
|
|
p->value = (char *) ecalloc(strlen(capname)+3, sizeof(char));
|
|
sprintf(p->value, "<%s>", capname);
|
|
p->next = envs;
|
|
envs = p;
|
|
return p->value;
|
|
}
|
|
strcpy(name, "LESS_TERMCAP_");
|
|
strcat(name, capname);
|
|
return (lgetenv(name));
|
|
}
|
|
|
|
static int
|
|
ltgetflag(capname)
|
|
char *capname;
|
|
{
|
|
char *s;
|
|
|
|
if ((s = ltget_env(capname)) != NULL)
|
|
return (*s != '\0' && *s != '0');
|
|
if (hardcopy)
|
|
return (0);
|
|
return (tgetflag(capname));
|
|
}
|
|
|
|
static int
|
|
ltgetnum(capname)
|
|
char *capname;
|
|
{
|
|
char *s;
|
|
|
|
if ((s = ltget_env(capname)) != NULL)
|
|
return (atoi(s));
|
|
if (hardcopy)
|
|
return (-1);
|
|
return (tgetnum(capname));
|
|
}
|
|
|
|
static char *
|
|
ltgetstr(capname, pp)
|
|
char *capname;
|
|
char **pp;
|
|
{
|
|
char *s;
|
|
|
|
if ((s = ltget_env(capname)) != NULL)
|
|
return (s);
|
|
if (hardcopy)
|
|
return (NULL);
|
|
return (tgetstr(capname, pp));
|
|
}
|
|
#endif /* MSDOS_COMPILER */
|
|
|
|
/*
|
|
* Get size of the output screen.
|
|
*/
|
|
public void
|
|
scrsize()
|
|
{
|
|
register char *s;
|
|
int sys_height;
|
|
int sys_width;
|
|
#if !MSDOS_COMPILER
|
|
int n;
|
|
#endif
|
|
|
|
#define DEF_SC_WIDTH 80
|
|
#if MSDOS_COMPILER
|
|
#define DEF_SC_HEIGHT 25
|
|
#else
|
|
#define DEF_SC_HEIGHT 24
|
|
#endif
|
|
|
|
|
|
sys_width = sys_height = 0;
|
|
|
|
#if MSDOS_COMPILER==MSOFTC
|
|
{
|
|
struct videoconfig w;
|
|
_getvideoconfig(&w);
|
|
sys_height = w.numtextrows;
|
|
sys_width = w.numtextcols;
|
|
}
|
|
#else
|
|
#if MSDOS_COMPILER==BORLANDC || MSDOS_COMPILER==DJGPPC
|
|
{
|
|
struct text_info w;
|
|
gettextinfo(&w);
|
|
sys_height = w.screenheight;
|
|
sys_width = w.screenwidth;
|
|
}
|
|
#else
|
|
#if MSDOS_COMPILER==WIN32C
|
|
{
|
|
CONSOLE_SCREEN_BUFFER_INFO scr;
|
|
GetConsoleScreenBufferInfo(con_out, &scr);
|
|
sys_height = scr.srWindow.Bottom - scr.srWindow.Top + 1;
|
|
sys_width = scr.srWindow.Right - scr.srWindow.Left + 1;
|
|
}
|
|
#else
|
|
#if OS2
|
|
{
|
|
int s[2];
|
|
_scrsize(s);
|
|
sys_width = s[0];
|
|
sys_height = s[1];
|
|
/*
|
|
* When using terminal emulators for XFree86/OS2, the
|
|
* _scrsize function does not work well.
|
|
* Call the scrsize.exe program to get the window size.
|
|
*/
|
|
windowid = getenv("WINDOWID");
|
|
if (windowid != NULL)
|
|
{
|
|
FILE *fd = popen("scrsize", "rt");
|
|
if (fd != NULL)
|
|
{
|
|
int w, h;
|
|
fscanf(fd, "%i %i", &w, &h);
|
|
if (w > 0 && h > 0)
|
|
{
|
|
sys_width = w;
|
|
sys_height = h;
|
|
}
|
|
pclose(fd);
|
|
}
|
|
}
|
|
}
|
|
#else
|
|
#ifdef TIOCGWINSZ
|
|
{
|
|
struct winsize w;
|
|
if (ioctl(2, TIOCGWINSZ, &w) == 0)
|
|
{
|
|
if (w.ws_row > 0)
|
|
sys_height = w.ws_row;
|
|
if (w.ws_col > 0)
|
|
sys_width = w.ws_col;
|
|
}
|
|
}
|
|
#else
|
|
#ifdef WIOCGETD
|
|
{
|
|
struct uwdata w;
|
|
if (ioctl(2, WIOCGETD, &w) == 0)
|
|
{
|
|
if (w.uw_height > 0)
|
|
sys_height = w.uw_height / w.uw_vs;
|
|
if (w.uw_width > 0)
|
|
sys_width = w.uw_width / w.uw_hs;
|
|
}
|
|
}
|
|
#endif
|
|
#endif
|
|
#endif
|
|
#endif
|
|
#endif
|
|
#endif
|
|
|
|
if (sys_height > 0)
|
|
sc_height = sys_height;
|
|
else if ((s = lgetenv("LINES")) != NULL)
|
|
sc_height = atoi(s);
|
|
#if !MSDOS_COMPILER
|
|
else if ((n = ltgetnum("li")) > 0)
|
|
sc_height = n;
|
|
#endif
|
|
else
|
|
sc_height = DEF_SC_HEIGHT;
|
|
|
|
if (sys_width > 0)
|
|
sc_width = sys_width;
|
|
else if ((s = lgetenv("COLUMNS")) != NULL)
|
|
sc_width = atoi(s);
|
|
#if !MSDOS_COMPILER
|
|
else if ((n = ltgetnum("co")) > 0)
|
|
sc_width = n;
|
|
#endif
|
|
else
|
|
sc_width = DEF_SC_WIDTH;
|
|
}
|
|
|
|
#if MSDOS_COMPILER==MSOFTC
|
|
/*
|
|
* Figure out how many empty loops it takes to delay a millisecond.
|
|
*/
|
|
static void
|
|
get_clock()
|
|
{
|
|
clock_t start;
|
|
|
|
/*
|
|
* Get synchronized at the start of a tick.
|
|
*/
|
|
start = clock();
|
|
while (clock() == start)
|
|
;
|
|
/*
|
|
* Now count loops till the next tick.
|
|
*/
|
|
start = clock();
|
|
msec_loops = 0;
|
|
while (clock() == start)
|
|
msec_loops++;
|
|
/*
|
|
* Convert from (loops per clock) to (loops per millisecond).
|
|
*/
|
|
msec_loops *= CLOCKS_PER_SEC;
|
|
msec_loops /= 1000;
|
|
}
|
|
|
|
/*
|
|
* Delay for a specified number of milliseconds.
|
|
*/
|
|
static void
|
|
dummy_func()
|
|
{
|
|
static long delay_dummy = 0;
|
|
delay_dummy++;
|
|
}
|
|
|
|
static void
|
|
delay(msec)
|
|
int msec;
|
|
{
|
|
long i;
|
|
|
|
while (msec-- > 0)
|
|
{
|
|
for (i = 0; i < msec_loops; i++)
|
|
{
|
|
/*
|
|
* Make it look like we're doing something here,
|
|
* so the optimizer doesn't remove the whole loop.
|
|
*/
|
|
dummy_func();
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* Return the characters actually input by a "special" key.
|
|
*/
|
|
public char *
|
|
special_key_str(key)
|
|
int key;
|
|
{
|
|
static char tbuf[40];
|
|
char *s;
|
|
#if MSDOS_COMPILER || OS2
|
|
static char k_right[] = { '\340', PCK_RIGHT, 0 };
|
|
static char k_left[] = { '\340', PCK_LEFT, 0 };
|
|
static char k_ctl_right[] = { '\340', PCK_CTL_RIGHT, 0 };
|
|
static char k_ctl_left[] = { '\340', PCK_CTL_LEFT, 0 };
|
|
static char k_insert[] = { '\340', PCK_INSERT, 0 };
|
|
static char k_delete[] = { '\340', PCK_DELETE, 0 };
|
|
static char k_ctl_delete[] = { '\340', PCK_CTL_DELETE, 0 };
|
|
static char k_ctl_backspace[] = { '\177', 0 };
|
|
static char k_home[] = { '\340', PCK_HOME, 0 };
|
|
static char k_end[] = { '\340', PCK_END, 0 };
|
|
static char k_up[] = { '\340', PCK_UP, 0 };
|
|
static char k_down[] = { '\340', PCK_DOWN, 0 };
|
|
static char k_backtab[] = { '\340', PCK_SHIFT_TAB, 0 };
|
|
static char k_pagedown[] = { '\340', PCK_PAGEDOWN, 0 };
|
|
static char k_pageup[] = { '\340', PCK_PAGEUP, 0 };
|
|
static char k_f1[] = { '\340', PCK_F1, 0 };
|
|
#endif
|
|
#if !MSDOS_COMPILER
|
|
char *sp = tbuf;
|
|
#endif
|
|
|
|
switch (key)
|
|
{
|
|
#if OS2
|
|
/*
|
|
* If windowid is not NULL, assume less is executed in
|
|
* the XFree86 environment.
|
|
*/
|
|
case SK_RIGHT_ARROW:
|
|
s = windowid ? ltgetstr("kr", &sp) : k_right;
|
|
break;
|
|
case SK_LEFT_ARROW:
|
|
s = windowid ? ltgetstr("kl", &sp) : k_left;
|
|
break;
|
|
case SK_UP_ARROW:
|
|
s = windowid ? ltgetstr("ku", &sp) : k_up;
|
|
break;
|
|
case SK_DOWN_ARROW:
|
|
s = windowid ? ltgetstr("kd", &sp) : k_down;
|
|
break;
|
|
case SK_PAGE_UP:
|
|
s = windowid ? ltgetstr("kP", &sp) : k_pageup;
|
|
break;
|
|
case SK_PAGE_DOWN:
|
|
s = windowid ? ltgetstr("kN", &sp) : k_pagedown;
|
|
break;
|
|
case SK_HOME:
|
|
s = windowid ? ltgetstr("kh", &sp) : k_home;
|
|
break;
|
|
case SK_END:
|
|
s = windowid ? ltgetstr("@7", &sp) : k_end;
|
|
break;
|
|
case SK_DELETE:
|
|
if (windowid)
|
|
{
|
|
s = ltgetstr("kD", &sp);
|
|
if (s == NULL)
|
|
{
|
|
tbuf[0] = '\177';
|
|
tbuf[1] = '\0';
|
|
s = tbuf;
|
|
}
|
|
} else
|
|
s = k_delete;
|
|
break;
|
|
#endif
|
|
#if MSDOS_COMPILER
|
|
case SK_RIGHT_ARROW:
|
|
s = k_right;
|
|
break;
|
|
case SK_LEFT_ARROW:
|
|
s = k_left;
|
|
break;
|
|
case SK_UP_ARROW:
|
|
s = k_up;
|
|
break;
|
|
case SK_DOWN_ARROW:
|
|
s = k_down;
|
|
break;
|
|
case SK_PAGE_UP:
|
|
s = k_pageup;
|
|
break;
|
|
case SK_PAGE_DOWN:
|
|
s = k_pagedown;
|
|
break;
|
|
case SK_HOME:
|
|
s = k_home;
|
|
break;
|
|
case SK_END:
|
|
s = k_end;
|
|
break;
|
|
case SK_DELETE:
|
|
s = k_delete;
|
|
break;
|
|
#endif
|
|
#if MSDOS_COMPILER || OS2
|
|
case SK_INSERT:
|
|
s = k_insert;
|
|
break;
|
|
case SK_CTL_LEFT_ARROW:
|
|
s = k_ctl_left;
|
|
break;
|
|
case SK_CTL_RIGHT_ARROW:
|
|
s = k_ctl_right;
|
|
break;
|
|
case SK_CTL_BACKSPACE:
|
|
s = k_ctl_backspace;
|
|
break;
|
|
case SK_CTL_DELETE:
|
|
s = k_ctl_delete;
|
|
break;
|
|
case SK_F1:
|
|
s = k_f1;
|
|
break;
|
|
case SK_BACKTAB:
|
|
s = k_backtab;
|
|
break;
|
|
#else
|
|
case SK_RIGHT_ARROW:
|
|
s = ltgetstr("kr", &sp);
|
|
break;
|
|
case SK_LEFT_ARROW:
|
|
s = ltgetstr("kl", &sp);
|
|
break;
|
|
case SK_UP_ARROW:
|
|
s = ltgetstr("ku", &sp);
|
|
break;
|
|
case SK_DOWN_ARROW:
|
|
s = ltgetstr("kd", &sp);
|
|
break;
|
|
case SK_PAGE_UP:
|
|
s = ltgetstr("kP", &sp);
|
|
break;
|
|
case SK_PAGE_DOWN:
|
|
s = ltgetstr("kN", &sp);
|
|
break;
|
|
case SK_HOME:
|
|
s = ltgetstr("kh", &sp);
|
|
break;
|
|
case SK_END:
|
|
s = ltgetstr("@7", &sp);
|
|
break;
|
|
case SK_DELETE:
|
|
s = ltgetstr("kD", &sp);
|
|
if (s == NULL)
|
|
{
|
|
tbuf[0] = '\177';
|
|
tbuf[1] = '\0';
|
|
s = tbuf;
|
|
}
|
|
break;
|
|
#endif
|
|
case SK_CONTROL_K:
|
|
tbuf[0] = CONTROL('K');
|
|
tbuf[1] = '\0';
|
|
s = tbuf;
|
|
break;
|
|
default:
|
|
return (NULL);
|
|
}
|
|
return (s);
|
|
}
|
|
|
|
/*
|
|
* Get terminal capabilities via termcap.
|
|
*/
|
|
public void
|
|
get_term()
|
|
{
|
|
#if MSDOS_COMPILER
|
|
auto_wrap = 1;
|
|
ignaw = 0;
|
|
can_goto_line = 1;
|
|
clear_bg = 1;
|
|
/*
|
|
* Set up default colors.
|
|
* The xx_s_width and xx_e_width vars are already initialized to 0.
|
|
*/
|
|
#if MSDOS_COMPILER==MSOFTC
|
|
sy_bg_color = _getbkcolor();
|
|
sy_fg_color = _gettextcolor();
|
|
get_clock();
|
|
#else
|
|
#if MSDOS_COMPILER==BORLANDC || MSDOS_COMPILER==DJGPPC
|
|
{
|
|
struct text_info w;
|
|
gettextinfo(&w);
|
|
sy_bg_color = (w.attribute >> 4) & 0x0F;
|
|
sy_fg_color = (w.attribute >> 0) & 0x0F;
|
|
}
|
|
#else
|
|
#if MSDOS_COMPILER==WIN32C
|
|
{
|
|
DWORD nread;
|
|
CONSOLE_SCREEN_BUFFER_INFO scr;
|
|
|
|
con_out_save = con_out = GetStdHandle(STD_OUTPUT_HANDLE);
|
|
/*
|
|
* Always open stdin in binary. Note this *must* be done
|
|
* before any file operations have been done on fd0.
|
|
*/
|
|
SET_BINARY(0);
|
|
GetConsoleScreenBufferInfo(con_out, &scr);
|
|
ReadConsoleOutputAttribute(con_out, &curr_attr,
|
|
1, scr.dwCursorPosition, &nread);
|
|
sy_bg_color = (curr_attr & BG_COLORS) >> 4; /* normalize */
|
|
sy_fg_color = curr_attr & FG_COLORS;
|
|
}
|
|
#endif
|
|
#endif
|
|
#endif
|
|
nm_fg_color = sy_fg_color;
|
|
nm_bg_color = sy_bg_color;
|
|
bo_fg_color = 11;
|
|
bo_bg_color = 0;
|
|
ul_fg_color = 9;
|
|
ul_bg_color = 0;
|
|
so_fg_color = 15;
|
|
so_bg_color = 9;
|
|
bl_fg_color = 15;
|
|
bl_bg_color = 0;
|
|
|
|
/*
|
|
* Get size of the screen.
|
|
*/
|
|
scrsize();
|
|
pos_init();
|
|
|
|
|
|
#else /* !MSDOS_COMPILER */
|
|
|
|
char *sp;
|
|
register char *t1, *t2;
|
|
char *term;
|
|
char termbuf[TERMBUF_SIZE];
|
|
|
|
static char sbuf[TERMSBUF_SIZE];
|
|
|
|
#if OS2
|
|
/*
|
|
* Make sure the termcap database is available.
|
|
*/
|
|
sp = lgetenv("TERMCAP");
|
|
if (sp == NULL || *sp == '\0')
|
|
{
|
|
char *termcap;
|
|
if ((sp = homefile("termcap.dat")) != NULL)
|
|
{
|
|
termcap = (char *) ecalloc(strlen(sp)+9, sizeof(char));
|
|
sprintf(termcap, "TERMCAP=%s", sp);
|
|
free(sp);
|
|
putenv(termcap);
|
|
}
|
|
}
|
|
#endif
|
|
/*
|
|
* Find out what kind of terminal this is.
|
|
*/
|
|
if ((term = lgetenv("TERM")) == NULL)
|
|
term = DEFAULT_TERM;
|
|
hardcopy = 0;
|
|
if (tgetent(termbuf, term) != TGETENT_OK)
|
|
hardcopy = 1;
|
|
if (ltgetflag("hc"))
|
|
hardcopy = 1;
|
|
|
|
/*
|
|
* Get size of the screen.
|
|
*/
|
|
scrsize();
|
|
pos_init();
|
|
|
|
auto_wrap = ltgetflag("am");
|
|
ignaw = ltgetflag("xn");
|
|
above_mem = ltgetflag("da");
|
|
below_mem = ltgetflag("db");
|
|
clear_bg = ltgetflag("ut");
|
|
|
|
/*
|
|
* Assumes termcap variable "sg" is the printing width of:
|
|
* the standout sequence, the end standout sequence,
|
|
* the underline sequence, the end underline sequence,
|
|
* the boldface sequence, and the end boldface sequence.
|
|
*/
|
|
if ((so_s_width = ltgetnum("sg")) < 0)
|
|
so_s_width = 0;
|
|
so_e_width = so_s_width;
|
|
|
|
bo_s_width = bo_e_width = so_s_width;
|
|
ul_s_width = ul_e_width = so_s_width;
|
|
bl_s_width = bl_e_width = so_s_width;
|
|
|
|
#if HILITE_SEARCH
|
|
if (so_s_width > 0 || so_e_width > 0)
|
|
/*
|
|
* Disable highlighting by default on magic cookie terminals.
|
|
* Turning on highlighting might change the displayed width
|
|
* of a line, causing the display to get messed up.
|
|
* The user can turn it back on with -g,
|
|
* but she won't like the results.
|
|
*/
|
|
hilite_search = 0;
|
|
#endif
|
|
|
|
/*
|
|
* Get various string-valued capabilities.
|
|
*/
|
|
sp = sbuf;
|
|
|
|
#if HAVE_OSPEED
|
|
sc_pad = ltgetstr("pc", &sp);
|
|
if (sc_pad != NULL)
|
|
PC = *sc_pad;
|
|
#endif
|
|
|
|
sc_s_keypad = ltgetstr("ks", &sp);
|
|
if (sc_s_keypad == NULL)
|
|
sc_s_keypad = "";
|
|
sc_e_keypad = ltgetstr("ke", &sp);
|
|
if (sc_e_keypad == NULL)
|
|
sc_e_keypad = "";
|
|
|
|
sc_init = ltgetstr("ti", &sp);
|
|
if (sc_init == NULL)
|
|
sc_init = "";
|
|
|
|
sc_deinit= ltgetstr("te", &sp);
|
|
if (sc_deinit == NULL)
|
|
sc_deinit = "";
|
|
|
|
sc_eol_clear = ltgetstr("ce", &sp);
|
|
if (sc_eol_clear == NULL || *sc_eol_clear == '\0')
|
|
{
|
|
missing_cap = 1;
|
|
sc_eol_clear = "";
|
|
}
|
|
|
|
sc_eos_clear = ltgetstr("cd", &sp);
|
|
if (below_mem && (sc_eos_clear == NULL || *sc_eos_clear == '\0'))
|
|
{
|
|
missing_cap = 1;
|
|
sc_eos_clear = "";
|
|
}
|
|
|
|
sc_clear = ltgetstr("cl", &sp);
|
|
if (sc_clear == NULL || *sc_clear == '\0')
|
|
{
|
|
missing_cap = 1;
|
|
sc_clear = "\n\n";
|
|
}
|
|
|
|
sc_move = ltgetstr("cm", &sp);
|
|
if (sc_move == NULL || *sc_move == '\0')
|
|
{
|
|
/*
|
|
* This is not an error here, because we don't
|
|
* always need sc_move.
|
|
* We need it only if we don't have home or lower-left.
|
|
*/
|
|
sc_move = "";
|
|
can_goto_line = 0;
|
|
} else
|
|
can_goto_line = 1;
|
|
|
|
tmodes("so", "se", &sc_s_in, &sc_s_out, "", "", &sp);
|
|
tmodes("us", "ue", &sc_u_in, &sc_u_out, sc_s_in, sc_s_out, &sp);
|
|
tmodes("md", "me", &sc_b_in, &sc_b_out, sc_s_in, sc_s_out, &sp);
|
|
tmodes("mb", "me", &sc_bl_in, &sc_bl_out, sc_s_in, sc_s_out, &sp);
|
|
|
|
sc_visual_bell = ltgetstr("vb", &sp);
|
|
if (sc_visual_bell == NULL)
|
|
sc_visual_bell = "";
|
|
|
|
if (ltgetflag("bs"))
|
|
sc_backspace = "\b";
|
|
else
|
|
{
|
|
sc_backspace = ltgetstr("bc", &sp);
|
|
if (sc_backspace == NULL || *sc_backspace == '\0')
|
|
sc_backspace = "\b";
|
|
}
|
|
|
|
/*
|
|
* Choose between using "ho" and "cm" ("home" and "cursor move")
|
|
* to move the cursor to the upper left corner of the screen.
|
|
*/
|
|
t1 = ltgetstr("ho", &sp);
|
|
if (t1 == NULL)
|
|
t1 = "";
|
|
if (*sc_move == '\0')
|
|
t2 = "";
|
|
else
|
|
{
|
|
strcpy(sp, tgoto(sc_move, 0, 0));
|
|
t2 = sp;
|
|
sp += strlen(sp) + 1;
|
|
}
|
|
sc_home = cheaper(t1, t2, "|\b^");
|
|
|
|
/*
|
|
* Choose between using "ll" and "cm" ("lower left" and "cursor move")
|
|
* to move the cursor to the lower left corner of the screen.
|
|
*/
|
|
t1 = ltgetstr("ll", &sp);
|
|
if (t1 == NULL)
|
|
t1 = "";
|
|
if (*sc_move == '\0')
|
|
t2 = "";
|
|
else
|
|
{
|
|
strcpy(sp, tgoto(sc_move, 0, sc_height-1));
|
|
t2 = sp;
|
|
sp += strlen(sp) + 1;
|
|
}
|
|
sc_lower_left = cheaper(t1, t2, "\r");
|
|
|
|
/*
|
|
* Get carriage return string.
|
|
*/
|
|
sc_return = ltgetstr("cr", &sp);
|
|
if (sc_return == NULL)
|
|
sc_return = "\r";
|
|
|
|
/*
|
|
* Choose between using "al" or "sr" ("add line" or "scroll reverse")
|
|
* to add a line at the top of the screen.
|
|
*/
|
|
t1 = ltgetstr("al", &sp);
|
|
if (t1 == NULL)
|
|
t1 = "";
|
|
t2 = ltgetstr("sr", &sp);
|
|
if (t2 == NULL)
|
|
t2 = "";
|
|
#if OS2
|
|
if (*t1 == '\0' && *t2 == '\0')
|
|
sc_addline = "";
|
|
else
|
|
#endif
|
|
if (above_mem)
|
|
sc_addline = t1;
|
|
else
|
|
sc_addline = cheaper(t1, t2, "");
|
|
if (*sc_addline == '\0')
|
|
{
|
|
/*
|
|
* Force repaint on any backward movement.
|
|
*/
|
|
no_back_scroll = 1;
|
|
}
|
|
#endif /* MSDOS_COMPILER */
|
|
}
|
|
|
|
#if !MSDOS_COMPILER
|
|
/*
|
|
* Return the cost of displaying a termcap string.
|
|
* We use the trick of calling tputs, but as a char printing function
|
|
* we give it inc_costcount, which just increments "costcount".
|
|
* This tells us how many chars would be printed by using this string.
|
|
* {{ Couldn't we just use strlen? }}
|
|
*/
|
|
static int costcount;
|
|
|
|
/*ARGSUSED*/
|
|
static int
|
|
inc_costcount(c)
|
|
int c;
|
|
{
|
|
costcount++;
|
|
return (c);
|
|
}
|
|
|
|
static int
|
|
cost(t)
|
|
char *t;
|
|
{
|
|
costcount = 0;
|
|
tputs(t, sc_height, inc_costcount);
|
|
return (costcount);
|
|
}
|
|
|
|
/*
|
|
* Return the "best" of the two given termcap strings.
|
|
* The best, if both exist, is the one with the lower
|
|
* cost (see cost() function).
|
|
*/
|
|
static char *
|
|
cheaper(t1, t2, def)
|
|
char *t1, *t2;
|
|
char *def;
|
|
{
|
|
if (*t1 == '\0' && *t2 == '\0')
|
|
{
|
|
missing_cap = 1;
|
|
return (def);
|
|
}
|
|
if (*t1 == '\0')
|
|
return (t2);
|
|
if (*t2 == '\0')
|
|
return (t1);
|
|
if (cost(t1) < cost(t2))
|
|
return (t1);
|
|
return (t2);
|
|
}
|
|
|
|
static void
|
|
tmodes(incap, outcap, instr, outstr, def_instr, def_outstr, spp)
|
|
char *incap;
|
|
char *outcap;
|
|
char **instr;
|
|
char **outstr;
|
|
char *def_instr;
|
|
char *def_outstr;
|
|
char **spp;
|
|
{
|
|
*instr = ltgetstr(incap, spp);
|
|
if (*instr == NULL)
|
|
{
|
|
/* Use defaults. */
|
|
*instr = def_instr;
|
|
*outstr = def_outstr;
|
|
return;
|
|
}
|
|
|
|
*outstr = ltgetstr(outcap, spp);
|
|
if (*outstr == NULL)
|
|
/* No specific out capability; use "me". */
|
|
*outstr = ltgetstr("me", spp);
|
|
if (*outstr == NULL)
|
|
/* Don't even have "me"; use a null string. */
|
|
*outstr = "";
|
|
}
|
|
|
|
#endif /* MSDOS_COMPILER */
|
|
|
|
|
|
/*
|
|
* Below are the functions which perform all the
|
|
* terminal-specific screen manipulation.
|
|
*/
|
|
|
|
|
|
#if MSDOS_COMPILER
|
|
|
|
#if MSDOS_COMPILER==WIN32C
|
|
static void
|
|
_settextposition(int row, int col)
|
|
{
|
|
COORD cpos;
|
|
CONSOLE_SCREEN_BUFFER_INFO csbi;
|
|
|
|
GetConsoleScreenBufferInfo(con_out, &csbi);
|
|
cpos.X = csbi.srWindow.Left + (col - 1);
|
|
cpos.Y = csbi.srWindow.Top + (row - 1);
|
|
SetConsoleCursorPosition(con_out, cpos);
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* Initialize the screen to the correct color at startup.
|
|
*/
|
|
static void
|
|
initcolor()
|
|
{
|
|
SETCOLORS(nm_fg_color, nm_bg_color);
|
|
#if 0
|
|
/*
|
|
* This clears the screen at startup. This is different from
|
|
* the behavior of other versions of less. Disable it for now.
|
|
*/
|
|
char *blanks;
|
|
int row;
|
|
int col;
|
|
|
|
/*
|
|
* Create a complete, blank screen using "normal" colors.
|
|
*/
|
|
SETCOLORS(nm_fg_color, nm_bg_color);
|
|
blanks = (char *) ecalloc(width+1, sizeof(char));
|
|
for (col = 0; col < sc_width; col++)
|
|
blanks[col] = ' ';
|
|
blanks[sc_width] = '\0';
|
|
for (row = 0; row < sc_height; row++)
|
|
_outtext(blanks);
|
|
free(blanks);
|
|
#endif
|
|
}
|
|
#endif
|
|
|
|
#if MSDOS_COMPILER==WIN32C
|
|
|
|
/*
|
|
* Termcap-like init with a private win32 console.
|
|
*/
|
|
static void
|
|
win32_init_term()
|
|
{
|
|
CONSOLE_SCREEN_BUFFER_INFO scr;
|
|
COORD size;
|
|
|
|
if (con_out_save == INVALID_HANDLE_VALUE)
|
|
return;
|
|
|
|
GetConsoleScreenBufferInfo(con_out_save, &scr);
|
|
|
|
if (con_out_ours == INVALID_HANDLE_VALUE)
|
|
{
|
|
/*
|
|
* Create our own screen buffer, so that we
|
|
* may restore the original when done.
|
|
*/
|
|
con_out_ours = CreateConsoleScreenBuffer(
|
|
GENERIC_WRITE | GENERIC_READ,
|
|
FILE_SHARE_WRITE | FILE_SHARE_READ,
|
|
(LPSECURITY_ATTRIBUTES) NULL,
|
|
CONSOLE_TEXTMODE_BUFFER,
|
|
(LPVOID) NULL);
|
|
}
|
|
|
|
size.X = scr.srWindow.Right - scr.srWindow.Left + 1;
|
|
size.Y = scr.srWindow.Bottom - scr.srWindow.Top + 1;
|
|
SetConsoleScreenBufferSize(con_out_ours, size);
|
|
SetConsoleActiveScreenBuffer(con_out_ours);
|
|
con_out = con_out_ours;
|
|
}
|
|
|
|
/*
|
|
* Restore the startup console.
|
|
*/
|
|
static void
|
|
win32_deinit_term()
|
|
{
|
|
if (con_out_save == INVALID_HANDLE_VALUE)
|
|
return;
|
|
if (quitting)
|
|
(void) CloseHandle(con_out_ours);
|
|
SetConsoleActiveScreenBuffer(con_out_save);
|
|
con_out = con_out_save;
|
|
}
|
|
|
|
#endif
|
|
|
|
/*
|
|
* Initialize terminal
|
|
*/
|
|
public void
|
|
init()
|
|
{
|
|
#if !MSDOS_COMPILER
|
|
if (!no_init)
|
|
tputs(sc_init, sc_height, putchr);
|
|
if (!no_keypad)
|
|
tputs(sc_s_keypad, sc_height, putchr);
|
|
if (top_scroll)
|
|
{
|
|
int i;
|
|
|
|
/*
|
|
* This is nice to terminals with no alternate screen,
|
|
* but with saved scrolled-off-the-top lines. This way,
|
|
* no previous line is lost, but we start with a whole
|
|
* screen to ourself.
|
|
*/
|
|
for (i = 1; i < sc_height; i++)
|
|
putchr('\n');
|
|
}
|
|
#else
|
|
#if MSDOS_COMPILER==WIN32C
|
|
if (!no_init)
|
|
win32_init_term();
|
|
#endif
|
|
initcolor();
|
|
flush();
|
|
#endif
|
|
init_done = 1;
|
|
}
|
|
|
|
/*
|
|
* Deinitialize terminal
|
|
*/
|
|
public void
|
|
deinit()
|
|
{
|
|
if (!init_done)
|
|
return;
|
|
#if !MSDOS_COMPILER
|
|
if (!no_keypad)
|
|
tputs(sc_e_keypad, sc_height, putchr);
|
|
if (!no_init)
|
|
tputs(sc_deinit, sc_height, putchr);
|
|
#else
|
|
/* Restore system colors. */
|
|
SETCOLORS(sy_fg_color, sy_bg_color);
|
|
#if MSDOS_COMPILER==WIN32C
|
|
if (!no_init)
|
|
win32_deinit_term();
|
|
#else
|
|
/* Need clreol to make SETCOLORS take effect. */
|
|
clreol();
|
|
#endif
|
|
#endif
|
|
init_done = 0;
|
|
}
|
|
|
|
/*
|
|
* Home cursor (move to upper left corner of screen).
|
|
*/
|
|
public void
|
|
home()
|
|
{
|
|
#if !MSDOS_COMPILER
|
|
tputs(sc_home, 1, putchr);
|
|
#else
|
|
flush();
|
|
_settextposition(1,1);
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* Add a blank line (called with cursor at home).
|
|
* Should scroll the display down.
|
|
*/
|
|
public void
|
|
add_line()
|
|
{
|
|
#if !MSDOS_COMPILER
|
|
tputs(sc_addline, sc_height, putchr);
|
|
#else
|
|
flush();
|
|
#if MSDOS_COMPILER==MSOFTC
|
|
_scrolltextwindow(_GSCROLLDOWN);
|
|
_settextposition(1,1);
|
|
#else
|
|
#if MSDOS_COMPILER==BORLANDC || MSDOS_COMPILER==DJGPPC
|
|
movetext(1,1, sc_width,sc_height-1, 1,2);
|
|
gotoxy(1,1);
|
|
clreol();
|
|
#else
|
|
#if MSDOS_COMPILER==WIN32C
|
|
{
|
|
CHAR_INFO fillchar;
|
|
SMALL_RECT rcSrc, rcClip;
|
|
COORD new_org;
|
|
CONSOLE_SCREEN_BUFFER_INFO csbi;
|
|
|
|
GetConsoleScreenBufferInfo(con_out,&csbi);
|
|
|
|
/* The clip rectangle is the entire visible screen. */
|
|
rcClip.Left = csbi.srWindow.Left;
|
|
rcClip.Top = csbi.srWindow.Top;
|
|
rcClip.Right = csbi.srWindow.Right;
|
|
rcClip.Bottom = csbi.srWindow.Bottom;
|
|
|
|
/* The source rectangle is the visible screen minus the last line. */
|
|
rcSrc = rcClip;
|
|
rcSrc.Bottom--;
|
|
|
|
/* Move the top left corner of the source window down one row. */
|
|
new_org.X = rcSrc.Left;
|
|
new_org.Y = rcSrc.Top + 1;
|
|
|
|
/* Fill the right character and attributes. */
|
|
fillchar.Char.AsciiChar = ' ';
|
|
curr_attr = MAKEATTR(nm_fg_color, nm_bg_color);
|
|
fillchar.Attributes = curr_attr;
|
|
ScrollConsoleScreenBuffer(con_out, &rcSrc, &rcClip, new_org, &fillchar);
|
|
_settextposition(1,1);
|
|
}
|
|
#endif
|
|
#endif
|
|
#endif
|
|
#endif
|
|
}
|
|
|
|
#if 0
|
|
/*
|
|
* Remove the n topmost lines and scroll everything below it in the
|
|
* window upward. This is needed to stop leaking the topmost line
|
|
* into the scrollback buffer when we go down-one-line (in WIN32).
|
|
*/
|
|
public void
|
|
remove_top(n)
|
|
int n;
|
|
{
|
|
#if MSDOS_COMPILER==WIN32C
|
|
SMALL_RECT rcSrc, rcClip;
|
|
CHAR_INFO fillchar;
|
|
COORD new_org;
|
|
CONSOLE_SCREEN_BUFFER_INFO csbi; /* to get buffer info */
|
|
|
|
if (n >= sc_height - 1)
|
|
{
|
|
clear();
|
|
home();
|
|
return;
|
|
}
|
|
|
|
flush();
|
|
|
|
GetConsoleScreenBufferInfo(con_out, &csbi);
|
|
|
|
/* Get the extent of all-visible-rows-but-the-last. */
|
|
rcSrc.Left = csbi.srWindow.Left;
|
|
rcSrc.Top = csbi.srWindow.Top + n;
|
|
rcSrc.Right = csbi.srWindow.Right;
|
|
rcSrc.Bottom = csbi.srWindow.Bottom;
|
|
|
|
/* Get the clip rectangle. */
|
|
rcClip.Left = rcSrc.Left;
|
|
rcClip.Top = csbi.srWindow.Top;
|
|
rcClip.Right = rcSrc.Right;
|
|
rcClip.Bottom = rcSrc.Bottom ;
|
|
|
|
/* Move the source window up n rows. */
|
|
new_org.X = rcSrc.Left;
|
|
new_org.Y = rcSrc.Top - n;
|
|
|
|
/* Fill the right character and attributes. */
|
|
fillchar.Char.AsciiChar = ' ';
|
|
curr_attr = MAKEATTR(nm_fg_color, nm_bg_color);
|
|
fillchar.Attributes = curr_attr;
|
|
|
|
ScrollConsoleScreenBuffer(con_out, &rcSrc, &rcClip, new_org, &fillchar);
|
|
|
|
/* Position cursor on first blank line. */
|
|
goto_line(sc_height - n - 1);
|
|
#endif
|
|
}
|
|
#endif
|
|
|
|
#if MSDOS_COMPILER==WIN32C
|
|
/*
|
|
* Clear the screen.
|
|
*/
|
|
static void
|
|
win32_clear()
|
|
{
|
|
/*
|
|
* This will clear only the currently visible rows of the NT
|
|
* console buffer, which means none of the precious scrollback
|
|
* rows are touched making for faster scrolling. Note that, if
|
|
* the window has fewer columns than the console buffer (i.e.
|
|
* there is a horizontal scrollbar as well), the entire width
|
|
* of the visible rows will be cleared.
|
|
*/
|
|
COORD topleft;
|
|
DWORD nchars;
|
|
DWORD winsz;
|
|
CONSOLE_SCREEN_BUFFER_INFO csbi;
|
|
|
|
/* get the number of cells in the current buffer */
|
|
GetConsoleScreenBufferInfo(con_out, &csbi);
|
|
winsz = csbi.dwSize.X * (csbi.srWindow.Bottom - csbi.srWindow.Top + 1);
|
|
topleft.X = 0;
|
|
topleft.Y = csbi.srWindow.Top;
|
|
|
|
curr_attr = MAKEATTR(nm_fg_color, nm_bg_color);
|
|
FillConsoleOutputCharacter(con_out, ' ', winsz, topleft, &nchars);
|
|
FillConsoleOutputAttribute(con_out, curr_attr, winsz, topleft, &nchars);
|
|
}
|
|
|
|
/*
|
|
* Remove the n topmost lines and scroll everything below it in the
|
|
* window upward.
|
|
*/
|
|
public void
|
|
win32_scroll_up(n)
|
|
int n;
|
|
{
|
|
SMALL_RECT rcSrc, rcClip;
|
|
CHAR_INFO fillchar;
|
|
COORD topleft;
|
|
COORD new_org;
|
|
DWORD nchars;
|
|
DWORD size;
|
|
CONSOLE_SCREEN_BUFFER_INFO csbi;
|
|
|
|
if (n <= 0)
|
|
return;
|
|
|
|
if (n >= sc_height - 1)
|
|
{
|
|
win32_clear();
|
|
_settextposition(1,1);
|
|
return;
|
|
}
|
|
|
|
/* Get the extent of what will remain visible after scrolling. */
|
|
GetConsoleScreenBufferInfo(con_out, &csbi);
|
|
rcSrc.Left = csbi.srWindow.Left;
|
|
rcSrc.Top = csbi.srWindow.Top + n;
|
|
rcSrc.Right = csbi.srWindow.Right;
|
|
rcSrc.Bottom = csbi.srWindow.Bottom;
|
|
|
|
/* Get the clip rectangle. */
|
|
rcClip.Left = rcSrc.Left;
|
|
rcClip.Top = csbi.srWindow.Top;
|
|
rcClip.Right = rcSrc.Right;
|
|
rcClip.Bottom = rcSrc.Bottom ;
|
|
|
|
/* Move the source text to the top of the screen. */
|
|
new_org.X = rcSrc.Left;
|
|
new_org.Y = 0;
|
|
|
|
/* Fill the right character and attributes. */
|
|
fillchar.Char.AsciiChar = ' ';
|
|
fillchar.Attributes = MAKEATTR(nm_fg_color, nm_bg_color);
|
|
|
|
/* Scroll the window. */
|
|
SetConsoleTextAttribute(con_out, fillchar.Attributes);
|
|
ScrollConsoleScreenBuffer(con_out, &rcSrc, &rcClip, new_org, &fillchar);
|
|
|
|
/* Clear remaining lines at bottom. */
|
|
topleft.X = csbi.dwCursorPosition.X;
|
|
topleft.Y = rcSrc.Bottom - n;
|
|
size = (n * csbi.dwSize.X) + (rcSrc.Right - topleft.X);
|
|
FillConsoleOutputCharacter(con_out, ' ', size, topleft,
|
|
&nchars);
|
|
FillConsoleOutputAttribute(con_out, fillchar.Attributes, size, topleft,
|
|
&nchars);
|
|
SetConsoleTextAttribute(con_out, curr_attr);
|
|
|
|
/* Move cursor n lines up from where it was. */
|
|
csbi.dwCursorPosition.Y -= n;
|
|
SetConsoleCursorPosition(con_out, csbi.dwCursorPosition);
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* Move cursor to lower left corner of screen.
|
|
*/
|
|
public void
|
|
lower_left()
|
|
{
|
|
#if !MSDOS_COMPILER
|
|
tputs(sc_lower_left, 1, putchr);
|
|
#else
|
|
flush();
|
|
_settextposition(sc_height, 1);
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* Move cursor to left position of current line.
|
|
*/
|
|
public void
|
|
line_left()
|
|
{
|
|
#if !MSDOS_COMPILER
|
|
tputs(sc_return, 1, putchr);
|
|
#else
|
|
int row;
|
|
flush();
|
|
#if MSDOS_COMPILER==WIN32C
|
|
{
|
|
CONSOLE_SCREEN_BUFFER_INFO scr;
|
|
GetConsoleScreenBufferInfo(con_out, &scr);
|
|
row = scr.dwCursorPosition.Y - scr.srWindow.Top + 1;
|
|
}
|
|
#else
|
|
#if MSDOS_COMPILER==BORLANDC || MSDOS_COMPILER==DJGPPC
|
|
row = wherey();
|
|
#else
|
|
{
|
|
struct rccoord tpos = _gettextposition();
|
|
row = tpos.row;
|
|
}
|
|
#endif
|
|
#endif
|
|
_settextposition(row, 1);
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* Check if the console size has changed and reset internals
|
|
* (in lieu of SIGWINCH for WIN32).
|
|
*/
|
|
public void
|
|
check_winch()
|
|
{
|
|
#if MSDOS_COMPILER==WIN32C
|
|
CONSOLE_SCREEN_BUFFER_INFO scr;
|
|
COORD size;
|
|
|
|
if (con_out == INVALID_HANDLE_VALUE)
|
|
return;
|
|
|
|
flush();
|
|
GetConsoleScreenBufferInfo(con_out, &scr);
|
|
size.Y = scr.srWindow.Bottom - scr.srWindow.Top + 1;
|
|
size.X = scr.srWindow.Right - scr.srWindow.Left + 1;
|
|
if (size.Y != sc_height || size.X != sc_width)
|
|
{
|
|
sc_height = size.Y;
|
|
sc_width = size.X;
|
|
if (!no_init && con_out_ours == con_out)
|
|
SetConsoleScreenBufferSize(con_out, size);
|
|
pos_init();
|
|
wscroll = (sc_height + 1) / 2;
|
|
screen_trashed = 1;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* Goto a specific line on the screen.
|
|
*/
|
|
public void
|
|
goto_line(slinenum)
|
|
int slinenum;
|
|
{
|
|
#if !MSDOS_COMPILER
|
|
tputs(tgoto(sc_move, 0, slinenum), 1, putchr);
|
|
#else
|
|
flush();
|
|
_settextposition(slinenum+1, 1);
|
|
#endif
|
|
}
|
|
|
|
#if MSDOS_COMPILER==MSOFTC || MSDOS_COMPILER==BORLANDC
|
|
/*
|
|
* Create an alternate screen which is all white.
|
|
* This screen is used to create a "flash" effect, by displaying it
|
|
* briefly and then switching back to the normal screen.
|
|
* {{ Yuck! There must be a better way to get a visual bell. }}
|
|
*/
|
|
static void
|
|
create_flash()
|
|
{
|
|
#if MSDOS_COMPILER==MSOFTC
|
|
struct videoconfig w;
|
|
char *blanks;
|
|
int row, col;
|
|
|
|
_getvideoconfig(&w);
|
|
videopages = w.numvideopages;
|
|
if (videopages < 2)
|
|
{
|
|
at_enter(AT_STANDOUT);
|
|
at_exit();
|
|
} else
|
|
{
|
|
_setactivepage(1);
|
|
at_enter(AT_STANDOUT);
|
|
blanks = (char *) ecalloc(w.numtextcols, sizeof(char));
|
|
for (col = 0; col < w.numtextcols; col++)
|
|
blanks[col] = ' ';
|
|
for (row = w.numtextrows; row > 0; row--)
|
|
_outmem(blanks, w.numtextcols);
|
|
_setactivepage(0);
|
|
_setvisualpage(0);
|
|
free(blanks);
|
|
at_exit();
|
|
}
|
|
#else
|
|
#if MSDOS_COMPILER==BORLANDC
|
|
register int n;
|
|
|
|
whitescreen = (unsigned short *)
|
|
malloc(sc_width * sc_height * sizeof(short));
|
|
if (whitescreen == NULL)
|
|
return;
|
|
for (n = 0; n < sc_width * sc_height; n++)
|
|
whitescreen[n] = 0x7020;
|
|
#else
|
|
#if MSDOS_COMPILER==WIN32C
|
|
register int n;
|
|
|
|
whitescreen = (WORD *)
|
|
malloc(sc_height * sc_width * sizeof(WORD));
|
|
if (whitescreen == NULL)
|
|
return;
|
|
/* Invert the standard colors. */
|
|
for (n = 0; n < sc_width * sc_height; n++)
|
|
whitescreen[n] = (WORD)((nm_fg_color << 4) | nm_bg_color);
|
|
#endif
|
|
#endif
|
|
#endif
|
|
flash_created = 1;
|
|
}
|
|
#endif /* MSDOS_COMPILER */
|
|
|
|
/*
|
|
* Output the "visual bell", if there is one.
|
|
*/
|
|
public void
|
|
vbell()
|
|
{
|
|
#if !MSDOS_COMPILER
|
|
if (*sc_visual_bell == '\0')
|
|
return;
|
|
tputs(sc_visual_bell, sc_height, putchr);
|
|
#else
|
|
#if MSDOS_COMPILER==DJGPPC
|
|
ScreenVisualBell();
|
|
#else
|
|
#if MSDOS_COMPILER==MSOFTC
|
|
/*
|
|
* Create a flash screen on the second video page.
|
|
* Switch to that page, then switch back.
|
|
*/
|
|
if (!flash_created)
|
|
create_flash();
|
|
if (videopages < 2)
|
|
return;
|
|
_setvisualpage(1);
|
|
delay(100);
|
|
_setvisualpage(0);
|
|
#else
|
|
#if MSDOS_COMPILER==BORLANDC
|
|
unsigned short *currscreen;
|
|
|
|
/*
|
|
* Get a copy of the current screen.
|
|
* Display the flash screen.
|
|
* Then restore the old screen.
|
|
*/
|
|
if (!flash_created)
|
|
create_flash();
|
|
if (whitescreen == NULL)
|
|
return;
|
|
currscreen = (unsigned short *)
|
|
malloc(sc_width * sc_height * sizeof(short));
|
|
if (currscreen == NULL) return;
|
|
gettext(1, 1, sc_width, sc_height, currscreen);
|
|
puttext(1, 1, sc_width, sc_height, whitescreen);
|
|
delay(100);
|
|
puttext(1, 1, sc_width, sc_height, currscreen);
|
|
free(currscreen);
|
|
#else
|
|
#if MSDOS_COMPILER==WIN32C
|
|
/* paint screen with an inverse color */
|
|
clear();
|
|
|
|
/* leave it displayed for 100 msec. */
|
|
Sleep(100);
|
|
|
|
/* restore with a redraw */
|
|
repaint();
|
|
#endif
|
|
#endif
|
|
#endif
|
|
#endif
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* Make a noise.
|
|
*/
|
|
static void
|
|
beep()
|
|
{
|
|
#if !MSDOS_COMPILER
|
|
putchr(CONTROL('G'));
|
|
#else
|
|
#if MSDOS_COMPILER==WIN32C
|
|
MessageBeep(0);
|
|
#else
|
|
write(1, "\7", 1);
|
|
#endif
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* Ring the terminal bell.
|
|
*/
|
|
public void
|
|
bell()
|
|
{
|
|
if (quiet == VERY_QUIET)
|
|
vbell();
|
|
else
|
|
beep();
|
|
}
|
|
|
|
/*
|
|
* Clear the screen.
|
|
*/
|
|
public void
|
|
clear()
|
|
{
|
|
#if !MSDOS_COMPILER
|
|
tputs(sc_clear, sc_height, putchr);
|
|
#else
|
|
flush();
|
|
#if MSDOS_COMPILER==WIN32C
|
|
win32_clear();
|
|
#else
|
|
_clearscreen(_GCLEARSCREEN);
|
|
#endif
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* Clear from the cursor to the end of the cursor's line.
|
|
* {{ This must not move the cursor. }}
|
|
*/
|
|
public void
|
|
clear_eol()
|
|
{
|
|
#if !MSDOS_COMPILER
|
|
tputs(sc_eol_clear, 1, putchr);
|
|
#else
|
|
#if MSDOS_COMPILER==MSOFTC
|
|
short top, left;
|
|
short bot, right;
|
|
struct rccoord tpos;
|
|
|
|
flush();
|
|
/*
|
|
* Save current state.
|
|
*/
|
|
tpos = _gettextposition();
|
|
_gettextwindow(&top, &left, &bot, &right);
|
|
/*
|
|
* Set a temporary window to the current line,
|
|
* from the cursor's position to the right edge of the screen.
|
|
* Then clear that window.
|
|
*/
|
|
_settextwindow(tpos.row, tpos.col, tpos.row, sc_width);
|
|
_clearscreen(_GWINDOW);
|
|
/*
|
|
* Restore state.
|
|
*/
|
|
_settextwindow(top, left, bot, right);
|
|
_settextposition(tpos.row, tpos.col);
|
|
#else
|
|
#if MSDOS_COMPILER==BORLANDC || MSDOS_COMPILER==DJGPPC
|
|
flush();
|
|
clreol();
|
|
#else
|
|
#if MSDOS_COMPILER==WIN32C
|
|
DWORD nchars;
|
|
COORD cpos;
|
|
CONSOLE_SCREEN_BUFFER_INFO scr;
|
|
|
|
flush();
|
|
memset(&scr, 0, sizeof(scr));
|
|
GetConsoleScreenBufferInfo(con_out, &scr);
|
|
cpos.X = scr.dwCursorPosition.X;
|
|
cpos.Y = scr.dwCursorPosition.Y;
|
|
curr_attr = MAKEATTR(nm_fg_color, nm_bg_color);
|
|
FillConsoleOutputAttribute(con_out, curr_attr,
|
|
scr.dwSize.X - cpos.X, cpos, &nchars);
|
|
FillConsoleOutputCharacter(con_out, ' ',
|
|
scr.dwSize.X - cpos.X, cpos, &nchars);
|
|
#endif
|
|
#endif
|
|
#endif
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* Clear the current line.
|
|
* Clear the screen if there's off-screen memory below the display.
|
|
*/
|
|
static void
|
|
clear_eol_bot()
|
|
{
|
|
#if MSDOS_COMPILER
|
|
clear_eol();
|
|
#else
|
|
if (below_mem)
|
|
tputs(sc_eos_clear, 1, putchr);
|
|
else
|
|
tputs(sc_eol_clear, 1, putchr);
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* Clear the bottom line of the display.
|
|
* Leave the cursor at the beginning of the bottom line.
|
|
*/
|
|
public void
|
|
clear_bot()
|
|
{
|
|
/*
|
|
* If we're in a non-normal attribute mode, temporarily exit
|
|
* the mode while we do the clear. Some terminals fill the
|
|
* cleared area with the current attribute.
|
|
*/
|
|
if (oldbot)
|
|
lower_left();
|
|
else
|
|
line_left();
|
|
|
|
if (attrmode == AT_NORMAL)
|
|
clear_eol_bot();
|
|
else
|
|
{
|
|
int saved_attrmode = attrmode;
|
|
|
|
at_exit();
|
|
clear_eol_bot();
|
|
at_enter(saved_attrmode);
|
|
}
|
|
}
|
|
|
|
public void
|
|
at_enter(attr)
|
|
int attr;
|
|
{
|
|
attr = apply_at_specials(attr);
|
|
|
|
#if !MSDOS_COMPILER
|
|
/* The one with the most priority is last. */
|
|
if (attr & AT_UNDERLINE)
|
|
tputs(sc_u_in, 1, putchr);
|
|
if (attr & AT_BOLD)
|
|
tputs(sc_b_in, 1, putchr);
|
|
if (attr & AT_BLINK)
|
|
tputs(sc_bl_in, 1, putchr);
|
|
if (attr & AT_STANDOUT)
|
|
tputs(sc_s_in, 1, putchr);
|
|
#else
|
|
flush();
|
|
/* The one with the most priority is first. */
|
|
if (attr & AT_STANDOUT)
|
|
{
|
|
SETCOLORS(so_fg_color, so_bg_color);
|
|
} else if (attr & AT_BLINK)
|
|
{
|
|
SETCOLORS(bl_fg_color, bl_bg_color);
|
|
}
|
|
else if (attr & AT_BOLD)
|
|
{
|
|
SETCOLORS(bo_fg_color, bo_bg_color);
|
|
}
|
|
else if (attr & AT_UNDERLINE)
|
|
{
|
|
SETCOLORS(ul_fg_color, ul_bg_color);
|
|
}
|
|
#endif
|
|
|
|
attrmode = attr;
|
|
}
|
|
|
|
public void
|
|
at_exit()
|
|
{
|
|
#if !MSDOS_COMPILER
|
|
/* Undo things in the reverse order we did them. */
|
|
if (attrmode & AT_STANDOUT)
|
|
tputs(sc_s_out, 1, putchr);
|
|
if (attrmode & AT_BLINK)
|
|
tputs(sc_bl_out, 1, putchr);
|
|
if (attrmode & AT_BOLD)
|
|
tputs(sc_b_out, 1, putchr);
|
|
if (attrmode & AT_UNDERLINE)
|
|
tputs(sc_u_out, 1, putchr);
|
|
#else
|
|
flush();
|
|
SETCOLORS(nm_fg_color, nm_bg_color);
|
|
#endif
|
|
|
|
attrmode = AT_NORMAL;
|
|
}
|
|
|
|
public void
|
|
at_switch(attr)
|
|
int attr;
|
|
{
|
|
int new_attrmode = apply_at_specials(attr);
|
|
int ignore_modes = AT_ANSI;
|
|
|
|
if ((new_attrmode & ~ignore_modes) != (attrmode & ~ignore_modes))
|
|
{
|
|
at_exit();
|
|
at_enter(attr);
|
|
}
|
|
}
|
|
|
|
public int
|
|
is_at_equiv(attr1, attr2)
|
|
int attr1;
|
|
int attr2;
|
|
{
|
|
attr1 = apply_at_specials(attr1);
|
|
attr2 = apply_at_specials(attr2);
|
|
|
|
return (attr1 == attr2);
|
|
}
|
|
|
|
public int
|
|
apply_at_specials(attr)
|
|
int attr;
|
|
{
|
|
if (attr & AT_BINARY)
|
|
attr |= binattr;
|
|
if (attr & AT_HILITE)
|
|
attr |= AT_STANDOUT;
|
|
attr &= ~(AT_BINARY|AT_HILITE);
|
|
|
|
return attr;
|
|
}
|
|
|
|
#if 0 /* No longer used */
|
|
/*
|
|
* Erase the character to the left of the cursor
|
|
* and move the cursor left.
|
|
*/
|
|
public void
|
|
backspace()
|
|
{
|
|
#if !MSDOS_COMPILER
|
|
/*
|
|
* Erase the previous character by overstriking with a space.
|
|
*/
|
|
tputs(sc_backspace, 1, putchr);
|
|
putchr(' ');
|
|
tputs(sc_backspace, 1, putchr);
|
|
#else
|
|
#if MSDOS_COMPILER==MSOFTC
|
|
struct rccoord tpos;
|
|
|
|
flush();
|
|
tpos = _gettextposition();
|
|
if (tpos.col <= 1)
|
|
return;
|
|
_settextposition(tpos.row, tpos.col-1);
|
|
_outtext(" ");
|
|
_settextposition(tpos.row, tpos.col-1);
|
|
#else
|
|
#if MSDOS_COMPILER==BORLANDC || MSDOS_COMPILER==DJGPPC
|
|
cputs("\b");
|
|
#else
|
|
#if MSDOS_COMPILER==WIN32C
|
|
COORD cpos;
|
|
DWORD cChars;
|
|
CONSOLE_SCREEN_BUFFER_INFO scr;
|
|
|
|
flush();
|
|
GetConsoleScreenBufferInfo(con_out, &scr);
|
|
cpos = scr.dwCursorPosition;
|
|
if (cpos.X <= 0)
|
|
return;
|
|
cpos.X--;
|
|
SetConsoleCursorPosition(con_out, cpos);
|
|
FillConsoleOutputCharacter(con_out, (TCHAR)' ', 1, cpos, &cChars);
|
|
SetConsoleCursorPosition(con_out, cpos);
|
|
#endif
|
|
#endif
|
|
#endif
|
|
#endif
|
|
}
|
|
#endif /* 0 */
|
|
|
|
/*
|
|
* Output a plain backspace, without erasing the previous char.
|
|
*/
|
|
public void
|
|
putbs()
|
|
{
|
|
#if !MSDOS_COMPILER
|
|
tputs(sc_backspace, 1, putchr);
|
|
#else
|
|
int row, col;
|
|
|
|
flush();
|
|
{
|
|
#if MSDOS_COMPILER==MSOFTC
|
|
struct rccoord tpos;
|
|
tpos = _gettextposition();
|
|
row = tpos.row;
|
|
col = tpos.col;
|
|
#else
|
|
#if MSDOS_COMPILER==BORLANDC || MSDOS_COMPILER==DJGPPC
|
|
row = wherey();
|
|
col = wherex();
|
|
#else
|
|
#if MSDOS_COMPILER==WIN32C
|
|
CONSOLE_SCREEN_BUFFER_INFO scr;
|
|
GetConsoleScreenBufferInfo(con_out, &scr);
|
|
row = scr.dwCursorPosition.Y - scr.srWindow.Top + 1;
|
|
col = scr.dwCursorPosition.X - scr.srWindow.Left + 1;
|
|
#endif
|
|
#endif
|
|
#endif
|
|
}
|
|
if (col <= 1)
|
|
return;
|
|
_settextposition(row, col-1);
|
|
#endif /* MSDOS_COMPILER */
|
|
}
|
|
|
|
#if MSDOS_COMPILER==WIN32C
|
|
/*
|
|
* Determine whether an input character is waiting to be read.
|
|
*/
|
|
static int
|
|
win32_kbhit(tty)
|
|
HANDLE tty;
|
|
{
|
|
INPUT_RECORD ip;
|
|
DWORD read;
|
|
|
|
if (keyCount > 0)
|
|
return (TRUE);
|
|
|
|
currentKey.ascii = 0;
|
|
currentKey.scan = 0;
|
|
|
|
/*
|
|
* Wait for a real key-down event, but
|
|
* ignore SHIFT and CONTROL key events.
|
|
*/
|
|
do
|
|
{
|
|
PeekConsoleInput(tty, &ip, 1, &read);
|
|
if (read == 0)
|
|
return (FALSE);
|
|
ReadConsoleInput(tty, &ip, 1, &read);
|
|
} while (ip.EventType != KEY_EVENT ||
|
|
ip.Event.KeyEvent.bKeyDown != TRUE ||
|
|
ip.Event.KeyEvent.wVirtualScanCode == 0 ||
|
|
ip.Event.KeyEvent.wVirtualKeyCode == VK_SHIFT ||
|
|
ip.Event.KeyEvent.wVirtualKeyCode == VK_CONTROL ||
|
|
ip.Event.KeyEvent.wVirtualKeyCode == VK_MENU);
|
|
|
|
currentKey.ascii = ip.Event.KeyEvent.uChar.AsciiChar;
|
|
currentKey.scan = ip.Event.KeyEvent.wVirtualScanCode;
|
|
keyCount = ip.Event.KeyEvent.wRepeatCount;
|
|
|
|
if (ip.Event.KeyEvent.dwControlKeyState &
|
|
(LEFT_ALT_PRESSED | RIGHT_ALT_PRESSED))
|
|
{
|
|
switch (currentKey.scan)
|
|
{
|
|
case PCK_ALT_E: /* letter 'E' */
|
|
currentKey.ascii = 0;
|
|
break;
|
|
}
|
|
} else if (ip.Event.KeyEvent.dwControlKeyState &
|
|
(LEFT_CTRL_PRESSED | RIGHT_CTRL_PRESSED))
|
|
{
|
|
switch (currentKey.scan)
|
|
{
|
|
case PCK_RIGHT: /* right arrow */
|
|
currentKey.scan = PCK_CTL_RIGHT;
|
|
break;
|
|
case PCK_LEFT: /* left arrow */
|
|
currentKey.scan = PCK_CTL_LEFT;
|
|
break;
|
|
case PCK_DELETE: /* delete */
|
|
currentKey.scan = PCK_CTL_DELETE;
|
|
break;
|
|
}
|
|
}
|
|
return (TRUE);
|
|
}
|
|
|
|
/*
|
|
* Read a character from the keyboard.
|
|
*/
|
|
public char
|
|
WIN32getch(tty)
|
|
int tty;
|
|
{
|
|
int ascii;
|
|
|
|
if (pending_scancode)
|
|
{
|
|
pending_scancode = 0;
|
|
return ((char)(currentKey.scan & 0x00FF));
|
|
}
|
|
|
|
while (win32_kbhit((HANDLE)tty) == FALSE)
|
|
{
|
|
Sleep(20);
|
|
if (ABORT_SIGS())
|
|
return ('\003');
|
|
continue;
|
|
}
|
|
keyCount --;
|
|
ascii = currentKey.ascii;
|
|
/*
|
|
* On PC's, the extended keys return a 2 byte sequence beginning
|
|
* with '00', so if the ascii code is 00, the next byte will be
|
|
* the lsb of the scan code.
|
|
*/
|
|
pending_scancode = (ascii == 0x00);
|
|
return ((char)ascii);
|
|
}
|
|
#endif
|