=================================================================== RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/less/screen.c,v retrieving revision 1.10 retrieving revision 1.11 diff -u -r1.10 -r1.11 --- src/usr.bin/less/screen.c 2003/04/06 23:38:07 1.10 +++ src/usr.bin/less/screen.c 2003/04/13 18:26:26 1.11 @@ -1,42 +1,43 @@ -/* $OpenBSD: screen.c,v 1.10 2003/04/06 23:38:07 deraadt Exp $ */ - /* - * Copyright (c) 1984,1985,1989,1994,1995 Mark Nudelman - * All rights reserved. + * Copyright (C) 1984-2002 Mark Nudelman * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice in the documentation and/or other materials provided with - * the distribution. + * You may distribute under the terms of either the GNU General Public + * License or the Less License, as specified in the README file. * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY - * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR - * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT - * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR - * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, - * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE - * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN - * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * For more information about less, or for information on how to + * contact the author, see the README file. */ /* * Routines which deal with the characteristics of the terminal. * Uses termcap to be as terminal-independent as possible. - * - * {{ Maybe someday this should be rewritten to use curses or terminfo. }} */ #include "less.h" #include "cmd.h" +#if MSDOS_COMPILER +#include "pckeys.h" +#if MSDOS_COMPILER==MSOFTC +#include +#else +#if MSDOS_COMPILER==BORLANDC || MSDOS_COMPILER==DJGPPC +#include +#if MSDOS_COMPILER==DJGPPC +#include +extern int fd0; +#endif +#else +#if MSDOS_COMPILER==WIN32C +#include +#endif +#endif +#endif +#include + +#else + #if HAVE_TERMIOS_H && HAVE_TERMIOS_FUNCS #include #if HAVE_SYS_IOCTL_H && !defined(TIOCGWINSZ) @@ -46,28 +47,27 @@ #if HAVE_TERMIO_H #include #else +#if HAVE_SGSTAT_H +#include +#else #include +#endif #if HAVE_SYS_IOCTL_H && (defined(TIOCGWINSZ) || defined(TCGETA) || defined(TIOCGETP) || defined(WIOCGETD)) #include #endif #endif #endif + #if HAVE_TERMCAP_H #include #endif - -#ifndef TIOCGWINSZ -/* - * For the Unix PC (ATT 7300 & 3B1): - * Since WIOCGETD is defined in sys/window.h, we can't use that to decide - * whether to include sys/window.h. Use SIGPHONE from sys/signal.h instead. - */ +#ifdef _OSK +#include +#endif +#if OS2 #include -#ifdef SIGPHONE -#include +#include "pckeys.h" #endif -#endif - #if HAVE_SYS_STREAM_H #include #endif @@ -75,12 +75,88 @@ #include #endif +#endif /* MSDOS_COMPILER */ + +/* + * Check for broken termios package that forces you to manually + * set the line discipline. + */ +#ifdef __ultrix__ +#define MUST_SET_LINE_DISCIPLINE 1 +#else +#define MUST_SET_LINE_DISCIPLINE 0 +#endif + #if OS2 #define DEFAULT_TERM "ansi" +static char *windowid; #else #define DEFAULT_TERM "unknown" #endif +#if MSDOS_COMPILER==MSOFTC +static int videopages; +static long msec_loops; +static int flash_created = 0; +#define SETCOLORS(fg,bg) { _settextcolor(fg); _setbkcolor(bg); } +#endif + +#if MSDOS_COMPILER==BORLANDC +static unsigned short *whitescreen; +static int flash_created = 0; +#endif +#if MSDOS_COMPILER==BORLANDC || MSDOS_COMPILER==DJGPPC +#define _settextposition(y,x) gotoxy(x,y) +#define _clearscreen(m) clrscr() +#define _outtext(s) cputs(s) +#define SETCOLORS(fg,bg) { textcolor(fg); textbackground(bg); } +extern int sc_height; +#endif + +#if MSDOS_COMPILER==WIN32C +struct keyRecord +{ + int ascii; + int scan; +} currentKey; + +static int keyCount = 0; +static WORD curr_attr; +static int pending_scancode = 0; +static WORD *whitescreen; + +static HANDLE con_out_save = INVALID_HANDLE_VALUE; /* previous console */ +static HANDLE con_out_ours = INVALID_HANDLE_VALUE; /* our own */ +HANDLE con_out = INVALID_HANDLE_VALUE; /* current console */ + +extern int quitting; +static void win32_init_term(); +static void win32_deinit_term(); + +#define FG_COLORS (FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE | FOREGROUND_INTENSITY) +#define BG_COLORS (BACKGROUND_RED | BACKGROUND_GREEN | BACKGROUND_BLUE | BACKGROUND_INTENSITY) +#define MAKEATTR(fg,bg) ((WORD)((fg)|((bg)<<4))) +#define SETCOLORS(fg,bg) { curr_attr = MAKEATTR(fg,bg); \ + if (SetConsoleTextAttribute(con_out, curr_attr) == 0) \ + error("SETCOLORS failed"); } +#endif + +#if MSDOS_COMPILER +public int nm_fg_color; /* Color of normal text */ +public int nm_bg_color; +public int bo_fg_color; /* Color of bold text */ +public int bo_bg_color; +public int ul_fg_color; /* Color of underlined text */ +public int ul_bg_color; +public int so_fg_color; /* Color of standout text */ +public int so_bg_color; +public int bl_fg_color; /* Color of blinking text */ +public int bl_bg_color; +static int sy_fg_color; /* Color of system text (before less) */ +static int sy_bg_color; + +#else + /* * Strings passed to tputs() to do various terminal functions. */ @@ -107,9 +183,9 @@ *sc_e_keypad, /* End keypad mode */ *sc_init, /* Startup terminal initialization */ *sc_deinit; /* Exit terminal de-initialization */ +#endif static int init_done = 0; -static int tty_fd = -1; public int auto_wrap; /* Terminal does \r\n when write past margin */ public int ignaw; /* Terminal ignores \n immediately after wrap */ @@ -122,8 +198,15 @@ public int bl_s_width, bl_e_width; /* Printing width of blink seq */ public int above_mem, below_mem; /* Memory retained above/below screen */ public int can_goto_line; /* Can move cursor to any line */ +public int clear_bg; /* Clear fills with background color */ +public int missing_cap = 0; /* Some capability is missing */ +static int attrmode = AT_NORMAL; + +#if !MSDOS_COMPILER static char *cheaper(); +static void tmodes(); +#endif /* * These two variables are sometimes defined in, @@ -133,14 +216,22 @@ extern short ospeed; /* Terminal output baud rate */ extern char PC; /* Pad character */ #endif +#ifdef _OSK +short ospeed; +char PC_, *UP, *BC; +#endif extern int quiet; /* If VERY_QUIET, use visual bell for bell */ -extern int know_dumb; /* Don't complain about a dumb terminal */ -extern int back_scroll; +extern int no_back_scroll; extern int swindow; extern int no_init; +extern int no_keypad; +extern int sigs; +extern int wscroll; +extern int screen_trashed; +extern int tty; extern int quit_at_eof; -extern int more_mode; +extern int ismore; #if HILITE_SEARCH extern int hilite_search; #endif @@ -168,32 +259,27 @@ if (on == curr_on) return; - - if (tty_fd == -1 && (tty_fd = open("/dev/tty", O_RDWR)) < 0) - tty_fd = 2; - -#if OS2 - signal(SIGINT, SIG_IGN); - erase_char = '\b'; - kill_char = '\033'; -#else #if HAVE_TERMIOS_H && HAVE_TERMIOS_FUNCS { struct termios s; static struct termios save_term; + static int saved_term = 0; if (on) { /* * Get terminal modes. */ - if (tcgetattr(tty_fd, &s) == -1) - return; + tcgetattr(tty, &s); /* * Save modes and set certain variables dependent on modes. */ - save_term = s; + if (!saved_term) + { + save_term = s; + saved_term = 1; + } #if HAVE_OSPEED switch (cfgetospeed(&s)) { @@ -259,7 +345,7 @@ #ifdef VWERASE werase_char = s.c_cc[VWERASE]; #else - werase_char = 0; + werase_char = CONTROL('W'); #endif /* @@ -284,14 +370,14 @@ ); s.c_oflag |= (0 -#ifdef XTABS - | XTABS +#ifdef OXTABS + | OXTABS #else #ifdef TAB3 | TAB3 #else -#ifdef OXTABS - | OXTABS +#ifdef XTABS + | XTABS #endif #endif #endif @@ -319,6 +405,19 @@ ); s.c_cc[VMIN] = 1; s.c_cc[VTIME] = 0; +#ifdef VLNEXT + s.c_cc[VLNEXT] = 0; +#endif +#ifdef VDSUSP + s.c_cc[VDSUSP] = 0; +#endif +#if MUST_SET_LINE_DISCIPLINE + /* + * System's termios is broken; need to explicitly + * request TERMIODISC line discipline. + */ + s.c_line = TERMIODISC; +#endif } else { /* @@ -326,26 +425,45 @@ */ s = save_term; } - if (tcsetattr(tty_fd, TCSANOW, &s) == -1) - return; +#if HAVE_FSYNC + fsync(tty); +#endif + tcsetattr(tty, TCSADRAIN, &s); +#if MUST_SET_LINE_DISCIPLINE + if (!on) + { + /* + * Broken termios *ignores* any line discipline + * except TERMIODISC. A different old line discipline + * is therefore not restored, yet. Restore the old + * line discipline by hand. + */ + ioctl(tty, TIOCSETD, &save_term.c_line); + } +#endif } #else #ifdef TCGETA { struct termio s; static struct termio save_term; + static int saved_term = 0; if (on) { /* * Get terminal modes. */ - ioctl(tty_fd, TCGETA, &s); + ioctl(tty, TCGETA, &s); /* * Save modes and set certain variables dependent on modes. */ - save_term = s; + if (!saved_term) + { + save_term = s; + saved_term = 1; + } #if HAVE_OSPEED ospeed = s.c_cflag & CBAUD; #endif @@ -354,7 +472,7 @@ #ifdef VWERASE werase_char = s.c_cc[VWERASE]; #else - werase_char = 0; + werase_char = CONTROL('W'); #endif /* @@ -372,30 +490,36 @@ */ s = save_term; } - ioctl(tty_fd, TCSETAW, &s); + ioctl(tty, TCSETAW, &s); } #else +#ifdef TIOCGETP { struct sgttyb s; static struct sgttyb save_term; + static int saved_term = 0; if (on) { /* * Get terminal modes. */ - ioctl(tty_fd, TIOCGETP, &s); + ioctl(tty, TIOCGETP, &s); /* * Save modes and set certain variables dependent on modes. */ - save_term = s; + if (!saved_term) + { + save_term = s; + saved_term = 1; + } #if HAVE_OSPEED ospeed = s.sg_ospeed; #endif erase_char = s.sg_erase; kill_char = s.sg_kill; - werase_char = 0; + werase_char = CONTROL('W'); /* * Set the modes to the way we want them. @@ -409,290 +533,586 @@ */ s = save_term; } - ioctl(tty_fd, TIOCSETN, &s); + ioctl(tty, TIOCSETN, &s); } +#else +#ifdef _OSK + { + struct sgbuf s; + static struct sgbuf save_term; + static int saved_term = 0; + + if (on) + { + /* + * Get terminal modes. + */ + _gs_opt(tty, &s); + + /* + * Save modes and set certain variables dependent on modes. + */ + if (!saved_term) + { + 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; } - static void -cannot(s) - char *s; +#if !MSDOS_COMPILER +/* + * Some glue to prevent calling termcap functions if tgetent() failed. + */ +static int hardcopy; + + static char * +ltget_env(capname) + char *capname; { - PARG parg; + char name[16]; - if (know_dumb || more_mode) - /* - * User knows this is a dumb terminal, so don't tell him. - * more doesn't complain about these, either. - */ - return; - - parg.p_string = s; - error("WARNING: terminal cannot %s", &parg); + strlcpy(name, "LESS_TERMCAP_", sizeof(name)); + strlcat(name, capname, sizeof(name)); + return (lgetenv(name)); } -/* - * Get size of the output screen. - */ -#if OS2 - public void -scrsize() + static int +ltgetflag(capname) + char *capname; { - int s[2]; + char *s; - _scrsize(s); - sc_width = s[0]; - sc_height = s[1]; + if ((s = ltget_env(capname)) != NULL) + return (*s != '\0' && *s != '0'); + if (hardcopy) + return (0); + return (tgetflag(capname)); } -#else - - public void -scrsize() + static int +ltgetnum(capname) + char *capname; { char *s; -#ifdef TIOCGWINSZ - struct winsize w; -#else -#ifdef WIOCGETD - struct uwdata w; -#endif -#endif - if (tty_fd == -1 && (tty_fd = open("/dev/tty", O_RDWR)) < 0) - tty_fd = 2; + if ((s = ltget_env(capname)) != NULL) + return (atoi(s)); + if (hardcopy) + return (-1); + return (tgetnum(capname)); +} -#ifdef TIOCGWINSZ - if (ioctl(tty_fd, TIOCGWINSZ, &w) == 0 && w.ws_row > 0) - sc_height = w.ws_row; - else -#else -#ifdef WIOCGETD - if (ioctl(tty_fd, WIOCGETD, &w) == 0 && w.uw_height > 0) - sc_height = w.uw_height/w.uw_vs; - else -#endif -#endif - if ((s = getenv("LINES")) != NULL) - sc_height = atoi(s); - else - sc_height = tgetnum("li"); + static char * +ltgetstr(capname, pp) + char *capname; + char **pp; +{ + char *s; - if (sc_height <= 0) - sc_height = 24; - -#ifdef TIOCGWINSZ - if (ioctl(tty_fd, TIOCGWINSZ, &w) == 0 && w.ws_col > 0) - sc_width = w.ws_col; - else -#ifdef WIOCGETD - if (ioctl(tty_fd, WIOCGETD, &w) == 0 && w.uw_width > 0) - sc_width = w.uw_width/w.uw_hs; - else -#endif -#endif - if ((s = getenv("COLUMNS")) != NULL) - sc_width = atoi(s); - else - sc_width = tgetnum("co"); - - if (sc_width <= 0) - sc_width = 80; + if ((s = ltget_env(capname)) != NULL) + return (s); + if (hardcopy) + return (NULL); + return (tgetstr(capname, pp)); } -#endif /* OS2 */ +#endif /* MSDOS_COMPILER */ /* - * Take care of the "variable" keys. - * Certain keys send escape sequences which differ on different terminals - * (such as the arrow keys, INSERT, DELETE, etc.) - * Construct the commands based on these keys. + * Get size of the output screen. */ public void -get_editkeys() +scrsize() { - char *sp; - char *s; - char tbuf[40]; + register char *s; + int sys_height; + int sys_width; +#if !MSDOS_COMPILER + int n; +#endif - static char kfcmdtable[400]; - int sz_kfcmdtable = 0; - static char kecmdtable[400]; - int sz_kecmdtable = 0; +#define DEF_SC_WIDTH 80 +#if MSDOS_COMPILER +#define DEF_SC_HEIGHT 25 +#else +#define DEF_SC_HEIGHT 24 +#endif -#define put_cmd(str,action,tbl,sz) { \ - strcpy(tbl+sz, str); \ - sz += strlen(str) + 1; \ - tbl[sz++] = action; } -#define put_esc_cmd(str,action,tbl,sz) { \ - tbl[sz++] = ESC; \ - put_cmd(str,action,tbl,sz); } -#define put_fcmd(str,action) put_cmd(str,action,kfcmdtable,sz_kfcmdtable) -#define put_ecmd(str,action) put_cmd(str,action,kecmdtable,sz_kecmdtable) -#define put_esc_fcmd(str,action) put_esc_cmd(str,action,kfcmdtable,sz_kfcmdtable) -#define put_esc_ecmd(str,action) put_esc_cmd(str,action,kecmdtable,sz_kecmdtable) + sys_width = sys_height = 0; - /* - * Look at some interesting keys and see what strings they send. - * Create commands (both command keys and line-edit keys). - */ - - /* RIGHT ARROW */ - sp = tbuf; - if ((s = tgetstr("kr", &sp)) != NULL) +#if MSDOS_COMPILER==MSOFTC { - put_ecmd(s, EC_RIGHT); - put_esc_ecmd(s, EC_W_RIGHT); + struct videoconfig w; + _getvideoconfig(&w); + sys_height = w.numtextrows; + sys_width = w.numtextcols; } - - /* LEFT ARROW */ - sp = tbuf; - if ((s = tgetstr("kl", &sp)) != NULL) +#else +#if MSDOS_COMPILER==BORLANDC || MSDOS_COMPILER==DJGPPC { - put_ecmd(s, EC_LEFT); - put_esc_ecmd(s, EC_W_LEFT); + struct text_info w; + gettextinfo(&w); + sys_height = w.screenheight; + sys_width = w.screenwidth; } - - /* UP ARROW */ - sp = tbuf; - if ((s = tgetstr("ku", &sp)) != NULL) +#else +#if MSDOS_COMPILER==WIN32C { - put_ecmd(s, EC_UP); - put_fcmd(s, A_B_LINE); + 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; } - - /* DOWN ARROW */ - sp = tbuf; - if ((s = tgetstr("kd", &sp)) != NULL) +#else +#if OS2 { - put_ecmd(s, EC_DOWN); - put_fcmd(s, A_F_LINE); + 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); + } + } } - - /* PAGE UP */ - sp = tbuf; - if ((s = tgetstr("kP", &sp)) != NULL) +#else +#ifdef TIOCGWINSZ { - put_fcmd(s, A_B_SCREEN); + 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; + } } - - /* PAGE DOWN */ - sp = tbuf; - if ((s = tgetstr("kN", &sp)) != NULL) +#else +#ifdef WIOCGETD { - put_fcmd(s, A_F_SCREEN); + 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; + } } - - /* HOME */ - sp = tbuf; - if ((s = tgetstr("kh", &sp)) != NULL) - { - put_ecmd(s, EC_HOME); - } +#endif +#endif +#endif +#endif +#endif +#endif - /* END */ - sp = tbuf; - if ((s = tgetstr("@7", &sp)) != NULL) - { - put_ecmd(s, EC_END); - } + 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; - /* DELETE */ - sp = tbuf; - if ((s = tgetstr("kD", &sp)) == NULL) - { - /* Use DEL (\177) if no "kD" termcap. */ - tbuf[1] = '\177'; - tbuf[2] = '\0'; - s = tbuf+1; - } - put_ecmd(s, EC_DELETE); - put_esc_ecmd(s, EC_W_DELETE); - - /* BACKSPACE */ - tbuf[0] = ESC; - tbuf[1] = erase_char; - tbuf[2] = '\0'; - put_ecmd(tbuf, EC_W_BACKSPACE); + 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 (werase_char != 0) - { - tbuf[0] = werase_char; - tbuf[1] = '\0'; - put_ecmd(tbuf, EC_W_BACKSPACE); - } - +#if MSDOS_COMPILER==MSOFTC +/* + * Figure out how many empty loops it takes to delay a millisecond. + */ + static void +get_clock() +{ + clock_t start; + /* - * Register the two tables. + * Get synchronized at the start of a tick. */ - add_fcmd_table(kfcmdtable, sz_kfcmdtable); - add_ecmd_table(kecmdtable, sz_kecmdtable); + 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; } -#if DEBUG +/* + * Delay for a specified number of milliseconds. + */ static void -get_debug_term() +dummy_func() { - auto_wrap = 1; - ignaw = 1; - so_s_width = so_e_width = 0; - bo_s_width = bo_e_width = 0; - ul_s_width = ul_e_width = 0; - bl_s_width = bl_e_width = 0; - sc_s_keypad = "(InitKey)"; - sc_e_keypad = "(DeinitKey)"; - sc_init = "(InitTerm)"; - sc_deinit = "(DeinitTerm)"; - sc_eol_clear = "(ClearEOL)"; - sc_eos_clear = "(ClearEOS)"; - sc_clear = "(ClearScreen)"; - sc_move = "(Move<%d,%d>)"; - sc_s_in = "(SO+)"; - sc_s_out = "(SO-)"; - sc_u_in = "(UL+)"; - sc_u_out = "(UL-)"; - sc_b_in = "(BO+)"; - sc_b_out = "(BO-)"; - sc_bl_in = "(BL+)"; - sc_bl_out = "(BL-)"; - sc_visual_bell ="(VBell)"; - sc_backspace = "(BS)"; - sc_home = "(Home)"; - sc_lower_left = "(LL)"; - sc_addline = "(AddLine)"; + 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; - char *t1, *t2; - int hard; + register char *t1, *t2; char *term; - char termbuf[2048]; + char termbuf[TERMBUF_SIZE]; - static char sbuf[1024]; + static char sbuf[TERMSBUF_SIZE]; -#ifdef OS2 +#if OS2 /* * Make sure the termcap database is available. */ - sp = getenv("TERMCAP"); + sp = lgetenv("TERMCAP"); if (sp == NULL || *sp == '\0') { char *termcap; if ((sp = homefile("termcap.dat")) != NULL) { - size_t l = strlen(sp)+9; - termcap = (char *) ecalloc(l, sizeof(char)); - snprintf(termcap, l, "TERMCAP=%s", sp); + size_t len = strlen(sp) + 9; + termcap = (char *) ecalloc(len, sizeof(char)); + snprintf(termcap, len, "TERMCAP=%s", sp); free(sp); putenv(termcap); } @@ -701,39 +1121,33 @@ /* * Find out what kind of terminal this is. */ - if ((term = getenv("TERM")) == NULL) + if ((term = lgetenv("TERM")) == NULL) term = DEFAULT_TERM; + hardcopy = 0; if (tgetent(termbuf, term) <= 0) - strlcpy(termbuf, "dumb:hc:", sizeof termbuf); + hardcopy = 1; + if (ltgetflag("hc")) + hardcopy = 1; - hard = tgetflag("hc"); - /* * Get size of the screen. */ scrsize(); pos_init(); -#if DEBUG - if (strncmp(term,"LESSDEBUG",9) == 0) - { - get_debug_term(); - return; - } -#endif /* DEBUG */ + auto_wrap = ltgetflag("am"); + ignaw = ltgetflag("xn"); + above_mem = ltgetflag("da"); + below_mem = ltgetflag("db"); + clear_bg = ltgetflag("ut"); - auto_wrap = tgetflag("am"); - ignaw = tgetflag("xn"); - above_mem = tgetflag("da"); - below_mem = tgetflag("db"); - /* * 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 = tgetnum("sg")) < 0) + if ((so_s_width = ltgetnum("sg")) < 0) so_s_width = 0; so_e_width = so_s_width; @@ -759,15 +1173,15 @@ sp = sbuf; #if HAVE_OSPEED - sc_pad = tgetstr("pc", &sp); + sc_pad = ltgetstr("pc", &sp); if (sc_pad != NULL) PC = *sc_pad; #endif - sc_s_keypad = tgetstr("ks", &sp); + sc_s_keypad = ltgetstr("ks", &sp); if (sc_s_keypad == NULL) sc_s_keypad = ""; - sc_e_keypad = tgetstr("ke", &sp); + sc_e_keypad = ltgetstr("ke", &sp); if (sc_e_keypad == NULL) sc_e_keypad = ""; @@ -776,39 +1190,39 @@ * that switch to/from an alternate screen, and we're in quit_at_eof * (eg, more(1)). */ - if (!quit_at_eof && !more_mode) { - sc_init = tgetstr("ti", &sp); - sc_deinit = tgetstr("te", &sp); + if (!quit_at_eof && !ismore) { + sc_init = ltgetstr("ti", &sp); + sc_deinit= ltgetstr("te", &sp); } if (sc_init == NULL) sc_init = ""; + if (sc_deinit == NULL) sc_deinit = ""; - sc_eol_clear = tgetstr("ce", &sp); - if (hard || sc_eol_clear == NULL || *sc_eol_clear == '\0') + sc_eol_clear = ltgetstr("ce", &sp); + if (sc_eol_clear == NULL || *sc_eol_clear == '\0') { - cannot("clear to end of line"); + missing_cap = 1; sc_eol_clear = ""; } - sc_eos_clear = tgetstr("cd", &sp); - if (below_mem && - (hard || sc_eos_clear == NULL || *sc_eos_clear == '\0')) + sc_eos_clear = ltgetstr("cd", &sp); + if (below_mem && (sc_eos_clear == NULL || *sc_eos_clear == '\0')) { - cannot("clear to end of screen"); + missing_cap = 1; sc_eol_clear = ""; } - sc_clear = tgetstr("cl", &sp); - if (hard || sc_clear == NULL || *sc_clear == '\0') + sc_clear = ltgetstr("cl", &sp); + if (sc_clear == NULL || *sc_clear == '\0') { - cannot("clear screen"); + missing_cap = 1; sc_clear = "\n\n"; } - sc_move = tgetstr("cm", &sp); - if (hard || sc_move == NULL || *sc_move == '\0') + sc_move = ltgetstr("cm", &sp); + if (sc_move == NULL || *sc_move == '\0') { /* * This is not an error here, because we don't @@ -820,55 +1234,20 @@ } else can_goto_line = 1; - sc_s_in = tgetstr("so", &sp); - if (hard || sc_s_in == NULL) - sc_s_in = ""; + 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_s_out = tgetstr("se", &sp); - if (hard || sc_s_out == NULL) - sc_s_out = ""; - - sc_u_in = tgetstr("us", &sp); - if (hard || sc_u_in == NULL) - sc_u_in = sc_s_in; - - sc_u_out = tgetstr("ue", &sp); - if (hard || sc_u_out == NULL) - sc_u_out = sc_s_out; - - sc_b_in = tgetstr("md", &sp); - if (hard || sc_b_in == NULL) - { - sc_b_in = sc_s_in; - sc_b_out = sc_s_out; - } else - { - sc_b_out = tgetstr("me", &sp); - if (hard || sc_b_out == NULL) - sc_b_out = ""; - } - - sc_bl_in = tgetstr("mb", &sp); - if (hard || sc_bl_in == NULL) - { - sc_bl_in = sc_s_in; - sc_bl_out = sc_s_out; - } else - { - sc_bl_out = tgetstr("me", &sp); - if (hard || sc_bl_out == NULL) - sc_bl_out = ""; - } - - sc_visual_bell = tgetstr("vb", &sp); - if (hard || sc_visual_bell == NULL) + sc_visual_bell = ltgetstr("vb", &sp); + if (sc_visual_bell == NULL) sc_visual_bell = ""; - if (tgetflag("bs")) + if (ltgetflag("bs")) sc_backspace = "\b"; else { - sc_backspace = tgetstr("bc", &sp); + sc_backspace = ltgetstr("bc", &sp); if (sc_backspace == NULL || *sc_backspace == '\0') sc_backspace = "\b"; } @@ -877,46 +1256,46 @@ * Choose between using "ho" and "cm" ("home" and "cursor move") * to move the cursor to the upper left corner of the screen. */ - t1 = tgetstr("ho", &sp); - if (hard || t1 == NULL) + t1 = ltgetstr("ho", &sp); + if (t1 == NULL) t1 = ""; if (*sc_move == '\0') t2 = ""; else { - strlcpy(sp, tgoto(sc_move, 0, 0), sbuf + sizeof sbuf - sp); + strlcpy(sp, tgoto(sc_move, 0, 0), sbuf + sizeof(sbuf) - sp); t2 = sp; sp += strlen(sp) + 1; } - sc_home = cheaper(t1, t2, "home cursor", "|\b^"); + 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 = tgetstr("ll", &sp); - if (hard || t1 == NULL) + t1 = ltgetstr("ll", &sp); + if (t1 == NULL) t1 = ""; if (*sc_move == '\0') t2 = ""; else { - strlcpy(sp, tgoto(sc_move, 0, sc_height-1), sbuf + sizeof sbuf - sp); + strlcpy(sp, tgoto(sc_move, 0, sc_height-1), + sbuf + sizeof(sbuf) - sp); t2 = sp; sp += strlen(sp) + 1; } - sc_lower_left = cheaper(t1, t2, - "move cursor to lower left of screen", "\r"); + sc_lower_left = cheaper(t1, t2, "\r"); /* * Choose between using "al" or "sr" ("add line" or "scroll reverse") * to add a line at the top of the screen. */ - t1 = tgetstr("al", &sp); - if (hard || t1 == NULL) + t1 = ltgetstr("al", &sp); + if (t1 == NULL) t1 = ""; - t2 = tgetstr("sr", &sp); - if (hard || t2 == NULL) + t2 = ltgetstr("sr", &sp); + if (t2 == NULL) t2 = ""; #if OS2 if (*t1 == '\0' && *t2 == '\0') @@ -926,16 +1305,18 @@ if (above_mem) sc_addline = t1; else - sc_addline = cheaper(t1, t2, "scroll backwards", ""); + sc_addline = cheaper(t1, t2, ""); if (*sc_addline == '\0') { /* * Force repaint on any backward movement. */ - back_scroll = 0; + 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 @@ -969,14 +1350,13 @@ * cost (see cost() function). */ static char * -cheaper(t1, t2, doit, def) +cheaper(t1, t2, def) char *t1, *t2; - char *doit; char *def; { if (*t1 == '\0' && *t2 == '\0') { - cannot(doit); + missing_cap = 1; return (def); } if (*t1 == '\0') @@ -988,23 +1368,162 @@ 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 (no_init) - return; - tputs(sc_init, sc_height, putchr); - tputs(sc_s_keypad, sc_height, putchr); +#if !MSDOS_COMPILER + if (!no_init) + tputs(sc_init, sc_height, putchr); + if (!no_keypad) + tputs(sc_s_keypad, sc_height, putchr); +#else +#if MSDOS_COMPILER==WIN32C + if (!no_init) + win32_init_term(); +#endif + initcolor(); + flush(); +#endif init_done = 1; } @@ -1014,12 +1533,24 @@ public void deinit() { - if (no_init) - return; if (!init_done) return; - tputs(sc_e_keypad, sc_height, putchr); - tputs(sc_deinit, sc_height, putchr); +#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; } @@ -1029,7 +1560,12 @@ public void home() { +#if !MSDOS_COMPILER tputs(sc_home, 1, putchr); +#else + flush(); + _settextposition(1,1); +#endif } /* @@ -1039,42 +1575,331 @@ 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 } /* + * 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; { - char *sc_goto; - - sc_goto = tgoto(sc_move, 0, slinenum); - tputs(sc_goto, 1, putchr); +#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 /* - * Ring the terminal bell. + * 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. }} */ - public void -bell() + static void +create_flash() { - if (quiet == VERY_QUIET) - vbell(); - else - putchr('\7'); +#if MSDOS_COMPILER==MSOFTC + struct videoconfig w; + char *blanks; + int row, col; + + _getvideoconfig(&w); + videopages = w.numvideopages; + if (videopages < 2) + { + so_enter(); + so_exit(); + } else + { + _setactivepage(1); + so_enter(); + 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); + so_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. @@ -1082,18 +1907,109 @@ 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 } /* @@ -1103,21 +2019,114 @@ 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. + */ lower_left(); - if (below_mem) - tputs(sc_eos_clear, 1, putchr); - else - tputs(sc_eol_clear, 1, putchr); + switch (attrmode) + { + case AT_STANDOUT: + so_exit(); + clear_eol_bot(); + so_enter(); + break; + case AT_UNDERLINE: + ul_exit(); + clear_eol_bot(); + ul_enter(); + break; + case AT_BOLD: + bo_exit(); + clear_eol_bot(); + bo_enter(); + break; + case AT_BLINK: + bl_exit(); + clear_eol_bot(); + bl_enter(); + break; + default: + clear_eol_bot(); + break; + } } /* @@ -1126,7 +2135,13 @@ public void so_enter() { +#if !MSDOS_COMPILER tputs(sc_s_in, 1, putchr); +#else + flush(); + SETCOLORS(so_fg_color, so_bg_color); +#endif + attrmode = AT_STANDOUT; } /* @@ -1135,7 +2150,13 @@ public void so_exit() { +#if !MSDOS_COMPILER tputs(sc_s_out, 1, putchr); +#else + flush(); + SETCOLORS(nm_fg_color, nm_bg_color); +#endif + attrmode = AT_NORMAL; } /* @@ -1145,7 +2166,13 @@ public void ul_enter() { +#if !MSDOS_COMPILER tputs(sc_u_in, 1, putchr); +#else + flush(); + SETCOLORS(ul_fg_color, ul_bg_color); +#endif + attrmode = AT_UNDERLINE; } /* @@ -1154,7 +2181,13 @@ public void ul_exit() { +#if !MSDOS_COMPILER tputs(sc_u_out, 1, putchr); +#else + flush(); + SETCOLORS(nm_fg_color, nm_bg_color); +#endif + attrmode = AT_NORMAL; } /* @@ -1163,7 +2196,13 @@ public void bo_enter() { +#if !MSDOS_COMPILER tputs(sc_b_in, 1, putchr); +#else + flush(); + SETCOLORS(bo_fg_color, bo_bg_color); +#endif + attrmode = AT_BOLD; } /* @@ -1172,7 +2211,13 @@ public void bo_exit() { +#if !MSDOS_COMPILER tputs(sc_b_out, 1, putchr); +#else + flush(); + SETCOLORS(nm_fg_color, nm_bg_color); +#endif + attrmode = AT_NORMAL; } /* @@ -1181,7 +2226,13 @@ public void bl_enter() { +#if !MSDOS_COMPILER tputs(sc_bl_in, 1, putchr); +#else + flush(); + SETCOLORS(bl_fg_color, bl_bg_color); +#endif + attrmode = AT_BLINK; } /* @@ -1190,9 +2241,16 @@ public void bl_exit() { +#if !MSDOS_COMPILER tputs(sc_bl_out, 1, putchr); +#else + flush(); + SETCOLORS(nm_fg_color, nm_bg_color); +#endif + attrmode = AT_NORMAL; } +#if 0 /* No longer used */ /* * Erase the character to the left of the cursor * and move the cursor left. @@ -1200,13 +2258,48 @@ public void backspace() { +#if !MSDOS_COMPILER /* - * Try to erase the previous character by overstriking with a space. + * 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. @@ -1214,5 +2307,134 @@ 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