/* terminal control module for terminals described by TERMCAP Copyright (C) 1985, 86, 87, 93, 94, 95 Free Software Foundation, Inc. This file is part of GNU Emacs. GNU Emacs is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. GNU Emacs is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with GNU Emacs; see the file COPYING. If not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include #include #include #include "termchar.h" #include "termopts.h" #undef NULL #include "lisp.h" #include "charset.h" #include "coding.h" #include "frame.h" #include "disptab.h" #include "termhooks.h" #include "keyboard.h" #include "dispextern.h" #include "cm.h" #ifdef HAVE_X_WINDOWS #include "xterm.h" #endif #define max(a, b) ((a) > (b) ? (a) : (b)) #define min(a, b) ((a) < (b) ? (a) : (b)) #define OUTPUT(a) tputs (a, (int) (FRAME_HEIGHT (selected_frame) - curY), cmputc) #define OUTPUT1(a) tputs (a, 1, cmputc) #define OUTPUTL(a, lines) tputs (a, lines, cmputc) #define OUTPUT_IF(a) { if (a) tputs (a, (int) (FRAME_HEIGHT (selected_frame) - curY), cmputc); } #define OUTPUT1_IF(a) { if (a) tputs (a, 1, cmputc); } /* Function to use to ring the bell. */ Lisp_Object Vring_bell_function; /* Terminal characteristics that higher levels want to look at. These are all extern'd in termchar.h */ int must_write_spaces; /* Nonzero means spaces in the text must actually be output; can't just skip over some columns to leave them blank. */ int min_padding_speed; /* Speed below which no padding necessary */ int line_ins_del_ok; /* Terminal can insert and delete lines */ int char_ins_del_ok; /* Terminal can insert and delete chars */ int scroll_region_ok; /* Terminal supports setting the scroll window */ int scroll_region_cost; /* Cost of setting a scroll window, measured in characters */ int memory_below_frame; /* Terminal remembers lines scrolled off bottom */ int fast_clear_end_of_line; /* Terminal has a `ce' string */ /* Nonzero means no need to redraw the entire frame on resuming a suspended Emacs. This is useful on terminals with multiple pages, where one page is used for Emacs and another for all else. */ int no_redraw_on_reenter; /* Hook functions that you can set to snap out the functions in this file. These are all extern'd in termhooks.h */ void (*cursor_to_hook) P_ ((int, int)); void (*raw_cursor_to_hook) P_ ((int, int)); void (*clear_to_end_hook) P_ ((void)); void (*clear_frame_hook) P_ ((void)); void (*clear_end_of_line_hook) P_ ((int)); void (*ins_del_lines_hook) P_ ((int, int)); void (*change_line_highlight_hook) P_ ((int, int, int)); void (*reassert_line_highlight_hook) P_ ((int, int)); void (*insert_glyphs_hook) P_ ((GLYPH *, int)); void (*write_glyphs_hook) P_ ((GLYPH *, int)); void (*delete_glyphs_hook) P_ ((int)); void (*ring_bell_hook) P_ ((void)); void (*reset_terminal_modes_hook) P_ ((void)); void (*set_terminal_modes_hook) P_ ((void)); void (*update_begin_hook) P_ ((struct frame *)); void (*update_end_hook) P_ ((struct frame *)); void (*set_terminal_window_hook) P_ ((int)); int (*read_socket_hook) P_ ((int, struct input_event *, int, int)); void (*frame_up_to_date_hook) P_ ((struct frame *)); /* Return the current position of the mouse. Set *f to the frame the mouse is in, or zero if the mouse is in no Emacs frame. If it is set to zero, all the other arguments are garbage. If the motion started in a scroll bar, set *bar_window to the scroll bar's window, *part to the part the mouse is currently over, *x to the position of the mouse along the scroll bar, and *y to the overall length of the scroll bar. Otherwise, set *bar_window to Qnil, and *x and *y to the column and row of the character cell the mouse is over. Set *time to the time the mouse was at the returned position. This should clear mouse_moved until the next motion event arrives. */ void (*mouse_position_hook) P_ ((FRAME_PTR *f, int insist, Lisp_Object *bar_window, enum scroll_bar_part *part, Lisp_Object *x, Lisp_Object *y, unsigned long *time)); /* When reading from a minibuffer in a different frame, Emacs wants to shift the highlight from the selected frame to the minibuffer's frame; under X, this means it lies about where the focus is. This hook tells the window system code to re-decide where to put the highlight. */ void (*frame_rehighlight_hook) P_ ((FRAME_PTR f)); /* If we're displaying frames using a window system that can stack frames on top of each other, this hook allows you to bring a frame to the front, or bury it behind all the other windows. If this hook is zero, that means the device we're displaying on doesn't support overlapping frames, so there's no need to raise or lower anything. If RAISE is non-zero, F is brought to the front, before all other windows. If RAISE is zero, F is sent to the back, behind all other windows. */ void (*frame_raise_lower_hook) P_ ((FRAME_PTR f, int raise)); /* Set the vertical scroll bar for WINDOW to have its upper left corner at (TOP, LEFT), and be LENGTH rows high. Set its handle to indicate that we are displaying PORTION characters out of a total of WHOLE characters, starting at POSITION. If WINDOW doesn't yet have a scroll bar, create one for it. */ void (*set_vertical_scroll_bar_hook) P_ ((struct window *window, int portion, int whole, int position)); /* The following three hooks are used when we're doing a thorough redisplay of the frame. We don't explicitly know which scroll bars are going to be deleted, because keeping track of when windows go away is a real pain - can you say set-window-configuration? Instead, we just assert at the beginning of redisplay that *all* scroll bars are to be removed, and then save scroll bars from the fiery pit when we actually redisplay their window. */ /* Arrange for all scroll bars on FRAME to be removed at the next call to `*judge_scroll_bars_hook'. A scroll bar may be spared if `*redeem_scroll_bar_hook' is applied to its window before the judgement. This should be applied to each frame each time its window tree is redisplayed, even if it is not displaying scroll bars at the moment; if the HAS_SCROLL_BARS flag has just been turned off, only calling this and the judge_scroll_bars_hook will get rid of them. If non-zero, this hook should be safe to apply to any frame, whether or not it can support scroll bars, and whether or not it is currently displaying them. */ void (*condemn_scroll_bars_hook) P_ ((FRAME_PTR frame)); /* Unmark WINDOW's scroll bar for deletion in this judgement cycle. Note that it's okay to redeem a scroll bar that is not condemned. */ void (*redeem_scroll_bar_hook) P_ ((struct window *window)); /* Remove all scroll bars on FRAME that haven't been saved since the last call to `*condemn_scroll_bars_hook'. This should be applied to each frame after each time its window tree is redisplayed, even if it is not displaying scroll bars at the moment; if the HAS_SCROLL_BARS flag has just been turned off, only calling this and condemn_scroll_bars_hook will get rid of them. If non-zero, this hook should be safe to apply to any frame, whether or not it can support scroll bars, and whether or not it is currently displaying them. */ void (*judge_scroll_bars_hook) P_ ((FRAME_PTR FRAME)); /* Strings, numbers and flags taken from the termcap entry. */ char *TS_end_italic_mode; /* termcap "ae" */ char *TS_ins_line; /* "al" */ char *TS_italic_mode; /* "as" */ char *TS_ins_multi_lines; /* "AL" (one parameter, # lines to insert) */ char *TS_bell; /* "bl" */ char *TS_clr_to_bottom; /* "cd" */ char *TS_clr_line; /* "ce", clear to end of line */ char *TS_clr_frame; /* "cl" */ char *TS_set_scroll_region; /* "cs" (2 params, first line and last line) */ char *TS_set_scroll_region_1; /* "cS" (4 params: total lines, lines above scroll region, lines below it, total lines again) */ char *TS_del_char; /* "dc" */ char *TS_del_multi_chars; /* "DC" (one parameter, # chars to delete) */ char *TS_del_line; /* "dl" */ char *TS_del_multi_lines; /* "DL" (one parameter, # lines to delete) */ char *TS_delete_mode; /* "dm", enter character-delete mode */ char *TS_end_delete_mode; /* "ed", leave character-delete mode */ char *TS_end_insert_mode; /* "ei", leave character-insert mode */ char *TS_ins_char; /* "ic" */ char *TS_ins_multi_chars; /* "IC" (one parameter, # chars to insert) */ char *TS_insert_mode; /* "im", enter character-insert mode */ char *TS_pad_inserted_char; /* "ip". Just padding, no commands. */ char *TS_end_keypad_mode; /* "ke" */ char *TS_keypad_mode; /* "ks" */ char *TS_bold_mode; /* "md" */ char *TS_end_bold_mode; /* "me" */ char *TS_pad_char; /* "pc", char to use as padding */ char *TS_repeat; /* "rp" (2 params, # times to repeat and character to be repeated) */ char *TS_end_standout_mode; /* "se" */ char *TS_fwd_scroll; /* "sf" */ char *TS_standout_mode; /* "so" */ char *TS_rev_scroll; /* "sr" */ char *TS_end_termcap_modes; /* "te" */ char *TS_termcap_modes; /* "ti" */ char *TS_end_underscore_mode; /* "ue" */ char *TS_underscore_mode; /* "us" */ char *TS_visible_bell; /* "vb" */ char *TS_end_visual_mode; /* "ve" */ char *TS_visual_mode; /* "vi" */ char *TS_set_window; /* "wi" (4 params, start and end of window, each as vpos and hpos) */ int TF_hazeltine; /* termcap hz flag. */ int TF_insmode_motion; /* termcap mi flag: can move while in insert mode. */ int TF_standout_motion; /* termcap mi flag: can move while in standout mode. */ int TF_underscore; /* termcap ul flag: _ underlines if overstruck on nonblank position. Must clear before writing _. */ int TF_teleray; /* termcap xt flag: many weird consequences. For t1061. */ int TF_xs; /* Nonzero for "xs". If set together with TN_standout_width == 0, it means don't bother to write any end-standout cookies. */ int TN_standout_width; /* termcap sg number: width occupied by standout markers */ static int RPov; /* # chars to start a TS_repeat */ static int delete_in_insert_mode; /* delete mode == insert mode */ static int se_is_so; /* 1 if same string both enters and leaves standout mode */ /* internal state */ /* The largest frame width in any call to calculate_costs. */ int max_frame_width; /* The largest frame height in any call to calculate_costs. */ int max_frame_height; /* Number of chars of space used for standout marker at beginning of line, or'd with 0100. Zero if no standout marker at all. The length of these vectors is max_frame_height. Used IFF TN_standout_width >= 0. */ static char *chars_wasted; static char *copybuf; /* nonzero means supposed to write text in standout mode. */ int standout_requested; int insert_mode; /* Nonzero when in insert mode. */ int standout_mode; /* Nonzero when in standout mode. */ /* Size of window specified by higher levels. This is the number of lines, from the top of frame downwards, which can participate in insert-line/delete-line operations. Effectively it excludes the bottom frame_height - specified_window_size lines from those operations. */ int specified_window; /* Frame currently being redisplayed; 0 if not currently redisplaying. (Direct output does not count). */ FRAME_PTR updating_frame; /* Provided for lisp packages. */ static int system_uses_terminfo; char *tparam (); extern char *tgetstr (); #ifdef WINDOWSNT /* We aren't X windows, but we aren't termcap either. This makes me uncertain as to what value to use for frame.output_method. For this file, we'll define FRAME_TERMCAP_P to be zero so that our output hooks get called instead of the termcap functions. Probably the best long-term solution is to define an output_windows_nt... */ #undef FRAME_TERMCAP_P #define FRAME_TERMCAP_P(_f_) 0 #endif /* WINDOWSNT */ void ring_bell () { if (! NILP (Vring_bell_function)) { Lisp_Object function; /* Temporarily set the global variable to nil so that if we get an error, it stays nil and we don't call it over and over. We don't specbind it, because that would carefully restore the bad value if there's an error and make the loop of errors happen anyway. */ function = Vring_bell_function; Vring_bell_function = Qnil; call0 (function); Vring_bell_function = function; return; } if (! FRAME_TERMCAP_P (selected_frame)) { (*ring_bell_hook) (); return; } OUTPUT (TS_visible_bell && visible_bell ? TS_visible_bell : TS_bell); } void set_terminal_modes () { if (! FRAME_TERMCAP_P (selected_frame)) { (*set_terminal_modes_hook) (); return; } OUTPUT_IF (TS_termcap_modes); OUTPUT_IF (TS_visual_mode); OUTPUT_IF (TS_keypad_mode); losecursor (); } void reset_terminal_modes () { if (! FRAME_TERMCAP_P (selected_frame)) { if (reset_terminal_modes_hook) (*reset_terminal_modes_hook) (); return; } if (TN_standout_width < 0) turn_off_highlight (); turn_off_insert (); OUTPUT_IF (TS_end_keypad_mode); OUTPUT_IF (TS_end_visual_mode); OUTPUT_IF (TS_end_termcap_modes); /* Output raw CR so kernel can track the cursor hpos. */ /* But on magic-cookie terminals this can erase an end-standout marker and cause the rest of the frame to be in standout, so move down first. */ if (TN_standout_width >= 0) cmputc ('\n'); cmputc ('\r'); } void update_begin (f) FRAME_PTR f; { updating_frame = f; if (! FRAME_TERMCAP_P (updating_frame)) (*update_begin_hook) (f); } void update_end (f) FRAME_PTR f; { if (! FRAME_TERMCAP_P (updating_frame)) { (*update_end_hook) (f); updating_frame = 0; return; } turn_off_insert (); background_highlight (); standout_requested = 0; updating_frame = 0; } void set_terminal_window (size) int size; { if (! FRAME_TERMCAP_P (updating_frame)) { (*set_terminal_window_hook) (size); return; } specified_window = size ? size : FRAME_HEIGHT (selected_frame); if (!scroll_region_ok) return; set_scroll_region (0, specified_window); } void set_scroll_region (start, stop) int start, stop; { char *buf; if (TS_set_scroll_region) { buf = tparam (TS_set_scroll_region, 0, 0, start, stop - 1); } else if (TS_set_scroll_region_1) { buf = tparam (TS_set_scroll_region_1, 0, 0, FRAME_HEIGHT (selected_frame), start, FRAME_HEIGHT (selected_frame) - stop, FRAME_HEIGHT (selected_frame)); } else { buf = tparam (TS_set_window, 0, 0, start, 0, stop, FRAME_WIDTH (selected_frame)); } OUTPUT (buf); xfree (buf); losecursor (); } void turn_on_insert () { if (!insert_mode) OUTPUT (TS_insert_mode); insert_mode = 1; } void turn_off_insert () { if (insert_mode) OUTPUT (TS_end_insert_mode); insert_mode = 0; } /* Handle highlighting when TN_standout_width (termcap sg) is not specified. In these terminals, output is affected by the value of standout mode when the output is written. These functions are called on all terminals, but do nothing on terminals whose standout mode does not work that way. */ void turn_off_highlight () { if (TN_standout_width < 0) { if (standout_mode) OUTPUT_IF (TS_end_standout_mode); standout_mode = 0; } } void turn_on_highlight () { if (TN_standout_width < 0) { if (!standout_mode) OUTPUT_IF (TS_standout_mode); standout_mode = 1; } } /* Set standout mode to the state it should be in for empty space inside windows. What this is, depends on the user option inverse-video. */ void background_highlight () { if (TN_standout_width >= 0) return; if (inverse_video) turn_on_highlight (); else turn_off_highlight (); } /* Set standout mode to the mode specified for the text to be output. */ static void highlight_if_desired () { if (TN_standout_width >= 0) return; if (!inverse_video == !standout_requested) turn_off_highlight (); else turn_on_highlight (); } /* Handle standout mode for terminals in which TN_standout_width >= 0. On these terminals, standout is controlled by markers that live inside the terminal's memory. TN_standout_width is the width that the marker occupies in memory. Standout runs from the marker to the end of the line on some terminals, or to the next turn-off-standout marker (TS_end_standout_mode) string on other terminals. */ /* Write a standout marker or end-standout marker at the front of the line at vertical position vpos. */ void write_standout_marker (flag, vpos) int flag, vpos; { if (flag || (TS_end_standout_mode && !TF_teleray && !se_is_so && !(TF_xs && TN_standout_width == 0))) { cmgoto (vpos, 0); cmplus (TN_standout_width); OUTPUT (flag ? TS_standout_mode : TS_end_standout_mode); chars_wasted[curY] = TN_standout_width | 0100; } } /* External interface to control of standout mode. Call this when about to modify line at position VPOS and not change whether it is highlighted. */ void reassert_line_highlight (highlight, vpos) int highlight; int vpos; { if (! FRAME_TERMCAP_P ((updating_frame ? updating_frame : selected_frame))) { (*reassert_line_highlight_hook) (highlight, vpos); return; } if (TN_standout_width < 0) /* Handle terminals where standout takes affect at output time */ standout_requested = highlight; else if (chars_wasted[vpos] == 0) /* For terminals with standout markers, write one on this line if there isn't one already. */ write_standout_marker (highlight, vpos); } /* Call this when about to modify line at position VPOS and change whether it is highlighted. */ void change_line_highlight (new_highlight, vpos, first_unused_hpos) int new_highlight, vpos, first_unused_hpos; { standout_requested = new_highlight; if (! FRAME_TERMCAP_P (updating_frame)) { (*change_line_highlight_hook) (new_highlight, vpos, first_unused_hpos); return; } cursor_to (vpos, 0); if (TN_standout_width < 0) background_highlight (); /* If line starts with a marker, delete the marker */ else if (TS_clr_line && chars_wasted[curY]) { turn_off_insert (); /* On Teleray, make sure to erase the SO marker. */ if (TF_teleray) { cmgoto (curY - 1, FRAME_WIDTH (selected_frame) - 4); OUTPUT ("\033S"); curY++; /* ESC S moves to next line where the TS_standout_mode was */ curX = 0; } else cmgoto (curY, 0); /* reposition to kill standout marker */ } clear_end_of_line_raw (first_unused_hpos); reassert_line_highlight (new_highlight, curY); } /* Move to absolute position, specified origin 0 */ void cursor_to (row, col) int row, col; { if (! FRAME_TERMCAP_P ((updating_frame ? updating_frame : selected_frame)) && cursor_to_hook) { (*cursor_to_hook) (row, col); return; } /* Detect the case where we are called from reset_sys_modes and the costs have never been calculated. Do nothing. */ if (chars_wasted == 0) return; col += chars_wasted[row] & 077; if (curY == row && curX == col) return; if (!TF_standout_motion) background_highlight (); if (!TF_insmode_motion) turn_off_insert (); cmgoto (row, col); } /* Similar but don't take any account of the wasted characters. */ void raw_cursor_to (row, col) int row, col; { if (! FRAME_TERMCAP_P ((updating_frame ? updating_frame : selected_frame))) { (*raw_cursor_to_hook) (row, col); return; } if (curY == row && curX == col) return; if (!TF_standout_motion) background_highlight (); if (!TF_insmode_motion) turn_off_insert (); cmgoto (row, col); } /* Erase operations */ /* clear from cursor to end of frame */ void clear_to_end () { register int i; if (clear_to_end_hook && ! FRAME_TERMCAP_P (updating_frame)) { (*clear_to_end_hook) (); return; } if (TS_clr_to_bottom) { background_highlight (); OUTPUT (TS_clr_to_bottom); bzero (chars_wasted + curY, FRAME_HEIGHT (selected_frame) - curY); } else { for (i = curY; i < FRAME_HEIGHT (selected_frame); i++) { cursor_to (i, 0); clear_end_of_line_raw (FRAME_WIDTH (selected_frame)); } } } /* Clear entire frame */ void clear_frame () { if (clear_frame_hook && ! FRAME_TERMCAP_P ((updating_frame ? updating_frame : selected_frame))) { (*clear_frame_hook) (); return; } if (TS_clr_frame) { background_highlight (); OUTPUT (TS_clr_frame); bzero (chars_wasted, FRAME_HEIGHT (selected_frame)); cmat (0, 0); } else { cursor_to (0, 0); clear_to_end (); } } /* Clear to end of line, but do not clear any standout marker. Assumes that the cursor is positioned at a character of real text, which implies it cannot be before a standout marker unless the marker has zero width. Note that the cursor may be moved. */ void clear_end_of_line (first_unused_hpos) int first_unused_hpos; { static GLYPH buf = SPACEGLYPH; if (FRAME_TERMCAP_P (selected_frame) && chars_wasted != 0 && TN_standout_width == 0 && curX == 0 && chars_wasted[curY] != 0) write_glyphs (&buf, 1); clear_end_of_line_raw (first_unused_hpos); } /* Clear from cursor to end of line. Assume that the line is already clear starting at column first_unused_hpos. If the cursor is at a standout marker, erase the marker. Note that the cursor may be moved, on terminals lacking a `ce' string. */ void clear_end_of_line_raw (first_unused_hpos) int first_unused_hpos; { register int i; if (clear_end_of_line_hook && ! FRAME_TERMCAP_P ((updating_frame ? updating_frame : selected_frame))) { (*clear_end_of_line_hook) (first_unused_hpos); return; } /* Detect the case where we are called from reset_sys_modes and the costs have never been calculated. Do nothing. */ if (chars_wasted == 0) return; first_unused_hpos += chars_wasted[curY] & 077; if (curX >= first_unused_hpos) return; /* Notice if we are erasing a magic cookie */ if (curX == 0) chars_wasted[curY] = 0; background_highlight (); if (TS_clr_line) { OUTPUT1 (TS_clr_line); } else { /* have to do it the hard way */ turn_off_insert (); /* Do not write in last row last col with Autowrap on. */ if (AutoWrap && curY == FRAME_HEIGHT (selected_frame) - 1 && first_unused_hpos == FRAME_WIDTH (selected_frame)) first_unused_hpos--; for (i = curX; i < first_unused_hpos; i++) { if (termscript) fputc (' ', termscript); putchar (' '); } cmplus (first_unused_hpos - curX); } } /* Encode SRC_LEN glyphs starting at SRC to terminal output codes and store them at DST. Do not write more than DST_LEN bytes. That may require stopping before all SRC_LEN input glyphs have been converted. We store the number of glyphs actually converted in *CONSUMED. The return value is the number of bytes store in DST. */ int encode_terminal_code (src, dst, src_len, dst_len, consumed) GLYPH *src; int src_len; unsigned char *dst; int dst_len, *consumed; { GLYPH *src_start = src, *src_end = src + src_len; unsigned char *dst_start = dst, *dst_end = dst + dst_len; register GLYPH g; unsigned int c; unsigned char workbuf[4], *buf; int len; register int tlen = GLYPH_TABLE_LENGTH; register Lisp_Object *tbase = GLYPH_TABLE_BASE; int result; struct coding_system *coding; coding = (CODING_REQUIRE_ENCODING (&terminal_coding) ? &terminal_coding : &safe_terminal_coding); while (src < src_end) { g = *src; /* We must skip glyphs to be padded for a wide character. */ if (! (g & GLYPH_MASK_PADDING)) { if ((c = GLYPH_CHAR (selected_frame, g)) > MAX_CHAR) { c = ' '; g = MAKE_GLYPH (selected_frame, c, GLYPH_FACE (selected_frame, g)); } if (COMPOSITE_CHAR_P (c)) { /* If C is a composite character, we can display only the first component. */ g = cmpchar_table[COMPOSITE_CHAR_ID (c)]->glyph[0], c = GLYPH_CHAR (selected_frame, g); } if (c < tlen) { /* G has an entry in Vglyph_table, so process any alias before testing for simpleness. */ GLYPH_FOLLOW_ALIASES (tbase, tlen, g); c = GLYPH_CHAR (selected_frame, g); } if (GLYPH_SIMPLE_P (tbase, tlen, g)) /* We set the multi-byte form of C at BUF. */ len = CHAR_STRING (c, workbuf, buf); else { /* We have a string in Vglyph_table. */ len = GLYPH_LENGTH (tbase, g); buf = GLYPH_STRING (tbase, g); } result = encode_coding (coding, buf, dst, len, dst_end - dst); len -= coding->consumed; dst += coding->produced; if (result == CODING_FINISH_INSUFFICIENT_DST || (result == CODING_FINISH_INSUFFICIENT_SRC && len > dst_end - dst)) /* The remaining output buffer is too short. We must break the loop here without increasing SRC so that the next call of this function starts from the same glyph. */ break; if (len > 0) { /* This is the case that a code of the range 0200..0237 exists in buf. We must just write out such a code. */ buf += coding->consumed; while (len--) *dst++ = *buf++; } } src++; } *consumed = src - src_start; return (dst - dst_start); } void write_glyphs (string, len) register GLYPH *string; register int len; { register GLYPH g; register int tlen = GLYPH_TABLE_LENGTH; register Lisp_Object *tbase = GLYPH_TABLE_BASE; int produced, consumed; if (write_glyphs_hook && ! FRAME_TERMCAP_P ((updating_frame ? updating_frame : selected_frame))) { (*write_glyphs_hook) (string, len); return; } highlight_if_desired (); turn_off_insert (); /* Don't dare write in last column of bottom line, if AutoWrap, since that would scroll the whole frame on some terminals. */ if (AutoWrap && curY + 1 == FRAME_HEIGHT (selected_frame) && (curX + len - (chars_wasted[curY] & 077) == FRAME_WIDTH (selected_frame))) len --; if (len <= 0) return; cmplus (len); /* The mode bit CODING_MODE_LAST_BLOCK should be set to 1 only at the tail. */ terminal_coding.mode &= ~CODING_MODE_LAST_BLOCK; while (len > 0) { /* We use shared conversion buffer of the current size (1024 bytes at least). Usually it is sufficient, but if not, we just repeat the loop. */ produced = encode_terminal_code (string, conversion_buffer, len, conversion_buffer_size, &consumed); if (produced > 0) { fwrite (conversion_buffer, 1, produced, stdout); if (ferror (stdout)) clearerr (stdout); if (termscript) fwrite (conversion_buffer, 1, produced, termscript); } len -= consumed; string += consumed; } /* We may have to output some codes to terminate the writing. */ if (CODING_REQUIRE_FLUSHING (&terminal_coding)) { terminal_coding.mode |= CODING_MODE_LAST_BLOCK; encode_coding (&terminal_coding, "", conversion_buffer, 0, conversion_buffer_size); if (terminal_coding.produced > 0) { fwrite (conversion_buffer, 1, terminal_coding.produced, stdout); if (ferror (stdout)) clearerr (stdout); if (termscript) fwrite (conversion_buffer, 1, terminal_coding.produced, termscript); } } cmcheckmagic (); } /* If start is zero, insert blanks instead of a string at start */ void insert_glyphs (start, len) register GLYPH *start; register int len; { char *buf; GLYPH g; register int tlen = GLYPH_TABLE_LENGTH; register Lisp_Object *tbase = GLYPH_TABLE_BASE; if (len <= 0) return; if (insert_glyphs_hook && ! FRAME_TERMCAP_P (updating_frame)) { (*insert_glyphs_hook) (start, len); return; } highlight_if_desired (); if (TS_ins_multi_chars) { buf = tparam (TS_ins_multi_chars, 0, 0, len); OUTPUT1 (buf); xfree (buf); if (start) write_glyphs (start, len); return; } turn_on_insert (); cmplus (len); /* The bit CODING_MODE_LAST_BLOCK should be set to 1 only at the tail. */ terminal_coding.mode &= ~CODING_MODE_LAST_BLOCK; while (len-- > 0) { int produced, consumed; OUTPUT1_IF (TS_ins_char); if (!start) g = SPACEGLYPH; else { g = *start++; /* We must open sufficient space for a character which occupies more than one column. */ while (*start & GLYPH_MASK_PADDING) { OUTPUT1_IF (TS_ins_char); start++, len--; } } if (len <= 0) /* This is the last glyph. */ terminal_coding.mode |= CODING_MODE_LAST_BLOCK; /* We use shared conversion buffer of the current size (1024 bytes at least). It is surely sufficient for just one glyph. */ produced = encode_terminal_code (&g, conversion_buffer, 1, conversion_buffer_size, &consumed); if (produced > 0) { fwrite (conversion_buffer, 1, produced, stdout); if (ferror (stdout)) clearerr (stdout); if (termscript) fwrite (conversion_buffer, 1, produced, termscript); } OUTPUT1_IF (TS_pad_inserted_char); } cmcheckmagic (); } void delete_glyphs (n) register int n; { char *buf; register int i; if (delete_glyphs_hook && ! FRAME_TERMCAP_P (updating_frame)) { (*delete_glyphs_hook) (n); return; } if (delete_in_insert_mode) { turn_on_insert (); } else { turn_off_insert (); OUTPUT_IF (TS_delete_mode); } if (TS_del_multi_chars) { buf = tparam (TS_del_multi_chars, 0, 0, n); OUTPUT1 (buf); xfree (buf); } else for (i = 0; i < n; i++) OUTPUT1 (TS_del_char); if (!delete_in_insert_mode) OUTPUT_IF (TS_end_delete_mode); } /* Insert N lines at vpos VPOS. If N is negative, delete -N lines. */ void ins_del_lines (vpos, n) int vpos, n; { char *multi = n > 0 ? TS_ins_multi_lines : TS_del_multi_lines; char *single = n > 0 ? TS_ins_line : TS_del_line; char *scroll = n > 0 ? TS_rev_scroll : TS_fwd_scroll; register int i = n > 0 ? n : -n; register char *buf; if (ins_del_lines_hook && ! FRAME_TERMCAP_P (updating_frame)) { (*ins_del_lines_hook) (vpos, n); return; } /* If the lines below the insertion are being pushed into the end of the window, this is the same as clearing; and we know the lines are already clear, since the matching deletion has already been done. So can ignore this. */ /* If the lines below the deletion are blank lines coming out of the end of the window, don't bother, as there will be a matching inslines later that will flush them. */ if (scroll_region_ok && vpos + i >= specified_window) return; if (!memory_below_frame && vpos + i >= FRAME_HEIGHT (selected_frame)) return; if (multi) { raw_cursor_to (vpos, 0); background_highlight (); buf = tparam (multi, 0, 0, i); OUTPUT (buf); xfree (buf); } else if (single) { raw_cursor_to (vpos, 0); background_highlight (); while (--i >= 0) OUTPUT (single); if (TF_teleray) curX = 0; } else { set_scroll_region (vpos, specified_window); if (n < 0) raw_cursor_to (specified_window - 1, 0); else raw_cursor_to (vpos, 0); background_highlight (); while (--i >= 0) OUTPUTL (scroll, specified_window - vpos); set_scroll_region (0, specified_window); } if (TN_standout_width >= 0) { register int lower_limit = (scroll_region_ok ? specified_window : FRAME_HEIGHT (selected_frame)); if (n < 0) { bcopy (&chars_wasted[vpos - n], &chars_wasted[vpos], lower_limit - vpos + n); bzero (&chars_wasted[lower_limit + n], - n); } else { bcopy (&chars_wasted[vpos], ©buf[vpos], lower_limit - vpos - n); bcopy (©buf[vpos], &chars_wasted[vpos + n], lower_limit - vpos - n); bzero (&chars_wasted[vpos], n); } } if (!scroll_region_ok && memory_below_frame && n < 0) { cursor_to (FRAME_HEIGHT (selected_frame) + n, 0); clear_to_end (); } } /* Compute cost of sending "str", in characters, not counting any line-dependent padding. */ int string_cost (str) char *str; { cost = 0; if (str) tputs (str, 0, evalcost); return cost; } /* Compute cost of sending "str", in characters, counting any line-dependent padding at one line. */ static int string_cost_one_line (str) char *str; { cost = 0; if (str) tputs (str, 1, evalcost); return cost; } /* Compute per line amount of line-dependent padding, in tenths of characters. */ int per_line_cost (str) register char *str; { cost = 0; if (str) tputs (str, 0, evalcost); cost = - cost; if (str) tputs (str, 10, evalcost); return cost; } #ifndef old /* char_ins_del_cost[n] is cost of inserting N characters. char_ins_del_cost[-n] is cost of deleting N characters. The length of this vector is based on max_frame_width. */ int *char_ins_del_vector; #define char_ins_del_cost(f) (&char_ins_del_vector[FRAME_WIDTH ((f))]) #endif /* ARGSUSED */ static void calculate_ins_del_char_costs (frame) FRAME_PTR frame; { int ins_startup_cost, del_startup_cost; int ins_cost_per_char, del_cost_per_char; register int i; register int *p; if (TS_ins_multi_chars) { ins_cost_per_char = 0; ins_startup_cost = string_cost_one_line (TS_ins_multi_chars); } else if (TS_ins_char || TS_pad_inserted_char || (TS_insert_mode && TS_end_insert_mode)) { ins_startup_cost = (30 * (string_cost (TS_insert_mode) + string_cost (TS_end_insert_mode))) / 100; ins_cost_per_char = (string_cost_one_line (TS_ins_char) + string_cost_one_line (TS_pad_inserted_char)); } else { ins_startup_cost = 9999; ins_cost_per_char = 0; } if (TS_del_multi_chars) { del_cost_per_char = 0; del_startup_cost = string_cost_one_line (TS_del_multi_chars); } else if (TS_del_char) { del_startup_cost = (string_cost (TS_delete_mode) + string_cost (TS_end_delete_mode)); if (delete_in_insert_mode) del_startup_cost /= 2; del_cost_per_char = string_cost_one_line (TS_del_char); } else { del_startup_cost = 9999; del_cost_per_char = 0; } /* Delete costs are at negative offsets */ p = &char_ins_del_cost (frame)[0]; for (i = FRAME_WIDTH (frame); --i >= 0;) *--p = (del_startup_cost += del_cost_per_char); /* Doing nothing is free */ p = &char_ins_del_cost (frame)[0]; *p++ = 0; /* Insert costs are at positive offsets */ for (i = FRAME_WIDTH (frame); --i >= 0;) *p++ = (ins_startup_cost += ins_cost_per_char); } void calculate_costs (frame) FRAME_PTR frame; { register char *f = (TS_set_scroll_region ? TS_set_scroll_region : TS_set_scroll_region_1); FRAME_COST_BAUD_RATE (frame) = baud_rate; scroll_region_cost = string_cost (f); #ifdef HAVE_X_WINDOWS if (FRAME_X_P (frame)) { do_line_insertion_deletion_costs (frame, 0, ".5*", 0, ".5*", 0, 0, x_screen_planes (frame)); scroll_region_cost = 0; return; } #endif /* These variables are only used for terminal stuff. They are allocated once for the terminal frame of X-windows emacs, but not used afterwards. char_ins_del_vector (i.e., char_ins_del_cost) isn't used because X turns off char_ins_del_ok. chars_wasted and copybuf are only used here in term.c in cases where the term hook isn't called. */ max_frame_height = max (max_frame_height, FRAME_HEIGHT (frame)); max_frame_width = max (max_frame_width, FRAME_WIDTH (frame)); if (chars_wasted != 0) chars_wasted = (char *) xrealloc (chars_wasted, max_frame_height); else chars_wasted = (char *) xmalloc (max_frame_height); if (copybuf != 0) copybuf = (char *) xrealloc (copybuf, max_frame_height); else copybuf = (char *) xmalloc (max_frame_height); if (char_ins_del_vector != 0) char_ins_del_vector = (int *) xrealloc (char_ins_del_vector, (sizeof (int) + 2 * max_frame_width * sizeof (int))); else char_ins_del_vector = (int *) xmalloc (sizeof (int) + 2 * max_frame_width * sizeof (int)); bzero (chars_wasted, max_frame_height); bzero (copybuf, max_frame_height); bzero (char_ins_del_vector, (sizeof (int) + 2 * max_frame_width * sizeof (int))); if (f && (!TS_ins_line && !TS_del_line)) do_line_insertion_deletion_costs (frame, TS_rev_scroll, TS_ins_multi_lines, TS_fwd_scroll, TS_del_multi_lines, f, f, 1); else do_line_insertion_deletion_costs (frame, TS_ins_line, TS_ins_multi_lines, TS_del_line, TS_del_multi_lines, 0, 0, 1); calculate_ins_del_char_costs (frame); /* Don't use TS_repeat if its padding is worse than sending the chars */ if (TS_repeat && per_line_cost (TS_repeat) * baud_rate < 9000) RPov = string_cost (TS_repeat); else RPov = FRAME_WIDTH (frame) * 2; cmcostinit (); /* set up cursor motion costs */ } struct fkey_table { char *cap, *name; }; /* Termcap capability names that correspond directly to X keysyms. Some of these (marked "terminfo") aren't supplied by old-style (Berkeley) termcap entries. They're listed in X keysym order; except we put the keypad keys first, so that if they clash with other keys (as on the IBM PC keyboard) they get overridden. */ static struct fkey_table keys[] = { "kh", "home", /* termcap */ "kl", "left", /* termcap */ "ku", "up", /* termcap */ "kr", "right", /* termcap */ "kd", "down", /* termcap */ "%8", "prior", /* terminfo */ "%5", "next", /* terminfo */ "@7", "end", /* terminfo */ "@1", "begin", /* terminfo */ "*6", "select", /* terminfo */ "%9", "print", /* terminfo */ "@4", "execute", /* terminfo --- actually the `command' key */ /* * "insert" --- see below */ "&8", "undo", /* terminfo */ "%0", "redo", /* terminfo */ "%7", "menu", /* terminfo --- actually the `options' key */ "@0", "find", /* terminfo */ "@2", "cancel", /* terminfo */ "%1", "help", /* terminfo */ /* * "break" goes here, but can't be reliably intercepted with termcap */ "&4", "reset", /* terminfo --- actually `restart' */ /* * "system" and "user" --- no termcaps */ "kE", "clearline", /* terminfo */ "kA", "insertline", /* terminfo */ "kL", "deleteline", /* terminfo */ "kI", "insertchar", /* terminfo */ "kD", "deletechar", /* terminfo */ "kB", "backtab", /* terminfo */ /* * "kp_backtab", "kp-space", "kp-tab" --- no termcaps */ "@8", "kp-enter", /* terminfo */ /* * "kp-f1", "kp-f2", "kp-f3" "kp-f4", * "kp-multiply", "kp-add", "kp-separator", * "kp-subtract", "kp-decimal", "kp-divide", "kp-0"; * --- no termcaps for any of these. */ "K4", "kp-1", /* terminfo */ /* * "kp-2" --- no termcap */ "K5", "kp-3", /* terminfo */ /* * "kp-4" --- no termcap */ "K2", "kp-5", /* terminfo */ /* * "kp-6" --- no termcap */ "K1", "kp-7", /* terminfo */ /* * "kp-8" --- no termcap */ "K3", "kp-9", /* terminfo */ /* * "kp-equal" --- no termcap */ "k1", "f1", "k2", "f2", "k3", "f3", "k4", "f4", "k5", "f5", "k6", "f6", "k7", "f7", "k8", "f8", "k9", "f9", }; static char **term_get_fkeys_arg; static Lisp_Object term_get_fkeys_1 (); /* Find the escape codes sent by the function keys for Vfunction_key_map. This function scans the termcap function key sequence entries, and adds entries to Vfunction_key_map for each function key it finds. */ void term_get_fkeys (address) char **address; { /* We run the body of the function (term_get_fkeys_1) and ignore all Lisp errors during the call. The only errors should be from Fdefine_key when given a key sequence containing an invalid prefix key. If the termcap defines function keys which use a prefix that is already bound to a command by the default bindings, we should silently ignore that function key specification, rather than giving the user an error and refusing to run at all on such a terminal. */ extern Lisp_Object Fidentity (); term_get_fkeys_arg = address; internal_condition_case (term_get_fkeys_1, Qerror, Fidentity); } static Lisp_Object term_get_fkeys_1 () { int i; char **address = term_get_fkeys_arg; /* This can happen if CANNOT_DUMP or with strange options. */ if (!initialized) Vfunction_key_map = Fmake_sparse_keymap (Qnil); for (i = 0; i < (sizeof (keys)/sizeof (keys[0])); i++) { char *sequence = tgetstr (keys[i].cap, address); if (sequence) Fdefine_key (Vfunction_key_map, build_string (sequence), Fmake_vector (make_number (1), intern (keys[i].name))); } /* The uses of the "k0" capability are inconsistent; sometimes it describes F10, whereas othertimes it describes F0 and "k;" describes F10. We will attempt to politely accommodate both systems by testing for "k;", and if it is present, assuming that "k0" denotes F0, otherwise F10. */ { char *k_semi = tgetstr ("k;", address); char *k0 = tgetstr ("k0", address); char *k0_name = "f10"; if (k_semi) { Fdefine_key (Vfunction_key_map, build_string (k_semi), Fmake_vector (make_number (1), intern ("f10"))); k0_name = "f0"; } if (k0) Fdefine_key (Vfunction_key_map, build_string (k0), Fmake_vector (make_number (1), intern (k0_name))); } /* Set up cookies for numbered function keys above f10. */ { char fcap[3], fkey[4]; fcap[0] = 'F'; fcap[2] = '\0'; for (i = 11; i < 64; i++) { if (i <= 19) fcap[1] = '1' + i - 11; else if (i <= 45) fcap[1] = 'A' + i - 20; else fcap[1] = 'a' + i - 46; { char *sequence = tgetstr (fcap, address); if (sequence) { sprintf (fkey, "f%d", i); Fdefine_key (Vfunction_key_map, build_string (sequence), Fmake_vector (make_number (1), intern (fkey))); } } } } /* * Various mappings to try and get a better fit. */ { #define CONDITIONAL_REASSIGN(cap1, cap2, sym) \ if (!tgetstr (cap1, address)) \ { \ char *sequence = tgetstr (cap2, address); \ if (sequence) \ Fdefine_key (Vfunction_key_map, build_string (sequence), \ Fmake_vector (make_number (1), \ intern (sym))); \ } /* if there's no key_next keycap, map key_npage to `next' keysym */ CONDITIONAL_REASSIGN ("%5", "kN", "next"); /* if there's no key_prev keycap, map key_ppage to `previous' keysym */ CONDITIONAL_REASSIGN ("%8", "kP", "prior"); /* if there's no key_dc keycap, map key_ic to `insert' keysym */ CONDITIONAL_REASSIGN ("kD", "kI", "insert"); /* if there's no key_end keycap, map key_ll to 'end' keysym */ CONDITIONAL_REASSIGN ("@7", "kH", "end"); /* IBM has their own non-standard dialect of terminfo. If the standard name isn't found, try the IBM name. */ CONDITIONAL_REASSIGN ("kB", "KO", "backtab"); CONDITIONAL_REASSIGN ("@4", "kJ", "execute"); /* actually "action" */ CONDITIONAL_REASSIGN ("@4", "kc", "execute"); /* actually "command" */ CONDITIONAL_REASSIGN ("%7", "ki", "menu"); CONDITIONAL_REASSIGN ("@7", "kw", "end"); CONDITIONAL_REASSIGN ("F1", "k<", "f11"); CONDITIONAL_REASSIGN ("F2", "k>", "f12"); CONDITIONAL_REASSIGN ("%1", "kq", "help"); CONDITIONAL_REASSIGN ("*6", "kU", "select"); #undef CONDITIONAL_REASSIGN } } void term_init (terminal_type) char *terminal_type; { char *area; char **address = &area; char buffer[2044]; register char *p; int status; #ifdef WINDOWSNT initialize_w32_display (); Wcm_clear (); area = (char *) xmalloc (2044); if (area == 0) abort (); FrameRows = FRAME_HEIGHT (selected_frame); FrameCols = FRAME_WIDTH (selected_frame); specified_window = FRAME_HEIGHT (selected_frame); delete_in_insert_mode = 1; UseTabs = 0; scroll_region_ok = 0; /* Seems to insert lines when it's not supposed to, messing up the display. In doing a trace, it didn't seem to be called much, so I don't think we're losing anything by turning it off. */ line_ins_del_ok = 0; char_ins_del_ok = 1; baud_rate = 19200; FRAME_CAN_HAVE_SCROLL_BARS (selected_frame) = 0; FRAME_VERTICAL_SCROLL_BAR_TYPE (selected_frame) = vertical_scroll_bar_none; return; #else /* not WINDOWSNT */ Wcm_clear (); status = tgetent (buffer, terminal_type); if (status < 0) { #ifdef TERMINFO fatal ("Cannot open terminfo database file"); #else fatal ("Cannot open termcap database file"); #endif } if (status == 0) { #ifdef TERMINFO fatal ("Terminal type %s is not defined.\n\ If that is not the actual type of terminal you have,\n\ use the Bourne shell command `TERM=... export TERM' (C-shell:\n\ `setenv TERM ...') to specify the correct type. It may be necessary\n\ to do `unset TERMINFO' (C-shell: `unsetenv TERMINFO') as well.", terminal_type); #else fatal ("Terminal type %s is not defined.\n\ If that is not the actual type of terminal you have,\n\ use the Bourne shell command `TERM=... export TERM' (C-shell:\n\ `setenv TERM ...') to specify the correct type. It may be necessary\n\ to do `unset TERMCAP' (C-shell: `unsetenv TERMCAP') as well.", terminal_type); #endif } #ifdef TERMINFO area = (char *) xmalloc (2044); #else area = (char *) xmalloc (strlen (buffer)); #endif /* not TERMINFO */ if (area == 0) abort (); TS_ins_line = tgetstr ("al", address); TS_ins_multi_lines = tgetstr ("AL", address); TS_bell = tgetstr ("bl", address); BackTab = tgetstr ("bt", address); TS_clr_to_bottom = tgetstr ("cd", address); TS_clr_line = tgetstr ("ce", address); TS_clr_frame = tgetstr ("cl", address); ColPosition = tgetstr ("ch", address); AbsPosition = tgetstr ("cm", address); CR = tgetstr ("cr", address); TS_set_scroll_region = tgetstr ("cs", address); TS_set_scroll_region_1 = tgetstr ("cS", address); RowPosition = tgetstr ("cv", address); TS_del_char = tgetstr ("dc", address); TS_del_multi_chars = tgetstr ("DC", address); TS_del_line = tgetstr ("dl", address); TS_del_multi_lines = tgetstr ("DL", address); TS_delete_mode = tgetstr ("dm", address); TS_end_delete_mode = tgetstr ("ed", address); TS_end_insert_mode = tgetstr ("ei", address); Home = tgetstr ("ho", address); TS_ins_char = tgetstr ("ic", address); TS_ins_multi_chars = tgetstr ("IC", address); TS_insert_mode = tgetstr ("im", address); TS_pad_inserted_char = tgetstr ("ip", address); TS_end_keypad_mode = tgetstr ("ke", address); TS_keypad_mode = tgetstr ("ks", address); LastLine = tgetstr ("ll", address); Right = tgetstr ("nd", address); Down = tgetstr ("do", address); if (!Down) Down = tgetstr ("nl", address); /* Obsolete name for "do" */ #ifdef VMS /* VMS puts a carriage return before each linefeed, so it is not safe to use linefeeds. */ if (Down && Down[0] == '\n' && Down[1] == '\0') Down = 0; #endif /* VMS */ if (tgetflag ("bs")) Left = "\b"; /* can't possibly be longer! */ else /* (Actually, "bs" is obsolete...) */ Left = tgetstr ("le", address); if (!Left) Left = tgetstr ("bc", address); /* Obsolete name for "le" */ TS_pad_char = tgetstr ("pc", address); TS_repeat = tgetstr ("rp", address); TS_end_standout_mode = tgetstr ("se", address); TS_fwd_scroll = tgetstr ("sf", address); TS_standout_mode = tgetstr ("so", address); TS_rev_scroll = tgetstr ("sr", address); Wcm.cm_tab = tgetstr ("ta", address); TS_end_termcap_modes = tgetstr ("te", address); TS_termcap_modes = tgetstr ("ti", address); TS_bold_mode = tgetstr ("md", address); TS_end_bold_mode = tgetstr ("me", address); TS_underscore_mode = tgetstr ("us", address); TS_end_underscore_mode = tgetstr ("ue", address); Up = tgetstr ("up", address); TS_visible_bell = tgetstr ("vb", address); TS_end_visual_mode = tgetstr ("ve", address); TS_visual_mode = tgetstr ("vs", address); TS_set_window = tgetstr ("wi", address); MultiUp = tgetstr ("UP", address); MultiDown = tgetstr ("DO", address); MultiLeft = tgetstr ("LE", address); MultiRight = tgetstr ("RI", address); MagicWrap = tgetflag ("xn"); /* Since we make MagicWrap terminals look like AutoWrap, we need to have the former flag imply the latter. */ AutoWrap = MagicWrap || tgetflag ("am"); memory_below_frame = tgetflag ("db"); TF_hazeltine = tgetflag ("hz"); must_write_spaces = tgetflag ("in"); meta_key = tgetflag ("km") || tgetflag ("MT"); TF_insmode_motion = tgetflag ("mi"); TF_standout_motion = tgetflag ("ms"); TF_underscore = tgetflag ("ul"); TF_xs = tgetflag ("xs"); TF_teleray = tgetflag ("xt"); term_get_fkeys (address); /* Get frame size from system, or else from termcap. */ { int height, width; get_frame_size (&width, &height); FRAME_WIDTH (selected_frame) = width; FRAME_HEIGHT (selected_frame) = height; } if (FRAME_WIDTH (selected_frame) <= 0) SET_FRAME_WIDTH (selected_frame, tgetnum ("co")); else /* Keep width and external_width consistent */ SET_FRAME_WIDTH (selected_frame, FRAME_WIDTH (selected_frame)); if (FRAME_HEIGHT (selected_frame) <= 0) FRAME_HEIGHT (selected_frame) = tgetnum ("li"); if (FRAME_HEIGHT (selected_frame) < 3 || FRAME_WIDTH (selected_frame) < 3) fatal ("Screen size %dx%d is too small", FRAME_HEIGHT (selected_frame), FRAME_WIDTH (selected_frame)); min_padding_speed = tgetnum ("pb"); TN_standout_width = tgetnum ("sg"); TabWidth = tgetnum ("tw"); #ifdef VMS /* These capabilities commonly use ^J. I don't know why, but sending them on VMS does not work; it causes following spaces to be lost, sometimes. For now, the simplest fix is to avoid using these capabilities ever. */ if (Down && Down[0] == '\n') Down = 0; #endif /* VMS */ if (!TS_bell) TS_bell = "\07"; if (!TS_fwd_scroll) TS_fwd_scroll = Down; PC = TS_pad_char ? *TS_pad_char : 0; if (TabWidth < 0) TabWidth = 8; /* Turned off since /etc/termcap seems to have :ta= for most terminals and newer termcap doc does not seem to say there is a default. if (!Wcm.cm_tab) Wcm.cm_tab = "\t"; */ if (TS_standout_mode == 0) { TN_standout_width = tgetnum ("ug"); TS_end_standout_mode = tgetstr ("ue", address); TS_standout_mode = tgetstr ("us", address); } /* If no `se' string, try using a `me' string instead. If that fails, we can't use standout mode at all. */ if (TS_end_standout_mode == 0) { char *s = tgetstr ("me", address); if (s != 0) TS_end_standout_mode = s; else TS_standout_mode = 0; } if (TF_teleray) { Wcm.cm_tab = 0; /* Teleray: most programs want a space in front of TS_standout_mode, but Emacs can do without it (and give one extra column). */ TS_standout_mode = "\033RD"; TN_standout_width = 1; /* But that means we cannot rely on ^M to go to column zero! */ CR = 0; /* LF can't be trusted either -- can alter hpos */ /* if move at column 0 thru a line with TS_standout_mode */ Down = 0; } /* Special handling for certain terminal types known to need it */ if (!strcmp (terminal_type, "supdup")) { memory_below_frame = 1; Wcm.cm_losewrap = 1; } if (!strncmp (terminal_type, "c10", 3) || !strcmp (terminal_type, "perq")) { /* Supply a makeshift :wi string. This string is not valid in general since it works only for windows starting at the upper left corner; but that is all Emacs uses. This string works only if the frame is using the top of the video memory, because addressing is memory-relative. So first check the :ti string to see if that is true. It would be simpler if the :wi string could go in the termcap entry, but it can't because it is not fully valid. If it were in the termcap entry, it would confuse other programs. */ if (!TS_set_window) { p = TS_termcap_modes; while (*p && strcmp (p, "\033v ")) p++; if (*p) TS_set_window = "\033v%C %C %C %C "; } /* Termcap entry often fails to have :in: flag */ must_write_spaces = 1; /* :ti string typically fails to have \E^G! in it */ /* This limits scope of insert-char to one line. */ strcpy (area, TS_termcap_modes); strcat (area, "\033\007!"); TS_termcap_modes = area; area += strlen (area) + 1; p = AbsPosition; /* Change all %+ parameters to %C, to handle values above 96 correctly for the C100. */ while (*p) { if (p[0] == '%' && p[1] == '+') p[1] = 'C'; p++; } } FrameRows = FRAME_HEIGHT (selected_frame); FrameCols = FRAME_WIDTH (selected_frame); specified_window = FRAME_HEIGHT (selected_frame); if (Wcm_init () == -1) /* can't do cursor motion */ #ifdef VMS fatal ("Terminal type \"%s\" is not powerful enough to run Emacs.\n\ It lacks the ability to position the cursor.\n\ If that is not the actual type of terminal you have, use either the\n\ DCL command `SET TERMINAL/DEVICE= ...' for DEC-compatible terminals,\n\ or `define EMACS_TERM \"terminal type\"' for non-DEC terminals.", terminal_type); #else /* not VMS */ # ifdef TERMINFO fatal ("Terminal type \"%s\" is not powerful enough to run Emacs.\n\ It lacks the ability to position the cursor.\n\ If that is not the actual type of terminal you have,\n\ use the Bourne shell command `TERM=... export TERM' (C-shell:\n\ `setenv TERM ...') to specify the correct type. It may be necessary\n\ to do `unset TERMINFO' (C-shell: `unsetenv TERMINFO') as well.", terminal_type); # else /* TERMCAP */ fatal ("Terminal type \"%s\" is not powerful enough to run Emacs.\n\ It lacks the ability to position the cursor.\n\ If that is not the actual type of terminal you have,\n\ use the Bourne shell command `TERM=... export TERM' (C-shell:\n\ `setenv TERM ...') to specify the correct type. It may be necessary\n\ to do `unset TERMCAP' (C-shell: `unsetenv TERMCAP') as well.", terminal_type); # endif /* TERMINFO */ #endif /*VMS */ if (FRAME_HEIGHT (selected_frame) <= 0 || FRAME_WIDTH (selected_frame) <= 0) fatal ("The frame size has not been specified"); delete_in_insert_mode = TS_delete_mode && TS_insert_mode && !strcmp (TS_delete_mode, TS_insert_mode); se_is_so = (TS_standout_mode && TS_end_standout_mode && !strcmp (TS_standout_mode, TS_end_standout_mode)); /* Remove width of standout marker from usable width of line */ if (TN_standout_width > 0) SET_FRAME_WIDTH (selected_frame, FRAME_WIDTH (selected_frame) - TN_standout_width); UseTabs = tabs_safe_p () && TabWidth == 8; scroll_region_ok = (Wcm.cm_abs && (TS_set_window || TS_set_scroll_region || TS_set_scroll_region_1)); line_ins_del_ok = (((TS_ins_line || TS_ins_multi_lines) && (TS_del_line || TS_del_multi_lines)) || (scroll_region_ok && TS_fwd_scroll && TS_rev_scroll)); char_ins_del_ok = ((TS_ins_char || TS_insert_mode || TS_pad_inserted_char || TS_ins_multi_chars) && (TS_del_char || TS_del_multi_chars)); fast_clear_end_of_line = TS_clr_line != 0; init_baud_rate (); if (read_socket_hook) /* Baudrate is somewhat */ /* meaningless in this case */ baud_rate = 9600; FRAME_CAN_HAVE_SCROLL_BARS (selected_frame) = 0; FRAME_VERTICAL_SCROLL_BAR_TYPE (selected_frame) = vertical_scroll_bar_none; #endif /* WINDOWSNT */ } /* VARARGS 1 */ void fatal (str, arg1, arg2) char *str, *arg1, *arg2; { fprintf (stderr, "emacs: "); fprintf (stderr, str, arg1, arg2); fprintf (stderr, "\n"); fflush (stderr); exit (1); } void syms_of_term () { DEFVAR_BOOL ("system-uses-terminfo", &system_uses_terminfo, "Non-nil means the system uses terminfo rather than termcap.\n\ This variable can be used by terminal emulator packages."); #ifdef TERMINFO system_uses_terminfo = 1; #else system_uses_terminfo = 0; #endif DEFVAR_LISP ("ring-bell-function", &Vring_bell_function, "Non-nil means call this function to ring the bell.\n\ The function should accept no arguments."); Vring_bell_function = Qnil; }