view src/cm.c @ 4952:19a72041c5ed

Mule-izing, various fixes related to char * arguments -------------------- ChangeLog entries follow: -------------------- modules/ChangeLog addition: 2010-01-26 Ben Wing <ben@xemacs.org> * postgresql/postgresql.c: * postgresql/postgresql.c (CHECK_LIVE_CONNECTION): * postgresql/postgresql.c (print_pgresult): * postgresql/postgresql.c (Fpq_conn_defaults): * postgresql/postgresql.c (Fpq_connectdb): * postgresql/postgresql.c (Fpq_connect_start): * postgresql/postgresql.c (Fpq_result_status): * postgresql/postgresql.c (Fpq_res_status): Mule-ize large parts of it. 2010-01-26 Ben Wing <ben@xemacs.org> * ldap/eldap.c (print_ldap): * ldap/eldap.c (allocate_ldap): Use write_ascstring(). src/ChangeLog addition: 2010-01-26 Ben Wing <ben@xemacs.org> * alloc.c: * alloc.c (build_ascstring): * alloc.c (build_msg_cistring): * alloc.c (staticpro_1): * alloc.c (staticpro_name): * alloc.c (staticpro_nodump_1): * alloc.c (staticpro_nodump_name): * alloc.c (unstaticpro_nodump_1): * alloc.c (mcpro_1): * alloc.c (mcpro_name): * alloc.c (object_memory_usage_stats): * alloc.c (common_init_alloc_early): * alloc.c (init_alloc_once_early): * buffer.c (print_buffer): * buffer.c (vars_of_buffer): * buffer.c (common_init_complex_vars_of_buffer): * buffer.c (init_initial_directory): * bytecode.c (invalid_byte_code): * bytecode.c (print_compiled_function): * bytecode.c (mark_compiled_function): * chartab.c (print_table_entry): * chartab.c (print_char_table): * config.h.in: * console-gtk.c: * console-gtk.c (gtk_device_to_console_connection): * console-gtk.c (gtk_semi_canonicalize_console_connection): * console-gtk.c (gtk_canonicalize_console_connection): * console-gtk.c (gtk_semi_canonicalize_device_connection): * console-gtk.c (gtk_canonicalize_device_connection): * console-stream.c (stream_init_frame_1): * console-stream.c (vars_of_console_stream): * console-stream.c (init_console_stream): * console-x.c (x_semi_canonicalize_console_connection): * console-x.c (x_semi_canonicalize_device_connection): * console-x.c (x_canonicalize_device_connection): * console-x.h: * data.c (eq_with_ebola_notice): * data.c (Fsubr_interactive): * data.c (Fnumber_to_string): * data.c (digit_to_number): * device-gtk.c (gtk_init_device): * device-msw.c (print_devmode): * device-x.c (x_event_name): * dialog-msw.c (handle_directory_dialog_box): * dialog-msw.c (handle_file_dialog_box): * dialog-msw.c (vars_of_dialog_mswindows): * doc.c (weird_doc): * doc.c (Fsnarf_documentation): * doc.c (vars_of_doc): * dumper.c (pdump): * dynarr.c: * dynarr.c (Dynarr_realloc): * editfns.c (Fuser_real_login_name): * editfns.c (get_home_directory): * elhash.c (print_hash_table_data): * elhash.c (print_hash_table): * emacs.c (main_1): * emacs.c (vars_of_emacs): * emodules.c: * emodules.c (_emodules_list): * emodules.c (Fload_module): * emodules.c (Funload_module): * emodules.c (Flist_modules): * emodules.c (find_make_module): * emodules.c (attempt_module_delete): * emodules.c (emodules_load): * emodules.c (emodules_doc_subr): * emodules.c (emodules_doc_sym): * emodules.c (syms_of_module): * emodules.c (vars_of_module): * emodules.h: * eval.c (print_subr): * eval.c (signal_call_debugger): * eval.c (build_error_data): * eval.c (signal_error): * eval.c (maybe_signal_error): * eval.c (signal_continuable_error): * eval.c (maybe_signal_continuable_error): * eval.c (signal_error_2): * eval.c (maybe_signal_error_2): * eval.c (signal_continuable_error_2): * eval.c (maybe_signal_continuable_error_2): * eval.c (signal_ferror): * eval.c (maybe_signal_ferror): * eval.c (signal_continuable_ferror): * eval.c (maybe_signal_continuable_ferror): * eval.c (signal_ferror_with_frob): * eval.c (maybe_signal_ferror_with_frob): * eval.c (signal_continuable_ferror_with_frob): * eval.c (maybe_signal_continuable_ferror_with_frob): * eval.c (syntax_error): * eval.c (syntax_error_2): * eval.c (maybe_syntax_error): * eval.c (sferror): * eval.c (sferror_2): * eval.c (maybe_sferror): * eval.c (invalid_argument): * eval.c (invalid_argument_2): * eval.c (maybe_invalid_argument): * eval.c (invalid_constant): * eval.c (invalid_constant_2): * eval.c (maybe_invalid_constant): * eval.c (invalid_operation): * eval.c (invalid_operation_2): * eval.c (maybe_invalid_operation): * eval.c (invalid_change): * eval.c (invalid_change_2): * eval.c (maybe_invalid_change): * eval.c (invalid_state): * eval.c (invalid_state_2): * eval.c (maybe_invalid_state): * eval.c (wtaerror): * eval.c (stack_overflow): * eval.c (out_of_memory): * eval.c (print_multiple_value): * eval.c (issue_call_trapping_problems_warning): * eval.c (backtrace_specials): * eval.c (backtrace_unevalled_args): * eval.c (Fbacktrace): * eval.c (warn_when_safe): * event-Xt.c (modwarn): * event-Xt.c (modbarf): * event-Xt.c (check_modifier): * event-Xt.c (store_modifier): * event-Xt.c (emacs_Xt_format_magic_event): * event-Xt.c (describe_event): * event-gtk.c (dragndrop_data_received): * event-gtk.c (store_modifier): * event-gtk.c (gtk_reset_modifier_mapping): * event-msw.c (dde_eval_string): * event-msw.c (Fdde_alloc_advise_item): * event-msw.c (mswindows_dde_callback): * event-msw.c (FROB): * event-msw.c (emacs_mswindows_format_magic_event): * event-stream.c (external_debugging_print_event): * event-stream.c (execute_help_form): * event-stream.c (vars_of_event_stream): * events.c (print_event_1): * events.c (print_event): * events.c (event_equal): * extents.c (print_extent_1): * extents.c (print_extent): * extents.c (vars_of_extents): * faces.c (print_face): * faces.c (complex_vars_of_faces): * file-coding.c: * file-coding.c (print_coding_system): * file-coding.c (print_coding_system_in_print_method): * file-coding.c (default_query_method): * file-coding.c (find_coding_system): * file-coding.c (make_coding_system_1): * file-coding.c (chain_print): * file-coding.c (undecided_print): * file-coding.c (gzip_print): * file-coding.c (vars_of_file_coding): * file-coding.c (complex_vars_of_file_coding): * fileio.c: * fileio.c (report_file_type_error): * fileio.c (report_error_with_errno): * fileio.c (report_file_error): * fileio.c (barf_or_query_if_file_exists): * fileio.c (vars_of_fileio): * floatfns.c (matherr): * fns.c (print_bit_vector): * fns.c (Fmapconcat): * fns.c (add_suffix_to_symbol): * fns.c (add_prefix_to_symbol): * frame-gtk.c: * frame-gtk.c (Fgtk_window_id): * frame-x.c (def): * frame-x.c (x_cde_transfer_callback): * frame.c: * frame.c (Fmake_frame): * gc.c (show_gc_cursor_and_message): * gc.c (vars_of_gc): * glyphs-eimage.c (png_instantiate): * glyphs-eimage.c (tiff_instantiate): * glyphs-gtk.c (gtk_print_image_instance): * glyphs-msw.c (mswindows_print_image_instance): * glyphs-x.c (x_print_image_instance): * glyphs-x.c (update_widget_face): * glyphs.c (make_string_from_file): * glyphs.c (print_image_instance): * glyphs.c (signal_image_error): * glyphs.c (signal_image_error_2): * glyphs.c (signal_double_image_error): * glyphs.c (signal_double_image_error_2): * glyphs.c (xbm_mask_file_munging): * glyphs.c (pixmap_to_lisp_data): * glyphs.h: * gui.c (gui_item_display_flush_left): * hpplay.c (player_error_internal): * hpplay.c (myHandler): * intl-win32.c: * intl-win32.c (langcode_to_lang): * intl-win32.c (sublangcode_to_lang): * intl-win32.c (Fmswindows_get_locale_info): * intl-win32.c (lcid_to_locale_mule_or_no): * intl-win32.c (mswindows_multibyte_to_unicode_print): * intl-win32.c (complex_vars_of_intl_win32): * keymap.c: * keymap.c (print_keymap): * keymap.c (ensure_meta_prefix_char_keymapp): * keymap.c (Fkey_description): * keymap.c (Ftext_char_description): * lisp.h: * lisp.h (struct): * lisp.h (DECLARE_INLINE_HEADER): * lread.c (Fload_internal): * lread.c (locate_file): * lread.c (read_escape): * lread.c (read_raw_string): * lread.c (read1): * lread.c (read_list): * lread.c (read_compiled_function): * lread.c (init_lread): * lrecord.h: * marker.c (print_marker): * marker.c (marker_equal): * menubar-msw.c (displayable_menu_item): * menubar-x.c (command_builder_operate_menu_accelerator): * menubar.c (vars_of_menubar): * minibuf.c (reinit_complex_vars_of_minibuf): * minibuf.c (complex_vars_of_minibuf): * mule-charset.c (Fmake_charset): * mule-charset.c (complex_vars_of_mule_charset): * mule-coding.c (iso2022_print): * mule-coding.c (fixed_width_query): * number.c (bignum_print): * number.c (ratio_print): * number.c (bigfloat_print): * number.c (bigfloat_finalize): * objects-msw.c: * objects-msw.c (mswindows_color_to_string): * objects-msw.c (mswindows_color_list): * objects-tty.c: * objects-tty.c (tty_font_list): * objects-tty.c (tty_find_charset_font): * objects-xlike-inc.c (xft_find_charset_font): * objects-xlike-inc.c (endif): * print.c: * print.c (write_istring): * print.c (write_ascstring): * print.c (Fterpri): * print.c (Fprint): * print.c (print_error_message): * print.c (print_vector_internal): * print.c (print_cons): * print.c (print_string): * print.c (printing_unreadable_object): * print.c (print_internal): * print.c (print_float): * print.c (print_symbol): * process-nt.c (mswindows_report_winsock_error): * process-nt.c (nt_canonicalize_host_name): * process-unix.c (unix_canonicalize_host_name): * process.c (print_process): * process.c (report_process_error): * process.c (report_network_error): * process.c (make_process_internal): * process.c (Fstart_process_internal): * process.c (status_message): * process.c (putenv_internal): * process.c (vars_of_process): * process.h: * profile.c (vars_of_profile): * rangetab.c (print_range_table): * realpath.c (vars_of_realpath): * redisplay.c (vars_of_redisplay): * search.c (wordify): * search.c (Freplace_match): * sheap.c (sheap_adjust_h): * sound.c (report_sound_error): * sound.c (Fplay_sound_file): * specifier.c (print_specifier): * symbols.c (Fsubr_name): * symbols.c (do_symval_forwarding): * symbols.c (set_default_buffer_slot_variable): * symbols.c (set_default_console_slot_variable): * symbols.c (store_symval_forwarding): * symbols.c (default_value): * symbols.c (defsymbol_massage_name_1): * symbols.c (defsymbol_massage_name_nodump): * symbols.c (defsymbol_massage_name): * symbols.c (defsymbol_massage_multiword_predicate_nodump): * symbols.c (defsymbol_massage_multiword_predicate): * symbols.c (defsymbol_nodump): * symbols.c (defsymbol): * symbols.c (defkeyword): * symbols.c (defkeyword_massage_name): * symbols.c (check_module_subr): * symbols.c (deferror_1): * symbols.c (deferror): * symbols.c (deferror_massage_name): * symbols.c (deferror_massage_name_and_message): * symbols.c (defvar_magic): * symeval.h: * symeval.h (DEFVAR_SYMVAL_FWD): * sysdep.c: * sysdep.c (init_system_name): * sysdll.c: * sysdll.c (MAYBE_PREPEND_UNDERSCORE): * sysdll.c (dll_function): * sysdll.c (dll_variable): * sysdll.c (dll_error): * sysdll.c (dll_open): * sysdll.c (dll_close): * sysdll.c (image_for_address): * sysdll.c (my_find_image): * sysdll.c (search_linked_libs): * sysdll.h: * sysfile.h: * sysfile.h (DEFAULT_DIRECTORY_FALLBACK): * syswindows.h: * tests.c (DFC_CHECK_LENGTH): * tests.c (DFC_CHECK_CONTENT): * tests.c (Ftest_hash_tables): * text.c (vars_of_text): * text.h: * tooltalk.c (tt_opnum_string): * tooltalk.c (tt_message_arg_ival_string): * tooltalk.c (Ftooltalk_default_procid): * tooltalk.c (Ftooltalk_default_session): * tooltalk.c (init_tooltalk): * tooltalk.c (vars_of_tooltalk): * ui-gtk.c (Fdll_load): * ui-gtk.c (type_to_marshaller_type): * ui-gtk.c (Fgtk_import_function_internal): * ui-gtk.c (emacs_gtk_object_printer): * ui-gtk.c (emacs_gtk_boxed_printer): * unicode.c (unicode_to_ichar): * unicode.c (unicode_print): * unicode.c (unicode_query): * unicode.c (vars_of_unicode): * unicode.c (complex_vars_of_unicode): * win32.c: * win32.c (mswindows_report_process_error): * window.c (print_window): * xemacs.def.in.in: BASIC IDEA: Further fixing up uses of char * and CIbyte * to reflect their actual semantics; Mule-izing some code; redoing of the not-yet-working code to handle message translation. Clean up code to handle message-translation (not yet working). Create separate versions of build_msg_string() for working with Ibyte *, CIbyte *, and Ascbyte * arguments. Assert that Ascbyte * arguments are pure-ASCII. Make build_msg_string() be the same as build_msg_ascstring(). Create same three versions of GETTEXT() and DEFER_GETTEXT(). Also create build_defer_string() and variants for the equivalent of DEFER_GETTEXT() when building a string. Remove old CGETTEXT(). Clean up code where GETTEXT(), DEFER_GETTEXT(), build_msg_string(), etc. was being called and introduce some new calls to build_msg_string(), etc. Remove GETTEXT() from calls to weird_doc() -- we assume that the message snarfer knows about weird_doc(). Remove uses of DEFER_GETTEXT() from error messages in sysdep.c and instead use special comments /* @@@begin-snarf@@@ */ and /* @@@end-snarf@@@ */ that the message snarfer presumably knows about. Create build_ascstring() and use it in many instances in place of build_string(). The purpose of having Ascbyte * variants is to make the code more self-documenting in terms of what sort of semantics is expected for char * strings. In fact in the process of looking for uses of build_string(), much improperly Mule-ized was discovered. Mule-ize a lot of code as described in previous paragraph, e.g. in sysdep.c. Make the error functions take Ascbyte * strings and fix up a couple of places where non-pure-ASCII strings were being passed in (file-coding.c, mule-coding.c, unicode.c). (It's debatable whether we really need to make the error functions work this way. It helps catch places where code is written in a way that message translation won't work, but we may well never implement message translation.) Make staticpro() and friends take Ascbyte * strings instead of raw char * strings. Create a const_Ascbyte_ptr dynarr type to describe what's held by staticpro_names[] and friends, create pdump descriptions for const_Ascbyte_ptr dynarrs, and use them in place of specially-crafted staticpro descriptions. Mule-ize certain other functions (e.g. x_event_name) by correcting raw use of char * to Ascbyte *, Rawbyte * or another such type, and raw use of char[] buffers to another type (usually Ascbyte[]). Change many uses of write_c_string() to write_msg_string(), write_ascstring(), etc. Mule-ize emodules.c, emodules.h, sysdll.h. Fix some un-Mule-ized code in intl-win32.c. A comment in event-Xt.c and the limitations of the message snarfer (make-msgfile or whatever) is presumably incorrect -- it should be smart enough to handle function calls spread over more than one line. Clean up code in event-Xt.c that was written awkwardly for this reason. In config.h.in, instead of NEED_ERROR_CHECK_TYPES_INLINES, create a more general XEMACS_DEFS_NEEDS_INLINE_DECLS to indicate when inlined functions need to be declared in xemacs.defs.in.in, and make use of it in xemacs.defs.in.in. We need to do this because postgresql.c now calls qxestrdup(), which is an inline function. Make nconc2() and other such functions MODULE_API and put them in xemacs.defs.in.in since postgresql.c now uses them. Clean up indentation in lread.c and a few other places. In text.h, document ASSERT_ASCTEXT_ASCII() and ASSERT_ASCTEXT_ASCII_LEN(), group together the stand-in encodings and add some more for DLL symbols, function and variable names, etc.
author Ben Wing <ben@xemacs.org>
date Tue, 26 Jan 2010 23:22:30 -0600
parents 3d8143fc88e1
children 6f2158fa75ed
line wrap: on
line source

/* Cursor motion subroutines for XEmacs.
   Copyright (C) 1985, 1994, 1995 Free Software Foundation, Inc.
    loosely based primarily on public domain code written by Chris Torek

This file is part of XEmacs.

XEmacs 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.

XEmacs 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 XEmacs; see the file COPYING.  If not, write to
the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.  */

/* Synched up with: FSF 19.30.  Substantially different from FSF. */

/* #### This file is extremely junky and needs major fixup. */

#include <config.h>
#include "lisp.h"

#include "device.h"
#include "frame.h"
#include "lstream.h"
#include "redisplay.h"

#include "console-tty-impl.h"

#define	EXPENSIVE 2000

EXTERN_C char *tgoto (const char *cm, int hpos, int vpos);
EXTERN_C int tputs (const char *, int, void (*)(int));

static void cmgoto_for_real (struct console *c, int row, int col);

static int cm_cost_counter;		/* sums up costs */

static void
evalcost (int UNUSED (c))
{
  cm_cost_counter++;
}

/* Ugh -- cmputc() can't take a console argument, so we pass it in a global */
struct console *cmputc_console;

void
send_string_to_tty_console (struct console *c, unsigned char *str, int len)
{
  /* #### Ben sez: don't some terminals need nulls outputted
     for proper timing? */
  Lstream *lstr = XLSTREAM (CONSOLE_TTY_DATA (c)->outstream);

  if (CONSOLE_TTY_REAL_CURSOR_X (c) != CONSOLE_TTY_CURSOR_X (c)
      || CONSOLE_TTY_REAL_CURSOR_Y (c) != CONSOLE_TTY_CURSOR_Y (c))
    {
      int row = CONSOLE_TTY_CURSOR_Y (c);
      int col = CONSOLE_TTY_CURSOR_X (c);
      cmgoto_for_real (c, row, col);
    }

  if (len == 1)
    Lstream_putc (lstr, *str);
  else if (len > 0)
    Lstream_write (lstr, str, len);
}

void
cmputc (int c)
{
  unsigned char ch = (unsigned char) c;

  if (termscript)
    fputc (c, termscript);

  send_string_to_tty_console (cmputc_console, &ch, 1);
}

#if 0

/*
 * Terminals with magicwrap (xn) don't all behave identically.
 * The VT100 leaves the cursor in the last column but will wrap before
 * printing the next character.  I hear that the Concept terminal does
 * the wrap immediately but ignores the next newline it sees.  And some
 * terminals just have buggy firmware, and think that the cursor is still
 * in limbo if we use direct cursor addressing from the phantom column.
 * The only guaranteed safe thing to do is to emit a CRLF immediately
 * after we reach the last column; this takes us to a known state.
 */
void
cmcheckmagic (void)
{
  if (curX == FrameCols)
    {
      if (!MagicWrap || curY >= FrameRows - 1)
	ABORT ();
      if (termscript)
	putc ('\r', termscript);
      putchar ('\r');
      if (termscript)
	putc ('\n', termscript);
      putchar ('\n');
      curX = 0;
      curY++;
    }
}

#endif /* 0 */

/*
 * (Re)Initialize the cost factors, given the output speed of the
 * terminal in DEVICE_TTY_DATA (dev)->ospeed.  (Note: this holds B300,
 * B9600, etc -- ie stuff out of <sgtty.h>.)
 */
void
cm_cost_init (struct console *c)
{
  char *tmp;

  cm_cost_counter = 0;
#define	COST(x,e) (x \
		   ? (cm_cost_counter = 0, tputs (x, 1, e), cm_cost_counter) \
		   : EXPENSIVE)
#define MINCOST(x,e) ((x == 0) \
		      ? EXPENSIVE \
		      : (tmp = tgoto(x, 0, 0), COST(tmp,e)))

  TTY_COST (c).cm_up = COST (TTY_CM (c).up, evalcost);
  TTY_COST (c).cm_down = COST (TTY_CM (c).down, evalcost);
  TTY_COST (c).cm_left = COST (TTY_CM (c).left, evalcost);
  TTY_COST (c).cm_right = COST (TTY_CM (c).right, evalcost);
  TTY_COST (c).cm_home = COST (TTY_CM (c).home, evalcost);
  TTY_COST (c).cm_low_left = COST (TTY_CM (c).low_left, evalcost);
  TTY_COST (c).cm_car_return = COST (TTY_CM (c).car_return, evalcost);

  /*
   * These last three are actually minimum costs.  When (if) they are
   * candidates for the least-cost motion, the real cost is computed.
   * (Note that "0" is the assumed to generate the minimum cost.
   * While this is not necessarily true, I have yet to see a terminal
   * for which is not; all the terminals that have variable-cost
   * cursor motion seem to take straight numeric values.  --ACT)
   */

  TTY_COST (c).cm_abs = MINCOST (TTY_CM (c).abs, evalcost);
  TTY_COST (c).cm_hor_abs = MINCOST (TTY_CM (c).hor_abs, evalcost);
  TTY_COST (c).cm_ver_abs = MINCOST (TTY_CM (c).ver_abs, evalcost);

#undef MINCOST
#undef COST
}

/*
 * Calculate the cost to move from (srcy, srcx) to (dsty, dstx) using
 * up and down, and left and right, and motions.  If doit is set
 * actually perform the motion.
 */

#ifdef NOT_YET
static int
calccost (struct frame *f, int srcy, int srcx, int dsty, int dstx, int doit)
{
  struct console *c = XCONSOLE (FRAME_CONSOLE (f));
  int totalcost = 0;
  int deltay, deltax;
  char *motion;
  int motion_cost;

#if 0
  int ntabs, n2tabs, tabx, tab2x, tabcost;
#endif

  cmputc_console = c;
#if 0
    /* If have just wrapped on a terminal with xn,
       don't believe the cursor position: give up here
       and force use of absolute positioning.  */
    if (curX == Wcm.cm_cols)
      goto fail;
#endif

  deltay = dsty - srcy;
  if (!deltay)
    goto calculate_x;

  if (deltay < 0)
    {
      motion = TTY_CM (c).up;
      motion_cost = TTY_COST (c).cm_up;
      deltay = -deltay;
    }
  else
    {
      motion = TTY_CM (c).down;
      motion_cost = TTY_COST (c).cm_down;
    }

  if (motion_cost == EXPENSIVE)
    {
/*      if (doit) */
	/* #### printing OOF is not acceptable */
      return motion_cost;
    }

  totalcost = motion_cost * deltay;

  if (doit)
    while (--deltay >= 0)
      tputs (motion, 1, cmputc);

calculate_x:

  deltax = dstx - srcx;
  if (!deltax)
    goto done;

  if (deltax < 0)
    {
      motion = TTY_CM (c).left;
      motion_cost = TTY_COST (c).cm_left;
      deltax = -deltax;
    }
  else
    {
      motion = TTY_CM (c).right;
      motion_cost = TTY_COST (c).cm_right;
    }

  if (motion_cost == EXPENSIVE)
    {
/*	if (doit) */
        /* #### printing OOF is not acceptable */
	return motion_cost;
    }

  totalcost += motion_cost * deltax;

  if (doit)
    while (--deltax >= 0)
      tputs (motion, 1, cmputc);

done:
    return totalcost;
}
#endif /* NOT_YET */

#define	USEREL	0
#define	USEHOME	1
#define	USELL	2
#define	USECR	3

#ifdef OLD_CURSOR_MOTION_SHIT
void
cmgoto (struct frame *f, int row, int col)
{
  struct console *c = XCONSOLE (FRAME_CONSOLE (f));
  char *motion;
#if 0
  int frame_x = FRAME_CURSOR_X(f);
  int frame_y = FRAME_CURSOR_Y(f);
  int relcost, directcost, llcost;
  int homecost;
  int use;
  char *dcm;
#endif

  cmputc_console = c;

  /* First the degenerate case */
#if 0
  if (row == frame_y && col == frame_x)
    return;
#endif

  /* #### something is fucked with the non-absolute cases */
  motion = tgoto (TTY_CM (c).abs, col, row);
  tputs (motion, 1, cmputc);
  CONSOLE_TTY_DATA (c)->cursor_x = col;
  CONSOLE_TTY_DATA (c)->cursor_y = row;
  return;

#if 0
  if (frame_y >= 0 && frame_x >= 0)
    {
      /*
       * Pick least-cost motions
       */

      relcost = calccost (f, frame_y, frame_x, row, col, 0);
      use = USEREL;

      homecost = TTY_COST (c).cm_home;
      if (homecost < EXPENSIVE)
	homecost += calccost (f, 0, 0, row, col, 0);

      if (homecost < relcost)
	{
	  relcost = homecost;
	  use = USEHOME;
	}

      llcost = TTY_COST (c).cm_low_left;
      if (llcost < EXPENSIVE)
	llcost += calccost (f, frame_y - 1, 0, row, col, 0);

      if (llcost < relcost)
	{
	  relcost = llcost;
	  use = USELL;
	}

#if 0
      if ((crcost = Wcm.cc_cr) < BIG) {
	  if (Wcm.cm_autolf)
	      if (curY + 1 >= Wcm.cm_rows)
		  crcost = BIG;
	      else
		  crcost += calccost (curY + 1, 0, row, col, 0);
	  else
	      crcost += calccost (curY, 0, row, col, 0);
      }
      if (crcost < relcost)
	  relcost = crcost, use = USECR;
#endif

      directcost = TTY_COST (c).cm_abs;
      dcm = TTY_CM (c).abs;

      if (row == frame_y && TTY_COST (c).cm_hor_abs < EXPENSIVE)
	{
	  directcost = TTY_COST (c).cm_hor_abs;
	  dcm = TTY_CM (c).hor_abs;
	}
      else if (col == frame_x && TTY_COST (c).cm_ver_abs < EXPENSIVE)
	{
	  directcost = TTY_COST (c).cm_ver_abs;
	  dcm = TTY_CM (c).ver_abs;
	}
    }
  else
    {
      directcost = 0;
      relcost = 100000;
      dcm = TTY_CM (c).abs;
    }

  /*
   * In the following comparison, the = in <= is because when the costs
   * are the same, it looks nicer (I think) to move directly there.
   */
  if (directcost <= relcost)
    {
      /* compute REAL direct cost */
      cm_cost_counter = 0;
      motion = (dcm == TTY_CM (c).hor_abs
		? tgoto (dcm, row, col)
		: tgoto (dcm, col, row));
      tputs (motion, 1, evalcost);
      if (cm_cost_counter <= relcost)
	{	/* really is cheaper */
	  tputs (motion, 1, cmputc);
	  FRAME_CURSOR_Y (f) = row;
	  FRAME_CURSOR_X (f) = col;
	  return;
	}
    }

  switch (use)
    {
    case USEHOME:
      tputs (TTY_CM (c).home, 1, cmputc);
      FRAME_CURSOR_X (f) = 0;
      FRAME_CURSOR_Y (f) = 0;
      break;

    case USELL:
      tputs (TTY_CM (c).low_left, 1, cmputc);
      FRAME_CURSOR_Y (f) = FRAME_HEIGHT (f) - 1;
      FRAME_CURSOR_X (f) = 0;
      break;

#if 0
    case USECR:
      tputs (Wcm.cm_cr, 1, cmputc);
      if (Wcm.cm_autolf)
	curY++;
      curX = 0;
      break;
#endif
    }

  calccost (f, FRAME_CURSOR_Y (f), FRAME_CURSOR_X (f), row, col, 1);
  FRAME_CURSOR_Y (f) = row;
  FRAME_CURSOR_X (f) = col;
#endif
}
#endif /* OLD_CURSOR_MOTION_SHIT */

/*****************************************************************************
 cmgoto

 This function is responsible for getting the cursor from its current
 location to the passed location in the most efficient manner
 possible.
 ****************************************************************************/
static void
cmgoto_for_real (struct console *c, int row, int col)
{
  char *motion;

  cmputc_console = c;

  /* First make sure that we actually have to do any work at all. */
  if (CONSOLE_TTY_REAL_CURSOR_X (c) == col
      && CONSOLE_TTY_REAL_CURSOR_Y (c) == row)
    return;

  CONSOLE_TTY_REAL_CURSOR_X (c) = col;
  CONSOLE_TTY_REAL_CURSOR_Y (c) = row;

  /* #### Need to reimplement cost analysis and potential relative
     movement. */

  /* If all else fails, use absolute movement. */
  motion = tgoto (TTY_CM (c).abs, col, row);
  tputs (motion, 1, cmputc);
  CONSOLE_TTY_CURSOR_X (c) = col;
  CONSOLE_TTY_CURSOR_Y (c) = row;
}

void
cmgoto (struct frame *f, int row, int col)
{
  /* We delay cursor motion until we do something other than cursor motion,
     to optimize the case where cmgoto() is called twice in a row. */
  struct console *c = XCONSOLE (FRAME_CONSOLE (f));
  CONSOLE_TTY_CURSOR_X (c) = col;
  CONSOLE_TTY_CURSOR_Y (c) = row;
}

#if 0
/* Clear out all terminal info.
   Used before copying into it the info on the actual terminal.
 */

void
Wcm_clear (void)
{
  xzero (Wcm);
  UP = 0;
  BC = 0;
}
#endif

#if 0
/*
 * Initialized stuff
 * Return 0 if can do CM.
 * Return -1 if cannot.
 * Return -2 if size not specified.
 */

int
Wcm_init (void)
{
#if 0
  if (Wcm.cm_abs && !Wcm.cm_ds)
    return 0;
#endif
  if (Wcm.cm_abs)
    return 0;
  /* Require up and left, and, if no absolute, down and right */
  if (!Wcm.cm_up || !Wcm.cm_left)
    return - 1;
  if (!Wcm.cm_abs && (!Wcm.cm_down || !Wcm.cm_right))
    return - 1;
  /* Check that we know the size of the frame.... */
  if (Wcm.cm_rows <= 0 || Wcm.cm_cols <= 0)
    return - 2;
  return 0;
}
#endif