Mercurial > hg > xemacs-beta
view src/objects-msw-impl.h @ 4407:4ee73bbe4f8e
Always use boyer_moore in ASCII or Latin-1 buffers with ASCII search strings.
2007-12-26 Aidan Kehoe <kehoea@parhasard.net>
* casetab.c:
Extend and correct some case table documentation.
* search.c (search_buffer):
Correct a bug where only the first entry for a character in the
case equivalence table was examined in determining if the
Boyer-Moore search algorithm is appropriate.
If there are case mappings outside of the charset and row of the
characters specified in the search string, those case mappings can
be safely ignored (and Boyer-Moore search can be used) if we know
from the buffer statistics that the corresponding characters cannot
occur.
* search.c (boyer_moore):
Assert that we haven't been passed a string with varying
characters sets or rows within character sets. That's what
simple_search is for.
In the very rare event that a character in the search string has a
canonical case mapping that is not in the same character set and
row, don't try to search for the canonical character, search for
some other character that is in the the desired character set and
row. Assert that the case table isn't corrupt.
Do not search for any character case mappings that cannot possibly
occur in the buffer, given the buffer metadata about its
contents.
| author | Aidan Kehoe <kehoea@parhasard.net> |
|---|---|
| date | Wed, 26 Dec 2007 17:30:16 +0100 |
| parents | 79c6ff3eef26 |
| children |
line wrap: on
line source
/* mswindows-specific Lisp objects -- header implementation. Copyright (C) 1993, 1994 Free Software Foundation, Inc. Copyright (C) 1995 Board of Trustees, University of Illinois. Copyright (C) 1995, 1996, 2002 Ben Wing. Copyright (C) 1997, Jonathan Harris. 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: Not in FSF. */ /* Authorship: Ultimately based on FSF. Rewritten by Ben Wing. Rewritten for mswindows by Jonathan Harris, November 1997 for 21.0. */ #ifndef INCLUDED_objects_msw_impl_h_ #define INCLUDED_objects_msw_impl_h_ #include "objects-impl.h" #include "objects-msw.h" struct mswindows_color_instance_data { COLORREF color; }; #define MSWINDOWS_COLOR_INSTANCE_DATA(c) \ ((struct mswindows_color_instance_data *) (c)->data) #define COLOR_INSTANCE_MSWINDOWS_COLOR(c) \ (MSWINDOWS_COLOR_INSTANCE_DATA (c)->color) /* The four HFONTS are for the 4 (underlined, strikethrough) combinations. Only the one at index 0, neither underlined nor struk through is created with the font instance. Other fonts are created as necessary during redisplay, using the one at index 0 as prototype */ #define MSWINDOWS_NUM_FONT_VARIANTS 4 struct mswindows_font_instance_data { HFONT hfont [MSWINDOWS_NUM_FONT_VARIANTS]; }; #define MSWINDOWS_FONT_INSTANCE_DATA(c) \ ((struct mswindows_font_instance_data *) (c)->data) #define FONT_INSTANCE_MSWINDOWS_HFONT_I(c,i) \ (MSWINDOWS_FONT_INSTANCE_DATA(c)->hfont[(i)]) #define FONT_INSTANCE_MSWINDOWS_HFONT_VARIANT(c,under,strike) \ FONT_INSTANCE_MSWINDOWS_HFONT_I (c, (!!(strike)<<1)|!!(under)) /* If font creation during redisplay fails, then the following value is used to prevent future attempts to create this font. Redisplay uses the "main" font when encounters this value */ #define MSWINDOWS_BAD_HFONT ((HFONT)INVALID_HANDLE_VALUE) #endif /* INCLUDED_objects_msw_impl_h_ */