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view src/libsst.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 | 183866b06e0b |
children | aa5ed11f473b |
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/* libsst.h - include file for SPARC sound tools library ** ** Copyright (C) 1989 by Jef Poskanzer. ** ** Permission to use, copy, modify, and distribute this software and its ** documentation for any purpose and without fee is hereby granted, provided ** that the above copyright notice appear in all copies and that both that ** copyright notice and this permission notice appear in supporting ** documentation. This software is provided "as is" without express or ** implied warranty. */ /* Synched up with: Not in FSF. */ /* This file Mule-ized by Ben Wing, 5-15-01. */ #ifndef INCLUDED_libsst_h_ #define INCLUDED_libsst_h_ #include <sys/ioctl.h> #ifndef SUNOS4_0_3 #define AUDIO_4_0_3_COMPAT #define AUDIO_CHIP #define AMD_CHIP /* SparcStation 1, 2, IPC, and IPX */ #include <sbusdev/audio_79C30.h> #include <multimedia/libaudio.h> #include <multimedia/audio_device.h> #else #include <sbusdev/audioreg.h> #endif #include <sun/audioio.h> #define SAMPLES_PER_SECOND 8192 int sst_open( ); void sst_close( /* int fd */ ); void sst_set_ger( /* int fd, value */ ); void sst_set_gr( /* int fd, value */ ); void sst_set_gx( /* int fd, value */ ); void sst_tones( /* int fd, dhz1, dhz2, thz, rhz, usec */ ); void sst_dtmf( /* int fd, char *dial, int usecper, usecpause */ ); #endif /* INCLUDED_libsst_h_ */