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Diffstat (limited to 'source/luametatex/source/libraries/hnj/hnjhyphen.h')
| -rw-r--r-- | source/luametatex/source/libraries/hnj/hnjhyphen.h | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/source/luametatex/source/libraries/hnj/hnjhyphen.h b/source/luametatex/source/libraries/hnj/hnjhyphen.h new file mode 100644 index 000000000..1f176f3e9 --- /dev/null +++ b/source/luametatex/source/libraries/hnj/hnjhyphen.h @@ -0,0 +1,123 @@ +/* + See license.txt in the root of this project. +*/ + +/* + + The code is derived from LibHnj which is is dual licensed under LGPL and MPL. Boilerplate for + both licenses follows. + +*/ + +/* + + LibHnj - a library for high quality hyphenation and justification + + Copyright (C) 1998 Raph Levien, (C) 2001 ALTLinux, Moscow + + This library is free software; you can redistribute it and/or modify it under the terms of the + GNU Library General Public License as published by the Free Software Foundation; either version + 2 of the License, or (at your option) any later version. + + This library 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 Library General Public License for more details. + + You should have received a copy of the GNU Library General Public License along with this + library; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307 USA. + +*/ + +/* + The contents of this file are subject to the Mozilla Public License Version 1.0 (the "MPL"); + you may not use this file except in compliance with the MPL. You may obtain a copy of the MPL + at http://www.mozilla.org/MPL/ + + Software distributed under the MPL is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY + KIND, either express or implied. See the MPL for the specific language governing rights and + limitations under the MPL. + + */ + +# ifndef LMT_HNJHYPHEN_H +# define LMT_HNJHYPHEN_H + +/*tex + + First some type definitions and a little bit of a hash table implementation. This simply maps + strings to state numbers. In \LUATEX\ we have node related code in |hnjhyphen.c| but in + \LUAMETATEX\ we moved that to |texlanguage.c| so we need to make some type definitions public. + +*/ + +# define HNJ_MAXPATHS 40960 +# define HNJ_HASH_SIZE 31627 +# define HNJ_MAX_CHARS 256 +# define HNJ_MAX_NAME 24 + +typedef struct _hjn_hashtable hjn_hashtable; +typedef struct _hjn_hashentry hjn_hashentry; +typedef struct _hjn_hashiterator hjn_hashiterator; +typedef union _hjn_hashvalue hjn_hashvalue; + +/*tex A cheap, but effective, hack. */ + +struct _hjn_hashtable { + hjn_hashentry *entries[HNJ_HASH_SIZE]; +}; + +union _hjn_hashvalue { + char *hyppat; + int state; + int padding; +}; + +struct _hjn_hashentry { + hjn_hashentry *next; + unsigned char *key; + hjn_hashvalue u; +}; + +struct _hjn_hashiterator { + hjn_hashentry **e; + hjn_hashentry *cur; + int ndx; + int padding; +}; + +/*tex The state state machine. */ + +typedef struct _hjn_transition hjn_transition; +typedef struct _hjn_state hjn_state; +typedef struct _hjn_dictionary hjn_dictionary; + +struct _hjn_transition { + int uni_ch; + int new_state; +}; + +struct _hjn_state { + char *match; + int fallback_state; + int num_trans; + hjn_transition *trans; +}; + +struct _hjn_dictionary { + int num_states; + int pat_length; + char cset[HNJ_MAX_NAME]; + hjn_state *states; + hjn_hashtable *patterns; + hjn_hashtable *merged; + hjn_hashtable *state_num; +}; + +extern hjn_dictionary *hnj_dictionary_new (void); +extern void hnj_dictionary_load (hjn_dictionary *dict, const unsigned char *fn, int trace); +extern void hnj_dictionary_free (hjn_dictionary *dict); +extern void hnj_dictionary_clear (hjn_dictionary *dict); +extern unsigned char *hnj_dictionary_tostring (hjn_dictionary *dict); + +# endif |