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/* vi:set ts=8 sts=4 sw=4 noet:
*
* VIM - Vi IMproved by Bram Moolenaar
*
* Do ":help uganda" in Vim to read copying and usage conditions.
* Do ":help credits" in Vim to see a list of people who contributed.
* See README.txt for an overview of the Vim source code.
*/
/*
* spell.h: common code for spell checking, used by spell.c and spellfile.c.
*/
/* Use SPELL_PRINTTREE for debugging: dump the word tree after adding a word.
* Only use it for small word lists! */
#if 0
# define SPELL_PRINTTREE
#endif
/* Use SPELL_COMPRESS_ALLWAYS for debugging: compress the word tree after
* adding a word. Only use it for small word lists! */
#if 0
# define SPELL_COMPRESS_ALLWAYS
#endif
/* Use DEBUG_TRIEWALK to print the changes made in suggest_trie_walk() for a
* specific word. */
#if 0
# define DEBUG_TRIEWALK
#endif
#define MAXWLEN 254 /* Assume max. word len is this many bytes.
Some places assume a word length fits in a
byte, thus it can't be above 255.
Must be >= PFD_NOTSPECIAL. */
#define MAXREGIONS 8 /* Number of regions supported. */
/* Type used for indexes in the word tree need to be at least 4 bytes. If int
* is 8 bytes we could use something smaller, but what? */
typedef int idx_T;
typedef int salfirst_T;
/*
* Structure used to store words and other info for one language, loaded from
* a .spl file.
* The main access is through the tree in "sl_fbyts/sl_fidxs", storing the
* case-folded words. "sl_kbyts/sl_kidxs" is for keep-case words.
*
* The "byts" array stores the possible bytes in each tree node, preceded by
* the number of possible bytes, sorted on byte value:
* <len> <byte1> <byte2> ...
* The "idxs" array stores the index of the child node corresponding to the
* byte in "byts".
* Exception: when the byte is zero, the word may end here and "idxs" holds
* the flags, region mask and affixID for the word. There may be several
* zeros in sequence for alternative flag/region/affixID combinations.
*/
typedef struct slang_S slang_T;
struct slang_S
{
slang_T *sl_next; /* next language */
char_u *sl_name; /* language name "en", "en.rare", "nl", etc. */
char_u *sl_fname; /* name of .spl file */
int sl_add; /* TRUE if it's a .add file. */
char_u *sl_fbyts; /* case-folded word bytes */
idx_T *sl_fidxs; /* case-folded word indexes */
char_u *sl_kbyts; /* keep-case word bytes */
idx_T *sl_kidxs; /* keep-case word indexes */
char_u *sl_pbyts; /* prefix tree word bytes */
idx_T *sl_pidxs; /* prefix tree word indexes */
char_u *sl_info; /* infotext string or NULL */
char_u sl_regions[MAXREGIONS * 2 + 1];
/* table with up to 8 region names plus NUL */
char_u *sl_midword; /* MIDWORD string or NULL */
hashtab_T sl_wordcount; /* hashtable with word count, wordcount_T */
int sl_compmax; /* COMPOUNDWORDMAX (default: MAXWLEN) */
int sl_compminlen; /* COMPOUNDMIN (default: 0) */
int sl_compsylmax; /* COMPOUNDSYLMAX (default: MAXWLEN) */
int sl_compoptions; /* COMP_* flags */
garray_T sl_comppat; /* CHECKCOMPOUNDPATTERN items */
regprog_T *sl_compprog; /* COMPOUNDRULE turned into a regexp progrm
* (NULL when no compounding) */
char_u *sl_comprules; /* all COMPOUNDRULE concatenated (or NULL) */
char_u *sl_compstartflags; /* flags for first compound word */
char_u *sl_compallflags; /* all flags for compound words */
char_u sl_nobreak; /* When TRUE: no spaces between words */
char_u *sl_syllable; /* SYLLABLE repeatable chars or NULL */
garray_T sl_syl_items; /* syllable items */
int sl_prefixcnt; /* number of items in "sl_prefprog" */
regprog_T **sl_prefprog; /* table with regprogs for prefixes */
garray_T sl_rep; /* list of fromto_T entries from REP lines */
short sl_rep_first[256]; /* indexes where byte first appears, -1 if
there is none */
garray_T sl_sal; /* list of salitem_T entries from SAL lines */
salfirst_T sl_sal_first[256]; /* indexes where byte first appears, -1 if
there is none */
int sl_followup; /* SAL followup */
int sl_collapse; /* SAL collapse_result */
int sl_rem_accents; /* SAL remove_accents */
int sl_sofo; /* SOFOFROM and SOFOTO instead of SAL items:
* "sl_sal_first" maps chars, when has_mbyte
* "sl_sal" is a list of wide char lists. */
garray_T sl_repsal; /* list of fromto_T entries from REPSAL lines */
short sl_repsal_first[256]; /* sl_rep_first for REPSAL lines */
int sl_nosplitsugs; /* don't suggest splitting a word */
int sl_nocompoundsugs; /* don't suggest compounding */
/* Info from the .sug file. Loaded on demand. */
time_t sl_sugtime; /* timestamp for .sug file */
char_u *sl_sbyts; /* soundfolded word bytes */
idx_T *sl_sidxs; /* soundfolded word indexes */
buf_T *sl_sugbuf; /* buffer with word number table */
int sl_sugloaded; /* TRUE when .sug file was loaded or failed to
load */
int sl_has_map; /* TRUE if there is a MAP line */
hashtab_T sl_map_hash; /* MAP for multi-byte chars */
int sl_map_array[256]; /* MAP for first 256 chars */
hashtab_T sl_sounddone; /* table with soundfolded words that have
handled, see add_sound_suggest() */
};
#ifdef VMS
# define SPL_FNAME_TMPL "%s_%s.spl"
# define SPL_FNAME_ADD "_add."
# define SPL_FNAME_ASCII "_ascii."
#else
# define SPL_FNAME_TMPL "%s.%s.spl"
# define SPL_FNAME_ADD ".add."
# define SPL_FNAME_ASCII ".ascii."
#endif
/* Flags used for a word. Only the lowest byte can be used, the region byte
* comes above it. */
#define WF_REGION 0x01 /* region byte follows */
#define WF_ONECAP 0x02 /* word with one capital (or all capitals) */
#define WF_ALLCAP 0x04 /* word must be all capitals */
#define WF_RARE 0x08 /* rare word */
#define WF_BANNED 0x10 /* bad word */
#define WF_AFX 0x20 /* affix ID follows */
#define WF_FIXCAP 0x40 /* keep-case word, allcap not allowed */
#define WF_KEEPCAP 0x80 /* keep-case word */
/* for <flags2>, shifted up one byte to be used in wn_flags */
#define WF_HAS_AFF 0x0100 /* word includes affix */
#define WF_NEEDCOMP 0x0200 /* word only valid in compound */
#define WF_NOSUGGEST 0x0400 /* word not to be suggested */
#define WF_COMPROOT 0x0800 /* already compounded word, COMPOUNDROOT */
#define WF_NOCOMPBEF 0x1000 /* no compounding before this word */
#define WF_NOCOMPAFT 0x2000 /* no compounding after this word */
/* flags for <pflags> */
#define WFP_RARE 0x01 /* rare prefix */
#define WFP_NC 0x02 /* prefix is not combining */
#define WFP_UP 0x04 /* to-upper prefix */
#define WFP_COMPPERMIT 0x08 /* prefix with COMPOUNDPERMITFLAG */
#define WFP_COMPFORBID 0x10 /* prefix with COMPOUNDFORBIDFLAG */
/* Flags for postponed prefixes in "sl_pidxs". Must be above affixID (one
* byte) and prefcondnr (two bytes). */
#define WF_RAREPFX (WFP_RARE << 24) /* rare postponed prefix */
#define WF_PFX_NC (WFP_NC << 24) /* non-combining postponed prefix */
#define WF_PFX_UP (WFP_UP << 24) /* to-upper postponed prefix */
#define WF_PFX_COMPPERMIT (WFP_COMPPERMIT << 24) /* postponed prefix with
* COMPOUNDPERMITFLAG */
#define WF_PFX_COMPFORBID (WFP_COMPFORBID << 24) /* postponed prefix with
* COMPOUNDFORBIDFLAG */
/* flags for <compoptions> */
#define COMP_CHECKDUP 1 /* CHECKCOMPOUNDDUP */
#define COMP_CHECKREP 2 /* CHECKCOMPOUNDREP */
#define COMP_CHECKCASE 4 /* CHECKCOMPOUNDCASE */
#define COMP_CHECKTRIPLE 8 /* CHECKCOMPOUNDTRIPLE */
/* Info from "REP", "REPSAL" and "SAL" entries in ".aff" file used in si_rep,
* si_repsal, sl_rep, and si_sal. Not for sl_sal!
* One replacement: from "ft_from" to "ft_to". */
typedef struct fromto_S
{
char_u *ft_from;
char_u *ft_to;
} fromto_T;
/* Info from "SAL" entries in ".aff" file used in sl_sal.
* The info is split for quick processing by spell_soundfold().
* Note that "sm_oneof" and "sm_rules" point into sm_lead. */
typedef struct salitem_S
{
char_u *sm_lead; /* leading letters */
int sm_leadlen; /* length of "sm_lead" */
char_u *sm_oneof; /* letters from () or NULL */
char_u *sm_rules; /* rules like ^, $, priority */
char_u *sm_to; /* replacement. */
int *sm_lead_w; /* wide character copy of "sm_lead" */
int *sm_oneof_w; /* wide character copy of "sm_oneof" */
int *sm_to_w; /* wide character copy of "sm_to" */
} salitem_T;
/* Values for SP_*ERROR are negative, positive values are used by
* read_cnt_string(). */
#define SP_TRUNCERROR -1 /* spell file truncated error */
#define SP_FORMERROR -2 /* format error in spell file */
#define SP_OTHERERROR -3 /* other error while reading spell file */
/*
* Structure used in "b_langp", filled from 'spelllang'.
*/
typedef struct langp_S
{
slang_T *lp_slang; /* info for this language */
slang_T *lp_sallang; /* language used for sound folding or NULL */
slang_T *lp_replang; /* language used for REP items or NULL */
int lp_region; /* bitmask for region or REGION_ALL */
} langp_T;
#define LANGP_ENTRY(ga, i) (((langp_T *)(ga).ga_data) + (i))
#define VIMSUGMAGIC "VIMsug" /* string at start of Vim .sug file */
#define VIMSUGMAGICL 6
#define VIMSUGVERSION 1
/*
* The tables used for recognizing word characters according to spelling.
* These are only used for the first 256 characters of 'encoding'.
*/
typedef struct spelltab_S
{
char_u st_isw[256]; /* flags: is word char */
char_u st_isu[256]; /* flags: is uppercase char */
char_u st_fold[256]; /* chars: folded case */
char_u st_upper[256]; /* chars: upper case */
} spelltab_T;
/*
* Use our own character-case definitions, because the current locale may
* differ from what the .spl file uses.
* These must not be called with negative number!
*/
#if defined(HAVE_WCHAR_H)
# include <wchar.h> /* for towupper() and towlower() */
#endif
/* Multi-byte implementation. For Unicode we can call utf_*(), but don't do
* that for ASCII, because we don't want to use 'casemap' here. Otherwise use
* the "w" library function for characters above 255 if available. */
#ifdef HAVE_TOWLOWER
# define SPELL_TOFOLD(c) (enc_utf8 && (c) >= 128 ? utf_fold(c) \
: (c) < 256 ? (int)spelltab.st_fold[c] : (int)towlower(c))
#else
# define SPELL_TOFOLD(c) (enc_utf8 && (c) >= 128 ? utf_fold(c) \
: (c) < 256 ? (int)spelltab.st_fold[c] : (c))
#endif
#ifdef HAVE_TOWUPPER
# define SPELL_TOUPPER(c) (enc_utf8 && (c) >= 128 ? utf_toupper(c) \
: (c) < 256 ? (int)spelltab.st_upper[c] : (int)towupper(c))
#else
# define SPELL_TOUPPER(c) (enc_utf8 && (c) >= 128 ? utf_toupper(c) \
: (c) < 256 ? (int)spelltab.st_upper[c] : (c))
#endif
#ifdef HAVE_ISWUPPER
# define SPELL_ISUPPER(c) (enc_utf8 && (c) >= 128 ? utf_isupper(c) \
: (c) < 256 ? spelltab.st_isu[c] : iswupper(c))
#else
# define SPELL_ISUPPER(c) (enc_utf8 && (c) >= 128 ? utf_isupper(c) \
: (c) < 256 ? spelltab.st_isu[c] : (FALSE))
#endif
#ifdef FEAT_SPELL
/* First language that is loaded, start of the linked list of loaded
* languages. */
# ifdef IN_SPELL_C
# define SPELL_EXTERN
# define SPELL_INIT(x) x
# else
# define SPELL_EXTERN extern
# define SPELL_INIT(x)
# endif
SPELL_EXTERN slang_T *first_lang SPELL_INIT(= NULL);
/* file used for "zG" and "zW" */
SPELL_EXTERN char_u *int_wordlist SPELL_INIT(= NULL);
SPELL_EXTERN char e_format[] SPELL_INIT(= N_("E759: Format error in spell file"));
SPELL_EXTERN spelltab_T spelltab;
SPELL_EXTERN int did_set_spelltab;
#endif
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