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- /* Copyright (C) 1990, 1993 Free Software Foundation, Inc.
-
- This file is part of GNU ISPELL.
-
- This program 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.
-
- This program 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 this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- #include <stdio.h>
- #include <ctype.h>
- #include <setjmp.h>
- #include "ispell.h"
- #include "hash.h"
- #include "good.h"
-
- extern int intr_typed;
-
- char newword[MAX_WORD_LEN];
-
- jmp_buf genjmp;
-
- #ifdef __STDC__
-
- void wrongletter (char *);
- void extraletter (char *);
- void missingletter (char *);
- void transposedletter (char *);
-
- #else
-
- void wrongletter ();
- void extraletter ();
- void missingletter ();
- void transposedletter ();
-
- #endif
-
- struct sp_corrections corrections;
-
- int
- makepossibilities (word)
- char *word;
- {
- int i;
- char uword[MAX_WORD_LEN];
-
- corrections.nwords = 0;
-
- if (strlen (word) > MAX_WORD_LEN - 5)
- return (0);
-
- downcase (uword, word);
-
- if (setjmp (genjmp))
- goto done;
-
- for (i = 0; i < MAXPOS; i++)
- corrections.posbuf[i][0] = 0;
-
- wrongletter (uword);
- extraletter (uword);
- missingletter (uword);
- transposedletter (uword);
-
- done:;
- fixcase (word, &corrections);
- if (intr_typed)
- return (1);
-
- return (0);
- }
-
- void
- insert (word)
- char *word;
- {
- int i, n;
-
- n = corrections.nwords;
- for (i = 0; i < n; i++)
- if (strcmp (corrections.posbuf[i], word) == 0)
- return;
-
- (void) strcpy (corrections.posbuf[n++], word);
-
- corrections.nwords = n;
-
- if (n >= 10)
- longjmp (genjmp, 1);
- }
-
- void
- wrongletter (word)
- char *word;
- {
- int i, len;
- int j;
-
- if (intr_typed)
- return;
-
- len = strlen (word);
- (void) strcpy (newword, word);
-
- for (i = 0; i < len; i++)
- {
- if (intr_typed)
- return;
- for (j = 0; j < nnear_miss_letters; j++)
- {
- newword[i] = near_miss_letters[j];
- if (good (newword, len, 1))
- insert (newword);
- }
- newword[i] = word[i];
- }
- }
-
- void
- extraletter (word)
- char *word;
- {
- char *p, *s, *t;
- int len;
-
- if (intr_typed)
- return;
-
- len = strlen (word);
-
- if (len <= 2)
- return;
-
- for (p = word; *p; p++)
- {
- if (intr_typed)
- return;
- for (s = word, t = newword; *s; s++)
- if (s != p)
- *t++ = *s;
- *t = 0;
- if (good (newword, len - 1, 1))
- insert (newword);
- }
- }
-
- void
- missingletter (word)
- char *word;
- {
- char *p, *r, *s, *t;
- int len;
- int i;
-
- if (intr_typed)
- return;
-
- len = strlen (word);
-
- for (p = word; p == word || p[-1]; p++)
- {
- if (intr_typed)
- return;
- for (s = newword, t = word; t != p; s++, t++)
- *s = *t;
- r = s++;
- while (*t)
- *s++ = *t++;
- *s = 0;
-
- for (i = 0; i < nnear_miss_letters; i++)
- {
- *r = near_miss_letters[i];
- if (good (newword, len + 1, 1))
- insert (newword);
- }
- }
- }
-
- void
- transposedletter (word)
- char *word;
- {
- char t;
- char *p;
- int len;
-
- if (intr_typed)
- return;
-
- len = strlen (word);
-
- (void) strcpy (newword, word);
- for (p = newword; p[1]; p++)
- {
- if (intr_typed)
- return;
- t = p[0];
- p[0] = p[1];
- p[1] = t;
- if (good (newword, len, 1))
- insert (newword);
- t = p[0];
- p[0] = p[1];
- p[1] = t;
- }
- }
-