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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. */
-
-
- /* initialize mapcase array
-
- this array has two jobs: to distingush between "letters" (characters
- that can be parts of words) and to convert upper case to lower case
- when that makes sense. The functions in 'ctype' would be good enough,
- except that now we want to handle international characters */
-
- #include <stdio.h>
- #include <ctype.h>
-
- short mapcase[256];
-
- mapcaseinit ()
- {
- static firsttime = 1;
- int i;
-
- if (firsttime == 0)
- return;
-
- firsttime = 0;
-
- /* map upper case to lower case */
- for (i = 'A'; i <= 'Z'; i++)
- mapcase[i] = i - 'A' + 'a';
-
- /* map lower case to itself */
- for (i = 'a'; i <= 'z'; i++)
- mapcase[i] = i;
-
- /* add other normal ascii characters that should be considered
- * letters here. You might want '-' or '_'
- */
- mapcase['\''] = '\'';
-
- /* map all high bit set characters to themselves - they
- * wont normally appear, and if they do, they probably represent
- * characters with accent marks
- */
- for (i = 0x80; i < 0x100; i++)
- mapcase[i] = i;
-
- /*
- * now map upper case accented characters to
- * lower case equivalents
- */
- /* IBM-PC */
- mapcase[0x80] = 0x87; /* c cedialla */
- mapcase[0x8e] = 0x84; /* a umlaut */
- mapcase[0x8f] = 0x86; /* a with circle */
- mapcase[0x90] = 0x82; /* e acute */
- mapcase[0x92] = 0x91; /* ae ligaturrre */
- mapcase[0x99] = 0x94; /* o umlaut */
- mapcase[0x9a] = 0x81; /* u umlaut */
- mapcase[0xa5] = 0xa4; /* n tilde */
- }
-