diff options
Diffstat (limited to 'nx-X11/programs/xterm/charclass.c')
| -rw-r--r-- | nx-X11/programs/xterm/charclass.c | 142 |
1 files changed, 0 insertions, 142 deletions
diff --git a/nx-X11/programs/xterm/charclass.c b/nx-X11/programs/xterm/charclass.c deleted file mode 100644 index 96220607c..000000000 --- a/nx-X11/programs/xterm/charclass.c +++ /dev/null @@ -1,142 +0,0 @@ -/* $XTermId: charclass.c,v 1.10 2005/01/14 01:50:02 tom Exp $ */ - -/* - * Compact and efficient reimplementation of the - * xterm character class mechanism for large character sets - * - * Markus Kuhn -- mkuhn@acm.org -- 2000-07-03 - * - * Xterm allows users to select entire words with a double-click on - * the left mouse button. Opinions might differ on what type of - * characters are part of separate words, therefore xterm allows users - * to configure a class code for each 8-bit character. Words are - * maximum length sequences of neighboring characters with identical - * class code. Extending this mechanism to Unicode naively would - * create an at least 2^16 entries (128 kB) long class code table. - * Instead, we transform the character class table into a list - * of intervals, that will be accessed via a linear search. - * Changes made to the table by the user will be appended. A special - * class code -1 (default) marks characters who have their code number - * as the class code. We could alternatively use a sorted table of - * non-overlapping intervals that can be accessed via binary search, - * but merging in new intervals is significantly more hassle and - * not worth the effort here. - */ -/* $XFree86: xc/programs/xterm/charclass.c,v 1.5 2005/01/14 01:50:02 dickey Exp $ */ - -#include <xterm.h> -#include <charclass.h> - -#if OPT_WIDE_CHARS - -static struct classentry { - int cclass; - int first; - int last; -} *classtab; - -/* - * Special convention for classtab[0]: - * - classtab[0].cclass is the allocated number of entries in classtab - * - classtab[0].first = 1 (first used entry in classtab) - * - classtab[0].last is the last used entry in classtab - */ - -int -SetCharacterClassRange(int low, int high, int value) -{ - if (high < low) - return -1; /* nothing to do */ - - /* make sure we have at least one free entry left at table end */ - if (classtab[0].last > classtab[0].cclass - 2) { - classtab[0].cclass += 5 + classtab[0].cclass / 4; - classtab = TypeRealloc(struct classentry, classtab[0].cclass, classtab); - if (!classtab) - abort(); - } - - /* simply append new interval to end of interval array */ - classtab[0].last++; - classtab[classtab[0].last].first = low; - classtab[classtab[0].last].last = high; - classtab[classtab[0].last].cclass = value; - - return 0; -} - -void -init_classtab(void) -{ - const int size = 50; - - classtab = TypeMallocN(struct classentry, size); - if (!classtab) - abort(); - classtab[0].cclass = size; - classtab[0].first = 1; - classtab[0].last = 0; - - /* old xterm default classes */ - SetCharacterClassRange(0, 0, 32); - SetCharacterClassRange(1, 31, 1); - SetCharacterClassRange('\t', '\t', 32); - SetCharacterClassRange('0', '9', 48); - SetCharacterClassRange('A', 'Z', 48); - SetCharacterClassRange('_', '_', 48); - SetCharacterClassRange('a', 'z', 48); - SetCharacterClassRange(127, 159, 1); - SetCharacterClassRange(160, 191, -1); - SetCharacterClassRange(192, 255, 48); - SetCharacterClassRange(215, 215, 216); - SetCharacterClassRange(247, 247, 248); - - /* added Unicode classes */ - SetCharacterClassRange(0x0100, 0xffdf, 48); /* mostly characters */ - SetCharacterClassRange(0x037e, 0x037e, -1); /* Greek question mark */ - SetCharacterClassRange(0x0387, 0x0387, -1); /* Greek ano teleia */ - SetCharacterClassRange(0x055a, 0x055f, -1); /* Armenian punctuation */ - SetCharacterClassRange(0x0589, 0x0589, -1); /* Armenian full stop */ - SetCharacterClassRange(0x0700, 0x070d, -1); /* Syriac punctuation */ - SetCharacterClassRange(0x104a, 0x104f, -1); /* Myanmar punctuation */ - SetCharacterClassRange(0x10fb, 0x10fb, -1); /* Georgian punctuation */ - SetCharacterClassRange(0x1361, 0x1368, -1); /* Ethiopic punctuation */ - SetCharacterClassRange(0x166d, 0x166e, -1); /* Canadian Syl. punctuation */ - SetCharacterClassRange(0x17d4, 0x17dc, -1); /* Khmer punctuation */ - SetCharacterClassRange(0x1800, 0x180a, -1); /* Mongolian punctuation */ - SetCharacterClassRange(0x2000, 0x200a, 32); /* spaces */ - SetCharacterClassRange(0x200b, 0x27ff, -1); /* punctuation and symbols */ - SetCharacterClassRange(0x2070, 0x207f, 0x2070); /* superscript */ - SetCharacterClassRange(0x2080, 0x208f, 0x2080); /* subscript */ - SetCharacterClassRange(0x3000, 0x3000, 32); /* ideographic space */ - SetCharacterClassRange(0x3001, 0x3020, -1); /* ideographic punctuation */ - SetCharacterClassRange(0x3040, 0x309f, 0x3040); /* Hiragana */ - SetCharacterClassRange(0x30a0, 0x30ff, 0x30a0); /* Katakana */ - SetCharacterClassRange(0x3300, 0x9fff, 0x4e00); /* CJK Ideographs */ - SetCharacterClassRange(0xac00, 0xd7a3, 0xac00); /* Hangul Syllables */ - SetCharacterClassRange(0xf900, 0xfaff, 0x4e00); /* CJK Ideographs */ - SetCharacterClassRange(0xfe30, 0xfe6b, -1); /* punctuation forms */ - SetCharacterClassRange(0xff00, 0xff0f, -1); /* half/fullwidth ASCII */ - SetCharacterClassRange(0xff1a, 0xff20, -1); /* half/fullwidth ASCII */ - SetCharacterClassRange(0xff3b, 0xff40, -1); /* half/fullwidth ASCII */ - SetCharacterClassRange(0xff5b, 0xff64, -1); /* half/fullwidth ASCII */ - - return; -} - -int -CharacterClass(int c) -{ - int i, cclass = -1; - - for (i = classtab[0].first; i <= classtab[0].last; i++) - if (classtab[i].first <= c && classtab[i].last >= c) - cclass = classtab[i].cclass; - - if (cclass < 0) - cclass = c; - - return cclass; -} - -#endif /* OPT_WIDE_CHARS */ |