Annotation of src/usr.bin/tmux/utf8.c, Revision 1.1
1.1 ! nicm 1: /* $OpenBSD$ */
! 2:
! 3: /*
! 4: * Copyright (c) 2008 Nicholas Marriott <nicm@users.sourceforge.net>
! 5: *
! 6: * Permission to use, copy, modify, and distribute this software for any
! 7: * purpose with or without fee is hereby granted, provided that the above
! 8: * copyright notice and this permission notice appear in all copies.
! 9: *
! 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
! 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
! 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
! 13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
! 14: * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
! 15: * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
! 16: * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
! 17: */
! 18:
! 19: #include <sys/types.h>
! 20:
! 21: #include <string.h>
! 22:
! 23: #include "tmux.h"
! 24:
! 25: struct utf8_width_entry {
! 26: u_int first;
! 27: u_int last;
! 28:
! 29: int width;
! 30:
! 31: struct utf8_width_entry *left;
! 32: struct utf8_width_entry *right;
! 33: };
! 34:
! 35: /* Random order. Not optimal but it'll do for now... */
! 36: struct utf8_width_entry utf8_width_table[] = {
! 37: { 0x00951, 0x00954, 0, NULL, NULL },
! 38: { 0x00ccc, 0x00ccd, 0, NULL, NULL },
! 39: { 0x0fff9, 0x0fffb, 0, NULL, NULL },
! 40: { 0x20000, 0x2fffd, 2, NULL, NULL },
! 41: { 0x00ebb, 0x00ebc, 0, NULL, NULL },
! 42: { 0x01932, 0x01932, 0, NULL, NULL },
! 43: { 0x0070f, 0x0070f, 0, NULL, NULL },
! 44: { 0x00a70, 0x00a71, 0, NULL, NULL },
! 45: { 0x02329, 0x02329, 2, NULL, NULL },
! 46: { 0x00acd, 0x00acd, 0, NULL, NULL },
! 47: { 0x00ac7, 0x00ac8, 0, NULL, NULL },
! 48: { 0x00a3c, 0x00a3c, 0, NULL, NULL },
! 49: { 0x009cd, 0x009cd, 0, NULL, NULL },
! 50: { 0x00591, 0x005bd, 0, NULL, NULL },
! 51: { 0x01058, 0x01059, 0, NULL, NULL },
! 52: { 0x0ffe0, 0x0ffe6, 2, NULL, NULL },
! 53: { 0x01100, 0x0115f, 2, NULL, NULL },
! 54: { 0x0fe20, 0x0fe23, 0, NULL, NULL },
! 55: { 0x0302a, 0x0302f, 0, NULL, NULL },
! 56: { 0x01772, 0x01773, 0, NULL, NULL },
! 57: { 0x005bf, 0x005bf, 0, NULL, NULL },
! 58: { 0x006ea, 0x006ed, 0, NULL, NULL },
! 59: { 0x00bc0, 0x00bc0, 0, NULL, NULL },
! 60: { 0x00962, 0x00963, 0, NULL, NULL },
! 61: { 0x01732, 0x01734, 0, NULL, NULL },
! 62: { 0x00d41, 0x00d43, 0, NULL, NULL },
! 63: { 0x01b42, 0x01b42, 0, NULL, NULL },
! 64: { 0x00a41, 0x00a42, 0, NULL, NULL },
! 65: { 0x00eb4, 0x00eb9, 0, NULL, NULL },
! 66: { 0x00b01, 0x00b01, 0, NULL, NULL },
! 67: { 0x00e34, 0x00e3a, 0, NULL, NULL },
! 68: { 0x03040, 0x03098, 2, NULL, NULL },
! 69: { 0x0093c, 0x0093c, 0, NULL, NULL },
! 70: { 0x00c4a, 0x00c4d, 0, NULL, NULL },
! 71: { 0x01032, 0x01032, 0, NULL, NULL },
! 72: { 0x00f37, 0x00f37, 0, NULL, NULL },
! 73: { 0x00901, 0x00902, 0, NULL, NULL },
! 74: { 0x00cbf, 0x00cbf, 0, NULL, NULL },
! 75: { 0x0a806, 0x0a806, 0, NULL, NULL },
! 76: { 0x00dd2, 0x00dd4, 0, NULL, NULL },
! 77: { 0x00f71, 0x00f7e, 0, NULL, NULL },
! 78: { 0x01752, 0x01753, 0, NULL, NULL },
! 79: { 0x1d242, 0x1d244, 0, NULL, NULL },
! 80: { 0x005c1, 0x005c2, 0, NULL, NULL },
! 81: { 0x0309b, 0x0a4cf, 2, NULL, NULL },
! 82: { 0xe0100, 0xe01ef, 0, NULL, NULL },
! 83: { 0x017dd, 0x017dd, 0, NULL, NULL },
! 84: { 0x00600, 0x00603, 0, NULL, NULL },
! 85: { 0x009e2, 0x009e3, 0, NULL, NULL },
! 86: { 0x00cc6, 0x00cc6, 0, NULL, NULL },
! 87: { 0x0a80b, 0x0a80b, 0, NULL, NULL },
! 88: { 0x01712, 0x01714, 0, NULL, NULL },
! 89: { 0x00b3c, 0x00b3c, 0, NULL, NULL },
! 90: { 0x01b00, 0x01b03, 0, NULL, NULL },
! 91: { 0x007eb, 0x007f3, 0, NULL, NULL },
! 92: { 0xe0001, 0xe0001, 0, NULL, NULL },
! 93: { 0x1d185, 0x1d18b, 0, NULL, NULL },
! 94: { 0x0feff, 0x0feff, 0, NULL, NULL },
! 95: { 0x01b36, 0x01b3a, 0, NULL, NULL },
! 96: { 0x01920, 0x01922, 0, NULL, NULL },
! 97: { 0x00670, 0x00670, 0, NULL, NULL },
! 98: { 0x00f90, 0x00f97, 0, NULL, NULL },
! 99: { 0x01927, 0x01928, 0, NULL, NULL },
! 100: { 0x0200b, 0x0200f, 0, NULL, NULL },
! 101: { 0x0ff00, 0x0ff60, 2, NULL, NULL },
! 102: { 0x0f900, 0x0faff, 2, NULL, NULL },
! 103: { 0x0fb1e, 0x0fb1e, 0, NULL, NULL },
! 104: { 0x00cbc, 0x00cbc, 0, NULL, NULL },
! 105: { 0x00eb1, 0x00eb1, 0, NULL, NULL },
! 106: { 0x10a38, 0x10a3a, 0, NULL, NULL },
! 107: { 0x007a6, 0x007b0, 0, NULL, NULL },
! 108: { 0x00f80, 0x00f84, 0, NULL, NULL },
! 109: { 0x005c4, 0x005c5, 0, NULL, NULL },
! 110: { 0x0ac00, 0x0d7a3, 2, NULL, NULL },
! 111: { 0x017c9, 0x017d3, 0, NULL, NULL },
! 112: { 0x00d4d, 0x00d4d, 0, NULL, NULL },
! 113: { 0x1d167, 0x1d169, 0, NULL, NULL },
! 114: { 0x01036, 0x01037, 0, NULL, NULL },
! 115: { 0xe0020, 0xe007f, 0, NULL, NULL },
! 116: { 0x00f35, 0x00f35, 0, NULL, NULL },
! 117: { 0x017b4, 0x017b5, 0, NULL, NULL },
! 118: { 0x0206a, 0x0206f, 0, NULL, NULL },
! 119: { 0x00c46, 0x00c48, 0, NULL, NULL },
! 120: { 0x01939, 0x0193b, 0, NULL, NULL },
! 121: { 0x01dc0, 0x01dca, 0, NULL, NULL },
! 122: { 0x10a0c, 0x10a0f, 0, NULL, NULL },
! 123: { 0x0102d, 0x01030, 0, NULL, NULL },
! 124: { 0x017c6, 0x017c6, 0, NULL, NULL },
! 125: { 0x00ec8, 0x00ecd, 0, NULL, NULL },
! 126: { 0x00b41, 0x00b43, 0, NULL, NULL },
! 127: { 0x017b7, 0x017bd, 0, NULL, NULL },
! 128: { 0x1d173, 0x1d182, 0, NULL, NULL },
! 129: { 0x00a47, 0x00a48, 0, NULL, NULL },
! 130: { 0x0232a, 0x0232a, 2, NULL, NULL },
! 131: { 0x01b3c, 0x01b3c, 0, NULL, NULL },
! 132: { 0x10a01, 0x10a03, 0, NULL, NULL },
! 133: { 0x00ae2, 0x00ae3, 0, NULL, NULL },
! 134: { 0x00483, 0x00486, 0, NULL, NULL },
! 135: { 0x0135f, 0x0135f, 0, NULL, NULL },
! 136: { 0x01a17, 0x01a18, 0, NULL, NULL },
! 137: { 0x006e7, 0x006e8, 0, NULL, NULL },
! 138: { 0x03099, 0x0309a, 0, NULL, NULL },
! 139: { 0x00b4d, 0x00b4d, 0, NULL, NULL },
! 140: { 0x00ce2, 0x00ce3, 0, NULL, NULL },
! 141: { 0x00bcd, 0x00bcd, 0, NULL, NULL },
! 142: { 0x00610, 0x00615, 0, NULL, NULL },
! 143: { 0x00f99, 0x00fbc, 0, NULL, NULL },
! 144: { 0x009c1, 0x009c4, 0, NULL, NULL },
! 145: { 0x00730, 0x0074a, 0, NULL, NULL },
! 146: { 0x00300, 0x0036f, 0, NULL, NULL },
! 147: { 0x03030, 0x0303e, 2, NULL, NULL },
! 148: { 0x01b34, 0x01b34, 0, NULL, NULL },
! 149: { 0x1d1aa, 0x1d1ad, 0, NULL, NULL },
! 150: { 0x00dca, 0x00dca, 0, NULL, NULL },
! 151: { 0x006d6, 0x006e4, 0, NULL, NULL },
! 152: { 0x00f86, 0x00f87, 0, NULL, NULL },
! 153: { 0x00b3f, 0x00b3f, 0, NULL, NULL },
! 154: { 0x0fe30, 0x0fe6f, 2, NULL, NULL },
! 155: { 0x01039, 0x01039, 0, NULL, NULL },
! 156: { 0x0094d, 0x0094d, 0, NULL, NULL },
! 157: { 0x00c55, 0x00c56, 0, NULL, NULL },
! 158: { 0x00488, 0x00489, 0, NULL, NULL },
! 159: { 0x00e47, 0x00e4e, 0, NULL, NULL },
! 160: { 0x00a81, 0x00a82, 0, NULL, NULL },
! 161: { 0x00ac1, 0x00ac5, 0, NULL, NULL },
! 162: { 0x0202a, 0x0202e, 0, NULL, NULL },
! 163: { 0x00dd6, 0x00dd6, 0, NULL, NULL },
! 164: { 0x018a9, 0x018a9, 0, NULL, NULL },
! 165: { 0x0064b, 0x0065e, 0, NULL, NULL },
! 166: { 0x00abc, 0x00abc, 0, NULL, NULL },
! 167: { 0x00b82, 0x00b82, 0, NULL, NULL },
! 168: { 0x00f39, 0x00f39, 0, NULL, NULL },
! 169: { 0x020d0, 0x020ef, 0, NULL, NULL },
! 170: { 0x01dfe, 0x01dff, 0, NULL, NULL },
! 171: { 0x30000, 0x3fffd, 2, NULL, NULL },
! 172: { 0x00711, 0x00711, 0, NULL, NULL },
! 173: { 0x0fe00, 0x0fe0f, 0, NULL, NULL },
! 174: { 0x01160, 0x011ff, 0, NULL, NULL },
! 175: { 0x0180b, 0x0180d, 0, NULL, NULL },
! 176: { 0x10a3f, 0x10a3f, 0, NULL, NULL },
! 177: { 0x00981, 0x00981, 0, NULL, NULL },
! 178: { 0x0a825, 0x0a826, 0, NULL, NULL },
! 179: { 0x00941, 0x00948, 0, NULL, NULL },
! 180: { 0x01b6b, 0x01b73, 0, NULL, NULL },
! 181: { 0x00e31, 0x00e31, 0, NULL, NULL },
! 182: { 0x0fe10, 0x0fe19, 2, NULL, NULL },
! 183: { 0x00a01, 0x00a02, 0, NULL, NULL },
! 184: { 0x00a4b, 0x00a4d, 0, NULL, NULL },
! 185: { 0x00f18, 0x00f19, 0, NULL, NULL },
! 186: { 0x00fc6, 0x00fc6, 0, NULL, NULL },
! 187: { 0x02e80, 0x03029, 2, NULL, NULL },
! 188: { 0x00b56, 0x00b56, 0, NULL, NULL },
! 189: { 0x009bc, 0x009bc, 0, NULL, NULL },
! 190: { 0x005c7, 0x005c7, 0, NULL, NULL },
! 191: { 0x02060, 0x02063, 0, NULL, NULL },
! 192: { 0x00c3e, 0x00c40, 0, NULL, NULL },
! 193: { 0x10a05, 0x10a06, 0, NULL, NULL },
! 194: };
! 195:
! 196: struct utf8_width_entry *utf8_width_root = NULL;
! 197:
! 198: int utf8_overlap(struct utf8_width_entry *, struct utf8_width_entry *);
! 199: void utf8_print(struct utf8_width_entry *, int);
! 200: u_int utf8_combine(const u_char *);
! 201: void utf8_split(u_int, u_char *);
! 202:
! 203: int
! 204: utf8_overlap(
! 205: struct utf8_width_entry *item1, struct utf8_width_entry *item2)
! 206: {
! 207: if (item1->first >= item2->first && item1->first <= item2->last)
! 208: return (1);
! 209: if (item1->last >= item2->first && item1->last <= item2->last)
! 210: return (1);
! 211: if (item2->first >= item1->first && item2->first <= item1->last)
! 212: return (1);
! 213: if (item2->last >= item1->first && item2->last <= item1->last)
! 214: return (1);
! 215: return (0);
! 216: }
! 217:
! 218: void
! 219: utf8_build(void)
! 220: {
! 221: struct utf8_width_entry **ptr, *item, *node;
! 222: u_int i, j;
! 223:
! 224: for (i = 0; i < nitems(utf8_width_table); i++) {
! 225: item = &utf8_width_table[i];
! 226:
! 227: for (j = 0; j < nitems(utf8_width_table); j++) {
! 228: if (i != j && utf8_overlap(item, &utf8_width_table[j]))
! 229: log_fatalx("utf8 overlap: %u %u", i, j);
! 230: }
! 231:
! 232: ptr = &utf8_width_root;
! 233: while (*ptr != NULL) {
! 234: node = *ptr;
! 235: if (item->last < node->first)
! 236: ptr = &(node->left);
! 237: else if (item->first > node->last)
! 238: ptr = &(node->right);
! 239: }
! 240: *ptr = item;
! 241: }
! 242: }
! 243:
! 244: void
! 245: utf8_print(struct utf8_width_entry *node, int n)
! 246: {
! 247: log_debug("%*s%04x -> %04x", n, " ", node->first, node->last);
! 248: if (node->left != NULL)
! 249: utf8_print(node->left, n + 1);
! 250: if (node->right != NULL)
! 251: utf8_print(node->right, n + 1);
! 252: }
! 253:
! 254: u_int
! 255: utf8_combine(const u_char *data)
! 256: {
! 257: u_int uvalue;
! 258:
! 259: if (data[1] == 0xff)
! 260: uvalue = data[0];
! 261: else if (data[2] == 0xff) {
! 262: uvalue = data[1] & 0x3f;
! 263: uvalue |= (data[0] & 0x1f) << 6;
! 264: } else if (data[3] == 0xff) {
! 265: uvalue = data[2] & 0x3f;
! 266: uvalue |= (data[1] & 0x3f) << 6;
! 267: uvalue |= (data[0] & 0x0f) << 12;
! 268: } else {
! 269: uvalue = data[3] & 0x3f;
! 270: uvalue |= (data[2] & 0x3f) << 6;
! 271: uvalue |= (data[1] & 0x3f) << 12;
! 272: uvalue |= (data[0] & 0x3f) << 18;
! 273: }
! 274: return (uvalue);
! 275: }
! 276:
! 277: void
! 278: utf8_split(u_int uvalue, u_char *data)
! 279: {
! 280: memset(data, 0xff, 4);
! 281:
! 282: if (uvalue <= 0x7f)
! 283: data[0] = uvalue;
! 284: else if (uvalue > 0x7f && uvalue <= 0x7ff) {
! 285: data[0] = (uvalue >> 6) | 0xc0;
! 286: data[1] = (uvalue & 0x3f) | 0x80;
! 287: } else if (uvalue > 0x7ff && uvalue <= 0xffff) {
! 288: data[0] = (uvalue >> 12) | 0xe0;
! 289: data[1] = ((uvalue >> 6) & 0x3f) | 0x80;
! 290: data[2] = (uvalue & 0x3f) | 0x80;
! 291: } else if (uvalue > 0xffff && uvalue <= 0x10ffff) {
! 292: data[0] = (uvalue >> 18) | 0xf0;
! 293: data[1] = ((uvalue >> 12) & 0x3f) | 0x80;
! 294: data[2] = ((uvalue >> 6) & 0x3f) | 0x80;
! 295: data[3] = (uvalue & 0x3f) | 0x80;
! 296: }
! 297: }
! 298:
! 299: int
! 300: utf8_width(u_char *udata)
! 301: {
! 302: struct utf8_width_entry *item;
! 303: u_int uvalue;
! 304:
! 305: uvalue = utf8_combine(udata);
! 306:
! 307: item = utf8_width_root;
! 308: while (item != NULL) {
! 309: if (uvalue < item->first)
! 310: item = item->left;
! 311: else if (uvalue > item->last)
! 312: item = item->right;
! 313: else
! 314: return (item->width);
! 315: }
! 316: return (1);
! 317: }
![[BACK]](/icons/back.gif){kind=icon}
Return to utf8.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / tmux