Mercurial > hg > octave-lyh > gnulib-hg
changeset 9056:a6642d9cdf84
New module 'uniwidth/width'.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Sat, 07 Jul 2007 16:16:53 +0000 |
parents | 4abfac11855b |
children | cbe701eb56ac |
files | ChangeLog lib/uniwidth/cjk.h lib/uniwidth/width.c modules/uniwidth/width |
diffstat | 4 files changed, 329 insertions(+), 0 deletions(-) [+] |
line wrap: on
line diff
--- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,9 @@ 2007-07-07 Bruno Haible <bruno@clisp.org> + * lib/uniwidth/width.c: New file, from GNU libiconv. + * lib/uniwidth/cjk.h: New file, from GNU libiconv. + * modules/uniwidth/width: New file. + * lib/uniwidth.h: New file, from GNU libiconv. * modules/uniwidth/base: New file.
new file mode 100644 --- /dev/null +++ b/lib/uniwidth/cjk.h @@ -0,0 +1,39 @@ +/* Test for CJK encoding. + Copyright (C) 2001-2002, 2005-2007 Free Software Foundation, Inc. + Written by Bruno Haible <bruno@clisp.org>, 2002. + + This program is free software; you can redistribute it and/or modify it + under the terms of the GNU Library 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with this program; if not, write to the Free Software + Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, + USA. */ + +#include "streq.h" + +static int +is_cjk_encoding (const char *encoding) +{ + if (0 + /* Legacy Japanese encodings */ + || STREQ (encoding, "EUC-JP", 'E', 'U', 'C', '-', 'J', 'P', 0, 0, 0) + /* Legacy Chinese encodings */ + || STREQ (encoding, "GB2312", 'G', 'B', '2', '3', '1', '2', 0, 0, 0) + || STREQ (encoding, "GBK", 'G', 'B', 'K', 0, 0, 0, 0, 0, 0) + || STREQ (encoding, "EUC-TW", 'E', 'U', 'C', '-', 'T', 'W', 0, 0, 0) + || STREQ (encoding, "BIG5", 'B', 'I', 'G', '5', 0, 0, 0, 0, 0) + /* Legacy Korean encodings */ + || STREQ (encoding, "EUC-KR", 'E', 'U', 'C', '-', 'K', 'R', 0, 0, 0) + || STREQ (encoding, "CP949", 'C', 'P', '9', '4', '9', 0, 0, 0, 0) + || STREQ (encoding, "JOHAB", 'J', 'O', 'H', 'A', 'B', 0, 0, 0, 0)) + return 1; + return 0; +}
new file mode 100644 --- /dev/null +++ b/lib/uniwidth/width.c @@ -0,0 +1,261 @@ +/* Determine display width of Unicode character. + Copyright (C) 2001-2002, 2006 Free Software Foundation, Inc. + Written by Bruno Haible <bruno@clisp.org>, 2002. + + This program is free software; you can redistribute it and/or modify it + under the terms of the GNU Library 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with this program; if not, write to the Free Software + Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, + USA. */ + +#include <config.h> + +/* Specification. */ +#include "uniwidth.h" + +#include "cjk.h" + +/* + * Non-spacing attribute table. + * Consists of: + * - Non-spacing characters; generated from PropList.txt or + * "grep '^[^;]*;[^;]*;[^;]*;[^;]*;NSM;' UnicodeData.txt" + * - Format control characters; generated from + * "grep '^[^;]*;[^;]*;Cf;' UnicodeData.txt" + * - Zero width characters; generated from + * "grep '^[^;]*;ZERO WIDTH ' UnicodeData.txt" + */ +static const unsigned char nonspacing_table_data[16*64] = { + /* 0x0000-0x01ff */ + 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, /* 0x0000-0x003f */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, /* 0x0040-0x007f */ + 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, /* 0x0080-0x00bf */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x00c0-0x00ff */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0100-0x013f */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0140-0x017f */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0180-0x01bf */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x01c0-0x01ff */ + /* 0x0200-0x03ff */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0200-0x023f */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0240-0x027f */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0280-0x02bf */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x02c0-0x02ff */ + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 0x0300-0x033f */ + 0xff, 0xff, 0x00, 0x00, 0xff, 0xff, 0x00, 0x00, /* 0x0340-0x037f */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0380-0x03bf */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x03c0-0x03ff */ + /* 0x0400-0x05ff */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0400-0x043f */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0440-0x047f */ + 0x78, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0480-0x04bf */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x04c0-0x04ff */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0500-0x053f */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0540-0x057f */ + 0x00, 0x00, 0xfe, 0xff, 0xfb, 0xff, 0xff, 0xbb, /* 0x0580-0x05bf */ + 0x16, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x05c0-0x05ff */ + /* 0x0600-0x07ff */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0600-0x063f */ + 0x00, 0xf8, 0x3f, 0x00, 0x00, 0x00, 0x01, 0x00, /* 0x0640-0x067f */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0680-0x06bf */ + 0x00, 0x00, 0xc0, 0xff, 0x9f, 0x3d, 0x00, 0x00, /* 0x06c0-0x06ff */ + 0x00, 0x80, 0x02, 0x00, 0x00, 0x00, 0xff, 0xff, /* 0x0700-0x073f */ + 0xff, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0740-0x077f */ + 0x00, 0x00, 0x00, 0x00, 0xc0, 0xff, 0x01, 0x00, /* 0x0780-0x07bf */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x07c0-0x07ff */ + /* 0x0800-0x09ff */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0800-0x083f */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0840-0x087f */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0880-0x08bf */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x08c0-0x08ff */ + 0x06, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, /* 0x0900-0x093f */ + 0xfe, 0x21, 0x1e, 0x00, 0x0c, 0x00, 0x00, 0x00, /* 0x0940-0x097f */ + 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, /* 0x0980-0x09bf */ + 0x1e, 0x20, 0x00, 0x00, 0x0c, 0x00, 0x00, 0x00, /* 0x09c0-0x09ff */ + /* 0x0a00-0x0bff */ + 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, /* 0x0a00-0x0a3f */ + 0x86, 0x39, 0x00, 0x00, 0x00, 0x00, 0x03, 0x00, /* 0x0a40-0x0a7f */ + 0x06, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, /* 0x0a80-0x0abf */ + 0xbe, 0x21, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0ac0-0x0aff */ + 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x90, /* 0x0b00-0x0b3f */ + 0x0e, 0x20, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0b40-0x0b7f */ + 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0b80-0x0bbf */ + 0x01, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0bc0-0x0bff */ + /* 0x0c00-0x0dff */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xc0, /* 0x0c00-0x0c3f */ + 0xc1, 0x3d, 0x60, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0c40-0x0c7f */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, /* 0x0c80-0x0cbf */ + 0x40, 0x30, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0cc0-0x0cff */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0d00-0x0d3f */ + 0x0e, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0d40-0x0d7f */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0d80-0x0dbf */ + 0x00, 0x04, 0x5c, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0dc0-0x0dff */ + /* 0x0e00-0x0fff */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xf2, 0x07, /* 0x0e00-0x0e3f */ + 0x80, 0x7f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0e40-0x0e7f */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xf2, 0x1b, /* 0x0e80-0x0ebf */ + 0x00, 0x3f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0ec0-0x0eff */ + 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0xa0, 0x02, /* 0x0f00-0x0f3f */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfe, 0x7f, /* 0x0f40-0x0f7f */ + 0xdf, 0x00, 0xff, 0xfe, 0xff, 0xff, 0xff, 0x1f, /* 0x0f80-0x0fbf */ + 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x0fc0-0x0fff */ + /* 0x1000-0x11ff */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0xe0, 0xc5, 0x02, /* 0x1000-0x103f */ + 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00, /* 0x1040-0x107f */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1080-0x10bf */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x10c0-0x10ff */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1100-0x113f */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1140-0x117f */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1180-0x11bf */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x11c0-0x11ff */ + /* 0x1600-0x17ff */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1600-0x163f */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1640-0x167f */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1680-0x16bf */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x16c0-0x16ff */ + 0x00, 0x00, 0x1c, 0x00, 0x00, 0x00, 0x1c, 0x00, /* 0x1700-0x173f */ + 0x00, 0x00, 0x0c, 0x00, 0x00, 0x00, 0x0c, 0x00, /* 0x1740-0x177f */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x3f, /* 0x1780-0x17bf */ + 0x40, 0xfe, 0x0f, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x17c0-0x17ff */ + /* 0x1800-0x19ff */ + 0x00, 0x78, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1800-0x183f */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1840-0x187f */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, /* 0x1880-0x18bf */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x18c0-0x18ff */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1900-0x193f */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1940-0x197f */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1980-0x19bf */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x19c0-0x19ff */ + /* 0x2000-0x21ff */ + 0x00, 0xf8, 0x00, 0x00, 0x00, 0x7c, 0x00, 0x00, /* 0x2000-0x203f */ + 0x00, 0x00, 0x00, 0x00, 0x0f, 0xfc, 0x00, 0x00, /* 0x2040-0x207f */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x2080-0x20bf */ + 0x00, 0x00, 0xff, 0xff, 0xff, 0x07, 0x00, 0x00, /* 0x20c0-0x20ff */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x2100-0x213f */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x2140-0x217f */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x2180-0x21bf */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x21c0-0x21ff */ + /* 0x3000-0x31ff */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0xfc, 0x00, 0x00, /* 0x3000-0x303f */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x3040-0x307f */ + 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x00, /* 0x3080-0x30bf */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x30c0-0x30ff */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x3100-0x313f */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x3140-0x317f */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x3180-0x31bf */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x31c0-0x31ff */ + /* 0xfa00-0xfbff */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xfa00-0xfa3f */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xfa40-0xfa7f */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xfa80-0xfabf */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xfac0-0xfaff */ + 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, 0x00, /* 0xfb00-0xfb3f */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xfb40-0xfb7f */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xfb80-0xfbbf */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xfbc0-0xfbff */ + /* 0xfe00-0xffff */ + 0xff, 0xff, 0x00, 0x00, 0x0f, 0x00, 0x00, 0x00, /* 0xfe00-0xfe3f */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xfe40-0xfe7f */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xfe80-0xfebf */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, /* 0xfec0-0xfeff */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xff00-0xff3f */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xff40-0xff7f */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0xff80-0xffbf */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0e, /* 0xffc0-0xffff */ + /* 0x1d000-0x1d1ff */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1d000-0x1d03f */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1d040-0x1d07f */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1d080-0x1d0bf */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1d0c0-0x1d0ff */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0x1d100-0x1d13f */ + 0x00, 0x00, 0x00, 0x00, 0x80, 0x03, 0x00, 0xf8, /* 0x1d140-0x1d17f */ + 0xe7, 0x0f, 0x00, 0x00, 0x00, 0x3c, 0x00, 0x00, /* 0x1d180-0x1d1bf */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 /* 0x1d1c0-0x1d1ff */ +}; +static const signed char nonspacing_table_ind[240] = { + 0, 1, 2, 3, 4, 5, 6, 7, /* 0x0000-0x0fff */ + 8, -1, -1, 9, 10, -1, -1, -1, /* 0x1000-0x1fff */ + 11, -1, -1, -1, -1, -1, -1, -1, /* 0x2000-0x2fff */ + 12, -1, -1, -1, -1, -1, -1, -1, /* 0x3000-0x3fff */ + -1, -1, -1, -1, -1, -1, -1, -1, /* 0x4000-0x4fff */ + -1, -1, -1, -1, -1, -1, -1, -1, /* 0x5000-0x5fff */ + -1, -1, -1, -1, -1, -1, -1, -1, /* 0x6000-0x6fff */ + -1, -1, -1, -1, -1, -1, -1, -1, /* 0x7000-0x7fff */ + -1, -1, -1, -1, -1, -1, -1, -1, /* 0x8000-0x8fff */ + -1, -1, -1, -1, -1, -1, -1, -1, /* 0x9000-0x9fff */ + -1, -1, -1, -1, -1, -1, -1, -1, /* 0xa000-0xafff */ + -1, -1, -1, -1, -1, -1, -1, -1, /* 0xb000-0xbfff */ + -1, -1, -1, -1, -1, -1, -1, -1, /* 0xc000-0xcfff */ + -1, -1, -1, -1, -1, -1, -1, -1, /* 0xd000-0xdfff */ + -1, -1, -1, -1, -1, -1, -1, -1, /* 0xe000-0xefff */ + -1, -1, -1, -1, -1, 13, -1, 14, /* 0xf000-0xffff */ + -1, -1, -1, -1, -1, -1, -1, -1, /* 0x10000-0x10fff */ + -1, -1, -1, -1, -1, -1, -1, -1, /* 0x11000-0x11fff */ + -1, -1, -1, -1, -1, -1, -1, -1, /* 0x12000-0x12fff */ + -1, -1, -1, -1, -1, -1, -1, -1, /* 0x13000-0x13fff */ + -1, -1, -1, -1, -1, -1, -1, -1, /* 0x14000-0x14fff */ + -1, -1, -1, -1, -1, -1, -1, -1, /* 0x15000-0x15fff */ + -1, -1, -1, -1, -1, -1, -1, -1, /* 0x16000-0x16fff */ + -1, -1, -1, -1, -1, -1, -1, -1, /* 0x17000-0x17fff */ + -1, -1, -1, -1, -1, -1, -1, -1, /* 0x18000-0x18fff */ + -1, -1, -1, -1, -1, -1, -1, -1, /* 0x19000-0x19fff */ + -1, -1, -1, -1, -1, -1, -1, -1, /* 0x1a000-0x1afff */ + -1, -1, -1, -1, -1, -1, -1, -1, /* 0x1b000-0x1bfff */ + -1, -1, -1, -1, -1, -1, -1, -1, /* 0x1c000-0x1cfff */ + 15, -1, -1, -1, -1, -1, -1, -1 /* 0x1d000-0x1dfff */ +}; + +/* Determine number of column positions required for UC. */ +int +uc_width (ucs4_t uc, const char *encoding) +{ + /* Test for non-spacing or control character. */ + if ((uc >> 9) < 240) + { + int ind = nonspacing_table_ind[uc >> 9]; + if (ind >= 0) + if ((nonspacing_table_data[64*ind + ((uc >> 3) & 63)] >> (uc & 7)) & 1) + { + if (uc > 0 && uc < 0x100) + return -1; + else + return 0; + } + } + else if ((uc >> 9) == (0xe0000 >> 9)) + { + if (uc >= 0xe0020 ? uc <= 0xe007f : uc == 0xe0001) + return 0; + } + /* Test for double-width character. + * Generated from "grep '^....;[WF]' EastAsianWidth.txt" + * and "grep '^....;[^WF]' EastAsianWidth.txt" + */ + if (uc >= 0x1100 + && ((uc < 0x1160) /* Hangul Jamo */ + || (uc >= 0x2e80 && uc < 0xa4d0 /* CJK ... Yi */ + && !(uc == 0x303f)) + || (uc >= 0xac00 && uc < 0xd7a4) /* Hangul Syllables */ + || (uc >= 0xf900 && uc < 0xfb00) /* CJK Compatibility Ideographs */ + || (uc >= 0xfe30 && uc < 0xfe70) /* CJK Compatibility Forms */ + || (uc >= 0xff00 && uc < 0xff61) /* Fullwidth Forms */ + || (uc >= 0xffe0 && uc < 0xffe7) + || (uc >= 0x20000 && uc <= 0x2a6d6) /* CJK */ + || (uc >= 0x2f800 && uc <= 0x2fa1d) /* CJK Compatibility Ideographs */ + ) ) + return 2; + /* In ancient CJK encodings, Cyrillic and most other characters are + double-width as well. */ + if (uc >= 0x00A1 && uc < 0xFF61 && uc != 0x20A9 + && is_cjk_encoding (encoding)) + return 2; + return 1; +}
new file mode 100644 --- /dev/null +++ b/modules/uniwidth/width @@ -0,0 +1,25 @@ +Description: +Determine display width of Unicode character. + +Files: +lib/uniwidth/width.c +lib/uniwidth/cjk.h + +Depends-on: +uniwidth/base +streq + +configure.ac: + +Makefile.am: +lib_SOURCES += uniwidth/width.c + +Include: +"uniwidth.h" + +License: +LGPL + +Maintainer: +Bruno Haible +