/* Line breaking auxiliary tables.
Copyright (C) 2001-2003, 2006-2008 Free Software Foundation, Inc.
Written by Bruno Haible <bruno@clisp.org>, 2001.
This program is free software: you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation; either version 3 of the License, 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "unitypes.h"
/* Line breaking classification. */
enum
{
/* Values >= 24 are resolved at run time. */
LBP_BK = 24, /* mandatory break */
/*LBP_CR, carriage return - not used here because it's a DOSism */
/*LBP_LF, line feed - not used here because it's a DOSism */
LBP_CM = 25, /* attached characters and combining marks */
/*LBP_NL, next line - not used here because it's equivalent to LBP_BK */
/*LBP_SG, surrogates - not used here because they are not characters */
LBP_WJ = 0, /* word joiner */
LBP_ZW = 26, /* zero width space */
LBP_GL = 1, /* non-breaking (glue) */
LBP_SP = 27, /* space */
LBP_B2 = 2, /* break opportunity before and after */
LBP_BA = 3, /* break opportunity after */
LBP_BB = 4, /* break opportunity before */
LBP_HY = 5, /* hyphen */
LBP_CB = 28, /* contingent break opportunity */
LBP_CL = 6, /* closing punctuation */
LBP_EX = 7, /* exclamation/interrogation */
LBP_IN = 8, /* inseparable */
LBP_NS = 9, /* non starter */
LBP_OP = 10, /* opening punctuation */
LBP_QU = 11, /* ambiguous quotation */
LBP_IS = 12, /* infix separator (numeric) */
LBP_NU = 13, /* numeric */
LBP_PO = 14, /* postfix (numeric) */
LBP_PR = 15, /* prefix (numeric) */
LBP_SY = 16, /* symbols allowing breaks */
LBP_AI = 29, /* ambiguous (alphabetic or ideograph) */
LBP_AL = 17, /* ordinary alphabetic and symbol characters */
LBP_H2 = 18, /* Hangul LV syllable */
LBP_H3 = 19, /* Hangul LVT syllable */
LBP_ID = 20, /* ideographic */
LBP_JL = 21, /* Hangul L Jamo */
LBP_JV = 22, /* Hangul V Jamo */
LBP_JT = 23, /* Hangul T Jamo */
LBP_SA = 30, /* complex context (South East Asian) */
LBP_XX = 31 /* unknown */
};
#include "lbrkprop1.h"
static inline unsigned char
unilbrkprop_lookup (ucs4_t uc)
{
unsigned int index1 = uc >> lbrkprop_header_0;
if (index1 < lbrkprop_header_1)
{
int lookup1 = unilbrkprop.level1[index1];
if (lookup1 >= 0)
{
unsigned int index2 = (uc >> lbrkprop_header_2) & lbrkprop_header_3;
int lookup2 = unilbrkprop.level2[lookup1 + index2];
if (lookup2 >= 0)
{
unsigned int index3 = uc & lbrkprop_header_4;
return unilbrkprop.level3[lookup2 + index3];
}
}
}
return LBP_XX;
}
/* Table indexed by two line breaking classifications. */
#define D 1 /* direct break opportunity, empty in table 7.3 of UTR #14 */
#define I 2 /* indirect break opportunity, '%' in table 7.3 of UTR #14 */
#define P 3 /* prohibited break, '^' in table 7.3 of UTR #14 */
extern const unsigned char unilbrk_table[24][24];
/* We don't support line breaking of complex-context dependent characters
(Thai, Lao, Myanmar, Khmer) yet, because it requires dictionary lookup. */
