Imported Upstream version 0.9.1upstream/0.9.1

1 files changed, 94 insertions, 0 deletions

diff --git a/lib/unilbrk/lbrktables.h b/lib/unilbrk/lbrktables.h
new file mode 100644
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+++ b/lib/unilbrk/lbrktables.h
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+/* 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. */