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authorZack Weinberg <zackw@panix.com>2017-06-08 15:39:03 -0400
committerZack Weinberg <zackw@panix.com>2017-06-08 15:39:03 -0400
commit5046dbb4a7eba5eccfd258f92f4735c9ffc8d069 (patch)
tree4470480d904b65cf14ca524f96f79eca818c3eaf /REORG.TODO/iconvdata/cns11643l2.h
parent199fc19d3aaaf57944ef036e15904febe877fc93 (diff)
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Prepare for radical source tree reorganization. zack/build-layout-experiment
All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).
Diffstat (limited to 'REORG.TODO/iconvdata/cns11643l2.h')
-rw-r--r--REORG.TODO/iconvdata/cns11643l2.h86
1 files changed, 86 insertions, 0 deletions
diff --git a/REORG.TODO/iconvdata/cns11643l2.h b/REORG.TODO/iconvdata/cns11643l2.h
new file mode 100644
index 0000000000..2f48b845ca
--- /dev/null
+++ b/REORG.TODO/iconvdata/cns11643l2.h
@@ -0,0 +1,86 @@
+/* Access functions for CNS 11643, plane 2 handling.
+   Copyright (C) 1998-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
+
+   The GNU C Library 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 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library 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 the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <stdint.h>
+#include <gconv.h>
+
+/* Table for CNS 11643, plane 2 to UCS4 conversion.  */
+extern const uint16_t __cns11643l2_to_ucs4_tab[];
+
+
+static inline uint32_t
+__attribute ((always_inline))
+cns11643l2_to_ucs4 (const unsigned char **s, size_t avail,
+		    unsigned char offset)
+{
+  unsigned char ch = *(*s);
+  unsigned char ch2;
+  int idx;
+
+  if (ch < offset || (ch - offset) <= 0x20 || (ch - offset) > 0x7d)
+    return __UNKNOWN_10646_CHAR;
+
+  if (avail < 2)
+    return 0;
+
+  ch2 = (*s)[1];
+  if ((ch2 - offset) <= 0x20 || (ch2 - offset) >= 0x7f)
+    return __UNKNOWN_10646_CHAR;
+
+  idx = (ch - 0x21 - offset) * 94 + (ch2 - 0x21 - offset);
+  if (idx > 0x1de1)
+    return __UNKNOWN_10646_CHAR;
+
+  (*s) += 2;
+
+  return __cns11643l2_to_ucs4_tab[idx] ?: ((*s) -= 2, __UNKNOWN_10646_CHAR);
+}
+
+
+/* The table which contains the CNS 11643 level 2 mappings.  */
+extern const char __cns11643_from_ucs4p0_tab[][3];
+
+
+static inline size_t
+__attribute ((always_inline))
+ucs4_to_cns11643l2 (uint32_t wch, unsigned char *s, size_t avail)
+{
+  unsigned int ch = (unsigned int) wch;
+  const char *cp = NULL;
+
+  if (ch >= 0x4e07 && ch <= 0x9fa4)
+    {
+      cp = __cns11643_from_ucs4p0_tab[ch - 0x3400];
+      if (cp[0] == '\2')
+	++cp;
+      else
+	cp = NULL;
+    }
+
+  if (cp == NULL)
+    return __UNKNOWN_10646_CHAR;
+
+  if (avail < 2)
+    return 0;
+
+  s[0] = cp[0];
+  s[1] = cp[1];
+
+  return 2;
+}