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-rw-r--r--REORG.TODO/iconvdata/jis0208.h112
1 files changed, 112 insertions, 0 deletions
diff --git a/REORG.TODO/iconvdata/jis0208.h b/REORG.TODO/iconvdata/jis0208.h
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+++ b/REORG.TODO/iconvdata/jis0208.h
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+/* Access functions for JISX0208 conversion.
+   Copyright (C) 1997-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
+
+   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/>.  */
+
+#ifndef _JIS0208_H
+#define _JIS0208_H	1
+
+#include <gconv.h>
+#include <stdint.h>
+
+/* Struct for table with indeces in UCS mapping table.  */
+struct jisx0208_ucs_idx
+{
+  uint16_t start;
+  uint16_t end;
+  uint16_t idx;
+};
+
+
+/* Conversion table.  */
+extern const uint16_t __jis0208_to_ucs[];
+
+#define JIS0208_LAT1_MIN 0xa2
+#define JIS0208_LAT1_MAX 0xf7
+extern const char __jisx0208_from_ucs4_lat1[JIS0208_LAT1_MAX + 1
+					    - JIS0208_LAT1_MIN][2];
+extern const char __jisx0208_from_ucs4_greek[0xc1][2];
+extern const struct jisx0208_ucs_idx __jisx0208_from_ucs_idx[];
+extern const char __jisx0208_from_ucs_tab[][2];
+
+
+static inline uint32_t
+__attribute ((always_inline))
+jisx0208_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)
+    return __UNKNOWN_10646_CHAR;
+
+  if (avail < 2)
+    return 0;
+
+  ch2 = (*s)[1];
+  if (ch2 < offset || (ch2 - offset) <= 0x20 || (ch2 - offset) >= 0x7f)
+    return __UNKNOWN_10646_CHAR;
+
+  idx = (ch - 0x21 - offset) * 94 + (ch2 - 0x21 - offset);
+  if (idx >= 0x1e80)
+    return __UNKNOWN_10646_CHAR;
+
+  (*s) += 2;
+
+  return __jis0208_to_ucs[idx] ?: ((*s) -= 2, __UNKNOWN_10646_CHAR);
+}
+
+
+static inline size_t
+__attribute ((always_inline))
+ucs4_to_jisx0208 (uint32_t wch, unsigned char *s, size_t avail)
+{
+  unsigned int ch = (unsigned int) wch;
+  const char *cp;
+
+  if (avail < 2)
+    return 0;
+
+  if (ch >= JIS0208_LAT1_MIN && ch <= JIS0208_LAT1_MAX)
+    cp = __jisx0208_from_ucs4_lat1[ch - JIS0208_LAT1_MIN];
+  else if (ch >= 0x391 && ch <= 0x451)
+    cp = __jisx0208_from_ucs4_greek[ch - 0x391];
+  else
+    {
+      const struct jisx0208_ucs_idx *rp = __jisx0208_from_ucs_idx;
+
+      if (ch >= 0xffff)
+	return __UNKNOWN_10646_CHAR;
+      while (ch > rp->end)
+	++rp;
+      if (ch >= rp->start)
+	cp = __jisx0208_from_ucs_tab[rp->idx + ch - rp->start];
+      else
+	return __UNKNOWN_10646_CHAR;
+    }
+
+  if (cp[0] == '\0')
+    return __UNKNOWN_10646_CHAR;
+
+  s[0] = cp[0];
+  s[1] = cp[1];
+
+  return 2;
+}
+
+#endif /* jis0208.h */