Intermediate changes

1 files changed, 126 insertions, 0 deletions

diff --git a/contrib/libs/libiconv/cp936.h b/contrib/libs/libiconv/cp936.h
new file mode 100644
index 0000000000..06e510cae2
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+++ b/contrib/libs/libiconv/cp936.h
@@ -0,0 +1,126 @@
+/*
+ * Copyright (C) 2005 Free Software Foundation, Inc.
+ * This file is part of the GNU LIBICONV Library.
+ *
+ * The GNU LIBICONV Library 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
+ * of the License, or (at your option) any later version.
+ *
+ * The GNU LIBICONV 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with the GNU LIBICONV Library; see the file COPYING.LIB.
+ * If not, write to the Free Software Foundation, Inc., 51 Franklin Street,
+ * Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+/*
+ * CP936
+ */
+
+/*
+ * The IANA has CP936 as an alias of GBK. But GBK is an official Chinese
+ * specification, whereas CP936 is de-facto maintained by Microsoft. And,
+ * of course, Microsoft modified CP936 since 1999.
+ *
+ * The differences from GBK are:
+ *
+ * 1. A single character:
+ *
+ *    code   CP936.TXT
+ *    0x80   0x20AC # EURO SIGN
+ *
+ * Some variants of CP936 (in JDK, Windows-2000, ICU) also add:
+ *
+ * 2. Private area mappings:
+ *
+ *              code                 Unicode
+ *    0x{A1..A2}{40..7E,80..A0}  U+E4C6..U+E585
+ *    0x{AA..AF,F8..FE}{A1..FE}  U+E000..U+E4C5
+ *
+ * We add them too because, although there are backward compatibility problems
+ * when a character from a private area is moved to an official Unicode code
+ * point, they are useful for some people in practice.
+ */
+
+static int
+cp936_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n)
+{
+  /* Try GBK first. */
+  {
+    int ret = ces_gbk_mbtowc(conv,pwc,s,n);
+    if (ret != RET_ILSEQ)
+      return ret;
+  }
+  /* Then handle the additional mappings. */
+  {
+    unsigned char c = *s;
+    if (c == 0x80) {
+      *pwc = 0x20ac;
+      return 1;
+    }
+    /* User-defined characters */
+    if (c >= 0xa1 && c <= 0xa2) {
+      if (n < 2)
+        return RET_TOOFEW(0);
+      {
+        unsigned char c2 = s[1];
+        if ((c2 >= 0x40 && c2 < 0x7f) || (c2 >= 0x80 && c2 < 0xa1)) {
+          *pwc = 0xe4c6 + 96 * (c - 0xa1) + (c2 - (c2 >= 0x80 ? 0x41 : 0x40));
+          return 2;
+        }
+      }
+    } else if ((c >= 0xaa && c < 0xb0) || (c >= 0xf8 && c < 0xff)) {
+      if (n < 2)
+        return RET_TOOFEW(0);
+      {
+        unsigned char c2 = s[1];
+        if (c2 >= 0xa1 && c2 < 0xff) {
+          *pwc = 0xe000 + 94 * (c - (c >= 0xf8 ? 0xf2 : 0xaa)) + (c2 - 0xa1);
+          return 2;
+        }
+      }
+    }
+  }
+  return RET_ILSEQ;
+}
+
+static int
+cp936_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n)
+{
+  /* Try GBK first. */
+  {
+    int ret = ces_gbk_wctomb(conv,r,wc,n);
+    if (ret != RET_ILUNI)
+      return ret;
+  }
+  /* Then handle the additional mappings. */
+  if (wc >= 0xe000 && wc < 0xe586) {
+    /* User-defined characters */
+    if (n < 2)
+      return RET_TOOFEW(0);
+    if (wc < 0xe4c6) {
+      unsigned int i = wc - 0xe000;
+      unsigned int c1 = i / 94;
+      unsigned int c2 = i % 94;
+      r[0] = c1 + (c1 < 6 ? 0xaa : 0xf2);
+      r[1] = c2 + 0xa1;
+      return 2;
+    } else {
+      unsigned int i = wc - 0xe4c6;
+      unsigned int c1 = i / 96;
+      unsigned int c2 = i % 96;
+      r[0] = c1 + 0xa1;
+      r[1] = c2 + (c2 < 0x3f ? 0x40 : 0x41);
+      return 2;
+    }
+  } else if (wc == 0x20ac) {
+    r[0] = 0x80;
+    return 1;
+  }
+  return RET_ILUNI;
+}