intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 163 insertions, 0 deletions

diff --git a/contrib/libs/libiconv/hz.h b/contrib/libs/libiconv/hz.h
new file mode 100644
index 0000000000..db0b4b11dc
--- /dev/null
+++ b/contrib/libs/libiconv/hz.h
@@ -0,0 +1,163 @@
+/*
+ * Copyright (C) 1999-2001, 2008 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.
+ */
+
+/*
+ * HZ
+ */
+
+/* Specification: RFC 1842, RFC 1843 */
+
+/*
+ * The state is 1 in GB mode, 0 in ASCII mode.
+ */
+
+static int
+hz_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n)
+{
+  state_t state = conv->istate;
+  unsigned int count = 0;
+  unsigned char c;
+  for (;;) {
+    c = *s;
+    if (c == '~') {
+      if (n < count+2)
+        goto none;
+      c = s[1];
+      if (state == 0) {
+        if (c == '~') {
+          *pwc = (ucs4_t) '~';
+          conv->istate = state;
+          return count+2;
+        }
+        if (c == '{') {
+          state = 1;
+          s += 2; count += 2;
+          if (n < count+1)
+            goto none;
+          continue;
+        }
+        if (c == '\n') {
+          s += 2; count += 2;
+          if (n < count+1)
+            goto none;
+          continue;
+        }
+      } else {
+        if (c == '}') {
+          state = 0;
+          s += 2; count += 2;
+          if (n < count+1)
+            goto none;
+          continue;
+        }
+      }
+      goto ilseq;
+    }
+    break;
+  }
+  if (state == 0) {
+    *pwc = (ucs4_t) c;
+    conv->istate = state;
+    return count+1;
+  } else {
+    int ret;
+    if (n < count+2)
+      goto none;
+    ret = gb2312_mbtowc(conv,pwc,s,2);
+    if (ret == RET_ILSEQ)
+      goto ilseq;
+    if (ret != 2) abort();
+    conv->istate = state;
+    return count+2;
+  }
+
+none:
+  conv->istate = state;
+  return RET_TOOFEW(count);
+
+ilseq:
+  conv->istate = state;
+  return RET_SHIFT_ILSEQ(count);
+}
+
+static int
+hz_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n)
+{
+  state_t state = conv->ostate;
+  unsigned char buf[2];
+  int ret;
+
+  /* Code set 0 (ASCII or GB 1988-89) */
+  ret = ascii_wctomb(conv,buf,wc,1);
+  if (ret != RET_ILUNI) {
+    if (ret != 1) abort();
+    if (buf[0] < 0x80) {
+      int count = (state ? 3 : 1);
+      if (n < count)
+        return RET_TOOSMALL;
+      if (state) {
+        r[0] = '~';
+        r[1] = '}';
+        r += 2;
+        state = 0;
+      }
+      r[0] = buf[0];
+      conv->ostate = state;
+      return count;
+    }
+  }
+
+  /* Code set 1 (GB 2312-1980) */
+  ret = gb2312_wctomb(conv,buf,wc,2);
+  if (ret != RET_ILUNI) {
+    if (ret != 2) abort();
+    if (buf[0] < 0x80 && buf[1] < 0x80) {
+      int count = (state ? 2 : 4);
+      if (n < count)
+        return RET_TOOSMALL;
+      if (!state) {
+        r[0] = '~';
+        r[1] = '{';
+        r += 2;
+        state = 1;
+      }
+      r[0] = buf[0];
+      r[1] = buf[1];
+      conv->ostate = state;
+      return count;
+    }
+  }
+
+  return RET_ILUNI;
+}
+
+static int
+hz_reset (conv_t conv, unsigned char *r, int n)
+{
+  state_t state = conv->ostate;
+  if (state) {
+    if (n < 2)
+      return RET_TOOSMALL;
+    r[0] = '~';
+    r[1] = '}';
+    /* conv->ostate = 0; will be done by the caller */
+    return 2;
+  } else
+    return 0;
+}