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-rw-r--r--MSVC/iconv/ucs4.h67
1 files changed, 67 insertions, 0 deletions
diff --git a/MSVC/iconv/ucs4.h b/MSVC/iconv/ucs4.h
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+++ b/MSVC/iconv/ucs4.h
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+/*
+ * Copyright (C) 1999-2001 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., 59 Temple Place -
+ * Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+/*
+ * UCS-4
+ */
+
+/* Here we accept FFFE0000/0000FEFF marks as endianness indicators everywhere
+ in the stream, not just at the beginning. The default is big-endian. */
+/* The state is 0 if big-endian, 1 if little-endian. */
+static int
+ucs4_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n)
+{
+ state_t state = conv->istate;
+ int count = 0;
+ for (; n >= 4;) {
+ ucs4_t wc = (state
+ ? s[0] + (s[1] << 8) + (s[2] << 16) + (s[3] << 24)
+ : (s[0] << 24) + (s[1] << 16) + (s[2] << 8) + s[3]);
+ s += 4; n -= 4; count += 4;
+ if (wc == 0x0000feff) {
+ } else if (wc == 0xfffe0000u) {
+ state ^= 1;
+ } else if (wc <= 0x7fffffff) {
+ *pwc = wc;
+ conv->istate = state;
+ return count;
+ } else
+ return RET_ILSEQ;
+ }
+ conv->istate = state;
+ return RET_TOOFEW(count);
+}
+
+/* But we output UCS-4 in big-endian order, without byte-order mark. */
+static int
+ucs4_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n)
+{
+ if (wc <= 0x7fffffff) {
+ if (n >= 4) {
+ r[0] = (unsigned char) (wc >> 24);
+ r[1] = (unsigned char) (wc >> 16);
+ r[2] = (unsigned char) (wc >> 8);
+ r[3] = (unsigned char) wc;
+ return 4;
+ } else
+ return RET_TOOSMALL;
+ } else
+ return RET_ILUNI;
+}