pmt: initial 3.0.2 update

include/libgnulib/uniconv/u-conv-from-enc.h

@@ -0,0 +1,99 @@
+/* Conversion to UTF-16/UTF-32 from legacy encodings.
+   Copyright (C) 2002, 2006-2007, 2009-2024 Free Software Foundation, Inc.
+
+   This file is free software.
+   It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
+   You can redistribute it and/or modify it under either
+     - the terms of the GNU Lesser General Public License as published
+       by the Free Software Foundation, either version 3, or (at your
+       option) any later version, or
+     - the terms of the GNU General Public License as published by the
+       Free Software Foundation; either version 2, or (at your option)
+       any later version, or
+     - the same dual license "the GNU LGPLv3+ or the GNU GPLv2+".
+
+   This file 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 and the GNU General Public License
+   for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License and of the GNU General Public License along with this
+   program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+UNIT *
+FUNC (const char *fromcode,
+      enum iconv_ilseq_handler handler,
+      const char *src, size_t srclen,
+      size_t *offsets,
+      UNIT *resultbuf, size_t *lengthp)
+{
+#if HAVE_UTF_NAME
+  char *result = (char *) resultbuf;
+  size_t length = *lengthp * sizeof (UNIT);
+
+  if (mem_iconveha (src, srclen, fromcode, UTF_NAME, true, handler,
+                    offsets, &result, &length) < 0)
+    return NULL;
+  if (offsets != NULL)
+    {
+      /* Convert 'char *' offsets to 'UNIT *' offsets.  */
+      size_t *offsets_end = offsets + srclen;
+      size_t *o;
+
+      for (o = offsets; o < offsets_end; o++)
+        if (*o != (size_t)(-1))
+          *o = *o / sizeof (UNIT);
+    }
+  if ((length % sizeof (UNIT)) != 0)
+    abort ();
+  *lengthp = length / sizeof (UNIT);
+  return (UNIT *) result;
+#else
+  uint8_t *utf8_string;
+  size_t utf8_length;
+  UNIT *result;
+
+  utf8_string =
+    u8_conv_from_encoding (fromcode, handler, src, srclen, offsets,
+                           NULL, &utf8_length);
+  if (utf8_string == NULL)
+    return NULL;
+  result = U8_TO_U (utf8_string, utf8_length, resultbuf, lengthp);
+  if (result == NULL)
+    {
+      int saved_errno = errno;
+      free (utf8_string);
+      errno = saved_errno;
+      return NULL;
+    }
+  if (offsets != NULL)
+    {
+      size_t length = *lengthp;
+      size_t *offsets_end = offsets + srclen;
+      size_t *o;
+      size_t off8 = 0;  /* offset into utf8_string */
+      size_t offunit = 0;       /* offset into result */
+
+      for (o = offsets; o < offsets_end; o++)
+        if (*o != (size_t)(-1))
+          {
+            while (off8 < *o)
+              {
+                int count8 = u8_mblen (utf8_string + off8, utf8_length - off8);
+                int countunit = U_MBLEN (result + offunit, length - offunit);
+                if (count8 < 0 || countunit < 0)
+                  abort ();
+                off8 += count8;
+                offunit += countunit;
+              }
+            if (*o != off8)
+              abort ();
+            *o = offunit;
+          }
+    }
+  free (utf8_string);
+  return result;
+#endif
+}