summaryrefslogtreecommitdiff
path: root/lib/uniconv/u-conv-from-enc.h
diff options
context:
space:
mode:
Diffstat (limited to 'lib/uniconv/u-conv-from-enc.h')
-rw-r--r--lib/uniconv/u-conv-from-enc.h91
1 files changed, 91 insertions, 0 deletions
diff --git a/lib/uniconv/u-conv-from-enc.h b/lib/uniconv/u-conv-from-enc.h
new file mode 100644
index 0000000..fa0f0d3
--- /dev/null
+++ b/lib/uniconv/u-conv-from-enc.h
@@ -0,0 +1,91 @@
+/* Conversion to UTF-16/UTF-32 from legacy encodings.
+ Copyright (C) 2002, 2006-2007, 2009 Free Software Foundation, Inc.
+
+ This program 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 3 of the License, or
+ (at your option) any later version.
+
+ This program 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 this program. If not, see <http://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
+}