put in butchered version of libiconv.h from gnu libiconv, so we can have access to the non-posix functions.

git-svn-id: file:///srv/svn/repos/haiku/trunk/current@5819 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/kits/textencoding/libiconv/iconv.h

@@ -1,11 +1,81 @@
-// This file is required to patch in our iconv header
+/* Copyright (C) 1999-2003 Free Software Foundation, Inc.
-// to the iconv implementation.  The iconv implementation
+   This file is part of the GNU LIBICONV Library.
-// header is cluttered and inappropriate to include.  We
+
-// need to include our own header to ensure compatibility.
+   The GNU LIBICONV Library is free software; you can redistribute it
-// So we need to provide a little of the clutter here.
+   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.  */
+
+/* 
+   This file has been selectively butchered to serve our purposes:
+   1. it exports the functions without the "lib" prefix.
+   2. it includes iconvctl and related constans.
+   3. it does not use const in iconv.
+   4. it includes our iconv.h as well, so we won't incompatibly change it
+   - Andrew Bachmann
+*/
+
+#ifndef _LIBICONV_H
+#define _LIBICONV_H
+
+#define ICONV_CONST
+
+#define _LIBICONV_VERSION 0x0109    /* version number: (major<<8) + minor */
+extern int _libiconv_version;       /* Likewise */
 
 #include_next <iconv.h>
 
+/* Get size_t declaration. */
+#include <stddef.h>
+
+/* Get errno declaration and values. */
 #include <errno.h>
 
-#define ICONV_CONST
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Allocates descriptor for code conversion from encoding `fromcode' to
+   encoding `tocode'. */
+extern iconv_t iconv_open (const char* tocode, const char* fromcode);
+
+/* Converts, using conversion descriptor `cd', at most `*inbytesleft' bytes
+   starting at `*inbuf', writing at most `*outbytesleft' bytes starting at
+   `*outbuf'.
+   Decrements `*inbytesleft' and increments `*inbuf' by the same amount.
+   Decrements `*outbytesleft' and increments `*outbuf' by the same amount. */
+extern size_t iconv (iconv_t cd, ICONV_CONST char* * inbuf, size_t *inbytesleft, char* * outbuf, size_t *outbytesleft);
+
+/* Frees resources allocated for conversion descriptor `cd'. */
+extern int iconv_close (iconv_t cd);
+
+
+/* Nonstandard extensions. */
+
+/* Control of attributes. */
+extern int iconvctl (iconv_t cd, int request, void* argument);
+
+/* Requests for iconvctl. */
+#define ICONV_TRIVIALP            0  /* int *argument */
+#define ICONV_GET_TRANSLITERATE   1  /* int *argument */
+#define ICONV_SET_TRANSLITERATE   2  /* const int *argument */
+#define ICONV_GET_DISCARD_ILSEQ   3  /* int *argument */
+#define ICONV_SET_DISCARD_ILSEQ   4  /* const int *argument */
+
+#ifdef __cplusplus
+}
+#endif
+
+
+
+#endif /* _LIBICONV_H */