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authorRemko Tronçon <git@el-tramo.be>2010-03-28 17:31:01 (GMT)
committerRemko Tronçon <git@el-tramo.be>2010-03-28 17:31:01 (GMT)
commit2e739049b4581c9547943867cea31ad6b2c3784a (patch)
treedd76471c9f178f6420fd78827577b11e113e859d /3rdParty/LibIDN/src/punycode.h
parent23c74447079a30544f0c9134e9739d99f3d6a0f1 (diff)
downloadswift-contrib-2e739049b4581c9547943867cea31ad6b2c3784a.zip
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Adding LibIDN module contents again.
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diff --git a/3rdParty/LibIDN/src/punycode.h b/3rdParty/LibIDN/src/punycode.h
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+/* punycode.h --- Declarations for punycode functions.
+ * Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007 Simon Josefsson
+ *
+ * This file is part of GNU Libidn.
+ *
+ * GNU Libidn 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 2.1 of the License, or (at your option) any later version.
+ *
+ * GNU Libidn 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 GNU Libidn; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
+ *
+ */
+
+/*
+ * This file is derived from RFC 3492bis written by Adam M. Costello.
+ *
+ * Disclaimer and license: Regarding this entire document or any
+ * portion of it (including the pseudocode and C code), the author
+ * makes no guarantees and is not responsible for any damage resulting
+ * from its use. The author grants irrevocable permission to anyone
+ * to use, modify, and distribute it in any way that does not diminish
+ * the rights of anyone else to use, modify, and distribute it,
+ * provided that redistributed derivative works do not contain
+ * misleading author or version information. Derivative works need
+ * not be licensed under similar terms.
+ *
+ * Copyright (C) The Internet Society (2003). All Rights Reserved.
+ *
+ * This document and translations of it may be copied and furnished to
+ * others, and derivative works that comment on or otherwise explain it
+ * or assist in its implementation may be prepared, copied, published
+ * and distributed, in whole or in part, without restriction of any
+ * kind, provided that the above copyright notice and this paragraph are
+ * included on all such copies and derivative works. However, this
+ * document itself may not be modified in any way, such as by removing
+ * the copyright notice or references to the Internet Society or other
+ * Internet organizations, except as needed for the purpose of
+ * developing Internet standards in which case the procedures for
+ * copyrights defined in the Internet Standards process must be
+ * followed, or as required to translate it into languages other than
+ * English.
+ *
+ * The limited permissions granted above are perpetual and will not be
+ * revoked by the Internet Society or its successors or assigns.
+ *
+ * This document and the information contained herein is provided on an
+ * "AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING
+ * TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING
+ * BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION
+ * HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF
+ * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+#ifndef _PUNYCODE_H
+#define _PUNYCODE_H
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#include <stddef.h> /* size_t */
+#include <idn-int.h> /* uint32_t */
+
+ enum punycode_status
+ {
+ punycode_success = 0,
+ punycode_bad_input = 1, /* Input is invalid. */
+ punycode_big_output = 2, /* Output would exceed the space provided. */
+ punycode_overflow = 3 /* Wider integers needed to process input. */
+ };
+
+ typedef enum
+ {
+ PUNYCODE_SUCCESS = punycode_success,
+ PUNYCODE_BAD_INPUT = punycode_bad_input,
+ PUNYCODE_BIG_OUTPUT = punycode_big_output,
+ PUNYCODE_OVERFLOW = punycode_overflow
+ } Punycode_status;
+
+ extern const char *punycode_strerror (Punycode_status rc);
+
+/* punycode_uint needs to be unsigned and needs to be */
+/* at least 26 bits wide. */
+
+ typedef uint32_t punycode_uint;
+
+ extern int punycode_encode (size_t input_length,
+ const punycode_uint input[],
+ const unsigned char case_flags[],
+ size_t * output_length, char output[]);
+
+/*
+ punycode_encode() converts a sequence of code points (presumed to be
+ Unicode code points) to Punycode.
+
+ Input arguments (to be supplied by the caller):
+
+ input_length
+ The number of code points in the input array and the number
+ of flags in the case_flags array.
+
+ input
+ An array of code points. They are presumed to be Unicode
+ code points, but that is not strictly REQUIRED. The
+ array contains code points, not code units. UTF-16 uses
+ code units D800 through DFFF to refer to code points
+ 10000..10FFFF. The code points D800..DFFF do not occur in
+ any valid Unicode string. The code points that can occur in
+ Unicode strings (0..D7FF and E000..10FFFF) are also called
+ Unicode scalar values.
+
+ case_flags
+ A null pointer or an array of boolean values parallel to
+ the input array. Nonzero (true, flagged) suggests that the
+ corresponding Unicode character be forced to uppercase after
+ being decoded (if possible), and zero (false, unflagged)
+ suggests that it be forced to lowercase (if possible).
+ ASCII code points (0..7F) are encoded literally, except that
+ ASCII letters are forced to uppercase or lowercase according
+ to the corresponding case flags. If case_flags is a null
+ pointer then ASCII letters are left as they are, and other
+ code points are treated as unflagged.
+
+ Output arguments (to be filled in by the function):
+
+ output
+ An array of ASCII code points. It is *not* null-terminated;
+ it will contain zeros if and only if the input contains
+ zeros. (Of course the caller can leave room for a
+ terminator and add one if needed.)
+
+ Input/output arguments (to be supplied by the caller and overwritten
+ by the function):
+
+ output_length
+ The caller passes in the maximum number of ASCII code points
+ that it can receive. On successful return it will contain
+ the number of ASCII code points actually output.
+
+ Return value:
+
+ Can be any of the punycode_status values defined above except
+ punycode_bad_input. If not punycode_success, then output_size
+ and output might contain garbage.
+*/
+
+ extern int punycode_decode (size_t input_length,
+ const char input[],
+ size_t * output_length,
+ punycode_uint output[],
+ unsigned char case_flags[]);
+
+/*
+ punycode_decode() converts Punycode to a sequence of code points
+ (presumed to be Unicode code points).
+
+ Input arguments (to be supplied by the caller):
+
+ input_length
+ The number of ASCII code points in the input array.
+
+ input
+ An array of ASCII code points (0..7F).
+
+ Output arguments (to be filled in by the function):
+
+ output
+ An array of code points like the input argument of
+ punycode_encode() (see above).
+
+ case_flags
+ A null pointer (if the flags are not needed by the caller)
+ or an array of boolean values parallel to the output array.
+ Nonzero (true, flagged) suggests that the corresponding
+ Unicode character be forced to uppercase by the caller (if
+ possible), and zero (false, unflagged) suggests that it
+ be forced to lowercase (if possible). ASCII code points
+ (0..7F) are output already in the proper case, but their
+ flags will be set appropriately so that applying the flags
+ would be harmless.
+
+ Input/output arguments (to be supplied by the caller and overwritten
+ by the function):
+
+ output_length
+ The caller passes in the maximum number of code points
+ that it can receive into the output array (which is also
+ the maximum number of flags that it can receive into the
+ case_flags array, if case_flags is not a null pointer). On
+ successful return it will contain the number of code points
+ actually output (which is also the number of flags actually
+ output, if case_flags is not a null pointer). The decoder
+ will never need to output more code points than the number
+ of ASCII code points in the input, because of the way the
+ encoding is defined. The number of code points output
+ cannot exceed the maximum possible value of a punycode_uint,
+ even if the supplied output_length is greater than that.
+
+ Return value:
+
+ Can be any of the punycode_status values defined above. If not
+ punycode_success, then output_length, output, and case_flags
+ might contain garbage.
+*/
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* _PUNYCODE_H */