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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed
+ * with this work for additional information regarding copyright
+ * ownership. The ASF licenses this file to you under the Apache
+ * License, Version 2.0 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef INCLUDED_RTL_URI_H
+#define INCLUDED_RTL_URI_H
+
+#include "sal/config.h"
+
+#include "rtl/textenc.h"
+#include "rtl/ustring.h"
+#include "sal/saldllapi.h"
+#include "sal/types.h"
+
+#if defined __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+/** Various predefined URI 'char classes.'
+
+ A 'char class' defines which (ASCII) characters can be written 'as they
+ are' in a part of a Uri, and which characters have to be written using
+ escape sequences ('%' followed by two hex digits). Characters outside
+ the ASCII range are always written using escape sequences.
+
+ If there are other frequently used char classes, they can be added to
+ this enumeration; the function rtl_getUriCharClass() has to be adapted
+ then, too.
+ */
+typedef enum
+{
+ /** The empty char class.
+
+ All characters are written using escape sequences.
+ */
+ rtl_UriCharClassNone,
+
+ /** The RFC 2732 @<uric> char class.
+
+ @verbatim
+ The 'valid' characters are !$&'()*+,-./:;=?@[]_~ plus digits and
+ letters.
+ @endverbatim
+ */
+ rtl_UriCharClassUric,
+
+ /** The RFC 2396 @<uric_no_slash> char class.
+
+ @verbatim
+ The 'valid' characters are !$&'()*+,-.:;=?@_~ plus digits and letters.
+ @endverbatim
+ */
+ rtl_UriCharClassUricNoSlash,
+
+ /** The RFC 2396 @<rel_segment> char class.
+
+ @verbatim
+ The 'valid' characters are !$&'()*+,-.;=@_~ plus digits and letters.
+ @endverbatim
+ */
+ rtl_UriCharClassRelSegment,
+
+ /** The RFC 2396 @<reg_name> char class.
+
+ @verbatim
+ The 'valid' characters are !$&'()*+,-.:;=@_~ plus digits and letters.
+ @endverbatim
+ */
+ rtl_UriCharClassRegName,
+
+ /** The RFC 2396 @<userinfo> char class.
+
+ @verbatim
+ The 'valid' characters are !$&'()*+,-.:;=_~ plus digits and letters.
+ @endverbatim
+ */
+ rtl_UriCharClassUserinfo,
+
+ /** The RFC 2396 @<pchar> char class.
+
+ @verbatim
+ The 'valid' characters are !$&'()*+,-.:=@_~ plus digits and letters.
+ @endverbatim
+ */
+ rtl_UriCharClassPchar,
+
+ /** The char class for the values of uno URL parameters.
+
+ @verbatim
+ The 'valid' characters are !$&'()*+-./:?@_~ plus digits and letters.
+ @endverbatim
+ */
+ rtl_UriCharClassUnoParamValue,
+
+ rtl_UriCharClass_FORCE_EQUAL_SIZE = SAL_MAX_ENUM
+}
+rtl_UriCharClass;
+
+/** The mechanism describing how escape sequences in the input of
+ rtl_uriEncode() are handled.
+ */
+typedef enum
+{
+ /** The special meaning of '%' is ignored (i.e., there are by definition
+ no escape sequences in the input).
+
+ This mechanism is useful to encode user input as part of a URI (e.g.,
+ the user-supplied password in an ftp URL---'%20abcde' is a valid
+ password, so do not assume that the '%20' is an escaped space).
+ */
+ rtl_UriEncodeIgnoreEscapes,
+
+ /** All escape sequences ('%' followed by two hex digits) are kept intact,
+ even if they represent characters that need not be escaped or if they
+ do not even map to characters in the given charset.
+
+ This mechanism is useful when passing on complete URIs more or less
+ unmodified (e.g., within an HTTP proxy): missing escape sequences are
+ added, but existing escape sequences are not touched (except that any
+ lower case hex digits are replaced by upper case hex digits).
+ */
+ rtl_UriEncodeKeepEscapes,
+
+ /** All escape sequences ('%' followed by two hex digits) are resolved in
+ a first step; only those that represent characters that need to be
+ escaped are kept intact.
+
+ This mechanism is useful to properly encode complete URIs entered by
+ the user: the URI is brought into a 'canonic form,' but care is taken
+ not to damage (valid) escape sequences the (careful) user already
+ entered as such.
+ */
+ rtl_UriEncodeCheckEscapes,
+
+ /** Like rtl_UriEncodeIgnoreEscapes, but indicating failure when converting
+ unmappable characters.
+
+ @since UDK 3.2.0
+ */
+ rtl_UriEncodeStrict,
+
+ /** Like rtl_UriEncodeKeepEscapes, but indicating failure when converting
+ unmappable characters.
+
+ @since UDK 3.2.7
+ */
+ rtl_UriEncodeStrictKeepEscapes,
+
+ rtl_UriEncode_FORCE_EQUAL_SIZE = SAL_MAX_ENUM
+}
+rtl_UriEncodeMechanism;
+
+/** The mechanism describing how rtl_uriDecode() translates (part of) a URI
+ into a Unicode string.
+ */
+typedef enum
+{
+ /** The text is returned completely unmodified.
+ */
+ rtl_UriDecodeNone,
+
+ /** The text is returned in the form of an IURI (cf.
+ draft-masinter-url-i18n-05.txt).
+
+ All escape sequences representing ASCII characters (%00--%7F) are
+ kept, all other escape sequences are interpreted as UTF-8 characters
+ and translated to Unicode, if possible.
+ */
+ rtl_UriDecodeToIuri,
+
+ /** The text is decoded.
+
+ All escape sequences representing characters from the given charset
+ are decoded and translated to Unicode, if possible.
+ */
+ rtl_UriDecodeWithCharset,
+
+ /** Like rtl_UriDecodeWithCharset, but indicating failure when converting
+ unmappable characters.
+
+ @since UDK 3.2.0
+ */
+ rtl_UriDecodeStrict,
+
+ rtl_UriDecode_FORCE_EQUAL_SIZE = SAL_MAX_ENUM
+}
+rtl_UriDecodeMechanism;
+
+/** Map a predefined rtl_UriCharClass to a form usable by rtl_uriEncode().
+
+ The function rtl_uriEncode() expects an array of 128 booleans, and this
+ function maps rtl_UriCharClass enumeration members to such arrays.
+
+ @param eCharClass
+ Any valid member of rtl_UriCharClass.
+
+ @return
+ An array of 128 booleans, to be used in calls to rtl_uriEncode().
+ */
+SAL_DLLPUBLIC sal_Bool const * SAL_CALL rtl_getUriCharClass(rtl_UriCharClass eCharClass)
+ SAL_THROW_EXTERN_C();
+
+/** Encode a text as (part of) a URI.
+
+ @param pText
+ Any Unicode string. Must not be null.
+
+ @param pCharClass
+ A char class, represented as an array of 128 booleans (true means keep the
+ corresponding ASCII character unencoded, false means encode it). Must not
+ be null, and the boolean corresponding to the percent sign (0x25) must be
+ false. (See rtl_getUriCharClass() for a function mapping from
+ rtl_UriCharClass to such arrays.)
+
+ @param eMechanism
+ The mechanism describing how escape sequences in the input text are
+ handled.
+
+ @param eCharset
+ When Unicode characters from the input text have to be written using
+ escape sequences (because they are either outside the ASCII range or do
+ not belong to the given char class), they are first translated into this
+ charset before being encoded using escape sequences.
+
+ Also, if the encode mechanism is rtl_UriEncodeCheckEscapes, all escape
+ sequences already present in the input text are interpreted as characters
+ from this charset.
+
+ @param pResult
+ Returns an encoded representation of the input text. Must itself not be
+ null, and must point to either null or a valid string.
+
+ If the encode mechanism is rtl_UriEncodeStrict, and pText cannot be
+ converted to eCharset because it contains unmappable characters (which
+ implies that pText is not empty), then an empty string is returned.
+ */
+SAL_DLLPUBLIC void SAL_CALL rtl_uriEncode(
+ rtl_uString * pText,
+ sal_Bool const * pCharClass,
+ rtl_UriEncodeMechanism eMechanism,
+ rtl_TextEncoding eCharset,
+ rtl_uString ** pResult)
+ SAL_THROW_EXTERN_C();
+
+/** Decode (a part of) a URI.
+
+ @param pText
+ Any Unicode string. Must not be null. (If the input is indeed part of a
+ valid URI, this string will only contain a subset of the ASCII characters,
+ but this function also handles other Unicode characters properly.)
+
+ @param eMechanism
+ The mechanism describing how the input text is translated into a Unicode
+ string.
+
+ @param eCharset
+ When the decode mechanism is rtl_UriDecodeWithCharset, all escape
+ sequences in the input text are interpreted as characters from this
+ charset. Those characters are translated to Unicode characters in the
+ resulting output, if possible.
+
+ When the decode mechanism is rtl_UriDecodeNone or rtl_UriDecodeToIuri,
+ this parameter is ignored (and is best specified as
+ RTL_TEXTENCODING_UTF8).
+
+ @param pResult
+ Returns a decoded representation of the input text. Must itself not be
+ null, and must point to either null or a valid string.
+
+ If the decode mechanism is rtl_UriDecodeStrict, and pText cannot be
+ converted to eCharset because it contains (encodings of) unmappable
+ characters (which implies that pText is not empty), then an empty string is
+ returned.
+ */
+SAL_DLLPUBLIC void SAL_CALL rtl_uriDecode(
+ rtl_uString * pText,
+ rtl_UriDecodeMechanism eMechanism,
+ rtl_TextEncoding eCharset,
+ rtl_uString ** pResult)
+ SAL_THROW_EXTERN_C();
+
+/** Convert a relative URI reference into an absolute URI.
+
+ This function uses the strict parser algorithm described in RFC 3986,
+ section 5.2.
+
+ This function signals exceptions by returning false and letting pException
+ point to a message explaining the exception.
+
+ @param pBaseUriRef
+ An absolute URI that serves as the base URI. If it has to be inspected
+ (i.e., pRelUriRef is not an absolute URI already), and it is not an absolute
+ URI (i.e., does not begin with a @<scheme ":"> part), an exception will be
+ signaled.
+
+ @param pRelUriRef
+ A URI reference that may be either absolute or relative. If it is
+ absolute, it will be returned unmodified.
+
+ @param pResult
+ Returns an absolute URI. Must itself not be null, and must point to either
+ null or a valid string. If an exception is signalled, it is left unchanged.
+
+ @param pException
+ Returns an explanatory message in case an exception is signalled. Must
+ itself not be null, and must point to either null or a valid string. If no
+ exception is signalled, it is left unchanged.
+
+ @return
+ True if no exception is signalled, otherwise false.
+ */
+SAL_DLLPUBLIC sal_Bool SAL_CALL rtl_uriConvertRelToAbs(
+ rtl_uString * pBaseUriRef,
+ rtl_uString * pRelUriRef,
+ rtl_uString ** pResult,
+ rtl_uString ** pException)
+ SAL_THROW_EXTERN_C();
+
+#if defined __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif // INCLUDED_RTL_URI_H
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */