91 строка
3.0 KiB
C
91 строка
3.0 KiB
C
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/*
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* Copyright (c) 2012 Los Alamos National Security, LLC.
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* All rights reserved.
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* $COPYRIGHT$
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*
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* Additional copyrights may follow
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*
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* $HEADER$
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*
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* @file
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*/
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/*
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Per RFC3986:
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The generic URI syntax consists of a hierarchical sequence of
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components referred to as the scheme, authority, path, query, and
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fragment.
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URI = scheme ":" hier-part [ "?" query ] [ "#" fragment ]
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hier-part = "//" authority path-abempty
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/ path-absolute
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/ path-rootless
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/ path-empty
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The scheme and path components are required, though the path may be
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empty (no characters). When authority is present, the path must
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either be empty or begin with a slash ("/") character. When
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authority is not present, the path cannot begin with two slash
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characters ("//"). These restrictions result in five different ABNF
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rules for a path (Section 3.3), only one of which will match any
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given URI reference.
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The following are two example URIs and their component parts:
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foo://example.com:8042/over/there?name=ferret#nose
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\_/ \______________/\_________/ \_________/ \__/
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| | | | |
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scheme authority path query fragment
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| _____________________|__
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/ \ / \
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urn:example:animal:ferret:nose
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Initially, this code supports only part of the first example - a scheme
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followed by an authority and a path. Queries and fragments are
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not supported. The APIs are modeled on the Gnome equivalent functions,
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though the code is NOT in any way based on thoat code.
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*/
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#ifndef OPAL_URI_H
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#define OPAL_URI_H
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#include "opal_config.h"
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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BEGIN_C_DECLS
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/**
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* Parse a uri to retrieve the scheme
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*
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* The caller is responsible for freeing the returned string.
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*/
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OPAL_DECLSPEC char *opal_uri_get_scheme(const char *uri) __opal_attribute_malloc__ __opal_attribute_warn_unused_result__;
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/**
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* Create a uri from a hostname and filename
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*
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* The caller is responsible for freeing the returned string.
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*/
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OPAL_DECLSPEC char *opal_filename_to_uri(const char *filename,
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const char *hostname) __opal_attribute_malloc__ __opal_attribute_warn_unused_result__;
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/**
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* Extract the filename (and hostname) from a uri
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*
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* @param uri : a uri describing a filename (escaped, encoded in ASCII).
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* @param hostname : Location to store hostname for the URI, or NULL.
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* If there is no hostname in the URI, NULL will be
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* stored in this location.
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* @retval a newly-allocated string holding the resulting filename, or NULL on an error.
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*
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* The caller is responsible for freeing the returned string.
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*/
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OPAL_DECLSPEC char *opal_filename_from_uri(const char *uri,
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char **hostname) __opal_attribute_malloc__ __opal_attribute_warn_unused_result__;
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END_C_DECLS
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#endif /* OPAL_URI_H */
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