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authorErlang/OTP <[email protected]>2009-11-20 14:54:40 +0000
committerErlang/OTP <[email protected]>2009-11-20 14:54:40 +0000
commit84adefa331c4159d432d22840663c38f155cd4c1 (patch)
treebff9a9c66adda4df2106dfd0e5c053ab182a12bd /lib/inets/src/http_client/http_uri.erl
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The R13B03 release.OTP_R13B03
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+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2006-2009. All Rights Reserved.
+%%
+%% The contents of this file are subject to the Erlang Public License,
+%% Version 1.1, (the "License"); you may not use this file except in
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved online at http://www.erlang.org/.
+%%
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%%
+%% %CopyrightEnd%
+%%
+%%
+
+-module(http_uri).
+
+-export([parse/1]).
+
+%%%=========================================================================
+%%% API
+%%%=========================================================================
+parse(AbsURI) ->
+ case parse_scheme(AbsURI) of
+ {error, Reason} ->
+ {error, Reason};
+ {Scheme, Rest} ->
+ case (catch parse_uri_rest(Scheme, Rest)) of
+ {UserInfo, Host, Port, Path, Query} ->
+ {Scheme, UserInfo, Host, Port, Path, Query};
+ _ ->
+ {error, {malformed_url, AbsURI}}
+ end
+ end.
+
+%%%========================================================================
+%%% Internal functions
+%%%========================================================================
+parse_scheme(AbsURI) ->
+ case split_uri(AbsURI, ":", {error, no_scheme}, 1, 1) of
+ {error, no_scheme} ->
+ {error, no_scheme};
+ {StrScheme, Rest} ->
+ case list_to_atom(http_util:to_lower(StrScheme)) of
+ Scheme when Scheme == http; Scheme == https ->
+ {Scheme, Rest};
+ Scheme ->
+ {error, {not_supported_scheme, Scheme}}
+ end
+ end.
+
+parse_uri_rest(Scheme, "//" ++ URIPart) ->
+
+ {Authority, PathQuery} =
+ case split_uri(URIPart, "/", URIPart, 1, 0) of
+ Split = {_, _} ->
+ Split;
+ URIPart ->
+ case split_uri(URIPart, "\\?", URIPart, 1, 0) of
+ Split = {_, _} ->
+ Split;
+ URIPart ->
+ {URIPart,""}
+ end
+ end,
+
+ {UserInfo, HostPort} = split_uri(Authority, "@", {"", Authority}, 1, 1),
+ {Host, Port} = parse_host_port(Scheme, HostPort),
+ {Path, Query} = parse_path_query(PathQuery),
+ {UserInfo, Host, Port, Path, Query}.
+
+
+parse_path_query(PathQuery) ->
+ {Path, Query} = split_uri(PathQuery, "\\?", {PathQuery, ""}, 1, 0),
+ {path(Path), Query}.
+
+
+parse_host_port(Scheme,"[" ++ HostPort) -> %ipv6
+ DefaultPort = default_port(Scheme),
+ {Host, ColonPort} = split_uri(HostPort, "\\]", {HostPort, ""}, 1, 1),
+ {_, Port} = split_uri(ColonPort, ":", {"", DefaultPort}, 0, 1),
+ {Host, int_port(Port)};
+
+parse_host_port(Scheme, HostPort) ->
+ DefaultPort = default_port(Scheme),
+ {Host, Port} = split_uri(HostPort, ":", {HostPort, DefaultPort}, 1, 1),
+ {Host, int_port(Port)}.
+
+split_uri(UriPart, SplitChar, NoMatchResult, SkipLeft, SkipRight) ->
+ case inets_regexp:first_match(UriPart, SplitChar) of
+ {match, Match, _} ->
+ {string:substr(UriPart, 1, Match - SkipLeft),
+ string:substr(UriPart, Match + SkipRight, length(UriPart))};
+ nomatch ->
+ NoMatchResult
+ end.
+
+default_port(http) ->
+ 80;
+default_port(https) ->
+ 443.
+
+int_port(Port) when is_integer(Port) ->
+ Port;
+int_port(Port) when is_list(Port) ->
+ list_to_integer(Port).
+
+path("") ->
+ "/";
+path(Path) ->
+ Path.