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266 rader
12 KiB
266 rader
12 KiB
%% -*- erlang-indent-level: 4;indent-tabs-mode: nil -*-
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%% ex: ts=4 sw=4 et
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-module(rebar_git_resource).
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-behaviour(rebar_resource).
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-export([lock/2
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,download/3
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,needs_update/2
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,make_vsn/1]).
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-include("rebar.hrl").
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%% Regex used for parsing scp style remote url
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-define(SCP_PATTERN, "\\A(?<username>[^@]+)@(?<host>[^:]+):(?<path>.+)\\z").
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lock(AppDir, {git, Url, _}) ->
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lock(AppDir, {git, Url});
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lock(AppDir, {git, Url}) ->
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AbortMsg = lists:flatten(io_lib:format("Locking of git dependency failed in ~ts", [AppDir])),
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Dir = rebar_utils:escape_double_quotes(AppDir),
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{ok, VsnString} =
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case os:type() of
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{win32, _} ->
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rebar_utils:sh("git --git-dir=\"" ++ Dir ++ "/.git\" --work-tree=\"" ++ Dir ++ "\" rev-parse --verify HEAD",
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[{use_stdout, false}, {debug_abort_on_error, AbortMsg}]);
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_ ->
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rebar_utils:sh("git --git-dir=\"" ++ Dir ++ "/.git\" rev-parse --verify HEAD",
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[{use_stdout, false}, {debug_abort_on_error, AbortMsg}])
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end,
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Ref = string:strip(VsnString, both, $\n),
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{git, Url, {ref, Ref}}.
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%% Return true if either the git url or tag/branch/ref is not the same as the currently
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%% checked out git repo for the dep
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needs_update(Dir, {git, Url, {tag, Tag}}) ->
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{ok, Current} = rebar_utils:sh(?FMT("git describe --tags --exact-match", []),
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[{cd, Dir}]),
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Current1 = string:strip(string:strip(Current, both, $\n), both, $\r),
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?DEBUG("Comparing git tag ~ts with ~ts", [Tag, Current1]),
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not ((Current1 =:= Tag) andalso compare_url(Dir, Url));
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needs_update(Dir, {git, Url, {branch, Branch}}) ->
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%% Fetch remote so we can check if the branch has changed
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SafeBranch = rebar_utils:escape_chars(Branch),
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{ok, _} = rebar_utils:sh(?FMT("git fetch origin ~ts", [SafeBranch]),
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[{cd, Dir}]),
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%% Check for new commits to origin/Branch
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{ok, Current} = rebar_utils:sh(?FMT("git log HEAD..origin/~ts --oneline", [SafeBranch]),
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[{cd, Dir}]),
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?DEBUG("Checking git branch ~ts for updates", [Branch]),
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not ((Current =:= []) andalso compare_url(Dir, Url));
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needs_update(Dir, {git, Url, "master"}) ->
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needs_update(Dir, {git, Url, {branch, "master"}});
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needs_update(Dir, {git, _, Ref}) ->
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{ok, Current} = rebar_utils:sh(?FMT("git rev-parse --short=7 -q HEAD", []),
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[{cd, Dir}]),
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Current1 = string:strip(string:strip(Current, both, $\n), both, $\r),
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Ref2 = case Ref of
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{ref, Ref1} ->
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Length = length(Current1),
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case Length >= 7 of
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true -> lists:sublist(Ref1, Length);
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false -> Ref1
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end;
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_ ->
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Ref
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end,
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?DEBUG("Comparing git ref ~ts with ~ts", [Ref2, Current1]),
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(Current1 =/= Ref2).
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compare_url(Dir, Url) ->
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{ok, CurrentUrl} = rebar_utils:sh(?FMT("git config --get remote.origin.url", []),
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[{cd, Dir}]),
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CurrentUrl1 = string:strip(string:strip(CurrentUrl, both, $\n), both, $\r),
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{ok, ParsedUrl} = parse_git_url(Url),
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{ok, ParsedCurrentUrl} = parse_git_url(CurrentUrl1),
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?DEBUG("Comparing git url ~p with ~p", [ParsedUrl, ParsedCurrentUrl]),
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ParsedCurrentUrl =:= ParsedUrl.
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parse_git_url(Url) ->
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%% Checks for standard scp style git remote
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case re:run(Url, ?SCP_PATTERN, [{capture, [host, path], list}, unicode]) of
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{match, [Host, Path]} ->
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{ok, {Host, filename:rootname(Path, ".git")}};
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nomatch ->
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parse_git_url(not_scp, Url)
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end.
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parse_git_url(not_scp, Url) ->
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UriOpts = [{scheme_defaults, [{git, 9418} | http_uri:scheme_defaults()]}],
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case http_uri:parse(Url, UriOpts) of
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{ok, {_Scheme, _User, Host, _Port, Path, _Query}} ->
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{ok, {Host, filename:rootname(Path, ".git")}};
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{error, Reason} ->
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{error, Reason}
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end.
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download(Dir, {git, Url}, State) ->
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?WARN("WARNING: It is recommended to use {branch, Name}, {tag, Tag} or {ref, Ref}, otherwise updating the dep may not work as expected.", []),
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download(Dir, {git, Url, {branch, "master"}}, State);
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download(Dir, {git, Url, ""}, State) ->
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?WARN("WARNING: It is recommended to use {branch, Name}, {tag, Tag} or {ref, Ref}, otherwise updating the dep may not work as expected.", []),
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download(Dir, {git, Url, {branch, "master"}}, State);
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download(Dir, {git, Url, {branch, Branch}}, _State) ->
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ok = filelib:ensure_dir(Dir),
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git_clone(branch, git_vsn(), Url, Dir, Branch);
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download(Dir, {git, Url, {tag, Tag}}, _State) ->
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ok = filelib:ensure_dir(Dir),
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git_clone(tag, git_vsn(), Url, Dir, Tag);
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download(Dir, {git, Url, {ref, Ref}}, _State) ->
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ok = filelib:ensure_dir(Dir),
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git_clone(ref, git_vsn(), Url, Dir, Ref);
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download(Dir, {git, Url, Rev}, _State) ->
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?WARN("WARNING: It is recommended to use {branch, Name}, {tag, Tag} or {ref, Ref}, otherwise updating the dep may not work as expected.", []),
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ok = filelib:ensure_dir(Dir),
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git_clone(rev, git_vsn(), Url, Dir, Rev).
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%% Use different git clone commands depending on git --version
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git_clone(branch,Vsn,Url,Dir,Branch) when Vsn >= {1,7,10}; Vsn =:= undefined ->
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rebar_utils:sh(?FMT("git clone ~ts ~ts -b ~ts --single-branch",
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[rebar_utils:escape_chars(Url),
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rebar_utils:escape_chars(filename:basename(Dir)),
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rebar_utils:escape_chars(Branch)]),
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[{cd, filename:dirname(Dir)}]);
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git_clone(branch,_Vsn,Url,Dir,Branch) ->
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rebar_utils:sh(?FMT("git clone ~ts ~ts -b ~ts",
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[rebar_utils:escape_chars(Url),
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rebar_utils:escape_chars(filename:basename(Dir)),
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rebar_utils:escape_chars(Branch)]),
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[{cd, filename:dirname(Dir)}]);
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git_clone(tag,Vsn,Url,Dir,Tag) when Vsn >= {1,7,10}; Vsn =:= undefined ->
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rebar_utils:sh(?FMT("git clone ~ts ~ts -b ~ts --single-branch",
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[rebar_utils:escape_chars(Url),
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rebar_utils:escape_chars(filename:basename(Dir)),
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rebar_utils:escape_chars(Tag)]),
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[{cd, filename:dirname(Dir)}]);
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git_clone(tag,_Vsn,Url,Dir,Tag) ->
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rebar_utils:sh(?FMT("git clone ~ts ~ts -b ~ts",
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[rebar_utils:escape_chars(Url),
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rebar_utils:escape_chars(filename:basename(Dir)),
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rebar_utils:escape_chars(Tag)]),
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[{cd, filename:dirname(Dir)}]);
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git_clone(ref,_Vsn,Url,Dir,Ref) ->
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rebar_utils:sh(?FMT("git clone -n ~ts ~ts",
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[rebar_utils:escape_chars(Url),
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rebar_utils:escape_chars(filename:basename(Dir))]),
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[{cd, filename:dirname(Dir)}]),
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rebar_utils:sh(?FMT("git checkout -q ~ts", [Ref]), [{cd, Dir}]);
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git_clone(rev,_Vsn,Url,Dir,Rev) ->
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rebar_utils:sh(?FMT("git clone -n ~ts ~ts",
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[rebar_utils:escape_chars(Url),
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rebar_utils:escape_chars(filename:basename(Dir))]),
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[{cd, filename:dirname(Dir)}]),
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rebar_utils:sh(?FMT("git checkout -q ~ts", [rebar_utils:escape_chars(Rev)]),
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[{cd, Dir}]).
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git_vsn() ->
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case application:get_env(rebar, git_vsn) of
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{ok, Vsn} -> Vsn;
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undefined ->
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Vsn = git_vsn_fetch(),
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application:set_env(rebar, git_vsn, Vsn),
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Vsn
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end.
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git_vsn_fetch() ->
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case rebar_utils:sh("git --version",[]) of
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{ok, VsnStr} ->
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case re:run(VsnStr, "git version\\h+(\\d)\\.(\\d)\\.(\\d).*", [{capture,[1,2,3],list}, unicode]) of
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{match,[Maj,Min,Patch]} ->
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{list_to_integer(Maj),
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list_to_integer(Min),
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list_to_integer(Patch)};
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nomatch ->
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undefined
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end;
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{error, _} ->
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undefined
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end.
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make_vsn(Dir) ->
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case collect_default_refcount(Dir) of
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Vsn={plain, _} ->
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Vsn;
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{Vsn, RawRef, RawCount} ->
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{plain, build_vsn_string(Vsn, RawRef, RawCount)}
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end.
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%% Internal functions
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collect_default_refcount(Dir) ->
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%% Get the tag timestamp and minimal ref from the system. The
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%% timestamp is really important from an ordering perspective.
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case rebar_utils:sh("git log -n 1 --pretty=format:\"%h\n\" ",
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[{use_stdout, false},
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return_on_error,
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{cd, Dir}]) of
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{error, _} ->
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?WARN("Getting log of git dependency failed in ~ts. Falling back to version 0.0.0", [rebar_dir:get_cwd()]),
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{plain, "0.0.0"};
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{ok, String} ->
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RawRef = string:strip(String, both, $\n),
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{Tag, TagVsn} = parse_tags(Dir),
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{ok, RawCount} =
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case Tag of
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undefined ->
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AbortMsg2 = "Getting rev-list of git depedency failed in " ++ Dir,
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{ok, PatchLines} = rebar_utils:sh("git rev-list HEAD",
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[{use_stdout, false},
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{cd, Dir},
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{debug_abort_on_error, AbortMsg2}]),
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rebar_utils:line_count(PatchLines);
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_ ->
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get_patch_count(Dir, Tag)
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end,
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{TagVsn, RawRef, RawCount}
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end.
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build_vsn_string(Vsn, RawRef, Count) ->
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%% Cleanup the tag and the Ref information. Basically leading 'v's and
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%% whitespace needs to go away.
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RefTag = [".ref", re:replace(RawRef, "\\s", "", [global, unicode])],
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%% Create the valid [semver](http://semver.org) version from the tag
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case Count of
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0 ->
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rebar_utils:to_list(Vsn);
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_ ->
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rebar_utils:to_list([Vsn, "+build.", integer_to_list(Count), RefTag])
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end.
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get_patch_count(Dir, RawRef) ->
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AbortMsg = "Getting rev-list of git dep failed in " ++ Dir,
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Ref = re:replace(RawRef, "\\s", "", [global, unicode]),
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Cmd = io_lib:format("git rev-list ~ts..HEAD",
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[rebar_utils:escape_chars(Ref)]),
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{ok, PatchLines} = rebar_utils:sh(Cmd,
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[{use_stdout, false},
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{cd, Dir},
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{debug_abort_on_error, AbortMsg}]),
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rebar_utils:line_count(PatchLines).
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parse_tags(Dir) ->
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%% Don't abort on error, we want the bad return to be turned into 0.0.0
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case rebar_utils:sh("git log --oneline --no-walk --tags --decorate",
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[{use_stdout, false}, return_on_error, {cd, Dir}]) of
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{error, _} ->
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{undefined, "0.0.0"};
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{ok, Line} ->
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case re:run(Line, "(\\(|\\s)(HEAD[^,]*,\\s)tag:\\s(v?([^,\\)]+))", [{capture, [3, 4], list}, unicode]) of
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{match,[Tag, Vsn]} ->
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{Tag, Vsn};
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nomatch ->
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case rebar_utils:sh("git describe --tags --abbrev=0",
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[{use_stdout, false}, return_on_error, {cd, Dir}]) of
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{error, _} ->
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{undefined, "0.0.0"};
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{ok, LatestVsn} ->
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{undefined, string:strip(LatestVsn, both, $\n)}
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end
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end
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end.
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