Created
February 23, 2014 18:21
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-module(ziton). | |
-export([fetch/2]). | |
-export([fetch/3]). | |
%% download content at URI to Path | |
fetch(URI, Path) -> | |
ensure_deps_started(), | |
case httpc:request(URI) of | |
Error={error, _} -> | |
Error; | |
{ok, {{_, Status, _}, _, Body}} when Status =:= 200; Status =:= 304 -> | |
file:make_dir(filename:dirname(Path)), | |
file:write_file(Path, Body, [raw, binary]); | |
{ok, {{_, Status, _}, _, _}} -> | |
{error, Status} | |
end. | |
%% clone git/hg/svn repository | |
fetch(SCM, URI, Path) when SCM =:= git; SCM =:= hg -> | |
exec(SCM, ["clone", URI, Path]); | |
fetch(svn, URI, Path) -> | |
exec("svn", ["checkout", URI, Path]). | |
%% execute a shell command | |
exec(Cmd, Opts) when is_atom(Cmd) -> | |
exec(atom_to_list(Cmd), Opts); | |
exec(Cmd, Opts) -> | |
Opts1 = [" " ++ X || X <- Opts], | |
os:cmd(Cmd ++ lists:concat(Opts1)). | |
ensure_deps_started() -> | |
ensure_started(crypto), | |
ensure_started(asn1), | |
ensure_started(public_key), | |
ensure_started(ssl), | |
ensure_started(inets). | |
ensure_started(App) -> | |
case application:start(App) of | |
ok -> | |
ok; | |
{error, {already_started, App}} -> | |
ok | |
end. |
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