TekOS/github.app.lua at master · Reanmachine/TekOS · GitHub

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-- Reanmachine TekOS
-- APP: Github

-- Constants
asset_type_app="app"
asset_type_lib="lib"

github_content_path="https://raw.githubusercontent.com"

-- Functions

functionget_asset_remote_path(name, asset_type)
ifasset_type==asset_type_appthen
returnname..".app.lua"
end

ifasset_type==asset_type_libthen
returnname..".lib.lua"
end

error("Unknown asset type: "..asset_type)
end

functionget_asset_target_path(name, asset_type)
ifasset_type==asset_type_appthen
return"/"..name
end

ifasset_type==asset_type_libthen
return"/libs/"..name
end

error("Unknown asset type: "..asset_type)
end

---
-- Downloads a file from a github project
-- @param project The project identity (eg Reanmachine/something)
-- @param revision The revision to get (if none, will use 'master')
-- @param file The file to download (relative path from project root)
-- @param dest The destination file to download it into locally
functionget_github_resource(project, revision, file)

ifnotprojectthenerror("project cannot be nil") end
iftype(project) ~="string" thenerror("project must be a string") end

-- Default the revision to master
ifnotrevisionthen
revision="master"
end

localproject_content_path=github_content_path.."/"..project
localproject_revision_path=project_content_path.."/"..revision
localproject_file_path=project_revision_path.."/"..file

localweb_result=http.get(project_file_path)

ifnotweb_resultthen
return {found=false, code=0, data=""}
end

localfound=web_result.getResponseCode() ==200

return {found=found, code=web_result.getResponseCode(), data=web_result.readAll()}

end

functionget_asset(project, revision, name, asset_type)

localtarget_file=get_asset_remote_path(name, asset_type)
localresult=get_github_resource(project, revision, target_file)

ifnotresultornotresult.foundthen
localreason=nil

ifresult.code==404thenreason="File not Found" end
ifresult.code==403thenreason="Forbidden" end

localmessage=string.format(
"Unable to Retrieve %s '%s' from repository '%s'",
asset_type,
name,
project)

ifnotreasonthen
print(message..": "..reason)
else
print(message)
end

returnfalse
end

localtarget_path=get_asset_target_path(name, asset_type)
localtarget_output=fs.open(target_path, "w")
target_output.write(result.data)
target_output.flush()
target_output.close()

print(string.format(
"%s '%s' downloaded successfully to '%s'",
asset_type,
name,
target_path))

end

functionusage()
print("github <project> <type> <name>")
print(" <project> - The GitHub User/Repository path of the project. (eg: mojang/minecraft)")
print(" <type> - 'app' or 'lib' to denote package type.")
print(" <name> - The name relative to the root of the project.")
end

-- Application Logic

localarg= { ... }

if#arg<3then
print("ERROR: not enough arugments")
usage()
exit()
end

localproject=arg[1]
localasset_type=arg[2]
localasset_name=arg[3]

ifasset_type==asset_type_appthen
print(string.format("Downloading App '%s' from '%s'...", asset_name, project))
elseifasset_type==asset_type_libthen
print(string.format("Downloading Lib '%s' from '%s'...", asset_name, project))
else
print("ERROR: invalid asset type '"..asset_type.."'")
usage()
exit()
end

get_asset(project, nil, asset_name, asset_type)