diff options
Diffstat (limited to '')
| -rw-r--r-- | lualib/rspamadm/template.lua | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/lualib/rspamadm/template.lua b/lualib/rspamadm/template.lua new file mode 100644 index 0000000..ca1779a --- /dev/null +++ b/lualib/rspamadm/template.lua @@ -0,0 +1,131 @@ +--[[ +Copyright (c) 2022, Vsevolod Stakhov <vsevolod@rspamd.com> + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +]]-- + +local argparse = require "argparse" + + +-- Define command line options +local parser = argparse() + :name "rspamadm template" + :description "Apply jinja templates for strings/files" + :help_description_margin(30) +parser:argument "file" + :description "File to process" + :argname "<file>" + :args "*" + +parser:flag "-n --no-vars" + :description "Don't add Rspamd internal variables" +parser:option "-e --env" + :description "Load additional environment vars from specific file (name=value)" + :argname "<filename>" + :count "*" +parser:option "-l --lua-env" + :description "Load additional environment vars from specific file (lua source)" + :argname "<filename>" + :count "*" +parser:mutex( + parser:option "-s --suffix" + :description "Store files with the new suffix" + :argname "<suffix>", + parser:flag "-i --inplace" + :description "Replace input file(s)" +) + +local lua_util = require "lua_util" + +local function set_env(opts, env) + if opts.env then + for _, fname in ipairs(opts.env) do + for kv in assert(io.open(fname)):lines() do + if not kv:match('%s*#.*') then + local k, v = kv:match('([^=%s]+)%s*=%s*(.+)') + + if k and v then + env[k] = v + else + io.write(string.format('invalid env line in %s: %s\n', fname, kv)) + end + end + end + end + end + + if opts.lua_env then + for _, fname in ipairs(opts.env) do + local ret, res_or_err = pcall(loadfile(fname)) + + if not ret then + io.write(string.format('cannot load %s: %s\n', fname, res_or_err)) + else + if type(res_or_err) == 'table' then + for k, v in pairs(res_or_err) do + env[k] = lua_util.deepcopy(v) + end + else + io.write(string.format('cannot load %s: not a table\n', fname)) + end + end + end + end +end + +local function read_file(file) + local content + if file == '-' then + content = io.read("*all") + else + local f = assert(io.open(file, "rb")) + content = f:read("*all") + f:close() + end + return content +end + +local function handler(args) + local opts = parser:parse(args) + local env = {} + set_env(opts, env) + + if not opts.file or #opts.file == 0 then + opts.file = { '-' } + end + for _, fname in ipairs(opts.file) do + local content = read_file(fname) + local res = lua_util.jinja_template(content, env, opts.no_vars) + + if opts.inplace then + local nfile = string.format('%s.new', fname) + local out = assert(io.open(nfile, 'w')) + out:write(content) + out:close() + os.rename(nfile, fname) + elseif opts.suffix then + local nfile = string.format('%s.%s', opts.suffix) + local out = assert(io.open(nfile, 'w')) + out:write(content) + out:close() + else + io.write(res) + end + end +end + +return { + handler = handler, + description = parser._description, + name = 'template' +}
\ No newline at end of file |