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+-- main.tlu: default command-line interface of texdoc
+--
+-- Manuel Pégourié-Gonnard, GPLv3, see texdoclib.tlu for details
+
+-- load texdoclib (kpse initialized by the wrapper)
+local texdoc = require('texdoc.texdoclib')
+
+-- exit codes
+local exit_ok = 0
+local exit_error = 1 -- apparently hard-coded in Lua
+local exit_usage = 2
+
+-- action command-line options, not treated by setup_config_and_alias
+local action_help = [[
+ -h, --help Print this help message.
+ -V, --version Print the version number.
+ -f, --files Print the list of configuration files used.
+ --just-view file Display file, given with full path (no searching).]]
+local action_opts = {
+ ['-h'] = 'help',
+ ['--help'] = 'help',
+ ['-V'] = 'version',
+ ['--version'] = 'version',
+ ['-f'] = 'files',
+ ['--files'] = 'files',
+ ['--just-view'] = 'view',
+}
+
+-- detect action options, but do not act now (some need setup_config)
+local action
+if arg[1] then
+ action = action_opts[arg[1]]
+ if action then table.remove(arg, 1) end
+end
+
+-- get configuration
+if not texdoc.setup_config_and_alias(arg) then
+ os.exit(exit_usage)
+end
+
+-- handle action options
+if action == 'help' then
+ texdoc.print_usage(action_help)
+ os.exit(exit_ok)
+elseif action == 'version' then
+ print(texdoc.const.progname .. ' ' .. texdoc.const.version)
+ print('\n' .. texdoc.const.copyright_msg)
+ os.exit(exit_ok)
+elseif action =='files' then
+ print(texdoc.const.fullname .. ' ' .. texdoc.const.version)
+ texdoc.show_config_files(print, true)
+ os.exit(exit_ok)
+elseif action == 'view' then
+ local ok = texdoc.view_file(arg[1])
+ os.exit(ok and exit_ok or exit_error)
+end
+
+-- make sure we actually have argument(s)
+if not arg[1] then
+ texdoc.print_usage()
+ os.exit(exit_usage)
+end
+
+-- initialise databases
+texdoc.init_databases()
+
+-- main loop
+local docname
+for _, docname in ipairs(arg) do
+ -- do we have more then one argument?
+ local multiarg = not not arg[2]
+ -- get results
+ local doclist = texdoc.get_doclist(docname)
+ -- deliver results to the user
+ texdoc.deliver_results(docname, doclist, multiarg)
+end
+
+-- the end
+os.exit(exit_ok)