143 lines
2.4 KiB
Lua
143 lines
2.4 KiB
Lua
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#! /usr/bin/env lua
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local me = arg[0]:gsub(".*[/\\](.*)$", "%1")
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local function err(fmt, ...)
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io.stderr:write(("%s: %s\n"):format(me, fmt:format(...)))
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os.exit(1)
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end
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local output
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local inputs = { }
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local lang
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local author
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local i = 1
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local function usage()
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print([[
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Usage: ]]..me..[[ [OPTIONS] FILE...
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Extract translatable strings from the given FILE(s).
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Available options:
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-h,--help Show this help screen and exit.
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-o,--output X Set output file (default: stdout).
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-a,--author X Set author.
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-l,--lang X Set language name.
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]])
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os.exit(0)
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end
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while i <= #arg do
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local a = arg[i]
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if (a == "-h") or (a == "--help") then
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usage()
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elseif (a == "-o") or (a == "--output") then
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i = i + 1
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if i > #arg then
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err("missing required argument to `%s'", a)
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end
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output = arg[i]
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elseif (a == "-a") or (a == "--author") then
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i = i + 1
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if i > #arg then
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err("missing required argument to `%s'", a)
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end
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author = arg[i]
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elseif (a == "-l") or (a == "--lang") then
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i = i + 1
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if i > #arg then
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err("missing required argument to `%s'", a)
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end
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lang = arg[i]
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elseif a:sub(1, 1) ~= "-" then
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table.insert(inputs, a)
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else
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err("unrecognized option `%s'", a)
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end
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i = i + 1
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end
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if #inputs == 0 then
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err("no input files")
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end
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local outfile = io.stdout
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local function printf(fmt, ...)
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outfile:write(fmt:format(...))
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end
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if output then
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local e
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outfile, e = io.open(output, "w")
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if not outfile then
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err("error opening file for writing: %s", e)
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end
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end
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if author or lang then
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outfile:write("\n")
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end
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if lang then
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printf("# Language: %s\n", lang)
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end
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if author then
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printf("# Author: %s\n", author)
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end
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if author or lang then
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outfile:write("\n")
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end
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local escapes = {
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["\n"] = "\\n",
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["="] = "\\=",
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["\\"] = "\\\\",
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}
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local function escape(s)
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return s:gsub("[\\\n=]", escapes)
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end
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local messages = { }
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for _, file in ipairs(inputs) do
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local infile, e = io.open(file, "r")
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if infile then
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for line in infile:lines() do
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for s in line:gmatch('S%("([^"]*)"') do
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table.insert(messages, s)
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end
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end
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infile:close()
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else
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io.stderr:write(("%s: WARNING: error opening file: %s\n"):format(me, e))
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end
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end
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table.sort(messages)
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local last_msg
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for _, msg in ipairs(messages) do
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if msg ~= last_msg then
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printf("%s =\n", escape(msg))
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end
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last_msg = msg
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end
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if output then
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outfile:close()
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end
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--[[
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TESTS:
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S("foo") S("bar")
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S("bar")
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S("foo")
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]]
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