greenlock.js-ARCHIVED/lib/pyconf.js

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'use strict';
var fs = require('fs');
var sfs = require('safe-replace').create();
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function snakeCase(key) {
if ('tlsSni01Port' === key) {
return 'tls_sni_01_port';
}
/*
else if ('http01Port' === key) {
return 'http01-port';
}
*/
else {
return key.replace(/([A-Z])/g, '_$1').toLowerCase();
}
}
function uc(match, c) {
return c.toUpperCase();
}
function camelCase(key) {
return key.replace(/_([a-z0-9])/g, uc);
}
function parsePythonConf(str, cb) {
var keys = {};
var obj = {};
var lines = str.split('\n');
lines.forEach(function (line, i) {
line = line.replace(/#.*/, '').trim();
if (!line) { return; }
var parts = line.trim().split('=');
var pykey = parts.shift().trim();
var key = camelCase(pykey);
var val = parts.join('=').trim();
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if ('True' === val) {
val = true;
}
else if ('False' === val) {
val = false;
}
else if ('None' === val) {
val = null;
}
else if (/,/.test(val) && !/^"[^"]*"$/.test(val)) {
val = val.split(',');
}
else if (/^[0-9]+$/.test(val)) {
val = parseInt(val, 10);
}
obj[key] = val;
if ('undefined' !== typeof keys[key]) {
console.warn("unexpected duplicate key '" + key + "': '" + val + "'");
}
keys[key] = i;
});
// we want to be able to rewrite the file with comments, etc
obj.__keys = keys;
obj.__lines = lines;
cb(null, obj);
}
function toPyVal(val) {
if (null === val) {
return 'None';
}
else if (true === val) {
return 'True';
}
else if (false === val) {
return 'False';
}
else if ('string' === typeof val) {
return val;
}
else if ('number' === typeof val) {
return val;
}
else if (Array.isArray(val)) {
return val.join(',');
}
return val && JSON.stringify(val);
}
function stringifyPythonConf(obj, cb) {
var endline;
// nix the final newline
if (!obj.__lines[obj.__lines.length - 1].trim()) {
endline = obj.__lines.pop();
}
Object.keys(obj).forEach(function (key) {
if ('__' === key.slice(0, 2)) {
return;
}
var pykey = snakeCase(key);
var pyval = toPyVal(obj[key]);
var num = obj.__keys[key];
var comment = '';
if ('number' !== typeof num) {
obj.__lines.push(pykey + ' = ' + pyval);
return;
}
// restore comments
if (-1 !== obj.__lines[num].indexOf('#')) {
comment = obj.__lines[num].replace(/.*?(\s*#.*)/, '$1');
}
if ('[' === pykey[0]) {
return;
}
if ('undefined' === typeof pyval) {
obj.__lines[num] = "___DELETE_ME___";
}
});
obj.__lines = obj.__lines.filter(function (line) {
if ("___DELETE_ME___" !== line) {
return true;
}
});
if ('string' === typeof endline) {
obj.__lines.push(endline);
}
cb(null, obj.__lines.join('\n'));
}
function writePythonConfFile(pathname, obj, cb) {
// TODO re-read file?
stringifyPythonConf(obj, function (err, text) {
sfs.writeFile(pathname, text, 'utf8', function (err) {
if (err) {
cb(err);
return;
}
cb();
});
});
}
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function parsePythonConfFile(pathname, cb) {
fs.readFile(pathname, 'utf8', function (err, text) {
if (err) {
cb(err);
return;
}
parsePythonConf(text, cb);
});
}
module.exports.parse = parsePythonConf;
module.exports.readFile = parsePythonConfFile;
module.exports.stringify = stringifyPythonConf;
module.exports.writeFile = writePythonConfFile;
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parsePythonConfFile('examples/renewal-example.com.conf', function (err, obj) {
if (err) {
console.error(err.stack);
return;
}
writePythonConfFile('examples/renewal-example.com.conf.new', obj, function (err, obj) {
if (err) {
console.error(err.stack);
return;
}
console.log(obj);
});
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});