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monic.js
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monic.js
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/*!
* Monic
* https://github.com/MonicBuilder/Monic
*
* Released under the MIT license
* https://github.com/MonicBuilder/Monic/blob/master/LICENSE
*/
const
sourceMapFile = require('source-map'),
SourceMapGenerator = sourceMapFile.SourceMapGenerator;
const
Parser = require('./dist/parser'),
path = require('path'),
fs = require('fs'),
async = require('async'),
mkdirp = require('mkdirp'),
ok = require('okay'),
promisify = require('promisify-any'),
assign = require('object-assign');
/** @type {!Array} */
exports.VERSION = [2, 3, 1];
/**
* Builds a file
*
* @param {string} file - file path
* @param {Object=} [opt_params] - additional parameters
* @param {?string=} [opt_params.cwd] - path to the working directory (by default, module.parent)
* @param {Object=} [opt_params.flags] - map of Monic flags
* @param {Object=} [opt_params.labels] - map of Monic labels
* @param {?string=} [opt_params.content] - file text
* @param {?string=} [opt_params.eol] - EOL symbol
* @param {Array<function(this:Parser, string, string, function(Error=, string=)=)>=} [opt_params.replacers] - array of transform functions
* @param {?boolean=} [opt_params.saveFiles=false] - if is true, then generated files will be saved
* @param {?string=} [opt_params.mode='0777'] - mode for any folders that need to be created for the output folder
* @param {?string=} [opt_params.file] - path to the generated file
* @param {(boolean|string|null)=} [opt_params.sourceMaps=false] - if is true or 'inline', then will be generated a source map
* @param {Object=} [opt_params.inputSourceMap] - base source map object for the output source map
* @param {?string=} [opt_params.sourceMapFile] - path to the generated source map
* @param {?string=} [opt_params.sourceRoot] - root for all URLs in the generated source map
* @param {?function(Error, string=, {map: !Object, decl: string, url: string, isExternal: boolean}=)=} [opt_callback] - callback function
* (if not declared, then will be used Promise API)
*/
exports.compile = function (file, opt_params, opt_callback) {
if (opt_callback) {
return compile(file, opt_params, opt_callback);
}
return promisify(compile, arguments.length - 1)(file, opt_params);
};
function compile(file, params, callback) {
file = url(file);
params = assign({
flags: {},
labels: {},
eol: '\n',
mode: '0777'
}, params);
const
sourceMaps = params.sourceMaps,
sourceRoot = url(params.sourceRoot),
fileToSave = params.file ? url(params.file) : file;
const
sourceMapFile = sourceMaps && (params.sourceMapFile ? url(params.sourceMapFile) : fileToSave + '.map'),
externalSourceMap = sourceMaps && sourceMaps !== 'inline';
const finish = ok(callback, function (fileStructure) {
const map = sourceMaps ?
new SourceMapGenerator({
file: Parser.getRelativePath(path.dirname(sourceMapFile), fileToSave),
sourceRoot: sourceRoot
}) : undefined;
const
tasks = [];
var
result = fileStructure.compile(params.labels, params.flags, map),
sourceMapDecl,
sourceMapUrl;
if (sourceMaps) {
sourceMapDecl = '//# sourceMappingURL=';
if (externalSourceMap) {
sourceMapUrl = Parser.getRelativePath(path.dirname(fileToSave), sourceMapFile);
} else {
sourceMapUrl = 'data:application\/json;base64,' + new Buffer(map.toString()).toString('base64');
result += sourceMapDecl + sourceMapUrl;
}
}
if (params.saveFiles) {
if (externalSourceMap) {
tasks.push(function (cb) {
mkdirp(path.dirname(sourceMapFile), {mode: params.mode}, ok(cb, function () {
fs.writeFile(sourceMapFile, map.toString(), cb);
}));
});
}
if (params.file) {
tasks.push(function (cb) {
if (externalSourceMap) {
result += sourceMapDecl + sourceMapUrl;
}
mkdirp(path.dirname(fileToSave), {mode: params.mode}, ok(cb, function () {
fs.writeFile(fileToSave, result, cb);
}));
});
}
}
async.parallel(tasks, function () {
callback(null, result, map && {
map: JSON.parse(map.toString()),
decl: sourceMapDecl,
url: sourceMapUrl,
isExternal: externalSourceMap
});
});
});
function url(url) {
if (!url) {
return undefined;
}
if (params.cwd) {
url = path.resolve(params.cwd, url);
} else {
url = path.resolve(module.parent ? path.dirname(module.parent.filename) : '', url);
}
return Parser.normalizePath(url);
}
const parser = new Parser({
eol: params.eol,
replacers: params.replacers,
flags: params.flags,
sourceMaps: Boolean(sourceMaps),
sourceRoot: sourceRoot,
inputSourceMap: params.inputSourceMap
});
Parser.cursor = 1;
Parser.current = null;
if (params.content != null) {
parser.testFile(file, ok(callback, function (file) {
parser.parse(file, String(params.content), finish);
}));
} else {
parser.parseFile(file, finish);
}
}