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Add 'transformContent' option #32

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Add 'transformContent' option #32

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2696b30
Update index.js
AlexeyAndKartashov Apr 28, 2016
cef8991
Update index.js
AlexeyAndKartashov May 4, 2016
8b8cde6
Update index.js
AlexeyAndKartashov May 4, 2016
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51 changes: 33 additions & 18 deletions index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -225,31 +225,42 @@ var parseJSON = function parseJSON(data, filename) {
* Asynchronously walks the file list until a match is found. If
* no matches are found, calls the callback with an error
**/
var readFirstFile = function readFirstFile(uri, filenames, css, cb, examinedFiles) {
var readFirstFile = function readFirstFile(uri, filenames, options, cb, examinedFiles) {
var filename = filenames.shift();
examinedFiles = examinedFiles || [];
examinedFiles.push(filename);
fs.readFile(filename, function(err, data) {
if (err) {
if (filenames.length) {
readFirstFile(uri, filenames, css, cb, examinedFiles);
fs.readFile(filename, (function (filename) {
return function(err, data) {
if (err) {
if (filenames.length) {
readFirstFile(uri, filenames, options, cb, examinedFiles);
}
else {
cb(new Error('Could not import `' + uri + '` from any of the following locations:\n ' + examinedFiles.join('\n ')));
}
}
else {
cb(new Error('Could not import `' + uri + '` from any of the following locations:\n ' + examinedFiles.join('\n ')));
}
}
else {
if ([ '.js', '.json', '.yml', '.yaml' ].indexOf(path.extname(filename)) !== -1) {
data = parseJSON(data, filename);
if ([ '.js', '.json', '.yml', '.yaml' ].indexOf(path.extname(filename)) !== -1) {
data = parseJSON(data, filename);
}

var contents = data.toString();
var tmp = options.importOnce.transformContent(filename, contents);
if (typeof tmp != 'undefined') {
contents = tmp;
}

cb(null, {
'contents': contents,
'file': filename
});
}
cb(null, {
'contents': data.toString(),
'file': filename
});
}
});
};
})(filename));
};

var noop = function noop () {};

// This is a bootstrap function for calling readFirstFile.
var readAbstractFile = function readAbstractFile(uri, abstractName, cb) {
var gfn = getFileNames.bind(this),
Expand All @@ -267,7 +278,7 @@ var readAbstractFile = function readAbstractFile(uri, abstractName, cb) {
files = files.concat(gbn(uri));
}

readFirstFile(uri, files, css, cb);
readFirstFile(uri, files, this.options, cb);
};

/**
Expand Down Expand Up @@ -299,6 +310,10 @@ var importer = function importer(uri, prev, done) {
this.options.importOnce.css = false;
}

if (typeof this.options.importOnce.transformContent != 'function') {
this.options.importOnce.transformContent = noop;
}

// Create an import cache if it doesn't exist
if (!this._importOnceCache) {
this._importOnceCache = {};
Expand Down