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'use strict';
var _path = require('path');
var isAbsolute = require('path-is-absolute');
var isUrl = require('is-url');
function SourceAdjuster (sourceRoot, path, sourceMap) {
this.path = path;
this.sourceRoot = sourceRoot;
if (typeof sourceMap === 'string') {
this.sourceMap = JSON.parse(sourceMap.replace(/^\)\]\}'/, ''));
} else {
this.sourceMap = sourceMap;
}
}
SourceAdjuster.prototype.relativize = function (filepathOrUrl, mappedWithSourceMap) {
var filepath;
if (mappedWithSourceMap && filepathOrUrl && this.sourceMap) {
filepath = this.relativizeWithSourceMap(filepathOrUrl);
} else {
filepath = this.relativizeWithoutSourceMap(filepathOrUrl);
}
return fallbackOnBasename(filepath);
};
SourceAdjuster.prototype.relativizeWithSourceMap = function (filepathOrUrl) {
var sourceMapRoot = this.sourceMap.sourceRoot;
if (sourceMapRoot && isUrl(sourceMapRoot)) {
return _path.relative(sourceMapRoot, filepathOrUrl);
}
if (this.sourceRoot && isAbsolute(this.sourceRoot) && isAbsolute(filepathOrUrl)) {
return _path.relative(this.sourceRoot, filepathOrUrl);
}
if (sourceMapRoot && isAbsolute(sourceMapRoot) && isAbsolute(filepathOrUrl)) {
return _path.relative(sourceMapRoot, filepathOrUrl);
}
if (isUrl(filepathOrUrl)) {
return _path.basename(filepathOrUrl);
}
return filepathOrUrl;
};
SourceAdjuster.prototype.relativizeWithoutSourceMap = function (filepathOrUrl) {
var tmpPath = this.path || filepathOrUrl;
if (this.sourceRoot && isAbsolute(this.sourceRoot) && isAbsolute(tmpPath)) {
return _path.relative(this.sourceRoot, tmpPath);
} else {
return this.path;
}
};
function fallbackOnBasename (filepath) {
if (filepath) {
if (filepath.split(_path.sep).indexOf('..') !== -1) {
return _path.basename(filepath);
} else if (isUrl(filepath)) {
return _path.basename(filepath);
} else if (isAbsolute(filepath)) {
return _path.basename(filepath);
}
}
return filepath;
}
module.exports = SourceAdjuster;
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