418 lines
10 KiB
JavaScript
418 lines
10 KiB
JavaScript
|
/* -*- Mode: js; js-indent-level: 2; -*- */
|
||
|
|
/*
|
||
|
|
* Copyright 2011 Mozilla Foundation and contributors
|
||
|
|
* Licensed under the New BSD license. See LICENSE or:
|
||
|
|
* http://opensource.org/licenses/BSD-3-Clause
|
||
|
|
*/
|
||
|
|
|
||
|
|
/**
|
||
|
|
* This is a helper function for getting values from parameter/options
|
||
|
|
* objects.
|
||
|
|
*
|
||
|
|
* @param args The object we are extracting values from
|
||
|
|
* @param name The name of the property we are getting.
|
||
|
|
* @param defaultValue An optional value to return if the property is missing
|
||
|
|
* from the object. If this is not specified and the property is missing, an
|
||
|
|
* error will be thrown.
|
||
|
|
*/
|
||
|
|
function getArg(aArgs, aName, aDefaultValue) {
|
||
|
|
if (aName in aArgs) {
|
||
|
|
return aArgs[aName];
|
||
|
|
} else if (arguments.length === 3) {
|
||
|
|
return aDefaultValue;
|
||
|
|
} else {
|
||
|
|
throw new Error('"' + aName + '" is a required argument.');
|
||
|
|
}
|
||
|
|
}
|
||
|
|
exports.getArg = getArg;
|
||
|
|
|
||
|
|
var urlRegexp = /^(?:([\w+\-.]+):)?\/\/(?:(\w+:\w+)@)?([\w.]*)(?::(\d+))?(\S*)$/;
|
||
|
|
var dataUrlRegexp = /^data:.+\,.+$/;
|
||
|
|
|
||
|
|
function urlParse(aUrl) {
|
||
|
|
var match = aUrl.match(urlRegexp);
|
||
|
|
if (!match) {
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
return {
|
||
|
|
scheme: match[1],
|
||
|
|
auth: match[2],
|
||
|
|
host: match[3],
|
||
|
|
port: match[4],
|
||
|
|
path: match[5]
|
||
|
|
};
|
||
|
|
}
|
||
|
|
exports.urlParse = urlParse;
|
||
|
|
|
||
|
|
function urlGenerate(aParsedUrl) {
|
||
|
|
var url = '';
|
||
|
|
if (aParsedUrl.scheme) {
|
||
|
|
url += aParsedUrl.scheme + ':';
|
||
|
|
}
|
||
|
|
url += '//';
|
||
|
|
if (aParsedUrl.auth) {
|
||
|
|
url += aParsedUrl.auth + '@';
|
||
|
|
}
|
||
|
|
if (aParsedUrl.host) {
|
||
|
|
url += aParsedUrl.host;
|
||
|
|
}
|
||
|
|
if (aParsedUrl.port) {
|
||
|
|
url += ":" + aParsedUrl.port
|
||
|
|
}
|
||
|
|
if (aParsedUrl.path) {
|
||
|
|
url += aParsedUrl.path;
|
||
|
|
}
|
||
|
|
return url;
|
||
|
|
}
|
||
|
|
exports.urlGenerate = urlGenerate;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Normalizes a path, or the path portion of a URL:
|
||
|
|
*
|
||
|
|
* - Replaces consecutive slashes with one slash.
|
||
|
|
* - Removes unnecessary '.' parts.
|
||
|
|
* - Removes unnecessary '<dir>/..' parts.
|
||
|
|
*
|
||
|
|
* Based on code in the Node.js 'path' core module.
|
||
|
|
*
|
||
|
|
* @param aPath The path or url to normalize.
|
||
|
|
*/
|
||
|
|
function normalize(aPath) {
|
||
|
|
var path = aPath;
|
||
|
|
var url = urlParse(aPath);
|
||
|
|
if (url) {
|
||
|
|
if (!url.path) {
|
||
|
|
return aPath;
|
||
|
|
}
|
||
|
|
path = url.path;
|
||
|
|
}
|
||
|
|
var isAbsolute = exports.isAbsolute(path);
|
||
|
|
|
||
|
|
var parts = path.split(/\/+/);
|
||
|
|
for (var part, up = 0, i = parts.length - 1; i >= 0; i--) {
|
||
|
|
part = parts[i];
|
||
|
|
if (part === '.') {
|
||
|
|
parts.splice(i, 1);
|
||
|
|
} else if (part === '..') {
|
||
|
|
up++;
|
||
|
|
} else if (up > 0) {
|
||
|
|
if (part === '') {
|
||
|
|
// The first part is blank if the path is absolute. Trying to go
|
||
|
|
// above the root is a no-op. Therefore we can remove all '..' parts
|
||
|
|
// directly after the root.
|
||
|
|
parts.splice(i + 1, up);
|
||
|
|
up = 0;
|
||
|
|
} else {
|
||
|
|
parts.splice(i, 2);
|
||
|
|
up--;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
path = parts.join('/');
|
||
|
|
|
||
|
|
if (path === '') {
|
||
|
|
path = isAbsolute ? '/' : '.';
|
||
|
|
}
|
||
|
|
|
||
|
|
if (url) {
|
||
|
|
url.path = path;
|
||
|
|
return urlGenerate(url);
|
||
|
|
}
|
||
|
|
return path;
|
||
|
|
}
|
||
|
|
exports.normalize = normalize;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Joins two paths/URLs.
|
||
|
|
*
|
||
|
|
* @param aRoot The root path or URL.
|
||
|
|
* @param aPath The path or URL to be joined with the root.
|
||
|
|
*
|
||
|
|
* - If aPath is a URL or a data URI, aPath is returned, unless aPath is a
|
||
|
|
* scheme-relative URL: Then the scheme of aRoot, if any, is prepended
|
||
|
|
* first.
|
||
|
|
* - Otherwise aPath is a path. If aRoot is a URL, then its path portion
|
||
|
|
* is updated with the result and aRoot is returned. Otherwise the result
|
||
|
|
* is returned.
|
||
|
|
* - If aPath is absolute, the result is aPath.
|
||
|
|
* - Otherwise the two paths are joined with a slash.
|
||
|
|
* - Joining for example 'http://' and 'www.example.com' is also supported.
|
||
|
|
*/
|
||
|
|
function join(aRoot, aPath) {
|
||
|
|
if (aRoot === "") {
|
||
|
|
aRoot = ".";
|
||
|
|
}
|
||
|
|
if (aPath === "") {
|
||
|
|
aPath = ".";
|
||
|
|
}
|
||
|
|
var aPathUrl = urlParse(aPath);
|
||
|
|
var aRootUrl = urlParse(aRoot);
|
||
|
|
if (aRootUrl) {
|
||
|
|
aRoot = aRootUrl.path || '/';
|
||
|
|
}
|
||
|
|
|
||
|
|
// `join(foo, '//www.example.org')`
|
||
|
|
if (aPathUrl && !aPathUrl.scheme) {
|
||
|
|
if (aRootUrl) {
|
||
|
|
aPathUrl.scheme = aRootUrl.scheme;
|
||
|
|
}
|
||
|
|
return urlGenerate(aPathUrl);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (aPathUrl || aPath.match(dataUrlRegexp)) {
|
||
|
|
return aPath;
|
||
|
|
}
|
||
|
|
|
||
|
|
// `join('http://', 'www.example.com')`
|
||
|
|
if (aRootUrl && !aRootUrl.host && !aRootUrl.path) {
|
||
|
|
aRootUrl.host = aPath;
|
||
|
|
return urlGenerate(aRootUrl);
|
||
|
|
}
|
||
|
|
|
||
|
|
var joined = aPath.charAt(0) === '/'
|
||
|
|
? aPath
|
||
|
|
: normalize(aRoot.replace(/\/+$/, '') + '/' + aPath);
|
||
|
|
|
||
|
|
if (aRootUrl) {
|
||
|
|
aRootUrl.path = joined;
|
||
|
|
return urlGenerate(aRootUrl);
|
||
|
|
}
|
||
|
|
return joined;
|
||
|
|
}
|
||
|
|
exports.join = join;
|
||
|
|
|
||
|
|
exports.isAbsolute = function (aPath) {
|
||
|
|
return aPath.charAt(0) === '/' || !!aPath.match(urlRegexp);
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Make a path relative to a URL or another path.
|
||
|
|
*
|
||
|
|
* @param aRoot The root path or URL.
|
||
|
|
* @param aPath The path or URL to be made relative to aRoot.
|
||
|
|
*/
|
||
|
|
function relative(aRoot, aPath) {
|
||
|
|
if (aRoot === "") {
|
||
|
|
aRoot = ".";
|
||
|
|
}
|
||
|
|
|
||
|
|
aRoot = aRoot.replace(/\/$/, '');
|
||
|
|
|
||
|
|
// It is possible for the path to be above the root. In this case, simply
|
||
|
|
// checking whether the root is a prefix of the path won't work. Instead, we
|
||
|
|
// need to remove components from the root one by one, until either we find
|
||
|
|
// a prefix that fits, or we run out of components to remove.
|
||
|
|
var level = 0;
|
||
|
|
while (aPath.indexOf(aRoot + '/') !== 0) {
|
||
|
|
var index = aRoot.lastIndexOf("/");
|
||
|
|
if (index < 0) {
|
||
|
|
return aPath;
|
||
|
|
}
|
||
|
|
|
||
|
|
// If the only part of the root that is left is the scheme (i.e. http://,
|
||
|
|
// file:///, etc.), one or more slashes (/), or simply nothing at all, we
|
||
|
|
// have exhausted all components, so the path is not relative to the root.
|
||
|
|
aRoot = aRoot.slice(0, index);
|
||
|
|
if (aRoot.match(/^([^\/]+:\/)?\/*$/)) {
|
||
|
|
return aPath;
|
||
|
|
}
|
||
|
|
|
||
|
|
++level;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Make sure we add a "../" for each component we removed from the root.
|
||
|
|
return Array(level + 1).join("../") + aPath.substr(aRoot.length + 1);
|
||
|
|
}
|
||
|
|
exports.relative = relative;
|
||
|
|
|
||
|
|
var supportsNullProto = (function () {
|
||
|
|
var obj = Object.create(null);
|
||
|
|
return !('__proto__' in obj);
|
||
|
|
}());
|
||
|
|
|
||
|
|
function identity (s) {
|
||
|
|
return s;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Because behavior goes wacky when you set `__proto__` on objects, we
|
||
|
|
* have to prefix all the strings in our set with an arbitrary character.
|
||
|
|
*
|
||
|
|
* See https://github.com/mozilla/source-map/pull/31 and
|
||
|
|
* https://github.com/mozilla/source-map/issues/30
|
||
|
|
*
|
||
|
|
* @param String aStr
|
||
|
|
*/
|
||
|
|
function toSetString(aStr) {
|
||
|
|
if (isProtoString(aStr)) {
|
||
|
|
return '$' + aStr;
|
||
|
|
}
|
||
|
|
|
||
|
|
return aStr;
|
||
|
|
}
|
||
|
|
exports.toSetString = supportsNullProto ? identity : toSetString;
|
||
|
|
|
||
|
|
function fromSetString(aStr) {
|
||
|
|
if (isProtoString(aStr)) {
|
||
|
|
return aStr.slice(1);
|
||
|
|
}
|
||
|
|
|
||
|
|
return aStr;
|
||
|
|
}
|
||
|
|
exports.fromSetString = supportsNullProto ? identity : fromSetString;
|
||
|
|
|
||
|
|
function isProtoString(s) {
|
||
|
|
if (!s) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
var length = s.length;
|
||
|
|
|
||
|
|
if (length < 9 /* "__proto__".length */) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (s.charCodeAt(length - 1) !== 95 /* '_' */ ||
|
||
|
|
s.charCodeAt(length - 2) !== 95 /* '_' */ ||
|
||
|
|
s.charCodeAt(length - 3) !== 111 /* 'o' */ ||
|
||
|
|
s.charCodeAt(length - 4) !== 116 /* 't' */ ||
|
||
|
|
s.charCodeAt(length - 5) !== 111 /* 'o' */ ||
|
||
|
|
s.charCodeAt(length - 6) !== 114 /* 'r' */ ||
|
||
|
|
s.charCodeAt(length - 7) !== 112 /* 'p' */ ||
|
||
|
|
s.charCodeAt(length - 8) !== 95 /* '_' */ ||
|
||
|
|
s.charCodeAt(length - 9) !== 95 /* '_' */) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
for (var i = length - 10; i >= 0; i--) {
|
||
|
|
if (s.charCodeAt(i) !== 36 /* '$' */) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Comparator between two mappings where the original positions are compared.
|
||
|
|
*
|
||
|
|
* Optionally pass in `true` as `onlyCompareGenerated` to consider two
|
||
|
|
* mappings with the same original source/line/column, but different generated
|
||
|
|
* line and column the same. Useful when searching for a mapping with a
|
||
|
|
* stubbed out mapping.
|
||
|
|
*/
|
||
|
|
function compareByOriginalPositions(mappingA, mappingB, onlyCompareOriginal) {
|
||
|
|
var cmp = mappingA.source - mappingB.source;
|
||
|
|
if (cmp !== 0) {
|
||
|
|
return cmp;
|
||
|
|
}
|
||
|
|
|
||
|
|
cmp = mappingA.originalLine - mappingB.originalLine;
|
||
|
|
if (cmp !== 0) {
|
||
|
|
return cmp;
|
||
|
|
}
|
||
|
|
|
||
|
|
cmp = mappingA.originalColumn - mappingB.originalColumn;
|
||
|
|
if (cmp !== 0 || onlyCompareOriginal) {
|
||
|
|
return cmp;
|
||
|
|
}
|
||
|
|
|
||
|
|
cmp = mappingA.generatedColumn - mappingB.generatedColumn;
|
||
|
|
if (cmp !== 0) {
|
||
|
|
return cmp;
|
||
|
|
}
|
||
|
|
|
||
|
|
cmp = mappingA.generatedLine - mappingB.generatedLine;
|
||
|
|
if (cmp !== 0) {
|
||
|
|
return cmp;
|
||
|
|
}
|
||
|
|
|
||
|
|
return mappingA.name - mappingB.name;
|
||
|
|
}
|
||
|
|
exports.compareByOriginalPositions = compareByOriginalPositions;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Comparator between two mappings with deflated source and name indices where
|
||
|
|
* the generated positions are compared.
|
||
|
|
*
|
||
|
|
* Optionally pass in `true` as `onlyCompareGenerated` to consider two
|
||
|
|
* mappings with the same generated line and column, but different
|
||
|
|
* source/name/original line and column the same. Useful when searching for a
|
||
|
|
* mapping with a stubbed out mapping.
|
||
|
|
*/
|
||
|
|
function compareByGeneratedPositionsDeflated(mappingA, mappingB, onlyCompareGenerated) {
|
||
|
|
var cmp = mappingA.generatedLine - mappingB.generatedLine;
|
||
|
|
if (cmp !== 0) {
|
||
|
|
return cmp;
|
||
|
|
}
|
||
|
|
|
||
|
|
cmp = mappingA.generatedColumn - mappingB.generatedColumn;
|
||
|
|
if (cmp !== 0 || onlyCompareGenerated) {
|
||
|
|
return cmp;
|
||
|
|
}
|
||
|
|
|
||
|
|
cmp = mappingA.source - mappingB.source;
|
||
|
|
if (cmp !== 0) {
|
||
|
|
return cmp;
|
||
|
|
}
|
||
|
|
|
||
|
|
cmp = mappingA.originalLine - mappingB.originalLine;
|
||
|
|
if (cmp !== 0) {
|
||
|
|
return cmp;
|
||
|
|
}
|
||
|
|
|
||
|
|
cmp = mappingA.originalColumn - mappingB.originalColumn;
|
||
|
|
if (cmp !== 0) {
|
||
|
|
return cmp;
|
||
|
|
}
|
||
|
|
|
||
|
|
return mappingA.name - mappingB.name;
|
||
|
|
}
|
||
|
|
exports.compareByGeneratedPositionsDeflated = compareByGeneratedPositionsDeflated;
|
||
|
|
|
||
|
|
function strcmp(aStr1, aStr2) {
|
||
|
|
if (aStr1 === aStr2) {
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (aStr1 > aStr2) {
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Comparator between two mappings with inflated source and name strings where
|
||
|
|
* the generated positions are compared.
|
||
|
|
*/
|
||
|
|
function compareByGeneratedPositionsInflated(mappingA, mappingB) {
|
||
|
|
var cmp = mappingA.generatedLine - mappingB.generatedLine;
|
||
|
|
if (cmp !== 0) {
|
||
|
|
return cmp;
|
||
|
|
}
|
||
|
|
|
||
|
|
cmp = mappingA.generatedColumn - mappingB.generatedColumn;
|
||
|
|
if (cmp !== 0) {
|
||
|
|
return cmp;
|
||
|
|
}
|
||
|
|
|
||
|
|
cmp = strcmp(mappingA.source, mappingB.source);
|
||
|
|
if (cmp !== 0) {
|
||
|
|
return cmp;
|
||
|
|
}
|
||
|
|
|
||
|
|
cmp = mappingA.originalLine - mappingB.originalLine;
|
||
|
|
if (cmp !== 0) {
|
||
|
|
return cmp;
|
||
|
|
}
|
||
|
|
|
||
|
|
cmp = mappingA.originalColumn - mappingB.originalColumn;
|
||
|
|
if (cmp !== 0) {
|
||
|
|
return cmp;
|
||
|
|
}
|
||
|
|
|
||
|
|
return strcmp(mappingA.name, mappingB.name);
|
||
|
|
}
|
||
|
|
exports.compareByGeneratedPositionsInflated = compareByGeneratedPositionsInflated;
|