mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-10-25 03:05:34 +00:00
5dec0e0beb
This patch was autogenerated by my decomponents.py
It covers almost every file with the extension js, jsm, html, py,
xhtml, or xul.
It removes blank lines after removed lines, when the removed lines are
preceded by either blank lines or the start of a new block. The "start
of a new block" is defined fairly hackily: either the line starts with
//, ends with */, ends with {, <![CDATA[, """ or '''. The first two
cover comments, the third one covers JS, the fourth covers JS embedded
in XUL, and the final two cover JS embedded in Python. This also
applies if the removed line was the first line of the file.
It covers the pattern matching cases like "var {classes: Cc,
interfaces: Ci, utils: Cu, results: Cr} = Components;". It'll remove
the entire thing if they are all either Ci, Cr, Cc or Cu, or it will
remove the appropriate ones and leave the residue behind. If there's
only one behind, then it will turn it into a normal, non-pattern
matching variable definition. (For instance, "const { classes: Cc,
Constructor: CC, interfaces: Ci, utils: Cu } = Components" becomes
"const CC = Components.Constructor".)
MozReview-Commit-ID: DeSHcClQ7cG
--HG--
extra : rebase_source : d9c41878036c1ef7766ef5e91a7005025bc1d72b
503 lines
20 KiB
JavaScript
503 lines
20 KiB
JavaScript
/* -*- indent-tabs-mode: nil; js-indent-level: 4 -*-
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* vim: sw=4 ts=4 sts=4 et filetype=javascript
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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this.EXPORTED_SYMBOLS = [
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"NetUtil",
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];
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/**
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* Necko utilities
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*/
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////////////////////////////////////////////////////////////////////////////////
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//// Constants
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const PR_UINT32_MAX = 0xffffffff;
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ChromeUtils.import("resource://gre/modules/XPCOMUtils.jsm");
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ChromeUtils.import("resource://gre/modules/Services.jsm");
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const BinaryInputStream = Components.Constructor("@mozilla.org/binaryinputstream;1",
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"nsIBinaryInputStream", "setInputStream");
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////////////////////////////////////////////////////////////////////////////////
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//// NetUtil Object
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this.NetUtil = {
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/**
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* Function to perform simple async copying from aSource (an input stream)
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* to aSink (an output stream). The copy will happen on some background
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* thread. Both streams will be closed when the copy completes.
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*
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* @param aSource
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* The input stream to read from
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* @param aSink
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* The output stream to write to
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* @param aCallback [optional]
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* A function that will be called at copy completion with a single
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* argument: the nsresult status code for the copy operation.
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*
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* @return An nsIRequest representing the copy operation (for example, this
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* can be used to cancel the copying). The consumer can ignore the
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* return value if desired.
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*/
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asyncCopy: function NetUtil_asyncCopy(aSource, aSink,
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aCallback = null)
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{
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if (!aSource || !aSink) {
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let exception = new Components.Exception(
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"Must have a source and a sink",
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Cr.NS_ERROR_INVALID_ARG,
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Components.stack.caller
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);
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throw exception;
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}
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// make a stream copier
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var copier = Cc["@mozilla.org/network/async-stream-copier;1"].
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createInstance(Ci.nsIAsyncStreamCopier2);
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copier.init(aSource, aSink,
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null /* Default event target */,
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0 /* Default length */,
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true, true /* Auto-close */);
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var observer;
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if (aCallback) {
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observer = {
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onStartRequest: function(aRequest, aContext) {},
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onStopRequest: function(aRequest, aContext, aStatusCode) {
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aCallback(aStatusCode);
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}
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}
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} else {
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observer = null;
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}
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// start the copying
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copier.QueryInterface(Ci.nsIAsyncStreamCopier).asyncCopy(observer, null);
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return copier;
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},
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/**
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* Asynchronously opens a source and fetches the response. While the fetch
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* is asynchronous, I/O may happen on the main thread. When reading from
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* a local file, prefer using "OS.File" methods instead.
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*
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* @param aSource
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* This argument can be one of the following:
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* - An options object that will be passed to NetUtil.newChannel.
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* - An existing nsIChannel.
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* - An existing nsIInputStream.
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* Using an nsIURI, nsIFile, or string spec directly is deprecated.
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* @param aCallback
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* The callback function that will be notified upon completion. It
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* will get these arguments:
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* 1) An nsIInputStream containing the data from aSource, if any.
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* 2) The status code from opening the source.
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* 3) Reference to the nsIRequest.
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*/
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asyncFetch: function NetUtil_asyncFetch(aSource, aCallback)
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{
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if (!aSource || !aCallback) {
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let exception = new Components.Exception(
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"Must have a source and a callback",
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Cr.NS_ERROR_INVALID_ARG,
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Components.stack.caller
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);
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throw exception;
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}
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// Create a pipe that will create our output stream that we can use once
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// we have gotten all the data.
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let pipe = Cc["@mozilla.org/pipe;1"].
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createInstance(Ci.nsIPipe);
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pipe.init(true, true, 0, PR_UINT32_MAX, null);
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// Create a listener that will give data to the pipe's output stream.
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let listener = Cc["@mozilla.org/network/simple-stream-listener;1"].
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createInstance(Ci.nsISimpleStreamListener);
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listener.init(pipe.outputStream, {
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onStartRequest: function(aRequest, aContext) {},
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onStopRequest: function(aRequest, aContext, aStatusCode) {
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pipe.outputStream.close();
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aCallback(pipe.inputStream, aStatusCode, aRequest);
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}
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});
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// Input streams are handled slightly differently from everything else.
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if (aSource instanceof Ci.nsIInputStream) {
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let pump = Cc["@mozilla.org/network/input-stream-pump;1"].
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createInstance(Ci.nsIInputStreamPump);
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pump.init(aSource, 0, 0, true);
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pump.asyncRead(listener, null);
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return;
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}
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let channel = aSource;
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if (!(channel instanceof Ci.nsIChannel)) {
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channel = this.newChannel(aSource);
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}
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try {
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// Open the channel using asyncOpen2() if the loadinfo contains one
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// of the security mode flags, otherwise fall back to use asyncOpen().
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if (channel.loadInfo &&
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channel.loadInfo.securityMode != 0) {
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channel.asyncOpen2(listener);
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}
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else {
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// Log deprecation warning to console to make sure all channels
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// are created providing the correct security flags in the loadinfo.
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// See nsILoadInfo for all available security flags and also the API
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// of NetUtil.newChannel() for details above.
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Cu.reportError("NetUtil.jsm: asyncFetch() requires the channel to have " +
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"one of the security flags set in the loadinfo (see nsILoadInfo). " +
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"Please create channel using NetUtil.newChannel()");
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channel.asyncOpen(listener, null);
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}
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}
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catch (e) {
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let exception = new Components.Exception(
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"Failed to open input source '" + channel.originalURI.spec + "'",
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e.result,
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Components.stack.caller,
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aSource,
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e
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);
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throw exception;
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}
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},
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/**
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* Constructs a new URI for the given spec, character set, and base URI, or
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* an nsIFile.
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*
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* @param aTarget
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* The string spec for the desired URI or an nsIFile.
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* @param aOriginCharset [optional]
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* The character set for the URI. Only used if aTarget is not an
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* nsIFile.
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* @param aBaseURI [optional]
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* The base URI for the spec. Only used if aTarget is not an
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* nsIFile.
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*
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* @return an nsIURI object.
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*/
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newURI: function NetUtil_newURI(aTarget, aOriginCharset, aBaseURI)
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{
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if (!aTarget) {
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let exception = new Components.Exception(
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"Must have a non-null string spec or nsIFile object",
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Cr.NS_ERROR_INVALID_ARG,
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Components.stack.caller
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);
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throw exception;
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}
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if (aTarget instanceof Ci.nsIFile) {
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return this.ioService.newFileURI(aTarget);
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}
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return this.ioService.newURI(aTarget, aOriginCharset, aBaseURI);
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},
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/**
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* Constructs a new channel for the given source.
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*
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* Keep in mind that URIs coming from a webpage should *never* use the
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* systemPrincipal as the loadingPrincipal.
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*
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* @param aWhatToLoad
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* This argument used to be a string spec for the desired URI, an
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* nsIURI, or an nsIFile. Now it should be an options object with
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* the following properties:
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* {
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* uri:
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* The full URI spec string, nsIURI or nsIFile to create the
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* channel for.
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* Note that this cannot be an nsIFile if you have to specify a
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* non-default charset or base URI. Call NetUtil.newURI first if
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* you need to construct an URI using those options.
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* loadingNode:
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* loadingPrincipal:
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* triggeringPrincipal:
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* securityFlags:
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* contentPolicyType:
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* These will be used as values for the nsILoadInfo object on the
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* created channel. For details, see nsILoadInfo in nsILoadInfo.idl
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* loadUsingSystemPrincipal:
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* Set this to true to use the system principal as
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* loadingPrincipal. This must be omitted if loadingPrincipal or
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* loadingNode are present.
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* This should be used with care as it skips security checks.
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* }
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* @param aOriginCharset [deprecated]
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* The character set for the URI. Only used if aWhatToLoad is a
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* string, which is a deprecated API. Must be undefined otherwise.
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* Use NetUtil.newURI if you need to use this option.
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* @param aBaseURI [deprecated]
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* The base URI for the spec. Only used if aWhatToLoad is a string,
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* which is a deprecated API. Must be undefined otherwise. Use
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* NetUtil.newURI if you need to use this option.
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* @return an nsIChannel object.
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*/
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newChannel: function NetUtil_newChannel(aWhatToLoad, aOriginCharset, aBaseURI)
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{
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// Check for the deprecated API first.
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if (typeof aWhatToLoad == "string" ||
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(aWhatToLoad instanceof Ci.nsIFile) ||
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(aWhatToLoad instanceof Ci.nsIURI)) {
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let uri = (aWhatToLoad instanceof Ci.nsIURI)
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? aWhatToLoad
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: this.newURI(aWhatToLoad, aOriginCharset, aBaseURI);
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// log deprecation warning for developers.
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Services.console.logStringMessage(
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"Warning: NetUtil.newChannel(uri) deprecated, please provide argument 'aWhatToLoad'");
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// Provide default loadinfo arguments and call the new API.
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let systemPrincipal =
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Services.scriptSecurityManager.getSystemPrincipal();
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return this.ioService.newChannelFromURI2(
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uri,
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null, // loadingNode
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systemPrincipal, // loadingPrincipal
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null, // triggeringPrincipal
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Ci.nsILoadInfo.SEC_ALLOW_CROSS_ORIGIN_DATA_IS_NULL,
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Ci.nsIContentPolicy.TYPE_OTHER);
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}
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// We are using the updated API, that requires only the options object.
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if (typeof aWhatToLoad != "object" ||
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aOriginCharset !== undefined ||
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aBaseURI !== undefined) {
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throw new Components.Exception(
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"newChannel requires a single object argument",
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Cr.NS_ERROR_INVALID_ARG,
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Components.stack.caller
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);
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}
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let { uri,
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loadingNode,
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loadingPrincipal,
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loadUsingSystemPrincipal,
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triggeringPrincipal,
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securityFlags,
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contentPolicyType } = aWhatToLoad;
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if (!uri) {
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throw new Components.Exception(
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"newChannel requires the 'uri' property on the options object.",
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Cr.NS_ERROR_INVALID_ARG,
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Components.stack.caller
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);
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}
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if (typeof uri == "string" || uri instanceof Ci.nsIFile) {
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uri = this.newURI(uri);
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}
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if (!loadingNode && !loadingPrincipal && !loadUsingSystemPrincipal) {
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throw new Components.Exception(
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"newChannel requires at least one of the 'loadingNode'," +
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" 'loadingPrincipal', or 'loadUsingSystemPrincipal'" +
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" properties on the options object.",
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Cr.NS_ERROR_INVALID_ARG,
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Components.stack.caller
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);
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}
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if (loadUsingSystemPrincipal === true) {
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if (loadingNode || loadingPrincipal) {
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throw new Components.Exception(
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"newChannel does not accept 'loadUsingSystemPrincipal'" +
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" if the 'loadingNode' or 'loadingPrincipal' properties" +
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" are present on the options object.",
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Cr.NS_ERROR_INVALID_ARG,
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Components.stack.caller
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);
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}
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loadingPrincipal = Services.scriptSecurityManager
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.getSystemPrincipal();
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} else if (loadUsingSystemPrincipal !== undefined) {
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throw new Components.Exception(
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"newChannel requires the 'loadUsingSystemPrincipal'" +
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" property on the options object to be 'true' or 'undefined'.",
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Cr.NS_ERROR_INVALID_ARG,
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Components.stack.caller
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);
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}
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if (securityFlags === undefined) {
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if (!loadUsingSystemPrincipal) {
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throw new Components.Exception(
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"newChannel requires the 'securityFlags' property on" +
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" the options object unless loading from system principal.",
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Cr.NS_ERROR_INVALID_ARG,
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Components.stack.caller
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);
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}
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securityFlags = Ci.nsILoadInfo.SEC_ALLOW_CROSS_ORIGIN_DATA_IS_NULL;
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}
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if (contentPolicyType === undefined) {
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if (!loadUsingSystemPrincipal) {
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throw new Components.Exception(
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"newChannel requires the 'contentPolicyType' property on" +
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" the options object unless loading from system principal.",
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Cr.NS_ERROR_INVALID_ARG,
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Components.stack.caller
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);
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}
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contentPolicyType = Ci.nsIContentPolicy.TYPE_OTHER;
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}
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return this.ioService.newChannelFromURI2(uri,
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loadingNode || null,
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loadingPrincipal || null,
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triggeringPrincipal || null,
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securityFlags,
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contentPolicyType);
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},
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/**
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* Reads aCount bytes from aInputStream into a string.
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*
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* @param aInputStream
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* The input stream to read from.
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* @param aCount
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* The number of bytes to read from the stream.
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* @param aOptions [optional]
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* charset
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* The character encoding of stream data.
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* replacement
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* The character to replace unknown byte sequences.
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* If unset, it causes an exceptions to be thrown.
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*
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* @return the bytes from the input stream in string form.
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*
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* @throws NS_ERROR_INVALID_ARG if aInputStream is not an nsIInputStream.
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* @throws NS_BASE_STREAM_WOULD_BLOCK if reading from aInputStream would
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* block the calling thread (non-blocking mode only).
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* @throws NS_ERROR_FAILURE if there are not enough bytes available to read
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* aCount amount of data.
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* @throws NS_ERROR_ILLEGAL_INPUT if aInputStream has invalid sequences
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*/
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readInputStreamToString: function NetUtil_readInputStreamToString(aInputStream,
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aCount,
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aOptions)
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{
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if (!(aInputStream instanceof Ci.nsIInputStream)) {
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let exception = new Components.Exception(
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"First argument should be an nsIInputStream",
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Cr.NS_ERROR_INVALID_ARG,
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Components.stack.caller
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);
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throw exception;
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}
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if (!aCount) {
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let exception = new Components.Exception(
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"Non-zero amount of bytes must be specified",
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Cr.NS_ERROR_INVALID_ARG,
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Components.stack.caller
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);
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throw exception;
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}
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if (aOptions && "charset" in aOptions) {
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let cis = Cc["@mozilla.org/intl/converter-input-stream;1"].
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createInstance(Ci.nsIConverterInputStream);
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try {
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// When replacement is set, the character that is unknown sequence
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// replaces with aOptions.replacement character.
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if (!("replacement" in aOptions)) {
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// aOptions.replacement isn't set.
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// If input stream has unknown sequences for aOptions.charset,
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// throw NS_ERROR_ILLEGAL_INPUT.
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aOptions.replacement = 0;
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}
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cis.init(aInputStream, aOptions.charset, aCount,
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aOptions.replacement);
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let str = {};
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cis.readString(-1, str);
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cis.close();
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return str.value;
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}
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catch (e) {
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// Adjust the stack so it throws at the caller's location.
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throw new Components.Exception(e.message, e.result,
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Components.stack.caller, e.data);
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}
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}
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let sis = Cc["@mozilla.org/scriptableinputstream;1"].
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createInstance(Ci.nsIScriptableInputStream);
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sis.init(aInputStream);
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try {
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return sis.readBytes(aCount);
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}
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catch (e) {
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// Adjust the stack so it throws at the caller's location.
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throw new Components.Exception(e.message, e.result,
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Components.stack.caller, e.data);
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}
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},
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/**
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|
* Reads aCount bytes from aInputStream into a string.
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*
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* @param {nsIInputStream} aInputStream
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* The input stream to read from.
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* @param {integer} [aCount = aInputStream.available()]
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* The number of bytes to read from the stream.
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*
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* @return the bytes from the input stream in string form.
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*
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* @throws NS_ERROR_INVALID_ARG if aInputStream is not an nsIInputStream.
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* @throws NS_BASE_STREAM_WOULD_BLOCK if reading from aInputStream would
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* block the calling thread (non-blocking mode only).
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* @throws NS_ERROR_FAILURE if there are not enough bytes available to read
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* aCount amount of data.
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*/
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readInputStream(aInputStream, aCount)
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{
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if (!(aInputStream instanceof Ci.nsIInputStream)) {
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let exception = new Components.Exception(
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"First argument should be an nsIInputStream",
|
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Cr.NS_ERROR_INVALID_ARG,
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Components.stack.caller
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);
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throw exception;
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}
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if (!aCount) {
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aCount = aInputStream.available();
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}
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let stream = new BinaryInputStream(aInputStream);
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let result = new ArrayBuffer(aCount);
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stream.readArrayBuffer(result.byteLength, result);
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return result;
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},
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/**
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|
* Returns a reference to nsIIOService.
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|
*
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* @return a reference to nsIIOService.
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*/
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get ioService()
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{
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delete this.ioService;
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return this.ioService = Cc["@mozilla.org/network/io-service;1"].
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getService(Ci.nsIIOService);
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},
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};
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