Code cosmetics

cps/static/js/untar.js

@@ -22,147 +22,147 @@ var totalFilesInArchive = 0;
 
 // Helper functions.
 var info = function(str) {
-  postMessage(new bitjs.archive.UnarchiveInfoEvent(str));
+    postMessage(new bitjs.archive.UnarchiveInfoEvent(str));
 };
 var err = function(str) {
-  postMessage(new bitjs.archive.UnarchiveErrorEvent(str));
+    postMessage(new bitjs.archive.UnarchiveErrorEvent(str));
 };
 var postProgress = function() {
-  postMessage(new bitjs.archive.UnarchiveProgressEvent(
+    postMessage(new bitjs.archive.UnarchiveProgressEvent(
-      currentFilename,
+        currentFilename,
-      currentFileNumber,
+        currentFileNumber,
-      currentBytesUnarchivedInFile,
+        currentBytesUnarchivedInFile,
-      currentBytesUnarchived,
+        currentBytesUnarchived,
-      totalUncompressedBytesInArchive,
+        totalUncompressedBytesInArchive,
-      totalFilesInArchive));
+        totalFilesInArchive));
 };
 
 // Removes all characters from the first zero-byte in the string onwards.
 var readCleanString = function(bstr, numBytes) {
-  var str = bstr.readString(numBytes);
+    var str = bstr.readString(numBytes);
-  var zIndex = str.indexOf(String.fromCharCode(0));
+    var zIndex = str.indexOf(String.fromCharCode(0));
-  return zIndex != -1 ? str.substr(0, zIndex) : str;
+    return zIndex != -1 ? str.substr(0, zIndex) : str;
 };
 
 // takes a ByteStream and parses out the local file information
 var TarLocalFile = function(bstream) {
-  this.isValid = false;
+    this.isValid = false;
-
+
-  // Read in the header block
+    // Read in the header block
-  this.name = readCleanString(bstream, 100);
+    this.name = readCleanString(bstream, 100);
-  this.mode = readCleanString(bstream, 8);
+    this.mode = readCleanString(bstream, 8);
-  this.uid = readCleanString(bstream, 8);
+    this.uid = readCleanString(bstream, 8);
-  this.gid = readCleanString(bstream, 8);
+    this.gid = readCleanString(bstream, 8);
-  this.size = parseInt(readCleanString(bstream, 12), 8);
+    this.size = parseInt(readCleanString(bstream, 12), 8);
-  this.mtime = readCleanString(bstream, 12);
+    this.mtime = readCleanString(bstream, 12);
-  this.chksum = readCleanString(bstream, 8);
+    this.chksum = readCleanString(bstream, 8);
-  this.typeflag = readCleanString(bstream, 1);
+    this.typeflag = readCleanString(bstream, 1);
-  this.linkname = readCleanString(bstream, 100);
+    this.linkname = readCleanString(bstream, 100);
-  this.maybeMagic = readCleanString(bstream, 6);
+    this.maybeMagic = readCleanString(bstream, 6);
-
+
-  if (this.maybeMagic == "ustar") {
+    if (this.maybeMagic == "ustar") {
-  	this.version = readCleanString(bstream, 2);
+        this.version = readCleanString(bstream, 2);
-  	this.uname = readCleanString(bstream, 32);
+        this.uname = readCleanString(bstream, 32);
-  	this.gname = readCleanString(bstream, 32);
+        this.gname = readCleanString(bstream, 32);
-  	this.devmajor = readCleanString(bstream, 8);
+        this.devmajor = readCleanString(bstream, 8);
-  	this.devminor = readCleanString(bstream, 8);
+        this.devminor = readCleanString(bstream, 8);
-  	this.prefix = readCleanString(bstream, 155);
+        this.prefix = readCleanString(bstream, 155);
-
+
-  	if (this.prefix.length) {
+        if (this.prefix.length) {
-      this.name = this.prefix + this.name;
+            this.name = this.prefix + this.name;
-  	}
+  	    }
-  	bstream.readBytes(12); // 512 - 500
+  	    bstream.readBytes(12); // 512 - 500
-  } else {
+    } else {
-  	bstream.readBytes(255); // 512 - 257
+      	bstream.readBytes(255); // 512 - 257
-  }
+    }
-  
+  
-  // Done header, now rest of blocks are the file contents.
+    // Done header, now rest of blocks are the file contents.
-  this.filename = this.name;
+    this.filename = this.name;
-  this.fileData = null;
+    this.fileData = null;
-
+
-  info("Untarring file '" + this.filename + "'");
+    info("Untarring file '" + this.filename + "'");
-  info("  size = " + this.size);
+    info("  size = " + this.size);
-  info("  typeflag = " + this.typeflag);
+    info("  typeflag = " + this.typeflag);
-
+
-  // A regular file.
+    // A regular file.
-  if (this.typeflag == 0) {
+    if (this.typeflag == 0) {
-  	info("  This is a regular file.");
+        info("  This is a regular file.");
-  	var sizeInBytes = parseInt(this.size);
+        var sizeInBytes = parseInt(this.size);
-  	this.fileData = new Uint8Array(bstream.bytes.buffer, bstream.ptr, this.size);
+        this.fileData = new Uint8Array(bstream.bytes.buffer, bstream.ptr, this.size);
-    if (this.name.length > 0 && this.size > 0 && this.fileData && this.fileData.buffer) {
+        if (this.name.length > 0 && this.size > 0 && this.fileData && this.fileData.buffer) {
-      this.isValid = true;
+            this.isValid = true;
-  	}
+        }
-
+
-    bstream.readBytes(this.size);
+        bstream.readBytes(this.size);
-
+
-  	// Round up to 512-byte blocks.
+        // Round up to 512-byte blocks.
-  	var remaining = 512 - this.size % 512;
+        var remaining = 512 - this.size % 512;
-  	if (remaining > 0 && remaining < 512) {
+        if (remaining > 0 && remaining < 512) {
-      bstream.readBytes(remaining);
+            bstream.readBytes(remaining);
-  	}
+        }
-  } else if (this.typeflag == 5) {
+    } else if (this.typeflag == 5) {
-  	 info("  This is a directory.")
+        info("  This is a directory.")
-  }
+    }
 };
 
 // Takes an ArrayBuffer of a tar file in
 // returns null on error
 // returns an array of DecompressedFile objects on success
 var untar = function(arrayBuffer) {
-  currentFilename = "";
+    currentFilename = "";
-  currentFileNumber = 0;
+    currentFileNumber = 0;
-  currentBytesUnarchivedInFile = 0;
+    currentBytesUnarchivedInFile = 0;
-  currentBytesUnarchived = 0;
+    currentBytesUnarchived = 0;
-  totalUncompressedBytesInArchive = 0;
+    totalUncompressedBytesInArchive = 0;
-  totalFilesInArchive = 0;
+    totalFilesInArchive = 0;
-
+
-  postMessage(new bitjs.archive.UnarchiveStartEvent());
+    postMessage(new bitjs.archive.UnarchiveStartEvent());
-  var bstream = new bitjs.io.ByteStream(arrayBuffer);
+    var bstream = new bitjs.io.ByteStream(arrayBuffer);
-  var localFiles = [];
+    var localFiles = [];
-
+
-  // While we don't encounter an empty block, keep making TarLocalFiles.
+    // While we don't encounter an empty block, keep making TarLocalFiles.
-  while (bstream.peekNumber(4) != 0) {
+    while (bstream.peekNumber(4) != 0) {
-  	var oneLocalFile = new TarLocalFile(bstream);
+        var oneLocalFile = new TarLocalFile(bstream);
-  	if (oneLocalFile && oneLocalFile.isValid) {
+        if (oneLocalFile && oneLocalFile.isValid) {
-      localFiles.push(oneLocalFile);
+            localFiles.push(oneLocalFile);
-      totalUncompressedBytesInArchive += oneLocalFile.size;
+            totalUncompressedBytesInArchive += oneLocalFile.size;
-  	}
+        }
-  }
+    }
-  totalFilesInArchive = localFiles.length;
+    totalFilesInArchive = localFiles.length;
-
+
-  // got all local files, now sort them
+    // got all local files, now sort them
-  localFiles.sort(function(a,b) {
+    localFiles.sort(function(a,b) {
-      var aname = a.filename.toLowerCase();
+        var aname = a.filename.toLowerCase();
-      var bname = b.filename.toLowerCase();
+        var bname = b.filename.toLowerCase();
-      return aname > bname ? 1 : -1;
+        return aname > bname ? 1 : -1;
-  });
+    });
-
+
-  // report # files and total length
+    // report # files and total length
-  if (localFiles.length > 0) {
+    if (localFiles.length > 0) {
-    postProgress();
+        postProgress();
-  }
+    }
-
+
-  // now do the shipping of each file
+    // now do the shipping of each file
-  for (var i = 0; i < localFiles.length; ++i) {
+    for (var i = 0; i < localFiles.length; ++i) {
-    var localfile = localFiles[i];
+        var localfile = localFiles[i];
-    info("Sending file '" + localfile.filename + "' up");
+        info("Sending file '" + localfile.filename + "' up");
-
+
-    // update progress
+        // update progress
-    currentFilename = localfile.filename;
+        currentFilename = localfile.filename;
-    currentFileNumber = i;
+        currentFileNumber = i;
-    currentBytesUnarchivedInFile = localfile.size;
+        currentBytesUnarchivedInFile = localfile.size;
-    currentBytesUnarchived += localfile.size;
+        currentBytesUnarchived += localfile.size;
-    postMessage(new bitjs.archive.UnarchiveExtractEvent(localfile));
+        postMessage(new bitjs.archive.UnarchiveExtractEvent(localfile));
-    postProgress();
+        postProgress();
-  }
+    }
 
-  postProgress();
+    postProgress();
 
-  postMessage(new bitjs.archive.UnarchiveFinishEvent());
+    postMessage(new bitjs.archive.UnarchiveFinishEvent());
 };
 
 // event.data.file has the ArrayBuffer.
 onmessage = function(event) {
-  var ab = event.data.file;
+    var ab = event.data.file;
-  untar(ab);
+    untar(ab);
 };