@syncfusion/ej2-pdfviewer
Version:
Essential JS 2 PDF viewer Component
1,206 lines (1,191 loc) • 210 kB
JavaScript
var PDFiumModule = (() => {
var _scriptDir = typeof document !== 'undefined' && document.currentScript ? document.currentScript.src : undefined;
if (typeof __filename !== 'undefined')
_scriptDir = _scriptDir || __filename;
return (function (PDFiumModule = {}) {
var Module = typeof PDFiumModule != "undefined" ? PDFiumModule : {};
var ENVIRONMENT_IS_WEB = typeof window == "object";
var ENVIRONMENT_IS_WORKER = typeof WorkerGlobalScope != "undefined";
var ENVIRONMENT_IS_NODE = typeof process == "object" && process.versions && process.versions.node && process.type != "renderer";
var arguments_ = [];
var thisProgram = "./this.program";
var quit_ = (status, toThrow) => {
throw toThrow
};
var _scriptName = typeof document != "undefined" ? document.currentScript && document.currentScript.src : undefined;
if (typeof __filename != "undefined") {
_scriptName = __filename
} else if (ENVIRONMENT_IS_WORKER) {
_scriptName = self.location.href
}
var scriptDirectory = "";
function locateFile(path) {
if (Module["locateFile"]) {
return Module["locateFile"](path, scriptDirectory)
}
return scriptDirectory + path
}
var readAsync, readBinary;
if (ENVIRONMENT_IS_NODE) {
var fs = require("fs");
scriptDirectory = __dirname + "/";
readBinary = filename => {
filename = isFileURI(filename) ? new URL(filename) : filename;
var ret = fs.readFileSync(filename);
return ret
};
readAsync = async (filename, binary = true) => {
filename = isFileURI(filename) ? new URL(filename) : filename;
var ret = fs.readFileSync(filename, binary ? undefined : "utf8");
return ret
};
if (process.argv.length > 1) {
thisProgram = process.argv[1].replace(/\\/g, "/")
}
arguments_ = process.argv.slice(2);
if (typeof module != "undefined") {
module["exports"] = Module
}
quit_ = (status, toThrow) => {
process.exitCode = status;
throw toThrow
}
} else if (ENVIRONMENT_IS_WEB || ENVIRONMENT_IS_WORKER) {
try {
scriptDirectory = new URL(".", _scriptName).href
} catch {} {
if (ENVIRONMENT_IS_WORKER) {
readBinary = url => {
var xhr = new XMLHttpRequest;
xhr.open("GET", url, false);
xhr.responseType = "arraybuffer";
xhr.send(null);
return new Uint8Array(xhr.response)
}
}
readAsync = async url => {
if (isFileURI(url)) {
return new Promise((resolve, reject) => {
var xhr = new XMLHttpRequest;
xhr.open("GET", url, true);
xhr.responseType = "arraybuffer";
xhr.onload = () => {
if (xhr.status == 200 || xhr.status == 0 && xhr.response) {
resolve(xhr.response);
return
}
reject(xhr.status)
};
xhr.onerror = reject;
xhr.send(null)
})
}
var response = await fetch(url, {
credentials: "same-origin"
});
if (response.ok) {
return response.arrayBuffer()
}
throw new Error(response.status + " : " + response.url)
}
}
} else {}
var out = console.log.bind(console);
var err = console.error.bind(console);
var wasmBinary;
var ABORT = false;
var isFileURI = filename => filename.startsWith("file://");
var wasmMemory;
var HEAP8, HEAPU8, HEAP16, HEAPU16, HEAP32, HEAPU32, HEAPF32, HEAPF64;
var HEAP64, HEAPU64;
var runtimeInitialized = false;
function updateMemoryViews() {
var b = wasmMemory.buffer;
Module["HEAP8"] = HEAP8 = new Int8Array(b);
Module["HEAP16"] = HEAP16 = new Int16Array(b);
Module["HEAPU8"] = HEAPU8 = new Uint8Array(b);
Module["HEAPU16"] = HEAPU16 = new Uint16Array(b);
Module["HEAP32"] = HEAP32 = new Int32Array(b);
Module["HEAPU32"] = HEAPU32 = new Uint32Array(b);
Module["HEAPF32"] = HEAPF32 = new Float32Array(b);
Module["HEAPF64"] = HEAPF64 = new Float64Array(b);
Module["HEAP64"] = HEAP64 = new BigInt64Array(b);
Module["HEAPU64"] = HEAPU64 = new BigUint64Array(b)
}
function preRun() {
if (Module["preRun"]) {
if (typeof Module["preRun"] == "function") Module["preRun"] = [Module["preRun"]];
while (Module["preRun"].length) {
addOnPreRun(Module["preRun"].shift())
}
}
callRuntimeCallbacks(onPreRuns)
}
function initRuntime() {
runtimeInitialized = true;
if (!Module["noFSInit"] && !FS.initialized) FS.init();
TTY.init();
wasmExports["__wasm_call_ctors"]();
FS.ignorePermissions = false
}
function postRun() {
if (Module["postRun"]) {
if (typeof Module["postRun"] == "function") Module["postRun"] = [Module["postRun"]];
while (Module["postRun"].length) {
addOnPostRun(Module["postRun"].shift())
}
}
callRuntimeCallbacks(onPostRuns)
}
var runDependencies = 0;
var dependenciesFulfilled = null;
function addRunDependency(id) {
runDependencies++;
if(Module["monitorRunDependencies"]){
Module["monitorRunDependencies"](runDependencies)
}
}
function removeRunDependency(id) {
runDependencies--;
if (Module["monitorRunDependencies"]) {
Module["monitorRunDependencies"](runDependencies);
}
if (runDependencies == 0) {
if (dependenciesFulfilled) {
var callback = dependenciesFulfilled;
dependenciesFulfilled = null;
callback()
}
}
}
function abort(what) {
if (Module["onAbort"]) {
Module["onAbort"](what)
}
what = "Aborted(" + what + ")";
err(what);
ABORT = true;
what += ". Build with -sASSERTIONS for more info.";
var e = new WebAssembly.RuntimeError(what);
throw e
}
var dataURIPrefix = "data:application/octet-stream;base64,";
function isDataURI(filename) {
return filename.startsWith(dataURIPrefix)
}
var wasmBinaryFile;
function findWasmBinary() {
var wasmBinaryFile;
if (PDFiumModule.url) {
wasmBinaryFile = PDFiumModule.url + '/pdfium.wasm';
}
else {
wasmBinaryFile = 'pdfium.wasm';
}
if (!isDataURI(wasmBinaryFile)) {
wasmBinaryFile = locateFile(wasmBinaryFile)
}
return locateFile(wasmBinaryFile)
}
function getBinarySync(file) {
if (file == wasmBinaryFile && wasmBinary) {
return new Uint8Array(wasmBinary)
}
if (readBinary) {
return readBinary(file)
}
throw "both async and sync fetching of the wasm failed"
}
async function getWasmBinary(binaryFile) {
if (!wasmBinary) {
try {
var response = await readAsync(binaryFile);
return new Uint8Array(response)
} catch {}
}
return getBinarySync(binaryFile)
}
async function instantiateArrayBuffer(binaryFile, imports) {
try {
var binary = await getWasmBinary(binaryFile);
var instance = await WebAssembly.instantiate(binary, imports);
return instance
} catch (reason) {
err(`failed to asynchronously prepare wasm: ${reason}`);
abort(reason)
}
}
async function instantiateAsync(binary, binaryFile, imports) {
if (!binary && typeof WebAssembly.instantiateStreaming == "function" && !isFileURI(binaryFile) && !ENVIRONMENT_IS_NODE) {
try {
var response = fetch(binaryFile, {
credentials: "same-origin"
});
var instantiationResult = await WebAssembly.instantiateStreaming(response, imports);
return instantiationResult
} catch (reason) {
err(`wasm streaming compile failed: ${reason}`);
err("falling back to ArrayBuffer instantiation")
}
}
return instantiateArrayBuffer(binaryFile, imports)
}
function getWasmImports() {
return {
env: wasmImports,
wasi_snapshot_preview1: wasmImports
}
}
async function createWasm() {
function receiveInstance(instance, module) {
wasmExports = instance.exports;
wasmExports = applySignatureConversions(wasmExports);
wasmMemory = wasmExports["memory"];
updateMemoryViews();
wasmTable = wasmExports["__indirect_function_table"];
assignWasmExports(wasmExports);
removeRunDependency("wasm-instantiate");
return wasmExports
}
addRunDependency("wasm-instantiate");
function receiveInstantiationResult(result) {
return receiveInstance(result["instance"])
}
var info = getWasmImports();
if (Module["instantiateWasm"]) {
return new Promise((resolve, reject) => {
Module["instantiateWasm"](info, (mod, inst) => {
resolve(receiveInstance(mod, inst))
})
})
}
wasmBinaryFile = findWasmBinary();
var result = await instantiateAsync(wasmBinary, wasmBinaryFile, info);
var exports = receiveInstantiationResult(result);
return exports
}
class ExitStatus {
name = "ExitStatus";
constructor(status) {
this.message = `Program terminated with exit(${status})`;
this.status = status
}
}
var callRuntimeCallbacks = callbacks => {
while (callbacks.length > 0) {
callbacks.shift()(Module)
}
};
var onPostRuns = [];
var addOnPostRun = cb => onPostRuns.push(cb);
var onPreRuns = [];
var addOnPreRun = cb => onPreRuns.push(cb);
var noExitRuntime = true;
function setValue(ptr, value, type = "i8") {
if (type.endsWith("*")) type = "*";
switch (type) {
case "i1":
HEAP8[ptr >>> 0] = value;
break;
case "i8":
HEAP8[ptr >>> 0] = value;
break;
case "i16":
HEAP16[ptr >>> 1 >>> 0] = value;
break;
case "i32":
HEAP32[ptr >>> 2 >>> 0] = value;
break;
case "i64":
HEAP64[ptr >>> 3 >>> 0] = BigInt(value);
break;
case "float":
HEAPF32[ptr >>> 2 >>> 0] = value;
break;
case "double":
HEAPF64[ptr >>> 3 >>> 0] = value;
break;
case "*":
HEAPU32[ptr >>> 2 >>> 0] = value;
break;
default:
abort(`invalid type for setValue: ${type}`)
}
}
var stackRestore = val => __emscripten_stack_restore(val);
var stackSave = () => _emscripten_stack_get_current();
var syscallGetVarargI = () => {
var ret = HEAP32[+SYSCALLS.varargs >>> 2 >>> 0];
SYSCALLS.varargs += 4;
return ret
};
var syscallGetVarargP = syscallGetVarargI;
var PATH = {
isAbs: path => path.charAt(0) === "/",
splitPath: filename => {
var splitPathRe = /^(\/?|)([\s\S]*?)((?:\.{1,2}|[^\/]+?|)(\.[^.\/]*|))(?:[\/]*)$/;
return splitPathRe.exec(filename).slice(1)
},
normalizeArray: (parts, allowAboveRoot) => {
var up = 0;
for (var i = parts.length - 1; i >= 0; i--) {
var last = parts[i];
if (last === ".") {
parts.splice(i, 1)
} else if (last === "..") {
parts.splice(i, 1);
up++
} else if (up) {
parts.splice(i, 1);
up--
}
}
if (allowAboveRoot) {
for (; up; up--) {
parts.unshift("..")
}
}
return parts
},
normalize: path => {
var isAbsolute = PATH.isAbs(path),
trailingSlash = path.slice(-1) === "/";
path = PATH.normalizeArray(path.split("/").filter(p => !!p), !isAbsolute).join("/");
if (!path && !isAbsolute) {
path = "."
}
if (path && trailingSlash) {
path += "/"
}
return (isAbsolute ? "/" : "") + path
},
dirname: path => {
var result = PATH.splitPath(path),
root = result[0],
dir = result[1];
if (!root && !dir) {
return "."
}
if (dir) {
dir = dir.slice(0, -1)
}
return root + dir
},
basename: path => path && path.match(/([^\/]+|\/)\/*$/)[1],
join: (...paths) => PATH.normalize(paths.join("/")),
join2: (l, r) => PATH.normalize(l + "/" + r)
};
var initRandomFill = () => {
if (ENVIRONMENT_IS_NODE) {
var nodeCrypto = require("crypto");
return view => nodeCrypto.randomFillSync(view)
}
return view => crypto.getRandomValues(view)
};
var randomFill = view => {
(randomFill = initRandomFill())(view)
};
var PATH_FS = {
resolve: (...args) => {
var resolvedPath = "",
resolvedAbsolute = false;
for (var i = args.length - 1; i >= -1 && !resolvedAbsolute; i--) {
var path = i >= 0 ? args[i] : FS.cwd();
if (typeof path != "string") {
throw new TypeError("Arguments to path.resolve must be strings")
} else if (!path) {
return ""
}
resolvedPath = path + "/" + resolvedPath;
resolvedAbsolute = PATH.isAbs(path)
}
resolvedPath = PATH.normalizeArray(resolvedPath.split("/").filter(p => !!p), !resolvedAbsolute).join("/");
return (resolvedAbsolute ? "/" : "") + resolvedPath || "."
},
relative: (from, to) => {
from = PATH_FS.resolve(from).slice(1);
to = PATH_FS.resolve(to).slice(1);
function trim(arr) {
var start = 0;
for (; start < arr.length; start++) {
if (arr[start] !== "") break
}
var end = arr.length - 1;
for (; end >= 0; end--) {
if (arr[end] !== "") break
}
if (start > end) return [];
return arr.slice(start, end - start + 1)
}
var fromParts = trim(from.split("/"));
var toParts = trim(to.split("/"));
var length = Math.min(fromParts.length, toParts.length);
var samePartsLength = length;
for (var i = 0; i < length; i++) {
if (fromParts[i] !== toParts[i]) {
samePartsLength = i;
break
}
}
var outputParts = [];
for (var i = samePartsLength; i < fromParts.length; i++) {
outputParts.push("..")
}
outputParts = outputParts.concat(toParts.slice(samePartsLength));
return outputParts.join("/")
}
};
var UTF8Decoder = typeof TextDecoder != "undefined" ? new TextDecoder : undefined;
var UTF8ArrayToString = (heapOrArray, idx = 0, maxBytesToRead = NaN) => {
idx >>>= 0;
var endIdx = idx + maxBytesToRead;
var endPtr = idx;
while (heapOrArray[endPtr] && !(endPtr >= endIdx)) ++endPtr;
if (endPtr - idx > 16 && heapOrArray.buffer && UTF8Decoder) {
return UTF8Decoder.decode(heapOrArray.subarray(idx, endPtr))
}
var str = "";
while (idx < endPtr) {
var u0 = heapOrArray[idx++];
if (!(u0 & 128)) {
str += String.fromCharCode(u0);
continue
}
var u1 = heapOrArray[idx++] & 63;
if ((u0 & 224) == 192) {
str += String.fromCharCode((u0 & 31) << 6 | u1);
continue
}
var u2 = heapOrArray[idx++] & 63;
if ((u0 & 240) == 224) {
u0 = (u0 & 15) << 12 | u1 << 6 | u2
} else {
u0 = (u0 & 7) << 18 | u1 << 12 | u2 << 6 | heapOrArray[idx++] & 63
}
if (u0 < 65536) {
str += String.fromCharCode(u0)
} else {
var ch = u0 - 65536;
str += String.fromCharCode(55296 | ch >> 10, 56320 | ch & 1023)
}
}
return str
};
var FS_stdin_getChar_buffer = [];
var lengthBytesUTF8 = str => {
var len = 0;
for (var i = 0; i < str.length; ++i) {
var c = str.charCodeAt(i);
if (c <= 127) {
len++
} else if (c <= 2047) {
len += 2
} else if (c >= 55296 && c <= 57343) {
len += 4;
++i
} else {
len += 3
}
}
return len
};
var stringToUTF8Array = (str, heap, outIdx, maxBytesToWrite) => {
outIdx >>>= 0;
if (!(maxBytesToWrite > 0)) return 0;
var startIdx = outIdx;
var endIdx = outIdx + maxBytesToWrite - 1;
for (var i = 0; i < str.length; ++i) {
var u = str.codePointAt(i);
if (u <= 127) {
if (outIdx >= endIdx) break;
heap[outIdx++ >>> 0] = u
} else if (u <= 2047) {
if (outIdx + 1 >= endIdx) break;
heap[outIdx++ >>> 0] = 192 | u >> 6;
heap[outIdx++ >>> 0] = 128 | u & 63
} else if (u <= 65535) {
if (outIdx + 2 >= endIdx) break;
heap[outIdx++ >>> 0] = 224 | u >> 12;
heap[outIdx++ >>> 0] = 128 | u >> 6 & 63;
heap[outIdx++ >>> 0] = 128 | u & 63
} else {
if (outIdx + 3 >= endIdx) break;
heap[outIdx++ >>> 0] = 240 | u >> 18;
heap[outIdx++ >>> 0] = 128 | u >> 12 & 63;
heap[outIdx++ >>> 0] = 128 | u >> 6 & 63;
heap[outIdx++ >>> 0] = 128 | u & 63;
i++
}
}
heap[outIdx >>> 0] = 0;
return outIdx - startIdx
};
var intArrayFromString = (stringy, dontAddNull, length) => {
var len = length > 0 ? length : lengthBytesUTF8(stringy) + 1;
var u8array = new Array(len);
var numBytesWritten = stringToUTF8Array(stringy, u8array, 0, u8array.length);
if (dontAddNull) u8array.length = numBytesWritten;
return u8array
};
var FS_stdin_getChar = () => {
if (!FS_stdin_getChar_buffer.length) {
var result = null;
if (ENVIRONMENT_IS_NODE) {
var BUFSIZE = 256;
var buf = Buffer.alloc(BUFSIZE);
var bytesRead = 0;
var fd = process.stdin.fd;
try {
bytesRead = fs.readSync(fd, buf, 0, BUFSIZE)
} catch (e) {
if (e.toString().includes("EOF")) bytesRead = 0;
else throw e
}
if (bytesRead > 0) {
result = buf.slice(0, bytesRead).toString("utf-8")
}
} else if (typeof window != "undefined" && typeof window.prompt == "function") {
result = window.prompt("Input: ");
if (result !== null) {
result += "\n"
}
} else {}
if (!result) {
return null
}
FS_stdin_getChar_buffer = intArrayFromString(result, true)
}
return FS_stdin_getChar_buffer.shift()
};
var TTY = {
ttys: [],
init() {},
shutdown() {},
register(dev, ops) {
TTY.ttys[dev] = {
input: [],
output: [],
ops
};
FS.registerDevice(dev, TTY.stream_ops)
},
stream_ops: {
open(stream) {
var tty = TTY.ttys[stream.node.rdev];
if (!tty) {
throw new FS.ErrnoError(43)
}
stream.tty = tty;
stream.seekable = false
},
close(stream) {
stream.tty.ops.fsync(stream.tty)
},
fsync(stream) {
stream.tty.ops.fsync(stream.tty)
},
read(stream, buffer, offset, length, pos) {
if (!stream.tty || !stream.tty.ops.get_char) {
throw new FS.ErrnoError(60)
}
var bytesRead = 0;
for (var i = 0; i < length; i++) {
var result;
try {
result = stream.tty.ops.get_char(stream.tty)
} catch (e) {
throw new FS.ErrnoError(29)
}
if (result === undefined && bytesRead === 0) {
throw new FS.ErrnoError(6)
}
if (result === null || result === undefined) break;
bytesRead++;
buffer[offset + i] = result
}
if (bytesRead) {
stream.node.atime = Date.now()
}
return bytesRead
},
write(stream, buffer, offset, length, pos) {
if (!stream.tty || !stream.tty.ops.put_char) {
throw new FS.ErrnoError(60)
}
try {
for (var i = 0; i < length; i++) {
stream.tty.ops.put_char(stream.tty, buffer[offset + i])
}
} catch (e) {
throw new FS.ErrnoError(29)
}
if (length) {
stream.node.mtime = stream.node.ctime = Date.now()
}
return i
}
},
default_tty_ops: {
get_char(tty) {
return FS_stdin_getChar()
},
put_char(tty, val) {
if (val === null || val === 10) {
out(UTF8ArrayToString(tty.output));
tty.output = []
} else {
if (val != 0) tty.output.push(val)
}
},
fsync(tty) {
if (tty.output && tty.output.length > 0) {
out(UTF8ArrayToString(tty.output));
tty.output = []
}
},
ioctl_tcgets(tty) {
return {
c_iflag: 25856,
c_oflag: 5,
c_cflag: 191,
c_lflag: 35387,
c_cc: [3, 28, 127, 21, 4, 0, 1, 0, 17, 19, 26, 0, 18, 15, 23, 22, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
}
},
ioctl_tcsets(tty, optional_actions, data) {
return 0
},
ioctl_tiocgwinsz(tty) {
return [24, 80]
}
},
default_tty1_ops: {
put_char(tty, val) {
if (val === null || val === 10) {
err(UTF8ArrayToString(tty.output));
tty.output = []
} else {
if (val != 0) tty.output.push(val)
}
},
fsync(tty) {
if (tty.output && tty.output.length > 0) {
err(UTF8ArrayToString(tty.output));
tty.output = []
}
}
}
};
var zeroMemory = (ptr, size) => HEAPU8.fill(0, ptr, ptr + size);
var alignMemory = (size, alignment) => Math.ceil(size / alignment) * alignment;
var mmapAlloc = size => {
size = alignMemory(size, 65536);
var ptr = _emscripten_builtin_memalign(65536, size);
if (ptr) zeroMemory(ptr, size);
return ptr
};
var MEMFS = {
ops_table: null,
mount(mount) {
return MEMFS.createNode(null, "/", 16895, 0)
},
createNode(parent, name, mode, dev) {
if (FS.isBlkdev(mode) || FS.isFIFO(mode)) {
throw new FS.ErrnoError(63)
}
MEMFS.ops_table = {
dir: {
node: {
getattr: MEMFS.node_ops.getattr,
setattr: MEMFS.node_ops.setattr,
lookup: MEMFS.node_ops.lookup,
mknod: MEMFS.node_ops.mknod,
rename: MEMFS.node_ops.rename,
unlink: MEMFS.node_ops.unlink,
rmdir: MEMFS.node_ops.rmdir,
readdir: MEMFS.node_ops.readdir,
symlink: MEMFS.node_ops.symlink
},
stream: {
llseek: MEMFS.stream_ops.llseek
}
},
file: {
node: {
getattr: MEMFS.node_ops.getattr,
setattr: MEMFS.node_ops.setattr
},
stream: {
llseek: MEMFS.stream_ops.llseek,
read: MEMFS.stream_ops.read,
write: MEMFS.stream_ops.write,
mmap: MEMFS.stream_ops.mmap,
msync: MEMFS.stream_ops.msync
}
},
link: {
node: {
getattr: MEMFS.node_ops.getattr,
setattr: MEMFS.node_ops.setattr,
readlink: MEMFS.node_ops.readlink
},
stream: {}
},
chrdev: {
node: {
getattr: MEMFS.node_ops.getattr,
setattr: MEMFS.node_ops.setattr
},
stream: FS.chrdev_stream_ops
}
};
var node = FS.createNode(parent, name, mode, dev);
if (FS.isDir(node.mode)) {
node.node_ops = MEMFS.ops_table.dir.node;
node.stream_ops = MEMFS.ops_table.dir.stream;
node.contents = {}
} else if (FS.isFile(node.mode)) {
node.node_ops = MEMFS.ops_table.file.node;
node.stream_ops = MEMFS.ops_table.file.stream;
node.usedBytes = 0;
node.contents = null
} else if (FS.isLink(node.mode)) {
node.node_ops = MEMFS.ops_table.link.node;
node.stream_ops = MEMFS.ops_table.link.stream
} else if (FS.isChrdev(node.mode)) {
node.node_ops = MEMFS.ops_table.chrdev.node;
node.stream_ops = MEMFS.ops_table.chrdev.stream
}
node.atime = node.mtime = node.ctime = Date.now();
if (parent) {
parent.contents[name] = node;
parent.atime = parent.mtime = parent.ctime = node.atime
}
return node
},
getFileDataAsTypedArray(node) {
if (!node.contents) return new Uint8Array(0);
if (node.contents.subarray) return node.contents.subarray(0, node.usedBytes);
return new Uint8Array(node.contents)
},
expandFileStorage(node, newCapacity) {
var prevCapacity = node.contents ? node.contents.length : 0;
if (prevCapacity >= newCapacity) return;
var CAPACITY_DOUBLING_MAX = 1024 * 1024;
newCapacity = Math.max(newCapacity, prevCapacity * (prevCapacity < CAPACITY_DOUBLING_MAX ? 2 : 1.125) >>> 0);
if (prevCapacity != 0) newCapacity = Math.max(newCapacity, 256);
var oldContents = node.contents;
node.contents = new Uint8Array(newCapacity);
if (node.usedBytes > 0) node.contents.set(oldContents.subarray(0, node.usedBytes), 0)
},
resizeFileStorage(node, newSize) {
if (node.usedBytes == newSize) return;
if (newSize == 0) {
node.contents = null;
node.usedBytes = 0
} else {
var oldContents = node.contents;
node.contents = new Uint8Array(newSize);
if (oldContents) {
node.contents.set(oldContents.subarray(0, Math.min(newSize, node.usedBytes)))
}
node.usedBytes = newSize
}
},
node_ops: {
getattr(node) {
var attr = {};
attr.dev = FS.isChrdev(node.mode) ? node.id : 1;
attr.ino = node.id;
attr.mode = node.mode;
attr.nlink = 1;
attr.uid = 0;
attr.gid = 0;
attr.rdev = node.rdev;
if (FS.isDir(node.mode)) {
attr.size = 4096
} else if (FS.isFile(node.mode)) {
attr.size = node.usedBytes
} else if (FS.isLink(node.mode)) {
attr.size = node.link.length
} else {
attr.size = 0
}
attr.atime = new Date(node.atime);
attr.mtime = new Date(node.mtime);
attr.ctime = new Date(node.ctime);
attr.blksize = 4096;
attr.blocks = Math.ceil(attr.size / attr.blksize);
return attr
},
setattr(node, attr) {
for (const key of ["mode", "atime", "mtime", "ctime"]) {
if (attr[key] != null) {
node[key] = attr[key]
}
}
if (attr.size !== undefined) {
MEMFS.resizeFileStorage(node, attr.size)
}
},
lookup(parent, name) {
throw MEMFS.doesNotExistError
},
mknod(parent, name, mode, dev) {
return MEMFS.createNode(parent, name, mode, dev)
},
rename(old_node, new_dir, new_name) {
var new_node;
try {
new_node = FS.lookupNode(new_dir, new_name)
} catch (e) {}
if (new_node) {
if (FS.isDir(old_node.mode)) {
for (var i in new_node.contents) {
throw new FS.ErrnoError(55)
}
}
FS.hashRemoveNode(new_node)
}
delete old_node.parent.contents[old_node.name];
new_dir.contents[new_name] = old_node;
old_node.name = new_name;
new_dir.ctime = new_dir.mtime = old_node.parent.ctime = old_node.parent.mtime = Date.now()
},
unlink(parent, name) {
delete parent.contents[name];
parent.ctime = parent.mtime = Date.now()
},
rmdir(parent, name) {
var node = FS.lookupNode(parent, name);
for (var i in node.contents) {
throw new FS.ErrnoError(55)
}
delete parent.contents[name];
parent.ctime = parent.mtime = Date.now()
},
readdir(node) {
return [".", "..", ...Object.keys(node.contents)]
},
symlink(parent, newname, oldpath) {
var node = MEMFS.createNode(parent, newname, 511 | 40960, 0);
node.link = oldpath;
return node
},
readlink(node) {
if (!FS.isLink(node.mode)) {
throw new FS.ErrnoError(28)
}
return node.link
}
},
stream_ops: {
read(stream, buffer, offset, length, position) {
var contents = stream.node.contents;
if (position >= stream.node.usedBytes) return 0;
var size = Math.min(stream.node.usedBytes - position, length);
if (size > 8 && contents.subarray) {
buffer.set(contents.subarray(position, position + size), offset)
} else {
for (var i = 0; i < size; i++) buffer[offset + i] = contents[position + i]
}
return size
},
write(stream, buffer, offset, length, position, canOwn) {
if (buffer.buffer === HEAP8.buffer) {
canOwn = false
}
if (!length) return 0;
var node = stream.node;
node.mtime = node.ctime = Date.now();
if (buffer.subarray && (!node.contents || node.contents.subarray)) {
if (canOwn) {
node.contents = buffer.subarray(offset, offset + length);
node.usedBytes = length;
return length
} else if (node.usedBytes === 0 && position === 0) {
node.contents = buffer.slice(offset, offset + length);
node.usedBytes = length;
return length
} else if (position + length <= node.usedBytes) {
node.contents.set(buffer.subarray(offset, offset + length), position);
return length
}
}
MEMFS.expandFileStorage(node, position + length);
if (node.contents.subarray && buffer.subarray) {
node.contents.set(buffer.subarray(offset, offset + length), position)
} else {
for (var i = 0; i < length; i++) {
node.contents[position + i] = buffer[offset + i]
}
}
node.usedBytes = Math.max(node.usedBytes, position + length);
return length
},
llseek(stream, offset, whence) {
var position = offset;
if (whence === 1) {
position += stream.position
} else if (whence === 2) {
if (FS.isFile(stream.node.mode)) {
position += stream.node.usedBytes
}
}
if (position < 0) {
throw new FS.ErrnoError(28)
}
return position
},
mmap(stream, length, position, prot, flags) {
if (!FS.isFile(stream.node.mode)) {
throw new FS.ErrnoError(43)
}
var ptr;
var allocated;
var contents = stream.node.contents;
if (!(flags & 2) && contents && contents.buffer === HEAP8.buffer) {
allocated = false;
ptr = contents.byteOffset
} else {
allocated = true;
ptr = mmapAlloc(length);
if (!ptr) {
throw new FS.ErrnoError(48)
}
if (contents) {
if (position > 0 || position + length < contents.length) {
if (contents.subarray) {
contents = contents.subarray(position, position + length)
} else {
contents = Array.prototype.slice.call(contents, position, position + length)
}
}
HEAP8.set(contents, ptr >>> 0)
}
}
return {
ptr,
allocated
}
},
msync(stream, buffer, offset, length, mmapFlags) {
MEMFS.stream_ops.write(stream, buffer, 0, length, offset, false);
return 0
}
}
};
var asyncLoad = async url => {
var arrayBuffer = await readAsync(url);
return new Uint8Array(arrayBuffer)
};
var FS_createDataFile = (...args) => FS.createDataFile(...args);
var getUniqueRunDependency = id => id;
var preloadPlugins = [];
var FS_handledByPreloadPlugin = (byteArray, fullname, finish, onerror) => {
if (typeof Browser != "undefined") Browser.init();
var handled = false;
preloadPlugins.forEach(plugin => {
if (handled) return;
if (plugin["canHandle"](fullname)) {
plugin["handle"](byteArray, fullname, finish, onerror);
handled = true
}
});
return handled
};
var FS_createPreloadedFile = (parent, name, url, canRead, canWrite, onload, onerror, dontCreateFile, canOwn, preFinish) => {
var fullname = name ? PATH_FS.resolve(PATH.join2(parent, name)) : parent;
var dep = getUniqueRunDependency(`cp ${fullname}`);
function processData(byteArray) {
function finish(byteArray) {
if(preFinish) preFinish();
if (!dontCreateFile) {
FS_createDataFile(parent, name, byteArray, canRead, canWrite, canOwn)
}
if(onload) onload();
removeRunDependency(dep)
}
if (FS_handledByPreloadPlugin(byteArray, fullname, finish, () => {
if(onerror) onerror();
removeRunDependency(dep)
})) {
return
}
finish(byteArray)
}
addRunDependency(dep);
if (typeof url == "string") {
asyncLoad(url).then(processData, onerror)
} else {
processData(url)
}
};
var FS_modeStringToFlags = str => {
var flagModes = {
r: 0,
"r+": 2,
w: 512 | 64 | 1,
"w+": 512 | 64 | 2,
a: 1024 | 64 | 1,
"a+": 1024 | 64 | 2
};
var flags = flagModes[str];
if (typeof flags == "undefined") {
throw new Error(`Unknown file open mode: ${str}`)
}
return flags
};
var FS_getMode = (canRead, canWrite) => {
var mode = 0;
if (canRead) mode |= 292 | 73;
if (canWrite) mode |= 146;
return mode
};
var FS = {
root: null,
mounts: [],
devices: {},
streams: [],
nextInode: 1,
nameTable: null,
currentPath: "/",
initialized: false,
ignorePermissions: true,
filesystems: null,
syncFSRequests: 0,
readFiles: {},
ErrnoError: class {
name = "ErrnoError";
constructor(errno) {
this.errno = errno
}
},
FSStream: class {
shared = {};
get object() {
return this.node
}
set object(val) {
this.node = val
}
get isRead() {
return (this.flags & 2097155) !== 1
}
get isWrite() {
return (this.flags & 2097155) !== 0
}
get isAppend() {
return this.flags & 1024
}
get flags() {
return this.shared.flags
}
set flags(val) {
this.shared.flags = val
}
get position() {
return this.shared.position
}
set position(val) {
this.shared.position = val
}
},
FSNode: class {
node_ops = {};
stream_ops = {};
readMode = 292 | 73;
writeMode = 146;
mounted = null;
constructor(parent, name, mode, rdev) {
if (!parent) {
parent = this
}
this.parent = parent;
this.mount = parent.mount;
this.id = FS.nextInode++;
this.name = name;
this.mode = mode;
this.rdev = rdev;
this.atime = this.mtime = this.ctime = Date.now()
}
get read() {
return (this.mode & this.readMode) === this.readMode
}
set read(val) {
val ? this.mode |= this.readMode : this.mode &= ~this.readMode
}
get write() {
return (this.mode & this.writeMode) === this.writeMode
}
set write(val) {
val ? this.mode |= this.writeMode : this.mode &= ~this.writeMode
}
get isFolder() {
return FS.isDir(this.mode)
}
get isDevice() {
return FS.isChrdev(this.mode)
}
},
lookupPath(path, opts = {}) {
if (!path) {
throw new FS.ErrnoError(44)
}
opts.follow_mount = true;
if (!PATH.isAbs(path)) {
path = FS.cwd() + "/" + path
}
linkloop: for (var nlinks = 0; nlinks < 40; nlinks++) {
var parts = path.split("/").filter(p => !!p);
var current = FS.root;
var current_path = "/";
for (var i = 0; i < parts.length; i++) {
var islast = i === parts.length - 1;
if (islast && opts.parent) {
break
}
if (parts[i] === ".") {
continue
}
if (parts[i] === "..") {
current_path = PATH.dirname(current_path);
if (FS.isRoot(current)) {
path = current_path + "/" + parts.slice(i + 1).join("/");
continue linkloop
} else {
current = current.parent
}
continue
}
current_path = PATH.join2(current_path, parts[i]);
try {
current = FS.lookupNode(current, parts[i])
} catch (e) {
if (e && e.errno === 44 && islast && opts.noent_okay) {
return {
path: current_path
}
}
throw e
}
if (FS.isMountpoint(current) && (!islast || opts.follow_mount)) {
current = current.mounted.root
}
if (FS.isLink(current.mode) && (!islast || opts.follow)) {
if (!current.node_ops.readlink) {
throw new FS.ErrnoError(52)
}
var link = current.node_ops.readlink(current);
if (!PATH.isAbs(link)) {
link = PATH.dirname(current_path) + "/" + link
}
path = link + "/" + parts.slice(i + 1).join("/");
continue linkloop
}
}
return {
path: current_path,
node: current
}
}