708 lines
19 KiB
Haxe
708 lines
19 KiB
Haxe
/*
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* Copyright (C)2005-2019 Haxe Foundation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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package haxe.io;
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#if cpp
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using cpp.NativeArray;
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#end
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class Bytes {
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public var length(default, null):Int;
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var b:BytesData;
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function new(length, b) {
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this.length = length;
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this.b = b;
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#if flash
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b.endian = flash.utils.Endian.LITTLE_ENDIAN;
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#end
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}
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/**
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Returns the byte at index `pos`.
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**/
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public inline function get(pos:Int):Int {
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#if neko
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return untyped $sget(b, pos);
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#elseif flash
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return b[pos];
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#elseif cpp
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return untyped b[pos];
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#elseif java
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return untyped b[pos] & 0xFF;
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#elseif python
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return python.Syntax.arrayAccess(b, pos);
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#else
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return b[pos];
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#end
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}
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/**
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Stores the given byte `v` at the given position `pos`.
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**/
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public inline function set(pos:Int, v:Int):Void {
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#if neko
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untyped $sset(b, pos, v);
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#elseif flash
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b[pos] = v;
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#elseif cpp
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untyped b[pos] = v;
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#elseif java
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b[pos] = cast v;
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#elseif cs
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b[pos] = cast v;
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#elseif python
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python.Syntax.arraySet(b, pos, v & 0xFF);
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#else
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b[pos] = v & 0xFF;
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#end
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}
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/**
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Copies `len` bytes from `src` into this instance.
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@param pos Zero-based location in `this` instance at which to start writing
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bytes.
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@param src Source `Bytes` instance from which to copy bytes.
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@param srcpos Zero-based location at `src` from which bytes will be copied.
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@param len Number of bytes to be copied.
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**/
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public function blit(pos:Int, src:Bytes, srcpos:Int, len:Int):Void {
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#if !neko
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if (pos < 0 || srcpos < 0 || len < 0 || pos + len > length || srcpos + len > src.length)
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throw Error.OutsideBounds;
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#end
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#if neko
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try
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untyped $sblit(b, pos, src.b, srcpos, len)
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catch (e:Dynamic)
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throw Error.OutsideBounds;
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#elseif flash
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b.position = pos;
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if (len > 0)
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b.writeBytes(src.b, srcpos, len);
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#elseif java
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java.lang.System.arraycopy(src.b, srcpos, b, pos, len);
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#elseif cs
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cs.system.Array.Copy(src.b, srcpos, b, pos, len);
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#elseif python
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python.Syntax.code("self.b[{0}:{0}+{1}] = src.b[srcpos:srcpos+{1}]", pos, len);
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#elseif cpp
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b.blit(pos, src.b, srcpos, len);
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#else
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var b1 = b;
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var b2 = src.b;
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if (b1 == b2 && pos > srcpos) {
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var i = len;
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while (i > 0) {
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i--;
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b1[i + pos] = b2[i + srcpos];
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}
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return;
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}
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for (i in 0...len)
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b1[i + pos] = b2[i + srcpos];
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#end
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}
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/**
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Sets `len` consecutive bytes starting from index `pos` of `this` instance
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to `value`.
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**/
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public function fill(pos:Int, len:Int, value:Int) {
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#if flash
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var v4 = value & 0xFF;
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v4 |= v4 << 8;
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v4 |= v4 << 16;
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b.position = pos;
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for (i in 0...len >> 2)
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b.writeUnsignedInt(v4);
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pos += len & ~3;
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for (i in 0...len & 3)
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set(pos++, value);
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#elseif cpp
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untyped __global__.__hxcpp_memory_memset(b, pos, len, value);
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#else
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for (i in 0...len)
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set(pos++, value);
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#end
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}
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/**
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Returns a new `Bytes` instance that contains a copy of `len` bytes of
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`this` instance, starting at index `pos`.
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**/
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public function sub(pos:Int, len:Int):Bytes {
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#if !neko
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if (pos < 0 || len < 0 || pos + len > length)
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throw Error.OutsideBounds;
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#end
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#if neko
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return try new Bytes(len, untyped __dollar__ssub(b, pos, len)) catch (e:Dynamic) throw Error.OutsideBounds;
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#elseif flash
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b.position = pos;
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var b2 = new flash.utils.ByteArray();
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b.readBytes(b2, 0, len);
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return new Bytes(len, b2);
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#elseif java
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var newarr = new java.NativeArray(len);
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java.lang.System.arraycopy(b, pos, newarr, 0, len);
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return new Bytes(len, newarr);
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#elseif cs
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var newarr = new cs.NativeArray(len);
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cs.system.Array.Copy(b, pos, newarr, 0, len);
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return new Bytes(len, newarr);
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#elseif python
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return new Bytes(len, python.Syntax.arrayAccess(b, pos, pos + len));
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#else
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return new Bytes(len, b.slice(pos, pos + len));
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#end
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}
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/**
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Returns `0` if the bytes of `this` instance and the bytes of `other` are
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identical.
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Returns a negative value if the `length` of `this` instance is less than
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the `length` of `other`, or a positive value if the `length` of `this`
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instance is greater than the `length` of `other`.
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In case of equal `length`s, returns a negative value if the first different
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value in `other` is greater than the corresponding value in `this`
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instance; otherwise returns a positive value.
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**/
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public function compare(other:Bytes):Int {
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#if neko
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return untyped __dollar__compare(b, other.b);
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#elseif flash
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var len = (length < other.length) ? length : other.length;
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var b1 = b;
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var b2 = other.b;
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b1.position = 0;
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b2.position = 0;
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b1.endian = flash.utils.Endian.BIG_ENDIAN;
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b2.endian = flash.utils.Endian.BIG_ENDIAN;
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for (i in 0...len >> 2)
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if (b1.readUnsignedInt() != b2.readUnsignedInt()) {
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b1.position -= 4;
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b2.position -= 4;
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var d = b1.readUnsignedInt() - b2.readUnsignedInt();
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b1.endian = flash.utils.Endian.LITTLE_ENDIAN;
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b2.endian = flash.utils.Endian.LITTLE_ENDIAN;
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return d;
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}
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for (i in 0...len & 3)
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if (b1.readUnsignedByte() != b2.readUnsignedByte()) {
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b1.endian = flash.utils.Endian.LITTLE_ENDIAN;
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b2.endian = flash.utils.Endian.LITTLE_ENDIAN;
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return b1[b1.position - 1] - b2[b2.position - 1];
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}
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b1.endian = flash.utils.Endian.LITTLE_ENDIAN;
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b2.endian = flash.utils.Endian.LITTLE_ENDIAN;
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return length - other.length;
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// #elseif cs
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// TODO: memcmp if unsafe flag is on
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#elseif cpp
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return b.memcmp(other.b);
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#else
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var b1 = b;
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var b2 = other.b;
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var len = (length < other.length) ? length : other.length;
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for (i in 0...len)
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if (b1[i] != b2[i])
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return untyped b1[i] - b2[i];
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return length - other.length;
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#end
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}
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/**
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Returns the IEEE double-precision value at the given position `pos` (in
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little-endian encoding). Result is unspecified if `pos` is outside the
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bounds.
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**/
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#if (neko_v21 || (cpp && !cppia) || flash)
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inline
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#end
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public function getDouble(pos:Int):Float {
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#if neko_v21
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return untyped $sgetd(b, pos, false);
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#elseif flash
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b.position = pos;
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return b.readDouble();
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#elseif cpp
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if (pos < 0 || pos + 8 > length)
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throw Error.OutsideBounds;
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return untyped __global__.__hxcpp_memory_get_double(b, pos);
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#else
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return FPHelper.i64ToDouble(getInt32(pos), getInt32(pos + 4));
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#end
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}
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/**
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Returns the IEEE single-precision value at the given position `pos` (in
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little-endian encoding). Result is unspecified if `pos` is outside the
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bounds.
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**/
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#if (neko_v21 || (cpp && !cppia) || flash)
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inline
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#end
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public function getFloat(pos:Int):Float {
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#if neko_v21
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return untyped $sgetf(b, pos, false);
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#elseif flash
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b.position = pos;
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return b.readFloat();
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#elseif cpp
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if (pos < 0 || pos + 4 > length)
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throw Error.OutsideBounds;
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return untyped __global__.__hxcpp_memory_get_float(b, pos);
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#else
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return FPHelper.i32ToFloat(getInt32(pos));
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#end
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}
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/**
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Stores the given IEEE double-precision value `v` at the given position
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`pos` in little-endian encoding. Result is unspecified if writing outside
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of bounds.
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**/
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#if (neko_v21 || flash)
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inline
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#end
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public function setDouble(pos:Int, v:Float):Void {
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#if neko_v21
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untyped $ssetd(b, pos, v, false);
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#elseif neko
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untyped $sblit(b, pos, FPHelper._double_bytes(v, false), 0, 8);
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#elseif flash
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b.position = pos;
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b.writeDouble(v);
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#elseif cpp
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if (pos < 0 || pos + 8 > length)
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throw Error.OutsideBounds;
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untyped __global__.__hxcpp_memory_set_double(b, pos, v);
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#else
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var i = FPHelper.doubleToI64(v);
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setInt32(pos, i.low);
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setInt32(pos + 4, i.high);
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#end
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}
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/**
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Stores the given IEEE single-precision value `v` at the given position
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`pos` in little-endian encoding. Result is unspecified if writing outside
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of bounds.
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**/
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#if (neko_v21 || flash)
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inline
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#end
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public function setFloat(pos:Int, v:Float):Void {
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#if neko_v21
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untyped $ssetf(b, pos, v, false);
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#elseif neko
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untyped $sblit(b, pos, FPHelper._float_bytes(v, false), 0, 4);
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#elseif flash
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b.position = pos;
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b.writeFloat(v);
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#elseif cpp
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if (pos < 0 || pos + 4 > length)
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throw Error.OutsideBounds;
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untyped __global__.__hxcpp_memory_set_float(b, pos, v);
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#else
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setInt32(pos, FPHelper.floatToI32(v));
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#end
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}
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/**
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Returns the 16-bit unsigned integer at the given position `pos` (in
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little-endian encoding).
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**/
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public inline function getUInt16(pos:Int):Int {
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#if neko_v21
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return untyped $sget16(b, pos, false);
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#else
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return get(pos) | (get(pos + 1) << 8);
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#end
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}
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/**
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Stores the given 16-bit unsigned integer `v` at the given position `pos`
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(in little-endian encoding).
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**/
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public inline function setUInt16(pos:Int, v:Int):Void {
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#if neko_v21
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untyped $sset16(b, pos, v, false);
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#else
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set(pos, v);
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set(pos + 1, v >> 8);
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#end
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}
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/**
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Returns the 32-bit integer at the given position `pos` (in little-endian
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encoding).
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**/
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public inline function getInt32(pos:Int):Int {
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#if neko_v21
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return untyped $sget32(b, pos, false);
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#elseif python
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var v = get(pos) | (get(pos + 1) << 8) | (get(pos + 2) << 16) | (get(pos + 3) << 24);
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return if (v & 0x80000000 != 0) v | 0x80000000 else v;
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#elseif lua
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var v = get(pos) | (get(pos + 1) << 8) | (get(pos + 2) << 16) | (get(pos + 3) << 24);
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return lua.Boot.clampInt32(if (v & 0x80000000 != 0) v | 0x80000000 else v);
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#else
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return get(pos) | (get(pos + 1) << 8) | (get(pos + 2) << 16) | (get(pos + 3) << 24);
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#end
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}
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/**
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Returns the 64-bit integer at the given position `pos` (in little-endian
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encoding).
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**/
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public inline function getInt64(pos:Int):haxe.Int64 {
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return haxe.Int64.make(getInt32(pos + 4), getInt32(pos));
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}
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/**
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Stores the given 32-bit integer `v` at the given position `pos` (in
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little-endian encoding).
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**/
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public inline function setInt32(pos:Int, v:Int):Void {
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#if neko_v21
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untyped $sset32(b, pos, v, false);
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#else
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set(pos, v);
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set(pos + 1, v >> 8);
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set(pos + 2, v >> 16);
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set(pos + 3, v >>> 24);
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#end
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}
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/**
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Stores the given 64-bit integer `v` at the given position `pos` (in
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little-endian encoding).
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**/
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public inline function setInt64(pos:Int, v:haxe.Int64):Void {
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setInt32(pos, v.low);
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setInt32(pos + 4, v.high);
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}
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/**
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Returns the `len`-bytes long string stored at the given position `pos`,
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interpreted with the given `encoding` (UTF-8 by default).
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**/
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public function getString(pos:Int, len:Int, ?encoding:Encoding):String {
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if (encoding == null)
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encoding == UTF8;
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#if !neko
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if (pos < 0 || len < 0 || pos + len > length)
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throw Error.OutsideBounds;
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#end
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#if neko
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return try new String(untyped __dollar__ssub(b, pos, len)) catch (e:Dynamic) throw Error.OutsideBounds;
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#elseif flash
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b.position = pos;
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return encoding == RawNative ? b.readMultiByte(len, "unicode") : b.readUTFBytes(len);
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#elseif cpp
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var result:String = "";
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untyped __global__.__hxcpp_string_of_bytes(b, result, pos, len);
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return result;
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#elseif cs
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switch (encoding) {
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case UTF8 | null:
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return cs.system.text.Encoding.UTF8.GetString(b, pos, len);
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case RawNative:
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return cs.system.text.Encoding.Unicode.GetString(b, pos, len);
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}
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#elseif java
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try {
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switch (encoding) {
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case UTF8 | null:
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return new String(b, pos, len, "UTF-8");
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case RawNative:
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return new String(b, pos, len, "UTF-16LE");
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}
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} catch (e:Dynamic) {
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throw e;
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}
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#elseif python
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return python.Syntax.code("self.b[{0}:{0}+{1}].decode('UTF-8','replace')", pos, len);
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#elseif lua
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if (b.length - pos <= lua.Boot.MAXSTACKSIZE) {
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var end:Int = cast Math.min(b.length, pos + len) - 1;
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return lua.NativeStringTools.char(lua.TableTools.unpack(untyped b, pos, end));
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} else {
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var tbl:lua.Table<Int, String> = lua.Table.create();
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for (idx in pos...pos + len) {
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lua.Table.insert(tbl, lua.NativeStringTools.char(b[idx]));
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}
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return lua.Table.concat(tbl, '');
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}
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#else
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var s = "";
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var b = b;
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var fcc = String.fromCharCode;
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var i = pos;
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var max = pos + len;
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// utf8-decode and utf16-encode
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while (i < max) {
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var c = b[i++];
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if (c < 0x80) {
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if (c == 0)
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break;
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s += fcc(c);
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} else if (c < 0xE0)
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s += fcc(((c & 0x3F) << 6) | (b[i++] & 0x7F));
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else if (c < 0xF0) {
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var c2 = b[i++];
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s += fcc(((c & 0x1F) << 12) | ((c2 & 0x7F) << 6) | (b[i++] & 0x7F));
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} else {
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var c2 = b[i++];
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var c3 = b[i++];
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var u = ((c & 0x0F) << 18) | ((c2 & 0x7F) << 12) | ((c3 & 0x7F) << 6) | (b[i++] & 0x7F);
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// surrogate pair
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s += fcc((u >> 10) + 0xD7C0);
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s += fcc((u & 0x3FF) | 0xDC00);
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}
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}
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return s;
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#end
|
|
}
|
|
|
|
@:deprecated("readString is deprecated, use getString instead")
|
|
@:noCompletion
|
|
public inline function readString(pos:Int, len:Int):String {
|
|
return getString(pos, len);
|
|
}
|
|
|
|
/**
|
|
Returns a `String` representation of the bytes interpreted as UTF-8.
|
|
**/
|
|
public function toString():String {
|
|
#if neko
|
|
return new String(untyped __dollar__ssub(b, 0, length));
|
|
#elseif flash
|
|
b.position = 0;
|
|
return b.toString();
|
|
#elseif cs
|
|
return cs.system.text.Encoding.UTF8.GetString(b, 0, length);
|
|
#elseif java
|
|
try {
|
|
return new String(b, 0, length, "UTF-8");
|
|
} catch (e:Dynamic)
|
|
throw e;
|
|
#else
|
|
return getString(0, length);
|
|
#end
|
|
}
|
|
|
|
/**
|
|
Returns a hexadecimal `String` representation of the bytes of `this`
|
|
instance.
|
|
**/
|
|
public function toHex():String {
|
|
var s = new StringBuf();
|
|
var chars = [];
|
|
var str = "0123456789abcdef";
|
|
for (i in 0...str.length)
|
|
chars.push(str.charCodeAt(i));
|
|
for (i in 0...length) {
|
|
var c = get(i);
|
|
s.addChar(chars[c >> 4]);
|
|
s.addChar(chars[c & 15]);
|
|
}
|
|
return s.toString();
|
|
}
|
|
|
|
/**
|
|
Returns the bytes of `this` instance as `BytesData`.
|
|
**/
|
|
public inline function getData():BytesData {
|
|
return b;
|
|
}
|
|
|
|
/**
|
|
Returns a new `Bytes` instance with the given `length`. The values of the
|
|
bytes are not initialized and may not be zero.
|
|
**/
|
|
public static function alloc(length:Int):Bytes {
|
|
#if neko
|
|
return new Bytes(length, untyped __dollar__smake(length));
|
|
#elseif flash
|
|
var b = new flash.utils.ByteArray();
|
|
b.length = length;
|
|
return new Bytes(length, b);
|
|
#elseif cpp
|
|
var a = new BytesData();
|
|
if (length > 0)
|
|
cpp.NativeArray.setSize(a, length);
|
|
return new Bytes(length, a);
|
|
#elseif cs
|
|
return new Bytes(length, new cs.NativeArray(length));
|
|
#elseif java
|
|
return new Bytes(length, new java.NativeArray(length));
|
|
#elseif python
|
|
return new Bytes(length, new python.Bytearray(length));
|
|
#else
|
|
var a = new Array();
|
|
for (i in 0...length)
|
|
a.push(0);
|
|
return new Bytes(length, a);
|
|
#end
|
|
}
|
|
|
|
/**
|
|
Returns the `Bytes` representation of the given `String`, using the
|
|
specified encoding (UTF-8 by default).
|
|
**/
|
|
@:pure
|
|
public static function ofString(s:String, ?encoding:Encoding):Bytes {
|
|
#if neko
|
|
return new Bytes(s.length, untyped __dollar__ssub(s.__s, 0, s.length));
|
|
#elseif flash
|
|
var b = new flash.utils.ByteArray();
|
|
if (encoding == RawNative)
|
|
b.writeMultiByte(s, "unicode")
|
|
else
|
|
b.writeUTFBytes(s);
|
|
return new Bytes(b.length, b);
|
|
#elseif cpp
|
|
var a = new BytesData();
|
|
untyped __global__.__hxcpp_bytes_of_string(a, s);
|
|
return new Bytes(a.length, a);
|
|
#elseif cs
|
|
var b = switch (encoding) {
|
|
case UTF8 | null:
|
|
cs.system.text.Encoding.UTF8.GetBytes(s);
|
|
case RawNative:
|
|
cs.system.text.Encoding.Unicode.GetBytes(s);
|
|
};
|
|
return new Bytes(b.Length, b);
|
|
#elseif java
|
|
try {
|
|
var b:BytesData = switch (encoding) {
|
|
case UTF8 | null:
|
|
@:privateAccess s.getBytes("UTF-8");
|
|
case RawNative:
|
|
@:privateAccess s.getBytes("UTF-16LE");
|
|
};
|
|
return new Bytes(b.length, b);
|
|
} catch (e:Dynamic) {
|
|
throw e;
|
|
}
|
|
#elseif python
|
|
var b:BytesData = new python.Bytearray(s, "UTF-8");
|
|
return new Bytes(b.length, b);
|
|
#elseif lua
|
|
var bytes = [
|
|
for (i in 0...lua.NativeStringTools.len(s)) {
|
|
lua.NativeStringTools.byte(s, i + 1);
|
|
}
|
|
];
|
|
return new Bytes(bytes.length, bytes);
|
|
#else
|
|
var a = new Array();
|
|
// utf16-decode and utf8-encode
|
|
var i = 0;
|
|
while (i < s.length) {
|
|
var c:Int = StringTools.fastCodeAt(s, i++);
|
|
// surrogate pair
|
|
if (0xD800 <= c && c <= 0xDBFF)
|
|
c = (c - 0xD7C0 << 10) | (StringTools.fastCodeAt(s, i++) & 0x3FF);
|
|
if (c <= 0x7F)
|
|
a.push(c);
|
|
else if (c <= 0x7FF) {
|
|
a.push(0xC0 | (c >> 6));
|
|
a.push(0x80 | (c & 63));
|
|
} else if (c <= 0xFFFF) {
|
|
a.push(0xE0 | (c >> 12));
|
|
a.push(0x80 | ((c >> 6) & 63));
|
|
a.push(0x80 | (c & 63));
|
|
} else {
|
|
a.push(0xF0 | (c >> 18));
|
|
a.push(0x80 | ((c >> 12) & 63));
|
|
a.push(0x80 | ((c >> 6) & 63));
|
|
a.push(0x80 | (c & 63));
|
|
}
|
|
}
|
|
return new Bytes(a.length, a);
|
|
#end
|
|
}
|
|
|
|
/**
|
|
Returns the `Bytes` representation of the given `BytesData`.
|
|
**/
|
|
public static function ofData(b:BytesData) {
|
|
#if flash
|
|
return new Bytes(b.length, b);
|
|
#elseif neko
|
|
return new Bytes(untyped __dollar__ssize(b), b);
|
|
#elseif cs
|
|
return new Bytes(b.Length, b);
|
|
#else
|
|
return new Bytes(b.length, b);
|
|
#end
|
|
}
|
|
|
|
/**
|
|
Converts the given hexadecimal `String` to `Bytes`. `s` must be a string of
|
|
even length consisting only of hexadecimal digits. For example:
|
|
`"0FDA14058916052309"`.
|
|
**/
|
|
public static function ofHex(s:String):Bytes {
|
|
var len:Int = s.length;
|
|
if ((len & 1) != 0)
|
|
throw "Not a hex string (odd number of digits)";
|
|
var ret:Bytes = Bytes.alloc(len >> 1);
|
|
for (i in 0...ret.length) {
|
|
var high = StringTools.fastCodeAt(s, i * 2);
|
|
var low = StringTools.fastCodeAt(s, i * 2 + 1);
|
|
high = (high & 0xF) + ((high & 0x40) >> 6) * 9;
|
|
low = (low & 0xF) + ((low & 0x40) >> 6) * 9;
|
|
ret.set(i, ((high << 4) | low) & 0xFF);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
Reads the `pos`-th byte of the given `b` bytes, in the most efficient way
|
|
possible. Behavior when reading outside of the available data is
|
|
unspecified.
|
|
**/
|
|
public inline static function fastGet(b:BytesData, pos:Int):Int {
|
|
#if neko
|
|
return untyped __dollar__sget(b, pos);
|
|
#elseif flash
|
|
return b[pos];
|
|
#elseif cpp
|
|
return untyped b.unsafeGet(pos);
|
|
#elseif java
|
|
return untyped b[pos] & 0xFF;
|
|
#else
|
|
return b[pos];
|
|
#end
|
|
}
|
|
}
|