File: String.hx

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/*
 * Copyright (C)2005-2017 Haxe Foundation
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 */

import lua.Lua;
import lua.Table;
import lua.Boot;
import lua.NativeStringTools;

@:coreApi
class String {
	static var __oldindex : Table<Dynamic,Dynamic>;
	public var length(default,null) : Int;


	public function new(string:String) untyped {}

	@:keep
	static function __index(s:Dynamic, k:Dynamic) : Dynamic {
		if (k == "length") return NativeStringTools.len(s);
		else if (Reflect.hasField(untyped String.prototype, k)) return untyped String.prototype[k];
		else if (__oldindex != null) return  __oldindex[k];
		else return null;
	}

	public function toUpperCase() : String return NativeStringTools.upper(this);
	public function toLowerCase() : String return NativeStringTools.lower(this);
	public function indexOf( str : String, ?startIndex : Int ) : Int {
		if (startIndex == null) startIndex = 1;
		else startIndex += 1;
		var r = NativeStringTools.find(this, str, startIndex, true).begin;
		if (r != null && r > 0) return r-1;
		else return -1;
	}

	public function lastIndexOf( str : String, ?startIndex : Int ) : Int {
		var i = 0;
		var ret = -1;
		if( startIndex == null ) startIndex = length;
		while( true ) {
			var p = indexOf(str, ret+1);
			if( p == -1 || p > startIndex ) return ret;
			ret = p;
		}
	}

	public function split( delimiter : String ) : Array<String> {
		var idx = 1;
		var ret = [];
		var delim_offset = delimiter.length > 0 ? delimiter.length : 1;
		while (idx != null){
			var newidx = 0;
			if (delimiter.length > 0){
				newidx = NativeStringTools.find(this, delimiter, idx, true).begin;
			} else if (idx >= this.length){
				newidx = null;
			} else {
				newidx = idx + 1;
			}

			if (newidx != null){
				var match = NativeStringTools.sub(this, idx, newidx-1).match;
				ret.push(match);
				idx = newidx + delimiter.length;
			} else {
				ret.push(NativeStringTools.sub(this,idx,NativeStringTools.len(this)).match);
				idx = null;
			}
		}
		return ret;
	}

	public function toString() : String {
		return this;
	}
	public function substring( startIndex : Int, ?endIndex : Int ) : String {
		if (endIndex == null) endIndex = this.length;
		if (endIndex < 0) endIndex = 0;
		if (startIndex < 0) startIndex = 0;
		if (endIndex < startIndex) {
			// swap the index positions
			return NativeStringTools.sub(this, endIndex+1, startIndex).match;
		} else {
			return NativeStringTools.sub(this, startIndex+1, endIndex).match;
		}
	}

	function get_length() : Int {
		return NativeStringTools.len(this);
	}
	public function charAt( index : Int) : String {
		return NativeStringTools.sub(this,index+1, index+1).match;
	}
	public function charCodeAt( index : Int) : Null<Int> {
		return NativeStringTools.byte(this,index+1);
	}

	public function substr( pos : Int, ?len : Int ) : String {
		if (len == null || len > pos + this.length) len = this.length;
		else if (len < 0) len = length + len;
		if (pos < 0) pos = length + pos;
		if (pos < 0) pos = 0;
		return NativeStringTools.sub(this, pos + 1, pos+len).match;
	}

	public inline static function fromCharCode( code : Int ) : String {
		return NativeStringTools.char(code);
	}

}