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/*
* Copyright (C)2005-2012 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.
*/
@:coreApi @:final class EReg {
var r : Dynamic;
var last : String;
var global : Bool;
var pattern : String;
var options : String;
var re : String;
var matches : ArrayAccess<Dynamic>;
public function new( r : String, opt : String ) : Void {
this.pattern = r;
var a = opt.split("g");
global = a.length > 1;
if( global )
opt = a.join("");
this.options = opt;
this.re = untyped __php__("'\"' . str_replace('\"','\\\\\"',$r) . '\"' . $opt");
}
public function match( s : String ) : Bool {
var p : Int = untyped __call__("preg_match", re, s, matches, __php__("PREG_OFFSET_CAPTURE"));
if(p > 0)
last = s;
else
last = null;
return p > 0;
}
public function matched( n : Int ) : String {
if (matches == null || n < 0 ) throw "EReg::matched";
// we can't differenciate between optional groups at the end of a match
// that have not been matched and invalid groups
if( n >= untyped __call__("count", matches)) return null;
if(untyped __php__("$this->matches[$n][1] < 0")) return null;
return untyped __php__("$this->matches[$n][0]");
}
public function matchedLeft() : String {
if( untyped __call__("count", matches) == 0 ) throw "No string matched";
return last.substr(0, untyped __php__("$this->matches[0][1]"));
}
public function matchedRight() : String {
if( untyped __call__("count", matches) == 0 ) throw "No string matched";
var x : Int = untyped __php__("$this->matches[0][1]") + __call__("strlen",__php__("$this->matches[0][0]"));
return last.substr(x);
}
public function matchedPos() : { pos : Int, len : Int } {
return untyped { pos : __php__("$this->matches[0][1]"), len : __call__("strlen",__php__("$this->matches[0][0]")) };
}
public function matchSub( s : String, pos : Int, len : Int = -1):Bool {
var p : Int = untyped __call__("preg_match", re, len < 0 ? s : s.substr(0,pos + len), matches, __php__("PREG_OFFSET_CAPTURE"), pos);
if(p > 0) {
last = s;
}
else
last = null;
return p > 0;
}
public function split( s : String ) : Array<String> {
return untyped __php__("new _hx_array(preg_split($this->re, $s, $this->{\"global\"} ? -1 : 2))");
}
public function replace( s : String, by : String ) : String {
by = untyped __call__("str_replace", "\\$", "\\\\$", by);
by = untyped __call__("str_replace", "$$", "\\$", by);
untyped __php__("if(!preg_match('/\\\\([^?].+?\\\\)/', $this->re)) $by = preg_replace('/\\$(\\d+)/', '\\\\\\$\\1', $by)");
return untyped __call__("preg_replace", re, by, s, global ? -1 : 1);
}
public function map( s : String, f : EReg -> String ) : String {
var offset = 0;
var buf = new StringBuf();
do {
if (offset >= s.length)
break;
else if (!matchSub(s, offset)) {
buf.add(s.substr(offset));
break;
}
var p = matchedPos();
buf.add(s.substr(offset, p.pos - offset));
buf.add(f(this));
if (p.len == 0) {
buf.add(s.substr(p.pos, 1));
offset = p.pos + 1;
}
else
offset = p.pos + p.len;
} while (global);
if (!global && offset > 0 && offset < s.length)
buf.add(s.substr(offset));
return buf.toString();
}
}
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