82 lines
3.3 KiB
JavaScript
82 lines
3.3 KiB
JavaScript
var current_codepage = 1200, current_ansi = 1252;
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/*:: declare var cptable:any; */
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/*global cptable:true, window */
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var $cptable;
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var VALID_ANSI = [ 874, 932, 936, 949, 950, 1250, 1251, 1252, 1253, 1254, 1255, 1256, 1257, 1258, 10000 ];
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/* ECMA-376 Part I 18.4.1 charset to codepage mapping */
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var CS2CP = ({
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/*::[*/0/*::]*/: 1252, /* ANSI */
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/*::[*/1/*::]*/: 65001, /* DEFAULT */
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/*::[*/2/*::]*/: 65001, /* SYMBOL */
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/*::[*/77/*::]*/: 10000, /* MAC */
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/*::[*/128/*::]*/: 932, /* SHIFTJIS */
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/*::[*/129/*::]*/: 949, /* HANGUL */
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/*::[*/130/*::]*/: 1361, /* JOHAB */
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/*::[*/134/*::]*/: 936, /* GB2312 */
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/*::[*/136/*::]*/: 950, /* CHINESEBIG5 */
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/*::[*/161/*::]*/: 1253, /* GREEK */
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/*::[*/162/*::]*/: 1254, /* TURKISH */
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/*::[*/163/*::]*/: 1258, /* VIETNAMESE */
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/*::[*/177/*::]*/: 1255, /* HEBREW */
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/*::[*/178/*::]*/: 1256, /* ARABIC */
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/*::[*/186/*::]*/: 1257, /* BALTIC */
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/*::[*/204/*::]*/: 1251, /* RUSSIAN */
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/*::[*/222/*::]*/: 874, /* THAI */
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/*::[*/238/*::]*/: 1250, /* EASTEUROPE */
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/*::[*/255/*::]*/: 1252, /* OEM */
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/*::[*/69/*::]*/: 6969 /* MISC */
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}/*:any*/);
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var set_ansi = function(cp/*:number*/) { if(VALID_ANSI.indexOf(cp) == -1) return; current_ansi = CS2CP[0] = cp; };
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function reset_ansi() { set_ansi(1252); }
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var set_cp = function(cp/*:number*/) { current_codepage = cp; set_ansi(cp); };
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function reset_cp() { set_cp(1200); reset_ansi(); }
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function char_codes(data/*:string*/)/*:Array<number>*/ { var o/*:Array<number>*/ = []; for(var i = 0, len = data.length; i < len; ++i) o[i] = data.charCodeAt(i); return o; }
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function utf16leread(data/*:string*/)/*:string*/ {
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var o/*:Array<string>*/ = [];
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for(var i = 0; i < (data.length>>1); ++i) o[i] = String.fromCharCode(data.charCodeAt(2*i) + (data.charCodeAt(2*i+1)<<8));
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return o.join("");
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}
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function utf16lereadu(data/*:Uint8Array*/)/*:string*/ {
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var o/*:Array<string>*/ = [];
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for(var i = 0; i < (data.length>>1); ++i) o[i] = String.fromCharCode(data[2*i] + (data[2*i+1]<<8));
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return o.join("");
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}
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function utf16beread(data/*:string*/)/*:string*/ {
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var o/*:Array<string>*/ = [];
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for(var i = 0; i < (data.length>>1); ++i) o[i] = String.fromCharCode(data.charCodeAt(2*i+1) + (data.charCodeAt(2*i)<<8));
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return o.join("");
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}
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var debom = function(data/*:string*/)/*:string*/ {
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var c1 = data.charCodeAt(0), c2 = data.charCodeAt(1);
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if(c1 == 0xFF && c2 == 0xFE) return utf16leread(data.slice(2));
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if(c1 == 0xFE && c2 == 0xFF) return utf16beread(data.slice(2));
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if(c1 == 0xFEFF) return data.slice(1);
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return data;
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};
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var _getchar = function _gc1(x/*:number*/)/*:string*/ { return String.fromCharCode(x); };
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var _getansi = function _ga1(x/*:number*/)/*:string*/ { return String.fromCharCode(x); };
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function set_cptable(cptable) {
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$cptable = cptable;
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set_cp = function(cp/*:number*/) { current_codepage = cp; set_ansi(cp); };
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debom = function(data/*:string*/) {
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if(data.charCodeAt(0) === 0xFF && data.charCodeAt(1) === 0xFE) { return $cptable.utils.decode(1200, char_codes(data.slice(2))); }
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return data;
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};
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_getchar = function _gc2(x/*:number*/)/*:string*/ {
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if(current_codepage === 1200) return String.fromCharCode(x);
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return $cptable.utils.decode(current_codepage, [x&255,x>>8])[0];
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};
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_getansi = function _ga2(x/*:number*/)/*:string*/ {
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return $cptable.utils.decode(current_ansi, [x])[0];
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};
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cpdoit();
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}
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