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UTF16LE sans codepage (fixes #2898 h/t @brismuth)

This commit is contained in:
SheetJS 2023-03-15 04:17:09 -04:00
parent 0577bb7a45
commit 16dd8a6eae
5 changed files with 29 additions and 4 deletions
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5
bits/02_codepage.js
View File

@ -41,6 +41,11 @@ function utf16leread(data/*:string*/)/*:string*/ {
for(var i = 0; i < (data.length>>1); ++i) o[i] = String.fromCharCode(data.charCodeAt(2*i) + (data.charCodeAt(2*i+1)<<8));
return o.join("");
}
function utf16lereadu(data/*:Uint8Array*/)/*:string*/ {
var o/*:Array<string>*/ = [];
for(var i = 0; i < (data.length>>1); ++i) o[i] = String.fromCharCode(data[2*i] + (data[2*i+1]<<8));
return o.join("");
}
function utf16beread(data/*:string*/)/*:string*/ {
var o/*:Array<string>*/ = [];
for(var i = 0; i < (data.length>>1); ++i) o[i] = String.fromCharCode(data.charCodeAt(2*i+1) + (data.charCodeAt(2*i)<<8));

2
bits/18_cfb.js
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@ -73,7 +73,7 @@ function slice_by_16_tables(T) {
for(c = 256 + n; c < 4096; c += 256) v = table[c] = (v >>> 8) ^ T[v & 0xFF];
}
var out = [];
for(n = 1; n != 16; ++n) out[n - 1] = typeof Int32Array !== 'undefined' ? table.subarray(n * 256, n * 256 + 256) : table.slice(n * 256, n * 256 + 256);
for(n = 1; n != 16; ++n) out[n - 1] = typeof Int32Array !== 'undefined' && typeof table.subarray == "function" ? table.subarray(n * 256, n * 256 + 256) : table.slice(n * 256, n * 256 + 256);
return out;
}
var TT = slice_by_16_tables(T0);

8
bits/87_read.js
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@ -50,7 +50,13 @@ function read_plaintext_raw(data/*:RawData*/, o/*:ParseOpts*/)/*:Workbook*/ {
function read_utf16(data/*:RawData*/, o/*:ParseOpts*/)/*:Workbook*/ {
var d = data;
if(o.type == 'base64') d = Base64_decode(d);
d = typeof $cptable !== "undefined" ? $cptable.utils.decode(1200, d.slice(2), 'str') : utf16leread(d.slice(2));
if(typeof ArrayBuffer !== "undefined" && data instanceof ArrayBuffer) d = new Uint8Array(data);
d = typeof $cptable !== "undefined" ? $cptable.utils.decode(1200, d.slice(2), 'str') : (
(has_buf && Buffer.isBuffer(data)) ? data.slice(2).toString("utf16le") :
(typeof Uint8Array !== "undefined" && d instanceof Uint8Array) ? (
typeof TextDecoder !== "undefined" ? new TextDecoder("utf-16le").decode(d.slice(2)) : utf16lereadu(d.slice(2))
) : utf16leread(d.slice(2))
);
o.type = "binary";
return read_plaintext(d, o);
}

3
types/index.d.ts vendored
View File

@ -693,6 +693,9 @@ export interface CellObject {
/** Range of enclosing array if formula is array formula (if applicable) */
F?: string;
/** If true, cell is a dynamic array formula (for supported file formats) */
D?: boolean;
/** Rich text encoding (if applicable) */
r?: any;

15
xlsx.mjs generated
View File

@ -47,6 +47,11 @@ function utf16leread(data/*:string*/)/*:string*/ {
for(var i = 0; i < (data.length>>1); ++i) o[i] = String.fromCharCode(data.charCodeAt(2*i) + (data.charCodeAt(2*i+1)<<8));
return o.join("");
}
function utf16lereadu(data/*:Uint8Array*/)/*:string*/ {
var o/*:Array<string>*/ = [];
for(var i = 0; i < (data.length>>1); ++i) o[i] = String.fromCharCode(data[2*i] + (data[2*i+1]<<8));
return o.join("");
}
function utf16beread(data/*:string*/)/*:string*/ {
var o/*:Array<string>*/ = [];
for(var i = 0; i < (data.length>>1); ++i) o[i] = String.fromCharCode(data.charCodeAt(2*i+1) + (data.charCodeAt(2*i)<<8));
@ -1435,7 +1440,7 @@ function slice_by_16_tables(T) {
for(c = 256 + n; c < 4096; c += 256) v = table[c] = (v >>> 8) ^ T[v & 0xFF];
}
var out = [];
for(n = 1; n != 16; ++n) out[n - 1] = typeof Int32Array !== 'undefined' ? table.subarray(n * 256, n * 256 + 256) : table.slice(n * 256, n * 256 + 256);
for(n = 1; n != 16; ++n) out[n - 1] = typeof Int32Array !== 'undefined' && typeof table.subarray == "function" ? table.subarray(n * 256, n * 256 + 256) : table.slice(n * 256, n * 256 + 256);
return out;
}
var TT = slice_by_16_tables(T0);
@ -25719,7 +25724,13 @@ function read_plaintext_raw(data/*:RawData*/, o/*:ParseOpts*/)/*:Workbook*/ {
function read_utf16(data/*:RawData*/, o/*:ParseOpts*/)/*:Workbook*/ {
var d = data;
if(o.type == 'base64') d = Base64_decode(d);
d = typeof $cptable !== "undefined" ? $cptable.utils.decode(1200, d.slice(2), 'str') : utf16leread(d.slice(2));
if(typeof ArrayBuffer !== "undefined" && data instanceof ArrayBuffer) d = new Uint8Array(data);
d = typeof $cptable !== "undefined" ? $cptable.utils.decode(1200, d.slice(2), 'str') : (
(has_buf && Buffer.isBuffer(data)) ? data.slice(2).toString("utf16le") :
(typeof Uint8Array !== "undefined" && d instanceof Uint8Array) ? (
typeof TextDecoder !== "undefined" ? new TextDecoder("utf-16le").decode(d.slice(2)) : utf16lereadu(d.slice(2))
) : utf16leread(d.slice(2))
);
o.type = "binary";
return read_plaintext(d, o);
}