sheetjs-clone/packages/dta/dist/dta.js

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var __defProp = Object.defineProperty;
var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
var __getOwnPropNames = Object.getOwnPropertyNames;
var __hasOwnProp = Object.prototype.hasOwnProperty;
var __markAsModule = (target) => __defProp(target, "__esModule", { value: true });
var __export = (target, all) => {
for (var name in all)
__defProp(target, name, { get: all[name], enumerable: true });
};
var __reExport = (target, module2, copyDefault, desc) => {
if (module2 && typeof module2 === "object" || typeof module2 === "function") {
for (let key of __getOwnPropNames(module2))
if (!__hasOwnProp.call(target, key) && (copyDefault || key !== "default"))
__defProp(target, key, { get: () => module2[key], enumerable: !(desc = __getOwnPropDesc(module2, key)) || desc.enumerable });
}
return target;
};
var __toCommonJS = /* @__PURE__ */ ((cache) => {
return (module2, temp) => {
return cache && cache.get(module2) || (temp = __reExport(__markAsModule({}), module2, 1), cache && cache.set(module2, temp), temp);
};
})(typeof WeakMap !== "undefined" ? /* @__PURE__ */ new WeakMap() : 0);
// dta.ts
var dta_exports = {};
__export(dta_exports, {
parse: () => parse,
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set_utils: () => set_utils,
version: () => version
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});
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var version = "0.0.1";
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var _utils;
function set_utils(utils) {
_utils = utils;
}
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function u8_to_str(u8) {
return new TextDecoder().decode(u8);
}
function u8_to_latin1(u8) {
return new TextDecoder("latin1").decode(u8);
}
function format_number_dta(value, format, t) {
if (value < 0) {
const res = format_number_dta(-value, format, t);
res.w = "-" + res.w;
return res;
}
const o = { t: "n", v: value };
switch (t) {
case 251:
case 98:
case 65530:
format = "%8.0g";
break;
case 252:
case 105:
case 65529:
format = "%8.0g";
break;
case 253:
case 108:
case 65528:
format = "%12.0g";
break;
case 254:
case 102:
case 65527:
format = "%9.0g";
break;
case 255:
case 100:
case 65526:
format = "%10.0g";
break;
default:
throw t;
}
try {
let w = +(format.match(/%(\d+)/) || [])[1] || 8;
let k = 0;
if (value < 1)
++k;
if (value < 0.1)
++k;
if (value < 0.01)
++k;
if (value < 1e-3)
++k;
const e = value.toExponential();
const exp = e.indexOf("e") == -1 ? 0 : +e.slice(e.indexOf("e") + 1);
let h = w - 2 - exp;
if (h < 0)
h = 0;
var m = format.match(/%\d+\.(\d+)/);
if (m && +m[1])
h = +m[1];
o.w = (Math.round(value * 10 ** h) / 10 ** h).toFixed(h).replace(/^([-]?)0\./, "$1.");
o.w = o.w.slice(0, w + k);
if (o.w.indexOf(".") > -1)
o.w = o.w.replace(/0+$/, "");
o.w = o.w.replace(/\.$/, "");
if (o.w == "")
o.w = "0";
} catch (e) {
}
return o;
}
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function u8_to_dataview(array) {
return new DataView(array.buffer, array.byteOffset, array.byteLength);
}
function valid_inc(p, n) {
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if (u8_to_str(p.raw.slice(p.ptr, p.ptr + n.length)) != n)
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return false;
p.ptr += n.length;
return true;
}
function read_f64(p, LE) {
p.ptr += 8;
const d = p.dv.getFloat64(p.ptr - 8, LE);
return d > 8988e304 ? null : d;
}
function read_f32(p, LE) {
p.ptr += 4;
const d = p.dv.getFloat32(p.ptr - 4, LE);
return d > 1701e35 ? null : d;
}
function read_u32(p, LE) {
p.ptr += 4;
return p.dv.getUint32(p.ptr - 4, LE);
}
function read_i32(p, LE) {
p.ptr += 4;
const u = p.dv.getInt32(p.ptr - 4, LE);
return u > 2147483620 ? null : u;
}
function read_u16(p, LE) {
p.ptr += 2;
return p.dv.getUint16(p.ptr - 2, LE);
}
function read_i16(p, LE) {
p.ptr += 2;
const u = p.dv.getInt16(p.ptr - 2, LE);
return u > 32740 ? null : u;
}
function read_u8(p) {
return p.raw[p.ptr++];
}
function read_i8(p) {
let u = p.raw[p.ptr++];
u = u < 128 ? u : u - 256;
return u > 100 ? null : u;
}
var SUPPORTED_VERSIONS_TAGGED = [
"117",
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"118",
"119",
"120",
"121"
];
var SUPPORTED_VERSIONS_LEGACY = [
102,
103,
104,
105,
108,
110,
111,
112,
113,
114,
115
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];
function parse_tagged(raw) {
const err = "Not a DTA file";
const d = {
ptr: 0,
raw,
dv: u8_to_dataview(raw)
};
let vers = 118;
let LE = true;
let nvar = 0, nobs = 0, nobs_lo = 0, nobs_hi = 0;
let label = "", timestamp = "";
const var_types = [];
const var_names = [];
const formats = [];
if (!valid_inc(d, "<stata_dta>"))
throw err;
{
if (!valid_inc(d, "<header>"))
throw err;
{
if (!valid_inc(d, "<release>"))
throw err;
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const res = u8_to_latin1(d.raw.slice(d.ptr, d.ptr + 3));
d.ptr += 3;
if (!valid_inc(d, "</release>"))
throw err;
if (SUPPORTED_VERSIONS_TAGGED.indexOf(res) == -1)
throw `Unsupported DTA ${res} file`;
vers = +res;
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}
{
if (!valid_inc(d, "<byteorder>"))
throw err;
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const res = u8_to_latin1(d.raw.slice(d.ptr, d.ptr + 3));
d.ptr += 3;
if (!valid_inc(d, "</byteorder>"))
throw err;
switch (res) {
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case "MSF":
LE = false;
break;
case "LSF":
LE = true;
break;
default:
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throw `Unsupported byteorder ${res}`;
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}
}
{
if (!valid_inc(d, "<K>"))
throw err;
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nvar = vers === 119 || vers >= 121 ? read_u32(d, LE) : read_u16(d, LE);
if (!valid_inc(d, "</K>"))
throw err;
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}
{
if (!valid_inc(d, "<N>"))
throw err;
if (vers == 117)
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nobs = nobs_lo = read_u32(d, LE);
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else {
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const lo = read_u32(d, LE), hi = read_u32(d, LE);
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nobs = LE ? (nobs_lo = lo) + (nobs_hi = hi) * Math.pow(2, 32) : (nobs_lo = hi) + (nobs_hi = lo) * Math.pow(2, 32);
}
if (nobs > 1e6)
console.error(`More than 1 million observations -- extra rows will be dropped`);
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if (!valid_inc(d, "</N>"))
throw err;
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}
{
if (!valid_inc(d, "<label>"))
throw err;
const w = vers >= 118 ? 2 : 1;
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const strlen = w == 1 ? read_u8(d) : read_u16(d, LE);
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if (strlen > 0)
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label = u8_to_str(d.raw.slice(d.ptr, d.ptr + w));
d.ptr += strlen;
if (!valid_inc(d, "</label>"))
throw err;
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}
{
if (!valid_inc(d, "<timestamp>"))
throw err;
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const strlen = read_u8(d);
timestamp = u8_to_latin1(d.raw.slice(d.ptr, d.ptr + strlen));
d.ptr += strlen;
if (!valid_inc(d, "</timestamp>"))
throw err;
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}
if (!valid_inc(d, "</header>"))
throw err;
}
{
if (!valid_inc(d, "<map>"))
throw err;
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d.ptr += 8 * 14;
if (!valid_inc(d, "</map>"))
throw err;
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}
let stride = 0;
{
if (!valid_inc(d, "<variable_types>"))
throw err;
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for (var i = 0; i < nvar; ++i) {
const type = read_u16(d, LE);
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var_types.push(type);
if (type >= 1 && type <= 2045)
stride += type;
else
switch (type) {
case 32768:
stride += 8;
break;
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case 65525:
stride += 0;
break;
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case 65526:
stride += 8;
break;
case 65527:
stride += 4;
break;
case 65528:
stride += 4;
break;
case 65529:
stride += 2;
break;
case 65530:
stride += 1;
break;
default:
throw `Unsupported field type ${type}`;
}
}
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if (!valid_inc(d, "</variable_types>"))
throw err;
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}
{
if (!valid_inc(d, "<varnames>"))
throw err;
const w = vers >= 118 ? 129 : 33;
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for (let i2 = 0; i2 < nvar; ++i2) {
const name = u8_to_str(d.raw.slice(d.ptr, d.ptr + w));
d.ptr += w;
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var_names.push(name.replace(/\x00[\s\S]*/, ""));
}
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if (!valid_inc(d, "</varnames>"))
throw err;
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}
{
if (!valid_inc(d, "<sortlist>"))
throw err;
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d.ptr += (2 * nvar + 2) * (vers == 119 || vers == 121 ? 2 : 1);
if (!valid_inc(d, "</sortlist>"))
throw err;
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}
{
if (!valid_inc(d, "<formats>"))
throw err;
const w = vers >= 118 ? 57 : 49;
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for (let i2 = 0; i2 < nvar; ++i2) {
const name = u8_to_str(d.raw.slice(d.ptr, d.ptr + w));
d.ptr += w;
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formats.push(name.replace(/\x00[\s\S]*/, ""));
}
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if (!valid_inc(d, "</formats>"))
throw err;
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}
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const value_label_names = [];
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{
if (!valid_inc(d, "<value_label_names>"))
throw err;
const w = vers >= 118 ? 129 : 33;
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for (let i2 = 0; i2 < nvar; ++i2, d.ptr += w)
value_label_names[i2] = u8_to_latin1(d.raw.slice(d.ptr, d.ptr + w)).replace(/\x00.*$/, "");
if (!valid_inc(d, "</value_label_names>"))
throw err;
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}
{
if (!valid_inc(d, "<variable_labels>"))
throw err;
const w = vers >= 118 ? 321 : 81;
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d.ptr += w * nvar;
if (!valid_inc(d, "</variable_labels>"))
throw err;
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}
{
if (!valid_inc(d, "<characteristics>"))
throw err;
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while (valid_inc(d, "<ch>")) {
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const len = read_u32(d, LE);
d.ptr += len;
if (!valid_inc(d, "</ch>"))
throw err;
}
if (!valid_inc(d, "</characteristics>"))
throw err;
}
const ws = _utils.aoa_to_sheet([var_names], { dense: true });
var ptrs = [];
{
if (!valid_inc(d, "<data>"))
throw err;
for (let R = 0; R < nobs; ++R) {
const row = [];
for (let C = 0; C < nvar; ++C) {
let t = var_types[C];
if (t >= 1 && t <= 2045) {
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let s = u8_to_str(d.raw.slice(d.ptr, d.ptr + t));
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s = s.replace(/\x00[\s\S]*/, "");
row[C] = s;
d.ptr += t;
} else
switch (t) {
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case 65525:
d.ptr += 0;
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break;
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case 65530:
row[C] = read_i8(d);
break;
case 65529:
row[C] = read_i16(d, LE);
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break;
case 65528:
row[C] = read_i32(d, LE);
break;
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case 65527:
row[C] = read_f32(d, LE);
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break;
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case 65526:
row[C] = read_f64(d, LE);
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break;
case 32768:
{
row[C] = "##SheetJStrL##";
ptrs.push([R + 1, C, d.raw.slice(d.ptr, d.ptr + 8)]);
d.ptr += 8;
}
break;
default:
throw `Unsupported field type ${t} for ${var_names[C]}`;
}
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if (typeof row[C] == "number" && formats[C])
row[C] = format_number_dta(row[C], formats[C], t);
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}
_utils.sheet_add_aoa(ws, [row], { origin: -1, sheetStubs: true });
}
if (!valid_inc(d, "</data>"))
throw err;
}
{
if (!valid_inc(d, "<strls>"))
throw err;
const strl_tbl = [];
while (d.raw[d.ptr] == 71) {
if (!valid_inc(d, "GSO"))
throw err;
const v = read_u32(d, LE);
let o = 0;
if (vers == 117)
o = read_u32(d, LE);
else {
const lo = read_u32(d, LE), hi = read_u32(d, LE);
o = LE ? lo + hi * Math.pow(2, 32) : hi + lo * Math.pow(2, 32);
if (o > 1e6)
console.error(`More than 1 million observations -- data will be dropped`);
}
const t = read_u8(d);
const len = read_u32(d, LE);
if (!strl_tbl[o])
strl_tbl[o] = [];
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let str = "";
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if (t == 129) {
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str = new TextDecoder(vers >= 118 ? "utf8" : "latin1").decode(d.raw.slice(d.ptr, d.ptr + len));
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d.ptr += len;
} else {
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str = new TextDecoder(vers >= 118 ? "utf8" : "latin1").decode(d.raw.slice(d.ptr, d.ptr + len)).replace(/\x00$/, "");
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d.ptr += len;
}
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strl_tbl[o][v] = str;
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}
if (!valid_inc(d, "</strls>"))
throw err;
ptrs.forEach(([R, C, buf]) => {
const dv = u8_to_dataview(buf);
let v = 0, o = 0;
switch (vers) {
case 117:
{
v = dv.getUint32(0, LE);
o = dv.getUint32(4, LE);
}
break;
case 118:
case 120:
{
v = dv.getUint16(0, LE);
const o1 = dv.getUint16(2, LE), o2 = dv.getUint32(4, LE);
o = LE ? o1 + o2 * 65536 : o2 + o1 * 2 ** 32;
}
break;
case 119:
case 121: {
const v1 = dv.getUint16(0, LE), v2 = buf[2];
v = LE ? v1 + (v2 << 16) : v2 + (v1 << 8);
const o1 = buf[3], o2 = dv.getUint32(4, LE);
o = LE ? o1 + o2 * 256 : o2 + o1 * 2 ** 32;
}
}
ws["!data"][R][C].v = strl_tbl[o][v];
});
}
{
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const w = vers >= 118 ? 129 : 33;
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if (!valid_inc(d, "<value_labels>"))
throw err;
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while (valid_inc(d, "<lbl>")) {
let len = read_u32(d, LE);
const labname = u8_to_latin1(d.raw.slice(d.ptr, d.ptr + w)).replace(/\x00.*$/, "");
d.ptr += w;
d.ptr += 3;
const labels = [];
{
const n = read_u32(d, LE);
const txtlen = read_u32(d, LE);
const off = [], val = [];
for (let i2 = 0; i2 < n; ++i2)
off.push(read_u32(d, LE));
for (let i2 = 0; i2 < n; ++i2)
val.push(read_u32(d, LE));
const str = u8_to_str(d.raw.slice(d.ptr, d.ptr + txtlen));
d.ptr += txtlen;
for (let i2 = 0; i2 < n; ++i2)
labels[val[i2]] = str.slice(off[i2], str.indexOf("\0", off[i2]));
}
const C = value_label_names.indexOf(labname);
if (C == -1)
throw new Error(`unexpected value label |${labname}|`);
for (let R = 1; R < ws["!data"].length; ++R) {
const cell = ws["!data"][R][C];
cell.t = "s";
cell.v = cell.w = labels[cell.v || 0];
}
if (!valid_inc(d, "</lbl>"))
throw err;
}
if (!valid_inc(d, "</value_labels>"))
throw err;
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}
if (!valid_inc(d, "</stata_dta>"))
throw err;
const wb = _utils.book_new();
_utils.book_append_sheet(wb, ws, "Sheet1");
return wb;
}
function parse_legacy(raw) {
let vers = raw[0];
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if (SUPPORTED_VERSIONS_LEGACY.indexOf(vers) == -1)
throw new Error("Not a DTA file");
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const d = {
ptr: 1,
raw,
dv: u8_to_dataview(raw)
};
let LE = true;
let nvar = 0, nobs = 0;
let label = "", timestamp = "";
const var_types = [];
const var_names = [];
const formats = [];
{
const byteorder = read_u8(d);
switch (byteorder) {
case 1:
LE = false;
break;
case 2:
LE = true;
break;
default:
throw `DTA ${vers} Unexpected byteorder ${byteorder}`;
}
let byte = read_u8(d);
if (byte != 1)
throw `DTA ${vers} Unexpected filetype ${byte}`;
d.ptr++;
nvar = read_u16(d, LE);
nobs = read_u32(d, LE);
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d.ptr += vers >= 108 ? 81 : vers >= 103 ? 32 : 30;
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if (vers >= 105)
d.ptr += 18;
}
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const value_label_names = [];
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{
let C = 0;
for (C = 0; C < nvar; ++C)
var_types.push(read_u8(d));
const w = vers >= 110 ? 33 : 9;
for (C = 0; C < nvar; ++C) {
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var_names.push(u8_to_str(d.raw.slice(d.ptr, d.ptr + w)).replace(/\x00[\s\S]*$/, ""));
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d.ptr += w;
}
d.ptr += 2 * (nvar + 1);
const fw = vers >= 114 ? 49 : vers >= 105 ? 12 : 7;
for (C = 0; C < nvar; ++C) {
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formats.push(u8_to_str(d.raw.slice(d.ptr, d.ptr + fw)).replace(/\x00[\s\S]*$/, ""));
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d.ptr += fw;
}
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const lw = vers >= 110 ? 33 : 9;
for (let i = 0; i < nvar; ++i, d.ptr += lw)
value_label_names[i] = u8_to_latin1(d.raw.slice(d.ptr, d.ptr + lw)).replace(/\x00.*$/, "");
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}
d.ptr += (vers >= 106 ? 81 : 32) * nvar;
if (vers >= 105)
while (d.ptr < d.raw.length) {
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const dt = read_u8(d), len = (vers >= 110 ? read_u32 : read_u16)(d, LE);
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if (dt == 0 && len == 0)
break;
d.ptr += len;
}
const ws = _utils.aoa_to_sheet([var_names], { dense: true });
for (let R = 0; R < nobs; ++R) {
const row = [];
for (let C = 0; C < nvar; ++C) {
let t = var_types[C];
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if ((vers == 111 || vers >= 113) && t >= 1 && t <= 244) {
let s = u8_to_str(d.raw.slice(d.ptr, d.ptr + t));
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s = s.replace(/\x00[\s\S]*/, "");
row[C] = s;
d.ptr += t;
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} else if ((vers == 112 || vers <= 110) && t >= 128) {
let s = u8_to_str(d.raw.slice(d.ptr, d.ptr + t - 127));
s = s.replace(/\x00[\s\S]*/, "");
row[C] = s;
d.ptr += t - 127;
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} else
switch (t) {
case 251:
case 98:
row[C] = read_i8(d);
break;
case 252:
case 105:
row[C] = read_i16(d, LE);
break;
case 253:
case 108:
row[C] = read_i32(d, LE);
break;
case 254:
case 102:
row[C] = read_f32(d, LE);
break;
case 255:
case 100:
row[C] = read_f64(d, LE);
break;
default:
throw `Unsupported field type ${t} for ${var_names[C]}`;
}
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if (typeof row[C] == "number" && formats[C])
row[C] = format_number_dta(row[C], formats[C], t);
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}
_utils.sheet_add_aoa(ws, [row], { origin: -1, sheetStubs: true });
}
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if (vers >= 115)
while (d.ptr < d.raw.length) {
const w = 33;
let len = read_u32(d, LE);
const labname = u8_to_latin1(d.raw.slice(d.ptr, d.ptr + w)).replace(/\x00.*$/, "");
d.ptr += w;
d.ptr += 3;
const labels = [];
{
const n = read_u32(d, LE);
const txtlen = read_u32(d, LE);
const off = [], val = [];
for (let i = 0; i < n; ++i)
off.push(read_u32(d, LE));
for (let i = 0; i < n; ++i)
val.push(read_u32(d, LE));
const str = u8_to_latin1(d.raw.slice(d.ptr, d.ptr + txtlen));
d.ptr += txtlen;
for (let i = 0; i < n; ++i)
labels[val[i]] = str.slice(off[i], str.indexOf("\0", off[i]));
}
const C = value_label_names.indexOf(labname);
if (C == -1)
throw new Error(`unexpected value label |${labname}|`);
for (let R = 1; R < ws["!data"].length; ++R) {
const cell = ws["!data"][R][C];
cell.t = "s";
cell.v = cell.w = labels[cell.v || 0];
}
}
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const wb = _utils.book_new();
_utils.book_append_sheet(wb, ws, "Sheet1");
return wb;
}
function parse(data) {
if (data[0] >= 102 && data[0] <= 115)
return parse_legacy(data);
if (data[0] === 60)
return parse_tagged(data);
throw new Error("Not a DTA file");
}
module.exports = __toCommonJS(dta_exports);
// Annotate the CommonJS export names for ESM import in node:
0 && (module.exports = {
parse,
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set_utils,
version
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});