exceljs
Version:
Excel Workbook Manager - Read and Write xlsx and csv Files.
276 lines (233 loc) • 9.38 kB
JavaScript
"use strict";
function _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _unsupportedIterableToArray(arr, i) || _nonIterableRest(); }
function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }
function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(n); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }
function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }
function _iterableToArrayLimit(arr, i) { if (typeof Symbol === "undefined" || !(Symbol.iterator in Object(arr))) return; var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"] != null) _i["return"](); } finally { if (_d) throw _e; } } return _arr; }
function _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }
function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); if (enumerableOnly) symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; }); keys.push.apply(keys, symbols); } return keys; }
function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; if (i % 2) { ownKeys(Object(source), true).forEach(function (key) { _defineProperty(target, key, source[key]); }); } else if (Object.getOwnPropertyDescriptors) { Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)); } else { ownKeys(Object(source)).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } } return target; }
function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }
// =========================================================================
// Column Letter to Number conversion
var colCache = {
_dictionary: ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z'],
_l2n: {},
_n2l: [],
_level: function _level(n) {
if (n <= 26) {
return 1;
}
if (n <= 26 * 26) {
return 2;
}
return 3;
},
_fill: function _fill(level) {
var c;
var v;
var l1;
var l2;
var l3;
var n = 1;
if (level >= 1) {
while (n <= 26) {
c = this._dictionary[n - 1];
this._n2l[n] = c;
this._l2n[c] = n;
n++;
}
}
if (level >= 2) {
while (n <= 26 + 26 * 26) {
v = n - (26 + 1);
l1 = v % 26;
l2 = Math.floor(v / 26);
c = this._dictionary[l2] + this._dictionary[l1];
this._n2l[n] = c;
this._l2n[c] = n;
n++;
}
}
if (level >= 3) {
while (n <= 16384) {
v = n - (26 * 26 + 26 + 1);
l1 = v % 26;
l2 = Math.floor(v / 26) % 26;
l3 = Math.floor(v / (26 * 26));
c = this._dictionary[l3] + this._dictionary[l2] + this._dictionary[l1];
this._n2l[n] = c;
this._l2n[c] = n;
n++;
}
}
},
l2n: function l2n(l) {
if (!this._l2n[l]) {
this._fill(l.length);
}
if (!this._l2n[l]) {
throw new Error("Out of bounds. Invalid column letter: ".concat(l));
}
return this._l2n[l];
},
n2l: function n2l(n) {
if (n < 1 || n > 16384) {
throw new Error("".concat(n, " is out of bounds. Excel supports columns from 1 to 16384"));
}
if (!this._n2l[n]) {
this._fill(this._level(n));
}
return this._n2l[n];
},
// =========================================================================
// Address processing
_hash: {},
// check if value looks like an address
validateAddress: function validateAddress(value) {
if (!value.match(/^[A-Z]+\d+$/)) {
throw new Error("Invalid Address: ".concat(value));
}
return true;
},
// convert address string into structure
decodeAddress: function decodeAddress(value) {
var addr = this._hash[value];
if (addr) {
return addr;
}
var matchCol = value.match(/[A-Z]+/);
var col;
var colNumber;
if (matchCol) {
col = matchCol[0];
colNumber = this.l2n(col);
}
var matchRow = value.match(/\d+/);
var row;
var rowNumber;
if (matchRow) {
row = matchRow[0];
rowNumber = parseInt(row, 10);
} // in case $row$col
value = (col || '') + (row || '');
var address = {
address: value,
col: colNumber,
row: rowNumber,
$col$row: "$".concat(col || '', "$").concat(row || '')
}; // mem fix - cache only the tl 100x100 square
if (colNumber <= 100 && rowNumber <= 100) {
this._hash[value] = address;
this._hash[address.$col$row] = address;
}
return address;
},
// convert r,c into structure (if only 1 arg, assume r is address string)
getAddress: function getAddress(r, c) {
if (c) {
var address = this.n2l(c) + r;
return this.decodeAddress(address);
}
return this.decodeAddress(r);
},
// convert [address], [tl:br] into address structures
decode: function decode(value) {
var parts = value.split(':');
if (parts.length === 2) {
var tl = this.decodeAddress(parts[0]);
var br = this.decodeAddress(parts[1]);
var result = {
top: Math.min(tl.row, br.row),
left: Math.min(tl.col, br.col),
bottom: Math.max(tl.row, br.row),
right: Math.max(tl.col, br.col)
}; // reconstruct tl, br and dimensions
result.tl = this.n2l(result.left) + result.top;
result.br = this.n2l(result.right) + result.bottom;
result.dimensions = "".concat(result.tl, ":").concat(result.br);
return result;
}
return this.decodeAddress(value);
},
// convert [sheetName!][$]col[$]row[[$]col[$]row] into address or range structures
decodeEx: function decodeEx(value) {
var groups = value.match(/(?:(?:(?:'((?:[^']|'')*)')|([^'^ !]*))!)?(.*)/);
var sheetName = groups[1] || groups[2]; // Qouted and unqouted groups
var reference = groups[3]; // Remaining address
var parts = reference.split(':');
if (parts.length > 1) {
var tl = this.decodeAddress(parts[0]);
var br = this.decodeAddress(parts[1]);
var top = Math.min(tl.row, br.row);
var left = Math.min(tl.col, br.col);
var bottom = Math.max(tl.row, br.row);
var right = Math.max(tl.col, br.col);
tl = this.n2l(left) + top;
br = this.n2l(right) + bottom;
return {
top: top,
left: left,
bottom: bottom,
right: right,
sheetName: sheetName,
tl: {
address: tl,
col: left,
row: top,
$col$row: "$".concat(this.n2l(left), "$").concat(top),
sheetName: sheetName
},
br: {
address: br,
col: right,
row: bottom,
$col$row: "$".concat(this.n2l(right), "$").concat(bottom),
sheetName: sheetName
},
dimensions: "".concat(tl, ":").concat(br)
};
}
if (reference.startsWith('#')) {
return sheetName ? {
sheetName: sheetName,
error: reference
} : {
error: reference
};
}
var address = this.decodeAddress(reference);
return sheetName ? _objectSpread({
sheetName: sheetName
}, address) : address;
},
// convert row,col into address string
encodeAddress: function encodeAddress(row, col) {
return colCache.n2l(col) + row;
},
// convert row,col into string address or t,l,b,r into range
encode: function encode() {
switch (arguments.length) {
case 2:
return colCache.encodeAddress(arguments[0], arguments[1]);
case 4:
return "".concat(colCache.encodeAddress(arguments[0], arguments[1]), ":").concat(colCache.encodeAddress(arguments[2], arguments[3]));
default:
throw new Error('Can only encode with 2 or 4 arguments');
}
},
// return true if address is contained within range
inRange: function inRange(range, address) {
var _range = _slicedToArray(range, 5),
left = _range[0],
top = _range[1],
right = _range[3],
bottom = _range[4];
var _address = _slicedToArray(address, 2),
col = _address[0],
row = _address[1];
return col >= left && col <= right && row >= top && row <= bottom;
}
};
module.exports = colCache;
//# sourceMappingURL=col-cache.js.map