forked from sheetjs/sheetjs
113 lines
3.5 KiB
JavaScript
113 lines
3.5 KiB
JavaScript
var _chr = function(c) { return String.fromCharCode(c); };
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function encode_col(col) { var s=""; for(++col; col; col=Math.floor((col-1)/26)) s = _chr(((col-1)%26) + 65) + s; return s; }
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function encode_row(row) { return "" + (row + 1); }
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function encode_cell(cell) { return encode_col(cell.c) + encode_row(cell.r); }
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function decode_col(c) { var d = 0, i = 0; for(; i !== c.length; ++i) d = 26*d + c.charCodeAt(i) - 64; return d - 1; }
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function decode_row(rowstr) { return Number(rowstr) - 1; }
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function split_cell(cstr) { return cstr.replace(/(\$?[A-Z]*)(\$?[0-9]*)/,"$1,$2").split(","); }
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function decode_cell(cstr) { var splt = split_cell(cstr); return { c:decode_col(splt[0]), r:decode_row(splt[1]) }; }
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function decode_range(range) { var x =range.split(":").map(decode_cell); return {s:x[0],e:x[x.length-1]}; }
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function encode_range(range) { return encode_cell(range.s) + ":" + encode_cell(range.e); }
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function sheet_to_row_object_array(sheet, opts){
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var val, row, r, hdr = {}, isempty, R, C, v;
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var out = [];
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opts = opts || {};
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if(!sheet["!ref"]) return out;
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r = XLSX.utils.decode_range(sheet["!ref"]);
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for(R=r.s.r, C = r.s.c; C <= r.e.c; ++C) {
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val = sheet[encode_cell({c:C,r:R})];
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if(val){
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switch(val.t) {
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case 's': case 'str': hdr[C] = val.v; break;
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case 'n': hdr[C] = val.v; break;
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}
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}
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}
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for (R = r.s.r + 1; R <= r.e.r; ++R) {
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isempty = true;
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/* row index available as __rowNum__ */
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row = Object.create({ __rowNum__ : R });
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for (C = r.s.c; C <= r.e.c; ++C) {
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val = sheet[encode_cell({c: C,r: R})];
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if(!val) continue;
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v = (val || {}).v;
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switch(val.t){
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case 's': case 'str': case 'b': case 'n':
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if(val.v !== undefined) {
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row[hdr[C]] = val.v;
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isempty = false;
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}
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break;
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case 'e': break; /* throw */
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default: throw 'unrecognized type ' + val.t;
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}
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}
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if(!isempty) out.push(row);
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}
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return out;
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}
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function sheet_to_csv(sheet, opts) {
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var stringify = function stringify(val) {
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if(!val.t) return "";
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switch(val.t){
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case 'n': return String(val.v);
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case 's': case 'str':
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if(typeof val.v === 'undefined') return "";
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return JSON.stringify(val.v);
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case 'b': return val.v ? "TRUE" : "FALSE";
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case 'e': return ""; /* throw out value in case of error */
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default: throw 'unrecognized type ' + val.t;
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}
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};
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var out = "", txt = "";
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opts = opts || {};
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if(!sheet["!ref"]) return out;
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var r = XLSX.utils.decode_range(sheet["!ref"]);
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for(var R = r.s.r; R <= r.e.r; ++R) {
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var row = [];
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for(var C = r.s.c; C <= r.e.c; ++C) {
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var val = sheet[XLSX.utils.encode_cell({c:C,r:R})];
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if(!val) { row.push(""); continue; }
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txt = stringify(val);
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row.push(String(txt).replace(/\\r\\n/g,"\n").replace(/\\t/g,"\t").replace(/\\\\/g,"\\").replace("\\\"","\"\""));
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}
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out += row.join(opts.FS||",") + (opts.RS||"\n");
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}
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return out;
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}
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var make_csv = sheet_to_csv;
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function get_formulae(ws) {
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var cmds = [];
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for(var y in ws) if(y[0] !=='!' && ws.hasOwnProperty(y)) {
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var x = ws[y];
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var val = "";
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if(x.f) val = x.f;
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else if(typeof x.v === 'number') val = x.v;
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else val = x.v;
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cmds.push(y + "=" + val);
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}
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return cmds;
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}
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XLSX.utils = {
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encode_col: encode_col,
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encode_row: encode_row,
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encode_cell: encode_cell,
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encode_range: encode_range,
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decode_col: decode_col,
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decode_row: decode_row,
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split_cell: split_cell,
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decode_cell: decode_cell,
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decode_range: decode_range,
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sheet_to_csv: sheet_to_csv,
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make_csv: sheet_to_csv,
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get_formulae: get_formulae,
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sheet_to_row_object_array: sheet_to_row_object_array
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};
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