sheetjs/bits/90_utils.js
SheetJS b9dae134f2 TXT/PRN
- UTF-16 Unicode Text (TXT) write
- Lotus Formatted Text (PRN) read/write
- DBF version 2 field length adjustments
- throw errors if SheetNames is invalid (fixes #376 h/t @pietersv)
2017-04-02 20:16:03 -04:00

257 lines
9.2 KiB
JavaScript

function decode_row(rowstr/*:string*/)/*:number*/ { return parseInt(unfix_row(rowstr),10) - 1; }
function encode_row(row/*:number*/)/*:string*/ { return "" + (row + 1); }
function fix_row(cstr/*:string*/)/*:string*/ { return cstr.replace(/([A-Z]|^)(\d+)$/,"$1$$$2"); }
function unfix_row(cstr/*:string*/)/*:string*/ { return cstr.replace(/\$(\d+)$/,"$1"); }
function decode_col(colstr/*:string*/)/*:number*/ { var c = unfix_col(colstr), d = 0, i = 0; for(; i !== c.length; ++i) d = 26*d + c.charCodeAt(i) - 64; return d - 1; }
function encode_col(col/*:number*/)/*:string*/ { var s=""; for(++col; col; col=Math.floor((col-1)/26)) s = String.fromCharCode(((col-1)%26) + 65) + s; return s; }
function fix_col(cstr/*:string*/)/*:string*/ { return cstr.replace(/^([A-Z])/,"$$$1"); }
function unfix_col(cstr/*:string*/)/*:string*/ { return cstr.replace(/^\$([A-Z])/,"$1"); }
function split_cell(cstr/*:string*/)/*:Array<string>*/ { return cstr.replace(/(\$?[A-Z]*)(\$?\d*)/,"$1,$2").split(","); }
function decode_cell(cstr/*:string*/)/*:CellAddress*/ { var splt = split_cell(cstr); return { c:decode_col(splt[0]), r:decode_row(splt[1]) }; }
function encode_cell(cell/*:CellAddress*/)/*:string*/ { return encode_col(cell.c) + encode_row(cell.r); }
function fix_cell(cstr/*:string*/)/*:string*/ { return fix_col(fix_row(cstr)); }
function unfix_cell(cstr/*:string*/)/*:string*/ { return unfix_col(unfix_row(cstr)); }
function decode_range(range/*:string*/)/*:Range*/ { var x =range.split(":").map(decode_cell); return {s:x[0],e:x[x.length-1]}; }
/*# if only one arg, it is assumed to be a Range. If 2 args, both are cell addresses */
function encode_range(cs/*:CellAddrSpec|Range*/,ce/*:?CellAddrSpec*/)/*:string*/ {
if(typeof ce === 'undefined' || typeof ce === 'number') {
/*:: if(!(cs instanceof Range)) throw "unreachable"; */
return encode_range(cs.s, cs.e);
}
/*:: if((cs instanceof Range)) throw "unreachable"; */
if(typeof cs !== 'string') cs = encode_cell((cs/*:any*/));
if(typeof ce !== 'string') ce = encode_cell((ce/*:any*/));
/*:: if(typeof cs !== 'string') throw "unreachable"; */
/*:: if(typeof ce !== 'string') throw "unreachable"; */
return cs == ce ? cs : cs + ":" + ce;
}
function safe_decode_range(range/*:string*/)/*:Range*/ {
var o = {s:{c:0,r:0},e:{c:0,r:0}};
var idx = 0, i = 0, cc = 0;
var len = range.length;
for(idx = 0; i < len; ++i) {
if((cc=range.charCodeAt(i)-64) < 1 || cc > 26) break;
idx = 26*idx + cc;
}
o.s.c = --idx;
for(idx = 0; i < len; ++i) {
if((cc=range.charCodeAt(i)-48) < 0 || cc > 9) break;
idx = 10*idx + cc;
}
o.s.r = --idx;
if(i === len || range.charCodeAt(++i) === 58) { o.e.c=o.s.c; o.e.r=o.s.r; return o; }
for(idx = 0; i != len; ++i) {
if((cc=range.charCodeAt(i)-64) < 1 || cc > 26) break;
idx = 26*idx + cc;
}
o.e.c = --idx;
for(idx = 0; i != len; ++i) {
if((cc=range.charCodeAt(i)-48) < 0 || cc > 9) break;
idx = 10*idx + cc;
}
o.e.r = --idx;
return o;
}
function safe_format_cell(cell/*:Cell*/, v/*:any*/) {
var q = (cell.t == 'd' && v instanceof Date);
if(cell.z != null) try { return (cell.w = SSF.format(cell.z, q ? datenum(v) : v)); } catch(e) { }
try { return (cell.w = SSF.format((cell.XF||{}).ifmt||(q ? 14 : 0), q ? datenum(v) : v)); } catch(e) { return ''+v; }
}
function format_cell(cell/*:Cell*/, v/*:any*/, o/*:any*/) {
if(cell == null || cell.t == null || cell.t == 'z') return "";
if(cell.w !== undefined) return cell.w;
if(cell.t == 'd' && !cell.z && o && o.dateNF) cell.z = o.dateNF;
if(v == undefined) return safe_format_cell(cell, cell.v, o);
return safe_format_cell(cell, v, o);
}
function sheet_to_json(sheet/*:Worksheet*/, opts/*:?Sheet2JSONOpts*/){
var val, row, range, header = 0, offset = 1, r, hdr/*:Array<any>*/ = [], isempty, R, C, v, vv;
var o = opts != null ? opts : {};
var raw = o.raw;
var defval = o.defval;
if(sheet == null || sheet["!ref"] == null) return [];
range = o.range != null ? o.range : sheet["!ref"];
if(o.header === 1) header = 1;
else if(o.header === "A") header = 2;
else if(Array.isArray(o.header)) header = 3;
switch(typeof range) {
case 'string': r = safe_decode_range(range); break;
case 'number': r = safe_decode_range(sheet["!ref"]); r.s.r = range; break;
default: r = range;
}
if(header > 0) offset = 0;
var rr = encode_row(r.s.r);
var cols = new Array(r.e.c-r.s.c+1);
var out = new Array(r.e.r-r.s.r-offset+1);
var outi = 0;
for(C = r.s.c; C <= r.e.c; ++C) {
cols[C] = encode_col(C);
val = sheet[cols[C] + rr];
switch(header) {
case 1: hdr[C] = C; break;
case 2: hdr[C] = cols[C]; break;
case 3: hdr[C] = o.header[C - r.s.c]; break;
default:
if(val == null) continue;
vv = v = format_cell(val, null, o);
var counter = 0;
for(var CC = 0; CC < hdr.length; ++CC) if(hdr[CC] == vv) vv = v + "_" + (++counter);
hdr[C] = vv;
}
}
for (R = r.s.r + offset; R <= r.e.r; ++R) {
rr = encode_row(R);
isempty = true;
if(header === 1) row = [];
else {
row = {};
if(Object.defineProperty) try { Object.defineProperty(row, '__rowNum__', {value:R, enumerable:false}); } catch(e) { row.__rowNum__ = R; }
else row.__rowNum__ = R;
}
for (C = r.s.c; C <= r.e.c; ++C) {
val = sheet[cols[C] + rr];
if(val === undefined || val.t === undefined) {
if(defval === undefined) continue;
if(hdr[C] != null) { row[hdr[C]] = defval; isempty = false; }
continue;
}
v = val.v;
switch(val.t){
case 'z': if(v == null) break; continue;
case 'e': continue;
case 's': case 'd': case 'b': case 'n': break;
default: throw new Error('unrecognized type ' + val.t);
}
if(hdr[C] != null) {
if(v == null) {
if(defval !== undefined) row[hdr[C]] = defval;
else if(raw && v === null) row[hdr[C]] = null;
else continue;
} else {
row[hdr[C]] = raw ? v : format_cell(val,v,o);
}
isempty = false;
}
}
if((isempty === false) || (header === 1 ? o.blankrows !== false : !!o.blankrows)) out[outi++] = row;
}
out.length = outi;
return out;
}
function sheet_to_csv(sheet/*:Worksheet*/, opts/*:?Sheet2CSVOpts*/) {
var out = "", txt = "", qreg = /"/g;
var o = opts == null ? {} : opts;
if(sheet == null || sheet["!ref"] == null) return "";
var r = safe_decode_range(sheet["!ref"]);
var FS = o.FS !== undefined ? o.FS : ",", fs = FS.charCodeAt(0);
var RS = o.RS !== undefined ? o.RS : "\n", rs = RS.charCodeAt(0);
var endregex = new RegExp((FS=="|" ? "\\|" : FS)+"+$");
var row = "", rr = "", cols = [];
var i = 0, cc = 0, val;
var R = 0, C = 0;
for(C = r.s.c; C <= r.e.c; ++C) cols[C] = encode_col(C);
for(R = r.s.r; R <= r.e.r; ++R) {
var isempty = true;
row = "";
rr = encode_row(R);
for(C = r.s.c; C <= r.e.c; ++C) {
val = sheet[cols[C] + rr];
if(val == null) txt = "";
else if(val.v != null) {
isempty = false;
txt = ''+format_cell(val, null, o);
for(i = 0, cc = 0; i !== txt.length; ++i) if((cc = txt.charCodeAt(i)) === fs || cc === rs || cc === 34) {
txt = "\"" + txt.replace(qreg, '""') + "\""; break; }
} else if(val.f != null && !val.F) {
isempty = false;
txt = '=' + val.f; if(txt.indexOf(",") >= 0) txt = '"' + txt.replace(qreg, '""') + '"';
} else txt = "";
/* NOTE: Excel CSV does not support array formulae */
row += (C === r.s.c ? "" : FS) + txt;
}
if(o.blankrows === false && isempty) continue;
if(o.strip) row = row.replace(endregex,"");
out += row + RS;
}
return out;
}
var make_csv = sheet_to_csv;
function sheet_to_txt(sheet/*:Worksheet*/, opts/*:?Sheet2CSVOpts*/) {
if(!opts) opts = {}; opts.FS = "\t"; opts.RS = "\n";
var s = sheet_to_csv(sheet, opts);
if(typeof cptable == 'undefined') return s;
var o = cptable.utils.encode(1200, s);
return "\xff\xfe" + o;
}
function sheet_to_formulae(sheet/*:Worksheet*/)/*:Array<string>*/ {
var y = "", x, val="";
if(sheet == null || sheet["!ref"] == null) return [];
var r = safe_decode_range(sheet['!ref']), rr = "", cols = [], C;
var cmds = new Array((r.e.r-r.s.r+1)*(r.e.c-r.s.c+1));
var i = 0;
for(C = r.s.c; C <= r.e.c; ++C) cols[C] = encode_col(C);
for(var R = r.s.r; R <= r.e.r; ++R) {
rr = encode_row(R);
for(C = r.s.c; C <= r.e.c; ++C) {
y = cols[C] + rr;
x = sheet[y];
val = "";
if(x === undefined) continue;
else if(x.F != null) {
y = x.F;
if(!x.f) continue;
val = x.f;
if(y.indexOf(":") == -1) y = y + ":" + y;
}
if(x.f != null) val = x.f;
else if(x.t == 'z') continue;
else if(x.t == 'n' && x.v != null) val = "" + x.v;
else if(x.t == 'b') val = x.v ? "TRUE" : "FALSE";
else if(x.w !== undefined) val = "'" + x.w;
else if(x.v === undefined) continue;
else if(x.t == 's') val = "'" + x.v;
else val = ""+x.v;
cmds[i++] = y + "=" + val;
}
}
cmds.length = i;
return cmds;
}
var utils = {
encode_col: encode_col,
encode_row: encode_row,
encode_cell: encode_cell,
encode_range: encode_range,
decode_col: decode_col,
decode_row: decode_row,
split_cell: split_cell,
decode_cell: decode_cell,
decode_range: decode_range,
format_cell: format_cell,
get_formulae: sheet_to_formulae,
make_csv: sheet_to_csv,
make_json: sheet_to_json,
make_formulae: sheet_to_formulae,
aoa_to_sheet: aoa_to_sheet,
table_to_sheet: parse_dom_table,
table_to_book: table_to_book,
sheet_to_csv: sheet_to_csv,
sheet_to_json: sheet_to_json,
sheet_to_formulae: sheet_to_formulae,
sheet_to_row_object_array: sheet_to_json
};