sheetjs/bits/79_html.js
reviewher c654a2656b archaic browser compatibility and testing
IE11 Compatibility View levels 5 and 7 (see #952)
Firefox 5.0+ passes browser test (see #950)
2018-01-11 03:07:07 -05:00

165 lines
6.6 KiB
JavaScript

/* note: browser DOM element cannot see mso- style attrs, must parse */
var HTML_ = (function() {
function html_to_sheet(str/*:string*/, _opts)/*:Workbook*/ {
var opts = _opts || {};
if(DENSE != null && opts.dense == null) opts.dense = DENSE;
var ws/*:Worksheet*/ = opts.dense ? ([]/*:any*/) : ({}/*:any*/);
var mtch/*:any*/ = str.match(/<table/i);
if(!mtch) throw new Error("Invalid HTML: could not find <table>");
var mtch2/*:any*/ = str.match(/<\/table/i);
var i/*:number*/ = mtch.index, j/*:number*/ = mtch2 && mtch2.index || str.length;
var rows = split_regex(str.slice(i, j), /(:?<tr[^>]*>)/i, "<tr>");
var R = -1, C = 0, RS = 0, CS = 0;
var range/*:Range*/ = {s:{r:10000000, c:10000000},e:{r:0,c:0}};
var merges/*:Array<Range>*/ = [], midx = 0;
for(i = 0; i < rows.length; ++i) {
var row = rows[i].trim();
var hd = row.slice(0,3).toLowerCase();
if(hd == "<tr") { ++R; C = 0; continue; }
if(hd != "<td") continue;
var cells = row.split(/<\/td>/i);
for(j = 0; j < cells.length; ++j) {
var cell = cells[j].trim();
if(cell.slice(0,3).toLowerCase() != "<td") continue;
var m = cell, cc = 0;
/* TODO: parse styles etc */
while(m.charAt(0) == "<" && (cc = m.indexOf(">")) > -1) m = m.slice(cc+1);
var tag = parsexmltag(cell.slice(0, cell.indexOf(">")));
CS = tag.colspan ? +tag.colspan : 1;
if((RS = +tag.rowspan)>0 || CS>1) merges.push({s:{r:R,c:C},e:{r:R + (RS||1) - 1, c:C + CS - 1}});
var _t/*:string*/ = tag.t || "";
/* TODO: generate stub cells */
if(!m.length) { C += CS; continue; }
m = htmldecode(unescapexml(m));
if(range.s.r > R) range.s.r = R; if(range.e.r < R) range.e.r = R;
if(range.s.c > C) range.s.c = C; if(range.e.c < C) range.e.c = C;
if(!m.length) continue;
var o/*:Cell*/ = {t:'s', v:m};
if(opts.raw || !m.trim().length || _t == 's'){}
else if(m === 'TRUE') o = {t:'b', v:true};
else if(m === 'FALSE') o = {t:'b', v:false};
else if(!isNaN(fuzzynum(m))) o = {t:'n', v:fuzzynum(m)};
else if(!isNaN(fuzzydate(m).getDate())) {
o = ({t:'d', v:parseDate(m)}/*:any*/);
if(!opts.cellDates) o = ({t:'n', v:datenum(o.v)}/*:any*/);
o.z = opts.dateNF || SSF._table[14];
}
if(opts.dense) { if(!ws[R]) ws[R] = []; ws[R][C] = o; }
else ws[encode_cell({r:R, c:C})] = o;
C += CS;
}
}
ws['!ref'] = encode_range(range);
return ws;
}
function html_to_book(str/*:string*/, opts)/*:Workbook*/ {
return sheet_to_workbook(html_to_sheet(str, opts), opts);
}
function make_html_row(ws/*:Worksheet*/, r/*:Range*/, R/*:number*/, o/*:Sheet2HTMLOpts*/)/*:string*/ {
var M/*:Array<Range>*/ = (ws['!merges'] ||[]);
var oo/*:Array<string>*/ = [];
var nullcell = "<td>" + (o.editable ? '<span contenteditable="true"></span>' : "" ) + "</td>";
for(var C = r.s.c; C <= r.e.c; ++C) {
var RS = 0, CS = 0;
for(var j = 0; j < M.length; ++j) {
if(M[j].s.r > R || M[j].s.c > C) continue;
if(M[j].e.r < R || M[j].e.c < C) continue;
if(M[j].s.r < R || M[j].s.c < C) { RS = -1; break; }
RS = M[j].e.r - M[j].s.r + 1; CS = M[j].e.c - M[j].s.c + 1; break;
}
if(RS < 0) continue;
var coord = encode_cell({r:R,c:C});
var cell = o.dense ? (ws[R]||[])[C] : ws[coord];
if(!cell || cell.v == null) { oo.push(nullcell); continue; }
/* TODO: html entities */
var w = cell.h || escapexml(cell.w || (format_cell(cell), cell.w) || "");
var sp = {};
if(RS > 1) sp.rowspan = RS;
if(CS > 1) sp.colspan = CS;
sp.t = cell.t;
if(o.editable) w = '<span contenteditable="true">' + w + '</span>';
sp.id = "sjs-" + coord;
oo.push(writextag('td', w, sp));
}
var preamble = "<tr>";
return preamble + oo.join("") + "</tr>";
}
function make_html_preamble(ws/*:Worksheet*/, R/*:Range*/, o/*:Sheet2HTMLOpts*/)/*:string*/ {
var out/*:Array<string>*/ = [];
return out.join("") + '<table>';
}
var _BEGIN = '<html><head><meta charset="utf-8"/><title>SheetJS Table Export</title></head><body>';
var _END = '</body></html>';
function sheet_to_html(ws/*:Worksheet*/, opts/*:?Sheet2HTMLOpts*/, wb/*:?Workbook*/)/*:string*/ {
var o = opts || {};
var header = o.header != null ? o.header : _BEGIN;
var footer = o.footer != null ? o.footer : _END;
var out/*:Array<string>*/ = [header];
var r = decode_range(ws['!ref']);
o.dense = Array.isArray(ws);
out.push(make_html_preamble(ws, r, o));
for(var R = r.s.r; R <= r.e.r; ++R) out.push(make_html_row(ws, r, R, o));
out.push("</table>" + footer);
return out.join("");
}
return {
to_workbook: html_to_book,
to_sheet: html_to_sheet,
_row: make_html_row,
BEGIN: _BEGIN,
END: _END,
_preamble: make_html_preamble,
from_sheet: sheet_to_html
};
})();
function parse_dom_table(table/*:HTMLElement*/, _opts/*:?any*/)/*:Worksheet*/ {
var opts = _opts || {};
if(DENSE != null) opts.dense = DENSE;
var ws/*:Worksheet*/ = opts.dense ? ([]/*:any*/) : ({}/*:any*/);
var rows/*:HTMLCollection<HTMLTableRowElement>*/ = table.getElementsByTagName('tr');
var range/*:Range*/ = {s:{r:0,c:0},e:{r:rows.length - 1,c:0}};
var merges/*:Array<Range>*/ = [], midx = 0;
var R = 0, _C = 0, C = 0, RS = 0, CS = 0;
for(; R < rows.length; ++R) {
var row/*:HTMLTableRowElement*/ = rows[R];
var elts/*:HTMLCollection<HTMLTableCellElement>*/ = (row.children/*:any*/);
for(_C = C = 0; _C < elts.length; ++_C) {
var elt/*:HTMLTableCellElement*/ = elts[_C], v = htmldecode(elts[_C].innerHTML);
for(midx = 0; midx < merges.length; ++midx) {
var m/*:Range*/ = merges[midx];
if(m.s.c == C && m.s.r <= R && R <= m.e.r) { C = m.e.c+1; midx = -1; }
}
/* TODO: figure out how to extract nonstandard mso- style */
CS = +elt.getAttribute("colspan") || 1;
if((RS = +elt.getAttribute("rowspan"))>0 || CS>1) merges.push({s:{r:R,c:C},e:{r:R + (RS||1) - 1, c:C + CS - 1}});
var o/*:Cell*/ = {t:'s', v:v};
var _t/*:string*/ = elt.getAttribute("t") || "";
if(v != null) {
if(v.length == 0) o.t = _t || 'z';
else if(opts.raw || v.trim().length == 0 || _t == "s"){}
else if(v === 'TRUE') o = {t:'b', v:true};
else if(v === 'FALSE') o = {t:'b', v:false};
else if(!isNaN(fuzzynum(v))) o = {t:'n', v:fuzzynum(v)};
else if(!isNaN(fuzzydate(v).getDate())) {
o = ({t:'d', v:parseDate(v)}/*:any*/);
if(!opts.cellDates) o = ({t:'n', v:datenum(o.v)}/*:any*/);
o.z = opts.dateNF || SSF._table[14];
}
}
if(opts.dense) { if(!ws[R]) ws[R] = []; ws[R][C] = o; }
else ws[encode_cell({c:C, r:R})] = o;
if(range.e.c < C) range.e.c = C;
C += CS;
}
}
ws['!merges'] = merges;
ws['!ref'] = encode_range(range);
return ws;
}
function table_to_book(table/*:HTMLElement*/, opts/*:?any*/)/*:Workbook*/ {
return sheet_to_workbook(parse_dom_table(table, opts), opts);
}