forked from sheetjs/sheetjs
106 lines
3.6 KiB
JavaScript
106 lines
3.6 KiB
JavaScript
function getdatastr(data)/*:?string*/ {
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if(!data) return null;
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if(data.content && data.type) return cc2str(data.content, true);
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if(data.data) return debom(data.data);
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if(data.asNodeBuffer && has_buf) return debom(data.asNodeBuffer().toString('binary'));
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if(data.asBinary) return debom(data.asBinary());
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if(data._data && data._data.getContent) return debom(cc2str(Array.prototype.slice.call(data._data.getContent(),0)));
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return null;
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}
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function getdatabin(data) {
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if(!data) return null;
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if(data.data) return char_codes(data.data);
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if(data.asNodeBuffer && has_buf) return data.asNodeBuffer();
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if(data._data && data._data.getContent) {
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var o = data._data.getContent();
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if(typeof o == "string") return char_codes(o);
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return Array.prototype.slice.call(o);
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}
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if(data.content && data.type) return data.content;
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return null;
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}
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function getdata(data) { return (data && data.name.slice(-4) === ".bin") ? getdatabin(data) : getdatastr(data); }
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/* Part 2 Section 10.1.2 "Mapping Content Types" Names are case-insensitive */
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/* OASIS does not comment on filename case sensitivity */
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function safegetzipfile(zip, file/*:string*/) {
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var k = zip.FullPaths || keys(zip.files);
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var f = file.toLowerCase().replace(/[\/]/g, '\\'), g = f.replace(/\\/g,'\/');
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for(var i=0; i<k.length; ++i) {
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var n = k[i].replace(/^Root Entry[\/]/,"").toLowerCase();
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if(f == n || g == n) return zip.files ? zip.files[k[i]] : zip.FileIndex[i];
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}
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return null;
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}
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function getzipfile(zip, file/*:string*/) {
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var o = safegetzipfile(zip, file);
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if(o == null) throw new Error("Cannot find file " + file + " in zip");
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return o;
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}
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function getzipdata(zip, file/*:string*/, safe/*:?boolean*/)/*:any*/ {
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if(!safe) return getdata(getzipfile(zip, file));
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if(!file) return null;
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try { return getzipdata(zip, file); } catch(e) { return null; }
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}
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function getzipstr(zip, file/*:string*/, safe/*:?boolean*/)/*:?string*/ {
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if(!safe) return getdatastr(getzipfile(zip, file));
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if(!file) return null;
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try { return getzipstr(zip, file); } catch(e) { return null; }
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}
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function getzipbin(zip, file/*:string*/, safe/*:?boolean*/)/*:any*/ {
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if(!safe) return getdatabin(getzipfile(zip, file));
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if(!file) return null;
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try { return getzipbin(zip, file); } catch(e) { return null; }
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}
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function zipentries(zip) {
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var k = zip.FullPaths || keys(zip.files), o = [];
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for(var i = 0; i < k.length; ++i) if(k[i].slice(-1) != '/') o.push(k[i].replace(/^Root Entry[\/]/, ""));
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return o.sort();
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}
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function zip_add_file(zip, path, content) {
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if(zip.FullPaths) {
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if(typeof content == "string") {
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var res;
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if(has_buf) res = Buffer_from(content);
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/* TODO: investigate performance in Edge 13 */
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//else if(typeof TextEncoder !== "undefined") res = new TextEncoder().encode(content);
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else res = utf8decode(content);
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return CFB.utils.cfb_add(zip, path, res);
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}
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CFB.utils.cfb_add(zip, path, content);
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}
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else zip.file(path, content);
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}
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function zip_new() { return CFB.utils.cfb_new(); }
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function zip_read(d, o) {
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switch(o.type) {
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case "base64": return CFB.read(d, { type: "base64" });
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case "binary": return CFB.read(d, { type: "binary" });
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case "buffer": case "array": return CFB.read(d, { type: "buffer" });
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}
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throw new Error("Unrecognized type " + o.type);
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}
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function resolve_path(path/*:string*/, base/*:string*/)/*:string*/ {
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if(path.charAt(0) == "/") return path.slice(1);
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var result = base.split('/');
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if(base.slice(-1) != "/") result.pop(); // folder path
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var target = path.split('/');
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while (target.length !== 0) {
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var step = target.shift();
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if (step === '..') result.pop();
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else if (step !== '.') result.push(step);
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}
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return result.join('/');
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}
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