forked from sheetjs/sheetjs
47 lines
1.5 KiB
JavaScript
47 lines
1.5 KiB
JavaScript
function firstbyte(f,o) {
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switch((o||{}).type || "base64") {
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case 'buffer': return f[0];
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case 'base64': return Base64.decode(f.substr(0,12)).charCodeAt(0);
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case 'binary': return f.charCodeAt(0);
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case 'array': return f[0];
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default: throw new Error("Unrecognized type " + o.type);
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}
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}
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function read_zip(data, opts) {
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var zip, d = data;
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var o = opts||{};
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if(!o.type) o.type = (has_buf && Buffer.isBuffer(data)) ? "buffer" : "base64";
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switch(o.type) {
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case "base64": zip = new jszip(d, { base64:true }); break;
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case "binary": case "array": zip = new jszip(d, { base64:false }); break;
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case "buffer": zip = new jszip(d); break;
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case "file": zip=new jszip(d=_fs.readFileSync(data)); break;
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default: throw new Error("Unrecognized type " + o.type);
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}
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return parse_zip(zip, o);
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}
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function readSync(data, opts) {
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var zip, d = data, isfile = false, n;
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var o = opts||{};
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if(!o.type) o.type = (has_buf && Buffer.isBuffer(data)) ? "buffer" : "base64";
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if(o.type == "file") { isfile = true; o.type = "buffer"; d = _fs.readFileSync(data); }
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switch((n = firstbyte(d, o))) {
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case 0xD0:
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if(isfile) o.type = "file";
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return parse_xlscfb(CFB.read(data, o), o);
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case 0x09: return parse_xlscfb(s2a(o.type === 'base64' ? Base64.decode(data) : data), o);
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case 0x3C: return parse_xlml(d, o);
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case 0x50:
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if(isfile) o.type = "file";
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return read_zip(data, opts);
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default: throw new Error("Unsupported file " + n);
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}
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}
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function readFileSync(data, opts) {
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var o = opts||{}; o.type = 'file';
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return readSync(data, o);
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}
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