forked from sheetjs/sheetjs
73 lines
2.7 KiB
JavaScript
73 lines
2.7 KiB
JavaScript
/* 9.3 Relationships */
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var RELS = ({
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WB: "http://schemas.openxmlformats.org/officeDocument/2006/relationships/officeDocument",
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SHEET: "http://sheetjs.openxmlformats.org/officeDocument/2006/relationships/officeDocument",
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HLINK: "http://schemas.openxmlformats.org/officeDocument/2006/relationships/hyperlink",
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VML: "http://schemas.openxmlformats.org/officeDocument/2006/relationships/vmlDrawing",
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XPATH: "http://schemas.openxmlformats.org/officeDocument/2006/relationships/externalLinkPath",
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XMISS: "http://schemas.microsoft.com/office/2006/relationships/xlExternalLinkPath/xlPathMissing",
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XLINK: "http://schemas.openxmlformats.org/officeDocument/2006/relationships/externalLink",
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VBA: "http://schemas.microsoft.com/office/2006/relationships/vbaProject"
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}/*:any*/);
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/* 9.3.3 Representing Relationships */
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function get_rels_path(file/*:string*/)/*:string*/ {
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var n = file.lastIndexOf("/");
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return file.slice(0,n+1) + '_rels/' + file.slice(n+1) + ".rels";
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}
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function parse_rels(data/*:?string*/, currentFilePath/*:string*/) {
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var rels = {"!id":{}};
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if (!data) return rels;
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if (currentFilePath.charAt(0) !== '/') {
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currentFilePath = '/'+currentFilePath;
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}
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var hash = {};
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(data.match(tagregex)||[]).forEach(function(x) {
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var y = parsexmltag(x);
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/* 9.3.2.2 OPC_Relationships */
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if (y[0] === '<Relationship') {
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var rel = {}; rel.Type = y.Type; rel.Target = y.Target; rel.Id = y.Id; rel.TargetMode = y.TargetMode;
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var canonictarget = y.TargetMode === 'External' ? y.Target : resolve_path(y.Target, currentFilePath);
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rels[canonictarget] = rel;
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hash[y.Id] = rel;
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}
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});
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rels["!id"] = hash;
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return rels;
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}
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XMLNS.RELS = 'http://schemas.openxmlformats.org/package/2006/relationships';
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var RELS_ROOT = writextag('Relationships', null, {
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//'xmlns:ns0': XMLNS.RELS,
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'xmlns': XMLNS.RELS
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});
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/* TODO */
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function write_rels(rels)/*:string*/ {
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var o = [XML_HEADER, RELS_ROOT];
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keys(rels['!id']).forEach(function(rid) {
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o[o.length] = (writextag('Relationship', null, rels['!id'][rid]));
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});
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if(o.length>2){ o[o.length] = ('</Relationships>'); o[1]=o[1].replace("/>",">"); }
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return o.join("");
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}
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var RELS_EXTERN = [RELS.HLINK, RELS.XPATH, RELS.XMISS];
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function add_rels(rels, rId/*:number*/, f, type, relobj, targetmode/*:?string*/)/*:number*/ {
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if(!relobj) relobj = {};
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if(!rels['!id']) rels['!id'] = {};
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if(rId < 0) for(rId = 1; rels['!id']['rId' + rId]; ++rId){/* empty */}
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relobj.Id = 'rId' + rId;
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relobj.Type = type;
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relobj.Target = f;
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if(targetmode) relobj.TargetMode = targetmode;
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else if(RELS_EXTERN.indexOf(relobj.Type) > -1) relobj.TargetMode = "External";
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if(rels['!id'][relobj.Id]) throw new Error("Cannot rewrite rId " + rId);
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rels['!id'][relobj.Id] = relobj;
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rels[('/' + relobj.Target).replace("//","/")] = relobj;
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return rId;
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}
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