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exports.read = read;
var q = require("q");
var _ = require("underscore");
var unzip = require("unzip");
var path = require("path");
var fs = require("fs");
var Buffers = require("buffers");
var xmlreader = require("./xmlreader");
var documents = require("./documents");
var DocumentXmlReader = require("./document-xml-reader").DocumentXmlReader;
var Result = require("./results").Result;
function read(docxFile) {
if (_.isString(docxFile)) {
var zipPath = docxFile;
docxFile = openZip(zipPath);
}
return q.when(docxFile, function(docxFile) {
return q.all([
readXmlFile(docxFile, "word/_rels/document.xml.rels"),
readXmlFile(docxFile, "word/document.xml")
]).spread(function(relationshipsXml, documentXml) {
var relationships = relationshipsXml ? readRelationships(relationshipsXml) : {};
var reader = new DocumentXmlReader(relationships, docxFile);
return reader.convertXmlToDocument(documentXml);
});
});
}
function openZip(zipPath) {
var deferred = q.defer();
var names = [];
var files = {};
fs.createReadStream(zipPath)
.pipe(unzip.Parse())
.on("entry", function(entry) {
names.push(entry.path);
files[entry.path] = readEntry(entry);
})
.on("close", function() {
deferred.resolve(zipFile);
})
.on("error", function(err) {
deferred.reject(err);
});
var exists = function(path) {
return names.indexOf(path) !== -1;
}
function readEntry(entry) {
var readDeferred = q.defer();
var buffers = new Buffers();
entry
.on("data", function(data) {
buffers.push(data);
})
.on("end", function() {
readDeferred.resolve(buffers);
})
.on("error", readDeferred.reject.bind(readDeferred))
return readDeferred.promise;
}
var zipFile = {
read: function(path, encoding) {
if (!exists(path)) {
return q.reject(new Error("No file in zip: " + path));
}
return files[path].then(function(buffer) {
if (encoding) {
return buffer.toString(encoding);
} else {
return buffer;
}
});
},
exists: exists
};
return deferred.promise;
}
function readXmlFile(docxFile, path) {
if (docxFile.exists(path)) {
return docxFile.read(path, "utf-8")
.then(xmlreader.read);
} else {
return null;
}
}
function readRelationships(relationshipsXml) {
var relationships = {};
relationshipsXml.root.children.forEach(function(child) {
if (child.name === "Relationship") {
relationships[child.attributes.Id] = {
target: child.attributes.Target
};
}
});
return relationships;
}
function parseXml(string) {
return xmlreader.read(string);
}
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