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exports.read = read;
exports.readXmlElement = readXmlElement;
var q = require("q");
var _ = require("underscore");
var ZipFile = require("zipfile").ZipFile;
var xmlreader = require("./xmlreader");
var documents = require("./documents");
function read(docxFile) {
if (_.isString(docxFile)) {
var zipFile = new ZipFile(docxFile);
docxFile = {
read: function(path) {
return q.ninvoke(zipFile, "readFile", path, "utf-8")
.then(function(value) {
return value.toString();
});
}
};
}
return docxFile.read("word/document.xml")
.then(xmlreader.read)
.then(convertXmlToDocument);
}
function convertXmlToDocument(documentXml) {
var body = documentXml.root.first("w:body");
var result = readXmlElements(body.children)
.map(function(children) {
return new documents.Document(children);
});
result.document = result.value;
return result;
}
function readXmlElements(elements) {
var results = elements.map(readXmlElement);
var values = _.pluck(results, "value").filter(notNull);
var messages = _.flatten(_.pluck(results, "messages"), true);
return new Result(values, messages);
}
function readXmlElement(element) {
if (element.type === "element") {
var handler = xmlElementReaders[element.name];
if (handler) {
return handler(element);
} else {
return new Result(
null,
[warning("An unrecognised element was ignored: " + element.name)]
);
}
} else {
return new Result(null);
}
}
var xmlElementReaders = {
"w:p": function(element) {
return readXmlElements(element.children)
.map(function(children) {
var properties = _.find(children, isParagraphProperties);
return new documents.Paragraph(
children.filter(negate(isParagraphProperties)),
properties
);
});
},
"w:pPr": function(element) {
var properties = {
type: "paragraphProperties"
};
var styleElement = element.first("w:pStyle");
if (styleElement) {
properties.styleName = styleElement.attributes["w:val"];
}
return new Result(properties);
},
"w:r": function(element) {
return readXmlElements(element.children)
.map(function(children) {
var properties = _.find(children, isRunProperties);
return new documents.Run(
children.filter(negate(isRunProperties)),
properties
);
});
},
"w:rPr": function(element) {
var properties = {
type: "runProperties"
};
var styleElement = element.first("w:rStyle");
if (styleElement) {
properties.styleName = styleElement.attributes["w:val"];
}
properties.isBold = !!element.first("w:b");
properties.isItalic = !!element.first("w:i");
return new Result(properties);
},
"w:t": function(element) {
return new Result(new documents.Text(element.children[0].value));
}
};
function parseXml(string) {
return xmlreader.read(string);
}
function notNull(value) {
return value !== null;
}
function isParagraphProperties(element) {
return element.type === "paragraphProperties";
}
function isRunProperties(element) {
return element.type === "runProperties";
}
function negate(predicate) {
return function(value) {
return !predicate(value);
};
}
function Result(value, messages) {
this.value = value;
this.messages = messages || [];
}
Result.prototype.map = function(func) {
return new Result(func(this.value), this.messages);
};
Result.prototype.mapThen = function(func) {
var messages = this.messages;
return func(this.value).then(function(resultValue) {
return new Result(resultValue, messages);
});
};
function warning(message) {
return {
type: "warning",
message: message
};
}
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