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exports.readContentTypesFromXml = readContentTypesFromXml;
var fallbackContentTypes = {
"png": "png",
"gif": "gif",
"jpeg": "jpeg",
"jpg": "jpeg",
"tif": "tiff",
"tiff": "tiff",
"bmp": "bmp"
};
exports.defaultContentTypes = contentTypes({}, {});
function readContentTypesFromXml(element) {
var extensionDefaults = Object.create(null);
var overrides = Object.create(null);
element.children.forEach(function(child) {
if (child.name === "content-types:Default") {
extensionDefaults[child.attributes.Extension] = child.attributes.ContentType;
}
if (child.name === "content-types:Override") {
var name = child.attributes.PartName;
if (name.charAt(0) === "/") {
name = name.substring(1);
}
overrides[name] = child.attributes.ContentType;
}
});
return contentTypes(overrides, extensionDefaults);
}
function contentTypes(overrides, extensionDefaults) {
return {
findContentType: function(path) {
var overrideContentType = overrides[path];
if (overrideContentType) {
return overrideContentType;
} else {
var pathParts = path.split(".");
var extension = pathParts[pathParts.length - 1];
if (Object.prototype.hasOwnProperty.call(extensionDefaults, extension)) {
return extensionDefaults[extension];
} else {
var fallback = fallbackContentTypes[extension.toLowerCase()];
if (fallback) {
return "image/" + fallback;
} else {
return null;
}
}
}
}
};
}
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