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92 lines
3.1 KiB
Plaintext
92 lines
3.1 KiB
Plaintext
// Copyright 2017 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Interface used to parse XML files into a base::Value tree.
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// Ignores comments and white-spaces.
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// Note also that the text content of elements is returned as base::Value of
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// type STRING (UTF-8 encoded): no effort is made by the parser to parse numeric
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// values.
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module data_decoder.mojom;
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import "mojo/public/mojom/base/values.mojom";
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interface XmlParser {
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const string kTypeKey = "type";
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const string kTagKey = "tag";
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const string kTextKey = "text";
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const string kAttributesKey = "attributes";
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const string kChildrenKey = "children";
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const string kNamespacesKey = "namespaces";
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const string kElementType = "element";
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const string kTextNodeType = "text";
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const string kCDataNodeType = "cdata";
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// Parses the input XML and returns a Value with its content. If parsing
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// failed that value is empty and an error is set:
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//
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// For example the following XML:
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//
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// <library xmlns='http://library' xmlns:foo='http://foo.com'>
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// <book foo:id="k123">
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// <author>Isaac Newton</author>
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// <title><![CDATA[Philosophiae Naturalis Principia Mathematica]]</title>
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// <price>40.95</price>
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// </book>
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// <book foo:id="k456">
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// <author>Dr. Seuss</author>
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// <title>Green Eggs and Ham</title>
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// <foo:price>4.95</price>
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// </book>
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// </library>
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//
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// becomes (base::Value dictionary represented as JSON):
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//
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// {"type": "element",
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// "tag": "library",
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// "namespaces": {"": "http://library", "foo": "http://foo.com"},
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// "children": [
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// {"type": "element",
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// "tag": "book",
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// "attributes": {"foo:id": "k123"},
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// "children": [
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// {"type": "element",
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// "tag": "author",
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// "children": [{"type": "text", "text": "Isaac Newton"}]},
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// {"type": "element",
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// "tag": "title",
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// "children": [
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// {"type": "cdata",
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// "text": "Philosophiae Naturalis Principia Mathematica"}]},
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// {"type": "element",
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// "tag": "price",
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// "children": [{"type": "text", "text": "40.95"}]}
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// ]},
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// {"type": "element",
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// "tag": "book",
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// "attributes": {"foo:id": "k456"},
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// "children": [
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// {"type": "element",
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// "tag": "author",
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// "children": [{"type": "text", "text": "Dr. Seuss"}]},
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// {"type": "element",
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// "tag": "title",
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// "children": [{"type": "text", "text": "Green Eggs and Ham"}]},
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// {"type": "element", "tag": "foo:kids"},
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// {"type": "element",
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// "tag": "foo:price",
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// "children": [{"type": "text", "text": "4.95"}],
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// }
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// }
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// ]
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// }
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// ]}
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//
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// Note that the client library provides convenience methods for accessing
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// data from the returned base::Value dictionary structure (see
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// safe_parser_xml.h).
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Parse(string xml) => (mojo_base.mojom.Value? result, string? error);
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};
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