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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/renderer/manifest/manifest_parser.h"
#include "base/json/json_reader.h"
#include "base/strings/nullable_string16.h"
#include "base/strings/string_util.h"
#include "base/strings/utf_string_conversions.h"
#include "base/values.h"
#include "content/public/common/manifest.h"
namespace {
// Parses the 'name' field of the manifest, as defined in:
// http://w3c.github.io/manifest/#dfn-steps-for-processing-the-name-member
// Returns the parsed string if any, a null string if the parsing failed.
base::NullableString16 ParseName(const base::DictionaryValue& dictionary) {
if (!dictionary.HasKey("name"))
return base::NullableString16();
base::string16 name;
if (!dictionary.GetString("name", &name)) {
// TODO(mlamouri): provide a custom message to the developer console.
return base::NullableString16();
}
base::TrimWhitespace(name, base::TRIM_ALL, &name);
return base::NullableString16(name, false);
}
// Parses the 'short_name' field of the manifest, as defined in:
// http://w3c.github.io/manifest/#dfn-steps-for-processing-the-short-name-member
// |short_name| is an out parameter that must not be null.
// Returns the parsed string if any, a null string if the parsing failed.
base::NullableString16 ParseShortName(
const base::DictionaryValue& dictionary) {
if (!dictionary.HasKey("short_name"))
return base::NullableString16();
base::string16 short_name;
if (!dictionary.GetString("short_name", &short_name)) {
// TODO(mlamouri): provide a custom message to the developer console.
return base::NullableString16();
}
base::TrimWhitespace(short_name, base::TRIM_ALL, &short_name);
return base::NullableString16(short_name, false);
}
} // anonymous namespace
namespace content {
Manifest ManifestParser::Parse(const base::StringPiece& json) {
scoped_ptr<base::Value> value(base::JSONReader::Read(json));
if (!value) {
// TODO(mlamouri): get the JSON parsing error and report it to the developer
// console.
return Manifest();
}
if (value->GetType() != base::Value::TYPE_DICTIONARY) {
// TODO(mlamouri): provide a custom message to the developer console.
return Manifest();
}
base::DictionaryValue* dictionary = 0;
value->GetAsDictionary(&dictionary);
if (!dictionary) {
// TODO(mlamouri): provide a custom message to the developer console.
return Manifest();
}
Manifest manifest;
manifest.name = ParseName(*dictionary);
manifest.short_name = ParseShortName(*dictionary);
return manifest;
}
} // namespace content
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