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// Copyright (c) 2012 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 "chrome/browser/drive/drive_api_util.h"
#include <string>
#include "base/command_line.h"
#include "base/logging.h"
#include "base/strings/string16.h"
#include "base/strings/string_util.h"
#include "base/strings/stringprintf.h"
#include "base/strings/utf_string_conversions.h"
#include "base/values.h"
#include "chrome/browser/drive/drive_switches.h"
#include "chrome/browser/google_apis/drive_api_parser.h"
#include "chrome/browser/google_apis/gdata_wapi_parser.h"
#include "content/public/browser/browser_thread.h"
#include "net/base/escape.h"
#include "third_party/re2/re2/re2.h"
#include "url/gurl.h"
namespace drive {
namespace util {
bool IsDriveV2ApiEnabled() {
const CommandLine* command_line = CommandLine::ForCurrentProcess();
// Enable Drive API v2 by default.
if (!command_line->HasSwitch(switches::kEnableDriveV2Api))
return true;
std::string value =
command_line->GetSwitchValueASCII(switches::kEnableDriveV2Api);
StringToLowerASCII(&value);
// The value must be "" or "true" for true, or "false" for false.
DCHECK(value.empty() || value == "true" || value == "false");
return value != "false";
}
std::string EscapeQueryStringValue(const std::string& str) {
std::string result;
result.reserve(str.size());
for (size_t i = 0; i < str.size(); ++i) {
if (str[i] == '\\' || str[i] == '\'') {
result.push_back('\\');
}
result.push_back(str[i]);
}
return result;
}
std::string TranslateQuery(const std::string& original_query) {
// In order to handle non-ascii white spaces correctly, convert to UTF16.
base::string16 query = UTF8ToUTF16(original_query);
const base::string16 kDelimiter(
kWhitespaceUTF16 + base::string16(1, static_cast<char16>('"')));
std::string result;
for (size_t index = query.find_first_not_of(kWhitespaceUTF16);
index != base::string16::npos;
index = query.find_first_not_of(kWhitespaceUTF16, index)) {
bool is_exclusion = (query[index] == '-');
if (is_exclusion)
++index;
if (index == query.length()) {
// Here, the token is '-' and it should be ignored.
continue;
}
size_t begin_token = index;
base::string16 token;
if (query[begin_token] == '"') {
// Quoted query.
++begin_token;
size_t end_token = query.find('"', begin_token);
if (end_token == base::string16::npos) {
// This is kind of syntax error, since quoted string isn't finished.
// However, the query is built by user manually, so here we treat
// whole remaining string as a token as a fallback, by appending
// a missing double-quote character.
end_token = query.length();
query.push_back('"');
}
token = query.substr(begin_token, end_token - begin_token);
index = end_token + 1; // Consume last '"', too.
} else {
size_t end_token = query.find_first_of(kDelimiter, begin_token);
if (end_token == base::string16::npos) {
end_token = query.length();
}
token = query.substr(begin_token, end_token - begin_token);
index = end_token;
}
if (token.empty()) {
// Just ignore an empty token.
continue;
}
if (!result.empty()) {
// If there are two or more tokens, need to connect with "and".
result.append(" and ");
}
// The meaning of "fullText" should include title, description and content.
base::StringAppendF(
&result,
"%sfullText contains \'%s\'",
is_exclusion ? "not " : "",
EscapeQueryStringValue(UTF16ToUTF8(token)).c_str());
}
return result;
}
std::string ExtractResourceIdFromUrl(const GURL& url) {
return net::UnescapeURLComponent(url.ExtractFileName(),
net::UnescapeRule::URL_SPECIAL_CHARS);
}
std::string CanonicalizeResourceId(const std::string& resource_id) {
// If resource ID is in the old WAPI format starting with a prefix like
// "document:", strip it and return the remaining part.
std::string stripped_resource_id;
if (RE2::FullMatch(resource_id, "^[a-z-]+(?::|%3A)([\\w-]+)$",
&stripped_resource_id))
return stripped_resource_id;
return resource_id;
}
const char kDocsListScope[] = "https://docs.google.com/feeds/";
const char kDriveAppsScope[] = "https://www.googleapis.com/auth/drive.apps";
void ParseShareUrlAndRun(const google_apis::GetShareUrlCallback& callback,
google_apis::GDataErrorCode error,
scoped_ptr<base::Value> value) {
DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
if (!value) {
callback.Run(error, GURL());
return;
}
// Parsing ResourceEntry is cheap enough to do on UI thread.
scoped_ptr<google_apis::ResourceEntry> entry =
google_apis::ResourceEntry::ExtractAndParse(*value);
if (!entry) {
callback.Run(google_apis::GDATA_PARSE_ERROR, GURL());
return;
}
const google_apis::Link* share_link =
entry->GetLinkByType(google_apis::Link::LINK_SHARE);
callback.Run(error, share_link ? share_link->href() : GURL());
}
scoped_ptr<google_apis::FileResource> ConvertResourceEntryToFileResource(
const google_apis::ResourceEntry& entry) {
scoped_ptr<google_apis::FileResource> file(new google_apis::FileResource);
file->set_file_id(entry.resource_id());
file->set_title(entry.title());
file->set_created_date(entry.published_time());
if (std::find(entry.labels().begin(), entry.labels().end(),
"shared-with-me") == entry.labels().end()) {
// Set current time to mark the file is shared_with_me, since ResourceEntry
// doesn't have |shared_with_me_date| equivalent.
file->set_shared_with_me_date(base::Time::Now());
}
file->set_download_url(entry.download_url());
file->set_mime_type(entry.content_mime_type());
file->set_md5_checksum(entry.file_md5());
file->set_file_size(entry.file_size());
file->mutable_labels()->set_trashed(entry.deleted());
file->set_etag(entry.etag());
ScopedVector<google_apis::ParentReference> parents;
for (size_t i = 0; i < entry.links().size(); ++i) {
using google_apis::Link;
const Link& link = *entry.links()[i];
switch (link.type()) {
case Link::LINK_PARENT: {
scoped_ptr<google_apis::ParentReference> parent(
new google_apis::ParentReference);
parent->set_parent_link(link.href());
std::string file_id =
drive::util::ExtractResourceIdFromUrl(link.href());
parent->set_is_root(file_id == kWapiRootDirectoryResourceId);
parents.push_back(parent.release());
break;
}
case Link::LINK_EDIT:
file->set_self_link(link.href());
break;
case Link::LINK_THUMBNAIL:
file->set_thumbnail_link(link.href());
break;
case Link::LINK_ALTERNATE:
file->set_alternate_link(link.href());
break;
case Link::LINK_EMBED:
file->set_embed_link(link.href());
break;
default:
break;
}
}
file->set_parents(parents.Pass());
file->set_modified_date(entry.updated_time());
file->set_last_viewed_by_me_date(entry.last_viewed_time());
return file.Pass();
}
const char kWapiRootDirectoryResourceId[] = "folder:root";
} // namespace util
} // namespace drive
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