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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/google_apis/drive_api_util.h"
#include <string>
#include "base/command_line.h"
#include "base/logging.h"
#include "base/string16.h"
#include "base/string_util.h"
#include "base/stringprintf.h"
#include "base/utf_string_conversions.h"
#include "chrome/browser/google_apis/drive_switches.h"
namespace google_apis {
namespace util {
bool IsDriveV2ApiEnabled() {
const CommandLine* command_line = CommandLine::ForCurrentProcess();
std::string value =
command_line->GetSwitchValueASCII(switches::kEnableDriveV2Api);
StringToLowerASCII(&value);
if (value == "false") {
return false;
}
// The value should be empty or "true".
DCHECK(value.empty() || value == "true");
return true;
}
} // namespace util
namespace drive {
namespace util {
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;
}
} // namespace util
} // namespace drive
} // namespace google_apis
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