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// Copyright (c) 2011 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/history/shortcuts_database.h"
#include <map>
#include <string>
#include <vector>
#include "base/logging.h"
#include "base/string_number_conversions.h"
#include "base/stringprintf.h"
#include "base/time.h"
#include "base/utf_string_conversions.h"
#include "chrome/browser/autocomplete/shortcuts_provider.h"
#include "chrome/common/guid.h"
#include "sql/statement.h"
using base::Time;
namespace {
// Using define instead of const char, so I could use ## in the statements.
#define kShortcutsDBName "omni_box_shortcuts"
// The maximum length allowed for form data.
const size_t kMaxDataLength = 2048; // 2K is a hard limit on URLs URI.
string16 LimitDataSize(const string16& data) {
if (data.size() > kMaxDataLength)
return data.substr(0, kMaxDataLength);
return data;
}
void BindShortcutToStatement(const shortcuts_provider::Shortcut& shortcut,
sql::Statement* s) {
DCHECK(guid::IsValidGUID(shortcut.id));
s->BindString(0, shortcut.id);
s->BindString16(1, LimitDataSize(shortcut.text));
s->BindString16(2, LimitDataSize(UTF8ToUTF16(shortcut.url.spec())));
s->BindString16(3, LimitDataSize(shortcut.contents));
s->BindString16(4, LimitDataSize(shortcut.contents_class_as_str()));
s->BindString16(5, LimitDataSize(shortcut.description));
s->BindString16(6, LimitDataSize(shortcut.description_class_as_str()));
s->BindInt64(7, shortcut.last_access_time.ToInternalValue());
s->BindInt(8, shortcut.number_of_hits);
}
shortcuts_provider::Shortcut ShortcutFromStatement(const sql::Statement& s) {
return shortcuts_provider::Shortcut(s.ColumnString(0),
s.ColumnString16(1),
s.ColumnString16(2),
s.ColumnString16(3),
s.ColumnString16(4),
s.ColumnString16(5),
s.ColumnString16(6),
s.ColumnInt64(7),
s.ColumnInt(8));
}
bool DeleteShortcut(const char* field_name, const std::string& id,
sql::Connection& db) {
sql::Statement s(db.GetUniqueStatement(
base::StringPrintf("DELETE FROM %s WHERE %s = ?", kShortcutsDBName,
field_name).c_str()));
if (!s) {
NOTREACHED() << "Statement prepare failed";
return false;
}
s.BindString(0, id);
if (!s.Run())
return false;
return true;
}
} // namespace
namespace history {
const FilePath::CharType ShortcutsDatabase::kShortcutsDatabaseName[] =
FILE_PATH_LITERAL("Shortcuts");
ShortcutsDatabase::ShortcutsDatabase(const FilePath& folder_path)
: database_path_(folder_path.Append(FilePath(kShortcutsDatabaseName))) {
}
ShortcutsDatabase::~ShortcutsDatabase() {}
bool ShortcutsDatabase::Init() {
// Set the database page size to something a little larger to give us
// better performance (we're typically seek rather than bandwidth limited).
// This only has an effect before any tables have been created, otherwise
// this is a NOP. Must be a power of 2 and a max of 8192.
db_.set_page_size(4096);
// Run the database in exclusive mode. Nobody else should be accessing the
// database while we're running, and this will give somewhat improved perf.
db_.set_exclusive_locking();
// Attach the database to our index file.
if (!db_.Open(database_path_))
return false;
if (!EnsureTable())
return false;
return true;
}
bool ShortcutsDatabase::AddShortcut(
const shortcuts_provider::Shortcut& shortcut) {
sql::Statement s(db_.GetCachedStatement(SQL_FROM_HERE,
"INSERT INTO " kShortcutsDBName
" (id, text, url, contents, contents_class, description,"
" description_class, last_access_time, number_of_hits) "
"VALUES (?,?,?,?,?,?,?,?,?)"));
if (!s) {
NOTREACHED();
return false;
}
BindShortcutToStatement(shortcut, &s);
if (!s.Run()) {
NOTREACHED();
return false;
}
return true;
}
bool ShortcutsDatabase::UpdateShortcut(
const shortcuts_provider::Shortcut& shortcut) {
sql::Statement s(db_.GetCachedStatement(SQL_FROM_HERE,
"UPDATE " kShortcutsDBName " "
"SET id=?, text=?, url=?, contents=?, contents_class=?,"
" description=?, description_class=?, last_access_time=?,"
" number_of_hits=? "
"WHERE id=?"));
if (!s) {
NOTREACHED() << "Statement prepare failed";
return false;
}
BindShortcutToStatement(shortcut, &s);
s.BindString(9, shortcut.id);
bool result = s.Run();
DCHECK_GT(db_.GetLastChangeCount(), 0);
return result;
}
bool ShortcutsDatabase::DeleteShortcutsWithIds(
const std::vector<std::string>& shortcut_ids) {
bool success = true;
db_.BeginTransaction();
for (std::vector<std::string>::const_iterator it = shortcut_ids.begin();
it != shortcut_ids.end(); ++it) {
if (!DeleteShortcut("id", *it, db_))
success = false;
}
db_.CommitTransaction();
return success;
}
bool ShortcutsDatabase::DeleteShortcutsWithUrl(
const std::string& shortcut_url_spec) {
return DeleteShortcut("url", shortcut_url_spec, db_);
}
bool ShortcutsDatabase::DeleteAllShortcuts() {
sql::Statement s(db_.GetCachedStatement(SQL_FROM_HERE,
"DROP TABLE " kShortcutsDBName));
if (!s) {
NOTREACHED() << "Statement prepare failed";
return false;
}
if (!s.Run())
return false;
EnsureTable();
db_.Execute("VACUUM");
return true;
}
// Loads all of the shortcuts.
bool ShortcutsDatabase::LoadShortcuts(
std::map<std::string, shortcuts_provider::Shortcut>* shortcuts) {
DCHECK(shortcuts);
sql::Statement s(db_.GetCachedStatement(SQL_FROM_HERE,
"SELECT id, text, url, contents, contents_class, "
"description, description_class, last_access_time, number_of_hits "
"FROM " kShortcutsDBName));
if (!s) {
NOTREACHED() << "Statement prepare failed";
return false;
}
shortcuts->clear();
while (s.Step()) {
shortcuts->insert(std::make_pair(s.ColumnString(0),
ShortcutFromStatement(s)));
}
return true;
}
bool ShortcutsDatabase::EnsureTable() {
if (!db_.DoesTableExist(kShortcutsDBName)) {
if (!db_.Execute(base::StringPrintf(
"CREATE TABLE %s ( "
"id VARCHAR PRIMARY KEY, "
"text VARCHAR, "
"url VARCHAR, "
"contents VARCHAR, "
"contents_class VARCHAR, "
"description VARCHAR, "
"description_class VARCHAR, "
"last_access_time INTEGER, "
"number_of_hits INTEGER)", kShortcutsDBName).c_str())) {
NOTREACHED();
return false;
}
}
return true;
}
} // namespace history
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