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sqlite-eval.cc
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sqlite-eval.cc
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/* -*- Mode: C++; tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/*
* Copyright 2010 NorthScale, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "config.h"
#include <iostream>
#include <fstream>
#include <stdexcept>
#include "sqlite-eval.hh"
#include "sqlite-pst.hh"
#include "ep.hh"
void SqliteEvaluator::eval(const std::string &filename) {
std::ifstream in(filename.c_str(), std::ios_base::in);
std::string query;
if (!in.good()) {
getLogger()->log(EXTENSION_LOG_INFO, NULL,
"Failed to open eval file\n");
}
while (in.good() && !in.eof()) {
char c;
in.get(c);
query.append(1, c);
switch (sqlite3_complete(query.c_str())) {
case 1:
// READY!
execute(query);
query.clear();
break;
case 0:
// Not ready
break;
default:
// Something's very wrong.
abort();
}
}
execute(query);
}
void SqliteEvaluator::execute(std::string &query) {
trim(query);
if (!query.empty()) {
getLogger()->log(EXTENSION_LOG_DEBUG, NULL,
"Executing query: ``%s''\n", query.c_str());
PreparedStatement st(db, query.c_str());
st.execute();
}
}
void SqliteEvaluator::trim(std::string &str) {
static const std::string whitespaces(" \r\n\t");
while (!str.empty() && whitespaces.find(str[0]) != std::string::npos) {
str = str.substr(1);
}
while (!str.empty() && whitespaces.find(str[str.size()-1]) != std::string::npos) {
str = str.substr(0, str.size()-1);
}
}