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config.cpp
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#include <fstream>
#include <stdlib.h>
#include <iostream>
#include "config.h"
namespace config
{
bool Config::isSpace(char ch)
{
if(ch == ' ' || ch == '\t') {
return true;
} else {
return false;
}
}
bool Config::isCommentChar(char ch)
{
switch(ch) {
case '#':
return true;
default:
return false;
}
}
void Config::trim(std::string &str)
{
int strSize;
int index;
bool isEmptyStr;
int startPos;
int endPos;
if(str.empty()) {
return ;
}
isEmptyStr = true; // 是否全为{空格、tab}
strSize = str.size();
startPos = 0;
endPos = strSize - 1;
for(int i = 0; i < strSize; i ++) { // 删除首{空格、tab}
if(!isSpace(str[i])) {
isEmptyStr = false;
startPos = i;
break;
}
}
if(isEmptyStr) {
str = "";
return ;
}
for(int i = strSize - 1; i >= 0; i --) { // 删除尾{空格、tab}
if(!isSpace(str[i])) {
endPos = i;
break;
}
}
str = str.substr(startPos, endPos - startPos + 1);
}
// bool Config::analyseLine(const std::string &line, std::string §ion, std::string &key, std::string &value)
// {
// std::string newLine;
// int tmpPos;
// int stratPos;
// int endPos;
// int bracketsStartPos; // '['
// int bracketsEndPos; // ']'
// if(line.empty()) {
// return false;
// }
// stratPos = 0;
// endPos = line.size() - 1;
// tmpPos = line.find('#');
// if(tmpPos != -1) {
// if(!tmpPos) {
// return false;
// } else {
// endPos = tmpPos - 1;
// }
// }
// bracketsStartPos = line.find('[');
// bracketsEndPos = line.find(']');
// if(bracketsStartPos != -1 && bracketsEndPos != -1) {
// section = line.substr(bracketsStartPos + 1, bracketsEndPos - 1);
// return true;
// }
// newLine = line.substr(stratPos, stratPos - endPos + 1);
// tmpPos = newLine.find('=');
// if(tmpPos == -1) {
// return false;
// }
// key = newLine.substr(0, tmpPos);
// value = newLine.substr(tmpPos + 1, endPos - (tmpPos + 1) + 1); // [endPos, tmpPos + 1]
// trim(key);
// if(key.empty()) {
// return false;
// }
// trim(value);
// tmpPos = value.find('\r');
// if(tmpPos > 0) {
// value.replace(tmpPos, 1, "");
// }
// tmpPos = value.find('\n');
// if(tmpPos > 0) {
// value.replace(tmpPos, 1, "");
// }
// return true;
// }
bool Config::analyseLine(const std::string &line, std::string &key, std::string &value)
{
std::string newLine;
int tmpPos;
int stratPos;
int endPos;
if(line.empty()) {
return false;
}
stratPos = 0;
endPos = line.size() - 1;
tmpPos = line.find('#');
if(tmpPos != -1) {
if(!tmpPos) {
return false;
} else {
endPos = tmpPos - 1;
}
}
newLine = line.substr(stratPos, stratPos - endPos + 1);
tmpPos = newLine.find('=');
if(tmpPos == -1) {
return false;
}
key = newLine.substr(0, tmpPos);
value = newLine.substr(tmpPos + 1, endPos - (tmpPos + 1) + 1); // [endPos, tmpPos + 1]
trim(key);
if(key.empty()) {
return false;
}
trim(value);
tmpPos = value.find('\r');
if(tmpPos > 0) {
value.replace(tmpPos, 1, "");
}
tmpPos = value.find('\n');
if(tmpPos > 0) {
value.replace(tmpPos, 1, "");
}
return true;
}
bool Config::parseValue(const std::string key, std::string &value)
{
int strSize;
std::string newValue;
std::string newKey;
std::map<std::string, std::string>::iterator it;
if(value[0] == '$') {
strSize = value.size();
for(int i = 2; i < strSize; i ++) {
if(value[i] == ')') {
// std::cout << newKey << " qqq " << settings[newKey] << std::endl;
it = settings.find(newKey);
if(it == settings.end()) {
// std::cout << key << " " << value << std::endl;
return false;
} else {
newValue = settings[newKey];
// std::cout << "new valuee" << " " << newValue << std::endl;
for(int j = i + 1; j < strSize; j ++) {
newValue += value[j];
}
value = newValue;
return true;
}
} else {
newKey += value[i];
}
}
return false;
}
return true;
}
bool Config::ReadConfig(const std::string &filename)
{
std::string line;
std::string key;
std::string value;
std::map<std::string, std::string>::iterator it;
settings.clear();
std::ifstream inFile(filename.c_str());
if(!inFile) {
return false;
}
while(getline(inFile, line)) {
if(analyseLine(line, key, value)) {
if(!parseValue(key, value)) {
return false;
}
settings[key] = value;
// std::cout << key << " " << value << std::endl;
}
key.clear();
value.clear();
}
inFile.close();
return true;
}
std::string Config::ReadString(const std::string item, const char *defaultValue)
{
std::string def(defaultValue);
std::map<std::string, std::string>::iterator it;
it = settings.find(item);
if(it == settings.end()) {
return def;
}
return it -> second;
}
int Config::ReadInt(const std::string item, const int &defaultValue)
{
std::map<std::string, std::string>::iterator it;
it = settings.find(item);
if(it == settings.end()) {
return defaultValue;
}
return atoi(it -> second.c_str());
}
float Config::ReadFloat(const std::string item, const float &defaultValue)
{
std::map<std::string, std::string>::iterator it;
it = settings.find(item);
if(it == settings.end()) {
return defaultValue;
}
return atoi(it -> second.c_str());
}
}