[fnd] Add ResourceFileReader. This reads simple <key>=<value> files.

This commit is contained in:
jakcron 2018-04-15 10:38:58 +08:00
parent 88bcc8ce6d
commit bfb9d87c95
2 changed files with 86 additions and 0 deletions

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#pragma once
#include <string>
#include <map>
namespace fnd
{
class ResourceFileReader
{
public:
ResourceFileReader();
void processFile(const std::string& path);
bool doesExist(const std::string& key) const;
const std::string& operator[](const std::string& key);
private:
const std::string kModuleName = "ResourceFileReader";
std::map<std::string,std::string> mResources;
};
}

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#include <fnd/types.h>
#include <fnd/ResourceFileReader.h>
#include <fstream>
#include <algorithm>
#include <iostream>
fnd::ResourceFileReader::ResourceFileReader()
{
}
inline bool isNotPrintable(char chr) { return isprint(chr) == false; }
void fnd::ResourceFileReader::processFile(const std::string& path)
{
std::ifstream file;
file.open(path, std::ios::in);
if (file.is_open() == false)
{
throw fnd::Exception(kModuleName, "Failed to open file");
}
std::string line, key, value;
while (std::getline(file, line))
{
// read up to comment line
if (line.find(";") != std::string::npos)
line = line.substr(0, line.find(";"));
// change chars to lower string
std::transform(line.begin(), line.end(), line.begin(), ::tolower);
// strip whitespace
line.erase(std::remove(line.begin(), line.end(), ' '), line.end());
// strip nonprintable
line.erase(std::remove_if(line.begin(), line.end(), isNotPrintable), line.end());
// skip lines that don't have '='
if (line.find("=") == std::string::npos)
continue;
key = line.substr(0,line.find("="));
value = line.substr(line.find("=")+1);
// skip if key or value is empty
if (key.empty() || value.empty())
continue;
//std::cout << "[" + key + "]=(" + value + ")" << std::endl;
mResources[key] = value;
}
file.close();
}
bool fnd::ResourceFileReader::doesExist(const std::string& key) const
{
return (mResources.find(key) != mResources.end());
}
const std::string& fnd::ResourceFileReader::operator[](const std::string& key)
{
return mResources[key];
}